JP7221842B2 - Transmission belt mark printing method and transmission belt mark printing system - Google Patents

Description

The present invention relates to a transmission belt mark printing method, which is a method of printing marks on a transmission belt, and a transmission belt mark printing system for printing marks on a transmission belt.

2. Description of the Related Art Conventionally, circular power transmission belts used for transmitting power display product-related information such as the manufacturer's name, product brand name, manufacturing lot number, date of manufacture, country of manufacture, and logo. As a method of displaying a mark composed of characters, patterns, etc. including these on the transmission belt, for example, the mark is printed on a base material composed of a film, and the mark is transferred to the transmission belt through this base material. Therefore, a method of displaying a mark on the transmission belt is used.

Other methods of displaying marks on the transmission belt include spraying ink on the transmission belt, pressing a stamp filled with ink against the transmission belt, or providing a mark to form unevenness on the surface of the transmission belt. There is a way. However, the method of spraying ink onto the transmission belt, the method of pressing a stamp filled with ink against the transmission belt, and the method of forming unevenness on the surface of the transmission belt impose a very heavy burden on the operator. It also requires a lot of working hours. Therefore, in order to efficiently display marks on many transmission belts, conventionally, a method of transferring marks to the transmission belts via a base material on which the marks are printed has been used.

For example, Patent Literature 1 discloses a method of printing a mark by using a transparent film made of synthetic resin as a base material and transferring the mark through the base material. In this method, marks are printed in advance on a substrate made of a film. Then, in the manufacturing process of the transmission belt, the base material on which the mark is printed is superimposed on the rubber belt made of an unvulcanized rubber material, and the rubber belt is vulcanized in this state, thereby vulcanizing the rubber belt. The mark is transferred to the rubber belt by thermal welding. As a result, the mark is printed and displayed on the transmission belt formed by vulcanizing the rubber belt.

JP-A-5-42754

The operation of stacking the base material made of film on which the mark is printed on the unvulcanized rubber belt is performed manually on the narrow rubber belt, and each rubber belt is printed in a predetermined print area. This is done by arranging a number of substrates in correspondence. In addition, the film, which is the base material used for transfer, is manually peeled off after vulcanization.

As described above, in the method of transferring the mark to the transmission belt via the base material on which the mark is printed, many films as the base material are manually arranged on the narrow rubber belt. of work time is required. In addition, there is the problem that the work of manually peeling off the base film after vulcanization is troublesome and requires a lot of work time.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a transmission belt mark printing method and a transmission belt mark printing system capable of shortening the work time for printing marks on a transmission belt. .

(1) A method for printing marks on a transmission belt according to an aspect of the present invention for solving the above problems is a mold unit configured by stacking a plurality of ring-shaped molds. A vulcanization step in which a plurality of said transmission belts are vulcanized in a state in which unvulcanized annular transmission belts are fitted, and marks printed on said transmission belts are printed from an ink supply device filled with ink. a first transfer step in which the mark is transferred to a pad as a transfer medium; and the pad to which the mark has been transferred in the first transfer step is pressed against the transmission belt held in the mold unit in a vulcanized state. and a second transfer step in which the mark is transferred to the transmission belt by being transferred.

In the transmission belt mark printing method described above, the mark transferred to the pad in the first transfer step is transferred to the vulcanized transmission belt held in the mold unit. That is, according to the above configuration, in the mark printing on the transmission belt, the mark is printed on the base material composed of the film, the base material is superimposed on the rubber belt in an unvulcanized state, and the rubber belt with the base material superposed thereon is formed. The vulcanization eliminates the conventional process of transferring marks to the transmission belt by heat welding during vulcanization. Therefore, according to the above configuration, the conventional work requiring a lot of work time, such as arranging a large number of substrates on which marks are printed on a narrow rubber belt, becomes unnecessary, and the work time can be shortened. Further, as described above, since the mark can be transferred to the transmission belt while it is held in the mold unit after vulcanization, the working time can be shortened. When the mark is transferred to the transmission belt, it is conceivable that the transmission belt is removed from the mold, conveyed to a location where the transfer is performed, and the mark is transferred to the conveyed transmission belt. In this case, it is necessary to remove the transmission belt from the mold, transport it to a transfer location, and align it. However, according to the transmission belt mark printing method, there is no need to remove the transmission belt, convey it to a transfer location, and align it. Therefore, it is possible to further shorten the working time for printing marks on the transmission belt.

Further, in the above-described mark printing method for the transmission belt, in the first transfer step, the mark printed on the transmission belt is transferred to a pad as a transfer medium, and in the second transfer step, in the first transfer step The mark transferred to the pad is transferred to the vulcanized transmission belt. That is, the mark is transferred using a pad as a transfer medium for transferring the mark. Therefore, according to the above-described method for printing marks on a transmission belt, it is not necessary to print marks using a base material as in the conventional art, and a pad is used as a transfer medium, and the mark transferred to the pad is simply pressed against the transmission belt. can print marks on the transmission belt. As a result, it is possible to continuously and easily print marks on the transmission belt, and it is possible to shorten the working time for printing.

In addition, according to the method of printing a mark on the transmission belt, it is not necessary to arrange the base material composed of the film on the transmission belt. No mistakes are made. In addition, since the base material is not used in the first place, there is no problem in displaying marks on the transmission belt when the film as the base material is wrinkled, bent, or distorted.

Furthermore, according to the method of printing the mark on the transmission belt, since the film as the base material is not used, the work time required for peeling off the film from the vulcanized transmission belt becomes unnecessary, and the work time for printing is shortened. be able to.

Therefore, according to the above configuration, it is possible to provide a method for printing marks on a transmission belt that can shorten the work time for printing marks on the transmission belt.

(2) Preferably, the method for printing marks on a transmission belt further includes a cooling step of cooling the transmission belt onto which the marks have been transferred by the pad.

In the above-described method for printing marks on a transmission belt, in addition to the vulcanization process, the first transfer process, and the second transfer process, a cooling process is performed on the transmission belt onto which the marks have been transferred. That is, the second transfer step in which the marks are transferred to the transmission belt is performed before the vulcanized transmission belt is cooled. For this reason, the mark is transferred to the transmission belt which is still hot after vulcanization, thereby promoting the drying of the mark. That is, the heat applied to the transmission belt during vulcanization can be effectively used to dry the marks transferred to the transmission belt in a short time. Furthermore, when the mark is printed after cooling the vulcanized power transmission belt, a separate mark drying step is required, but such a step is not required.

(3) Preferably, in the method for printing a mark on a transmission belt, the mark is transferred to the pad from the ink supply device in the first transfer step, and the pad rotates extending parallel to the rotation axis of the mold unit. It has a columnar main body portion rotatable around an axis, and in the second transfer step, the mold unit is rotated while the pad is pressed against the transmission belt fitted in the mold unit. Thus, the mark is transferred to the transmission belt.

In the above-described mark printing method for the transmission belt, the rotation of the transmission belt can be performed by rotating the mold unit. A columnar main body portion rotatably provided around a pad rotation axis extending parallel to the rotation axis of the mold unit is pressed against the revolving transmission belt. Therefore, the mark can be efficiently transferred to the entire circumference of the transmission belt while rotating the mold unit together with the transmission belt. As a result, it is possible to further shorten the working time for printing marks on the transmission belt.

