TW201943523A - Belt cutting jig and belt jointing device - Google Patents

Abstract

Provided is a belt cutting tool which is used in a belt joining device, the belt cutting tool comprising: a retaining body that abuts a first belt end and a second belt end to each other and retains the two ends; and a pressurizing body that pressurizes the two ends in a belt thickness direction. The retaining body includes: a lower mold, on the top surface of which the first belt end and the second belt end are placed; an upper mold that is disposed on the top surface of the first belt end and that of the second belt end; a belt clamp; at least one clamp main body to which the belt clamp is detachably fixed with the first belt end or the second belt end interposed therebetween; and a heater that heats the first belt end and the second belt end. The lower mold has a joining protrusion, and the clamp main body has a hole for receiving the joining protrusion. The belt cutting tool further comprises: a belt cutting base that has a cutting protrusion which is inserted into the hole of the clamp main body, and that is detachably connected to the clamp main body; and a cutter blade that cuts a belt which is placed on the belt cutting base.

Description

Belt cutting jig and belt joining device

The present invention relates to a belt cutting jig and a belt engaging device.

Seamless belts are conveyor belts used in transport devices such as financial terminal devices, automatic ticket cutters, and ticket machines. This seamless belt has a belt made of, for example, a reinforcing material such as a fiber material (for example, woven cloth) and a thermosetting resin such as rubber (for example, Patent Document 1).
[Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open No. 2016-038010

When replacing, for example, the seamless belt of the conveying device used in the automatic ticket cutting machine, the conveying device must be temporarily removed from the automatic ticket cutting machine. After the belt is replaced, the conveying device is installed to the automatic ticket cutting machine again, so unnecessary operation time is required , Homework becomes complicated. In the state where the seamless belt is cut into a belt shape, the belt replacement operation can be simplified if the seamless belt can be returned to the seamless device after installation.

An object of the present invention is to provide a belt cutting jig and a belt joining device for attaching a belt-shaped belt to a conveying device to be a seamless belt joining device, which can cut a seamless belt and easily form a joint. .

The belt cutting jig of the present invention is a belt cutting jig, which is used in a belt joining device, and includes: a first belt end portion; a holding body, which is abutted against both ends of the second belt end portion; and a pressure body, The two ends are pressurized in the direction of the belt thickness. The holding system includes a lower mold, the first belt end portion and the second belt end portion are placed on the upper surface, and the upper mold is placed on the first belt end. And the upper surface of the second belt end portion; a belt clamp; at least one clamp body that holds the first belt end portion or the second belt end portion therebetween, and the belt clamp is detachably mounted. And a heater to heat the first belt end portion and the second belt end portion; the lower die system has a convex portion for joining, and the clamp system has a hole for receiving the convex portion for engagement, which is characterized in that The belt cutting base includes at least one cutting convex portion inserted into the hole of the clamp body, and is detachably connected to the clamp body; and a blade is placed on the belt cutting base. Leather band.

The belt engaging device of the present invention includes the belt cutting jig described above.
[Inventive effect]

According to the present invention, by including a belt cutting base which is detachably connected to the clamp body used in the belt engaging device, it is possible to accurately perform the connection between the first and second belt end portions. Positioning, so the seamless belt can be cut to make the joint easier.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

1. First Embodiment (Overall Structure)
The belt cutting jig 10A shown in FIG. 1 includes: a blade 14A to cut the belt 12; a belt cutting base 16A to place the belt 12; and a clamp 18A to fix the belt 12 to the belt cutting base 16A. In this figure, the X direction is taken as the belt travel direction, the Y direction is taken as the belt width direction, and the Z direction is taken as the belt thickness direction. Furthermore, in this patent specification, the "direction" is not limited to the case where there is only one direction, but also includes the case where a direction opposite to the above-mentioned one direction is added.

The belt 12 is a flat belt whose surface is flat and not yet seamless. The belt 12 is made of a thermoplastic resin such as a polyurethane elastomer, a polyamide elastomer, a polyester elastomer, a polyvinyl chloride-based elastomer, a polyolefin-based elastomer, or the like.

The blade 14A cuts the belt 12 placed on the belt cutting base 16A by punching. The plan view shape of the blade 14A is V-shaped in this embodiment. However, the present invention is not limited to this. For example, it may be linear, W-shaped, comb-shaped, wave-shaped, or arrow-shaped. Desired shape.

The blade 14A is held by the blade holder 22A. The structure composed of the blade 14A and the blade holder 22A is referred to as a cutter 23A. The position of the blade 14A in the blade holder 22A is preferably centered. The blade holder 22A is a polyhedron, and the tip of the blade 14A protrudes from one surface. The blade holder 22A in this figure is rectangular in plan view, and the corner portion is subjected to R-corner processing. The protruding surface of the tip of the blade 14A is the lower surface of the blade holder 22A. The lower surface of the blade holder 22A provided with the blade 14A is referred to as a belt facing surface 31. The blade holder 22A is formed of, for example, resin. In this example, the blade holder 22A is formed at the front end thereof, and is formed of a transparent resin that can see through. FIG. 1 shows the blade 14A of the see-through blade holder 22A.

As shown in FIG. 2, in this embodiment, the blade holder 22A has a convex shape protruding from the belt facing surface 31. The belt facing surface 31 includes a base surface 41 protruding in the center, and an escape surface 42 provided on both sides of the base surface 41 in the belt width direction. The blade 14A is fixed to the base surface 41. The escape surface 42 is a height from the upper surface of the blade holder 22A, and is much lower than the base surface 41.

As shown in FIG. 3, the belt cutting base 16A includes a body portion 25 having a belt placement surface 24 on which the belt 12 is placed, and a support portion 26A provided on the body portion 25 and supporting the blade holder 22A. The belt cutting base 16A is rectangular in plan view. The belt cutting base 16A is preferably made of resin so as not to be damaged by contact with the blade 14A. The length LX1 of the belt traveling direction of the belt cutting base 16A is preferably the same as the length of the belt traveling direction of the lower mold of the belt engaging device described later. The same length is only required to be roughly the same length, as long as it is the same length to the extent that there is no gap or overlap between the butted belt ends when the belt 12 is engaged.

