JP2018149806A - Sheet winding apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sheet winding apparatus having a capability of easily winding a sheet around a periphery of a rotating member without requiring a worker's skill, shortening an operation time required for winding the sheet, and promoting an improvement of an efficiency of a sheet winding operation.SOLUTION: A rotating mechanism 22 has a main shaft 30 configured to support a rotating body 20 and rotatably drive the rotating body 20. A sheet gripping portion 23 is configured to grip an end portion 100a of a sheet 100 between the sheet gripping portion 23 and an outer periphery 20a of the rotating body 20 by approaching toward the outer periphery 20a of the rotating body 20 supported by the main shaft 30. A driving mechanism 24 drives the sheet gripping portion 23 so as to approach and separate from the outer periphery 20a of the rotating body 20. A support mechanism 25 rotatably supports the sheet gripping portion 23 and the driving mechanism 24 with respect to the rotating mechanism 22 together with the rotating body 20.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a sheet winding device that is a device for winding a sheet around an outer periphery of a rotating body, and more particularly, to a sheet winding device that is used in a manufacturing process of a transmission belt used for power transmission and winds a rubber sheet around the outer periphery of the rotating body. .

  Conventionally, an annular power transmission belt that transmits power by friction, such as a V belt or a flat belt, has been used. In the manufacturing process of such a transmission belt for power transmission, constituent materials such as an unvulcanized rubber sheet and canvas are wound around the outer periphery of a rotating body such as a cylindrical mold, and a cylindrical laminate is formed. The body is formed.

  The above laminate is vulcanized with a vulcanizing can or the like and then removed from the mold to form a vulcanized belt sleeve. And this power transmission belt is manufactured by this vulcanization belt sleeve being cut | disconnected by the circumferential direction in the shape of a ring with predetermined width. Alternatively, the laminated body is cut in the circumferential direction in a ring shape and then vulcanized with a vulcanizing can or the like to form a vulcanized rubber belt. And a transmission belt is manufactured by giving predetermined processing etc. to this vulcanized rubber belt as needed.

  In patent document 1, the manufacturing method of the V belt comprised as a wrapped V belt among the transmission belts mentioned above is disclosed. The V belt is configured as a transmission belt having a V-shaped cross section. The wrapped V-belt is configured as a V-belt that is covered with an outer covering such as canvas.

  In the method for manufacturing a transmission belt disclosed in Patent Document 1, first, an unvulcanized rubber sheet, a core wire, and an extended rubber layer of a material of a compressed rubber layer are formed on the outer periphery of a rotating body configured as a cylindrical drum. The unvulcanized rubber sheets of the above materials are sequentially laminated and wound. Thereby, a cylindrical unvulcanized sleeve is formed. Then, the unvulcanized sleeve is cut in the circumferential direction to form an annular unvulcanized rubber belt. The unvulcanized rubber belt is removed from the rotating body, both side surfaces are cut at a predetermined angle so that the cross-sectional shape becomes a V-shaped cross section, and the periphery thereof is covered with canvas. Then, the unvulcanized rubber belt covered with the canvas is vulcanized with a vulcanizing can to produce a transmission belt.

JP-A 63-236630

  As disclosed in Patent Document 1, in the manufacturing process of the transmission belt, a sheet winding operation is performed in which an unvulcanized rubber sheet is wound around the outer periphery of the rotating body over one turn. A rotating body around which a sheet configured as a rubber sheet is wound is configured as a cylindrical drum or the like as disclosed in Patent Document 1, and is configured to rotate with a main shaft.

  In the above-described sheet winding operation, the operator manually performs the operation of winding the sheet around the outer periphery of the rotating body while rotating the rotating body together with the main shaft. For this reason, in order to wind a sheet | seat around the outer periphery of a rotary body accurately, an operator's skill is required and much work time is also required. Therefore, it is desirable that the sheet can be easily wound around the outer periphery of the rotating body without requiring the operator's skill, the work time required for winding the sheet can be shortened, and the efficiency of the sheet winding work can be improved.

  The present invention has been made in view of the above circumstances, and its purpose is to easily wind a sheet around the outer periphery of a rotating body without requiring the skill of an operator, and to shorten the work time required for winding the sheet. An object of the present invention is to provide a sheet winding apparatus capable of improving the efficiency of sheet winding work.