(4) A mark printing system for a transmission belt according to an aspect of the present invention for solving the above problems includes a vulcanizing device for vulcanizing a plurality of unvulcanized transmission belts, and the transmission belt filled with ink. and a transfer device for transferring the mark to the transmission belt in a vulcanized state. has a mold unit formed with grooves in which a plurality of unvulcanized annular transmission belts are fitted on the outer peripheral side by the ink supply device, and the ink supply device includes an ink holding portion for holding the filled ink, and the ink a mark forming unit that forms the mark by supplying the ink from a holding unit; and the transfer device includes a pad as a transfer medium onto which the mark formed in the mark forming unit is transferred; a pad driving unit that movably holds a pad and drives the pad so as to transfer the mark transferred to the pad to the transmission belt held in the mold unit in a vulcanized state; have

According to the mark printing system for the transmission belt of this embodiment, the mark transferred to the pad is transferred to the vulcanized transmission belt held in the mold unit. That is, in the above-described mark printing system for the transmission belt, the conventional process of transferring the mark to the transmission belt using the substrate made of the film becomes unnecessary. Therefore, according to the above mark printing system for transmission belts, conventional work that requires a lot of work time, such as arranging a large number of substrates on which marks are printed on narrow rubber belts, is no longer required, and the work time can be shortened. can. In addition, since the mark can be transferred to the transmission belt that is still held in the mold unit after vulcanization, the working time can be shortened. When transferring the mark to the transmission belt, it is conceivable to remove the transmission belt from the mold, convey the belt, and then transfer the mark to the conveyed transmission belt. In this case, it is necessary to remove the transmission belt from the mold, transport it to a transfer location, and align it. However, according to the transmission belt mark printing system, there is no need to remove the transmission belt, convey it to a transfer location, and align it. Therefore, it is possible to further shorten the working time for printing marks on the transmission belt.

Further, according to the mark printing system for the transmission belt of the present embodiment, the mark is transferred to the vulcanized transmission belt by the pad and the pad driving section that drives the pad. That is, the pad is moved by the driving force of the pad driving section, the mark formed in the mark forming section is transferred to the pad, and further transferred to the transmission belt held in the mold unit in a vulcanized state. The mark is transferred. Therefore, according to the above mark printing system for the transmission belt, it is not necessary to print the mark using the base material as in the conventional art, and the pad is used as the transfer medium and is driven by the pad driving section, and the mark is transferred to the pad. A mark can be printed on the transmission belt simply by pressing the mark against the transmission belt. As a result, it is possible to continuously and easily print marks on the transmission belt, and it is possible to shorten the working time for printing.

In addition, according to the above mark printing system for the transmission belt, it is not necessary to arrange the base material composed of the film on the transmission belt. No mistakes are made. In addition, since the base material is not used in the first place, there is no problem in displaying marks on the transmission belt when the film as the base material is wrinkled, bent, or distorted.

Furthermore, according to the above mark printing system for the transmission belt, since the film as the base material is not used, the work time for peeling off the film from the vulcanized transmission belt becomes unnecessary, and the work time for printing is shortened. be able to.

Therefore, according to the above mark printing system for the transmission belt, it is possible to shorten the work time for printing the mark on the transmission belt.

INDUSTRIAL APPLICABILITY The present invention can provide a method for printing marks on a transmission belt and a system for printing marks on a transmission belt, which can shorten the work time for printing marks on the transmission belt.

4 is a flow chart showing steps of a method for printing marks on a transmission belt according to an embodiment of the present invention; BRIEF DESCRIPTION OF THE DRAWINGS It is the figure which looked at the mark printing system of the transmission belt which concerns on embodiment of this invention from the front side, and is the figure which includes a part cross section. FIG. 3 is a view of the main part of the mark printing system shown in FIG. 2 as seen from the front side, including a partial cross section; 3 is a plan view of the main part of the mark printing system shown in FIG. 2; FIG. 5 is a view of the mold unit in the mark printing system shown in FIG. 4 as seen from a direction perpendicular to the axial direction; FIG. It is a figure which expands and shows a one part cross section of the metal mold|die unit shown in FIG. FIG. 3 is a schematic diagram for explaining an ink holding section and a mark forming section of an ink supply device used in a method for printing marks on a transmission belt; FIG. 4 is a diagram for explaining an ink removing device used in a method of printing marks on a transmission belt; FIG. 4 is a diagram for explaining a mark forming unit used in a method of printing marks on a transmission belt; FIG. 4 is a diagram showing an example for explaining the operation of mark printing by the mark printing system for the transmission belt, and is a diagram schematically showing a state in which marks are transferred to a transfer medium. FIG. 4 is a diagram showing an example for explaining the operation of mark printing by the mark printing system for the transmission belt, and is a diagram schematically showing the mold unit installed in the mold support device together with the transfer device. FIG. 4 is a diagram showing an example for explaining the operation of mark printing by the mark printing system for the transmission belt, and schematically showing a state in which marks are transferred to the transmission belt after vulcanization. 4 is a table describing a printing process for printing marks on a transmission belt in an example. FIG. 2 is a table showing a list of evaluation items and evaluation results for the printed state of marks on a transmission belt printed in Examples. FIG.

EMBODIMENT OF THE INVENTION Hereinafter, it demonstrates, referring drawings for the form for implementing this invention. The present invention can be widely applied to various uses as a transmission belt mark printing method, which is a method of printing marks on a transmission belt, and a transmission belt mark printing system for printing marks on a transmission belt. It is possible.

[Overview of mark printing method]
Hereinafter, a method for printing marks on a transmission belt according to an embodiment of the present invention will be described. FIG. 1 is a flow chart showing steps of a mark printing method for a transmission belt according to an embodiment of the present invention (hereinafter also simply referred to as a mark printing method of the present embodiment). A method for printing marks on a transmission belt according to an embodiment of the present invention is configured as a method for printing marks on a transmission belt.

In the mark printing method of the present embodiment, the mark is printed on the power transmission belt, which is a power transmission belt for transmitting power. Configured. The power transmission belt on which the mark is printed may be an annular power transmission belt for power transmission, and examples thereof include V-belts, V-ribbed belts, and frictional power transmission belts such as flat belts. Further, the transmission belt on which the mark is printed is configured as a transmission belt in which the rubber component is vulcanized, and includes, for example, vulcanized rubber and core wires or cores. Further, the power transmission belt on which marks are printed may include a jacket cloth depending on the application.

Further, as the marks printed on the transmission belt, characters, patterns, and the like are printed to indicate information regarding the transmission belt as a product. Examples of items of information relating to the power transmission belt as a product include the manufacturer name, product brand name, logo, country of origin, manufacturing lot number, date of manufacture, belt size, and the like.

The mark printing method of the present embodiment shown in FIG. 1 includes vulcanization step S101, ink supply step S102, and transfer step S103. The transfer step S103 includes a first transfer step S104, a second transfer step S105, and an ink removal step S106.