The body portion 25 is a rectangular plate, and the belt placement surface 24 facing the belt facing surface 31 is the upper surface. In this embodiment, a groove 27 is formed on the belt placement surface 24 to receive the tip of the blade 14A when the belt 12 is cut. The plan view shape of the groove 27 is considered to be the same as the plan view shape of the blade 14A, and is V-shaped in this embodiment. In this example, two grooves 27 are provided on the belt placement surface 24. The V-shaped apex angles of the grooves 27 are arranged side by side in the belt traveling direction, and are opposite to each other. Further, the groove 27 may not be formed on the belt placement surface 24.

The support portion 26A includes a belt restricting portion 28 that restricts the position in the belt width direction, and a holder restricting portion 29A that restricts the movement of the blade 14A. In the present embodiment, the clamping grooves 27 are provided with a pair of belt restricting portions 28 and a pair of retainer restricting portions 29A.

The belt restricting portion 28 is a wall-shaped member provided on the belt placing surface 24. The side surface of the belt restricting portion 28 extends parallel to the belt traveling direction. The width between the side surfaces of the pair of belt restricting portions 28 is formed in accordance with the width of the belt 12. Therefore, the belt 12 placed on the belt placement surface 24 is in contact with the side surfaces of the pair of belt restricting portions 28, and the movement in the belt width direction is restricted. The upper surface of the belt restricting portion 28 is not in contact with the belt facing surface 31. A cutout 30 is provided on the side of the belt restricting portion 28 so that the end of the blade 14A can escape when the belt 12 is cut. The plan view shape of the cutout 30 is a semicircular shape in this figure, but the present invention is not limited to this, and it may also be rectangular or polygonal. In the present embodiment, two pairs of notches 30 are provided to sandwich the belt placement surface 24 and face each other.

The holder restricting portion 29A is in contact with a side surface forming a corner of the blade holder 22A. In the present embodiment, the holder restricting portion 29A is a plate-like member that sandwiches the belt placement surface 24 so as to be erected on one of the two sides. The retainer restricting portion 29A is more outward than the belt restricting portion 28, and it projects upward from the upper surface of the belt restricting portion 28. Both ends of the belt traveling direction of the holder restricting portion 29A protrude toward the belt placement surface 24. The side surfaces forming the corners of the blade holder 22A are in contact with the holder restricting portion 29A, whereby the movement system of the blade 14A in the belt traveling direction and the belt width direction is restricted.

As shown in FIG. 4, a cutting convex portion 50 is provided on the lower surface of the main body portion 25. The cutting convex portion 50 is provided at the center in the belt width direction of the main body portion 25, and the tip end protrudes in the belt traveling direction. The cutting convex portion 50 is integrated with the main body portion 25. The cutting convex portion 50 is provided only on one side of the belt traveling direction of the main body portion 25.

The clamp 18A is detachably fixed to a first belt end portion 12a (FIG. 3) serving as one end of the belt 12. Although illustration and description are omitted, another clamp 18A is detachably fixed to the second belt end portion which is the other end of the belt 12. The clamp 18A includes a clamp body 32A and a belt clamp 34. The first belt end portion 12a is a portion deviating from the center of the belt 12, and it is an area having a certain length in the direction of travel of the belt from the beginning of one end. Similarly, the end portion of the second belt is a portion deviating from the center of the belt 12, and it is an area having a certain length in the direction of travel of the belt as the terminal portion of the other end.

The clamp body 32A is a rectangular plate, which has a groove 36 provided at the center of the upper surface 35 and a female screw 37 provided at both sides of the groove 36. The groove 36 is parallel to the belt positioning direction. The width of the groove 36 is formed in accordance with the width of the belt 12. The clamp body 32A is arranged longitudinally parallel to the belt width direction and transversely parallel to the belt travel direction. The groove 36 is formed parallel to the lateral direction of the clamp body 32A.

As shown in FIG. 5, the clamp body 32A is provided with a plate portion 46 with a hole 45 formed therein, and a blocking protrusion 47 formed on the upper surface 46 a of the plate portion 46 and a portion of the hole 45. The plate portion 46 is integrated with the clamp body 32A. The plate portion 46 protrudes from the long side of one side of the clamp body 32A, and the upper surface is formed at a position much lower than the upper surface of the clamp body 32A. The hole 45 penetrates the thickness direction of the plate portion 46. The hole 45 has a size and a shape corresponding to the convex portion 50 for cutting. The blocking protrusion 47 projects toward the hole 45. The closing protrusion 47 closes a part of the opening of the hole 45 and the side far from the tip of the plate portion 46. The surface 48 of the blocking protrusion 47 is inclined from the lower end to the upper end toward the radial outer side of the hole 45.

The belt clamp 34 (FIG. 3) is a rectangular plate material, in which a hole 39 and a notch hole 40 are formed, into which a lower screw 39 of the clamp screw 38 is inserted. The notch hole 40 is a side surface side of the belt clamp 34 cut away. The clamp screw 38 can be inserted into the notch hole 40 from the width direction of the belt clamp 34. The belt clamp 34 is locked between the surface of the clamp body 32A and the first belt end portion 12 a serving as one end of the belt 12, and the clamp screw 38 inserted into the lower hole 39 and the notch hole 40 is locked. The female screw 37 is thereby fixed to the clamp body 32A.

