JP2023039863A - Tension adjustment device, transfer apparatus, tire component manufacturing device, tire manufacturing apparatus, tension adjustment method, transfer method, tire component manufacturing method, tire manufacturing method, and program - Google Patents

Abstract

To provide a material transferring apparatus that suppresses tension fluctuations and maintains high-precision tension.SOLUTION: A tension adjusting apparatus of the invention comprises: a pair of support rollers for supporting a material to be transferred; a push roller that pushes the material in the direction intersecting with the transferring direction of the material when viewed from the axial direction of the support roller between the pair of support rollers; a measuring part that measures the load that the push roller pushes the material; a driving part that drives the push roller; and a control part that controls the driving part so that the load becomes a target load range based on the measurement result of the measuring part.SELECTED DRAWING: Figure 1

Description

The present invention relates to a tension adjusting device, a conveying device, a tire component manufacturing device, a tire manufacturing device, a tension adjusting method, a conveying method, a tire component manufacturing method, a tire manufacturing method, and a program.

The following documents are known as adjustment devices and adjustment methods for maintaining tension in conveyed materials.

For example, Patent Literature 1 discloses a delivery pulley 21 around which a wire is wound, a servomotor 22 that rotationally drives the delivery pulley 21 to deliver the wire on the upstream side to the downstream side, and a feeder downstream of the delivery pulley 21 . A tension detection unit 50 is arranged on the downstream side and detects the tension of the wire pulled out from the downstream side, and a movement of the wire pulled out from the downstream side is arranged downstream of the delivery pulley 21. A wire rod tension adjusting device including a speed detection unit 40 for detecting speed is disclosed. In this device, the rotation speed of the servomotor 22 is controlled based on the moving speed of the wire detected by the speed detection unit 40, and the rotation speed of the servomotor 22 is corrected based on the tension of the wire detected by the tension detection unit 50. By doing so, the tension of the wire delivered from the delivery pulley 21 is adjusted.

Japanese Patent No. 5308860

In a system that conveys materials, it is possible to match the peripheral speed of the upstream driving roller (which may be the unwinding drum) and the downstream driving roller (which may be the winding drum), that is, to keep the line speed constant. desirable. However, it is practically difficult to match the above speeds due to mechanical vibrations, variations in core (drum) rotation, and the like. More specifically, the power source for the drive roller is a motor. What you want to control is the surface speed of the drive roller or drum, but what you are actually controlling is the motor. Therefore, since the mechanical load to be driven differs for each motor, it is difficult to equalize the surface speed. It is difficult to keep the surface velocity constant. Furthermore, since the motor and the driven object are connected by the mechanical shaft, torsional vibration is generated mainly due to the torsional rigidity of the connecting shaft.

Therefore, tension is generated between the upstream driving roller and the downstream driving roller, and the tension is controlled by a dancer arm.

In the configuration described in Patent Literature 1 described above, the wire rod slackness absorbing portion 30 is of a dancer arm type. Adjusting the tension of W. However, in this configuration, when the temperature of the servomotor rises, the torque output from the servomotor changes.

In general, each servomotor has an individual difference in output torque, and the torque loss due to the speed reducer, bearing, etc. of the servomotor changes depending on the temperature. For this reason, in the feedback control in which only the torque output from the servomotor is used for control comparison, there is a problem that the load for pulling the wire is not constant and the tension of the wire fluctuates.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a material conveying apparatus capable of adjusting the tension of a material to be conveyed with high precision and suppressing tension fluctuations.

The tension adjusting device of the first aspect comprises a pair of support rollers that support a material to be conveyed, and between the pair of support rollers, the material is stretched so as to cross the conveying direction of the material when viewed from the axial direction of the support rollers. a pressing roller that pushes in a direction, a measuring unit that measures the load that the pressing roller presses against the material, a driving unit that drives the pressing roller, and the load that is within a target load range based on the measurement result of the measuring unit. and a control unit that controls the driving unit so as to control the driving unit.

A tension adjusting device according to a second aspect is the tension adjusting device according to the first aspect, wherein the pressing roller includes a roller in contact with the material, a roller rotatably supporting the roller at one end, and an axial direction of the roller. and an arm rotatably supported at the other end side about an axis extending along the direction of the dancer arm, wherein the drive unit rotates the arm of the dancer arm, and the measurement unit rotates the dancer arm. Measure the resulting torque.

According to a third aspect of the invention, in the tension adjusting device according to the second aspect, the dancer arm further has a counterweight on the opposite side of the roller from the shaft.

A tension adjusting device according to a fourth aspect is the tension adjusting device according to the second aspect or the third aspect, wherein the controller stores a correspondence relationship between the angle of the dancer arm and the tension generated in the material to be conveyed. and correcting the torque output by the drive unit based on the correspondence stored in the storage unit.

The tension adjusting device of the fifth aspect is the tension adjusting device according to the second aspect or the third aspect, wherein the tension measuring the tension generated in the material conveyed downstream in the conveying direction of the material with respect to the support roller A measuring unit is further provided, and the control unit corrects the torque output by the driving unit based on the result obtained from the tension measuring unit.

A tension adjusting device according to a sixth aspect is the tension adjusting device according to the first aspect, wherein the pressing roller comprises a roller in contact with the material and a linear motion body that rotatably supports the roller and linearly moves in the cross direction. wherein the measurement unit measures the load that the linear motion member receives from the material.

A tension adjusting device according to a seventh aspect is the tension adjusting device according to the sixth aspect, wherein the pair of support rollers are arranged so that the angle range in which the material is wrapped around the rollers of the linear motion member is 180°. It is

The tension adjusting device of the eighth aspect is the tension adjusting device of any one aspect of the second to sixth aspects, and is arranged upstream with respect to the pair of support rollers in the conveying direction of the material, and the conveying force is applied to the material. and the control unit controls the speed at which the material is conveyed by the conveying unit so that the angle of the dancer arm or the position of the roller constituting the direct-acting member is constant.

The conveying device of the ninth aspect includes an unwinding section for unwinding the material, a winding section for winding the material, and a path along which the material is conveyed from the unwinding section to the winding section. and a tension adjusting device according to any one of the first to seventh aspects.

The tire component manufacturing apparatus of the tenth aspect is characterized in that the material is a tire member, an unwinding portion that unwinds the tire member, a winding portion that winds the tire member, and the tire member comprises: and a tension adjusting device according to any one of the first to seventh aspects, which is provided in the middle of the path conveyed from the unwinding section to the winding section.

In the tire manufacturing apparatus of the eleventh aspect, the material is a tire member, the unwinding portion for unwinding the tire member, the winding portion for winding the tire member, and the tire member A tension adjusting device according to any one of the first to seventh aspects provided in the middle of a route conveyed from an unwinding section to the winding section, and processing a tire component obtained from the tire member into a tire. and a tire building apparatus.

In the tension adjustment method of the twelfth aspect, a material to be conveyed is supported by a pair of support rollers, and between the pair of support rollers, the material is stretched in the direction of conveyance of the material when viewed from the axial direction of the support rollers. A pressure roller driven by a drive unit in the cross direction pushes the material, the load that the push roller presses the material is measured by the measurement unit, and the load is controlled to fall within the target load range based on the measurement result of the measurement unit. controlling the drive with a unit.