FIG. 2 is a diagram including a partial cross-section of a mark printing system 100 for a power transmission belt according to an embodiment of the present invention (hereinafter also simply referred to as a mark printing method system of the present embodiment) viewed from the front side. is. FIG. 3 is a view of the main part of the mark printing system 100 shown in FIG. 2 as seen from the front side, including a partial cross section. 4 is a plan view of the main part of the mark printing system shown in FIG. 2. FIG. Also, the mark printing method of the present embodiment is executed by the mark printing system 100 shown in FIG.

The vulcanization step S101, the ink supply step S102, and the transfer step S103 in the mark printing method of the present embodiment are executed by the mark printing system 100 shown in FIGS. A second transfer step S105 and an ink removal step S106 are performed. 3, description of the vulcanizing can 12 of the vulcanizing apparatus 10 is omitted.

In the mark printing method of the present embodiment, an example in which the mark printing method of the present embodiment is executed by the mark printing system 100 will be described. The mark printing method of this embodiment may be executed based on the work of the operator. In this case, the vulcanization step S101, the ink supply step S102, and the transfer step S103 are executed based on the work performed by the operator. S106 is executed.

In the following description, first, the mark printing system 100 will be described, and then details of each step of the mark printing method of the present embodiment, which are executed by the operation of the mark printing system 100, will be described.

[Overview of mark printing system]
The mark printing system 100 is configured as a system that prints a predetermined mark M including a belt size and the like on a transmission belt C, which is a printing target, using a pad 31 as a transfer medium. The mark printing system 100 includes a vulcanizing device 10 , a mold support device 50 , an ink supply device 20 , a transfer device 30 , an ink removal device 40 and a control device 60 .

[Vulcanizing equipment]
FIG. 5 is a view of the mold unit in the mark printing system 100 shown in FIG. 4 as seen from a direction perpendicular to the axial direction. 6 is an enlarged view showing a cross section of a part of the mold unit shown in FIG. 5. FIG. The vulcanization device 10 is a device for vulcanizing a plurality of unvulcanized transmission belts C2. In the following, the power transmission belt C has a vulcanized state and an unvulcanized state, and the vulcanized power transmission belt C is also referred to as a vulcanized power transmission belt C1. Further, the unvulcanized power transmission belt C is configured as an unvulcanized rubber molded body, and is also referred to as an unvulcanized rubber molded body C2. The vulcanization apparatus 10 has a mold unit 11 and a vulcanization can 12 .

The mold unit 11 is configured by stacking ring-shaped molds (hereinafter also referred to as ring molds) 13 formed in a disk shape or a cylindrical shape. The mold unit 11 is formed in a substantially cylindrical shape by being layered. Further, grooves 14 are formed on the outer peripheral side of the mold unit 11, in which a plurality of unvulcanized annular transmission belts C2 are fitted.

The ring mold 13 is a mold for vulcanizing the unvulcanized rubber molding C2, and is used in a state in which a plurality of them are laminated. That is, the ring molds 13 constitute the mold unit 11 by being superimposed on each other in the axial direction. A groove 14 extending along the outer circumference of the mold unit 11 is formed between the axially adjacent ring molds 13 and on the outer circumference side thereof. Therefore, the mold unit 11 is provided with a plurality of grooves 14 .

Each of the plurality of grooves 14 formed in the mold unit 11 is formed in a trapezoidal shape with a wider opening side in a cross section perpendicular to the circumferential direction of the mold unit 11 . A plurality of unvulcanized rubber moldings C2 held in the mold unit 11 are arranged in parallel at a predetermined pitch. A groove 14 is formed in each mold unit 11 so that one unvulcanized rubber molding C2 can be attached to one ring mold 13 . That is, the mold unit 11 is constructed so that the unvulcanized rubber molding C2 is arranged and laminated between the individual ring molds 13 when the ring molds 13 are laminated. 5 and 6 schematically show a state in which the transmission belt C is not fitted into the ring mold 13. As shown in FIG.

[Mold support device]
The mold support device 50 is provided as a mechanism for rotating the transmission belt C<b>1 after vulcanization held by the mold unit 11 . The mold support device 50 has a pair of support bases 51 , 51 , a rotary shaft 52 and a drive motor 53 .

A pair of support bases 51 , 51 are configured to rotatably support the mold unit 11 via a rotating shaft 52 . A drive motor 53 is provided on one of the pair of support bases 51, 51 in this embodiment. That is, the support base 51 on one side of the pair of support bases 51 , 51 is configured as a drive-side support base 54 and has a drive motor 53 that imparts rotational force to the mold unit 11 . The support base 51 on the other side is configured as a driven side support base 55 that rotatably supports the mold unit 11 .

The rotary shaft 52 is installed on a pair of support stands 51, 51 together with the mold unit 11 that holds the transmission belt C1 after vulcanization. The rotating shaft 52 is installed horizontally. That is, the rotating shaft 15 of the mold unit 11 is installed parallel to the rotating shaft of the pad 31 provided so as to bridge between a pair of guide portions 35, 35, which will be described later.

The mold support device 50 is controlled based on a control command from the control device 60 so that the drive motor 53 rotates in conjunction with the movement of the pad 31 of the transfer device 30 .

[Ink supply device]
2 to 4, the ink supply device 20 is a device for forming marks to be printed on the transmission belt C1 after being filled with ink and vulcanized. The ink supply device 20 has an ink holding section 21 and a mark forming section 22 .

FIG. 7 is a schematic diagram for explaining the ink holding section 21 and the mark forming section 22 of the ink supply device 20 used in the mark printing method for the transmission belt. The ink holding portion 21 is configured as a portion that supplies ink to the mark forming portion 22 that forms the marks M printed on the transmission belt C. As shown in FIG. The ink holding portion 21 includes a sponge unit 21a and a pressing portion 21b. The sponge unit 21 a holds ink to be supplied to the mark forming section 22 . In the sponge unit 21a, ink is absorbed from an ink tank (not shown) through an ink supply path (not shown). The sponge unit 21a is configured such that the absorbed ink oozes out from the sponge unit 21a to the mark forming portion 22 when pressed by the pressing portion 21b. That is, the pressing portion 21b presses the sponge unit 21a holding the ink from below to supply the mark forming portion 22 with a predetermined amount of ink. A plurality of ink supply devices 20 may be used simultaneously, and in this case, inks of the same color or different colors may be used in each ink supply device 20 . In the ink holding portion 21 , ink is supplied to the mark forming portion 22 by the pressing portion 21 b based on the control command from the control device 60 .

A mark M for printing on the vulcanized power transmission belt C<b>1 is formed in the mark forming portion 22 via the pad 31 . The mark forming portion 22 is made of a synthetic resin material having numerous holes. When the pressing portion 21b is pressed in the direction indicated by the solid line arrow in FIG. 7, the mark forming portion 22 sees ink from the sponge unit 21a holding the ink. Directionally supplied. In the ink supply device 20 , the mark M is formed on the mark forming section 22 in conjunction with the movement of the pad 31 of the transfer device 30 based on the control command from the control device 60 .

