JP2002114342A - Connection method of conveying belt in curved belt conveyor, and conveying belt for curved belt conveyor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connecting method of conveying belts for a curved belt conveyor capable of effectively preventing a conveying belt body from being damaged. SOLUTION: One of inclined joint end parts 92 is formed along an inclination direction (b) inclined at a specific acute angle θ1 to the radial direction (a), on a holding part by holding rollers 82, 84 at one circumferential end part of a circular arc-shaped conveying belt body 91. The other inclined joint end part 97 is formed corresponding to the inclined joint end part 92 on the holding part by the holding rollers 82, 84 at the other circumferential end part of the conveying belt body 91. One circumferential end part including the inclined joint end part 92 of the conveying belt body 91 and the other circumferential end part including the other inclined joint end part 97 are butted and joined to each other.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of connecting a conveyor belt for a curved belt conveyor and a conveyor belt for a curved belt conveyor, which are urged radially outward by a clamping roller for clamping the outer periphery. .

[0002]

2. Description of the Related Art Conventionally, as a method for connecting a conveyor belt of this type for a curved belt conveyor, for example, as shown in FIGS. Is formed along the radial direction and the other wavy joint end
1b is formed along the radial direction, and one of these wavy joint ends
1a and the other wavy joining end 1b are joined to each other by abutting each other. Thereafter, the reinforcing sheet 2 is attached to the back surface of the outer peripheral portion of the conveyor belt body 1 in a bulging manner, and both inclined joining ends 1a, 1b are provided.
A method is adopted in which it is positioned in a state of straddling.

[0003]

However, in the above-mentioned conventional method, since the force for opening the joining portion of the conveyor belt body 1 based on the urging force of the sandwiching roller is relatively large, the conveyor belt body 1 is damaged. It may be easy.

In the above-mentioned conventional method, the reinforcing sheet 2 is attached to the outer periphery of the conveyor belt 1 in a bulging manner, so that the thickness of the conveyor belt 1 is not constant, and May become unstable.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and an object of the present invention is to provide a method of connecting a conveyor belt for a curved belt conveyor and a conveyor belt for a curved belt conveyor, which can appropriately prevent damage to the conveyor belt main body. And

[0006]

According to a first aspect of the present invention, there is provided a method of connecting a conveyor belt for a curved belt conveyor, wherein the outer peripheral side is urged radially outward by a clamping roller for clamping the outer peripheral side. Connection method for a conveyor belt for use, wherein one of the inclined joining ends is formed at a predetermined angle at an acute angle with respect to the radial direction at a portion sandwiched by the clamping rollers at one end in the circumferential direction of the arc-shaped conveyance belt body. Formed at a length that traverses the nipping roller along the inclined direction that is inclined with the other inclined joining end at a portion nipped by the nipping roller at the other end in the circumferential direction of the transport belt main body. Shaped in a state corresponding to one of the inclined joining ends, a circumferential end including the one inclined joining end and a circumferential other end including the other inclined joining end abut against each other. hand It is intended to focus.

[0007] By dispersing the stress acting on the inclined joining end portion of the conveyor belt body, the force for opening the joint portion of the conveyor belt body based on the urging force of the nipping roller can be reduced as compared with the conventional art. The belt body can be appropriately prevented from being damaged.

According to a second aspect of the present invention, there is provided a method of connecting a conveyor belt for a curved belt conveyor which is urged radially outward by a clamping roller for clamping the outer periphery. In a portion sandwiched by the sandwiching roller at one end in the circumferential direction of the arc-shaped conveyance belt body, one inclined joining end portion is inclined in a direction inclined at a predetermined acute angle with respect to the radial direction. Formed along, and, in addition to the portion sandwiched by the sandwiching rollers, one of the wavy joining ends is formed such that the oblique side of the wave of the one wavy joining end has an angle larger than the predetermined angle with respect to the radial direction. It is formed so as to correspond to the inclined direction of inclination, and the other inclined joining end is attached to the portion of the other end in the circumferential direction of the conveyor belt body, which is sandwiched by the sandwiching roller, to the one inclined side. Formed in a state that corresponds to the joint end,
In addition to the portion sandwiched by the sandwiching rollers, the other wavy joining end is formed in a state corresponding to the one wavy joining end, and the one inclined joining end and the one wavy joining are formed. And joining the other end to the other inclined joining end and the other wavy joining end.

[0009] By dispersing the stress acting on the inclined joining end portion of the conveyor belt body, the force for opening the joint portion of the conveyor belt body based on the urging force of the nipping roller can be reduced as compared with the conventional art. The belt body can be appropriately prevented from being damaged.

According to a third aspect of the present invention, there is provided a method of connecting a curved belt conveyor conveyor belt according to the first or second aspect, wherein the predetermined angle of one of the wavy joining ends is about 30 degrees. Is set to

When the transport belt body is used, for example, wound around a pair of end rollers, it is possible to prevent the transport belt body from being damaged while avoiding an excessive load applied to the transport belt body from the end rollers. It can be reliably prevented.

According to a fourth aspect of the present invention, there is provided a method of connecting a conveyor belt for a curved belt conveyor according to any one of the first to third aspects. Attached to this conveyor belt body without increasing the thickness dimension,
The transport belt main body is positioned so as to straddle between the one inclined joint end and the other inclined joint end.

[0013] Since the thickness of the transport belt main body does not increase due to the presence of the reinforcing sheet body, the transport belt main body can realize stable traveling.

According to a fifth aspect of the present invention, there is provided a conveyor belt for a curved belt conveyor which is urged radially outward by a sandwiching roller for sandwiching the outer peripheral side. The length of the transport belt main body, and the length of the transport belt main body at one end in the circumferential direction, which crosses the gripping roller along an inclined direction inclined at a predetermined acute angle with respect to the radial direction at a portion sandwiched by the gripping roller. One of the inclined joining ends formed in the above manner, and a portion sandwiched by the sandwiching roller at the other end in the circumferential direction of the conveyor belt main body is formed in a state corresponding to the one inclined joining end. The other one of the inclined joint ends is provided, and one circumferential end including the one inclined joint end and the other circumferential end including the other inclined joint end abut against each other. Are those joined Te.

