JP2009208949A - Roller conveyor device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a roller conveyor device capable of preventing a transferred article from entering into a recessed part between transfer rollers, and stably conveying the transferred article without deteriorating a transferring ability or stopping or stagnating the transferred article. <P>SOLUTION: In this roller conveyor device 100 for holding a plurality of transfer rollers 111 with a conveyor frame 130, an endless auxiliary belt 140 narrower than the width of transfer rollers 111 wraps around a plurality of the transfer rollers 111. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a roller conveyor device having a plurality of transport rollers constituting a transport surface of a transported object, and a conveyor frame that holds the plurality of transport rollers in parallel and rotatably arranged around its axis.

  2. Description of the Related Art Conventionally, a roller conveyor device is known as a device for placing a conveyed product on a conveying surface and conveying the conveyed product in a conveying direction in a conveyed product conveying apparatus.

  Then, as shown in FIG. 6, these roller conveyor devices 500 are arranged in parallel so as to be rotatable around a plurality of conveying rollers 510 constituting the conveying surface of the conveyed product W and the axis 520 of the conveying rollers 510. The conveyor frame 530 is held, and the conveyance roller 510 is driven or freely rotated to convey the conveyed product W toward the branch conveyor device 590 (see, for example, Patent Document 1). .

As shown in FIG. 7, such a conventional roller conveyor device is configured by a virtual plane H connecting the apexes 515 of cylindrical conveyance rollers 510 whose conveyance surfaces are arranged in parallel, and in fact, apexes 515 of the adjacent conveyance rollers 510. Since the gap is a recess 550, when the transported object W is deformed below the virtual plane H, the front end of the transported object W enters the recess 550 and contacts the portion 516 below the vertex 515 of each transport roller 510. In the worst case, there is a possibility that the conveyed product W stops and stays.
In addition, in applications such as delivering a conveyed product from an inclined belt conveyor device to a horizontal portion, if a roller conveyor device is used as the horizontal portion conveyor device, the front end of the conveyed product W is recessed in the concave portion 550 as described above. Normally, a belt conveyor device is used because it enters the belt 550 and comes into contact with the portion 516 below the apex 515 of each conveyance roller 510 to form conveyance resistance. In the worst case, the conveyance object W may stop and stay. For the same reason, the relative angle at the time of connecting between the roller conveyor devices is also used only when the angle is about 3 ° to 5 °.

When transporting such deformed transport objects or when the relative angle at the time of conveyor transfer is large, it is common to use a belt conveyor device or the like in which the transport surface can be configured in an actual planar shape instead of a roller conveyor device. Met.
Moreover, as a roller conveyor apparatus 600 that conveys a deformed conveyed product, as shown in FIGS. 8 and 9, a plurality of conveying rollers 610 that constitute a conveying surface of the conveyed product W, and shafts 620 of the plural conveying rollers 610. The auxiliary belt 640 is fixed to the conveyor frame 630 and provided on the conveyance surface side of the plurality of conveyance rollers 610, and the friction on the conveyance surface side of the auxiliary belt 640 is provided. It is known that the coefficient is reduced and the conveyed product W is slid and conveyed to prevent entry into the recesses 650 between the conveying rollers 610 due to deformation of the conveyed product W (see, for example, Patent Document 2). .)
Japanese Patent No. 3228266 (first page, FIG. 7) Japanese Utility Model Publication No. 62-68905 (first page, FIG. 1)

However, a belt conveyor device or the like having a flat conveying surface is more complicated and expensive than a roller conveyor device, and is also advantageous for roller conveyor devices because it uses a concave portion between conveying rollers. There is a problem that it is extremely difficult to install various additional devices due to slides and stays.
In addition, the conventional roller conveyor device equipped with an auxiliary belt is fixed with the auxiliary belt and causes friction with the conveyed product. Therefore, the conveyance resistance increases and the conveying ability decreases, or the conveyed item stops and stays. There was a problem that.

  The present invention solves the problems of the prior art as described above, that is, an object of the present invention is to provide a plurality of transport rollers constituting a transport surface of a transported object, and the plurality of transport rollers as shafts thereof. In a roller conveyor apparatus having a conveyor frame that is rotatably arranged in parallel around the roller conveyor apparatus, the structure of each of the conveyance rollers of the conveyed object according to the relative angle at the time of deformation or connection is reduced without losing the function as the roller conveyor apparatus with a simple configuration. An object of the present invention is to provide a roller conveyor device capable of stably transporting a transported object while preventing entry into a concave portion therebetween and without causing a decrease in transport capability or stopping and staying of the transported object.