[Transfer device]
2 to 4, the transfer device 30 is configured as a device for transferring the mark M formed in the mark forming portion 22 onto the vulcanized transmission belt C1 held in the mold unit 11. . The transfer device 30 has a pad 31 and a pad driver 32 . The transfer device 30 is arranged adjacent to the vulcanization device 10 and the ink supply device 20 . Note that the pad drive unit 32 is shown in a partially omitted form in FIG.

The pad 31 serves as a transfer medium to which the mark M formed on the mark forming portion 22 is transferred in the first transfer step S104 of the transfer step S103. In addition, the pad 31 is a portion that is pressed against the vulcanized transmission belt C1 in the second transfer step S105 of the transfer step S103, and is a portion that prints the mark M on the vulcanized transmission belt C1. Pad 31 is formed in a columnar shape from a silicon material. The pad 31 has a columnar main body portion 33 formed in a columnar shape at least in part.

In the first transfer step S104 of the transfer step S103, the columnar main body portion 33 rotates while being pressed against the mark forming portion 22 of the ink supply device 20, thereby transferring the mark M thereon. Further, in the second transfer step S105 of the transfer step S103, the columnar main body portion 33 is pressed against the vulcanized transmission belt C1, and rotates with the circular movement of the transmission belt C, so that the mark M is formed on the transmission belt C. to transcribe.

2 to 4, the pad 31 has a pad rotating shaft 34 and is rotatably supported with respect to the pad driving section 32. As shown in FIG. The pad rotating shaft 34 is installed horizontally. That is, the columnar body portion 33 extends parallel to the rotation axis of the mold unit 11 and is rotatably provided. Also, the pad 31 is provided movably by a pad driving section 32 between the mark forming section 22 of the ink supply device 20 and the transmission belt C held by the mold unit 11 .

The pad driving section 32 is a section for moving the pad 31 horizontally and vertically. The pad drive unit 32 movably holds the pad 31 and transfers the mark M transferred to the pad 31 to the vulcanized transmission belt C<b>1 held by the mold unit 11 . The pad driving portions 32 are provided at both ends of the pad rotating shaft 34 of the pad 31 . The pad driving section 32 has a driving mechanism (not shown) for moving the pad 31 and a guide section 35 for guiding the driving of the pad 31 . The drive mechanism is configured using, for example, a cylinder unit, a linear motor mechanism, and a ball screw mechanism, and drives the pad 31 vertically and horizontally. Further, the pad 31 is rotatably supported by the guide portion 35 around the pad rotating shaft 34 . The transfer device 30 drives the pad 31 by the driving mechanism based on the control command from the control device 60 .

[Ink removal device]
FIG. 8 is a diagram for explaining the ink removing device 40 used in the mark printing method for the transmission belt. The ink removing device 40 used in the mark printing method for the transmission belt according to the present embodiment is impregnated in the pad 31 when, for example, the mark M transferred to the vulcanized transmission belt C1 is switched to another mark M. It is configured as a device that absorbs and removes ink that is present. The ink removing device 40 includes an ink removing sheet 41 , an ink removing table 42 , and an ink removing sheet supply mechanism 43 .

The ink removal sheet 41 is configured as a sheet material that absorbs and retains ink, and is configured as impregnated paper, for example. When the mark M transferred to the transmission belt C1 after vulcanization is switched, the ink impregnated in the pad 31 is pressed against the ink removing sheet 41 made of impregnated paper while rotating. It is absorbed by the removal sheet 41 and removed from the pad 31 . When the ink on the pad 31 is absorbed by the ink removing sheet 41, the pad 31 is rotated on the ink removing sheet 41 while being pressed to absorb the ink. As another method for absorbing ink into the ink removing sheet 41, the ink removing sheet 41 may be held on the ink removing table 42, and the pad 31 may be moved and rotated along the ink removing sheet 41. .

The ink removal table 42 has a planar upper surface so that the ink removal sheet 41 can be placed in a flat state, and is configured to support the ink removal sheet 41 in a flat state. Therefore, when rotating while pressing the pad 31 against the ink removing sheet 41 placed on the ink removing table 42, the pad 31 is pressed against the ink removing sheet 41 in a state of being firmly attached. The operation of rotating the pad 31 while pressing it against the ink removing sheet 41 placed on the ink removing table 42 is performed by driving the pad 31 with the pad driving section 32 of the transfer device 30 .

The ink removing sheet supply mechanism 43 holds, for example, the ink removing sheet 41 wound in a roll shape, pays out the ink removing sheet 41, supplies the ink removing sheet 41 onto the ink removing table 42, and absorbs the ink. It is configured as a mechanism for winding the ink removal sheet 41 . The ink removal sheet supply mechanism 43 operates based on a control command from the control device 60, and supplies and winds up the ink removal sheet 41 on the ink removal table 42 with the pad 31 pressed against the ink removal sheet 41. . As a result, the ink removal sheet 41 placed on the ink removal table 42 is maintained in a state where it can absorb the ink on the pad 31 . In this embodiment, the ink removing device 40 including the ink removing sheet supply mechanism 43 was illustrated, but the present invention is not limited to the one having this. For example, the ink removal sheet 41 may simply be placed on the ink removal table 42 .

[Control device]
2 to 4, the control device 60 controls the operations of the vulcanizing device 10, the mold support device 50, the ink supply device 20, the transfer device 30, and the ink removal device 40 in the mark printing system 100. It is provided as a device to As described above, the vulcanizing device 10 , the mold support device 50 , the ink supply device 20 , the transfer device 30 , and the ink removal device 40 operate based on control commands from the control device 60 .

The control device 60 includes a processor such as a CPU, a memory, an operation unit such as an operation panel or operation panel operated by a user, an interface circuit, and the like. The memory of the control device 60 stores a program for creating control commands for controlling the operations of the vulcanization device 10, the mold support device 50, the ink supply device 20, the transfer device 30, and the ink removal device 40. there is As the user operates the operation unit, the above program is read from the memory and executed by the processor. As a result, the above control command is created, and the vulcanizing device 10, the mold support device 50, the ink supply device 20, the transfer device 30, and the ink removal device 40 operate based on the control command.

[Each step of the mark printing method]
The mark printing method of this embodiment is executed by operating the mark printing system 100 described above. That is, the mark printing system 100 executes the vulcanization step S101, the ink supply step S102, and the transfer step S103 in the mark printing method of the present embodiment. An ink removing step S106 is performed. Each step of the mark printing method of the present embodiment executed by the operation of the mark printing system 100 will be described in more detail below.

[Vulcanization process]
The vulcanization step S101 is configured as a step of forming the transmission belt C by vulcanizing the unvulcanized rubber molding C2 in a state in which it is fitted in the mold unit 11 having the groove 14 on the outer periphery.

In the vulcanization step S101, the unvulcanized rubber molding C2 is fitted into each of the plurality of grooves 14 provided on the outer periphery of the mold unit 11. As shown in FIG. In addition, the unvulcanized rubber molded body C2 provided in an annular shape is fitted over the entire circumference in each groove 14 extending along the outer periphery of the mold unit 11, and is mounted along the outer periphery of the mold unit 11. be done. Specifically, when the ring molds 13 are stacked, one unvulcanized rubber molding C2 is fitted into the groove 14 for one ring mold 13, and by repeating this, the mold unit 11 A plurality of unvulcanized rubber moldings C2 are mounted.

