JP2001232692A - Method for manufacturing long-sized endless toothed melt and manufacturing device therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for manufacturing a long-sized toothed endless belt by which it is possible to manufacture the long length endless toothed belt, the number of which is optional, without a joint part and in such a manner that the molding manhour is minimum and the process is simple as well as a manufacturing device for the belt. SOLUTION: Flat pulleys 3c, 3a and 3d, 3b which rotate in one piece together are arranged on both sides of a pair of toothed molds 2a, 2b and a core wire is wound around the two pairs of flat pulleys 3c, 3a and 3d, 3b to form core wire fastening parts 4b, 4a. When the core wire is sequentially wound in the direction to the right side from a core wire ring 26, using the ring 26 as a reference, a right-lay core wire 1e is used as the core wire wire for forming a belt constituent body 9. When the core wire is sequentially wound in the direction to the left side from the ring 26, a left-lay core wire 1d is used. Then the belt constituent body 9 is formed by winding the core helically around a section between the toothed molds 2a, 2d with the help of the core wire fastening parts 4b, 4a, and the belt constituent body 9 is filled with a molten thermoplastic elastomer to form a tooth shape. Thus the method for manufacturing the long-sized toothed endless belt as described and the manufacturing device therefore using the method are provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for producing a long endless toothed belt, and more particularly, to a long endless toothed belt made of a seamless thermoplastic elastomer used for power transmission and conveyance. The present invention relates to a method and an apparatus for manufacturing the same.

[0002]

2. Description of the Related Art A toothed belt made of a rubber elastomer or a urethane elastomer is widely used for general industrial applications such as a precision transmission device or a precision conveyance device because a toothed belt is a synchronous transmission system without slip. .

[0003] In this urethane elastomer toothed belt, a cylindrical inner mold having a predetermined size around which a core wire is wound is usually placed in an outer mold, and the urethane elastomer is filled in a gap between the inner mold and the outer mold. After injecting, cross-linking and curing, a method of cutting the obtained wide belt sleeve into a predetermined width is adopted.

[0004] However, in order to manufacture a long toothed belt by this method, the die diameter must be increased. This enlargement of the mold has problems in processing, handling, and cost. In particular, since there is a problem in the dimensional accuracy of the mold, there is a limit in increasing the diameter of the mold, and the production of an endless toothed belt having a belt circumference of 2300 mm is the limit.

[0005] Another manufacturing method is an extrusion molding method, that is, a method in which a sheet-like thermoplastic elastomer extruded from a die of an extruder is combined with an endless continuous belt structure composed of only core wires aligned in a width direction. It is extruded into a cavity defined by the outer peripheral surface of the toothed mold that rotates in conjunction with the flanges on both sides, and the sheet-like elastomer in a molten state is squeezed with a steel band or nip roll to have a predetermined tooth shape. There is a method of manufacturing an end-elongated toothed belt, then cutting it to a predetermined width, and joining the end part to a predetermined length to obtain a long toothed belt.

However, the belt manufactured by this method requires a joining process. For this reason, both ends of the belt are cut in a strip shape or a staggered shape, and both ends are joined in a nested shape. However, since there is a break in the core wire at this joint, no matter how large the adhesive pull-out strength of the joint is, the strength at the joint where the core wire is cut is lower than the strength of the main body. It greatly decreases.

[0007] Further, since the joint portion is subjected to additional processing, its physical properties are slightly different from those of the main body portion, which causes a difference in thickness step or rigidity during processing. Due to such a difference, there are problems such as generation of vibration or meandering.

[0008]

SUMMARY OF THE INVENTION The present invention provides a novel method for producing a continuous belt with an endless tooth having an arbitrary circumferential length without using a conventional outer mold and inner mold. It is an object of the present invention to provide a method and an apparatus capable of manufacturing a long endless toothed belt having an arbitrary peripheral length.

[0009]

The invention according to claim 1 is
In the method for manufacturing a long endless toothed belt using a thermoplastic elastomer, a first step of setting a pair of toothed molds at a predetermined center-to-axis distance, and an outer periphery of the pair of toothed molds,
A second step of winding a core wire from one side to form a core ring, and providing a core locking portion at a predetermined position on the core ring, and rotating the toothed mold, Starting from a pair of toothed molds, a core wire is spirally wound at a predetermined pitch in a predetermined width, and then wound on the other side to form a core ring. A third step of providing a core wire locking portion at a predetermined position, and disposing a belt structure consisting of only a core wound around a pair of toothed molds in a press-contact state between the toothed mold and the steel band. A fourth step of compression-molding the molten thermoplastic elastomer inserted into the cavity between the toothed mold and the steel band by rotating in a co-rotating state, and cooling and solidifying to form a predetermined tooth profile. To manufacture a long endless toothed belt

According to the first aspect of the present invention, it is possible to manufacture an endless long toothed belt having an arbitrary circumference.
And since the core wire ring, that is, the core wire locking portion is wound directly on the toothed mold, a stable core pitch can be obtained,
Thereby, a high-precision long endless toothed belt can be obtained.

According to a second aspect of the present invention, in the third step, the toothed mold is rotated, and the core wire is defined between the pair of toothed molds with the core wire locking portion as a starting point based on the core wire ring. Use a Z twisted core when winding in order from the core ring to the right, use an S twisted core when winding in order from the core ring to the left, and use the means for preventing the core from running over the core. After winding a predetermined width spirally at a predetermined pitch,
2. The manufacturing method according to claim 1, further comprising the step of winding a core wire around the other side to form a core ring, and providing a core locking portion at a predetermined position of the core ring. In the way.

According to the second aspect of the present invention, the core wire is wound around the core wire ring in order from the core wire ring to the right side of the core wire ring between the pair of toothed molds with the core wire locking portion as a starting point. When winding, twist the Z twisted core wire, and when winding in order from the core wire to the left, use the S twisted core wire, and use a core wire riding prevention means to spirally wind the core wire at a predetermined pitch and a predetermined width. By simply winding, the direction in which the core wire is to move is the direction in which the starting point is to be away from the core ring, so that the core wire moves on the mold in the direction of the core ring, and Eliminating the core wire under the core ring is eliminated. Furthermore, since the core wire is spirally wound at a predetermined pitch by using the core wire rising prevention means, even when the core wire is going to move in the winding direction on the mold, the action of the core wire rising prevention means is achieved. As a result, the core wire wound around the mold does not ride on the core wire wound next.

According to a third aspect of the present invention, there is provided a method of manufacturing a long endless toothed belt using a thermoplastic elastomer, wherein a flat pulley integrally rotating is mounted on both sides of a pair of toothed molds, and then a predetermined shaft is formed. A first step of setting the distance, and winding a core wire between a pair of flat pulleys arranged on one side to form a core ring; and providing a core locking portion at a predetermined position of the core ring. In the second step, the toothed mold is rotated, and the core wire is spirally wound at a predetermined pitch and a predetermined width between the pair of toothed molds with the core wire locking portion as a starting point. A third step of forming a core ring by winding a core wire between a pair of flat pulleys arranged in the above, and providing a core wire locking portion at a predetermined position of the core ring, and winding between a pair of toothed molds Between the toothed mold and the steel band. The molten thermoplastic elastomer inserted into the cavity between the toothed mold and the steel band is compression-molded by being disposed in contact with and rotating in a co-rotating state, and is cooled and solidified to form a predetermined tooth profile. It is a manufacturing method of the long endless toothed belt configured in the fourth step.