(How to use the belt cutting jig)
Next, a method for cutting a belt using the belt cutting jig 10A of this embodiment will be described. As shown in FIG. 6, beforehand, the first belt end portion 12 a is marked 56. The characterization 56 is a mark indicating a cutting position for obtaining a seamless belt having a predetermined circumference. The second belt end (not shown) is also drawn in advance. Next, the belt clamp 34 is temporarily fixed to the clamp body 32A. That is, the clamp screw 38 is inserted into the lower hole 39 (not shown), and the female screw 37 locked into the clamp screw 38 to one side of the clamp body 32A is temporarily fixed in advance. The female screw 37 on the other side is locked with the clamp screw 38 in a state where the belt clamp 34 is not inserted, and temporarily fixed in advance.

Next, the upper surface 46 a of the plate portion 46 is arranged to the lower surface side of the belt cutting base 16A so that the tip of the cutting projection 50 is inserted into the lower side of the occlusion protrusion 47 from the hole 45. The surface 48 of the occlusion projection 47 is inclined, whereby the tip of the cutting protrusion 50 reaches the depth of the lower side of the occlusion projection 47. Next, using the tip of the blocking protrusion 47 as a fulcrum, the clamp body 32A is rotated to contact the upper surface 46a of the plate portion 46 to the lower surface of the belt cutting base 16A. As described above, the cutting protrusion 50 is inserted into the hole 45 to integrate the clamp body 32A and the belt cutting base 16A. The contact portion between the closing protrusion 47 and the cutting convex portion 50 is arranged below the first belt end portion 12a.

Next, the first belt end portion 12a is arranged to the groove 36 of the clamp body 32A, and the engraving 56 of the first belt end portion 12a and the edge 57 of the notch 30 are aligned, so that the first belt end portion 12a is borrowed by the belt clamp 34 and The clamp screw 38 is fixed to the clamp body 32A (FIG. 7). The edge 57 of the notch 30 functions as an alignment portion for matching the position of the cutting belt 12. The belt 12 has a pair of belt restricting portions 28, and its movement in the belt width direction is restricted.

As shown in FIG. 8A and FIG. 8B, the blade 14A is set to the belt cutting base 16A, and the blade 14A is pressed against the first belt end portion 12a, and the first belt end portion 12a is cut. That is, the cutter 23A is set to the belt cutting base 16A, and the upper surface of the blade holder 22A is pressed into the blade 23A, thereby pressing the blade 14A to the first belt end portion 12a. The blade holder 22A is a holder restricting portion 29A, and its movement in the belt traveling direction and the belt width direction is restricted. That is, while the side surface of the blade holder 22A contacts the holder restriction portion 29A, the tool 23A is lowered. Therefore, the cutting position of the blade 14A is not shifted, and the first belt end portion 12a can be easily cut. In this example, a convex first engaging portion 52A is formed at the beginning of the first belt end portion 12a (FIG. 9).

As shown in FIG. 10, a concave second engaging portion 54A is formed at the terminal portion of the second belt end portion 12b which is the other end of the belt 12. In the case of forming the second joint portion 54A, another clamp 18A is used to fix the second belt end portion 12b to the belt cutting base 16A, and the cutting is performed by reversing the direction of the V-shaped apex of the blade 14A. The other procedures are the same as those of the first belt end portion 12a, and therefore descriptions thereof are omitted.

(How to use the belt joint device)
As shown in FIG. 11, in a state where the clamp 18A is fixed to the first belt end portion 12a and the second belt end portion 12b, the belt joint device 60 is used to join the first joint portion 52A and the second joint portion 54A.

The belt engaging device 60 includes a holding body 62 and a pressurizing body 64. The holding body 62 and the pressing body 64 are formed of a metal such as iron, aluminum, stainless steel, or a resin having heat resistance. The holding body 62 abuts the first belt end portion 12 a and the second belt end portion 12 b of the belt 12 to hold them. The pressure body 64 presses the first belt end portion 12a and the second belt end portion 12b in the belt thickness direction. In the belt engaging device 60, a clamp 18A is used to fix the belt 12 to the holding body 62.

As shown in FIG. 12, the holding body 62 includes an upper die 66, a lower die 68, and two clamps 18A that are detachably integrated with the lower die 68. Since the clamp 18A is as described above, its description is omitted. The upper die 66 is arranged on the upper surfaces of the first joint portion 52A and the second joint portion 54A after the butt joint. The upper die 66 has a heater built in, and is connected to the connector 70 through wiring. The heater can be an electric heater or a ceramic heater. In addition, as the heater, a PTC (Positive Temperature Coefficient) heater can be used, thereby making it easier to control the temperature. The length LX2 of the belt traveling direction of the lower die 68 is formed in accordance with the length LX1 (FIG. 3) of the belt positioning direction of the belt cutting seat 16A.

The lower die 68 has a guide groove 72. The guide groove 72 is a groove formed on the upper surface of the lower die 68 and formed in the belt traveling direction, and supports the first joint portion 52A and the second joint portion 54A that are butted from below. The width and depth of the guide groove 72 are formed in accordance with the width and thickness of the engaged belt 12. The width of the guide groove 72 is preferably larger than the width of the upper die 66 so that no gap is generated between the upper die 66 and the guide groove 72.

The lower surface of the lower die 68 is provided with two engaging projections 76. The engaging projections 76 are respectively provided in the center of both side portions crossing in the belt traveling direction. The tip of the engaging projection 76 projects in the belt traveling direction. The engaging projection 76 corresponds to the hole 45 of the clamp 18A, and has the same size and shape as the cutting projection 50. The engaging convex portion 76 is inserted into the hole 45 from the upper surface 46 a side of the plate portion 46 so as to be in contact with the closing protrusion 47. Thereby, the clamp 18A and the lower mold 68 are connected. In the belt joining device 60, a belt-drawing mechanism is formed by the engagement convex portion 76 of the lower die 68 and the hole 45 of the plate portion 46.