When the unvulcanized rubber moldings C2 are respectively fitted into the plurality of grooves 14 on the outer periphery of the mold unit 11, a cylindrical rubber is formed around the mold unit 11 in which the plurality of unvulcanized rubber moldings C2 are fitted. A sleeve (not shown) is also attached. In the vulcanization step S101, as described above, the mold unit 11 and the unvulcanized rubber molded body C2 are accommodated in the vulcanization can 12 with the cylindrical rubber sleeve attached to the outer peripheral surface thereof, and the predetermined Vulcanization is performed under conditions such as a temperature of

[Ink supply process]
After the vulcanization step S101 is performed, the ink supply step S102 of forming the marks M in the mark forming unit 22 is performed in order to print the marks M on the transmission belt C1 after vulcanization. The ink supply step S102 is configured as a step of filling and supplying ink to the mark forming portion 22 that forms the marks M to be transferred onto the transmission belt C. As shown in FIG. The ink supply step S<b>102 is executed by supplying ink to the mark forming section 22 in the ink supply device 20 based on a control command from the control device 60 .

FIG. 9 is a diagram for explaining the mark forming unit 22 used in the mark printing method for the transmission belt. In the ink supply step S<b>102 , the pressing section 21 b presses the sponge unit 21 a holding the ink based on a command from the control device 60 to supply ink to the mark forming section 22 . Then, when the ink is supplied to the mark forming portion 22 having a region where marks M are formed, a plurality of marks M are formed. In FIG. 9, the ranges of the plurality of marks M formed in the mark forming section 22 are indicated by two-dot chain lines, and the ranges of the regions S in which the marks M are formed are indicated by dashed lines.

As shown in FIG. 9, the mark forming portion 22 has a region S in which marks M are formed. A plurality of marks M1 as a plurality of marks M to be transferred onto the plurality of transmission belts C are formed in the region S of the mark forming portion 22 .

In FIG. 9, the mark M1 formed in the area S is displayed as a mark M displaying, for example, the manufacturer's name and product brand name. In the mark M1, the manufacturing company name (the part made up of three star patterns) and the product brand name (the part made up of the characters "B-60") are both composed of the same pattern and characters. ) is displayed. In addition, the country of manufacture is displayed in the mark M2 formed in the area S.

The mark forming section 22 is configured so that a plurality of marks M1 and M2 are formed in the region S, as shown in FIG. It should be noted that part of the marks M1 and M2 formed in the region S is shown in FIG.

[Transfer process]
The transfer step S103 is a step in which the mark M is transferred by the pad 31 onto the vulcanized transmission belt C1. The transfer step S103 includes a first transfer step S104, a second transfer step S105, and an ink removal step S106. The first transfer step S104, the second transfer step S105, and the ink removal step S106 are performed by operating the vulcanization device 10, the transfer device 30, and the ink removal device 40 based on a control command from the control device 60. executed.

FIG. 10 is a diagram showing an example for explaining the operation of mark printing by the mark printing system 100 for the transmission belt, and is a diagram schematically showing a state in which the marks M are transferred to the transfer medium. The first transfer step S104 is a step in which the marks M printed on the vulcanized transmission belt C1 are transferred from the ink supply device 20 filled with ink to the pad 31 as a transfer medium. Specifically, in the first transfer step S104, the drive mechanism of the transfer device 30 is driven so that the pad 31 is pressed onto the mark forming section 22 filled with ink and moved on the mark forming section 22 so as to rotate. It is done by being done. In the first transfer step S<b>104 , a plurality of marks M are transferred to the pad 31 when the pad 31 rotates while being pressed against the mark forming section 22 . When a plurality of ink supply devices 20 are used simultaneously in the mark printing system 100 for the transmission belt, in the first transfer step S104, the pad 31 is pushed.

When the pad 31 is pressed against the mark forming portion 22 in the first transfer step S104, first, a portion of the peripheral surface of the columnar body portion 33 of the pad 31 is pressed against a partial region of the mark forming portion 22. . The pad driver 32 drives the pad 31 to move in the horizontal direction. At this time, the pad 31 rotates while being pressed against the mark forming portion 22 and moves on the area S of the mark forming portion 22 to transfer the mark M to the pad 31 . That is, in the first transfer step S104, each of the marks M1 and M2 formed on the mark forming portion 22 is transferred by the pad 31 rotating once.

After the mark M is transferred to the pad 31 , the pad 31 is moved from the ink supply device 20 to the vulcanization device 10 . Movement of the pad 31 from the ink supply device 20 to the vulcanization device 10 is performed by a drive mechanism provided in the pad drive section 32 . The pad 31 on which the marks M have been transferred by the first transfer step S104 first moves upward away from the ink supply device 20 and moves above the transmission belt C held by the mold unit 11. do. Then, the pad 31 descends toward the vulcanized power transmission belt C<b>1 held by the mold unit 11 . As a result, the columnar body portion 33 of the pad 31 is pressed against the outer peripheral surface of the plurality of vulcanized transmission belts C<b>1 held by the mold unit 11 .

FIG. 11 is a diagram showing an example for explaining the operation of mark printing by the mark printing system 100 for the transmission belt, and is a diagram schematically showing the mold unit held by the mold support device together with the transfer device 30. FIG. is. FIG. 12 is a diagram showing an example for explaining the operation of mark printing by the mark printing system 100 for the transmission belt, and schematically showing a state in which the mark M is transferred to the transmission belt C1 after vulcanization. is. The second transfer step S105 is performed following the first transfer step S104. In the second transfer step S105, the pad 31 to which the mark M has been transferred in the first transfer step S104 is pressed against the transmission belt C held in the mold unit 11 in a vulcanized state, whereby the mark M is transmitted. This is the step of transferring to the belt C. Specifically, in the second transfer step S105, in the transfer device 30, the pad driving unit 32 drives so as to press the pad 31 as the transfer medium against the vulcanized transmission belt C1 held in the mold unit 11. It is executed by letting

In the second transfer step S105, the columnar body portion 33 of the pad 31 is placed above the mold unit 11 in which the transmission belt C is fitted, and then pressed against the transmission belt C. As shown in FIG. Then, the mold unit 11 is rotationally driven by the drive motor 16 while the cylindrical main body portion 33 is being pressed. At this time, the plurality of marks M transferred to the pad 31 in the first transfer step S104 are transferred to the transmission belt C1 held by the mold unit 11. FIG. The second transfer step S105 is executed by operating the mold support device 50 and the transfer device 30 based on a control command from the control device 60. FIG.

For example, in the second transfer step S105, when the pad 31 is pressed against the transmission belt C held by the mold unit 11, first, the pad 31 is positioned above the mold unit 11 and the mold unit 11 rotates. The shaft is arranged so as to be parallel to the pad rotation axis 34 . Then, the pad 31 is pressed against a partial area on the outer peripheral side of the vulcanized power transmission belt C<b>1 held by the mold unit 11 . At this time, the transmission belt C<b>1 after vulcanization is rotated together with the mold unit 11 and the mark M is transferred by the pad 31 . The marks M printed on the transmission belt C1 after vulcanization in the transfer step S103 are accelerated to dry by the heat applied in the vulcanization step S101, so that they are naturally dried without going through a separate drying step. .

