JPS63201000A - Round tooth holder for heat cutter - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention provides a printed tape, a western umbrella nine blanket border tape,
A heat cut machine that cuts tape used for ink ribbons etc. from a long chemical fiber woven fabric with a round blade and at the same time lightly welds the cut edges using heat to prevent fraying. This invention relates to a blade holding device.

(Prior Art) Conventionally, as a holding device for a round blade used in this type of heat cutting machine, there is one device disclosed in Utility Model Application No. 1392-1983 filed by the applicant of the present application.
As described in the No. 91 application, the circular blade heated by a heat radiator is rotatably supported on a fork-shaped support via its central shaft.

(Problem to be solved by the invention) However, because the round blade can be heated up to nearly 300 degrees Celsius depending on the type of chemical fiber woven fabric to be cut, the support that forms the bearing part was made of a heat-insulating and thermally poor conductor. However, there are cases where the spindle of the round blade becomes unable to rotate or malfunctions in a relatively short period of time due to smoke buildup, etc., making it impossible to continue stable heat-cutting work. A possible solution was to widen the gap between the bearings, but this would not solve the problem because it would impair cutting accuracy and there was a limit to the size of the gap.

The present invention was devised in view of the above-mentioned conventional problems, and by holding a rolling round blade that is heated to a high temperature at its peripheral edge, the round blade requires special lubrication for a long time. To provide a round blade holding device for a heat cutting machine, which enables stable transfer without swinging as the support surface of the woven fabric moves, and allows extremely easy replacement maintenance. purpose.

(Means for Solving the Problems) The structure of the present invention for achieving the above object will be explained with reference to FIGS. 1 to 4, which correspond to embodiments.

The round blade holding bag [1 of the heat cutting machine of the present invention] heat cuts a long chemical fiber woven fabric T that is driven to run in the longitudinal direction into a tape t on the support surface 30a that moves in the running direction. A mounting W42 that holds the rolling round blade 41 of the heat cutting machine 1, and the round blade 41 is connected to the supporting frame 44 and the support surface via a guide body 47, 47 that rolls into contact with the outer peripheral edge of the round blade 41. 30a, and a heating means 43 that heats the round blade 41, the at least two guide bodies 47, 47 are brought into contact with the support surface 30a of the round blade 41 at a contact point P1. The support frame 4 is arranged so as to form a triangle and include the center point of the round blade 41 within the triangle.
It is characterized by being placed in 4.

(Function) The main round blade holding device is arranged so as to form a triangle with the contact point P1 of the round blade 41 against the support surface 30a of the woven fabric T, and to include the center point of the round blade 41 within the triangle. The round blade 41 is attached to the support frame 44 via at least two guide bodies 47, 47.
At the same time, the biasing means 45 stably biases the support surface 30a at the outer peripheral edge without using a support shaft. A guide body 4 that rolls into contact with the outer periphery of the round blade 41, which is heated intensively by the heating means 43 and is away from the center.
The heat load of 7.47 is significantly reduced compared to the conventional support shaft at the center of the round blade, and the rotation of the round blade 41 is guided stably without causing seizure.

(Example) Hereinafter, an example of the round blade holding device for a heat cutting machine of the present invention will be described in detail with reference to the drawings.

In FIG. 1 and FIG. 2, first, the heat cutting mechanism will be explained.

The heat cutting machine 1 of this embodiment includes a box-shaped frame 10 with a relatively shallow depth and a large height and width, and a pair of left and right holding arms 21 protruding forward from the front lower part of the machine base 10. 21, an original roll support means 20 consisting of a support rod 22 which is horizontally suspended in the recessed part of the holding arm and has transfer bearings fixed to both ends; a tension means 25, a cutting support roll 30 which is rotatably suspended horizontally through a pillow block approximately in the center of the machine base 10, and a rubber roller 36 which is pressed against the upper part of this roll by its own weight and rolls. A press means 35 includes a support arm 37 rotatably horizontally supporting a rubber roller 36 and pivotably supported at the rear of the machine base 10, and a plurality of cutting round blades 41 behind the cutting support roll 30. a cutting means 40 which presses and supports the tape t in a relaxed manner; a press operation means 50 which rotates the support arm 37 of the press means 35; and a winding means 60 which winds up the tape t cut by the cutting means 40. , a driving means 70 for rotationally driving the winding means 60 and the cutting support roll 30, and a control means 80 for controlling the operation of the driving means 7o and the cutting means 40.