[0015] By dispersing the stress acting on the inclined joining end portion of the conveying belt body, the force for opening the joining portion of the conveying belt body based on the urging force of the nipping roller can be reduced as compared with the related art. The belt body can be appropriately prevented from being damaged.

According to a sixth aspect of the present invention, there is provided a conveyor belt for a curved belt conveyor which is urged radially outward by a sandwiching roller for sandwiching the outer periphery. And a slant formed at a portion of the one end in the circumferential direction of the transfer belt body, which is held by the holding roller, along an inclined direction inclined at a predetermined acute angle with respect to the radial direction. In addition to the shape-joining end portion and the portion sandwiched by the sandwiching roller at the circumferential end of the conveyor belt main body, the oblique side of the wave coincides with the inclined direction inclined at an angle larger than the predetermined angle with respect to the radial direction. One of the wavy joining ends formed so as to form the one inclined shape at a portion sandwiched by the sandwiching roller at the other end in the circumferential direction of the conveyor belt main body. In addition to the other inclined joining end formed in a state corresponding to the joining end, and a portion sandwiched by the sandwiching roller at the other end in the circumferential direction of the conveyor belt body, the one wavy joining end And the other wavy joint end formed in a state corresponding to the above, the one inclined joint end and the one wavy joint end, and the other inclined joint end and the other wavy joint The ends are butted and joined to each other.

[0017] By dispersing the stress acting on the inclined joining end of the conveying belt main body, the force for opening the joint portion of the conveying belt main body based on the urging force of the nipping roller can be reduced as compared with the related art. The belt body can be appropriately prevented from being damaged.

According to a seventh aspect of the present invention, the predetermined angle of one of the corrugated joining ends is set to about 30 degrees. Things.

When the transport belt main body is used, for example, by being wound around a pair of end rollers, it is possible to prevent the transport belt main body from being damaged while preventing an excessive load from being applied to the transport belt main body from the end rollers. It can be reliably prevented.

According to a eighth aspect of the present invention, there is provided the conveyor belt for a curved belt conveyor according to any one of the fifth to seventh aspects, without increasing the thickness of the main body of the conveyor belt. A reinforcing sheet body attached to the main body and positioned so as to straddle between one inclined joint end and the other inclined joint end of the conveyor belt body.

Since the thickness of the transport belt main body does not increase due to the presence of the reinforcing sheet, the transport belt main body can be stably run.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The construction of an embodiment of a conveyor belt for a curved belt conveyor according to the present invention will be described below with reference to the drawings.

FIGS. 1 to 3 show the entirety of a curved belt conveyor using the conveyor belt for a curved belt conveyor according to the present invention. In FIGS. 1 to 3, reference numeral 3 denotes a conveyor frame. Multiple leg members 3a
The leg members 3a are connected to each other by horizontal connecting members 3b.

The frame 3 has an outer frame portion 4 having a substantially arc shape in plan view on the outer circumference and an inner frame portion 5 on the inner circumference, and the outer frame portion 4 and the inner frame portion 5 are mutually connected. A pair of equal-diameter end rollers 6a and 6b are attached between both ends so as to be positioned in a substantially C-shape at an angle of approximately 90 ° in plan view. I have. Each end roller
6a and 6b have a plurality of small roller members 7 having the same diameter and a cylindrical shape. Each of the small roller members 7 is supported by a support shaft 8 which is horizontally installed between the outer frame portion 4 and the inner frame portion 5. Axis 8
Are attached so as to be independently rotatable adjacent to each other along the axial direction.

The outer frame portion 4 and the inner frame portion 5 except for both ends are connected by a substantially fan-shaped sliding contact plate member 11, and the sliding contact plate member 11 has a shaft. A plurality of directions, for example, 3
The book carrier rollers 12 are mounted so as to be located radially.

Between the outer frame portion 4 and the inner frame portion 5, a curved belt 15 as an arc-shaped and endless curved belt conveyor conveyor belt is disposed so as to be able to run in forward and reverse directions. A driving means 16 for moving the curve belt 15 in the forward direction or the reverse direction is provided at a central position of the outer peripheral portion of the outer peripheral portion. There is provided an urging means 17 which detects the traveling direction A of the vehicle 15 and urges the curve belt 15 toward the outer periphery along the radial direction in accordance with the detected traveling direction A. This urging means 17
Are located near the center between the center of the outer peripheral portion of the curved belt 15 and the peripheral edge on the outer peripheral side so as to radially bias the curved belt 15 toward the outer peripheral side.

The curved belt 15 conveys the object W placed on the upper surface in an arc shape. The curved belt 15 is wound between the end rollers 6a and 6b with a predetermined tension.
An arc-shaped endless shape is supported by the carrier 11 and the carrier roller 12.

The outgoing road surface 15a of the curved belt 15 is
When the traveling direction A of the curved belt 15 is a positive direction in a state where the traveling direction A of the curved belt 15 is held in a horizontal plane by the sliding contact plate member 11 and the carrier roller 12, as shown in FIG.
In the middle, traveling from left to right, and when traveling direction A is the opposite direction, a predetermined direction as shown in FIG.
For example, the vehicle travels from the right side to the left side in FIG. on the other hand,
As shown in FIG. 4, the return road surface 15b of the curved belt 15 is in a state where the center side excluding both ends in the circumferential direction is gradually inclined downward from the inner frame portion 5 side to the outer frame portion 4 side. The vehicle travels in the direction opposite to the outward road surface 15a.

The arc center O of the curve belt 15 is located on an extension of both edges of the curve belt 15 in plan view in the running direction A as shown in FIGS. Reference lines L1, L2, L3 extend radially toward the outer peripheral side along the radial direction of the belt 15.