[Ink removal process]
The ink removing step S106 is a step of removing the mark M from the pad 31. When the mark M transferred to the unvulcanized rubber molding C2 is switched, the ink impregnated in the pad 31 is absorbed. It is configured as a step of removing. The ink removing step S106 is executed by operating the transfer device 30 and the ink removing device 40 based on a control command from the control device 60 .

In the ink removing step S<b>106 , first, in the ink removing device 40 , the ink removing sheet 41 on which the ink has not been absorbed is placed on the ink removing table 42 . In this state, the pad 31 of the transfer device 30 is pressed against the ink removal sheet 41 placed on the ink removal table 42 . Next, while the pad 31 is still pressed against the ink removal sheet 41, the ink removal sheet supply mechanism 43 operates to supply the ink removal sheet onto the ink removal table 42 and wind it up. At this time, in the ink removing device 40 , the portion of the ink removing sheet 41 that has not absorbed ink is supplied onto the ink removing table 42 , and the portion of the ink removing sheet 50 that has absorbed ink is transferred to the ink removing sheet supply mechanism 43 . be wound up. On the other hand, the pad 31 pressed against the ink removing sheet 41 rotates and the ink is absorbed by the ink removing sheet 41 .

As described above, in the transfer step S103, the first transfer step S104, the second transfer step S105, and the ink removal step S106 are repeated as appropriate, so that a plurality of types of marks are formed on the vulcanized transmission belt C1. M is printed.

[Cooling process]
The cooling step S107 is a step of cooling the vulcanized transmission belt C1 onto which the marks M have been transferred in the second transfer step S106. In the cooling step S107, the transmission belt C1 after vulcanization is cooled together with the transferred marks M. As shown in FIG.

A first transfer step S104, a second transfer step S105, and an ink removal step S106 are performed, and when the transfer step S103 ends, the printing of the marks M on the transmission belt C ends, and the mark printing method of the present embodiment ends. will do.

[Actions and effects of the present embodiment]
According to the transmission belt mark printing method of the present embodiment, the mark M transferred to the pad 31 in the first transfer step S104 is transferred onto the vulcanized transmission belt C1 held in the mold unit 11. . That is, according to the above configuration, in printing the mark on the transmission belt C, the mark M is printed on the base material composed of the film, the base material is superimposed on the unvulcanized rubber belt, and the base material is further superimposed. By vulcanizing the rubber belt, the conventional process of transferring the mark M to the transmission belt C by heat welding during vulcanization is completely eliminated. Therefore, according to the above configuration, the conventional work requiring a lot of work time, such as arranging a large number of substrates on which the marks M are printed on a narrow rubber belt, becomes unnecessary, and the work time can be shortened. Further, as described above, since the mark M can be transferred to the transmission belt C while it is held by the mold unit 11 after vulcanization, the working time can be shortened. When the marks M are transferred to the transmission belt C, it is conceivable that the transmission belt C is removed from the mold, conveyed to a place where the transfer is performed, and the marks M are transferred to the conveyed transmission belt C. In this case, it is necessary to remove the transmission belt C from the mold, transport it to a transfer location, and align it. However, according to the transmission belt mark printing method, it is not necessary to remove the transmission belt C, convey it to a transfer location, and align it. Therefore, it is possible to further shorten the working time for printing marks on the transmission belt C. FIG.

Further, according to the method of printing marks on the transmission belt of the present embodiment, in the first transfer step S104, the mark M printed on the transmission belt C is transferred to the pad 31 as the transfer medium, and then the mark M is transferred to the pad 31 as the transfer medium in the second transfer step S105. , the mark M transferred to the pad 31 in the first transfer step S104 is transferred to the transmission belt C in a vulcanized state. That is, the mark M is transferred using the pad 31 as a transfer medium for transferring the mark M. FIG. Therefore, according to the above-described mark printing method for the transmission belt, there is no need to print the mark M using the base material as in the conventional art, and the pad 31 is used as a transfer medium to transmit the mark M transferred to the pad 31. The mark M can be printed on the transmission belt C only by pressing it against the belt C. - 特許庁As a result, the marks M can be continuously and easily printed on the transmission belt C, and the working time for printing can be shortened.

Further, according to the method of printing marks on the transmission belt of the present embodiment, since it is not necessary to arrange the base material composed of the film on the transmission belt C, when arranging the base material on the transmission belt C, the arrangement direction or the arrangement position There is no work mistake such as mistakenly. In addition, since the base material is not used in the first place, there is no problem in displaying the mark on the transmission belt C when the film as the base material is wrinkled, bent, or distorted.

Furthermore, according to the mark printing method for the transmission belt of the present embodiment, since the film as the base material is not used, the work time for peeling the film from the vulcanized transmission belt C1 is not necessary, and the work time for printing is eliminated. can be shortened.

Therefore, according to this embodiment, it is possible to provide a method for printing marks on the transmission belt, which can shorten the work time for printing marks on the transmission belt C. FIG.

Further, according to the method for printing marks on the transmission belt of the present embodiment, in addition to the vulcanization step S101, the first transfer step S104, and the second transfer step S105, the cooling step S107 is performed on the transmission belt C onto which the marks M have been transferred. performed for That is, the second transfer step S105 in which the marks M are transferred to the transmission belt C is performed before the vulcanized transmission belt C1 is cooled. For this reason, the marks M are transferred to the transmission belt C which is still hot after vulcanization, and the drying of the marks M is accelerated. That is, the heat applied to the transmission belt C during vulcanization can be effectively used, and the marks M transferred to the transmission belt C can be dried in a short time. Furthermore, when the marks M are printed after the vulcanized power transmission belt C is cooled, a separate drying step for the marks M is required, but such a step is not required.

Further, according to the method for printing marks on the transmission belt of the present embodiment, the rotation of the transmission belt C can be performed by rotating the mold unit 11 . A columnar main body 33 rotatably provided around a pad rotating shaft 34 extending parallel to the rotating shaft of the mold unit 11 is pressed against the revolving transmission belt C. As shown in FIG. Therefore, the marks M can be efficiently transferred to the entire circumference of the transmission belt C while rotating the mold unit 11 together with the transmission belt C. As a result, the work time required for printing marks on the transmission belt C can be further shortened.