According to the third aspect of the present invention, it is possible to manufacture an endless long toothed belt having an arbitrary circumference.
In addition, since the core wire ring, that is, the core wire locking portion is wound around the flat pulley provided outside the toothed mold, an expensive toothed mold can be used efficiently.

According to a fourth aspect of the present invention, in the third step, the toothed mold is rotated, and the core wire is inserted between the pair of toothed molds with the core wire locking portion as a starting point based on the core wire ring. Use a Z twisted core when winding in order from the core ring to the right, use an S twisted core when winding in order from the core ring to the left, and use the means for preventing the core from running over the core. After winding a predetermined width spirally at a predetermined pitch,
3. The process according to claim 2, wherein a core wire is formed by winding a core wire between a pair of flat pulleys arranged on the other side, and a core wire locking portion is provided at a predetermined position of the core ring. A method for manufacturing a long endless toothed belt.

According to the invention described in claim 4, according to claim 3,
In addition to the operation according to the invention, when the core wire is wound around the core wire ring in order from the core wire ring to the right side with respect to the core wire ring between the pair of toothed molds with the core wire locking portion as a starting point, Z
When winding the twisted core wire in order from the core ring to the left, the S core is used to move the core wire by spirally winding the core wire at a predetermined pitch and a predetermined width using an S twisted core wire. Since the direction is the direction in which the starting point tends to move away from the core wire, the core wire moves in the direction of the core wire on the mold, and further the core wire goes under the core ring. Is lost. Furthermore, since the core wire is spirally wound at a predetermined pitch by using the core wire rising prevention means, even when the core wire is going to move in the winding direction on the mold, the action of the core wire rising prevention means is achieved. As a result, the core wire wound around the mold does not ride on the core wire wound next.

According to a fifth aspect of the present invention, there is provided an apparatus for manufacturing a long endless toothed belt using a thermoplastic elastomer, comprising: a first step of setting a pair of toothed molds at a predetermined center distance; When winding to the right from the winding start point on one side, use the S twisted core wire around the outer periphery of the toothed mold, and use the Z twisted core wire when winding leftward from the winding start point to wind the core ring. A second step of forming and providing a core wire locking portion at a predetermined position of the core wire ring, and rotating the toothed mold to start the core between the pair of toothed molds starting from the core wire locking portion. When the core wire is wound in order from the core ring to the right side on the basis of the core ring, the core wire adjacent to the core ring is a Z twisted core wire, and a core run-up prevention skewer is further provided as core run-up prevention means. Used, S twist next to the Z twisted core wire After winding the Z twisted core wire and the S twisted core wire alternately and helically at a predetermined pitch by a predetermined width by winding a wire, the core wire is wound around the other side to form a core wire ring. A third step of providing a core wire locking portion at a predetermined position of the core ring, and pressing a belt structure consisting of only the core wound around the pair of toothed molds between the toothed mold and the steel band. By arranging in a state and rotating in a co-rotating state, the thermoplastic elastomer in a molten state inserted into the cavity between the toothed mold and the steel band is compression molded, cooled and solidified to form a predetermined tooth shape. A method for producing a long endless toothed belt, comprising a fourth step.

According to the fifth aspect of the present invention, since the core wire tends to move on the mold in a direction opposite to that of the core wire ring, the core wire may go under the core ring. Double spinning that alternately winds Z twisted and S twisted core wires becomes possible, so that when the belt becomes a belt, the deviation of the belt on the pulley is reduced, and belt failure such as end face damage occurs. Can be suppressed. In addition, by using a core climbing prevention skewer as a core climbing prevention means, when winding a Z-stranded core and an S-strand core alternately, they try to move in the direction approaching each other, The action of the skewer prevents the previously wound core wire from moving to the next core wire side, so that the core wire wound on the toothed mold does not ride on the next core wire.

According to a sixth aspect of the present invention, in the third step, the toothed mold is rotated, and the core wire is positioned between the pair of toothed molds with the core wire locking portion as a starting point with reference to the core wire ring. When winding in order from the core ring in the left direction, the core wire adjacent to the core ring is an S twisted core wire, and further, a core wire run-off prevention skewer is used as a core wire run-off preventing means, and the S twisted core wire is By winding the S twisted core wire and the Z twisted core wire alternately and spirally at a predetermined pitch by a predetermined width by winding a Z twisted core wire next to the core wire, the core wire is wound around the other side. 6. The method of manufacturing a long endless toothed belt according to claim 5, wherein the step of forming the core wire ring and providing a core wire locking portion at a predetermined position of the core wire ring.

According to the fifth and sixth aspects of the present invention, no matter where the winding start point of the core wire is set to the right or left, the core wire does not fall under the core wire ring, and the twists are opposite to each other. Double spinning of alternately winding a core wire having the following is possible. Further, by using the core wire preventing skewers as the core wire rising prevention means, the core wire wound around the toothed mold does not run on the core wire wound next.

According to a seventh aspect of the present invention, there is provided a method of manufacturing a long endless toothed belt using a thermoplastic elastomer, wherein a flat pulley which rotates integrally on both sides of a pair of toothed molds is assembled, and then a predetermined pulley is formed. A first step of setting the distance between the shafts, and an S-strand core wire when wound rightward from the winding start point between a pair of flat pulleys arranged on one side, and a Z wire when wound leftward from the winding start point. A second step of using a twisted core wire, winding the core wire to form a core ring, and providing a core locking portion at a predetermined position on the core ring, and rotating the toothed mold, When the core wire is wound in order from the core wire ring to the right side from the core wire ring between the pair of toothed molds with the wire locking portion as a starting point, the core wire adjacent to the core ring is Z-twisted. As a core wire, and as a means to prevent running over the core wire Using a wire climbing prevention skewer, after winding the Z twisted core wire and the S twisted core wire alternately and spirally at a predetermined pitch by a predetermined width by winding the S twisted core wire next to the Z twisted core wire, A third step of forming a core ring by winding a core wire on the other side, and providing a core locking portion at a predetermined position of the core ring; and a core wound between a pair of toothed molds. The belt structure consisting of only the belt is disposed in pressure contact between the toothed mold and the steel band, and rotated in a co-rotating state, so that the molten heat inserted into the cavity between the toothed mold and the steel band. And a fourth step of compression-molding the plastic elastomer, cooling and solidifying to form a predetermined tooth profile.

According to the invention of claim 7, according to claim 3,
In addition to the operation according to the invention, since the core wire having the twist in the opposite direction to the winding direction of the core wire is used as the core wire to be formed first, the core ring does not move in the winding direction. Further, the core wire tends to move in the opposite direction to the core wire ring on the toothed mold, so that the core wire does not slip under the core wire ring.
Since double spinning in which twisted core wires are alternately wound becomes possible, when a belt is formed, the deviation of the belt on the pulley is reduced, and occurrence of belt failure such as end face damage is suppressed. In addition, by using a core climbing prevention skewer as a core climbing prevention means, when winding a Z-stranded core and an S-strand core alternately, they try to move in the direction approaching each other, The action of the skewer can prevent the previously wound core wire from moving to the next core wire side, so that the core wire wound on the toothed mold will not ride on the next core wire to be wound. Absent.