The driving means 16 has a motor 21 as a power source. The motor 21 is horizontally supported by a support member 22 attached to the outer frame portion 4, and extends outward from the outer frame portion 4. Curved belt 15 without protruding to
It is arranged at a position below. A drive roller 27 is attached to the motor 21 via a power transmission mechanism 26 including a driving pulley 23, a driven pulley 24, a timing belt 25, and the like. Although not shown, the motor 21 is supported by the support member 22 in a state of protruding outward from the outer frame portion 4.
And the drive roller 27 may be directly attached to the motor 21 without the power transmission mechanism 26 interposed therebetween.

As shown in FIG. 4, the drive roller 27 is driven by the curved belt 15 with the axial direction coinciding with the horizontal direction.
And a reference line L1 extending horizontally from the arc center O of the curved belt 15 toward the center of the outer periphery of the curved belt 15 in a plan view. The motor 21 is rotatable about the rotation center axis that has been set.
Is driven to rotate in the forward and reverse directions by receiving the driving force from.

Above the drive roller 27, a forward path side pinch roller 31 is disposed so as to be driven and rotatable in a state of being positioned on the front side of the forward path surface 15a of the curve belt 15.

As shown in FIGS. 3 and 4, the forward path side pinch roller 31 is mounted via a bearing (not shown) on the tip of a support shaft 32 whose axial direction coincides with the horizontal direction. The base end of the shaft 32 is the forward-side rotating arm 33
The forward rotation arm 33 is supported by the support member 22 so as to be rotatable around a central support shaft 33a in the longitudinal direction.

The base end of the outward rotation arm 33 is urged upward by a spring 35 which is an urging member held by a spring holding portion 34. As a result, the outward rotation arm 33 is rotated. Arm 33
Is urged in the direction in which the leading end side descends, the drive roller 27 contacts the back surface of the forward path surface 15a of the curve belt 15, and the forward path pinch roller 31 contacts the surface of the forward path surface 15a of the curve belt 15, and the forward path Curve belt 15 with side pinch roller 31
Is pressed against the drive roller 27, and the drive roller 27 and the forward-side pinch roller 31 form a curved belt.
15 outgoing road surfaces 15a are always held with a predetermined pressing force.

On the other hand, below the drive roller 27, a return path pinch roller 41 is disposed so as to be driven and rotatable in a state of being positioned on the front surface side of the return path surface 15b of the curve belt 15.

The return-side pinch roller 41 is mounted via a bearing (not shown) on the distal end of a support shaft 42 whose axial direction coincides with the horizontal direction, and the base end of the support shaft 42 rotates in the return-way direction. The return-path-side rotating arm 43 is connected to the distal end of the arm 43 by a support member 22.
It is supported rotatably around a.

The base end of the return-path-side rotating arm 43 is
It is urged downward by a spring 45 which is an urging body held by a spring holding portion 44, and as a result,
43 is urged in the direction in which the tip side rises,
Contacts the back surface of the return surface 15b of the curve belt 15 and the return-side pinch roller 41 contacts the surface of the return surface 15b of the curve belt 15, and the return-side pinch roller 41
The return surface 15b of the curve belt 15 is always held by the drive roller 27 and the return-side pinch roller 41 with a predetermined pressing force.

The urging means 17 includes, for example, two forward-side urging means 51a, 51b capable of changing directions in accordance with the traveling direction A of the curve belt 15, and two backward-path urging means 52a, 52b. Have.

The two outward biasing means 51a and 51b are disposed at two locations separated by the same distance from the center of the outer peripheral portion of the outward surface 15a of the curve belt 15 in a direction away from each other.
Each of the outward biasing means 51a and 51b is supported by an elongated plate-like support 56 bridged by an opening 55 of the support plate member 54 of the outer frame portion 4, and is provided on the outward surface 15a of the curve belt 15. It is located in the vicinity of the center between the center of the outer peripheral portion and the peripheral edge on the outer peripheral side.

Further, the two return path pulling means 52a, 52b
Are provided at two locations separated by the same distance from the center of the outer peripheral portion of the return road surface 15b of the curve belt 15 in the direction away from each other. Each of the return path side pulling means 52a, 52b is a pair of protruding plate members of the outer frame portion 4 which are opposed to each other.
It is supported by an elongated plate-like support body 56 bridged between 58 and 58, and is located near the center between the center of the outer peripheral portion of the return path surface 15b of the curved belt 15 and the peripheral edge on the outer peripheral side. ing.

The separation distance between the two return path urging means 52a, 52b is set longer than the separation distance between the two forward path urging means 51a, 51b. Although not shown,
By reversing the positional relationship between the forward biasing means 51a, 51b and the backward biasing means 52a, 52b, two backward biasing means 52a, 52b are provided.
The separation distance of b may be set to be shorter than the separation distance of the two forward-side urging means 51a and 51b. The positions of the forward biasing means 51a and 51b and the backward biasing means 52a and 52b are dispersed at a predetermined distance so that the movement of the curve belt 15 to the arc center O side is appropriately prevented. Set to position.

Here, each of the outward biasing means 51a, 51b and the backward biasing means 52a, 52b has substantially the same structure, and as shown in FIGS. 5 to 7, the axial direction is vertical. The support shaft 61 has the same support shaft 61. The support shaft 61 is inserted through the center of the support body 56 in the longitudinal direction, and a nut 62 serving as a retaining member is attached to the lower end by screwing. A lower oscillating base 63, which is a substantially rectangular solid oscillating body, is provided between the nut 62 and the support body 56 so as to be able to oscillate about the support shaft 61, and on one side surface of the lower oscillating base 63. An elongated notch 64 is formed in the vertical direction.