(1) A sheet winding apparatus according to an aspect of the present invention for achieving the above object relates to a sheet winding apparatus that winds a sheet around an outer periphery of a rotating body. A sheet winding apparatus according to an aspect of the present invention includes a rotating mechanism having a main shaft configured to rotate and drive the rotating body while supporting the rotating body, and the rotating body supported by the main shaft. By approaching the outer periphery, a sheet gripping portion configured to grip the end portion of the sheet with the outer periphery of the rotating body, and the sheet gripping portion toward the outer periphery of the rotating body And a support mechanism that rotatably supports the sheet gripper and the drive mechanism together with the rotating body with respect to the rotating mechanism.

  According to this configuration, the sheet gripping portion is driven toward the outer periphery of the rotating body by the driving mechanism in a state where the end portion of the sheet is disposed in the region between the outer periphery of the rotating body and the sheet gripping portion. Is done. Thereby, the edge part of a sheet | seat is pinched and hold | gripped between the outer periphery of a rotary body, and a sheet | seat holding part. Next, the main shaft of the rotating mechanism rotates in a state where the sheet gripping portion and the driving mechanism are rotatably supported together with the rotating body with respect to the rotating mechanism. As a result, the sheet whose end is gripped between the rotating body and the sheet gripping portion is wound around the outer periphery of the rotating body with the rotation of the rotating body rotating together with the sheet gripping portion. For this reason, according to the sheet winding apparatus having the above-described configuration, the sheet can be easily wound around the outer periphery of the rotating body without requiring the skill of the operator.

  Further, according to the sheet winding apparatus having the above configuration, the sheet can be easily wound around the outer periphery of the rotating body simply by gripping the end portion of the sheet between the rotating body and the sheet gripping portion and rotating the rotating body. Therefore, the work time required for sheet winding can be shortened, and the efficiency of sheet winding work can be improved. In addition, according to the sheet winding apparatus having the above-described configuration, the sheet gripping unit, the drive mechanism, the support mechanism, and the rotation mechanism are operated, so that the sheet can be easily wound around the outer periphery of the rotating body without requiring operator skill. Therefore, it is possible to easily achieve automation of the sheet winding operation.

  As described above, according to the above configuration, the sheet can be easily wound around the outer periphery of the rotating body without requiring the skill of the operator, the work time required for winding the sheet can be shortened, and the efficiency of the sheet winding work can be reduced. Improvements can be made.

(2) The sheet gripping portion may include a gripping main body portion extending along a direction parallel to the rotation axis direction of the rotating body.

  According to this configuration, the grip main body of the sheet gripper is configured to extend along a direction parallel to the rotation axis direction of the rotating body. For this reason, the sheet gripping portion can easily and stably hold the end portion of the sheet along the rotation axis direction of the rotating body between the outer periphery of the rotating body.

(3) The drive mechanism includes a cylinder unit that holds the sheet gripping portion and is supported by the rotation mechanism, and the cylinder unit is displaced relative to the cylinder body and the cylinder body. And the rod is relatively displaced with respect to the cylinder body so that the sheet gripping portion is driven to approach and separate from the outer periphery of the rotating body.

  According to this configuration, the drive mechanism includes the cylinder unit that holds the sheet gripping portion with respect to the rotation mechanism. For this reason, the drive mechanism that drives the sheet gripping portion to approach and separate from the outer periphery of the rotating body can be realized with a simple structure, and can be efficiently arranged in the sheet winding apparatus.

(4) The drive mechanism may include a pair of cylinder units, and each of the pair of cylinder units may hold the sheet gripping portion.

  According to this configuration, the drive mechanism is configured to hold the sheet gripping portion with respect to the rotation mechanism via the pair of cylinder units. For this reason, the sheet gripping portion can be driven so as to approach and separate from the outer periphery of the rotating body in a very stable state. In addition, the driving mechanism that drives the sheet gripping portion with respect to the outer periphery of the rotating body in a very stable state can be realized with a simple structure, and can be arranged in a space efficient manner in the sheet winding apparatus.

