JP2017030200A - Spinning device for belt molding - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a spinning device for belt molding which can more accurately set a condition for spinning.SOLUTION: A spinning device for belt molding 1 has: a shank 8 for holding a seat 106; a shank rolling mechanism 9; a cable conductor carry-over mechanism 4 which carries over a cable conductor 102 to the seat 106; a traverse mechanism 5 for displacing the cable conductor carry-over mechanism 4 along an axial direction S1 of the shank 8; and a control part 7. The control part 7 uses a model based on a prescribed winding state such that the seat 106 is wound on the shank 8, and further, the cable conductor 102 is wound on the seat 106, and thus, calculates a peripheral length C1 as a length of the cable conductor 102 around a central axis L1 in the winding state.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a spinning device used when molding a belt such as a transmission belt.

  In power transmission belts used in power transmission mechanisms such as automobile engines and general industrial machines, core wires (rope fiber cords) as tensile bodies are embedded in a spiral at a predetermined pitch in the belt width direction. Yes.

  In the general manufacturing process of a transmission belt, first, the molding material (reinforcing cloth such as canvas, unvulcanized rubber sheet, core wire, etc.) that constitutes the transmission belt is required on the outer periphery of the cylindrical mold. The unvulcanized molded body is formed by sequentially winding in response. Next, each molding material is integrally laminated by vulcanization to obtain a vulcanized belt sleeve. The transmission belt is obtained by cutting the obtained vulcanization sleeve into a predetermined width (ring cutting) with a cutter or the like.

  In this manufacturing process, winding of the core wire (roping of the rope) is performed using a spinning device as described in Patent Documents 1 and 2. In the spinning device, for example, a molding material disposed on the belt inner layer side is mounted in advance on a cylindrical mold. Then, on the outer peripheral surface of the molding material, the core wire is laterally fed (traverse) at a predetermined speed while rotating the mold, whereby the core wire is wound around the molding material in a spiral shape.

Japanese Patent Publication No. 6-92133 JP 2000-44124 A

  In recent years, a series of processes for forming an unvulcanized molded body including a spinning process has been automated by computer control. In the spinning device, the outer circumference length of the mold (outer diameter), rope speed (speed for winding the core wire), rope tension (tensile force for winding the core wire), spinning pitch (interval of the core wire) as spinning parameters Is mentioned. An operator who operates the spinning device inputs the above conditions to the computer control unit. The calculation unit of the computer control unit calculates the mold rotation speed (number of rotations) and the speed at which the core wire is traversed (traverse) based on the above conditions. The computer control unit controls a series of spinning operations using the calculated values.

  Here, (A) the mold rotation speed (rotational speed) is (B) the outer peripheral length (outer diameter) of the core wire around the mold center axis at the position where the core wire is wound, and (C) the core wire is laterally fed It is calculated from the relational expression with the speed to perform. Actually, the core wire is wound not on the outer peripheral surface of the mold but on the outer peripheral surface of the molding material in a state where the molding material (canvas or unvulcanized rubber sheet) is mounted on the mold. Since this molding material is soft, the core wire bites into the molding material during spinning. In addition, the amount of biting varies depending on the type of molding material, the tensile force acting on the core wire, the ambient temperature, and the like. As a result, the circumference around the mold center axis at the position where the core is wound cannot be set uniformly. That is, the perimeter changes for each molding operation in the spinning device.

  For this reason, in the conventional spinning device, the mold rotation speed is calculated by using the peripheral length on the outer peripheral surface of the mold as the outer peripheral length at the position where the core wire is wound. However, at the mold rotation speed based on the peripheral length on the outer peripheral surface of the mold, there is a deviation in the relationship of the parameters (A), (B), and (C). That is, in the method of calculating the mold rotation speed using the circumference on the outer peripheral surface of the mold, the mold rotation speed calculated using the circumference on the outer peripheral surface of the mold and a desired rope speed is used. Even if spinning is performed, spinning is performed at a rope speed faster than the actual rope speed. As a result, the winding position of the core wire on the outer peripheral surface of the molding material may be shifted from a desired position.

  An object of the present invention is to solve the above-described problems, and to provide a spinning device for belt forming in which conditions for spinning can be set more accurately in a series of automatic spinning operations controlled by a computer.

  (1) In order to solve the above-mentioned problem, a spinning device for forming a belt according to an aspect of the present invention provides a belt formed by using a sheet and a core wound around the sheet. A spinning device for forming a belt for winding the core wire, a body part for holding the sheet, and a body part rotation mechanism for rotating the body part around a central axis of the body part, A core wire passing mechanism for passing the core wire to the sheet rotating around the central axis to wind the core wire around the sheet, and the core wire passing mechanism along the axial direction of the trunk portion And a control unit for controlling the trunk rotating mechanism and the traverse mechanism, wherein the control unit has the sheet wound around the trunk, and further includes the sheet. Using a model based on a predetermined winding state where the core wire is wound, to calculate the circumferential length of the length of the central axis of the core wire in the winding state.

  According to this configuration, the circumference is calculated using a model based on a predetermined winding state in which a sheet is wound around a drum and a core wire is wound around the sheet. Accordingly, the control unit can calculate the circumference in consideration of an actual state where the core wire is wound around the sheet. Therefore, the control unit can control the trunk rotation mechanism and the traverse mechanism based on the circumference that is more suitable for the actual condition when the core is wound around the sheet. As a result, in the spinning device for belt forming, the core wire is wound around the sheet in a more accurate manner as intended. Depending on the above, it is possible to realize a spinning device for belt forming that can set the conditions for spinning more accurately.