On the other hand, a nut 67 as a retaining member is attached to the upper end of the support shaft 61 by screwing.
An upper swing base 68, which is a substantially rectangular solid swing body, is provided between the support 56 and the swing body about the support shaft 61. On one side surface of the upper swing base 68, a notch 69 having a narrow shape is formed in a vertical direction. A spring accommodating portion 70 is formed in a concave shape on the upper surface of the upper swing base 68, and a lower end of a cylindrical compression spring 71 is accommodated in the spring accommodating portion 70. An upper end of the compression spring 71 is a nut 67. Is in contact with the lower surface of.

Then, the upper swinging base is moved by the compression spring 71.
The lower swing base 63 and the lower swing base 63 are urged toward each other. Further, the upper swing base 68 and the lower swing base 63 are connected by connecting pins 72, 72, and are configured to swing in conjunction with each other.

The support 56 is provided with a swing-regulating engagement shaft 75 whose axial direction coincides with the vertical direction.
The upper portion of 75 is located within the notch 69 of the upper swing base 68, and the lower portion is located within the notch 64 of the lower swing base 63. , 69, the swing of the upper swing base 68 and the lower swing base 63 is regulated.

From the other side of the upper swinging base 68,
A support shaft 81 that swings together with the upper swing base 68 protrudes toward the curve belt 15 side, and one clamping roller 82 is rotatably mounted on the front end side of the support shaft 81 around the support shaft 81. ing. Also, from the other side of the lower swinging base 63,
A support shaft 83 that swings together with the lower swing base 63 is provided so as to project toward the curve belt 15, and the other holding roller 84 is provided at the tip end of the support shaft 83 via the curve belt 15. It is attached so as to be rotatable about a support shaft 83 in a state facing the roller 82.

The pair of pinching rollers 82,
84 is urged in a direction approaching each other based on the urging force of the compression spring 71 via the upper swinging base 68 and the lower swinging base 63, and constantly moves the forward path surface 15a and the backward path surface 15b of the curved belt 15 to a predetermined position. It is held in line contact with pressing force.

The pair of nip rollers 82 and 84 are moved downstream in the running direction A of the curved belt 15 by the force received from the running curved belt 15 in accordance with the running direction A of the curved belt 15. The upper side rocking base 68 and the lower side rocking base 68 are rocked and positioned by a predetermined amount, and the curved belt 15 is turned toward the outer periphery along the radial direction by rotating while being positioned. Energize.

That is, each of the nipping rollers 82 and 84 is flat with respect to reference lines L 2 and L 3 extending from the arc center O of the curve belt 15 toward the outer periphery of the curve belt 15 based on the running of the curve belt 15. In accordance with the traveling direction A of the curved belt 15, the driven belt rotates around a rotation center axis X inclined at a predetermined angle α in a predetermined direction, that is, in a downstream direction of the curved belt 15, in a visual direction.
From the center O of the arc toward the outer periphery.

The predetermined angle α is an angle set by the regulation of the swing of the upper swing base 68 and the lower swing base 63 by the engagement shaft 75, and is, for example, about 7 degrees. In addition,
Each of the sandwiching rollers 82 and 84 is formed to have the same diameter in the axial direction. However, for example, the holding rollers 82 and 84 may be formed to have a truncated cone shape whose diameter is reduced toward the outer peripheral side of the curved belt 15.

Next, a curved belt urged radially outward by these sandwiching rollers 82 and 84.
15 will be described in detail with reference to the drawings.

As shown in FIG. 8 to FIG. 11, the curved belt 15 has an endless endless arc-shaped conveyer belt main body 91 having one end in the circumferential direction and the other end in the circumferential direction joined together. Have.

The transport belt main body 91 has an arc shape close to a semicircle in a developed plane state before joining, and a portion sandwiched by sandwiching rollers 82 and 84 which are outer peripheral portions at one end in the circumferential direction includes: One straight joining end portion 92 is formed so as to cross the sandwiching rollers 82 and 84 along an inclination direction B inclined at a predetermined angle θ1 which is an acute angle with respect to the radial direction A of the conveyor belt main body 91. I have. The predetermined angle θ1 is, for example, an angle smaller than 45 degrees or an angle of 15 to 45 degrees, and is preferably, for example, about 30 degrees. The length of one of the inclined joining ends 92 is set to a length that crosses the nipping rollers 82 and 84, and is, for example, longer than the axial length of the nipping rollers 82 and 84.

In addition to the portion sandwiched by the sandwiching rollers 82 and 84 at one end in the circumferential direction of the conveyor belt main body 91,
One zigzag wavy joint end portion 93 located substantially over the entirety is formed along the radial direction a, and the oblique side 94 of the wave of the one wavy joint end portion 93 has a predetermined angle with respect to the radial direction a. The inclination direction coincides with an inclination direction C inclined at an angle θ2 larger than θ1, for example, an angle of 70 to 80 degrees (for example, about 75 degrees). The one inclined joining end 92 and the one wavy joining end 93 are continuously located, and form one end in the circumferential direction of the transport belt main body 91. The inner end of one of the inclined joining ends 92 is connected to the outer end of one of the wavy joining ends 93, and the outer end of the one inclined joining end 92 is located at the outer edge of the conveyor belt body 91. Has been extended.

On the other hand, at the other end of the conveyor belt main body 91 in the circumferential direction, at the portion sandwiched by the sandwiching rollers 82 and 84, the other straight joining end 97 having one straight line is provided. It is formed in a state corresponding to the shape-like joining end 92. The other zigzag wavy joining end 98 located substantially over the entire other than the portion sandwiched by the sandwiching rollers 82 and 84 at the other end in the circumferential direction of the conveyor belt main body 91 is provided with one wavy joining end. It is formed in a state corresponding to the portion 93. The other inclined joining end 97 and the other wavy joining end 98 are located continuously and form the other end in the circumferential direction of the conveying belt main body 91.

Then, one inclined joining end 92 and one wavy joining end 93 of the conveyor belt main body 91 and the other inclined joining end 97 and the other wavy joining end 98 of the conveyor belt main body 91 are connected to each other. Are abutted and joined to each other, so that the conveying belt main body 91 has an endless shape.