  The invention according to claim 1 is a roller conveyor apparatus having a plurality of transport rollers constituting a transport surface of a transported object, and a conveyor frame that holds the plurality of transport rollers arranged in parallel so as to be rotatable around its axis. The plurality of transport rollers are provided with endless auxiliary belts that are narrower than the width of the plurality of transport rollers, thereby solving the problem.

  In the invention according to claim 2, in addition to the configuration of the roller conveyor device according to claim 1, the conveying roller includes a ring portion that guides both sides in the width direction of the auxiliary belt. The problem is further solved.

  In the invention according to claim 3, in addition to the configuration of the roller conveyor device according to claim 1, the conveying roller includes a groove portion that accommodates and guides the auxiliary belt. It will solve further.

  In the invention according to claim 4, in addition to the configuration of the roller conveyor device according to claim 1, the conveyor frame includes guide members that guide both sides in the width direction of the auxiliary belt. The problem is further solved.

  The roller conveyor device of the present invention has a plurality of transport rollers constituting a transport surface of a transported object, and a conveyor frame that holds the plurality of transport rollers arranged in parallel so as to be rotatable around its axis, thereby providing a roller conveyor. Various additional devices can be installed for the purpose of sliding or staying the conveyed product utilizing the recesses between the conveying rollers, which is the original advantage of the device, and the following special effects can be achieved.

  That is, in the roller conveyor device according to the first aspect of the present invention, the plurality of transport rollers are stretched between endless auxiliary belts that are narrower than the width of the plurality of transport rollers, so The auxiliary belt supports a part of the bottom surface of the conveyed product in the recess, and it can prevent the conveyed product from entering the concave portion between the conveying rollers due to the deformation or relative angle at the time of connection, so that the conveyance capacity is reduced or conveyed It is possible to transport the object without stopping and staying.

  In the roller conveyor device according to the second aspect of the present invention, in addition to the effect exhibited by the roller conveyor device according to the first aspect, the transport roller includes a ring portion that guides both sides of the auxiliary belt in the width direction. As a result, the auxiliary belt can be prevented from meandering in the width direction of the transport roller, so that transport without lowering the transport capability or stopping the transported object from staying can be stably performed.

  In addition to the effect of the roller conveyor device according to claim 1 or 2, the roller conveyor device of the invention according to claim 3 includes a groove portion that accommodates and guides the auxiliary belt. As a result, it is possible to eliminate the level difference of the conveyance surface due to the thickness of the auxiliary belt and to prevent the auxiliary belt from meandering in the width direction of the conveyance roller. Therefore, it is possible to carry out the transportation without stagnating.

  According to a fourth aspect of the present invention, in addition to the effect achieved by the first aspect of the present invention, the conveyor frame includes guide members that guide both sides of the auxiliary belt in the width direction. As a result, it is possible to prevent the auxiliary belt from meandering in the width direction of the transport roller, so that it is possible to stably perform transport without lowering the transport capability and preventing the transported object from stopping and staying. The form of the conveying roller can be the same as the conveying roller of the conventional roller conveyor device, and it can cope with various auxiliary belt passing forms only by changing the position of the guide member, thus improving the versatility. Can do.

  The roller conveyor device of the present invention is a roller conveyor device having a plurality of transport rollers constituting a transport surface of a transported article and a conveyor frame that holds the plurality of transport rollers in parallel and rotatably arranged around its axis. The plurality of transport rollers are stretched over an endless auxiliary belt that is narrower than the width of the plurality of transport rollers, and with a simple configuration, the function as a roller conveyor device is not impaired. Prevents the transported material from entering the recesses between the transport rollers, and demonstrates the effect of transporting the transported material stably without reducing the transport capacity or stopping the transported material Any specific embodiment may be used as long as it does.