  (2) Preferably, the control unit is configured to acquire the model by executing a predetermined adjustment mode prior to a spinning mode in which the core wire is spirally wound around the sheet. The core wire passed from the core wire passing mechanism is wound around the sheet by operating the body rotation mechanism, and the control unit is configured to control the core wire on the sheet in the adjustment mode. Calculate the perimeter.

  According to this configuration, in the adjustment mode, the control unit calculates the circumferential length on the sheet in a state where a predetermined amount of the core wire is wound around the sheet actually held on the body part. Thereby, the control part can calculate the circumference of the core wound around the actual sheet before actually spinning the core on the sheet. Therefore, in an environment where the condition of biting of the core wire into the sheet changes each time, such as the sheet type (material, etc.), the tensile force acting on the core wire (tension), the ambient temperature, etc. Can be calculated.

  (3) More preferably, the rotational speed of the trunk in the adjustment mode is set to be less than the rotational speed of the trunk in the spinning mode.

  According to this configuration, in the adjustment mode, the body portion can be rotated at a rotation speed more suitable for measuring the circumference. Further, the spinning operation can be completed more quickly in the operation of spinning the core wire after the adjustment mode is completed (main winding process).

  (4) Preferably, the said control part calculates the said perimeter based on the moving speed of the said core wire in the said adjustment mode, and the rotational speed of the said trunk | drum.

  According to this configuration, in the adjustment mode, the control unit can calculate the circumference more accurately with a simple configuration that detects two speeds of the moving speed of the core wire and the rotational speed of the trunk.

  (5) Preferably, the said control part sets the target rotational speed of the said trunk | drum in the said spinning mode based on the calculated said perimeter.

  According to this configuration, the control unit can set the target rotational speed of the trunk that is optimal for winding the core wire around the sheet in a desired manner.

  (6) More preferably, the control unit sets a target rotational speed of the trunk in the spinning mode based on a preset target moving speed of the core wire and the circumference.

  According to this configuration, the control unit can set the target rotational speed of the trunk in the spinning mode with a simple configuration.

  (7) Preferably, the said control part sets the target moving speed of the said core wire transfer mechanism to the axial direction of the said trunk | drum in the said spinning mode based on the calculated said perimeter.

  According to this configuration, the control unit can set the moving speed of the core wire passing mechanism that allows the core wire to be wound around the sheet in a spiral manner at a more uniform pitch.

  According to the present invention, it is possible to realize a belt forming spinning device that can set the spinning conditions more accurately.

It is a side view of the spinning device for belt formation concerning one embodiment of the present invention. It is sectional drawing of the belt formed using the spinning apparatus for belt shaping | molding. It is a typical side view for demonstrating a mode that a core wire wraps around the sheet | seat wound around the trunk | drum, and has shown one part in the cross section. It is a block diagram which shows the electrical structure of a spinning apparatus. It is a sequence diagram for demonstrating an example of operation | movement of a spinning apparatus. It is a sequence diagram for demonstrating an example of operation | movement of a spinning apparatus.

  Hereinafter, embodiments of the present invention will be described. FIG. 1 is a side view of a spinning device 1 for forming a belt according to an embodiment of the present invention. FIG. 2 is a cross-sectional view of the belt 100 formed using the belt forming spinning device 1. Referring to FIGS. 1 and 2, a belt forming spinning device 1 (hereinafter, also simply referred to as a spinning device 1) is used, for example, to manufacture a transmission belt for transmitting power.

  Examples of such transmission belts include transmission belts used in power transmission applications such as general industrial machines and automobiles. More specifically, examples of the transmission belt include a wrapped V belt, a low edge V belt, a V-ribbed belt, a toothed belt, a flat belt, and a conveyance belt.

  A belt 100 as an example of a transmission belt is a V belt (for example, a low edge V belt). The belt 100 includes an upper cloth 101, an upper rubber 107, a core wire 102, an adhesive rubber 103, a lower rubber 104, and a lower cloth 105. In order from the outer peripheral surface side of the belt 100, an upper cloth 101, an upper rubber 107, an adhesive rubber 103 in which a core wire 102 is embedded, a lower rubber 104, and a lower cloth 105 are laminated. When manufacturing such a belt 100, first, the core wire 102 is spirally wound around an unvulcanized sheet 106 in which an unvulcanized rubber layer serving as a lower rubber 104 is wound around a reinforcing cloth serving as a lower fabric 105. . An unvulcanized rubber layer that becomes the lower rubber 104 is wound around the reinforcing cloth that becomes the cloth 105, and is further disposed between the core wire 102 and the lower rubber 104 of the adhesive rubber 103 and a part of the adhesive rubber 103. What is wound with an unvulcanized rubber layer may be used as the sheet 106. The spinning device 1 is used for spirally winding (spinning) the core wire 102 around the sheet 106. The sheet 106 around which the core wire 102 is wound becomes the belt 100 through a predetermined vulcanization process, a cutting process, and the like.

  The sheet 106 is a long rubber layer having the same length as the entire length of the belt 100, for example. The sheet 106 is configured using, for example, a chloroprene rubber (CR) composition. The width of the sheet 106 is set to be larger than the width of the belt 100, and a plurality of belts 100 can be manufactured using one sheet 106.