On the other hand, the curved belt 15 includes a reinforcing sheet body 100 embedded in the conveying belt main body 91 without increasing the thickness of the conveying belt main body 91. One inclined joining end of the conveyor belt body 91 so as to reinforce the joining portion of 91
It is located over the entire area between 92 and the other inclined joining end 97.

The reinforcing sheet body 100 is formed, for example, only of a reinforcing sheet 100a which is a single parallelogram-shaped reinforcing canvas. Opposite sides of the reinforcing sheet 100a having a longer length are substantially equal in length to the inclined joining ends 92 and 97, respectively, and are located parallel to the inclined joining ends 92 and 97, respectively. Reinforcement sheet 100a
The shorter side of the conveyor belt body 91
Are located along a direction (circumferential direction) orthogonal to the radial direction a. The reinforcing sheet body 100 has a main purpose of reinforcing the transport belt main body 91 in the traveling direction A.

Here, a method of connecting the curve belt 15, that is, an electroless endless method of the curve belt 15 will be described with reference to the drawings.

One inclined joining end 92 and one wavy joining end are provided at one end in the circumferential direction of the arc-shaped conveying belt main body 91.
93 is formed, and the other inclined joining end 97 and the other wavy joining end 98 are formed at the other end in the circumferential direction. As apparent from FIGS. 10 and 11, etc., the conveying belt main body 91 before the bonding had a urethane layer 91a as a thermoplastic resin layer on the front side and a canvas layer 91b as a base layer on the back side. It is composed of a two-layered flexible sheet member.

Thereafter, as shown in FIG. 14 (a), one inclined joining end 92 and one wavy joining end 93, the other inclined joining end 97 and the other wavy joining end 98, Are abutted against each other, and a replenishing urethane sheet 10 as a refilling sheet is placed on the abutted portion.
Put 5 on it.

Next, the replenishing urethane sheet 105 is melted by applying heat to the replenishing urethane sheet 105. As shown in FIG. 14B, the melted urethane enters between one of the joining ends 92 and 93 and the other joining ends 97 and 98, and the entered urethane solidifies to form one joining end. 92, 93 and the other joining ends 97, 98 are joined.

Thereafter, as shown in FIG. 14 (c), the urethane layer 91a on the front side of the bonded conveyor belt main body 91 is formed.
Is formed on the upper surface of the conveyor belt main body 91 to form a housing recess 106. Then, the reinforcing sheet body 100 formed of only the reinforcing sheet 100a is positioned on the upper surface of the canvas layer 91b in the accommodation recess 106 of the conveyor belt main body 91, and then the reinforcing sheet body 100 is refilled so as to cover the reinforcing sheet body 100. A replenishing urethane sheet 107 as a sheet is placed on the conveyor belt main body 91.

After the replenishment urethane sheet 107 is placed, the replenishment urethane sheet 107 is melted by applying heat to the replenishment urethane sheet 107. The melted urethane
As shown in FIG.
The urethane that has entered is solidified, and the reinforcing sheet body 100 and the canvas layer 91b of the conveyor belt main body 91 are joined. The transport belt main body 91 thus formed into an endless shape has substantially the same thickness over the entirety.

Next, the operation of the above embodiment will be described.

When the object W is conveyed so as to draw an arc-shaped movement trajectory in the counterclockwise direction in FIG. 1, a drive switch (not shown) is operated to operate the motor 21 of the driving means 16. The curve belt 15 is caused to travel in the forward traveling direction A.

Then, the nipping rollers 82 of the forward-side urging means 51a and 51b and the backward-side urging means 52a and 52b
84 receives the driving force from the curve belt 15 and automatically swings around the support shaft 61 toward the downstream side in the traveling direction A of the curve belt 15.

Then, the oscillating holding rollers 82 and 84
Is based on the travel of the curve belt 15
In the state of being sandwiched between the reference lines L2 and L3, the rotation is driven around a rotation center axis X inclined at a predetermined angle α toward the downstream side of the curve belt 15 in a plan view, so that the curve belt 15 is moved from the front and back to the outer circumference. Energize towards.

As a result, the curved belt 15 is
Side movement is prevented, a stable running state is maintained,
The transferred object W placed on the upper surface of the transfer belt main body 91 is appropriately transferred.

When the transported object W is conveyed so as to draw a circular movement trajectory in the clockwise direction in FIG. 2, a driving direction switch (not shown) is operated and then a driving switch (not shown) is operated. Then, the motor 21 of the driving means 16 is operated, and the curve belt 15 is caused to travel in the opposite traveling direction A.

Then, the nipping rollers 82 of the forward-side urging means 51a and 51b and the backward-side urging means 52a and 52b
84 receives the driving force from the curve belt 15 and automatically swings around the support shaft 61 toward the downstream side in the traveling direction A of the curve belt 15.

Then, the oscillating holding rollers 82 and 84
Is based on the travel of the curve belt 15
In the state of being sandwiched between the reference lines L2 and L3, the rotation is driven around a rotation center axis X inclined at a predetermined angle α toward the downstream side of the curve belt 15 in a plan view, so that the curve belt 15 is moved from the front and back to the outer circumference. Energize towards.

As a result, the curved belt 15 has the arc center O
Side movement is prevented, a stable running state is maintained,
The transferred object W placed on the upper surface of the transfer belt main body 91 is appropriately transferred.

The curved belt 15 is pulled from the center O of the arc for cleaning, replacement, and the like, so that the curving belt 15 is pinched by the pinching rollers 82 and 84, and the driving roller 27 is pinched between the pinch rollers 31 and 41. The state can be released and the frame 3 can be easily removed.