According to an eighth aspect of the present invention, in the third step, the toothed mold is rotated, and the core wire is set between the pair of toothed molds with the core wire locking portion as a starting point based on the core wire ring. When winding in order from the core ring in the left direction, the core wire adjacent to the core ring is an S twisted core wire, and further, a core wire run-off prevention skewer is used as a core wire run-off preventing means, and the S twisted core wire is By winding the S twisted core wire and the Z twisted core wire alternately and spirally at a predetermined pitch by a predetermined width by winding a Z twisted core wire next to the core wire, the core wire is wound around the other side. The method for producing a long endless toothed belt according to claim 7, which is a step of forming a core wire locking portion at a predetermined position of the core wire ring.

According to the invention of claim 8, according to claim 7,
In addition to the operation according to the invention of the present invention, even if the winding start point of the core wire is set to the right or left, the core wire does not slip under the core ring, and the core wires having opposite twists are alternately formed. Double spinning can be performed. Furthermore, the use of the core-wire prevention skewer as the core-wire-prevention means prevents the core wound on the toothed mold from running on the next core to be wound.

According to a ninth aspect of the present invention, there is provided an apparatus for producing a long endless toothed belt using a thermoplastic elastomer, comprising a pair of toothed molds and a core ring wound around the outer circumference of the pair of toothed molds. A core wire locking portion provided at a predetermined position, a spinning mechanism for spirally winding a core wire between a pair of toothed molds at a predetermined pitch, and an interlocking rotation in a press-contact state with the toothed mold to form a tooth shape. And an extruder for filling a cavity between the toothed mold and the steel band with a molten thermoplastic elastomer.

According to the ninth aspect of the present invention, the distance between the shafts of the pair of toothed molds is obtained from the calculation of the pitch circumference of the toothed belt to be manufactured, and is simply determined by positioning the servomotor at a predetermined position. A long endless toothed belt having a stable core pitch with a circumference can be manufactured.

According to a tenth aspect of the present invention, there is provided an apparatus for manufacturing a long endless toothed belt using a thermoplastic elastomer, comprising: a pair of toothed molds having flat pulleys integrally rotating on both sides; A core wire locking portion provided at a predetermined position of a core ring wound around the outer circumference of the core, a spinning mechanism for spirally winding a core wire at a predetermined pitch between a pair of toothed molds, and a pressure contact state with the toothed mold A long endless toothed belt manufacturing apparatus comprising: a steel band forming an interlocking shape by interlocking and forming a tooth profile; and an extruder filling a cavity between the toothed mold and the steel band with a molten thermoplastic elastomer. It is in.

According to the tenth aspect of the present invention, the distance between the shafts of the pair of toothed molds is obtained from the calculation of the pitch circumference of the toothed belt to be manufactured, and is simply determined by positioning the servomotor at a predetermined position. Since a long long endless toothed belt can be manufactured and the core wire, that is, the core wire locking portion is wound around a flat pulley provided outside the toothed mold, an expensive toothed mold can be efficiently used. And has the effect of improving the yield. In addition, since the core wire ring, that is, the core wire locking portion is wound around the flat pulley provided outside the toothed mold, an expensive toothed mold can be used efficiently.

An eleventh aspect of the present invention is the apparatus for manufacturing a long endless toothed belt according to the ninth or tenth aspect, wherein the spinning mechanism is provided with a means for preventing climbing of the cord. Claim 1
According to the first aspect of the present invention, since the spinning mechanism is provided with the core wire climbing prevention means, even when the core wire is going to move in the winding direction on the mold, the action of the core wire climbing prevention means acts on the mold. The core wire wound next does not ride on the core wire wound around.

According to a twelfth aspect of the present invention, there is provided the apparatus for manufacturing a long endless toothed belt according to the eleventh aspect, wherein the core wire climbing prevention means is a core wire climbing prevention skewer. Claim 1
According to the second aspect of the present invention, since the above-described core wire climbing prevention means is a core wire climbing prevention skewer, when the Z twisted core wire and the S twisted core wire are wound alternately, the core wires will move in a direction approaching each other. However, the action of the core wire climbing prevention skewer can prevent the previously wound core wire from moving to the next core wire side, so that the core wire wound around the toothed mold next The wound core never runs on.

According to a thirteenth aspect of the present invention, there is provided the apparatus for manufacturing a long endless toothed belt according to any one of the ninth to twelfth aspects, wherein a core wire aligning means is provided between the toothed molds. According to the invention as set forth in claim 13, since the core wire aligning means is provided between the toothed molds, the alignment of the core wires can be corrected, and the belt structure having the core wires arranged at an equal pitch is provided. Obtainable.

According to a fourteenth aspect of the present invention, the core wire aligning means includes a cylindrical body or a cylindrical body having grooves formed at least by the number of core wires of the belt member at the same interval as the core wire pitch. 14. The apparatus for manufacturing a long toothed belt according to claim 13, wherein According to the invention as set forth in claim 14, the core wire aligning means includes a columnar body or a cylindrical body in which grooves are engraved at least by the number of core wires of the belt structure at the same interval as the core wire pitch. As a result, the alignment of the cords can be corrected more reliably.

[0033]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A method and an apparatus for producing a long endless toothed belt according to the present invention will be described below in detail with reference to the drawings. 1 is a plan view of a long endless toothed belt, FIG. 2 is a front view of the long endless toothed belt, FIG. 3 is a side view of the long endless toothed belt, and FIG. 4 is an embodiment of the present invention. FIG. 5 is a schematic view showing a first step to a third step of the manufacturing method, and FIG. 6 is a schematic view showing a fourth step of the manufacturing method. FIG. 7 is a partial perspective view of the long endless toothed belt according to the present invention. FIG. 8 is a schematic view showing a third step of the manufacturing method according to another embodiment. FIG. 9 is a schematic view showing a cord aligning means according to the present invention.

In FIGS. 1, 2 and 3, 2a and 2a
Reference numeral b denotes a cylindrical rotatable toothed mold whose temperature can be adjusted to 30 ° C. to 60 ° C., and cooling water for temperature adjustment circulates through the rotary joint 10. A tooth-shaped cavity is formed on the outer peripheral surface of each of the toothed molds 2a and 2b, and flange portions that define the cavity are provided on both sides of the cavity.

First, flat pulleys 3a, 3b, 2a and 2b are provided at both ends of a toothed mold 2a, 2b according to a first embodiment of the present invention.
A method and an apparatus for manufacturing a long endless belt using 3c and 3d integrally assembled will be described in detail.

Hereinafter, the device according to the first embodiment will be described in detail. The flat pulleys 3a, 3b, 3c, 3d are flat pulleys having the same pitch diameter as the toothed molds 2a, 2b, and are integrally assembled on both sides of the toothed molds 2a, 2b, respectively.

The surfaces of the flat pulleys 3a, 3b, 3c and 3d are knurled or have a predetermined roughened surface to frictionally fix the core 1c.
Are formed in a non-slip shape.