(5) The support mechanism includes a connection state in which the drive mechanism holding the sheet gripping portion is connected to the rotation mechanism so as to rotate together with the rotation body, and between the rotation mechanism and the drive mechanism. You may have the clutch comprised so that switching was possible between the non-connection state which interrupted | blocked the power transmission path | route and canceled the said connection state.

  According to this configuration, in the support mechanism, the connection state in which the sheet gripping portion and the driving mechanism rotate together with the rotating body, and the power transmission path between the rotating mechanism and the driving mechanism are cut off, so that the sheet gripping portion and the driving mechanism become the rotating body. At the same time, a clutch for switching the state between the sheet gripper and the drive mechanism and the rotation mechanism is provided between the non-rotation state and the non-connection state. For this reason, the operation | work which drives the main axis | shaft of a rotation mechanism and a rotary body can be easily performed only by switching a clutch, without rotating a sheet | seat holding part and a drive mechanism.

(6) The sheet winding apparatus further includes a conveyance table that conveys a sheet toward an area between an outer periphery of the rotating body and the sheet gripping portion, and an end portion of the conveyance table includes a conveyance table. A concave portion that is recessed inward from the front end side and penetrated in the thickness direction of the conveyance table is provided, and a convex portion that is disposed corresponding to the concave portion is provided in the sheet gripping portion, and is conveyed by the conveyance table. With the end portion of the sheet being disposed in a region between the outer periphery of the rotating body and the sheet gripping portion, at least a part of the convex portion passes through the inside of the concave portion, so that the convex portion The end of the sheet pressed by the pressing may be pressed against the outer periphery of the rotating body, and the end of the sheet may be sandwiched and held between the outer periphery of the rotating body and the convex portion.

  According to this configuration, the convex portion of the sheet gripping portion that has passed through the concave portion of the conveyance table rotates the end portion of the sheet while the end portion of the sheet is disposed in the region between the outer periphery of the rotating body and the sheet gripping portion. The sheet is pressed against the outer periphery of the body, and the end portion of the sheet is sandwiched and gripped between the outer periphery of the rotating body and the convex portion. For this reason, the edge part of a sheet | seat can be easily pinched and hold | gripped between the outer periphery of a rotary body and a sheet | seat holding part.

(7) The plurality of recesses are provided, the plurality of recesses are arranged along the width direction of the transfer table at the end of the transfer table, the plurality of protrusions are provided, The convex portions may be arranged in a line corresponding to the plurality of concave portions in the sheet gripping portion.

  According to this configuration, the plurality of convex portions arranged in a line in the sheet gripping portion respectively pass through the plurality of concave portions arranged in the width direction at the end portion of the transport table, and the end portions of the sheet are formed by the plurality of convex portions. The sheet is pressed against the outer periphery of the rotating body, and the end of the sheet is sandwiched and gripped between the outer periphery of the rotating body and the plurality of convex portions. For this reason, the edge part of a sheet | seat can be easily pinched and hold | gripped between the outer periphery of a rotary body and a sheet | seat holding part in the more stable state.

  According to the present invention, the sheet can be easily wound around the outer periphery of the rotating body without requiring the skill of the operator, the work time required for winding the sheet can be shortened, and the efficiency of the sheet winding work can be improved. A sheet winding apparatus can be provided.