The tension means 25 includes a main tension rod 26 that is swingably suspended horizontally on the machine base 1o, swing arms 27a and 27b fixed in parallel to both ends of the main tension rod 26, and the swing arms A auxiliary tension rod 28 is suspended horizontally at the outer ends of the main tension rods 27a and 27b, a worm wheel 29a is fixed to the right end of the main tension rod 26, a worm gear 29b meshes with the worm wheel 29a, and the worm gear 29b is further integrally connected to the worm wheel 29a. It consists of a swinging operation section 29 equipped with an operation rod 29c with a handle, and the inclination angles of the arms 27a and 27b are adjusted as appropriate depending on the type and feeding speed of the 1M chemical fiber woven fabric T. .

The cutting support roll 30 is made of a cylindrical carbon steel material that is hardened by hardening (for example, Shore 75. Depth 1 mm) and plated with L chrome, and has a pitch circle with the same diameter as the roll outer diameter at the right end. A spur gear 31 made of aluminum is fastened thereto, and three timing belt pulleys 32, 33, and 34 are fastened to the left end support shaft to provide a support surface 30a during cutting.

On the other hand, the rubber roller 36 is formed by wrapping a rubber plate around the outer periphery of a metal cylindrical body having a support shaft at both ends, and a vinyl spur gear 36a having a pitch circle with the same diameter as the outer diameter of the roller at the right end. The spur gear 31 of the cutting support roll 30 is fixed.
The woven fabric T laid on the roll 30 is fed while being engaged with the roll 30 and being rotationally driven without slipping.

The press operation means 50 includes an auxiliary support section 53 consisting of a swing arm 51 and a connecting link 52, which together with the support arm 37 form a parallelogram swing link mechanism.

Support stands 54 each fixed to both ends of the upper surface of the machine stand 10
and an air cylinder 55 that is swingably suspended from the air cylinder 55 and whose tip end of the piston rod is connected to the support arm 37, and as the piston rod moves upward, the rubber roller 3
6 is separated from the top of the roll 30, and the rubber roller 36 is brought into contact with the top of the roll 30 as the piston rod remains stationary.

As shown in detail in FIGS. 3 and 4, the cutting means 40 according to the gist of the present invention includes a disc-shaped round blade 41 (for example, made of 5KH9 high-speed steel and hardened by quenching) having a cutting edge 41a on the outer periphery. The shore (65) is smaller than the roll 30) and a holding device 42 for this. The holding device 42 includes a support frame 44 that holds the round blade 41 and has a heating means 43 fixed to sandwich the round blade, and a support frame 44 that attaches the round blade 41 toward the support surface 30a of the roll 30 via the support frame 44. It is composed of an abutment 46 provided with a biasing means 45 for applying force. The support frame 44 is sandwiched between a pair of left and right support plates 44a, 44a which sandwich the round blade 41 so that its cutting edge 41a can come into contact with the support surface 30a of the roll, and a heating means. The support arm 44b has an abbreviated shape to which a support arm 43 is fixed, and is pivotably supported at the front end of a support base 46. Support plate 44a.

Between 44a are two sets of guide bodies 47 and 47 that rotatably hold the round blade 41 at the cutting position and transmit the biasing force.
The contact point with those round blades is the roll support surface 30a of the round blade 41
The abutment point P forms a triangle A with the round blade 4 within the triangle A.
1, and is rotatably supported on the support plate 44a by a support shaft 47a. The guide body 47 is assembled with two small ball bearings with a thin spacer sandwiched between them, and the cutting edge is protected by the gap formed between the ball bearings, and the shoulder of the bearing is attached to the tapered side of the edge 41a. There is point contact.