A tension adjusting method of a thirteenth aspect is the tension adjusting method according to the twelfth aspect, wherein the pressing roller includes a roller in contact with the material and a roller rotatably supporting the roller at one end side and along the roller. and an arm rotatably supported at the other end side about a direction in which the dancer arm extends, wherein the driving section rotates the arm of the dancer arm, and the measuring section is generated in the dancer arm. Measure torque.

According to a fourteenth aspect of the invention, in the tension adjusting method according to the twelfth aspect, the pressing roller comprises a roller in contact with the material and a linear motion body that rotatably supports the roller and linearly moves in the cross direction. and the measurement unit measures the load that the linear motion member receives from the pressing roller.

In the conveying method of the fifteenth aspect, the material is unwound by an unwinding section, the material is wound by a winding section, and the material is conveyed from the unwinding section to the winding section. It includes controlling the tension by the tension adjusting method of any one of the twelfth to fourteenth aspects.

In the tire component manufacturing method of the sixteenth aspect, the material is a tire member, the tire member is unwound by an unwinding section, the tire member is wound by a winding section, and the tire member is includes the tension adjusting method of any one of the twelfth to fourteenth aspects in the middle of the route conveyed from the unwinding section to the winding section.

In the tire manufacturing method of the seventeenth aspect, the material is a tire member, the tire member is unwound by an unwinding section, the tire member is wound by a winding section, and the tire member is Processing a tire component obtained by the tension adjusting method according to any one of the twelfth to fourteenth aspects into a tire by a tire molding machine on the way from the unwinding section to the winding section. including.

The program of the eighteenth aspect causes the computer to function as a control section of the tension adjusting device of any one aspect from the first aspect to the seventh aspect.

According to the tension adjusting device of the first aspect, the measuring unit measures the load of the pressing roller pressing the material, and the control unit controls the driving unit so that the load falls within the target load range based on the measurement result of the measuring unit. . Therefore, in the process of conveying the material, variations in tension occurring in the material can be reduced compared to the case where the load of the pressing roller pressing the material is not measured.

According to the tension adjusting device of the second aspect, the tension adjusting device according to the invention of the first aspect has the dancer arm that rotates and the measuring section that measures the torque generated in the dancer arm. can be achieved.

According to the tension adjustment device of the third aspect, since the tension adjustment device of the second aspect further includes the counterweight, the rated capacity of the motor that drives the dancer arm to rotate can be made smaller.

According to the tension adjusting device of the fourth aspect, the tension adjusting device according to the second aspect or the third aspect further has a storage unit that stores the correspondence relationship. Therefore, by varying the torque output by the motor that rotates the dancer arm in accordance with the angle at which the dancer arm is rotationally driven, the tension variation of the material can be further reduced.

According to the tension adjusting device of the fifth aspect, in the tension adjusting device of the second aspect or the third aspect, since it further has the tension measuring part, even if the angle of the dancer arm changes, the tension fluctuation of the material can be measured. can be further reduced.

According to the tension adjusting device of the sixth aspect, the tension adjusting device according to the invention of the first aspect has the linear motion member that moves linearly and the measurement unit that measures the load that the linear motion member receives from the material. , can be achieved by a linear motion member.

According to the tension adjusting device of the seventh aspect, in the tension adjusting device of the sixth aspect, since the angle range in which the material is wrapped around the roller is arranged to be 180 °, the bending posture of the material is constant, The tension generated in the material can be controlled with higher precision.

According to the tension adjusting device of the eighth aspect, the angle of the dancer arm or the roller position of the direct-acting member becomes constant depending on the transport speed of the transport section, so the bending attitude of the material becomes constant, and the tension generated in the material can be adjusted with higher accuracy. can be controlled.

According to the conveying device of the ninth aspect, it has the tension adjusting device of any one aspect of the first to seventh aspects. Therefore, the material can be transported while reducing variations in the tension generated in the material, compared to the case where the pressure roller does not measure the load that presses the material.

According to the tire component manufacturing apparatus of the tenth aspect, it has the tension adjusting device of any one aspect of the first aspect to the seventh aspect. Therefore, the tire member can be manufactured while reducing fluctuations in the tension generated in the material, as compared with the case where the pressure roller does not measure the load that presses the material.

According to the tire manufacturing apparatus of the eleventh aspect, it has the tension adjusting device of any one aspect of the first aspect to the seventh aspect. Therefore, compared with the case where the long press roller does not measure the load that presses the material, it is possible to manufacture the tire while further reducing the variation in the tension generated in the material.

According to the tension adjustment method of the twelfth aspect, the measuring unit measures the load that the push roller presses against the material, and the control unit controls the driving unit so that the load falls within the target load range based on the measurement result of the measuring unit. do. Therefore, in the process of conveying the material, variations in tension occurring in the material can be reduced compared to the case where the load of the pressing roller pressing the material is not measured.

According to the tension adjustment method of the thirteenth aspect, since the dancer arm is rotationally driven and the measuring unit measures the torque generated in the dancer arm, the dancer arm is rotationally driven in the tension adjustment method according to the invention of the twelfth aspect. achieved by

According to the tension adjustment method of the fourteenth aspect, the tension adjustment method according to the invention of the twelfth aspect has the linear motion member that moves linearly and the measurement unit that measures the load that the linear motion member receives from the material. This is achieved by a linear motion member that linearly moves the device.

According to the transportation method of the fifteenth aspect, since it includes the unwinding part, the winding part, and the tension adjustment method according to any one aspect of the twelfth aspect to the fourteenth aspect, in the material The variation in tension that occurs can be reduced compared to not measuring the load with which the push roller pushes the material.

According to the tire component manufacturing method of the sixteenth aspect, the unwinding portion for unwinding the tire member, the winding portion for winding the tire member, and any one of the twelfth to fourteenth aspects. and a tension adjustment method as described. As a result, variations in tension in the material can be reduced compared to not measuring the load with which the push roller pushes the material.

According to the tire manufacturing method of the seventeenth aspect, any one of the unwinding portion for unwinding the tire member, the winding portion for winding the tire member, and the twelfth to fourteenth aspects. and a molding apparatus for processing a tire component obtained from a tire member into a tire. As a result, variations in tension in the material can be reduced compared to not measuring the load with which the push roller pushes the material.