Toward the pair of flat pulleys 3a and 3b,
The core wire 1c is fed out from the spinning mechanism 8 shown in FIG.
It is wound a predetermined number of times in between. The core wire ring of the wound core wire 1c is bound and fixed using a separately prepared binding material to form a core wire locking portion 4a.

The spinning mechanism 8 is publicly known, and is provided to face the toothed mold 2b. After that, the core wire 1c is guided between the pair of flat pulleys 3a, 3b and is guided by the core ring that moves around the core wire, and the core wire locking portion 4a serves as a spinning start point between the pair of toothed molds 2a, 2b. It is wound. In addition, a clip material, an electric solder material, or the like can be arbitrarily used as the binding material.

That is, while rotating the toothed molds 2a and 2b, the guide roll 20 is fed laterally by a ball screw feed mechanism (not shown) in the axial direction of the toothed mold 2b so that the core wires 1c have a predetermined pitch. .

At this time, the cord 1c is fed out under a constant tension from a cord tension control mechanism (not shown), and is spirally wound to a predetermined width. When winding is completed, core wire 1c
End is a pair of flat pulleys 3 arranged on the other side.
c, 3d are fixed by providing a core wire locking portion 4b.

The steel band 6 forming a predetermined tooth profile is provided with guide rolls R1, R2 and extension rolls R.
3 and is arranged so as to move in conjunction with the flange portion of the toothed mold 2a in a press-contact state.

The steel band 6 includes guide rolls R1, R
2 and move to a predetermined position by the air cylinder 30 integrally with the stretching roll R3. Next, the extension roll R3 is retracted by the hydraulic cylinder 40, and the steel band 6 is extended to a predetermined tension.

In this state, the molten thermoplastic elastomer 5 is filled from the extruder nozzle 7 into the cavity defined by the toothed mold 2a and the steel band 6, and thereafter,
Due to the tension of the steel band 6, the thermoplastic elastomer 5 is pressurized to a predetermined pressure to form a predetermined tooth shape.

Next, a method of manufacturing the long endless toothed belt according to the first embodiment will be described in detail with reference to FIGS. FIG. 5 is a schematic view showing the first to third steps of the manufacturing method, and FIG. 4 is a schematic view showing the third step of the method of the present invention.
FIG. 6 is a schematic view showing a fourth step of the manufacturing method.

First, in a first step, the tooth shape, the circumference and the width of the toothed belt to be manufactured are specified, and predetermined toothed molds 2a and 2b for making the tooth shape uniform are assembled. Thereafter, the center distance between 2a and 2b is calculated (2 × center distance = belt pitch circumference−pitch diameter of toothed mold × π), and the toothed mold 2b is moved to a ball screw feed mechanism (not shown) according to the calculated value. And the AC servo motor 52 is used for positioning at a predetermined position.

In the second step, a pair of flat pulleys 3a, 3b
The core wire 1c drawn out from the spinning mechanism 8 is wound a predetermined number of times to form a core ring 26, which is bound and fixed with a binding material to form a core locking portion 4a.

At this time, when the core ring 26 is wound rightward from the start point of winding the core wire for forming the core ring 26 to form the core ring 26, the S-twisted core 1d is wound around the core wire 26d. When the core ring 26 is formed by being wound leftward from the starting point, it is preferable to use the Z twisted core 1e.

Here, the S twisted core wire is a core wire whose upper twist is S twist. Regarding the lower twist as a strand, it may be S twist or Z twist. You don't have to. In addition, Z twisted core wire means that the upper twist is Z
This is a twisted core wire, and with regard to the lower twist as a strand, it may be S twist or Z twist, and furthermore, it may not be twisted.

In the third step, a ball screw feed mechanism (not shown) is rotated while rotating the toothed molds 2a and 2b (80 to 150 rpm) using the cord locking portion 4a formed in the first step as a spinning start point. The guide roll 20 of the core wire 1c is laterally fed in the axial direction to form a predetermined core wire pitch and spirally wind up to a predetermined width. When winding of a predetermined width is completed, a pair of flat pulleys 3 on the opposite side
The core wire locking portion 4b is provided on c and 3d as described above. The spinning traverse speed at this time is obtained by the following equation.

Lateral feed speed (m / min) = spinning pitch (m) x toothed mold pitch peripheral speed (π x mold pitch diameter x rpm) / belt pitch peripheral length (m)

In the third step, as shown in FIG. 4, the cord locking portion 4a formed in the first step is used as a spinning start point.
Thereafter, the toothed molds 2a and 2b are rotated (80 to 150r).
pm), the guide roll 20 of the core wire 1c is laterally fed in the axial direction using a ball screw feed mechanism (not shown),
A predetermined core pitch is formed, and spirally wound to a predetermined width. At this time, when the core wire 1c is sequentially wound in the rightward direction (arrow 21 in the drawing) from the core wire ring 26 with the core wire ring 26 as a reference, the Z twisted core wire 1d is used.

When the core wire 1c is sequentially wound rightward (arrow 21 in the figure) from the core ring 26 with reference to the core ring 26, the Z twisted core wire 1d is used to twist the core wire. Due to the characteristic, the force for going in the direction away from the core ring 26 (rightward direction from the core ring 26) acts, so that the core 1d does not sink under the core ring 26.

For the same reason, when the core wire 1c is sequentially wound leftward from the core ring 26 with reference to the core ring 26, an S twisted core wire is used.

Further, it is preferable that a guide roll 20 to be used at the time of spinning is provided with a core wire running-up preventing means 22. By installing the above-described core wire climbing prevention means 22, even if the core wire 1c wound first on the toothed mold is going to move to the next core wire side, the core wire rising prevention means 22 is provided.
Does not cause the next core wire to overlap the previously wound core wire.

Further, the core wire wound between the toothed molds 2a and 2b by using the spinning mechanism has its core pitch corrected by the operation of the core wire alignment means 53 shown in FIGS. The cords are aligned at regular intervals as shown. Therefore, as the final belt structure 9, the cords are aligned neatly and the cords are not disturbed.

Finally, the fourth step will be described with reference to FIG.
While rotating in a direction indicated by an arrow in FIG. 6, the belt-like belt structure 9 composed of only the cords 1c formed in the third step is melted from an extruder (not shown) while rotating the thermoplastic elastomer 5 (1).
75 to 195 ° C.) from the nozzle 7 located above the toothed mold 2a to the steel band 6 and the toothed mold 2a.
Fill between

[0058] Toothed mold 2a and steel band 6
The thermoplastic elastomer 5 filled in the cavity defined by the outer peripheral surface (tooth groove portion) of the steel band 6 is gradually adjusted to a predetermined tooth shape with the interlocking rotation of the steel band 6. The temperature is lowered to about 50 ° C., and finally the toothed belt shown in FIG. 7 is completed. In FIG. 7, the long endless toothed belt 1 has a core wire 1c,
a, a toothed belt with no joints integrally formed with the teeth 1b.

The thermoplastic elastomer 5 according to the present invention
Is mainly made of thermoplastic urethane, polyester elastomer (Hytrel / Dupont Co., Ltd. product, Perprene / Toyobo Co., Ltd. product) or polyamide elastomer (Diamid PAE /
(Product of Daicel Corporation) can also be used.