  The core wire 102 is provided so as to extend along the longitudinal direction of the belt 100. Thus, the core wire 102 functions as a reinforcing member that prevents the belt 100 from being broken. The material of the core wire 102 is, for example, polyester.

  Referring to FIG. 1, the spinning device 1 attaches the core wire 102 to the sheet 106 to manufacture the sheet 100 and the belt 100 formed using the core wire 102 wound around the sheet 106 as described above. Used for winding.

  The spinning device 1 includes a sheet holding mechanism 2, a core wire feeding mechanism 3, a core wire passing mechanism 4, a traverse mechanism 5, an input device 6, and a control unit 7.

  The sheet holding mechanism 2 includes a body portion 8 for holding the sheet 106, and a body portion rotation mechanism 9 for rotating the body portion 8 about the central axis L <b> 1 of the body portion 8.

  The trunk | drum 8 is a part which has a cylindrical outer peripheral surface. A sheet 106 is wound around the outer peripheral surface of the body portion 8. The circumferential length (circumferential length) of the outer peripheral surface of the body portion 8 is set to be substantially the same as the circumferential length (peripheral length) of the inner peripheral surface of the sheet 106, and substantially the entire outer peripheral surface of the body portion 8. A sheet 106 is wound over the sheet. In the present embodiment, the trunk portion 8 is arranged vertically, and the central axis L1 of the trunk portion 8 faces the vertical direction. In addition, the direction of the trunk | drum 8 may be horizontal. The body 8 is supported by the body rotation mechanism 9 so as to be rotatable around the central axis L1.

  The body rotation mechanism 9 includes a body rotation motor 10, a drive shaft 11, and a driven shaft 12.

  The trunk portion rotation motor 10 is provided as a drive source for applying a rotational force around the central axis L <b> 1 to the trunk portion 8. The trunk portion rotation motor 10 is, for example, an electric motor. The output shaft of the trunk rotating motor 10 is coupled to the drive shaft 11 so that power can be transmitted. The drive shaft 11 is arranged coaxially with the body portion 8 and is connected to one end portion (lower end portion) of the body portion 8.

  The drive shaft 11 supports the body portion 8. As a result, the driving force of the body rotating motor 10 is transmitted to the body 8 via the drive shaft 11. The driven shaft 12 is disposed coaxially with the drive shaft 11 and is fixed to the other end portion (upper end portion) of the body portion 8. The driven shaft 12 is supported by the support member 13. With the above configuration, the body portion 8 is supported at both ends. In a state where the sheet 106 is wound around the body portion 8, the core wire 102 is sent from the core wire feeding mechanism 3 toward the sheet 106.

  The core wire delivery mechanism 3 holds the core wire 102 and is configured to send out the core wire 102 toward the sheet 106 (core wire delivery mechanism 4).

  The core wire delivery mechanism 3 includes a bobbin 14 and a tension mechanism 15.

  The bobbin 14 holds the core wire 102 in a state where the core wire 102 is wound. The bobbin 14 is configured to be rotatable around the support shaft 14a, and rotates around the support shaft 14a when the core wire 102 is fed out. The core wire 102 drawn out from the bobbin 14 is guided by the pulley 16 and sent to the tension mechanism 15.

  The tension mechanism 15 is provided to apply a predetermined tensile force (tension) to the core wire 102. The tension mechanism 15 includes fixed position pulleys 17, 18, 19, a position variable pulley 20, a swing arm 21, and a tension applying mechanism 22.

  The fixed position pulleys 17, 18, and 19 are supported by the wall 23, and are rotatably supported by the wall 23 at a fixed position. The fixed position pulleys 17, 18, and 19 are, for example, arranged vertically. The core wire 102 sent from the pulley 16 is wound around the fixed position pulleys 17 and 18, and further sent to the fixed position pulley 19 and the position variable pulley 20 side.

  The position variable pulley 20 is a pulley that is rotatably supported at one end of the swing arm 21. The swing arm 21 is supported by the wall 23 at the fulcrum portion 24 and can swing with the position variable pulley 20 around the fulcrum portion 24. A tension applying mechanism 22 is disposed at the other end of the swing arm 21. The tension applying mechanism 22 is, for example, a fluid pressure cylinder.

  The tension applying mechanism 22 includes a fixed portion 22a formed of a cylinder, a movable portion 22b formed of a rod and supported by the fixed portion 22a, and a fluid pressure adjusting portion 22c. The fluid pressure adjusting unit 22c sends a fluid pressure generation source such as a pump and the fluid generated by the fluid pressure generation source toward one of the pair of cylinder chambers of the fixed portion 22a and the other cylinder chamber. And a valve for discharging the fluid from the tank. The fluid pressure adjusting unit 22c (fluid pressure generating source and valve) is configured to be controlled by the control unit 7 described later. In addition, while using a rod as a fixed part, you may use a cylinder as a movable part. The tension mechanism 15 is not limited to a cylinder, and may be any configuration that can apply a tensile force to the core wire 102.