The pressure body 64 includes a frame portion 78 and a pressure screw 80. The frame portion 78 is C-shaped in cross section, and has a plate-shaped upper end portion and a lower end divided into two branches. The frame portion 78 clamps the lower mold 68 so that the lower end portion is disposed on the lower surface of the lower mold 68 and the upper end portion is disposed on the upper surface of the lower mold 68. In the approximate center of the upper end portion, a female screw 82 that locks into the pressure screw 80 is formed. The frame portion 78 is pressed against the upper die 66 to the lower die 68 by the pressing screw 80 locked into the female thread 82 while the lower die 68 is clamped up and down.

A belt joining method using the belt joining device 60 will be described. First, the upper surface 46a of the plate portion 46 is disposed to the lower surface side of the lower die 68, and the tip of the engaging convex portion 76 is inserted from the hole 45 to the lower side of the closing protrusion 47 (FIG. 13). The surface 48 of the occlusion projection 47 is inclined, whereby the tip of the engagement projection 76 reaches the depth below the occlusion projection 47.

Next, using the tip of the blocking protrusion 47 as a fulcrum, the clamp body 32A is rotated to contact the upper surface 46 a of the plate portion 46 directly below the lower die 68 (FIG. 14). As described above, the engaging protrusion 76 is inserted into the hole 45 to integrate the clamp body 32A and the lower die 68. The contact portion between the closing protrusion 47 and the engaging convex portion 76 is disposed below the first belt end portion 12a.

When the force T in the stretching direction acts on the first belt end portion 12a, a moment M in the counterclockwise direction acts on the contact portion between the closing protrusion 47 and the engaging projection 76. Using the occlusion protrusion 47 as a fulcrum, the upper surface of the plate portion 46 is pressed against the lower surface of the lower mold 68, and the engaging convex portion 76 is engaged with the hole 45, as long as the force T acts on the first belt end portion 12a, Then, the lower mold 68 and the clamp body 32A are maintained in an integrated state.

Although illustration and description are omitted, the second belt end portion 12b is similarly fixed to the lower mold 68 using another clamp 18A. The tension clamp body 32A is directed toward the lower die 68 and integrated with the lower die 68, whereby the first belt end portion and the second belt end portion are maintained in a docked state. In the second belt end portion side, the force in the direction of pressing against each other by the tension acting on the belt is applied to the contact portion between the closing protrusion 47 and the engaging projection 76 to hold the lower die 68 and the clamp body 32A. Into a state of integration.

Next, the upper die 66 is arranged so as to cover the first joining portion 52A and the second joining portion 54A from above. The frame part 78 is arrange | positioned so that the holding body 62 may be clamped up and down. In this case, the upper end portion of the frame portion 78 is disposed above the upper mold 66, and the lower end portion of the frame portion 78 is disposed on both longitudinal sides of the lower mold 68. By locking the pressure screw 80, the first joint portion 52A and the second joint portion 54A are pressed through the upper die 66 in the belt thickness direction.

In this state, the heater built in the upper die 66 is energized through the connector 70 to heat the first joint portion 52A and the second joint portion 54A for a predetermined time. The heated first joint portion 52A and the second joint portion 54A are melted. After a predetermined time has elapsed, the application of electricity to the heater is stopped, and the molten portion is cooled, whereby the first joint portion 52A and the second joint portion 54A are solidified to form a welded portion. After cooling, the pressure screw 80 is loosened, and the frame portion 78 is removed from the holding body 62. Then, by loosening the clamp screw 38 and removing the belt clamp 34 from the clamp body 32A, the clamp 18A is removed from the first belt end portion 12a and the second belt end portion 12b. In this way, the first joining portion 52A and the second joining portion 54A can be joined, and the belt 12 is seamless.

(Function and effect)
The belt cutting jig 10A of the present embodiment includes a belt cutting base 16A detachably connected to the clamp body 32A, whereby the clamp body 32A can be removed from the belt cutting base 16A to be connected to the lower mold. 68. The length LX1 of the belt cutting direction of the belt cutting seat 16A is the same as the length LX2 of the belt 68 of the lower mold 68. Therefore, when the belt is engaged, the length of the first belt end portion 12a and the second belt end portion 12b that are butted to each other There is no gap or overlap between the two ends. Therefore, when the belt cutting jig 10A is positioned to align the first belt end portion 12a and the second belt end portion 12b, it is possible to cut the seamless belt to form a joint easily without taking time.

The belt cutting jig 10A is the same as the length LX1 and LX2 of the belt cutting direction of the belt cutting seat 16A and the lower mold 68, and the overall is smaller. Therefore, the belt cutting operation can be performed in the conveying device. The belt cutting jig 10A allows the clamp 18A fixed to the belt 12 to be replaced from the belt cutting base 16A to the lower die 68. Therefore, the cutting operation can be followed by the joining operation.

Since the cutting shape of the belt cutting jig 10A is V-shaped, compared with the case of a simple right-angle cutting shape, the portion where the joint area increases increases the durability of the joint portion. Therefore, the life of the belt 12 used in the carrying device can be extended.

Compared with commercially available cutting jigs, the belt cutting jig 10A has a smaller number of parts, and therefore can be manufactured cheaper.

2. Second Embodiment Next, a second embodiment of the present invention will be described. Refer to the following figure for explanation. In addition, the same structures as those in the first embodiment are given the same reference numerals, and descriptions thereof are omitted. The belt cutting jig 10B shown in FIG. 15 includes a cutter 23B, a belt cutting base 16B, and a clamp 18A.

The cutter 23B includes a blade 14B and a blade holder 22B. The blade holder 22B is rectangular in plan view and has a belt-opposing surface 31 on the lower surface. The blade holder 22B is formed on both sides in the belt width direction of the belt facing surface 31, and has a protective protrusion 43A. The belt facing surface 31 has: a base surface 41 formed at the center and protruding; an escape surface 42 which is much lower than the base surfaces 41 provided on both sides of the belt width direction of the base surface 41; and a protection protrusion 43A The surface is provided outside the escape surface 42.