Although the steel cord is mainly used for the core wire 1c, a low elongation and high strength core wire represented by aramid fiber, polyester fiber, or glass fiber can be used.

Next, the toothed mold 2 according to the second embodiment
a, 2b only, flat pulleys 3a, 3b, 3
A method and an apparatus for manufacturing a long endless toothed belt that does not use c and 3d will be described in detail.

That is, in the first embodiment, the flat pulleys 3a, 3b, 3c, 3d are provided at both ends of the toothed molds 2a, 2b.
Can be provided outside the toothed molds 2a, 2b, thereby fully utilizing the tooth groove forming portions of the expensive toothed molds 2a, 2b. can do.

On the other hand, in the second embodiment, since the flat pulleys 3a, 3b, 3c, 3d are not used, the core rings, that is, the core locking portions 4a, 4b are inevitably connected to the toothed mold 2.
a, 2b, the margin of the long endless toothed belt 1 as a product is reduced accordingly.

However, this method has the following excellent effects. In other words, since the core rings, that is, the core locking portions 4a and 4b, and the core 1c have exactly the same shape and finished surface accuracy as the contact surface wound thereon, the core ring or the core is Locking portions 4a, 4b and core wire 1
c indicates that the friction with the contact surface and the contact conditions during spinning are the same, and as a result, the core wire 1c wound spirally
Pitch is more stable.

The description of the second embodiment is omitted since there is no functional difference except that the positions where the cord locking portions 4a and 4b are wound are different from those of the first embodiment.

Next, as a third embodiment, the belt structure 9
The method for producing a long endless toothed belt in the case where the Z twisted core wire 1d and the S twisted core wire 1e are alternately spinned as the core wire 1c will be described in detail.

FIG. 8 is a schematic view showing the third step described so far. The Z twisted core 1e and the S twisted core 1
It is a figure showing the state where d was spinned alternately.

As in the first embodiment, a pair of flat pulleys 3
The core 1c extended from the spinning mechanism 8 between a and 3b
Is wound a predetermined number of times to form a core wire ring 26, which is bound and fixed with a binding material to form a core wire locking portion 4a. In the case of the embodiment shown in FIG. 8, since the core wire is wound rightward from the core wire winding start point to form the core wire ring 26,
If a Z-stranded core is used, the core moves to the toothed molds 2a and 2b. Therefore, it is preferable to use an S-stranded core 1d. When forming the core wire ring, the flat pulley 3
Needless to say, a core ring can be formed at both end portions of the pair of toothed pulleys 2a, 2b without using a, 3b.

Referring to FIG. 8, the core wire is spun in the third step.
The core wire is connected to the guide roll 20. Here, the core wire connected to the guide roll 20 is an S twisted core wire 1d. Next, the Z twisted core is connected between the S twisted core 1d connected to the guide roll 20 and the core ring 26 by the core locking portion 4b.
And the Z twisted core 1e is passed through the core guide groove 17 of the guide roll 20, so that the Z twisted core 1e is located between the S twisted core 1d and the core ring 26. . By arranging the Z twisted core 1e between the S twisted core 1d and the core ring 26, the Z twisted core 1e does not move in the direction of the core ring 26, so that the core is located below the core ring. There is no line sneaking in.

By using the skewer 22 for preventing the running of the core wire as the means for preventing the running of the core wire, when the Z twisted core wire 1e and the S twisted core wire 1d are alternately spinned, the previously wound core wire is not wound. Even if it is attempted to move to the next core wire side, the core wire climbing prevention skewer 22 prevents the previously wound core wires from moving, so that the core wires do not overlap.

Further, by providing the core wire aligning means 53 between the toothed molds 2a and 2b, the alignment of the core wires can be corrected and the belt structure 9 having the core wires arranged at an equal pitch can be obtained. it can.

In the fourth step of the third embodiment, the first step
The description is omitted because it is the same as the embodiment.

It is preferable to use a core wire climbing prevention skewer as the core wire climbing prevention means 22. However, as long as it can prevent the movement of the core wire against the force of the movement of the core wire, the shape and the material are not limited. Although it does not matter, a hard metal such as a bar-shaped iron or a piece of wood is preferably used.

It is preferable that the core wire alignment means 53 include a columnar body or a cylindrical body in which grooves are cut at least by the number of core wires of the belt member at the same interval as the core wire pitch. However, by using a roll body that rotates in conjunction with the movement of the core wire, extra frictional force is not applied to the core wire, and core wire wear during the spinning process can be reduced. It is preferable to use a roll body that rotates in conjunction with the movement of the roll.

Further, in the cord aligning means 53, grooves are engraved at the same interval as the cord pitch forming the belt construct 9 by at least the number of cords entering the belt construct, and the spinning is completed. After the core wire is locked by the other locking portion 4a, the core wires included in the belt assembly 9 are placed one by one in the grooves corresponding to the individual grooves, and then a pair of toothed molds are formed. By rotating 2a, 2b, a belt structure 9 is obtained in which the cores are aligned and have a well-aligned core.

[0076]

Next, a method and an apparatus for manufacturing a long endless toothed belt according to the present invention will be described based on a first embodiment.

The toothed molds 2a and 2b have a tooth shape T1.
0, number of teeth 110 (pitch diameter 350 mm), tooth width 11
A cylindrical toothed mold having a diameter of 0 mm and a total width of 200 mm was used, and flat pulleys having an outer diameter (344 mmφ) and a width of 10 mm were mounted on both sides of the flat pulleys 3 a, 3 b, 3 c, and 3 d. Further, a 0.6 mmφ steel cord is used for the core wire 1 c, and a pair of flat pulleys 3 c and 3 d and a Z twisted core wire having a Z twist are used as a pair of flat pulleys 3 c and 3 d using an S twist as the upper twist. 1e is wound around the flat pulleys 3a and 3b four to six times to form a core wire ring, and the core wire locking portion 4 is fixed at a predetermined position.
b, 4a were provided.

The long endless toothed belt 1 to be manufactured is
10, 310 teeth (perimeter 3100mm) belt width 11
As a 0 mm toothed belt, the distance between the shafts of the toothed molds 2a and 2b was set to 1000 mm.

The core wire locking portion 4b provided between the flat pulleys 3c and 3d is used as a spinning start point, and the orbital portion of the pair of toothed molds 2a and 2b is regarded as a virtual large-diameter toothed mold, and a diameter of 0 mm is assumed. A 0.6-mm steel cord core wire 1e having a Z-twisted twisted twisted core wire 1e with a spinning tension of 49 N and a spinning pitch of 1.0 mm was used to form a steel cord having a width of 11 mm.
The wire was spirally wound until the length became 0 mm, and further, using a skewer 22 for preventing the running of the core wire, a cord-like belt structure 9 consisting only of the Z twisted core wire 1e was prepared.

At this time, the toothed molds 2a, 2b
Is 100 rpm (110 m / min),
The transverse feed speed of the spinning was 35.5 mm / min.

Further, after the spinning is completed, the end of the end of the core wire is locked to the locking portion 4a, and the belt construct 9
Were passed through the grooves of the cord aligning means 53, and the pair of toothed pulleys 2a and 2b were further rotated to align the cords.