According to the program of the eighteenth aspect, in order to control the driving part so that the load is within the target load range based on the measurement result of the measuring part, the computer is set to any one aspect from the first aspect to the seventh aspect. It functions as a control section of the described tension adjusting device.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure explaining the tire component manufacturing apparatus which concerns on 1st embodiment. It is a figure explaining the tension adjustment device of the tire component manufacturing apparatus which concerns on 1st embodiment. It is a figure explaining the tire molding apparatus of the tire component manufacturing apparatus which concerns on 1st embodiment. It is a figure explaining the hardware constitutions of the control part which concerns on 1st embodiment. It is a figure explaining operation|movement of the tension adjustment apparatus of the tire component manufacturing apparatus which concerns on 1st embodiment. It is a figure explaining the relationship between the angle of the dancer arm of the tension adjustment apparatus of the tire component manufacturing apparatus which concerns on 1st embodiment, and the torque which a dancer rotation motor outputs. It is a figure explaining the operation|movement procedure of the control part which concerns on 1st embodiment. It is a figure explaining the modification of the tension adjusting device of the tire component manufacturing apparatus which concerns on 1st embodiment. It is a figure explaining the modification of the tire component manufacturing apparatus which concerns on 1st embodiment. It is a figure explaining the tension adjusting device of the tire component manufacturing apparatus which concerns on 2nd embodiment. It is a figure explaining the operation|movement procedure of the control part which concerns on 2nd embodiment. It is a figure explaining operation|movement of the tension adjustment apparatus of the tire component manufacturing apparatus which concerns on 2nd embodiment.

An example of an embodiment of the present disclosure will be described below with reference to the drawings. In addition, in each drawing, the same reference numerals are given to the same or equivalent components and parts. Also, the dimensional ratios in the drawings are exaggerated for convenience of explanation, and may differ from the actual ratios.

<First embodiment>
(Equipment overview)
FIG. 1 is a diagram showing a tire component manufacturing apparatus 10 according to a first embodiment of the invention. A tire component manufacturing apparatus 10 according to the first embodiment of the present invention includes an unwinding section 20 that supplies materials, a winding section 30 that winds up materials, a crimping section 90 that processes materials, and a conveying section that conveys materials. a tension adjusting device 50 for adjusting the tension of the material between the conveying portion 40 and the winding portion 30; and a control portion for controlling the operations of the unwinding portion 20, the winding portion 30, and the tension adjusting device 50 70.

(Unwinding part)
A fibrous body F (an example of a material), which is a manufacturing raw material of a tire component, is held in a wound state around the unwinding portion 20 .

The unwinding section 20 has a cylindrical material drum 22 around which the fibrous material F is wound, and an unwinding motor 24 for controlling the rotation angle of the material drum 22 .

The fibrous body F according to the present invention is, for example, a cord which is a part forming a tire, and organic fibers such as nylon, aramid, and polyester are woven in a grid pattern.

As an example, the material drum 22 is rotatably supported on a support base at the shaft of the material drum 22 , and an unwinding motor 24 is connected to the shaft of the material drum 22 .

The axial direction of the material drum 22 is a direction perpendicular to the conveying direction of the fiber body F (the tire member TP described later) (the depth direction of the paper surface of each drawing), and unless otherwise specified, the rollers and drums described later. The same applies to the rotation axis direction.

The unwinding motor 24 conveys the fibrous body F wound around the material drum 22 to the tension adjusting device 50 by rotationally driving such that the conveying speed of the fibrous body F becomes constant.

(Crimp part)
The pressing unit 90 has, as an example, an unvulcanized rubber supply unit (not shown) and a pressing roller 92 .

As an example, the pressing roller 92 is rotatably supported about the shaft of the pressing roller 92 , and a pressing motor 94 is connected to the shaft of the pressing roller 92 .

The pressing motor 94 is rotationally driven so that the unvulcanized rubber is pressed against the fibrous body F at a constant speed, thereby pressing the unvulcanized rubber against the fibrous body F to press the fibrous body F against the unvulcanized rubber. It is processed into a sheet-like tire member TP (another example of the material) coated with.

Then, the tire member TP is transported to the transport section 40 .

(Conveyor)
The conveying section 40 is provided between the crimping section 90 and a tension adjusting device 50 to be described later, and conveys the tire member TP conveyed from the crimping section 90 to the tension adjusting device 50 .

For example, the transport unit 40 includes transport rollers 42 for transporting the tire member TP, a transport motor 44 for rotationally driving the transport roller 42, and the tire member TP for transporting the tire member TP without slipping. It has a conveying roller 42 and pinch rollers 46 .

The conveying roller 42 is rotatably supported by a supporting portion (not shown), is connected to a conveying motor 44 , and is rotationally driven by the conveying motor 44 . Further, the transport roller 42 transports the tire member TP by rotating while being in contact with the tire member TP.

Further, the conveying motor 44 is preferably a servomotor capable of controlling the rotation angle and rotation speed, and is controlled by a control section 70 which will be described later.

(Tension adjusting device)
The tension adjusting device 50 is provided in the middle of the path along which the tire member TP is conveyed from the conveying section 40 to the winding section 30, and is a tension adjusting section that adjusts the tension of the tire member TP conveyed to the winding section 30. 52 and a control unit 70 that controls the operation of the tension adjustment unit 52 .

In this embodiment, the controller 70 controls the operations of the unwinding unit 20 , the winding unit 30 , the crimping unit 90 , and the conveying unit 40 in addition to the operations of the tension adjusting unit 52 .

(Tension adjustment part)
The tension adjusting section 52 has a pair of support rollers 54, a dancer arm 58 (an example of a pushing roller), a dancer rotation motor 60 (an example of a driving section), and a torque meter 62 (an example of a measuring section).

The dancer arm 58 includes a tensioner roller 56 in contact with the tire member TP between a pair of support rollers 54, and a shaft 58B rotatably supporting the tensioner roller 56 at one end and extending along the axial direction of the roller at the other end. side pivoted arm 58A.

The dancer rotation motor 60 transmits torque to the arm 58A of the dancer arm 58 (drives it to rotate).

Torque meter 62 measures the torque developed in dancer arm 58 .

As shown in FIG. 2, the pair of support rollers 54 are rotatably supported and provided below the tire member TP.

The tensioner roller 56 applies a load to the tire member TP from one end side of the dancer arm 58 and from the opposite side, that is, from above the pair of support rollers 54 .

The dancer rotation motor 60 is connected to the dancer arm 58 by a shaft 58B and transmits the torque output by the dancer rotation motor 60 to the dancer arm 58 .

Thereby, a load is applied to the tire member TP conveyed as described above. Torque is transmitted to the dancer arm so that the torque output by the dancer rotation motor 60 and the moment due to the reaction force (push load) from the tire member TP are balanced.

Also, the dancer rotation motor 60 is a servomotor whose rotation angle and rotation speed can be controlled, and whose rotation angle and output torque are controlled by the controller 70 as will be described later.

The torque meter 62 measures the torque generated in the dancer arm 58, more specifically the torque generated in the shaft 58B on which the dancer arm 58 is supported, as the load (physical quantity relating to) applied by the tensioner roller 56 to the tire member TP.

For example, in this embodiment, the torque meter 62 may be provided on the output shaft of the dancer rotation motor 60, and if the dancer rotation motor 60 has a reduction gear, the torque meter 62 may be a reduction gear. may be provided at the end of the output shaft.

Thus, the tire member TP is conveyed to the winding section 30 while the tension adjustment section 52 adjusts the tension in the material during conveyance.

Although the dancer arm 58 is provided to apply a load downward to the tire member TP as an example, the present invention is not limited to this, and the dancer arm 58 is provided to apply a load upward to the tire member TP. good too.