The blade 14B is fixed to the base surface 41. The blade 14B is a shape seen from a direction perpendicular to the belt facing surface 31 and is formed to be point-symmetrical with respect to the center C of the belt facing surface 31. The center C of the belt facing surface 31 refers to the center of the figure having the outline of the belt facing surface 31 seen from a direction perpendicular to the belt facing surface 31. As shown in FIG. 16, the tip of the blade 14B is viewed from a direction perpendicular to the base surface 41. In the belt width direction, the shape of a V-shaped mountain and valley are connected alternately. In the full width of the surface 41, the number of mountains is 1.5. The tip of the blade 14B shown in FIG. 16 is a mountain on the left side of the base surface 41 and a valley on the right side. The blade 14B is point-symmetrical with respect to the center C of the belt facing surface 31.

The protection protrusion 43A is viewed from a direction perpendicular to the belt facing surface 31. The length in the belt traveling direction is greater than the length in the belt width direction, and has an oblong profile. As shown in FIG. 17, the protective protrusions 43A are respectively provided with the blade 14B as the center, and are closer to the outer side in the belt width direction than the escape surface 42. The protection protrusion 43A is a height from the upper surface of the blade holder 22B, and is higher than the blade 14B. That is, the tip of the protection protrusion 43A protrudes from the lower end of the figure than the tip of the blade 14B. For example, when the tool 23B is placed on the surface of a certain abutment, the tip of the protection protrusion 43A is in contact with the surface, and the tip of the blade 14B is not in contact with the surface. Therefore, the protection protrusion 43A protects the blade 14B and prevents the blade 14B from damaging the surface.

As shown in FIG. 18, the belt cutting base 16B includes a main body portion 25 and a support portion 26B. The support portion 26B includes a belt restricting portion 28 that restricts the position in the belt width direction, and a holder restricting portion 29B that restricts the movement of the blade 14B.

The holder restricting portion 29B is a plate-shaped member that is sandwiched between the belt placing surface 24 and stands on one of the two sides in the belt width direction. A receiving recess 49A is formed between the plate-like member and the belt restricting portion 28. The receiving recess 49A is a hole for receiving the protection protrusion 43A. Viewed from a direction perpendicular to the belt placement surface 24, the receiving recess 49A has an oblong profile. The depth of the receiving recess 49A is that when the cutter 23B is set to the belt cutting seat 16B, the tip of the blade 14B will reach the depth of the belt placing surface 24 before the protection protrusion 43A reaches the bottom surface of the receiving recess 49A.

Next, a method for cutting a belt using the belt cutting jig 10B of the second embodiment will be described. First, by following the same procedure shown in Figs. 6 and 7 of (the method of using the belt cutting jig) of the first embodiment described above, the first belt end portion 12a is fixed to the clamp integrated with the belt cutting base 16B. 18A (Figure 19).

Next, the belt cutting seat 16B is set to the cutter 23B, and the protection protrusion 43A is inserted into the receiving recess 49A. Next, the upper surface of the blade holder 22B is pushed in, pressed against the blade 14B to the first belt end portion 12a, and the first belt end portion 12a is cut. In this way, the first joint portion 52B having the number of 1.5 mountains as shown in FIG. 20A is formed.

Next, the belt cutting base 16B is removed from the clamp 18A, and the other clamp 18A fixing the second belt end portion 12b is integrated with the belt cutting base 16B (FIG. 21). Next, the belt cutting base 16B to the cutter 23B are set, and the second belt end portion 12b is cut in the same manner as in the case of the first belt end portion 12a. In this way, the second joint portion 54B having the number of 1.5 mountains as shown in FIG. 20B is formed.

The number of blades 14B is 1.5. Therefore, regardless of the direction of the cutter 23B relative to the belt cutting base 16B, the first joint 52B and the second joint shown in Figs. 20A and 20B can be formed. Section 54B. That is, the blade 14B is formed to be point-symmetrical. Therefore, when the cutter 23B rotates 180 degrees with the axis parallel to the thickness direction as a center to set to the belt cutting base 16B, it overlaps with the shape before the rotation. Therefore, when the second joint portion 54B is formed, the cutter 23B does not need to be rotated 180 degrees relative to the belt cutting base 16B, and even if it is rotated 180 degrees, the first joint portion can be formed as shown in FIG. 20B The second joint portion 54B joined at 52B.

In the case of the first embodiment described above, after the first joint portion 52A is formed, when the second joint portion 54A is formed, a second joint portion 54A having the same convex shape as the first joint portion 52A may be formed, which may occur. Cut error. This will be specifically described below. As for the belt cutting seat 16A, the cutting protrusion 50 is one. Therefore, when forming the second joint portion 54A, it is necessary to remove one of the clips from the belt cutting seat 16A forming the first joint portion 52A. The clamp 18A integrates the clamp 18A of the other to which the second belt end portion 12b is fixed with the belt cutting base 16A. At this time, when the second belt end portion 12b is cut without changing the direction of the cutter 23A with respect to the belt cutting base 16A, the second joint portion 54A has the same convex shape as the first joint portion 52A. In order to prevent such a cutting error, in the case of the first embodiment described above, after forming the first joint portion 52A, it is necessary to consciously rotate the cutter 23A 180 degrees relative to the belt cutting seat 16A, and consciously Match the direction of the V-shaped vertex of the blade 14A.

When the belt cutting jig 10B according to the second embodiment is used, the blades 14B are point-symmetrical. Therefore, even if the cutter 23B faces the belt cutting base 16B, it is possible to form a first joint 52B that can be joined and The second joint portion 54B. Therefore, when the first cutting portion 52B and the second bonding portion 54B are sequentially formed in the belt cutting jig 10B, it is possible to surely prevent the belt cutting error caused by the different directions of the blades 14B.