Therefore, since the guide body 47 further rolls via the contact point in accordance with the rolling of the round blade 41, the thermal load received from the round blade is significantly reduced. In addition to the combination of two bearings and a spacer, the guide body 47 can also be formed by a roller having a groove in the center. Further, between the support plates 44a, 44a, there are two sets of auxiliary supports 48, 48 that hold the round blade 41 in the non-cutting position so that it does not fall from the front when separated from the roll 30.
It is attached by screws 48b, 48b via 48a. When replacing the round blade 41, the guide body 47 is opened by loosening the screw 48b in the non-cutting position and rotating the arms 48a and 48a outward from each other as shown by the imaginary lines in FIG.
Similarly, it is constructed by incorporating two ball bearings and a spacer between the arms 48a, 48a. Heating means 4
3 has a fork-shaped portion 43 at the upper end of the support arm 44b.
a is fixed so as to sandwich the round blade 41, and a heat insulating material 43c such as aspest cloth is placed between the supporting plates 44a and 44a.
is interposed.

Pressure part 4 above fork-shaped part 43a of heating means 43
An electric resistance rod-shaped heater 43d is inserted into 3b.

The abutment 46 is movably fixed to a square bar 10a horizontally suspended on the machine 10 behind the cutting abutment roll 3° by means of a screw 46a. is pivotably supported at the rear end. The operating piston 45a of the air cylinder is mounted on the support base 4.
The round blade 41 is connected to the middle stage of the support arm 44b pivoted to the front end of the support frame 44 and the guide body 47.
．． The roll 30 is moved via the auxiliary support 48 to a cutting position (the round blade is shown by a solid line in FIG. 3) and a non-cutting position (the round blade is shown by a phantom line in FIG. 3). still,
The hole in the center of the round blade 41 is used for processing and re-sharpening the round blade. The round blade 41 uses an edge 41a to cut the chemical fiber woven fabric T which cycles on the support surface 30a of the rotating roll 30 into a tape T using pressing force and heat, and at the same time lightly welds the cut edges using heat to prevent fraying. I do.

The winding means 60 includes bellow blocks 6 fixed to both ends of the front of the machine stand 10 above and below the roll 30.
1.61, and support arms 64.63, which are rotatably supported horizontally by rubber rollers 62 and 61, and support arms 64. Swinging arms 65, 65 are swingably erected at the front ends of the winding rods 64, 64, and winding rods 66, 66 are horizontally suspended in recesses at the tips of these arms via bearings.
At the lower part of each support arm 64, 64 the machine base 10
The tension rods 67 and 67 are supported in a swingable manner at both ends, and the tips are connected to the swing arms 65 and 65.
An intermediate support rod 68.6 which connects the intermediate portion of the coil springs 67a, 67a via turnbuckle links 65a, 65a and extends from the rear of the machine base 10.
It consists of 8. On the support arm 64.64, there is a guide 69a for guiding the winding roll of the tape t.
Square rods 69 and 69 are horizontally fixed so that they can be relocated.

The driving means 70 includes an inverter motor 71 erected at the left end of one unit 1o, an output boolean 1a provided at the upper end of the motor 71, and a pulley 32 fixed to the left support shaft of the roll 30. timing belt 7 stretched between
2, a timing belt 73 stretched between the pulley 33 and the pulley 63a of the left support shaft of the lower rubber roller 63;
A timing belt 73 is stretched between the pulley 33 fixed to the left support shaft adjacent to the pulley 32 and the pulley 63a of the left support shaft of the lower rubber roller 63, and a timing belt 73 is also attached to the pulley 34 and the left support of the upper rubber roller 62. It consists of a timing belt 74 stretched between a pulley 62a on the shaft.

The control means 80 includes a control box 81 provided at the upper front end of the machine base 10, a power switch 82 provided in the box, a volume switch 83 for changing the input voltage of the inverter motor 71 and setting the rotation speed, and the above-mentioned electrical Preheating switch 84 that preheats the resistance rod heater 43a
, a cutting start switch 85, a varitax volume 86 that adjusts the temperature of each heater 43a, and a solenoid valve that supplies compressed air to the air cylinder 47 of each cutting means 40 and rotates the round blade 41 to the cutting position. A switch 88 for selectively operating 87 depending on the tape width;
Solenoid valve 87... and air cylinder 47...