(winding part)
The winding unit 30 has, for example, a cylindrical winding drum 32 that winds the tire member TP by rotating, and a winding motor 34 that drives the winding drum 32 to rotate.

Winding drum 32 is, by way of example, a forming drum used to form tire components. The winding drum 32 is rotatably supported about a shaft, and a winding motor 34 is connected to the shaft of the winding drum 32 . The winding motor 34 is controlled by the controller 70 .

The winding motor 34 winds up the tire member TP conveyed from the tension adjusting device 50 by rotationally driving such that the winding speed of the conveyed tire member TP is constant.

The tire member TP is wound up by the winding section 30 . Further, the wound tire member TP is transported to a tire molding device 80, which will be described later.

(Tire molding equipment)
FIG. 3 is a diagram illustrating a tire molding apparatus 80 for processing the tire member TP into a tire according to this embodiment.

As shown in FIG. 3 , the tire molding device 80 has a belt unwinding drum 84 around which the tire member TP is wound, a conveyor 82 and a tire molding drum 86 .

The tire member TP conveyed to the tire molding machine 80 is conveyed to the tire molding drum 86 by the conveyor 82 from the state of being hung on the belt unwinding drum 84, and is formed into a raw tire together with other tire parts such as a tread and bead wires (not shown). is molded into

Then, the molded green tire is processed into a tire by applying heat and pressure in a vulcanization process.

(control part)
FIG. 4 is a block diagram showing the hardware configuration of the controller 70 according to this embodiment.

As shown in FIG. 4, the control unit 70 has, as an example, a storage unit 76, a CPU 78A (Central Processing Unit), a ROM 78B (Read Only Memory), and a RAM 78C (Random Access Memory).

The torque meter 62, the unwinding motor 24, the winding motor 34, the conveying motor 44, the crimping motor 94, the dancer rotating motor 60, and the storage unit 76 are connected by an interface (I/O), respectively, and also have a CPU 78A, a ROM 78B, and a RAM 78C. and interfaces are communicatively connected to each other via a bus 79 .

The CPU 78A is a central processing unit that executes various programs and controls each section. That is, the CPU 78A reads a program from the ROM 78B or the storage section 76 and executes the program using the RAM 78C as a work area.

The CPU 78A performs control of the above configuration and various arithmetic processing according to programs recorded in the ROM 78B or the storage section 76. FIG.

In this embodiment, the ROM 78B or the storage unit 76 stores a tension adjustment program according to the present invention and a dancer arm angle-torque correction relationship, which will be described later.

The ROM 78B stores various programs and various data. The RAM 78C temporarily stores programs or data as a work area.

The storage unit 76 is configured by a HDD (Hard Disk Drive), an SSD (Solid State Drive), or the like, and stores various programs including an operating system and various data.

The interface acquires the torque measured by the torque meter 62 , and outputs the result obtained by calculation by the CPU 78 A to the unwinding motor 24 , the winding motor 34 , the conveying motor 44 , the crimping motor 94 and the dancer rotation motor 60 .

The interface may communicate with each device in any way, but standards such as USB (Universal Serial Bus), RS-232C, Ethernet (registered trademark), and Wi-Fi (registered trademark) are used.

Note that the control unit 70 for controlling the unwinding motor 24, the winding motor 34, the conveying motor 44, the crimping motor 94, and the dancer rotating motor 60 is not limited to the configuration described above. may be integrated.

(tension adjustment)
Next, tension adjustment in this embodiment will be described with reference to FIGS. 2 and 5-A.

First, as shown in FIG. 2 , the tire member TP is conveyed between a pair of support rollers 54 while changing the conveying direction by applying a load to the tensioner roller 56 .

Further, the control unit 70 controls the speed of the conveying motor 44 that drives the conveying roller 42 based on the information from the encoder incorporated in the winding motor 34 that drives the winding drum 32 .

That is, the control unit 70 controls the speed of the conveying motor 44 with the peripheral speed of the winding drum 32 as a control target. As a result, the tire member TP conveyed to the tension adjusting section 52 is blocked from tension fluctuations of the material drum 22 .

In this embodiment, between the pair of support rollers 54, the tensioner roller 56 applies a load to the tire member TP being conveyed from the side opposite to the pair of support rollers 54 when viewed from the axial direction of the tensioner roller 56. Thus, tension is applied to the tire member TP during transport.

Further, while the tire member TP is being transported, the controller 70 feeds back the measurement result of the torque meter 62 to the dancer rotation motor 60, and controls the dancer rotation motor 60 so that the measurement result falls within the control target range. .

The output torque of the dancer rotation motor 60 is correlated with the tension of the tire member TP, and the control described above keeps the variation of the tension of the tire member TP within a certain range.

By the way, the angle of the dancer arm 58 may change as shown in FIG. 5-A in accordance with the above control. In this case, the tensioner roller 56 moves along an imaginary line I whose radius is the length of the dancer arm 58 from the axis 58B.

Here, when the dancer arm 58 rotates as shown in FIG. 5-A, even if the tension of the tire member TP does not change, the angular range in which the tire member TP winds around the tensioner roller 56 changes. The torque measurement result measured by the torque meter 62 changes.

Further, since the tire member TP generally has bending rigidity, bending resistance (bend loss) for bending the tire member TP is generated in a state where the tire member TP is wrapped around the tensioner roller 56 .

When the angle range in which the tire member TP winds around the tensioner roller 56 changes as described above, the bending resistance also changes.

As described above, when the dancer arm 58 rotates, even if the tension of the tire member TP does not change, the measurement result of the torque meter 62 changes before and after the dancer arm 58 rotates. The correlation with the tension of the tire member TP changes.

Here, in the present embodiment, the angle of the dancer arm 58 and the corrected torque output by the dancer rotation motor 60 are adjusted in consideration of changes in the correlation between the output torque of the dancer rotation motor 60 and the tension of the tire member TP. (hereinafter referred to as “dancer arm angle-torque correction relationship”) is derived in advance and stored in the storage unit 76 .

The controller 70 corrects the torque transmitted to the dancer arm 58 based on this dancer arm angle-torque correction relationship. The details of this control will be described later.

The controller 70 acquires angle information of the dancer arm 58 from a motor pulse signal sent to the dancer rotation motor 60 .

Next, the processing operation of the control unit 70 according to this embodiment will be described with reference to FIG.

FIG. 6 is a flow chart showing the flow of processing for adjusting the tension of the tire member TP by the control unit 70 . The CPU 78A reads out the tension adjustment program from the ROM 78B or the storage section 76, develops it in the RAM 78C, and executes the tension adjustment process.

In step S101, the control unit 70 acquires the target tension of the tire member TP to be transported from the storage unit 76, and the CPU 78A calculates the torque value output by the dancer rotation motor 60 to derive the target load range. .

The derived torque value is stored in RAM 78C.

In step S<b>102 , the control section 70 acquires the measurement result of the torque received by the shaft 58</b>B of the dancer arm 58 from the torque meter 62 of the tension adjusting section 52 .