As shown in FIG. 22, the protection protrusion 43A inserted into the receiving recess 49A is in contact with the retainer restricting portion 29B on the surface that is longer in the belt thickness direction than the first embodiment described above. , The movement in the belt travel direction and belt width direction is more reliably restricted. Therefore, the belt cutting jig 10B can prevent the cutting position from shifting, and can cut the belt 12 more stably.

Although the case where the number of hills of the blade 14B series of this embodiment is 1.5 has been described, the present invention is not limited to this, and the number of hills may be (n + 0.5) (n is an integer). When the shape of the blade 14B is a point-symmetric cutting shape, various shapes can be selected. For example, the shape of the blade 14B may be an oblique line shape that can obtain a joint portion that obliquely crosses the shape of the belt. In this case, the number of blades is 0.5.

3. Third Embodiment Next, a third embodiment of the present invention will be described. The belt cutting jig of this embodiment is viewed from a direction perpendicular to the belt facing surface 31. When the blade holder has a non-point symmetrical shape, the holder restricting portion is only when the blade holder is oriented in a specific direction. The point where it can withstand and the point where the clamp can be integrated only at a specific position of the belt cutting seat are different from the above-mentioned first and second embodiments. Hereinafter, description will be made with reference to the drawings. In addition, the same structures as those in the first embodiment are given the same reference numerals, and descriptions thereof are omitted. The belt cutting jig 10C shown in FIG. 23 includes a cutter 23C, a belt cutting base 16C, and a first clamp 18B and a second clamp 18C serving as clamps.

As shown in FIG. 24, the tool 23C includes a blade 14A and a blade holder 22C. The blade 14A is the same as the first embodiment. The blade holder 22C is viewed from a direction perpendicular to the belt facing surface 31 and has a trapezoidal profile. That is, among the four sides constituting the outline of the blade holder 22C, the lengths of one pair of sides parallel to the belt width direction are different from each other. The blade holder 22C has a long side 61 in the upper part and a short side 63 in the lower part.

The protection protrusion 43B is inclined from the long side 61 to the short side 63. The included angle α1 between the imaginary lines L1 and L3 that are in contact with the sides of the protection protrusion 43B and the imaginary line L2 that is in contact with the long side 61 of the blade holder 22C is less than 90 degrees. The included angle β1 between the imaginary lines L1 and L3 and the imaginary line L4 connected to the short side 63 of the blade holder 22C is greater than 90 degrees.

A certain point on the outline of the blade holder 22C near the intersection of the imaginary lines L1 and L2 is taken as the characteristic point P1. A point on the outline of the blade holder 22C holding the center C of the blade holder 22C and the direction matching the characteristic point P1 is regarded as the characteristic point P2. The distance D1 from the feature point P1 to the center C is different from the distance D2 from the feature point P2 to the center C.

As shown in FIG. 25, the belt cutting base 16C includes a main body portion 25 and a support portion 26B. The support portion 26B includes a belt restricting portion 28 that restricts the position in the belt width direction, and a holder restricting portion 29B that restricts the movement of the blade 14A.

The holder restricting portion 29B is formed so as to fully fit the sides and corners of the blade holder 22C. The receiving recess 49B is formed as a fitting protection protrusion 43B. The receiving recessed portion 49B is formed to be inclined corresponding to the protection protrusion 43B. That is, among the four sides constituting the contour of the belt cutting seat 16C, the receiving recessed portion 49B is from one side (the upper side in this case) to the other side parallel to the width direction of the belt (the upper side in the case in this figure) The lower side) 67 floor, inclined to the inside.

The imaginary lines L5 and L6 that are in contact with the sides of the receiving recessed portion 49B are the same as α1 between the imaginary lines L5 and L6 and the side 65 of the belt cutting base 16C. The included angle β2 between the imaginary lines L5 and L6 and the side 67 of the belt cutting base 16C is the same as β1. Moreover, the so-called "same" is not limited to exactly the same situation, it also includes several different situations.

The receiving recess 49B has an inner surface that is shaped along the protective protrusion 43B. That is, the receiving recessed portion 49B is on the inner surface thereof and has characteristic points P3 and P4 corresponding to the above-mentioned characteristic points P1 and P2. The inner surface including the feature point P3 and the inner surface including the feature point P4 correspond to the restriction surfaces, respectively.

The direction of the cutter 23C is determined in one direction with respect to the belt cutting base 16C. That is, the protection can be inserted only when the long side 61 of the cutter 23C is disposed on the side 65 side of one side of the belt cutting base 16C, and the short side 63 is disposed on the side 67 side of the other side of the belt cutting base 16C. The protrusion 43B reaches the receiving recess 49B (FIG. 25). At this time, the inner surface including the feature point P3 is in contact with the surface of the blade holder 22C including the feature point P1, and the inner surface including the feature point P4 is in contact with the surface of the blade holder 22C including the feature point P2.

In addition, when the long side 61 of the cutter 23C is arranged on the 67 side of the other side of the belt cutting base 16C, and the short side 63 is arranged on the side 65 of one of the belt cutting bases 16C, the protection cannot be inserted. The protrusion 43B reaches the receiving recess 49B. That is, the positions of the feature points P1 and P4 and the positions of the feature points P2 and P3 are offset, so the tool 23C cannot be inserted into the belt cutting seat 16C.

As shown in FIG. 26, a first cutting convex portion 51 and a second cutting convex portion 53 are provided on the bottom surface of the belt cutting seat 16C. The first cutting protrusion 51 is provided so as to protrude from a side 65 that is one side of an end portion that intersects with the belt traveling direction of the belt cutting seat 16C. The second cutting protrusion 53 is provided so as to protrude from the other side 67 which is an end portion that intersects with the belt traveling direction of the belt cutting seat 16C.