Next, the toothed molds 2a and 2b are rotated to rotate the belt assembly 9 consisting only of the Z twisted core wire 1d at a low speed of 1.0 rpm (peripheral speed of 1.1 m / min). Was rotated in conjunction with the toothed mold 2a in a pressure-contact state.

In this state, 180 °
The thermoplastic urethane elastomer 5 heated to 0 ° C was press-fitted (1 kgf / cm 2) into a cavity defined by the toothed mold 2 a and the steel band 6.

In order to cool and solidify the thermoplastic urethane elastomer 5 in a molten state in parallel with the press-fitting, cooling water for temperature control is supplied from the rotary joint 10 to the toothed mold 2a.
Through the inside, the outlet temperature was controlled at 50 ° C. As a result, the intended long endless toothed belt 1 was obtained.

Example 2 As Example 2, the same toothed molds 2a, 2
b, and the same flat pulley was used. Also, for the core wire 1c, use a steel cord of 0.6 mmφ,
A pair of flat pulleys 3c, 3d and a pair of flat twisted cores 1e, each of which is twisted Z, are wound around the flat pulleys 3a, 3b four to six times to form a core ring. The core wire locking portions 4b and 4a were provided at predetermined positions. The long endless toothed belt 1 to be manufactured had the same belt size as in Example 1, and the distance between the shafts of the toothed molds 2a and 2b was set to the same as in Example 1.

The core wire engaging portion 4b provided between the flat pulleys 3c and 3d is used as a spinning start point, and the orbital portion of the pair of toothed molds 2a and 2b is regarded as a virtual large-diameter toothed mold. 0.6mm in diameter connected to wire locking part 4b
Of the S-core cord of the above-mentioned steel cord having an S-twisted twist was held between the cord locking portion 4b and the guide roll 20 while spinning tension was applied. Next, the Z twisted core is locked to the core wire locking portion 4b between the S twisted core 1d and the core ring 26 connected to the guide roll 20, and the core guide groove of the guide roll 20 is further formed. 17 Z twisted core wire 1
e, the Z twisted core 1e is replaced with the S twisted core 1d and the core ring 2
6 between. At this time, of course, S twisted core wire 1
d is also passed through the core wire guide groove 17 of the guide roll 20,
The core guide groove nearer to the core ring 26 has a Z twisted core 1d.
The S twisted core 1 e was passed through a core guide groove farther than the core ring 26. Then, spinning was performed under the same spinning conditions as in Example 1 to prepare a cord-like belt structure 9 in which Z-strand cores 1e and S-strand cores 1d were alternately arranged.

Then, a belt was manufactured under the same conditions as those of Example 1 in the post-process, and the obtained long endless toothed belt was
By cutting to a width of mm, the intended long endless toothed belt 1 was obtained.

Next, a cast type urethane elastomer belt was used as a comparative example. Put a cylindrical mold of a predetermined size around the core wire of which the twist is Z twist into the outer mold, inject the urethane elastomer into the voids of the inner mold and the outer mold, crosslink, and after curing, The obtained wide belt sleeve was cut into a width of 25 mm.

A thrust force test was conducted using the belt of Example 1 and the belt of Comparative Example. As a test device, an apparatus as shown in FIG. 10 was used, and toothed pulleys 19a, 1a having a flange 31 on one side of one pulley having 14 teeth.
9b, the belt is suspended, the toothed pulley is rotated at 1000 rpm, and the belt 1 is gradually pushed using the thrust force measuring jig 33 provided with the rotating roll 32 with the bearing, when the belt 1 is separated from the flange 31. Is the thrust force. The result is shown in FIG.

From the results shown in FIG. 11, the belt of Example 2 is
A belt in which Z twisted core wires and S twisted core wires are alternately arranged.
Since the core wires are aligned and the core wire pitch is not disturbed, the thrust force is reduced as compared with the comparative example, so that the belt does not shift in one direction when running on the pulley.

As described above, according to the present invention, it is possible to manufacture an endless toothed belt having an arbitrary peripheral length without any joints, whereby the belt strength is lower than that of a conventional joint type endless belt. This greatly improved the vibration or meandering of the belt due to the joint, or enabled accurate positioning.

Further, by changing the twisting direction of the core wire according to the winding direction, a long endless toothed belt can be efficiently manufactured easily. Further, by using the core wire running-up prevention means and the core wire alignment means, it is possible to obtain a long endless toothed belt in which the core wires do not overlap or the pitch between the core wires is not disturbed. Further, by alternately arranging the Z twisted core wire and the S twisted core wire in the belt, it is possible to obtain a belt with less deviation on the pulley, and a failure such as damage to the end face of the belt occurs.

[0093]

According to the first aspect of the present invention, it is possible to manufacture an endless long toothed belt having an arbitrary peripheral length, and a core ring, that is, a core locking part, directly on the toothed mold. , A stable core pitch can be obtained, and a high-accuracy long endless toothed belt can be obtained.

According to the second aspect of the present invention, in the case where the core wire is wound in order from the core ring to the right side with respect to the core ring between a pair of toothed molds with the core wire locking portion as a starting point. When winding the Z twisted core in the left direction from the core ring in order, use the S twisted core and spirally wind the core by a predetermined width at a predetermined pitch using a core running prevention means. Since the direction in which the cord is to move is a direction in which the starting point is away from the core ring, the core moves in the direction of the core ring on the mold,
Further, the core wire does not fall under the core ring. Furthermore, since the core wire is spirally wound at a predetermined pitch by using the core wire rising prevention means, even when the core wire is going to move in the winding direction on the mold, the action of the core wire rising prevention means is achieved. Accordingly, there is an effect that the core wire wound around the mold does not run on the core wire wound next.

According to the third aspect of the invention, it is possible to manufacture an endless long toothed belt having an arbitrary circumference.
Further, since the core wire ring, that is, the core wire locking portion is wound around the flat pulley provided outside the toothed mold, there is an effect that an expensive toothed mold can be used efficiently.

According to the invention described in claim 4, according to claim 3,
In addition to the effect of the invention, when the core wire is wound in order from the core ring to the right side from the core ring between the pair of toothed molds with the core locking portion as a starting point, Z
When winding the twisted core wire in order from the core ring to the left, the S core is used to move the core wire by spirally winding the core wire at a predetermined pitch and a predetermined width using an S twisted core wire. Since the direction is the direction in which the starting point tends to move away from the core wire, the core wire moves in the direction of the core wire on the mold, and further the core wire goes under the core ring. This has the effect of eliminating things. Furthermore, since the core wire is spirally wound at a predetermined pitch by using the core wire rising prevention means, even when the core wire is going to move in the winding direction on the mold, the action of the core wire rising prevention means is achieved. Accordingly, there is an effect that the core wire wound around the mold does not run on the core wire wound next.

According to the fifth aspect of the present invention, since the core wire tends to move on the mold in the opposite direction to the core ring, the core wire does not fall under the core ring. In addition, double spinning, which alternately winds Z twisted and S twisted core wires, becomes possible, so when the belt becomes a belt, the deviation of the belt on the pulley is reduced, and the occurrence of belt failure such as end face damage is suppressed. There is an effect that it can be.