(A) is a figure which shows typically the rubber sheet used for manufacture of a transmission belt, (B) is a figure which shows typically the unvulcanized sleeve manufactured in the middle step of the manufacturing process of a transmission belt. (C) is a figure which shows a power transmission belt typically. It is a chart figure which shows an example of the manufacturing process of a power transmission belt. It is a figure which shows typically the sleeve forming system containing the sheet | seat winding apparatus which concerns on one embodiment of this invention, and a sheet | seat winding apparatus. It is a figure which shows typically a part of sheet | seat cut | disconnected by the sheet cutting mechanism of the sleeve shaping | molding system. It is a front view of a sheet winding apparatus. FIG. 4 is an enlarged view of a part of FIG. 3, and is a view of a part of the sheet winding apparatus as viewed from the side. FIG. 4 is a diagram illustrating a part of a conveyance table of a sheet conveyance mechanism and a part of a sheet gripping unit in a sheet winding apparatus. It is a figure for demonstrating the action | operation of the sheet conveyance mechanism of a sheet winding apparatus. It is a figure for demonstrating the action | operation of the sheet conveyance mechanism of a sheet winding apparatus. It is a figure which shows the rotation mechanism, sheet | seat holding part, drive mechanism, and support mechanism in a sheet winding apparatus. It is a figure which shows the rotation mechanism, sheet | seat holding part, drive mechanism, and support mechanism in a sheet winding apparatus. It is a figure which shows the conveyance table and sheet holding part of a sheet conveyance mechanism in a sheet winding apparatus with a part of sheet. It is a figure which expands and shows a part of FIG. 10, Comprising: It is a figure which shows the drive mechanism and support mechanism of a sheet winding apparatus, and its vicinity. It is a figure for demonstrating the action | operation of the drive mechanism of a sheet winding apparatus. It is a figure for demonstrating the action | operation of the drive mechanism of a sheet winding apparatus. It is a figure which expands and shows a part of FIG. 13, Comprising: It is a figure which shows the clutch in the support mechanism of a sheet winding apparatus, and its vicinity. It is a figure for demonstrating the action | operation of the clutch of the support mechanism of a sheet winding apparatus. It is a chart figure which shows an example of an unvulcanized sleeve shaping | molding process. It is a figure for demonstrating the action | operation of a sheet winding apparatus. It is a figure for demonstrating the action | operation of a sheet winding apparatus. It is a figure for demonstrating the action | operation of the sheet | seat joining mechanism of a sleeve shaping | molding system.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. In the following description, first, the outline of the manufacturing process of the transmission belt will be described, and then the sheet winding apparatus according to the embodiment of the present invention applied to the manufacture of the transmission belt, and the sleeve including the sheet winding apparatus The molding system will be described.

[Manufacturing process of transmission belt]
FIG. 1A is a diagram schematically showing a rubber sheet 100 used for manufacturing a transmission belt. FIG. 1B is a diagram schematically showing an unvulcanized sleeve 101 manufactured in the middle of the manufacturing process of the transmission belt. FIG. 1C is a diagram schematically showing the transmission belt 102. The transmission belt 102 is formed in an annular shape and is configured as an endless transmission belt for power transmission.

  The cross-sectional shape of the transmission belt 102 is formed into various shapes such as a rectangular cross-section or a V-shaped cross-section according to the power transmission application. FIG. 1C illustrates an example of a transmission belt 102 having a rectangular cross section. The transmission belt 102 includes a rubber layer extending in the circumferential direction. The transmission belt 102 may be configured as a transmission belt having only a rubber layer. The transmission belt 102 may be configured as a transmission belt having a layer other than the rubber layer. For example, the transmission belt 102 may be configured as a transmission belt having a rubber layer and a core wire layer. Further, the transmission belt 102 may be configured as a transmission belt in which the periphery is covered with an outer covering such as canvas, or as a transmission belt in which a layer such as canvas is provided on at least one of the front and back surfaces. It may be configured.

  FIG. 2 is a chart showing an example of the manufacturing process of the transmission belt 102. As shown in FIG. 2, the manufacturing process of the transmission belt 102 includes an unvulcanized sleeve forming step S101, a vulcanizing step S102, and a rubber belt forming step S103.

  In the manufacturing process of the transmission belt 103, first, an unvulcanized sleeve forming step S101 is performed. The unvulcanized sleeve forming step S101 is a step of forming a cylindrical unvulcanized sleeve 101 using an unvulcanized rubber sheet 100 (that is, an unvulcanized rubber sheet 100) as a raw material. It is configured as. The unvulcanized sleeve forming step S101 is performed by using a sheet winding apparatus 1 described later according to the embodiment of the present invention and a sleeve forming system 2 including the sheet winding apparatus 1.

  In the unvulcanized sleeve forming step S101, an unvulcanized rubber sheet 100 is wound around a cylindrical mold by a sheet winding device 1 described later, and the unvulcanized sleeve 101 is formed. When the unvulcanized sleeve forming step S101 is completed, the unvulcanized sleeve 101 disposed around the mold is removed from the sheet winding apparatus 1 together with the mold. In FIG. 1B, the mold is not shown, and only the unvulcanized sleeve 101 is schematically shown.