According to the mark printing system 100 for the transmission belt C of the present embodiment, the mark M transferred to the pad 31 is transferred to the vulcanized transmission belt C<b>1 held by the mold unit 11 . That is, in the above-described mark printing system 100 for the transmission belt, the conventional process of transferring the mark M to the transmission belt C using a base material made of film is completely unnecessary. Therefore, according to the transmission belt mark printing system 100, the conventional work of arranging a large number of substrates on which the marks M are printed on a narrow rubber belt, which requires a lot of work, becomes unnecessary, and the work time is shortened. be able to. Further, since the mark M can be transferred to the transmission belt C that is still held by the mold unit 11 after vulcanization, the working time can be shortened. When transferring the mark M to the transmission belt C, it is conceivable that the transmission belt C is removed from the mold, conveyed, and the mark M is transferred to the conveyed transmission belt C. FIG. In this case, it is necessary to remove the transmission belt C from the mold, transport it to a transfer location, and align it. However, according to the transmission belt mark printing system 100, it is not necessary to remove the transmission belt C, convey it to a transfer location, and align it. Therefore, it is possible to further shorten the working time for printing marks on the transmission belt C. FIG.

Further, according to the transmission belt mark printing system 100 of the present embodiment, the mark M is transferred to the vulcanized transmission belt C<b>1 by the pad 31 and the pad driving section 32 that drives the pad 31 . That is, the pad 31 is moved by the driving force of the pad driving section 32, the mark M formed in the mark forming section 22 is transferred to the pad 31, and furthermore, the power transmission held in the mold unit 11 in a vulcanized state. The mark M transferred to the pad 31 is transferred to the belt C. As shown in FIG. Therefore, according to the mark printing system 100 for the transmission belt, it is not necessary to print the mark M using a base material as in the conventional art, and the pad 31 is used as a transfer medium and is driven by the pad driving section 32, and the pad The mark M can be printed on the transmission belt C only by pressing the mark M transferred to 31 against the transmission belt C. - 特許庁As a result, the marks M can be continuously and easily printed on the transmission belt C, and the working time for printing can be shortened.

In addition, according to the transmission belt mark printing system 100 of the present embodiment, since it is not necessary to arrange the base material composed of the film on the transmission belt C, when arranging the base material on the transmission belt C There is no need to make a mistake in the work such as mistaking the place. In addition, since the base material is not used in the first place, there is no problem in displaying the mark on the transmission belt C when the film as the base material is wrinkled, bent, or distorted.

Furthermore, according to the transmission belt mark printing system 100 of the present embodiment, since the film as the base material is not used, the work time required for peeling off the film from the vulcanized transmission belt C1 is not necessary, and the work at the time of printing is eliminated. can save time.

Therefore, according to the transmission belt mark printing system 100, the work time for printing the mark on the transmission belt C can be shortened.

[Modification]
Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and can be implemented with various modifications within the scope of the claims. For example, the following modifications may be implemented.

(1) In the above-described embodiment, the mold unit 11 is installed with its rotational axis parallel to the rotational axis of the pad 31 provided to span between the pair of guide portions 35, 35. Although the description is given as an example of the case where the For example, the mold unit 11 may have its rotating shaft installed in the vertical direction. In this case, the pad 31 for transferring the mark M to the vulcanized transmission belt C1 held by the mold unit 11 is also set in the vertical direction, that is, in the direction parallel to the rotation axis of the mold unit 11. be done. At this time, the mold support device 50 rotatably supports the mold unit 11 while holding it in the vertical direction.

(2) In the above-described embodiment, in the cooling step S107, the vulcanized transmission belt C1 to which the marks M have been transferred is cooled by natural drying, but this need not be the case. For example, the cooling step S<b>107 may be performed by the cooling device 70 that sprays a cooling medium onto the vulcanized transmission belt C<b>1 onto which the mark M has been transferred by the pad 31 . The cooling medium for cooling the vulcanized transmission belt C1 onto which the marks M have been transferred may be, for example, air or water.

(3) In the above-described embodiment, the mold support device 50 is provided at a location separate from the vulcanization device 10, but this need not be the case. For example, the mold support device 50 may be configured to be incorporated in the vulcanization can 12 .

[Example]
An example in which marks Q are printed on the vulcanized power transmission belt C1 by the mark printing system 100 according to the embodiment of the present invention will be described below. Further, in the examples, the printed finished state of the power transmission belt C1 was evaluated.

FIG. 13 is a table for explaining the transfer step S103 for printing the marks Q on the transmission belt C1 in the embodiment. In the evaluation of the finished state of printing of the marks Q on the transmission belt C1, a B-shaped wrapped V-belt, which is one of the types defined by JIS, was used as a printing target. Specifically, a transmission belt C1 having dimensions of 3048.0 mm in length, 11.0 mm in thickness, and 16.5 mm in depth was used as an object to be printed. The length of the transmission belt C1 is the length of the annular transmission belt C1 in the circumferential direction. The thickness dimension of the power transmission belt C1 is the dimension in the direction from the inner peripheral side to the outer peripheral side of the power transmission belt C1 and from the outer peripheral side to the inner peripheral side. The depth dimension of the transmission belt C<b>1 is the dimension in the direction parallel to the axial direction of the annular transmission belt C<b>1 held by the mold unit 11 .

In the production of the power transmission belt C1 according to the embodiment, as marks printed on the power transmission belt C1, there are, for example, marks indicating six types of product information including the product brand name, country of origin, specifications, product standards, and the like. Q (Q1, Q2, Q3, Q4, Q5, Q6) were used. Although white or red was used as the color of each mark Q1, Q2, Q3, Q4, Q5, and Q6, the same color was used for each of the six types of marks Q1, Q2, Q3, Q4, Q5, and Q6. Alternatively, all six different colors may be used.

In the production of the transmission belts C1 according to the examples, 15 transmission belts C1 held in the mold unit 11 in a vulcanized state were printed, and then vulcanized. The procedure of printing on another 15 non-printed transmission belts C1 was repeated eight times in total. In other words, the total number of transmission belts C1 on which all the marks Q1, Q2, Q3, Q4, Q5 and Q6 have been transferred is 120 pieces. The marks Q1, Q2, Q3, Q4, Q5, and Q6 are printed on the transmission belt C1 by dividing the transfer operation of the marks Q1, Q2, and Q3 into the transfer operation of the marks Q4, Q5, and Q6. 31 was carried out for 15 transmission belts C1.

Also, the transmission belt C1 according to the example was produced in the transfer step S103, which is a combination of the first transfer step S104, the second transfer step S105, and the ink removal step S106. Incidentally, prior to the transfer step S103, trial printing was performed to confirm the state of transfer of the marks Q1, Q2, Q3, Q4, Q5, and Q6 to the pad 31. FIG. In test printing, marks Q1, Q2, Q3, Q4, Q5, and Q6 formed in the mark forming section 22 of the ink supply device 20 are transferred to the pad 31, and then the marks Q1, Q2, This was done by pressing Q3, Q4, Q5 and Q6 against the ink removing sheet 41. FIG. The printed states of the marks Q1, Q2, Q3, Q4, Q5, and Q6 transferred by being pressed against the ink removing sheet 41 were visually checked. The specific transfer step S103 will be described below.