Referring to FIG. 15, the urging rollers 82 and 84 of the urging means 17 exert an urging force on the curve belt 15 in the outer peripheral direction along the reference lines L2 and L3 which coincide with the radial direction a. Will be described. In FIG. 15, μ1 is a coefficient of friction between the nipping rollers 82 and 84 and the curve belt 15, and P1 is a pressing force of the nipping rollers 82 and 84.

In the state where the curve belt 15 is running by the rotation of the driving roller 27 of the driving means 16, first, considering the force acting on the nipping rollers 82 and 84, the nipping rollers 82 and 84 Receives force from 15 and holds the rollers 82 and 84
Is applied with a force of f1 = μ1 P1.

The component force of the force f1 in the axial direction of the rotation center axis X of the nipping rollers 82 and 84 and the component force in the direction perpendicular to the rotation center axis X are f1 sinα and f1 cosα.

Next, considering the force acting on the curved belt 15, the curved belt 15 is subjected to a force R from the nipping rollers 82 and 84.
= F1 sinα, and the component of the force R in the radial direction of the curve belt 15, that is, in the outer peripheral direction along the reference lines L2 and L3, is Rcosα = μ1P1 sinαcosα.
Therefore, the force for urging the curve belt 15 outward by the nipping rollers 82 and 84 is μ1 P1 sin αcosα.

Then, the curve belt 15 of the above embodiment is used.
According to this, both inclined joining ends 9 of the conveyor belt body 91
Due to the dispersion of the stresses acting on the transfer belts 2 and 97, compared to the conventional structure shown in FIG. 16 and the like, the connection portions of the inclined connection ends 92 and 97 of the conveyor belt main body 91 based on the urging force of the sandwiching rollers 82 and 84 are opened. This can reduce the force required to move the conveyor belt 91
Can be properly prevented.

Further, since the predetermined angle θ1 of one of the wavy joining ends 92 of the curved belt 15 is set to about 30 degrees, an unreasonable load is applied from the end rollers 6a and 6b to the joining portion of the conveying belt main body 91. While avoiding this, it is possible to reliably prevent the transport belt main body 91 from being damaged. For example, a predetermined angle θ1
When the transport belt body 91 is bent and passes through the end rollers 6a and 6b, an unreasonable load is applied to the joining portion of the transport belt body 91 when the transport belt body 91 is bent.
91 may be damaged. However, in the configuration in which the predetermined angle θ1 is set to about 30 degrees, as shown in FIG. 13, the transport belt main body 91 smoothly bends without passing an excessive load and passes through the end rollers 6a and 6b.

Further, since the reinforcing sheet member 100 for reinforcing the joining portion of the conveyor belt body 91 is embedded in the conveyor belt body 91, the thickness of the conveyor belt body 91 increases due to the presence of the reinforcing sheet member 100. Without, the conveyor belt body
The thickness dimension of 91 is substantially constant throughout, so
Smooth and stable traveling of the transport belt main body 91 can be realized while reinforcing the joining portion of the transport belt main body 91 with the reinforcing sheet member 100. For example, when the transport belt body 91 travels,
The transport belt main body 91 does not fluctuate, and the hiccup phenomenon does not occur at low speed. The flexibility with respect to the end rollers 6a and 6b is also good.

Further, since the reinforcing sheet body 100 is located inside the conveyor belt main body 91, it does not contact the nipping rollers 82 and 84,
No wear and no cracks.

Further, since the reinforcing sheet body 100 is formed only of the parallelogram-shaped reinforcing sheet 100a, the reinforcing sheet body 10
Compared to a configuration in which 0 is formed by a plurality of sheet pieces, the number of parts is small, the configuration is simple, and the transport belt body is
There is no need to form a plurality of accommodation recesses 106 in the 91 by shaving work, so that productivity is improved and strength of the transport belt main body 91 against cracks can be improved.

On the other hand, the forward-side urging means 51a, 51b and the backward-side urging means 52a, 52b detect the traveling direction A of the curve belt 15, and a predetermined curve belt 15 corresponding to the detected traveling direction A. This curve belt toward the outer peripheral side
Energize 15. Therefore, regardless of whether the traveling direction A of the curve belt 15 is the forward direction or the reverse direction, it is possible to reliably prevent the curve belt 15 from moving toward the arc center O, and to operate the switching lever and the like. Operability can be improved.

Further, by dispersing the force for urging the curved belt 15 to the outer peripheral side on the front and back surfaces of the curved belt 15,
The two sandwiching rollers 82 and 84 can suppress the generation of the respective frictional heat, so that the deformation of the curved belt 15 due to the heat of the transport belt main body 91 can be reduced, and the stable running of the curved belt 15 can be realized.

Further, the forward-side urging means 51a, 51b and the backward-side urging means 52a, 52b are located at four locations spaced apart from each other in the circumferential direction on the outer peripheral side of the curved belt 15,
Since the curve belt 15 is urged toward the outer periphery from the front and back surfaces at these four locations, even if the width of the curve belt 15 in the direction intersecting the running direction A is relatively long, the arc center of the curve belt 15 Movement to the O side can be appropriately prevented. That is, the four forward-side urging means 51a, 51b and the backward-side urging means 52a, 52b can apply a uniform urging force distributed in the circumferential direction to the curve belt 15, so that the curve belt 15 Even if the overall width of the curved belt conveyor is increased by increasing the width, the curved belt 15
The curved belt 15 can be run smoothly without causing the outward road surface 15a to bulge and moving the curved belt 15 to the arc center O side.

The forward pinch roller 31 of the driving means 16
However, along with the driving roller 27, the outward road surface 15a of the curved belt 15 is
In line contact, press the forward path surface 15a of the curve belt 15 against the drive roller 27, and
Is the return surface 15b of the curve belt 15 together with the drive roller 27.
Is held in line contact, and the return path surface 15b of the curve belt 15 is pressed against the drive roller 27, so that the drive force can be efficiently transmitted from the drive means 16 to the curve belt 15, without using a take-up device or the like having another configuration. By rotating the drive roller 27 in the forward or reverse direction, the curved belt 15 can be appropriately run in the forward or reverse direction.