The first cutting convex portion 51 and the second cutting convex portion 53 are shapes seen from a direction perpendicular to the belt placement surface 24 and have a non-point relative to the center of the belt placement surface 24. Symmetrical shape. In the case of this figure, the first cutting projection 51 and the second cutting projection 53 have the same trapezoidal shape as viewed from the thickness direction of the belt. That is, the first cutting convex portion 51 and the second cutting convex portion 53 are arranged with their short sides at the top in the figure and their long sides at the bottom in the figure.

The first clamp 18B includes a first clamp body 32B having a first hole 55 in which a first cutting projection 51 is fitted. The first hole 55 has a size that can withstand the first cutting convex portion 51, and the contour seen from the belt thickness direction follows the shape of the first cutting convex portion 51. The first hole 55 is a trapezoid having a short side on the base end side (upper end side in FIG. 26) and a long side on the tip side (lower end side in FIG. 26) of the first clamp body 32B.

The second clamp 18C includes a second clamp body 32C having a second hole 59 fitted into the second cutting projection 53. The second hole 59 has a size capable of withstanding the second cutting projection 53, and the contour seen from the belt thickness direction follows the shape of the second cutting projection 53. The second hole 59 is a trapezoid having a short side on the tip side (the upper end side in the figure) of the second clamp body 32C, and a long side on the base end side (the lower end side in the figure).

The first clamp 18B and the second clamp 18C can be connected only to a specific position with respect to the belt cutting base 16C. That is, the first clamp 18B can be connected only to the side 65 side of one side of the belt cutting base 16C, and the second clamp 18C can be connected only to the side 67 side of the other side of the belt cutting base 16C.

As described above, when the belt cutting jig 10C according to this embodiment is used, the positions of the first clamp 18B and the second clamp 18C and the direction of the cutter 23C are specified relative to the belt cutter 16C. Therefore, even if the user does not pay special attention, the belt cutting jig 10C can form a convex first engaging portion 52A on the first belt end portion 12a and a concave second engaging portion on the second belt end portion 12b. Section 54A.

In the case of this embodiment, although the case where the blade holder 22C has a trapezoidal shape in a plan view has been described, the present invention is not limited to this, as long as it is a non-point symmetrical shape, various shapes can be selected. For example, the blade holder 22C may be triangular or pentagonal.

In the case of this embodiment, although the case where the first cutting convex portion 51 and the second cutting convex portion 53 are trapezoidal in plan view has been described, the present invention is not limited to this. The shape is not point-symmetric, and various shapes can be selected. For example, the first cutting convex portion 51 and the second cutting convex portion 53 may be triangular or pentagonal.

In the case of the present embodiment, it is preferable that the belt engaging device uses a lower mold having a convex portion corresponding to the first convex portion 51 for cutting and the second convex portion 53 for cutting. By using the above lower mold, after cutting, the belt can be joined without changing the clamps.

The protection protrusions 43A and the receiving recesses 49A of the second embodiment described above can also be applied to the first embodiment.

4. Modifications The present invention is not limited to the embodiments described above, and can be appropriately changed within the scope of the gist of the present invention. For example, the belt 12 may also be provided with a belt body such that a reinforcing cloth that imparts durability to the belt 12 is disposed on one surface and the other surface is formed of vulcanized rubber; the first joint portion is provided in the longitudinal direction of the belt body One end; and a second joint portion, which is provided at the other end in the longitudinal direction of the belt body; the whole is formed in two layers. The material of the reinforcing cloth may be, for example, a woven or knitted fabric of polyester fiber, nylon fiber, aramid fiber, glass fiber, carbon fiber, or cotton. The thickness of the fibers forming the reinforcing cloth is not particularly limited, and may be, for example, about 70 to 280 T (dtex). The belt system is made of vulcanized rubber, such as adjustable urethane, hydrogenated nitrile rubber (H-NBR), ethylene propylene diene rubber (EPDM), ethylene propylene rubber (EPM), and chlorosulfonated polyethylene. Band-shaped member. The first joint portion and the second joint portion are plate-shaped members made of a thermoplastic resin such as a polyurethane elastomer, a polyamide elastomer, a polyester elastomer, a polyvinyl chloride-based elastomer, or a polyolefin-based elastomer. The first joint portion and the second joint portion are joined by a belt joining device 60.

When cutting the belt 12, tools such as pliers, vise, pliers can also be used to press the blade to the belt cutting seat.

10A ～ 10C‧‧‧Belt cutting jig

12‧‧‧ Belt

12a‧‧‧1st end of belt

12b‧‧‧ 2nd belt end

14A, 14B‧‧‧Blades

16A ～ 16C‧‧‧belt cutting seat

18A ～ 18C‧‧‧Clamp

22A ～ 22C‧‧‧Blade holder

23A ～ 23C‧‧‧Tool

24‧‧‧ Belt placing surface

25‧‧‧Body

26A, 26B‧‧‧Support

27‧‧‧ groove

28‧‧‧Belt restriction section

29A, 29B‧‧‧Retainer Restriction Section

31‧‧‧ belt facing

32A‧‧‧Clamp body

32B‧‧‧The first clamp body

32C‧‧‧The second clamp body

34‧‧‧Belt Clamp

35‧‧‧ Top surface

36‧‧‧Groove

38‧‧‧Clamp Screw

39‧‧‧ lower hole

40‧‧‧hole

41‧‧‧ base surface

42‧‧‧Escape

43A, 43B‧‧‧Protection

45‧‧‧hole

46‧‧‧ Board

46a‧‧‧upper surface

47‧‧‧ Occluded protrusion

48‧‧‧ surface

49A, 49B ‧‧‧bearing recess

50‧‧‧ Cutting protrusion

51‧‧‧The first cutting protrusion

52A, 52B‧‧‧The first joint

53‧‧‧ 2nd cutting protrusion

54A, 54B‧‧‧ 2nd joint

55‧‧‧The first hole

57‧‧‧Edge

59‧‧‧ 2nd hole

60‧‧‧Belt engagement device

61‧‧‧long side

62‧‧‧ retainer

63‧‧‧ short side

64‧‧‧Pressure body

65‧‧‧ side

66‧‧‧ Upper mold

67‧‧‧side

68‧‧‧ lower mold

70‧‧‧ connector

72‧‧‧Guide groove

76‧‧‧ convex part for joining

78‧‧‧Frame Department

C‧‧‧ Center

D1‧‧‧distance

D2‧‧‧distance

L1 ～ L6‧‧‧imaginary line

P1 ～ P4‧‧‧ Feature points

X‧‧‧ belt travel direction

Y‧‧‧Belt width direction

Z‧‧‧Belt thickness direction

Fig. 1 is a perspective view showing a belt cutting jig of the first embodiment.