The upper part of FIG. 13 shows, for example, the transfer step S103 of printing three marks Q1, Q2, and Q3 out of the six marks Q1 to Q6 on the transmission belt C1. The printed mark Q1 is a white mark indicating the product brand name of the power transmission belt C1, the printed mark Q2 is a white mark indicating the specifications of the power transmission belt C1, and the printed mark Q3 is the product of the power transmission belt C1. It is a white mark that indicates the standard. In the transfer step S103 of the marks Q1, Q2, and Q3, the marks Q1, Q2, and Q3 formed in the mark forming section 22 of the ink supply device 20 are transferred to the pad 31 as the first transfer step S104, and then transferred to the second transfer step S104. In S105, the marks Q1, Q2, and Q3 transferred to the pad 31 are transferred to a plurality of transmission belts C1 held by the mold unit 11. FIG. In the second transfer step S105, the marks Q1, Q2, and Q3 were transferred to the 15 transmission belts C1 for each transfer operation. After the marks Q1, Q2 and Q3 were transferred to the transmission belt C1 in the second transfer step S105, the pad 31 was pressed against the ink removing sheet 41 to perform the ink removing step S106.

The lower part of FIG. 13 shows, for example, the transfer step S103 of printing the remaining three marks Q4, Q5 and Q6 out of the six marks Q1 to Q6 on the transmission belt C1. The printed mark Q4 is a red English letter mark indicating information about the product as the power transmission belt C1, the printed mark Q5 is a red mark indicating the country of manufacture of the power transmission belt C1, and the printed mark Q6 is: It is a red number mark that displays information about the product as the power transmission belt C1. In the transfer step S103 of the marks Q4, Q5, and Q6, similarly to the marks Q1, Q2, and Q3, the marks Q4, Q5, and Q6 formed in the mark forming portion 22 are transferred to the pad 31 as the first transfer step S104. As a second transfer step S105, the marks Q4, Q5, Q6 transferred to the pad 31 are transferred to a plurality of transmission belts C1 held by the mold unit 11. As shown in FIG. In the second transfer step S105, the marks Q4, Q5, and Q6 were transferred to the 15 transmission belts C1 for each transfer operation. After the marks Q4, Q5 and Q6 were transferred to the transmission belt C1 in the second transfer step S105, the ink removing step S106 was performed.

After printing the marks Q1, Q2, Q3, Q4, Q5, and Q6 on the 15 transmission belts C1 held by the die unit as described above, the same operation is repeated seven times, and the total number of marks is 120. Each of the marks Q1, Q2, Q3, Q4, Q5, and Q6 was printed on the transmission belt C1.

FIG. 14 is a table showing a list of evaluation items and evaluation results for the printed state of the marks Q on the transmission belt C1 printed in the example. The marks Q1, Q2, Q3, Q4, Q5, and Q6 printed on the transmission belt C1 were visually evaluated for the printing finish. Specifically, as evaluation items, the presence or absence of defects related to the printing position, such as misalignment and inclination of the transferred marks Q, and variations in the intervals between the marks Q, is evaluated, and print quality such as blurring, blurring, and peeling is evaluated. Evaluation was also made on the presence or absence of defects related to As shown in FIG. 14, the evaluation results show the number of defects with respect to the total number of 120 transmission belts C1 printed with marks Q1, Q2, Q3, Q4, Q5, and Q6.

As a result of printing the marks Q1, Q2, Q3, Q4, Q5, and Q6 on the 120 transmission belts C1 described above, the deviations and inclinations of the marks Q1, Q2, Q3, Q4, Q5, and Q6 are I didn't. Moreover, there was no variation in the intervals between the marks Q. Further, the marks Q1, Q2, Q3, Q4, Q5, and Q6 did not bleed, fade, or come off. That is, in all the evaluation items, the number of defective occurrences out of 120 total number is 0, and the 6 types of marks Q1, Q2, Q3, Q4, Q5, and Q6 are good for all 120 transmission belts C1. I was able to print in good condition. Therefore, it was confirmed that the mark Q could be printed unattended without any trouble by the above-described mark printing system 100 for the transmission belt in which the printing process was automated.

INDUSTRIAL APPLICABILITY The present invention can be widely applied to a power transmission belt mark printing method, which is a method of printing marks on a power transmission belt, and a power transmission belt mark printing system for printing marks on a power transmission belt.

10 Vulcanizing device 11 Mold unit 13 Ring-shaped mold (ring mold)
14 Groove 20 Ink supply device 21 Ink holding unit 22 Mark forming unit 30 Transfer device 31 Pad 32 Pad driving unit 33 Columnar main body 34 Pad rotating shaft 100 Transmission belt mark printing system C Transmission belt C1 Vulcanized transmission belt ( transmission belt in vulcanized state)
C2 Unvulcanized rubber molding (unvulcanized transmission belt)
M mark S101 vulcanization step S104 first transfer step S105 second transfer step S107 cooling step

Claims (3)

A plurality of unvulcanized annular transmission belts are vulcanized in a state in which a plurality of unvulcanized annular transmission belts are fitted in grooves on the outer peripheral side of a mold unit configured by stacking a plurality of ring-shaped molds. a sulfuric process;
a first transfer step in which marks printed on the transmission belt are transferred from an ink supply device filled with ink to a pad as a transfer medium;
The mark is transferred to the transmission belt by pressing the pad onto which the mark has been transferred in the first transfer step against the transmission belt held in the mold unit in a vulcanized state. 2 a transfer step ,
The pad has the mark transferred from the ink supply device in the first transfer step, and has a columnar main body provided rotatably around a pad rotation axis extending parallel to the rotation axis of the mold unit. have
In the second transfer step, the mark is transferred to the transmission belt fitted in the mold unit by rotating the mold unit while the pad is pressed against the transmission belt. , a method of printing a mark on a power transmission belt. A mark printing method for a transmission belt according to claim 1,
Further comprising a cooling step of cooling the transmission belt after vulcanization ,
The second transfer step of transferring the mark to the transmission belt is performed before the vulcanized transmission belt is cooled in the cooling step,
A power transmission belt characterized by drying the mark transferred to the power transmission belt by the heat applied to the power transmission belt during vulcanization by performing the second transfer step before the cooling step. mark printing method. A mark printing system for a power transmission belt, comprising:
A vulcanizing device for vulcanizing a plurality of unvulcanized transmission belts, an ink supply device filled with ink to form marks printed on the transmission belts, and the marks on the vulcanized transmission belts. and a transfer device that transfers the
The vulcanizing device has a mold unit in which grooves are formed on the outer peripheral side by stacking ring-shaped molds, and grooves are formed in which a plurality of unvulcanized annular transmission belts are fitted,
The ink supply device has an ink holding section that holds the filled ink, and a mark forming section that forms the mark by supplying the ink from the ink holding section,
The transfer device movably holds a pad as a transfer medium to which the mark formed in the mark forming section is transferred, and the pad held in the mold unit in a vulcanized state. a pad driving unit for driving the pad so as to transfer the mark transferred to the pad to the transmission belt ;
The mark printing system further comprises a mold support device that rotatably supports and rotationally drives the mold unit,
The pad has a columnar main body on which the mark is transferred from the ink supply device and is rotatable around a pad rotation axis extending parallel to the rotation axis of the mold unit,
The mold supporting device rotates the mold unit in a state in which the pad driving unit presses the pad against the transmission belt fitted in the mold unit, so that the mark is formed on the transmission belt. A mark printing system for a transmission belt, characterized in that it is transferred .

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