In step S<b>103 , the control unit 70 detects the angle of the dancer arm 58 from the dancer rotation motor 60 that is the servomotor of the tension adjustment unit 52 .

In step S104, the control unit 70 derives the torque output by the dancer rotation motor 60 in step S101 based on the angle of the dancer arm 58 acquired in step S103 and the dancer arm angle-torque correction relationship stored in the storage unit 76. Correct from the value.

The corrected torque value is stored in RAM 78C.

At step S105, the controller 70 obtains the difference between the torque value corrected at step S104 and the torque received by the shaft 58B of the dancer arm 58 obtained at step S102.

The calculated torque value is stored in the RAM 78C.

In step S106, the control unit 70 causes the servo motor to output torque to the shaft 58B of the dancer arm 58 based on the torque value obtained in step S105.

In step S107, the control unit 70 confirms whether to continue the transportation of the tire member TP. If the transportation is to be continued, the process returns to step S102 to continue the tension adjustment. Also, when the transport is finished, the process is finished.

(Action and effect)
As described above, the control unit 70 controls the speed of the transport motor 44 with the peripheral speed of the winding drum 32 as the control target. It is desirable to combine

However, it is practically difficult to match the above speeds due to mechanical vibrations, fluctuations in the rotation of the conveying roller 42 and the winding drum 32, and the like.

That is, it is difficult to keep the tension of the tire member TP constant by making the peripheral speeds of the transport roller 42 of the transport unit 40 and the winding drum 32 of the winding unit 30 the same.

Here, in the tire component manufacturing apparatus 10 according to the present embodiment, the dancer arm 58 is rotated by the dancer rotation motor 60, and the tensioner roller 56 is brought into contact with the tire member TP to apply a load, thereby generating tension in the tire member TP. Let

As a result, by keeping the load applied to the tire member TP within a certain range, the tire member TP can be maintained regardless of the rotation speed of the rollers that convey the tire member TP, such as the unwinding unit 20, the winding unit 30, and the conveying unit 40. It becomes possible to adjust the tension of the TP within a certain range.

Further, the tire component manufacturing apparatus 10 according to the present invention uses the torque meter 62 to measure the torque generated in the dancer arm 58 as a physical quantity related to the load applied to the tire member TP by the dancer arm 58 of the tension adjusting section 52. there is

In the tire component manufacturing apparatus 10 , the controller 70 feedback-controls the dancer rotation motor 60 using the torque of the dancer arm 58 measured by the torque meter 62 .

As a result, even when the torque output from the dancer rotation motor 60 changes due to a disturbance such as an increase in the temperature of the dancer rotation motor 60, the output torque of the dancer rotation motor 60, that is, the load that the tensioner roller 56 presses against the tire member TP, is reduced. can be kept constant.

Therefore, the tire component manufacturing apparatus 10 according to the present embodiment can perform tire The tension of the tension member TP can be adjusted with higher precision.

Further, the tire component manufacturing apparatus 10 according to the present invention adjusts the tension of the tire member TP within a certain range, so that the torque output by the dancer rotation motor 60 is corrected according to the angle of the dancer arm 58 of the tension adjustment section 52. do.

That is, based on the dancer arm angle-torque correction relationship, the change in the angle at which the tire member TP winds around the tensioner roller 56 and the bend loss of the tire member TP in accordance with the rotation angle θ of the dancer arm 58 as shown in FIG. The torque output by the dancer rotation motor 60 is corrected so as to take into account the change in the correlation between the output torque of the dancer rotation motor 60 and the tension of the tire member TP.

More specifically, since the angle at which the tensioner roller 56 winds around the tire member TP changes according to the angle of the dancer arm 58, the torque output to keep the tension acting on the tire member TP constant is shown in FIG. - Change as shown in B.

The relationship between the output torque and the angle of the dancer arm 58 for making the tension acting on the tire member TP constant is obtained experimentally and stored in the storage unit 76 . corrects the torque output by

As a result, the tension of the tire member TP can be increased as compared with the case where the angle of the dancer arm 58 is not detected or the case where the tension generated in the tire member TP is adjusted by the torque or rotation speed of the transport roller 42 of the transport section 40. It can be adjusted with high precision.

As shown in FIG. 5-B, in the range from -20° to -10°, the amount of change in the output torque correction amount with respect to the change in angle increases, so the tension of the tire member TP is increased. More preferably, the angle of the dancer arm 58 is in the range of -10° to 20° for highly accurate adjustment.

(First modification)
FIG. 7 is an example of a modification according to this embodiment. As shown in FIG. 7, in this modification, the dancer arm 58 is provided with a counterweight 64 on the side opposite to the tensioner roller 56 with respect to the shaft 58B of the dancer arm 58 .

In this modification, the counterweight 64 is provided on the side opposite to the tensioner roller 56 with respect to the shaft 58B of the dancer arm 58 in FIG.

Therefore, (at least in part) the moment due to the weight of the tensioner roller 56 on the axis 58B of the dancer arm 58 is canceled by the moment due to the weight of the counterweight 64 .

Therefore, the moment of inertia of the dancer arm 58 is reduced by configuring the dancer arm 58 to have the counterweight 64 as in this modification.

As a result, the torque required to rotate the dancer arm 58 is reduced, so the capacity of the dancer rotation motor 60 can be reduced.

(Second modification)
In this modified example, as shown in FIG. 8, a tension measuring section 66 is installed downstream of the tension adjusting section 52 in the conveying direction. The tension measuring section 66 measures the tension of the tire member TP just before it is conveyed to the winding section 30 .

As an example, the tension measuring unit 66 preferably employs a contact-type tension measuring device 68 , continuously measures the tension of the tire member TP being conveyed, and transmits the measured tension to the control unit 70 .

In the tire component manufacturing apparatus 10 according to this modified example, instead of the tension adjustment operation described in the first embodiment based on the angle of the dancer arm 58, the output of the dancer rotation motor 60 is adjusted based on the result obtained by the tension measurement unit 66. Correct the torque.

In this way, the result of the adjustment of the tension of the tire member TP by the tension adjustment section 52 is fed back. The tension of the tire member TP can be adjusted with high accuracy regardless of the condition.

However, in this case, unlike the tire component manufacturing apparatus 10 according to the first embodiment, the tension measuring device 68 cannot be omitted.

(Third modification)
Further, the conveying roller 42 of the conveying unit 40 may be feedback-controlled by the angle of the dancer rotating motor 60 so that the rotation angle of the dancer arm 58 becomes a predetermined target value.

For example, when the rotation angle θ of the dancer arm 58 increases, the control unit 70 decreases the rotation speed of the transport roller 42 of the transport unit 40, and when the rotation angle θ of the dancer arm 58 decreases, the control unit 70 reduces the rotation speed of the transport roller of the transport unit 40. By increasing the rotation speed of 42, the angle of rotation of the dancer arm 58 is kept constant.

As a result, the tire member TP is given a tension by the dancer arm 58 while its conveying posture becomes constant, and the tension of the tire member TP caused by the change in the angle range in which the tire member TP winds around the tensioner roller 56 becomes constant. It becomes unnecessary to correct the torque to be applied.