In the above embodiment, one inclined joining end 92 and one wavy joining end 93 are formed at one end in the circumferential direction of the conveyor belt main body 91 of the conveyor belt main body 91 of the curved belt 15. Although the other inclined joining end 97 and the other wavy joining end 98 have been described as being formed at the other end in the circumferential direction, for example, although not shown, the wavy joining ends 93 and 98 are used instead of the wavy joining ends 93 and 98. Alternatively, a configuration in which a joining end portion having another shape is formed may be used.

Further, the urging means 17 of the curved belt conveyor using the curved belt 15 of the above-described embodiment is arranged at, for example, four positions spaced from each other in the circumferential direction of the outer peripheral portion of the curved belt 15. However, according to the width dimension of the curved belt 15, the arc center O of the curved belt 15 is
The configuration may be arranged at more positions, such as six places, eight places, etc., set to appropriately prevent the movement to the side, or may be arranged at four or less positions.

Further, in the above embodiment, the reinforcing sheet body 100 is described as being formed only by the parallelogram-shaped reinforcing sheet 100a. However, for example, as shown in FIG. A plurality of, for example, two, first reinforcing sheet pieces 101 and a second reinforcing sheet are arranged on a plurality of, for example, two, reinforcing sheets 100 positioned over a part between the bonding end 92 and the other inclined bonding end 97. The piece 102 may be formed.

That is, the reinforcing sheet 100 shown in FIG.
Is formed by a first reinforcing sheet piece 101 such as a rectangular reinforcing canvas and a second reinforcing sheet piece 102 such as a rectangular reinforcing canvas located apart from the first reinforcing sheet piece 101. ing.

The first reinforcing sheet piece 101 is located at the outer peripheral edge of the conveying belt main body 91, and its longitudinal direction coincides with the direction orthogonal to the radial direction a. Second reinforcing sheet piece 102
Is located near the outer peripheral edge of the conveyor belt body 91, and its longitudinal direction coincides with the direction orthogonal to the radial direction a. The width of the second reinforcing sheet piece 102 is set to be slightly longer than the width of the first reinforcing sheet piece 101. Further, the first reinforcing sheet piece 101 is arranged at a position not sandwiched by the sandwiching rollers 82 and 84, and the second reinforcing sheet piece 102 is similarly arranged at a position not sandwiched by the sandwiching rollers 82 and 84. I have. In this manner, the reinforcing sheet body 100 is arranged at a position where it is not nipped by the nipping rollers 82 and 84 so as not to cause unnecessary load on the nipping rollers 82 and 84.
The stable rotation of is ensured.

[0093]

According to the first aspect of the present invention, the dispersion of the stress acting on the inclined joining end of the conveying belt main body allows the joining portion of the conveying belt main body to be opened based on the urging force of the nipping roller as compared with the related art. Since this force can be reduced, damage to the transport belt main body can be appropriately prevented.

According to the second aspect of the present invention, it is possible to open the joint portion of the conveyor belt main body based on the urging force of the nipping roller as compared with the related art, by dispersing the stress acting on the inclined joint end of the conveyor belt main body. Therefore, damage to the transport belt main body can be appropriately prevented.

According to the third aspect of the present invention, it is possible to prevent an excessive load from being applied to the transport belt main body from the end rollers when the transport belt main body is wound around, for example, a pair of end rollers. In addition, it is possible to reliably prevent the transport belt main body from being damaged.

According to the fourth aspect of the present invention, since the thickness of the conveying belt main body does not increase due to the presence of the reinforcing sheet body, the reinforcing sheet body reinforces the joint portion of the conveying belt main body while the conveying belt main body is reinforced. Can achieve stable running.

According to the fifth aspect of the present invention, it is possible to open the joint portion of the transport belt main body based on the urging force of the nipping roller as compared with the related art, by dispersing the stress acting on the inclined joining end of the transport belt main body. Therefore, damage to the transport belt main body can be appropriately prevented.

According to the sixth aspect of the present invention, the dispersion of the stress acting on the inclined joining end portion of the conveyor belt body makes it possible to open the joint portion of the conveyor belt body based on the urging force of the nipping roller as compared with the related art. Therefore, damage to the transport belt main body can be appropriately prevented.

According to the seventh aspect of the present invention, when the transport belt main body is used, for example, wound around a pair of end rollers, it is possible to prevent an excessive load from being applied to the transport belt main body from the end rollers. In addition, it is possible to reliably prevent the transport belt main body from being damaged.

According to the eighth aspect of the present invention, the thickness of the transport belt main body does not increase due to the presence of the reinforcing sheet body. Can achieve stable running.

[Brief description of the drawings]

FIG. 1 is a plan view of a curved belt conveyor using a conveyor belt for a curved belt conveyor according to an embodiment of the present invention.

FIG. 2 is a plan view when the curved belt conveyor travels in the reverse direction.

FIG. 3 is a side view of the curved belt conveyor.

FIG. 4 is a side view of a driving means of the curved belt conveyor.

FIG. 5 is a plan view of an urging means of the curved belt conveyor.

FIG. 6 is a side view of the urging means of the curved belt conveyor.

FIG. 7 is a side view of the urging means of the curved belt conveyor.

FIG. 8 is a plan view showing a connection state of a curved belt conveyor transport belt used in the curved belt conveyor.

FIG. 9 is a partially enlarged plan view of the same conveyor belt for a curved belt conveyor.

FIG. 10 is a sectional view taken along the line AA in FIG. 8;

FIG. 11 is a sectional view taken along the line BB in FIG. 8;

FIG. 12 is a diagram showing a state in which the conveyor belt for the curved belt conveyor is held by holding rollers.

FIG. 13 is a diagram showing a state in which the conveyor belt for the curved belt conveyor is bent by an end roller.

FIGS. 14 (a) to (d) are views for explaining a connecting process of the conveyor belt for the curved belt conveyor according to the first embodiment.