  The other end of the swing arm 21 is connected to the movable portion 22b. When the movable portion 22b is displaced in the axial direction of the movable portion 22b with respect to the fixed portion 22a, the swing arm 21 and the position variable pulley 20 swing around the fulcrum portion 24. In this way, the tensile force acting on the core wire 102 changes due to the displacement of the position variable pulley 20 around the fulcrum part 24. The core wire 102 passing through the position variable pulley 20 is sent to the core wire passing mechanism 4. The core wire passing mechanism 4 is provided to pass the core wire 102 to the sheet 106 rotating around the central axis L <b> 1 in order to wind the core wire 102 around the sheet 106.

  The core wire passing mechanism 4 includes a touch pulley 25 and an arm 26 that supports the touch pulley 25.

  The touch pulley 25 is provided to press the core wire 102 sent from the tension mechanism 15 through guide pulleys 27 and 28 (described later) against the sheet 106. The touch pulley 25 is disposed so as to face the outer peripheral surface of the body portion 8 and is supported by the arm 26. The arm 26 is supported by a nut portion 32 described later of the traverse mechanism 5. The arm 26 is configured to be swingable about an axis parallel to the central axis L <b> 1, and receives a driving force of a fluid pressure cylinder (not shown) to move the touch pulley 25 toward the seat 106 and away from the touch pulley 25. It can be displaced.

  Further, the core wire passing mechanism 4 has a cutter (not shown) and is configured to be able to cut the core wire 102 fed from the touch pulley 25.

  The traverse mechanism 5 is provided in order to displace the core wire passing mechanism 4 along the axial direction S1 of the trunk portion 8. The traverse mechanism 5 is disposed adjacent to the trunk portion 8. The traverse mechanism 5 includes a traverse motor 29 and a ball screw mechanism 30.

  The traverse motor 29 is an electric motor provided to displace the core wire passing mechanism 4 in the axial direction S1. The traverse motor 29 is formed using, for example, a servo motor or a stepping motor, and the rotational position of the output shaft of the traverse motor 29 can be accurately controlled. The driving force of the traverse motor 29 is transmitted to the ball screw mechanism 30.

  The ball screw mechanism 30 is provided as a motion conversion mechanism for converting the rotational motion of the output shaft of the traverse motor 29 into a linear motion along the axial direction S1 and transmitting it to the core wire passing mechanism 4. The ball screw mechanism 30 has a male screw shaft 31 and a nut portion 32.

  The male screw shaft 31 is provided as a shaft member extending in parallel with the axial direction S <b> 1 and is rotatably supported by a pair of block members 33. An output shaft of a traverse motor 29 is connected to the male screw shaft 31 so as to be integrally rotatable. A nut portion 32 is screwed onto the male screw shaft 31.

  The nut portion 32 is configured to be displaced in the axial direction S <b> 1 as the male screw shaft 31 rotates. The nut portion 32 is disposed between the pair of block members 33, and the rotation preventing member 34 supported by the one block member 33 is attached to the nut portion 32. Thereby, the nut portion 32 is restricted from rotating along with the rotation of the male screw shaft 31. The nut portion 32 supports the arm 26 of the core wire passing mechanism 4, and the arm 26 and the touch pulley 25 can be integrally displaced in the axial direction S <b> 1. The core wire 102 is guided from the tension mechanism 15 to the touch pulley 25 through the guide pulleys 27 and 28.

  With the above configuration, the core wire 102 sent from the touch pulley 25 to the seat 106 is wound around the outer peripheral surface of the seat 106 as the body portion 8 rotates. At this time, the traverse mechanism 5 displaces the touch pulley 25 at a predetermined speed in the axial direction S1. Thereby, the core wire 102 is spirally wound on the sheet 106.

  As shown in the schematic diagram of FIG. 3, when the core wire 102 is wound around the outer peripheral surface 106 a of the sheet 106 wound around the body portion 8, the core wire 102 bites into the sheet 106 so as to bite into the sheet 106. Wrapped around. For example, the core wire 102 bites into the sheet 106 by the amount of biting Δ. For this reason, with respect to the core wire 102 on the sheet 106, the circumference C1 around the central axis L1 of the trunk portion 8 (the circumference of the center axis of the core wire 102) is the material (softness) of the sheet 106 and the core wire 102. It varies depending on hardness. For this reason, in this embodiment, as will be described later, the spinning device 1 measures the circumference C1 in a state closer to the actual state, and performs a spinning operation based on the measurement result.

  The tension mechanism 15, the core wire passing mechanism 4, the traverse mechanism 5, and the sheet holding mechanism 2 having the above configuration are controlled by the control unit 7 based on an input signal from the input device 6.

  FIG. 4 is a block diagram showing an electrical configuration of the spinning device 1. Referring to FIGS. 1 and 4, input device 6 is a touch panel device, for example, and has touch panel 36 operated by an operator of spinning device 1. The touch panel 36 is configured to output a predetermined signal corresponding to the pushed content to the control unit 7 by being pushed by the operator.

  The control unit 7 is configured to be able to control the trunk rotation mechanism 9 and the traverse mechanism 5. The controller 7 is formed using, for example, a PLC (Programmable Logic Controller). The control unit 7 may be formed using a computer including a CPU, a RAM, and a ROM. Further, a core speed sensor 37 is disposed on the path of the core 102 between the bobbin 14 and the touch pulley 25.

  The core speed sensor 37 is, for example, a rotary encoder provided on the arm 26 that supports the touch pulley 25, detects the moving speed of the core 102, and outputs a signal specifying the moving speed to the control unit 7. That is, the control unit 7 is connected to the core wire speed sensor 37 and can detect a signal specifying the speed of the core wire 102 when the core wire 102 is sent out toward the sheet 106.