Note that the torque correction according to the angle of the dancer arm 58 in the first embodiment and the control for keeping the rotation angle θ of the dancer arm 58 constant according to the present modification may be used together.

In this case, even if the rotation angle .theta. of the dancer arm 58 fluctuates for some reason while the rotation angle .theta. The tension in the member TP can be made constant.

In this case, the control unit 70 may perform control to return the rotation angle θ of the dancer arm to the angle before the change, or may perform control to keep the rotation angle θ of the dancer arm constant at the angle after the change.

In this modified example, the transport section 40 can be regarded as a component of the tension control device.

(Fourth modification)
Alternatively, the rotation angle range of the dancer arm 58 may be set to a predetermined angle range obtained in advance, and the rotation speed of the transport roller 42 of the transport section 40 may be adjusted according to the angle of the dancer rotation motor 60 .

For example, in FIG. 5A, when the rotation angle θ of the dancer arm 58 exceeds a predetermined rotation angle, the rotation angle θ of the transportation roller 42 of the transportation unit 40 is adjusted so that the rotation angle θ of the dancer arm 58 falls within a predetermined angle range. Decrease the rotation speed.

When the rotation angle .theta. of the dancer arm 58 falls below the predetermined rotation angle, the rotation speed of the transport roller 42 of the transport section 40 is increased so that the rotation angle .theta.

By adjusting the rotational speed of the conveying roller 42 of the conveying unit 40 according to the angle of the dancer rotation motor 60 in this manner, the dancer arm 58 does not deviate from the rotatable angle range and hit the mechanical stopper. can do.

(Other modifications)
In the above description, the torque meter 62 provided on the output shaft of the dancer rotation motor 60 was used to obtain the torque generated in the dancer arm 58. However, the torque received by the dancer arm 58 is not limited to this. It is enough if it can be detected.

For example, instead of the torque meter 62 , strain gauges may be attached to the dancer arm 58 to measure the bending moment of the dancer arm 58 and detect the torque experienced by the dancer arm 58 .

Even in this case, the same effects as those of the tire component manufacturing apparatus 10 according to the invention can be obtained as described above.

Further, in the above description, the tension adjustment program was stored in the ROM 78B or the storage unit 76, but not limited to this, a CD-ROM (Compact Disc Read Only Memory) etc. in which the tension adjustment program described above is recorded. may be provided in a form recorded on a recording medium.

Also, the tension adjustment program may be downloaded from an external device via a network.

Further, in the above description, the target tension of the tire member TP is acquired from the storage unit 76, but the present invention is not limited to this, and may be input by the operator using an external input device such as a touch panel. good too.

Further, for example, the tire molding device 80 in the above description may be further provided with a tension adjusting device 50 in the same way as the tire component manufacturing device 10 in the middle of the conveying route.

In this case, the tension of the tire member TP wound around the tire molding drum 86 in the tire molding device 80 can be controlled more accurately, so that the quality of the raw tire can be more stabilized.

Further, in the above description, the tire component manufacturing apparatus 10 and the tire molding apparatus 80 according to the present invention have been respectively described. It is also possible to use

Further, in the above description, the tire component manufacturing apparatus 10 according to the present invention has the crimping part 90. It is also possible to use a tire manufacturing apparatus that does not have such a device.

Moreover, in the above description, the tire member TP according to the present invention is wound around the winding drum 32, but it is not limited to this, and may be wound around the tire molding drum 86, for example.

That is, the tire component manufacturing apparatus 10 and the tire molding apparatus 80 can be used as an integrated tire manufacturing apparatus without the winding section 30, the belt unwinding drum 84, and the conveyor 82.

Further, in the above description, an organic fiber such as a cord is used as an example of the material, but the material is not limited to this. For example, it may be a material for tire parts such as unvulcanized rubber including rubber for tire treads, or may be a material for tire parts made of metal wires such as bead wires and steel belts. That is, all the members related to tire manufacturing can be subject to tension adjustment by the tension adjusting device 50 , can be manufactured by the tire component manufacturing device 10 , and can be materials used by the tire building device 80 .

In addition, the material according to the present invention is not limited to the raw material for tire parts, and in the case where it is deformable in the direction intersecting the conveying direction, such as a film-like, sheet-like, string-like or belt-like material. It can be preferably adopted.

Further, the tire component manufacturing apparatus 10 according to the present invention can be used not only as a tire component manufacturing apparatus but also as a fiber body F conveying apparatus having the tension adjusting device 50 .

<Second embodiment>
Next, a tire component manufacturing apparatus 100 according to a second embodiment of the present invention will be described with appropriate reference to FIGS. 9 and 10. FIG. The tire component manufacturing apparatus 100 differs from the first embodiment in that a tension adjustment section 152 is provided instead of the tension adjustment section 52 . In addition, about the structure similar to 1st embodiment, the same code|symbol may be attached|subjected and description may be abbreviate|omitted.

(Tension adjustment part)
As shown in FIG. 9, the tension adjusting portion 152 according to this embodiment is modified as follows from the tension adjusting portion 152 according to the first embodiment. That is, the pressing roller is the tensioner roller 56 and the linear motion member 158 having the linear motion body 158A and linearly moving, the driving portion is the driving motor 160, and the measuring portion is the load meter 162. FIG.

The linear motion member 158 linearly moves in a substantially vertical direction with respect to the transport direction of the tire member TP, and is installed below the tire member TP as an example.

The tensioner roller 56 is rotatably supported on one end side of the linear motion body 158A, and is positioned between the pair of support rollers 154 so that the tire member TP intersects the conveying direction of the tire member TP, as in the first embodiment. Add a load in the direction of

The load meter 162 measures the load applied by the tensioner roller 56 to the tire member TP.

The drive motor 160 is connected to the linear motion body 158A via a linear motion mechanism, and linearly moves the linear motion body 158A.

Further, the drive motor 160 is a servomotor capable of controlling the rotation angle and rotation speed, and the rotation angle and output torque are controlled by the controller 70 in the same manner as in the first embodiment.

The linear motion mechanism and the method of linearly moving the linear motion body 158A are not particularly limited, but as an example, a method of converting the rotary motion output from the drive motor 160 into linear motion using a rack and pinion mechanism is preferable. adopted by

(tension adjustment)
In the present embodiment, similarly to the first embodiment, between the pair of support rollers 154, the tensioner roller 56 applies a load to the tire member TP being conveyed from the side opposite to the pair of support rollers 154. Thus, the tension is adjusted to the tire member TP being conveyed.

Further, while the tire member TP is being transported, the control unit 70 feeds back the measurement result of the load meter 162 to the drive motor 160, and controls the drive motor 160 so that the measurement result falls within the control target range.

The measurement result of the load meter 162 is correlated with the tension of the tire member TP, and the control described above keeps the variation of the tension of the tire member TP within a certain range.

Here, when the linear motion body 158A linearly moves as shown in FIG. 9, the tire member TP winds around the tensioner roller 56 even if the tension of the tire member TP does not change, as in the first embodiment. As the angular range changes, the measurement result of the load measured by the load meter 162 changes.