FIG. 15 is a view for explaining a force exerted on the conveyor belt for the curved belt conveyor by the urging means of the curved belt conveyor.

FIG. 16 is a partial plan view of a conveyor belt for a curved belt conveyor according to another embodiment of the present invention.

FIG. 17 is a plan view of a conventional conveyor belt for a curved belt conveyor.

18 is a sectional view taken along the line CC in FIG.

[Explanation of symbols]

15 Curved belts 82 and 84 as conveyor belts for curved belt conveyors Nipping roller 91 Conveyor belt body 92 One inclined joining end 93 One wavy joining end 94 Oblique side of wave 97 The other inclined joining end 98 The other Corrugated joint end 100 Reinforced sheet body A Radial direction B Inclined direction for inclined joint end C Inclined direction for corrugated joint end

Continuing on the front page (72) Inventor Toshihide Shimizu 900 Furuouchi, Noguchi-cho, Kakogawa-shi, Hyogo Prefecture F-term in Okura Transport Equipment Co., Ltd. (reference) 3F023 BA02 BB01 BC01 DA03 3F024 AA19 CA04 CB03 CB09 CB13

Claims (8)

[Claims] 1. A method for connecting a conveyor belt for a curved belt conveyor, which is urged radially outward by a sandwiching roller for sandwiching the outer peripheral side, comprising: an end in a circumferential direction of an arc-shaped conveyor belt main body. In the portion to be sandwiched by the sandwiching roller in the portion, one inclined joining end portion is formed to have a length that traverses the sandwiching roller along an inclined direction inclined at a predetermined acute angle with respect to a radial direction, At the other end in the circumferential direction of the conveyor belt body, the other inclined joining end is formed in a state corresponding to the one inclined joining end, at the portion sandwiched by the sandwiching roller; A method of connecting a conveyor belt for a curved belt conveyor, comprising joining one end in a circumferential direction including a joining end portion and another end in a circumferential direction including the other inclined joining end portion to each other. 2. A method for connecting a conveyor belt for a curved belt conveyor which is urged radially outward by a sandwiching roller for sandwiching the outer peripheral side, comprising: one end in a circumferential direction of an arc-shaped conveyor belt main body. In the portion of the portion sandwiched by the sandwiching rollers, one inclined joining end is formed along an inclined direction inclined at a predetermined acute angle with respect to the radial direction, and is sandwiched by the sandwiching rollers. The other wavy joint end is formed so that the oblique side of the wave of the one wavy joint end matches an inclined direction inclined at an angle larger than the predetermined angle with respect to the radial direction, At the portion sandwiched by the sandwiching roller at the other end in the circumferential direction of the belt body, the other inclined joining end is formed in a state corresponding to the one inclined joining end, and hand In addition to the portion held, the other wavy joint end is formed in a state corresponding to the one wavy joint end, the one inclined joint end and the one wavy joint end, and the other A method of connecting a conveyor belt for a curved belt conveyor, wherein an inclined joining end and the other wavy joining end are joined by abutting each other. 3. The method according to claim 1, wherein the predetermined angle of the one end of the wavy joint is about 30 degrees.
The method for connecting a conveyor belt for a curved belt conveyor according to claim 1 or 2, wherein the setting is made at each time. 4. A reinforcing sheet body is attached to the conveyor belt body without increasing the thickness dimension of the conveyor belt body, and one inclined joint end portion and the other inclined joint end portion of the conveyor belt body are provided. The method for connecting a conveyor belt for a curved belt conveyor according to any one of claims 1 to 3, wherein the conveyor belt is positioned in a state of straddling. 5. A conveyor belt for a curved belt conveyor, which is urged radially outward by a sandwiching roller for sandwiching the outer peripheral side, comprising: an arc-shaped conveyor belt main body; One inclined joining end formed at a portion sandwiched by the sandwiching roller at one end in the circumferential direction to have a length traversing the sandwiching roller along an inclined direction inclined at a predetermined acute angle with respect to a radial direction. And the other inclined joining end formed in a state corresponding to the one inclined joining end to a portion sandwiched by the sandwiching roller at the other end in the circumferential direction of the transport belt main body. A curve, wherein one circumferential end including the one inclined joint end and the other circumferential end including the other inclined joint end are butted and joined to each other. belt The conveyor belt for Nbeya. 6. A conveyor belt for a curved belt conveyor which is urged radially outward by a sandwiching roller for sandwiching the outer peripheral side, the arc-shaped conveyor belt main body, and A part to be clamped by the clamping roller at one end in the circumferential direction, one inclined joining end formed along an inclined direction inclined at a predetermined acute angle with respect to a radial direction; and One wavy joining end formed so that the oblique side of the wave coincides with an inclined direction inclined at an angle larger than the predetermined angle with respect to the radial direction, other than the portion sandwiched by the sandwiching roller at one end in the circumferential direction. And the other inclined portion formed in a state corresponding to the one inclined joining end portion at a portion sandwiched by the sandwiching roller at the other end in the circumferential direction of the transport belt main body. A joining end portion, in addition to the portion sandwiched by the sandwiching roller at the other end in the circumferential direction of the transport belt main body, and the other wavy joining end portion formed in a state corresponding to the one wavy joining end portion; The one inclined joining end and the one wavy joining end, and the other inclined joining end and the other wavy joining end are abutted and joined to each other. Conveyor belts for curved belt conveyors. 7. The predetermined angle of one of the wavy joint ends is about 3
7. The conveyor belt for a curved belt conveyor according to claim 5, wherein the conveyor belt is set to 0 degrees. 8. The transport belt main body is attached to the transport belt main body without increasing the thickness dimension of the transport belt main body, and straddles between one inclined joint end portion and the other inclined joint end portion of the transport belt main body. The conveyor belt for a curved belt conveyor according to any one of claims 5 to 7, further comprising a reinforcing sheet member positioned in a state.