  Based on the signal given from the input device 6, the signal given from the core speed sensor 37, the program stored in the control unit 7, etc., the control unit 7 includes the tension mechanism 15 and the core wire passing mechanism. 4. The traverse mechanism 5 and the sheet holding mechanism 2 are controlled.

  In the present embodiment, the control unit 7 uses the model based on a predetermined winding state in which the sheet 106 is wound around the body portion 8 and the core wire 102 is wound around the sheet 106, and the center in the winding state is used. A circumference C1 (outer circumference) is calculated as the length of the core wire 102 around the axis L1.

  In the present embodiment, the control unit 7 executes the spinning mode after executing the predetermined adjustment mode. The adjustment mode is a mode for acquiring the above model and then calculating the circumference C1. The spinning mode is a mode in which the core wire 102 is spirally wound around the sheet 106 based on the calculated circumference C1.

  The control unit 7 is connected to the first amplifier 41, the second amplifier 42 and the third amplifier 43.

  The first amplifier 41 is connected to the fluid pressure adjusting unit 22c of the tension applying mechanism 22, and transmits a control signal from the control unit 7 to the fluid pressure adjusting unit 22c. The fluid pressure adjusting unit 22c controls the supply and discharge of the working fluid to and from the fixed unit 22a based on this control signal. As a result, the position of the movable portion 22b with respect to the fixed portion 22a is adjusted, and the position of the arm 26 around the support portion 24 changes. Thereby, the position variable pulley 20 is displaced, and the tensile force acting on the core wire 102 changes.

  The second amplifier 42 is connected to the body rotation motor 10 of the sheet holding mechanism 2. The second amplifier 42 transmits a control signal from the control unit 7 to the body rotation motor 10. Thereby, the control unit 7 controls the driving of the body portion rotating motor 10. The second amplifier 42 is connected to a body rotation speed sensor 10 a such as a rotary encoder provided in the body rotation motor 10, and outputs a rotation speed signal of the output shaft of the body rotation motor 10. It is configured to transmit to the traverse motor 29 via the third amplifier 43. The rotation speed signal may be output to the control unit 7.

  The third amplifier 43 is connected to the traverse motor 29 of the traverse mechanism 5. The third amplifier 43 transmits a control signal from the control unit 7 to the traverse motor 29. Thereby, the control unit 7 controls the driving of the traverse motor 29.

  Next, an example of a spinning operation in which the core wire 102 is spirally wound around the sheet 106 using the spinning device 1 will be described. 5 and 6 are sequence diagrams for explaining an example of the operation of the spinning device 1. In addition, when referring to FIG. 5 and FIG. 6, the description will be made with reference to figures other than FIG. 5 and FIG. 6 as appropriate.

  With reference to FIG. 5 and FIG. 6, in this embodiment, the process of step S10-S20 is performed as adjustment mode. Moreover, the process of step S21-step S27 is performed as spinning mode. More specific description will be given below.

  In the spinning device 1, first, the sheet 106 is wound around the trunk portion 8 manually by an operator (step S <b> 1). As a result, the sheet 106 is held on the outer peripheral surface of the sheet 106 so as to rotate integrally with the body portion 8.

  Next, when the operator operates the input device 6, the control unit 7 receives an input signal from the input device 6 (step S2). Specifically, by the operation of the input device 6 by the operator, the core wire target speed TS102 as the core wire 102 in the spinning mode, the target value of the tensile force acting on the core wire 102 (target tensile force TT102), and the core The target spinning pitch TP102 of the line 102 (the target value of the pitch of the core wire 102 in the axial direction S1 when the core wire 102 is spirally wound) is input to the input device 6. The input device 6 outputs a signal for specifying the core wire target speed TS102, the target tensile force TT102, and the target spinning pitch TS102 to the control unit 7.

  The controller 7 calculates a cylinder pressure (target cylinder pressure TP22) to be generated in the cylinder of the tension applying mechanism 22 based on the target tensile force TT102 (step S3). That is, the control unit 7 calculates the target cylinder pressure TP22 necessary for applying a tensile force equal to the target tensile force TT102 to the core wire 102. Further, the control unit 7 sets a rotation ratio r for calculating the target rotation number TR29 of the traverse motor 29 for one rotation of the body unit 8 from the target spinning pitch TP102 (step S4). The rotation ratio r is stored in the memory of the control unit 7, for example. Thereby, the control unit 7 sets a target value of the feed amount of the core wire 102 in the axial direction S1 when the sheet 106 rotates once.

  Next, when the input device 6 is operated by the operator, a core wire fixing command signal is output to the control device (step S5). The control unit 7 that has received this core wire fixing command signal outputs the core wire fixing command signal to the core wire passing mechanism 4, the traverse mechanism 5, and the sheet holding mechanism 2 (step S6). The traverse motor 29 of the traverse mechanism 5 that has received the core wire fixing command signal rotates the male screw shaft 31 of the ball screw mechanism 30 by a predetermined amount so that the touch pulley 25 reaches a predetermined initial position. Is moved to the initial position (step S7). Next, the cylinder for driving the arm 26 of the core wire passing mechanism 4 receives the core wire fixing command signal, thereby displacing the arm 26 toward the body portion 8 (seat 106). Thereby, the front ends of the touch pulley 25 and the core wire 102 are along the sheet 106 (step S8).