It is composed of an electric pipe system etc. that supplies compressed air to 55.

Next, the operation of the heat cutting machine 1 of this embodiment will be outlined. First, a raw fabric roll made of a woven fabric T made of chemical fibers such as nylon is attached to the raw fabric roll support rod 22, and the woven fabric is passed through the path shown by the dashed line in FIG. 2, and its tip is cut to approximately the width of the tape. Attach to winding rod 66.66. At this time, the air cylinder 47 is not supplied with compressed air, so the round blade 41 is away from the roll 30, and the air cylinder 55 is supplied with compressed air from below, so the press rubber roller 36 is moved upward. being lifted up. While setting the original fabric, a preheating switch 84 is turned on to preheat the heater 43a. For the nylon woven fabric, the temperature is adjusted to 300° C. using the Varitax volume 86 corresponding to each heater.

At the same time, the cutting means 40 to be used and the spacing thereof are adjusted and set by moving the support base 46 according to the width of the tape to be cut and the number of tapes to be cut. When obtaining a thin tape width, use support square rod 1.
Abutments 46 can be arranged alternately above and below 0a.

The feeding speed is set to around 45 m/min using the volume switch 83. When the heater temperature reaches a predetermined temperature and the above-mentioned settings are completed, the round blade 41, which was scheduled to be used in advance, is moved to the air cylinder 4 by operating the switch 88.
5 and press it against the roll 30 so as to take the cutting position.

The cutting start switch 85 is turned on, the motor 71 is activated, the roll 3o and the take-up rollers 63, 63 are rotated in the directions of the respective arrows, and the cutting operation is started. The feeding speed or Varitax volume is adjusted depending on the welding state of the cut edge of the tape. When the cutting of the predetermined length or the entire original fabric is completed, the cutting start switch 85 is turned off to finish the cutting work.

(Effects of the Invention) As described above, according to the round blade holding device 42 of the heat cutting machine of the present invention, the contact point P□ of the round blade 41 with respect to the support surface 30a of the IR cloth T forms a triangle, and At least two blades arranged so as to encompass the center point of the round blade 41 therein.
The round blade 41 is held on the support frame 44 by the two guide bodies 47, 47, and furthermore, the biasing means 45 allows the outer f! Since the R edge is stably biased against the support surface 30a, even the round blade 41 heated to a considerably high temperature by the heating means 43 can be heated by the guide body 47, 47 for a long time as the support surface 30a moves. It is possible to stably roll the heat cutting machine 1 without burning or photographing, and it is possible to improve the operating rate of the heat cutting machine 1 and to greatly improve productivity.

[Brief explanation of the drawing]

Fig. 1 is a front view of an embodiment of the heat cutting machine according to the present invention, Fig. 2 is a right side view of the same embodiment, and Fig. 3 is a right side view of the round blade holding device of the heat cutting machine of the present invention. , 41st! ! is a front view of the same device. (Explanation of symbols) 1... Heat cut machine, 30a... Support surface, 41...
... Round blade, 42... Round blade holding device, 43... Heating means, 44... Support frame, 45... Biasing means, 47...
- Guide body, T...long chemical fiber woven cloth, T...tape, P□...contact point. One or more applicants Kindai Co., Ltd. Agent Patent attorney (6235) Hidehiko Matsuno Figure 2

Claims (1)

[Claims] 1. A long chemical fiber woven cloth (
A device (42) for holding a rolling round blade (41) of a heat cutting machine (1) for heat cutting T) into a tape (t) on a support surface (30a) moving in the running direction, The round blade (41) is attached to the support frame (44) and the round blade (41).
) and a heating means (45) that biases the round blade (41) toward the support surface (30a) via guide bodies (47) that roll into contact with the outer peripheral edge of the blade (47). Means (43)
and the at least two guide bodies (47), (
47) and the support frame (4) so as to form a triangle with the contact point (P_1) of the round blade (41) against the support surface (30a), and to include the center point of the round blade (41) within the triangle.
4) A round blade holding device for a heat cutting machine, characterized in that it is arranged in the above. 2. The device according to claim 1, wherein the guide body (47) is composed of two ball bearings and a spacer, and is rotatably supported on the support frame (44).