  A vulcanization step S102 is performed on the unvulcanized sleeve 101 removed from the sheet winding apparatus 1 together with the mold. The vulcanization step S102 is configured as a step of heating the plastic unvulcanized rubber in the unvulcanized sleeve 101 to change it into an elastic rubber. In the vulcanization step S102, for example, the unvulcanized sleeve 101 is accommodated in a vulcanization can while being attached to a mold and vulcanized under conditions such as a predetermined temperature. When the vulcanization step S102 is completed, a vulcanized belt sleeve is obtained. The vulcanizing belt sleeve is removed from the mold.

  When the vulcanization step S102 is completed and the vulcanization belt sleeve is removed from the mold, a rubber belt formation step S103 is performed. The rubber belt forming step S103 is configured as a step of cutting the vulcanized belt sleeve in the circumferential direction to form the transmission belt 102 that is an annular rubber belt. By completing the rubber belt forming step S103, the transmission belt 102 is manufactured.

[Sleeve forming system]
FIG. 3 is a diagram schematically showing a sheet winding apparatus 1 and a sleeve forming system 2 including the sheet winding apparatus 1 according to an embodiment of the present invention. As shown in FIG. 3, the sleeve forming system 2 includes a sheet supply mechanism 11, a sheet cutting mechanism 12, a sheet joining mechanism 13, and a sheet winding device 1.

  The sheet supply mechanism 11 supplies the rubber sheet 100 to the sheet cutting mechanism 12 and the sheet winding apparatus 1 while the unvulcanized rubber sheet 100 is wound in a cylindrical shape and is unwound so as to unwind the rubber sheet 100 from the sheet roll 103. It is configured as a mechanism. In addition, the sheet supply mechanism 11 may have a carriage structure having wheels at the lower part and may be configured to be movable.

  The sheet supply mechanism 11 is provided with, for example, a rotation drive mechanism (not shown) that rotatably supports the sheet roll 103 and rotationally drives the supported sheet roll 103. In addition, the sheet supply mechanism 11 is provided with a pinch roll unit 11a that, for example, feeds the rubber sheet 100 delivered from the sheet roll 103 toward the sheet cutting mechanism 12 along a predetermined pass line. The pinch roll unit 11a has a pair of pinch rolls that sandwich the rubber sheet 100 paid out from the sheet roll 103 from the front and back surfaces. The rubber sheet 100 is fed out toward the sheet cutting mechanism 12 by rotating the pair of pinch rolls in a predetermined direction opposite to each other with the rubber sheet 100 interposed therebetween.

  The sheet cutting mechanism 12 is configured as a mechanism that cuts the rubber sheet 100 supplied from the sheet supply mechanism 11 into a predetermined length. The sheet cutting mechanism 12 includes a cutter unit 12 a that cuts the rubber sheet 100. The cutter unit 12a includes a blade that cuts the rubber sheet 100 along the width direction and the thickness direction and cuts the rubber sheet 100 into a predetermined length.

  FIG. 4 is a view schematically showing a part of the rubber sheet 100 cut by the sheet cutting mechanism 12. 4 shows a state in which a part of the rubber sheet 100 is viewed from the width direction perpendicular to the thickness direction and the longitudinal direction of the rubber sheet 100, and is cut by the cutter portion 12a in the rubber sheet 100. The part and its vicinity are shown. The cutter unit 12 a has a blade that cuts the rubber sheet 100 in a direction that is oblique to the thickness direction of the rubber sheet 100 and that is also oblique to the longitudinal direction of the rubber sheet 100. . As a result, as shown in FIG. 4, the rubber sheet 100 cut by the sheet cutting mechanism 12 has an oblique end face cut along an oblique direction with respect to both the thickness direction and the longitudinal direction. An end 100a is provided.