  Next, the trunk rotating motor 10 that has received the core wire fixing command signal performs a rope fixing operation by driving the trunk 8 to rotate several times (step S9). At this time, the traverse motor 29 is not driven, and the core wire 102 is not displaced in the axial direction S1. As a result, the core wire 102 is repeatedly wound around the sheet 106 at one position in the axial direction, and wound around the sheet 106 several times. As a result, one end of the core wire 102 is fixed to the sheet 106.

  Next, when the operator operates the input device 6, a circumference measurement command signal is given to the control unit 7. That is, a signal instructing measurement of the circumference C1 of the core wire 102 wound around the outer peripheral surface of the sheet 106 (the length of the core wire 102 per circumference around the central axis L1 of the body portion 8) is given to the control unit 7. It is done. Thereby, the circumference measurement operation is started (step S10).

  Next, the control unit 7 outputs a signal (target cylinder pressure signal) for specifying the target cylinder pressure TP22 set by the input device 6 to the fluid pressure adjusting unit 22c of the tension applying mechanism 22 via the first amplifier 41. (Steps S11 and S12). The fluid pressure adjusting unit 22c of the tension applying mechanism 22 displaces the movable unit 22b so as to generate a fluid pressure corresponding to the target cylinder pressure TP22. As a result, due to the displacement of the movable portion 22b, the positions of the arm 26 and the position variable pulley 20 change around the fulcrum portion 24, and a predetermined tensile force acts on the core wire 102 (step S13).

  Accordingly, the control unit 7 sets the circumference measurement speed for the body rotation motor 10 (step S14). The rotational speed rs of the trunk rotating motor 10 at the time of circumference measurement is, for example, 10 rpm, and in this embodiment is less than the rotation measurement of the trunk rotating motor 10 at the time of spinning. That is, the rotational speed rs of the body part 8 in the adjustment mode is set to be lower than the rotational speed of the body part 8 in the spinning mode. Next, the control unit 7 outputs a circumference measurement rotation signal to the body rotation motor 10 of the sheet holding mechanism 2 (step S15). As a result, the output shaft of the trunk portion rotating motor 10 rotates at a rotational speed rs different from the rotational speed when the core wire 102 is spirally wound (spun). That is, the trunk portion 8 rotates (step S16). In the present embodiment, the rotational speed of the output shaft of the body rotating motor 10 is equal to the rotational speed of the body 8. The rotation drive time of the body rotation motor 10 at the time of circumference measurement is, for example, about 1 second to 2 seconds.

  As described above, in the adjustment mode, the body 8 is rotated by the operation of the body rotation motor 10 of the body rotation mechanism 9, and the core wire 102 wound around the bobbin 14 is connected to the pulleys 16 to 20, 27, 28, and the like. And reaches the touch pulley 25 of the core wire passing mechanism 4, is passed from the touch pulley 25 to the sheet 106, and is wound around the sheet 106. The moving speed ms (rope speed) of the core wire 102 at this time is detected by the core wire speed sensor 37. (Step S17). The speed detection signal of the core 102 by the core speed sensor 37 is given to the control unit 7 (step S18). Thus, in the adjustment mode (peripheral length measurement step, steps S10 to S19), preliminary measurement of the moving speed ms of the core wire 102 is performed prior to the spinning operation.

  Next, as a first adjustment step, the control unit 7 calculates the circumferential length C1 of the core wire 102 in a state where the core wire 102 is wound around the sheet 106 (step S19). Specifically, in the present embodiment, the circumferential length C1 is an expression using the rotational speed rs of the body portion 8 set in step S11 and the moving speed ms of the core wire 102 measured in step S14. Is used to calculate. That is, the circumferential length C1 = rs × ms × 60 (s). The controller 7 calculates the circumference C1 using this equation. That is, the control unit 7 calculates the circumferential length C1 of the core wire 102 on the seat 106 based on the moving speed ms of the core wire 102 and the rotational speed rs of the body portion 8 in the adjustment mode.

  Next, as a second adjustment step, the control unit 7 calculates a target rotational speed TS8 of the body portion 8 in the spinning mode (step S20). Specifically, in the present embodiment, the target rotational speed TS8 of the body portion 8 uses the core line target speed TS102 (target rope speed) when spinning the core line 102 to the seat 106, and the circumference C1. It is calculated from the formula. That is, the target rotational speed TS8 of the body portion 8 = circumferential length C1 / (core wire target speed TS102 × 60 (s)). As described above, the control unit 7 sets the target rotational speed TS8 of the body 8 in the spinning mode based on the target moving speed TS102 of the core wire 102 and the circumference C1 set in advance by the input device 6 (operator). calculate.

  Further, the control unit 7 outputs a signal for specifying the target rotational speed TS8 of the trunk part 8 (target rotational speed signal of the trunk part 8) to the trunk rotating motor 10 via the second amplifier 42 (step S21). , S22). The body rotation motor 10 uses the output shaft of the body rotation motor 10 so as to generate the same rotation speed as the target rotation speed TS8, instead of the rotation speed rs for measuring the circumference C1 described above. Rotating drive. Thereby, the trunk | drum 8 rotates with target rotational speed TS8 (step S23).