That is, the auxiliary belt of the present invention may be only one, or a plurality of auxiliary belts may be arranged at a plurality of locations in the width direction of the conveying roller.
Further, the auxiliary belt of the present invention may be stretched over all the transport rollers in the transport direction of the roller conveyor device, or may be stretched over only a part of the transport rollers.
Furthermore, a plurality of auxiliary belts may be hung on a plurality of sets of conveying rollers in the conveying direction of the roller conveyor device, or the conveying rollers that are hung in both the conveying direction and the width direction and the positions in the width direction that are hung may be appropriately combined. good.

  The shape of the auxiliary belt used in the present invention may be any of a flat belt shape, a round shape, or a shape having protrusions on the surface, and the material of the auxiliary belt may be rubber, synthetic resin or cloth. Any material may be used, and can be appropriately selected according to the shape, weight, material, and the like of the transport object to be applied.

In addition, the ring portion provided in the conveyance roller of the present invention may be formed integrally with the conveyance roller, or may be one in which only the ring portion is fitted to the conveyance roller and fixed by an appropriate means. good.
Further, the ring portion provided in the conveyance roller of the present invention may be provided on all of the conveyance rollers on which the auxiliary belt is stretched, and provided on only a part of the conveyance rollers as long as it can prevent meandering in the width direction. Also good.

  Further, the guide member provided in the conveyor frame of the present invention may be a rod-shaped member or a plate-shaped member, and the number of the installed members is any number as long as it can prevent meandering in the width direction. May be. In addition, it is preferable that the guide member is composed of bolts that can be attached to and detached from the conveyor frame, so that the number of auxiliary belts and the position of the auxiliary belt can be freely set.

Furthermore, each of the plurality of transport rollers according to the present invention may be a free roller, or may be driven to rotate by a driving device to transport a transported object.
Further, one or a plurality of transport rollers may be driven, all the transport rollers may be driven, or all the transport rollers may be free rollers.

Below, the roller conveyor apparatus which is an Example of this invention is demonstrated based on drawing.
FIG. 1 is a perspective view of a roller conveyor apparatus according to an embodiment of the present invention, FIG. 2 is a cross-sectional view of the roller conveyor apparatus according to the first embodiment of the present invention, and FIG. FIG. 4 is a sectional view of a roller conveyor apparatus according to a third embodiment of the present invention, and FIG. 5 is a roller conveyor apparatus according to a third embodiment of the present invention. It is an enlarged view of the guide member.

  First, as shown in FIG. 1, a roller conveyor apparatus 100 according to an embodiment of the present invention includes a plurality of conveying rollers 110 that are rotatably arranged around a shaft 120 and held on a conveyor frame 130. The transport object W is configured to be placed with a virtual plane connecting the apexes of the transport rollers 110 as a transport surface, and each transport roller 110 is rotationally driven by a driving device (not shown) to transport the transport object W.

Two endless auxiliary belts 140 that are narrower than the width of the transport roller 110 are spanned across the plurality of transport rollers 110 in parallel in the width direction of the transport roller 110, and concave portions between the respective transport rollers 110. In 150, the auxiliary belt 140 supports a part of the bottom surface of the conveyed product W, and the conveyed product W is prevented from entering the recess 150 between the conveying rollers 110 due to a relative angle at the time of deformation or connection.
In FIG. 1, the auxiliary belt 140 is not stretched over the transport rollers 110 at both ends in the transport direction, but may be spanned over all the transport rollers 110 including both ends.

  Therefore, the conveyance roller 110 of the roller conveyor apparatus 100 according to the first embodiment of the present invention will be described. As shown in FIG. 2, the conveyance roller 110 has ring portions 111 formed at four positions in the width direction of the outer peripheral surface thereof. The two auxiliary belts 140 that are stretched are guided by the ring portions 111 in pairs at two locations from both sides in the width direction so that the auxiliary belt 140 meanders in the width direction of the conveying roller 110. It is preventing.

  Next, the conveying roller 210 of the roller conveyor apparatus according to the second embodiment of the present invention will be described. As shown in FIG. 3, the conveying roller 210 has groove portions 212 formed at two locations in the width direction of the outer peripheral surface thereof. The suspended auxiliary belt 140 is guided from both sides in the width direction by being accommodated in the two groove portions 212 to prevent the auxiliary belt 140 from meandering in the width direction of the conveying roller 210 and The level difference of the conveyance surface due to the thickness of the belt 140 is reduced.