According to the sixth aspect of the present invention, no matter where the winding start point of the core wire is set to the right or left, the core wire does not fall under the core ring, and the twists are opposite to each other. There is an effect that double spinning in which the core wire is alternately wound becomes possible. Further, the use of the skewer for preventing the running of the core wire as the means for preventing the running of the core wire has an effect that the core wound around the toothed mold does not run on the core to be wound next.

According to the seventh aspect of the present invention, the third aspect is provided.
In addition to the effects of the invention, the core wire having the twist in the opposite direction to the winding direction of the core wire is used as the core wire to be formed first, so that the core wire does not move in the winding direction. Furthermore, the core wire tends to move in the opposite direction to the core wire ring on the toothed mold, so that the core wire does not fall under the core wire ring, and furthermore, the Z twist and S
Since double spinning in which twisted core wires are alternately wound becomes possible, when the belt is formed, the bias of the belt on the pulley is reduced, and there is an effect that occurrence of belt failure such as end face damage is suppressed. In addition, by using a core climbing prevention skewer as a core climbing prevention means, when winding a Z-stranded core and an S-strand core alternately, they try to move in the direction approaching each other, The action of the skewer can prevent the previously wound core wire from moving to the next core wire side, so that the core wire wound on the toothed mold will not ride on the next core wire to be wound. There is an effect that there is no.

According to the invention of claim 8, according to claim 7,
In addition to the operation according to the invention of the present invention, even if the winding start point of the core wire is set to the right or left, the core wire does not slip under the core ring, and the core wires having opposite twists are alternately formed. This has the effect of allowing double spinning to be wound. Further, the use of the skewer for preventing the running of the core wire as the means for preventing the running of the core wire has an effect that the core wound around the toothed mold does not run on the core to be wound next.

According to the ninth aspect of the present invention, the distance between the shafts of the pair of toothed molds is obtained from the calculation of the pitch circumference of the toothed belt to be manufactured, and is simply determined by positioning the servomotor at a predetermined position. There is an effect that a long endless toothed belt having a stable core wire pitch with a circumference can be manufactured.

According to the tenth aspect of the present invention, the distance between the shafts of the pair of toothed molds is obtained from the calculation of the pitch circumference of the toothed belt to be manufactured, and is simply set at a predetermined position by a servomotor. Efficient use of expensive toothed molds, since a long endless toothed belt with a circumference can be manufactured, and a core wire, that is, a core wire locking portion is wound around a flat pulley provided outside the toothed mold. Has the effect of improving the yield. In addition, since the core wire ring, that is, the core wire locking portion is wound around the flat pulley provided outside the toothed mold, there is an effect that an expensive toothed mold can be efficiently used.

According to the eleventh aspect of the present invention, since the spinning mechanism is provided with the core wire running-up preventing means, even when the core wire is going to move in the winding direction on the mold, the core wire running-up preventing means is prevented. There is an effect that the core wire wound next on the core wire does not ride on the core wire wound around the mold by the action of the means.

According to the twelfth aspect of the present invention, since the above-mentioned core wire climbing prevention means is a core wire climbing prevention skewer, when winding the Z twisted core wire and the S twisted core wire alternately, they approach each other. The core wire tends to move in the direction, but the action of the core wire climbing prevention skewer can prevent the previously wound core wire from moving to the next core wire side. There is an effect that the core wire to be wound next does not ride on the wound core wire.

According to the thirteenth aspect of the present invention, since the core wire alignment means is provided between the toothed molds, the alignment of the core wires can be corrected, and the belt structure has the core wires arranged at an equal pitch. There is an effect that the body can be obtained.

According to the fourteenth aspect of the present invention, the core wire aligning means includes a cylindrical body or a cylindrical body having grooves formed at least by the number of core wires of the belt member at the same interval as the core wire pitch. Therefore, the alignment of the cords can be corrected more reliably.

[Brief description of the drawings]

FIG. 1 is a partially sectional plan view of a device for manufacturing a long endless toothed belt according to the present invention.

FIG. 2 is a partially sectional front view of a device for manufacturing a long endless toothed belt according to the present invention.

FIG. 3 is a partial cross-sectional side view of a device for manufacturing a long endless toothed belt according to the present invention.

FIG. 4 is a schematic view showing a third step of the manufacturing method according to the present invention.

FIG. 5 is a schematic view showing first to third steps of the manufacturing method according to the present invention.

FIG. 6 is a schematic view showing a fourth step of the manufacturing method according to the present invention.

FIG. 7 is a partial perspective view of a long endless toothed belt according to the present invention.

FIG. 8 is a schematic view showing a third step of the manufacturing method according to another embodiment of the present invention.

FIGS. 9A and 9B are schematic views showing a cord aligning means according to the present invention, wherein FIG. 9A is an overall view and FIG. 9B is an enlarged view of a portion A.

FIGS. 10A and 10B are schematic diagrams of a test device for measuring a thrust force, wherein FIG. 10A is a side view and FIG. 10B is a diagram viewed from above.

FIG. 11 is a graph showing the relationship between the axial load and the thrust force of the toothed belt.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 long endless toothed belt 1a back part 1b tooth part 1c core wire 1d S twisted core wire 1e Z twisted core wire 2a, 2b toothed mold 3a, 3b, 3c, 3d flat pulley 4a, 4b core wire locking part 5 Thermoplastic elastomer 6 Steel band 7 Extruder nozzle 8 Spinning mechanism 9 Belt structure R1, R2 Guide roll R3 Extension roll 10 Rotary joint for cooling water 20 Guide roll 22 Core run-up prevention means 26 Core ring 30, 31 Air cylinder 40 Hydraulic cylinder 52 AC servomotor 53 Wire alignment means

Claims (14)