  At this time, the trunk rotational speed sensor 10a detects the rotational speed MS10 (actually measured value) of the output shaft of the trunk rotational motor 10. This rotational speed detection signal is given to the traverse motor 29 via the second amplifier 42 and the third amplifier 43 (step S24).

  In addition, the control unit 7 outputs a signal indicating the rotation ratio r set in step S4 to the traverse motor 29 via the third amplifier 43 (steps S25 and S26). Then, the traverse motor 29 sets a target rotation speed TS29 obtained from the rotation speed MS10 of the body rotation motor 10 and the output ratio r given from the control unit 7. The traverse motor 29 is driven so that the output shaft of the traverse motor 29 rotates at the same rotational speed as the target rotational speed TS29 (step S27). In this way, the control unit 7 outputs a signal indicating the rotation ratio r to the traverse motor 29, so that the target moving speed of the core passing mechanism 4 in the axial direction S1 in the spinning mode based on the circumference C1. Set.

  In the present embodiment, signal output from the control unit 7 to the first amplifier 41, the second amplifier 42, and the third amplifier 43 is performed simultaneously.

  As a result, the body portion 8 rotates at the target rotation speed TS8, and the touch pulley 25 is displaced in one of the axial directions S1 at a predetermined target movement speed by driving the traverse motor 29. As a result, the core wire 102 fed out from the bobbin 14 and passed from the touch pulley 25 to the outer peripheral surface of the sheet 106 is spirally wound around the sheet 106 at the target spinning pitch TP102. Then, the output shaft of the trunk rotating motor 10 and the output shaft of the traverse motor 29 are rotated by a predetermined rotation amount and then stopped. As a result, the core wire 102 is wound around substantially the entire width direction of the sheet 106. While the core wire 102 is being spun, the core wire speed sensor 37 detects the speed of the core wire 102.

  As described above, according to the present embodiment, the control unit 7 uses a model based on a predetermined winding state in which the sheet 106 is wound around the body 8 and the core wire 102 is wound around the sheet 106. The circumference C1 is calculated. Thereby, the control part 7 can calculate the circumference C1 in consideration of the actual state in which the core wire 102 is wound around the sheet 106. Therefore, the control unit 7 can control the trunk rotation mechanism 9, the core wire transfer mechanism 4, and the traverse mechanism 5 based on the circumferential length C <b> 1 that matches the actual condition when the core wire 102 is wound around the sheet 106. As a result, in the belt forming spinning device 1, the core wire 102 is wound around the sheet 106 in a more accurate manner as intended. Depending on the above, it is possible to realize the belt forming spinning device 1 that can set the conditions for spinning more accurately.

  Further, according to the present embodiment, the control unit 7 is configured to acquire the above model by executing the adjustment mode prior to the spinning mode in which the core wire 102 is spirally wound around the sheet 106. In the adjustment mode, the core wire 102 passed from the core wire passing mechanism 4 is wound around the sheet 106 by operating the body rotation mechanism 9. Next, the control unit 7 calculates the circumferential length C1 of the core wire 102 on the sheet 106 in the adjustment mode. According to this configuration, in the adjustment mode, the control unit 7 calculates the circumferential length C1 on the sheet 106 in a state where a predetermined amount of the core wire 102 is wound around the sheet 106 actually held on the body 8. To do. Accordingly, the control unit 7 can calculate the circumferential length C1 of the core wire 102 wound around the actual sheet 106 before actually spinning the core wire 102 on the sheet 106. Therefore, in an environment where the condition of biting of the core wire 102 into the sheet 106 changes each time, such as the type (material, etc.) of the sheet 106, the tensile force (tension) acting on the core wire 102, and the ambient temperature, the control unit 7 Thus, the actual circumference C1 can be calculated more accurately.

  Further, according to the present embodiment, the rotational speed rs of the body 8 in the adjustment mode is set to be less than the rotational speed of the body 8 in the spinning mode. According to this configuration, in the adjustment mode, the body portion 8 can be rotated at a rotation speed more suitable for measuring the circumference C1. In addition, the spinning operation can be completed more rapidly in the operation of spinning the core wire 102 after the adjustment mode is completed (main winding process).

  Further, according to the present embodiment, the control unit 7 calculates the circumferential length C1 based on the moving speed ms of the core wire 102 and the rotational speed rs of the body 8 in the adjustment mode. According to this configuration, in the adjustment mode, the control unit 7 can calculate the circumference C1 more accurately with a simple configuration that detects the two speeds of the moving speed ms of the core wire 102 and the rotational speed rs of the body 8. .

  Moreover, according to this embodiment, the control part 7 sets the target rotational speed TS8 of the trunk | drum 8 in spinning mode based on the calculated circumference C1. According to this configuration, the control unit 7 can set the target rotational speed TS8 of the body 8 that is optimal for winding the core wire 102 around the sheet 106 in a desired manner.

  Further, according to the present embodiment, the control unit 7 sets the target rotational speed TS8 of the body portion 8 in the spinning mode based on the preset target moving speed TS102 of the core wire 102 and the circumference C1. According to this configuration, the control unit 7 can set the target rotational speed TS8 of the body unit 8 in the spinning mode with a simple configuration.

  Moreover, according to this embodiment, the control part 7 sets the target moving speed of the core wire passing mechanism 4 to the axial direction S1 of the trunk | drum 8 in spinning mode based on the calculated circumference C1. According to this configuration, the control unit 7 can set the moving speed of the core wire passing mechanism 4 that can wind the core wire 102 around the sheet 106 in a spiral manner at a more uniform pitch.