In addition, as in the first embodiment, the tire member TP generally has bending rigidity. also occur.

When the angle range in which the tire member TP winds around the tensioner roller 56 changes as described above, the bending resistance also changes.

As described above, when the linear motion body 158A linearly moves, even if the tension of the tire member TP does not change, the measurement result of the load meter 162 changes before and after the linear motion of the linear motion body 158A. The correlation between the output torque and the tension of the tire member TP changes.

Here, in the present embodiment, the corrected torque output by the drive motor 160 and the position of the direct acting body 158A, which takes into account the change in the correlation between the output torque of the drive motor 160 and the tension of the tire member TP, is described above. (hereafter referred to as “linear motion body position-torque correction relationship”) is derived in advance and stored in the storage unit 76 .

A value for correcting the torque output by the drive motor 160 is derived based on this position-torque correction relationship of the linear moving body.

Next, the processing operation of the control unit 70 and the operation of the tire component manufacturing apparatus 10 according to this embodiment will be described with reference to FIG. 10 .

FIG. 10 is a flow chart showing the flow of processing for adjusting the tension of the tire member TP by the control unit 70 . The CPU 78A reads out the tension adjustment program from the ROM 78B or the storage section 76, develops it in the RAM 78C, and executes the tension adjustment process.

In step S201, the control unit 70 acquires the target tension of the tire member TP to be transported from the storage unit 76, and the CPU 78A calculates the torque value output by the drive motor 160 to derive the target load range.

The derived torque value is stored in RAM 78C.

In step S<b>202 , the control unit 70 acquires the load received by the linear motion body 158</b>A from the load meter 162 of the tension adjustment unit 152 .

In step S<b>203 , the control unit 70 detects the position of the linear motion body 158</b>A from the drive motor 160 of the tension adjustment unit 152 .

In step S204, the control unit 70 determines the load output by the drive motor 160 based on the position of the linear moving body 158A acquired in step S203 and the position-torque correction relationship of the linear moving body 158A stored in the storage unit 76. , is corrected from the value derived in step S201.

The corrected load value is stored in the RAM 78C.

In step S205, the control unit 70 obtains the difference between the load value corrected in step S204 and the load applied to the linear moving body 158A obtained in step S202.

The calculated load value is stored in the RAM 78C.

In step S206, the control unit 70 causes the drive motor 160 to output a load for linearly moving the linear motion body 158A based on the value of the load obtained in step S205.

In step S207, the control unit 70 confirms whether to continue the transportation of the tire member TP. If the transportation is to be continued, the process returns to step S202 to continue the tension adjustment. Also, when the transportation is finished, the process is finished.

(Action and effect)
In the tire component manufacturing apparatus 100 according to the present embodiment, the driving motor 160 is driven to linearly move the direct-acting member 158, and the tensioner roller 56 is applied to the tire member TP to apply a load, thereby tensioning the tire member TP. give rise to

In the tire component manufacturing apparatus 10 , the control section 70 feedback-controls the drive motor 160 using the load of the tensioner roller pressing the tire member TP measured by the load meter 162 .

As a result, even when the load of the tensioner roller 56 that presses the tire member TP due to the drive motor 160 changes due to a disturbance such as an increase in the temperature of the drive motor 160, the load can be kept constant.

Therefore, compared to the case where the tensioner roller 56 does not detect the variation in the load pushing the tire member TP, or the case where the position command value output to the drive motor 160 is controlled to be constant, the tire component manufacturing apparatus according to the present embodiment According to 100, the tension of the tire member TP can be adjusted with higher accuracy.

Further, the tire component manufacturing apparatus 10 according to the present invention adjusts the tension of the tire member TP within a certain range, so that the torque output by the drive motor 160 is corrected according to the position of the tensioner roller 56 of the tension adjustment section 152. do.

That is, based on the position-torque correction relationship of the linear moving body 158A, the change in the angle at which the tire member TP winds around the tensioner roller 56 and the bend loss of the tire member TP in accordance with the position of the linear moving body 158A. The torque output by the drive motor 160 is corrected so as to take into consideration the change in the correlation between the output torque and the tension of the tire member TP.

As a result, the tension of the tire member TP can be reduced as compared with the case where the position of the linear motion body 158A is not detected or the case where the tension generated in the tire member TP is adjusted by the torque or rotation speed of the conveying roller 42 of the conveying section 40. It can be adjusted with higher accuracy.

(First modification)
In the tire component manufacturing apparatus 100 according to the present embodiment, the conveying roller 42 of the conveying section 40 is feedback-controlled by the position of the tensioner roller 56 so that the vertical position of the tensioner roller 56 becomes a predetermined target value. good too.

For example, the control unit 70 reduces the rotation speed of the transport roller 42 of the transport unit 40 when the position of the tensioner roller 56 rises, and reduces the rotation speed of the transport roller 42 of the transport unit 40 when the position of the tensioner roller 56 descends. By increasing the rotational speed of 42, the position of tensioner roller 56 is held constant.

As a result, the tire member TP is kept in a constant conveying posture while being tensioned by the direct-acting member 158, and the tension of the tire member TP caused by the change in the angle range in which the tire member TP winds around the tensioner roller 56 is reduced. There is no need to correct the torque to make it constant.

Note that the torque correction according to the angle of the dancer arm 58 in the first embodiment and the control for keeping the position of the tensioner roller 56 constant according to the present modification may be used together.

In this case, even if the position of the tensioner roller 56 fluctuates for some reason while the position of the tensioner roller 56 is controlled to be kept constant, the torque is corrected in accordance with the position of the tensioner roller 56 by the control unit 70, whereby the tire member is maintained. TP tension can be constant.

In this case, the control unit 70 may perform control to return the position of the tensioner roller 56 to the position before the change, or may perform control to keep the position of the tensioner roller 56 constant after the change.

In this modified example, the transport section 40 can be regarded as a component of the tension control device.

(Second modification)
As described above, when the linear motion body 158A shown in FIG. 9 linearly moves, the distance between the tensioner roller 56 and the support roller 154 changes, so the angle range in which the tire member TP wraps around the tensioner roller 56 also changes. .

Here, as shown in FIG. 11, in this modified example, the gap between the pair of support rollers 154 is narrowed even by the tension adjusting device 150 according to the second embodiment, and the tire member TP is attached to the tensioner roller 56 of the direct acting body 158A. It is arranged so that the angle range of winding is 180°.

As described above, if the angle range over which the tire member TP is wound is set to 180°, the tensioner roller 56 can be adjusted even when the position of the linear moving body 158A changes, that is, even when the linear moving body 158A linearly moves upward in FIG. The angle range around which the tire member TP is wound does not change.

In this way, by setting the angle range in which the tire member TP wraps around to 180°, the angle range in which the tire member TP wraps around does not change. can be derived.

Therefore, the tension of the tire member TP can be adjusted with higher accuracy by setting the angle range around which the tire member TP is wound to 180°.

(Other modifications)
In this embodiment, the load cell 162 directly detects the load received by the linear motion body 158A, but the load cell 162 according to this embodiment is not limited to this.