Next, a description will be given of the transport roller 310 and the conveyor frame 330 of the roller conveyor apparatus according to the third embodiment of the present invention. As shown in FIG. 4, nuts for screwing guide bolts 331 as guide members to the conveyor frame 330. 332 is fixed, and the conveyance roller 310 has a cylindrical shape with a smooth outer peripheral surface, and an auxiliary belt 140 is stretched around the conveyance roller 310. Four guide bolts 331 serving as guide members are erected on the nut 332 located in the recess 350 between the adjacent conveyance rollers 310 on which the auxiliary belt 140 is stretched on the conveyor frame 330, and the two that are stretched on the nut 332. The auxiliary belt 140 is guided from both sides in the width direction by a pair of two guide bolts 331 so that the auxiliary belt 140 is prevented from meandering in the width direction of the conveying roller 310.
As shown in FIG. 4, the guide member may be configured such that the guide bolt 331 is in direct sliding contact with the auxiliary belt 140. As shown in a partially enlarged view in FIG. The guide roller 333 may have any shape as long as it guides the auxiliary belt 140.
Also, the fixing means of the guide member is not limited to screwing onto the nut 332, but may be welding or fitting as long as it is fixed to the conveyor frame 330, and its specific form is any But it ’s okay.

  According to the roller conveyor apparatus of the first to third embodiments of the present invention thus obtained, the slide or stay of the conveyed product utilizing the recesses between the conveyance rollers, which is the original advantage of the roller conveyor apparatus, etc. Therefore, it is possible to install various additional devices, and the auxiliary belt supports a part of the bottom surface of the conveyed product in the recesses between the respective conveying rollers, and the conveyed item depends on the relative angle at the time of deformation or transit. Since it can prevent entering into the recessed part in between, it can convey, without a conveyance capability falling, or a conveyed product stopping and staying.

  Further, since the deformation of the conveyed product can be prevented and it can be prevented from entering the recesses between the respective conveyance rollers, the interval between the conveyance rollers can be set large, so that the manufacturing cost of the roller conveyor device can be reduced, and the conveyance roller The effect is enormous, for example, the degree of freedom of installation of various additional devices is greatly improved due to the sliding or staying of the conveyed product using the recesses in between.

  Further, according to the roller conveyor device of the third embodiment of the present invention, if only nuts are fixed to a predetermined number of predetermined positions on the conveyor frame in advance, it is possible to change the type and transport conditions of the transported object only by attaching / detaching the guide bolt. It is possible to easily cope with a wide variety of auxiliary belt passing forms.

The perspective view of the roller conveyor apparatus which is an Example of this invention. Sectional drawing of the roller conveyor apparatus which is 1st Example of this invention. Sectional drawing of the roller conveyor apparatus which is 2nd Example of this invention. Sectional drawing of the roller conveyor apparatus which is 3rd Example of this invention. The enlarged view of the guide member of the roller conveyor apparatus which is 3rd Example of this invention. The perspective view of the conventional roller conveyor apparatus. The partial expanded sectional view of the conventional roller conveyor apparatus. The side view of the roller conveyor apparatus using the conventional auxiliary belt. The front view of the roller conveyor apparatus using the conventional auxiliary belt.

Explanation of symbols

100, 500, 600... Roller conveyor device 110, 210, 310, 510, 610... Conveying roller 111.
212 ・ ・ ・ Groove
515: vertex 120, 220, 320, 520 ... axis 130, 230, 330, 530, 630 ... conveyor frame
331 Guide bolt
332 ... guide nut 140 640 ... auxiliary belt 150, 250, 350, 550, 650 ... recess
590: Branch conveyor device W: Conveyed material

Claims (4)

In a roller conveyor apparatus having a plurality of transport rollers constituting a transport surface of a transport object and a conveyor frame that holds the plurality of transport rollers arranged in parallel so as to be rotatable around its axis,
A roller conveyor device, wherein the plurality of transport rollers are wound around an endless auxiliary belt that is narrower than the width of the plurality of transport rollers.   The roller conveyor device according to claim 1, wherein the conveyance roller includes a ring portion that guides both sides of the auxiliary belt in the width direction.   The roller conveyor device according to claim 1, wherein the conveyance roller includes a groove portion that accommodates and guides the auxiliary belt.   The roller conveyor apparatus according to claim 1, wherein the conveyor frame includes guide members that guide both sides of the auxiliary belt in the width direction.

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