Figure 2 is a front view of the blade.

Figure 3 is an exploded perspective view of the belt cutting jig.

Fig. 4 is a longitudinal sectional view of the belt cutting seat.

Figure 5 is a longitudinal sectional view of the clamp body.

Fig. 6 is a perspective view (1) for explaining a cutting method of the belt cutting jig.

Fig. 7 is a perspective view (2) for explaining a cutting method of the belt cutting jig.

Fig. 8 is a diagram for explaining a cutting method of the belt cutting jig; Fig. 8A is a longitudinal section view (1); and Fig. 8B is a longitudinal section view (2).

Fig. 9 is a perspective view (3) for explaining a cutting method of the belt cutting jig.

Fig. 10 is a perspective view (4) for explaining a cutting method of the belt cutting jig.

Fig. 11 is a perspective view showing a belt engaging device.

Figure 12 is an exploded perspective view of the belt engaging device.

Fig. 13 is a longitudinal sectional view (1) for explaining the joining method of the belt joining device.

Fig. 14 is a longitudinal sectional view (2) for explaining a joining method of the belt joining device.

Fig. 15 is a perspective view showing a belt cutting jig of the second embodiment.

Fig. 16 is a bottom view of the blade.

Figure 17 is a front view of the blade.

Figure 18 is a perspective view of the belt cutting seat.

Fig. 19 is a perspective view (1) for explaining a cutting method of the belt cutting jig.

Figure 20A is a top view (1) for explaining the cutting method of the belt cutting jig; Figure 20B is a top view (2).

Fig. 21 is a perspective view (2) for explaining a cutting method of a belt cutting jig.

Fig. 22 is a longitudinal sectional view for explaining a cutting method of a belt cutting jig.

Fig. 23 is a perspective view showing a belt cutting jig of a third embodiment.

Figure 24 is a bottom view of the blade.

Figure 25 is a front view of the belt cutting seat.

Fig. 26 is a bottom view for explaining the cutting method of the belt cutting jig.

Claims (8)

A belt cutting jig includes: A holding body that abuts and holds both end portions of the first belt end portion and the second belt end portion; and A pressurizing body that presses the two ends to the thickness direction of the belt, The aforementioned retention system has: The lower mold, the first belt end portion and the second belt end portion are placed on the upper surface; The upper mold is arranged on the upper surfaces of the first belt end portion and the second belt end portion; Belt clamp At least one clamp body holding the first belt end portion or the second belt end portion therebetween, and the belt clamp is detachably fixed; and A heater for heating the first belt end portion and the second belt end portion, The lower die system has a convex portion for joining, The above-mentioned clamp system has a hole for receiving the aforementioned convex part for joining, Used in a belt engaging device, characterized in that it includes: A belt cutting seat having at least one cutting protrusion inserted into the hole of the clamp body, and detachably connected to the clamp body; and The blade cuts the belt placed on the belt cutting seat. The belt cutting jig according to item 1 of the scope of patent application, wherein the belt cutting seat is provided with an alignment portion for aligning and cutting the belt. The belt cutting jig according to item 1 or 2 of the scope of the patent application, wherein the belt cutting base has a retainer restricting portion that restricts the blade from moving in the belt traveling direction and the belt width direction. According to the belt cutting jig described in item 1 or 2 of the scope of patent application, the length of the belt in the belt cutting direction of the belt cutting seat is the same as the length of the belt in the lower mold. The belt cutting jig according to item 1 of the patent application scope, further comprising a blade holder having a belt facing surface facing the belt placing surface of the belt cutting seat, The blade is provided on the facing surface of the belt, and is formed so that a shape seen from a direction perpendicular to the facing surface of the belt is point symmetrical with respect to a center of the facing surface of the belt. The belt cutting jig according to item 1 of the patent application scope, wherein it comprises a blade holder, The aforementioned blade holder has: The belt facing surface facing the belt placement surface of the aforementioned belt cutting seat; and At least one set of characteristic points on the profile is viewed from a direction perpendicular to the facing surface of the belt, the centers of the facing surface of the belt are opposed to each other, and the distances to the center are different, The blade is provided on the facing surface of the belt, The aforementioned belt cutting seat has: The holder restricting portion has a restricting surface that is in contact with a surface including the aforementioned characteristic point of the blade holder, and restricts the blade from moving in a belt traveling direction and a belt width direction; and The cutting convex portion includes a first cutting convex portion and a second cutting convex portion, The first cutting convex portion and the second cutting convex portion are shapes seen from a direction perpendicular to the belt placement surface, and have a shape that is not point symmetrical with respect to the center of the belt placement surface. The aforementioned clamp system has: The first clamp body is provided with a first hole into which the aforementioned first cutting projection is fitted; and The second clamp body is provided with a second hole into which the aforementioned second cutting protrusion is fitted. The belt cutting jig according to item 1, 2, 5, or 6 of the scope of patent application, which includes a blade holder having a belt facing surface having a belt placement surface facing the belt cutting seat described above. Device, The blade is provided on the facing surface of the belt, The blade holder has a protective protrusion that faces from the belt and projects more than the tip of the blade. A belt engaging device includes the belt cutting jig described in the scope of patent application No. 1, 2, 5, or 6.