For example, similarly to the first embodiment, the torque meter 62 incorporated in the output shaft of the drive motor 160 may be used to measure the load from the torque output by the drive motor 160 .

Further, in the present embodiment, the linear motion body 158A converts the rotational torque of the drive motor 160 into linear motion by the linear motion mechanism, but the linear motion method according to the present embodiment is not limited to this. For example, a linear servomotor or hydraulic cylinder may be used for direct linear motion. A feed screw mechanism may be used in place of the rack and pinion mechanism described above.

Modifications that can be employed in the first embodiment can also be appropriately employed and combined in the present embodiment.

As described above, the embodiments of the present disclosure have been described with reference to the accompanying drawings. , it is clear that various modifications or applications can be conceived, and it is naturally understood that these also belong to the technical scope of the present disclosure.

INDUSTRIAL APPLICABILITY A tension adjusting device according to the present disclosure can be used for a tension adjusting device, a conveying device, a tire component manufacturing device, and a tire manufacturing device that conveys a material while adjusting the tension of the material with high accuracy.

DESCRIPTION OF SYMBOLS 10... Tire component manufacturing apparatus, 20... Unwinding part, 22... Material drum, 24... Unwinding motor, 30... Winding part, 32... Winding drum, 34... Winding motor, 40... Conveying part, 42... Conveying Rollers 46 Pinch roller 50 Tension adjusting device 52 Tension adjusting unit 54 Support roller 56 Tensioner roller 58 Dancer arm Linear motion member (an example of push roller) 58A Arm Linear motion body 58B... Shaft, 60... Dancer rotating motor (an example of drive unit), 62... Torque meter (an example of measuring unit), 64... Counter weight, 66... Tension measuring unit, 68... Tension measuring device, 70... Control unit, 76 Memory unit 78A CPU 78B ROM 78C RAM 79 Bus 80 Tire molding device 82 Conveyor 84 Belt unwinding drum 86 Tire molding drum 90 Crimping unit 92 Pressure roller 94 Pressure motor 100 Tire component manufacturing apparatus 150 Tension adjusting device 152 Tension adjusting unit 154 Support roller 158 Linear motion member 158A Linear motion body 160 Drive motor 162 Load cell, F... fibrous body, I... virtual line, TP... tire member

Claims (18)

a pair of support rollers for supporting the conveyed material;
a push roller between the pair of support rollers that pushes the material in a direction intersecting with the conveying direction of the material when viewed from the axial direction of the support rollers;
a measuring unit that measures the load that the pressing roller presses against the material;
a drive unit for driving the push roller;
a control unit that controls the drive unit so that the load falls within a target load range based on the measurement result of the measurement unit;
Tension adjuster with The pressing roller comprises a roller contacting the material, and an arm rotatably supporting the roller at one end and rotatably supported at the other end with the direction extending along the axial direction of the roller as the axial direction. is a dancer arm including
The drive unit rotates the arm of the dancer arm,
The measurement unit measures the torque generated in the dancer arm.
2. A tension adjusting device according to claim 1. said dancer arm further having a counterweight on the opposite side of said roller from said axis;
3. A tension adjusting device according to claim 2. The control unit further includes a storage unit that stores a correspondence relationship between the angle of the dancer arm and the tension generated in the material being conveyed, and the drive unit outputs based on the correspondence relationship stored in the storage unit. to compensate for torque,
The tension adjusting device according to claim 2 or 3. Further comprising a tension measuring unit for measuring tension generated in the material conveyed downstream in the conveying direction of the material with respect to the support roller,
The control unit corrects the torque output by the drive unit based on the result obtained from the tension measurement unit.
The tension adjusting device according to claim 2 or 3. The pressing roller is a linear motion member having a roller in contact with the material and a linear motion member that rotatably supports the roller and linearly moves in the cross direction,
The measurement unit measures the load received by the linear motion member from the material.
2. A tension adjusting device according to claim 1. The pair of support rollers are arranged so that the angular range in which the material is wrapped around the rollers of the linear motion member is 180°.
7. A tension adjusting device according to claim 6. further comprising a conveying unit arranged upstream with respect to the pair of support rollers in the conveying direction of the material and imparting a conveying force to the material;
The control unit controls the conveying speed of the material by the conveying unit so that the angle of the dancer arm or the position of the roller constituting the linear motion member is constant.
A tension adjusting device according to any one of claims 2 to 6. an unwinding unit for unwinding the material;
a winding unit for winding the material;
The tension adjusting device according to any one of claims 1 to 7, which is provided in the middle of a path along which the material is conveyed from the unwinding section to the winding section;
A conveying device having a The material is a tire member,
an unwinding unit for unwinding the tire member;
a winding unit for winding the tire member;
The tension adjusting device according to any one of claims 1 to 7, which is provided in the middle of a route along which the tire member is conveyed from the unwinding section to the winding section;
A tire component manufacturing device having The material is a tire member,
an unwinding unit for unwinding the tire member;
a winding unit for winding the tire member;
The tension adjusting device according to any one of claims 1 to 7, which is provided in the middle of a route along which the tire member is conveyed from the unwinding section to the winding section;
a tire molding device for processing a tire component obtained from the tire member into a tire;
A tire manufacturing device having supporting the conveyed material with a pair of support rollers,
Between the pair of support rollers, the material is pressed by a push roller driven by a drive unit in a direction crossing the conveying direction of the material when viewed from the axial direction of the support rollers;
measuring the load that the pressing roller presses the material with a measuring unit;
Controlling the drive unit by a control unit so that the load falls within a target load range based on the measurement result of the measurement unit;
A method of tension adjustment, comprising: The pressing roller includes a roller in contact with the material, and an arm that rotatably supports the roller at one end and is rotatably supported at the other end with the direction extending along the roller as the axial direction. is a dancer arm,
The drive unit rotates the arm of the dancer arm,
The measurement unit measures the torque generated in the dancer arm.
The tension adjusting method according to claim 12. The pressing roller is a linear motion member having a roller in contact with the material and a linear motion member that rotatably supports the roller and linearly moves in the cross direction,
The measuring unit measures the load received by the linear motion member from the pressing roller.
The tension adjusting method according to claim 12. unwinding the material at an unwinding unit;
Winding the material with a winding unit,
Controlling the tension with the tension adjustment method according to any one of claims 12 to 14 during the path along which the material is transported from the unwinding section to the winding section.
Conveyance method. The material is a tire member,
Unwinding the tire member by an unwinding unit,
Winding the tire member with a winding unit,
Including the tension adjustment method according to any one of claims 12 to 14 in the middle of the route in which the tire member is conveyed from the unwinding unit to the winding unit,
A tire component manufacturing method. The material is a tire member,
Unwinding the tire member by an unwinding unit,
Winding the tire member with a winding unit,
A tire component obtained by the tension adjusting method according to any one of claims 12 to 14 is processed into a tire in the middle of a route in which the tire member is conveyed from the unwinding section to the winding section. including
Tire manufacturing method. A program that causes a computer to function as a control unit of the tension adjusting device according to any one of claims 1 to 7.

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