  In the present embodiment, the target rotational speed TS8 of the body portion 8 can be calculated using the circumferential length C1 (outer diameter) measured in a state where the core wire 102 is wound around the sheet 106. Therefore, unlike the case where the outer peripheral length of the trunk portion 8 is the circumferential length C1, (A) the rotational speed (the number of rotations) of the trunk portion 8, (B) the circumferential length C1, and (C) the core wire 102 in the axial direction. It is possible to suppress the occurrence of deviation in the relationship between the three parameters, ie, the speed of lateral feed along S1. Therefore, the spinning device 1 can perform the spinning work according to the target setting conditions. With such a configuration, the amount of the core wire 102 biting into the soft sheet 106 (molding material such as a canvas or an unvulcanized rubber sheet) as a base is taken into consideration, and further, the type of the molding material, the core wire 102 The control unit 7 can automatically and accurately specify the circumferential length C1 at the position where the core wire 102 is wound each time when the above-mentioned biting condition changes depending on the tensile force, ambient temperature, etc. .

  The embodiment of the present invention has been described above. However, the present invention is not limited to the above-described embodiments, and various modifications can be made as long as they are described in the claims. For example, you may change as follows.

  (1) For example, in the above-described embodiment, an example in which one core wire 102 is wound around the sheet 106 has been described. However, this need not be the case. For example, the present invention may be applied to a form in which two or more core wires 102 are wound around the sheet 106 simultaneously.

  (2) Moreover, in the above-mentioned embodiment, the form in which the trunk | drum 8 was arrange | positioned vertically was demonstrated to the example. However, this need not be the case. The direction of the trunk portion 8 is not particularly limited. For example, the trunk portion 8 may be disposed horizontally.

  (3) In the above-described embodiment, in the adjustment mode (steps S10 to S20), the tension applying mechanism 22 of the tension mechanism 15 may or may not apply a tensile force to the core wire 102. Good.

  (4) In the above-described embodiment, in the adjustment mode, the core rotating mechanism 9 is operated, whereby the core wire 102 passed from the core wire passing mechanism 4 is wound around the sheet 106. The control unit 7 acquires a model for calculating the length C1. However, this need not be the case. For example, the state where the sheet 106 is wound around the body portion 8 may be reproduced by computer simulation, and the circumference C1 may be calculated in this computer simulation. Thus, the model for calculating the circumference C1 may be other than the model in which the core wire 102 is actually wound around the sheet 106.

  (5) The present invention is not limited to the contents of the above-described embodiment, but the tubular body (cylindrical) body portion 8 is rotated so that the rope as a core wire is traversed and traversed into the sheet. Any device that wraps around can be applied.

  The present invention can be widely applied as a belt forming spinning device.

DESCRIPTION OF SYMBOLS 1 Spinning apparatus for belt forming 4 Core wire passing mechanism 5 Traverse mechanism 7 Control unit 8 Body portion 9 Body portion rotating mechanism 100 Belt 102 Core wire 106 Sheet C1 Circumference L1 Center axis

Claims (7)

A belt-forming spinning device for winding the core wire around the sheet to manufacture a sheet and a belt formed using the core wire wound around the sheet,
A body for holding the sheet;
A body rotation mechanism for rotating the body around the central axis of the body;
A core wire passing mechanism for passing the core wire to the sheet rotating around the central axis to wind the core wire around the sheet;
A traverse mechanism for displacing the core wire passing mechanism along the axial direction of the body part;
A controller for controlling the trunk rotating mechanism and the traverse mechanism,
The control unit uses a model based on a predetermined winding state in which the sheet is wound around the body and the core wire is wound around the sheet, and the control unit is configured to rotate around the central axis in the wound state. A belt forming spinning device, wherein a circumference as a length of the core wire is calculated. The belt forming spinning device according to claim 1,
The control unit is configured to acquire the model by executing a predetermined adjustment mode prior to a spinning mode in which the core wire is spirally wound around the sheet.
In the adjustment mode, the core wire passed from the core wire passing mechanism is wound around the sheet by operating the trunk rotating mechanism,
The belt forming spinning device, wherein the control unit calculates the circumference of the core wire on the sheet in the adjustment mode. A spinning device for forming a belt according to claim 2,
The belt forming spinning device according to claim 1, wherein a rotation speed of the body portion in the adjustment mode is set to be lower than a rotation speed of the body portion in the spinning mode. A spinning device for forming a belt according to claim 2 or 3,
The belt forming spinning device, wherein the control unit calculates the circumferential length based on a moving speed of the core wire and a rotational speed of the body part in the adjustment mode. The belt forming spinning device according to any one of claims 2 to 4,
The said control part sets the target rotational speed of the said trunk | drum in the said spinning mode based on the calculated said perimeter, The spinning apparatus for belt shaping | molding characterized by the above-mentioned. A spinning device for forming a belt according to claim 5,
The control part sets a target rotational speed of the body part in the spinning mode based on a preset target moving speed of the core wire and the circumference, and a belt-forming spinning device . A spinning device for forming a belt according to any one of claims 1 to 6,
The said control part sets the target moving speed of the said core wire passing mechanism to the axial direction of the said trunk | drum in the said spinning mode based on the calculated said perimeter, The spinning apparatus for belt shaping | molding characterized by the above-mentioned.

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