[Claims] 1. A method for producing a long endless toothed belt using a thermoplastic elastomer, comprising: a first step of setting a pair of toothed molds at a predetermined distance between shafts; A second step of winding a core wire from one side to form a core ring, and providing a core locking portion at a predetermined position on the core ring, and rotating a toothed mold to form the core locking portion. Starting from a pair of toothed molds, a core wire is spirally wound at a predetermined pitch in a predetermined width, and then wound on the other side to form a core ring. A third step of providing a core wire locking portion at a predetermined position, and disposing a belt structure consisting of only a core wound around a pair of toothed molds in a press-contact state between the toothed mold and the steel band. By rotating in co-rotating state, toothed mold and steel A compression molding of the thermoplastic elastomer in the molten state inserted into the cavity between the belts, and cooling and solidifying the thermoplastic elastomer to form a predetermined tooth shape. . And a third step of rotating the toothed mold, and starting from the core wire locking portion as a starting point, moving the core wire between the pair of toothed molds in a rightward direction from the core ring with reference to the core wire ring. When winding in order, use a Z twisted core wire, and when winding in order from the core ring to the left, use an S twisted core wire. The method according to claim 1, wherein after winding the core wire by a predetermined width, a core wire is wound around the other side to form a core wire ring, and a core wire locking portion is provided at a predetermined position of the core wire ring. Manufacturing method of long endless toothed belt. 3. A method for manufacturing a long endless toothed belt using a thermoplastic elastomer, wherein a predetermined pulley distance is set after assembling flat rotating pulleys on both sides of a pair of toothed molds. A first step, a second step of winding a core wire between a pair of flat pulleys arranged on one side to form a core ring, and providing a core locking portion at a predetermined position of the core ring; After rotating the toothed mold, the core wire is spirally wound at a predetermined pitch and a predetermined width between the pair of toothed molds with the core wire anchoring portion as a starting point, and then a pair of the other side arranged on the other side A third step in which a core wire is formed by winding a core wire between flat pulleys and a core wire locking portion is provided at a predetermined position of the core ring, and only a core wire wound between a pair of toothed molds; The belt structure consisting of A fourth step of compression-molding the molten thermoplastic elastomer inserted into the cavity between the toothed mold and the steel band by rotating in a co-rotating state, and cooling and solidifying to form a predetermined tooth shape. A method for producing a long endless toothed belt. 4. A third step is to rotate the toothed mold, and, starting from the wire anchoring portion, move a core wire between the pair of toothed molds from the core wire to the right side with respect to the core wire. When winding in order, use the Z twisted core wire, and when winding in order from the core ring to the left, use the S twisted core wire, and use a winding prevention device to spirally set the core wire at a predetermined pitch. After winding by a width, a core wire is wound between a pair of flat pulleys arranged on the other side to form a core ring, and a core wire locking portion is provided at a predetermined position of the core ring. The method for producing a long endless toothed belt according to claim 2. 5. An apparatus for manufacturing a long endless toothed belt using a thermoplastic elastomer, comprising: a first step of setting a pair of toothed molds at a predetermined distance between shafts; When winding to the right from the winding start point on one side, use the S twisted core wire, and when winding to the left from the winding start point, use the Z twisted core wire to form a core ring. A second step of providing a core wire locking portion at a predetermined position, and rotating the toothed mold, and starting from the core wire locking portion between the pair of toothed molds and using the above-described core wire as a reference. Are wound in the right direction from the core ring in order, the core wire adjacent to the core ring is a Z twisted core wire, and a core run-up prevention skewer is used as a core run-up preventing means.
By winding the S twisted core wire next to the twisted core wire, the Z twisted core wire and S
After alternately winding a twisted core wire and a predetermined width in a spiral at a predetermined pitch, a core wire is wound around the other side to form a core ring. A third step of providing a stop, and a belt structure consisting of only a core wound around a pair of toothed molds is disposed in pressure contact between the toothed mold and the steel band, and rotated in a co-rotating state. A fourth step of compression-molding the molten thermoplastic elastomer inserted into the cavity between the toothed mold and the steel band, and cooling and solidifying to form a predetermined tooth shape. Manufacturing method of long endless toothed belt. 6. A third step is to rotate the toothed mold and to move the core wire between the pair of toothed molds from the core wire ring to the left from the core wire ring between the pair of toothed molds with the core wire locking portion as a starting point. When winding in order, the core wire adjacent to the core wire is an S twisted core wire, and a core run-up prevention skewer is used as a core run-up preventing means, and a Z twisted core wire is placed next to the S twisted core wire. After winding the S twisted core wire and the Z twisted core wire alternately and spirally at a predetermined pitch in a predetermined width, the core wire is wound around the other side to form a core ring. The method for producing a long endless toothed belt according to claim 5, wherein a step of providing a core wire locking portion at a predetermined position of the ring is provided. 7. A method of manufacturing a long endless toothed belt using a thermoplastic elastomer, wherein a flat pulley integrally rotating is mounted on both sides of a pair of toothed molds, and then a predetermined center distance is set. In one process, between the pair of flat pulleys arranged on one side, use the S twisted core wire when winding rightward from the winding start point, and use the Z twisted core wire when winding leftward from the winding start point, A second step of winding the core wire to form a core ring and providing a core locking portion at a predetermined position on the core ring; and rotating the toothed mold to set the core locking portion at a starting point. When the core wire is wound in order from the core ring to the right side between the pair of toothed molds based on the core ring, a core wire adjacent to the core ring is a Z-twisted core wire, and further a core wire. Use a core wire climbing prevention skewer as a climbing prevention means Yes, the Z
By winding the S twisted core wire next to the twisted core wire, the Z twisted core wire and S
After alternately winding a twisted core wire with a predetermined pitch in a spiral at a predetermined pitch and then winding a core wire around the other side, a core ring is formed. A third step of providing a stop, and disposing a belt structure consisting of only a core wound around a pair of toothed molds in a press-contact state between the toothed mold and the steel band, and rotating in a corotating state. And a fourth step of compression-molding the molten thermoplastic elastomer inserted into the cavity between the toothed mold and the steel band, cooling and solidifying to form a predetermined tooth shape. Manufacturing method of long endless toothed belt. 8. A third step is to rotate the toothed mold, and start the core wire between the pair of toothed molds with the core wire locking portion as a starting point and move the core wire leftward from the core wire ring with reference to the core wire ring. When winding in order, the core wire adjacent to the core wire is an S twisted core wire, and a core run-up prevention skewer is used as a core run-up preventing means, and a Z twisted core wire is placed next to the S twisted core wire. After winding the S twisted core wire and the Z twisted core wire alternately and spirally at a predetermined pitch in a predetermined width, the core wire is wound around the other side to form a core ring. The method for producing a long endless toothed belt according to claim 7, wherein the step of providing a core wire locking portion at a predetermined position of the ring is performed. 9. An apparatus for manufacturing a long endless toothed belt using a thermoplastic elastomer, comprising: a pair of toothed molds; and a core provided at a predetermined position of a core wire wound around the outer circumference of the pair of toothed molds. A wire locking portion, a spinning mechanism that spirally winds a core wire between a pair of toothed molds at a predetermined pitch, a steel band that forms a tooth shape by interlockingly rotating in a press-contact state with the toothed mold, and toothed. An extruder for filling a molten thermoplastic elastomer into a cavity between a mold and a steel band, and an extruder for producing a long endless toothed belt. 10. A device for producing a long endless toothed belt using a thermoplastic elastomer, comprising: a pair of toothed molds having flat pulleys rotating integrally therewith disposed on both sides; and a core wound around the outer circumference of the pair of flat pulleys. A core wire locking portion provided at a predetermined position of a wire ring; a spinning mechanism for spirally winding a core wire at a predetermined pitch between a pair of toothed molds; An apparatus for producing a long endless toothed belt, comprising: a steel band for forming a shape; and an extruder for filling a cavity between the toothed mold and the steel band with a molten thermoplastic elastomer. 11. The apparatus for manufacturing a belt with long endless teeth according to claim 9, wherein the spinning mechanism is provided with a means for preventing a cord from running up. 12. The apparatus for manufacturing a belt with long endless teeth according to claim 11, wherein the core wire run-off preventing means is a core wire run-up prevention skewer. 13. An apparatus for manufacturing a long endless toothed belt according to claim 9, wherein a core wire aligning means is provided between said toothed molds. 14. The core wire aligning means according to claim 13, wherein said core wire aligning means includes a cylindrical body or a cylindrical body having grooves formed at least by the number of core wires of the belt structure at the same interval as the core wire pitch. An apparatus for producing a long toothed belt according to the above.