  Further, the sheet cutting mechanism 12 is provided with pinch roll units (12b, 12c) provided in the front-rear direction of the cutter unit 12a. Note that the front-rear direction of the cutter unit 12 a is the same as the front-rear direction of the sleeve forming system 2. The front-rear direction of the sleeve forming system 2 is configured as a direction in which the rubber sheet 100 is supplied from the sheet supply mechanism 11 to the sheet winding device 1 via the sheet cutting mechanism 12. In FIG. 3, the longitudinal direction of the sleeve forming system 2 is indicated by a double-ended arrow X1. Further, the downstream side from which the rubber sheet 100 is fed is the front side. That is, the side on which the sheet winding device 1 is disposed with respect to the sheet cutting mechanism 12 is the front side. The upstream side from which the rubber sheet 100 is sent out is the rear side. That is, the side on which the sheet supply mechanism 11 is disposed with respect to the sheet cutting mechanism 12 is the rear side.

  Each of the pinch roll unit 12b disposed on the front side of the cutter unit 12a and the pinch roll unit 12c disposed on the rear side of the cutter unit 12a is a pinch roll unit 11a of the sheet supply mechanism 11 and a roll diameter condition. The configuration is substantially the same except for. The pinch roll units (12b, 12c) are configured to rotate in synchronization with the pinch roll unit 11a of the sheet supply mechanism 11. Moreover, when the rubber sheet 100 is cut by the cutter unit 12a, the pinch roll units (12b, 12c) stop rotating and stop supplying the rubber sheet 100. And the pinch roll unit (12b, 12c) rotates in synchronization with the pinch roll unit 11a when the cutting by the cutter unit 12a is not performed and the rubber sheet 100 is supplied by the sheet supply mechanism 11. Then, the rubber sheet 100 is supplied toward the sheet winding apparatus 1.

  The sheet winding device 1 is configured as a device that winds the rubber sheet 100 supplied from the sheet supply mechanism 11 and cut to a predetermined length by the sheet cutting mechanism 12 around the outer periphery 20 a of the rotating body 20. The configuration of the sheet winding apparatus 1 will be described later.

  The sheet joining mechanism 13 is configured as a mechanism for joining both end portions (100a, 100a) of the rubber sheet 100 wound around the outer periphery 20a of the rotating body 20 in the sheet winding apparatus 1. The sheet joining mechanism 13 includes a pressure press part 13a, a vertical drive mechanism 13b, a front / rear drive mechanism 13c, and a support frame 13d.

  The press bonding part 13a is configured as a mechanism for joining both end portions (100a, 100a) of the rubber sheet 100 wound around the outer periphery 20a of the rotating body 20 of the sheet winding apparatus 1 by thermocompression bonding. More specifically, the crimping press part 13a heats both end parts (100a, 100a) of the rubber sheet 100 through the pressing surfaces pressed against both end parts (100a, 100a) of the rubber sheet 100. And a heater for welding.

  The vertical drive mechanism 13b is provided as a mechanism for driving the crimping press portion 13a in the vertical direction. The vertical drive mechanism 13b includes, for example, a cylinder mechanism having a cylinder main body arranged to extend in the vertical direction and a rod that is relatively displaced in the vertical direction with respect to the cylinder main body. The cylinder mechanism in the vertical drive mechanism 13b is configured as an air cylinder mechanism that operates when compressed air is supplied and discharged, for example. In addition, a press-bonding press portion 13a is provided at the lower end portion of the vertical drive mechanism 13b.

  The front-rear drive mechanism 13c is provided as a mechanism that supports the vertical drive mechanism 13b and drives the vertical drive mechanism 13b and the pressure press part 13a in the front-rear direction. Note that the front-rear direction in which the front-rear drive mechanism 13 a drives the up-down drive mechanism 13 b and the crimping press portion 13 a is the same as the front-rear direction of the sleeve forming system 2. The front-rear drive mechanism 13c includes, for example, a ball screw mechanism that includes a screw shaft, a ball screw motor, a bearing, a nut portion, a plurality of balls, and the like. A vertical drive mechanism 13b is supported at the front end of the front / rear drive mechanism.

  The support frame 13d is provided as a structure in which a plurality of frame members are combined in a frame shape. A front-rear drive mechanism 13c that supports a vertical drive mechanism 13b provided with a press-bonding press part 13a is installed at the upper end of the support frame 13d. As a result, the pressing press portion 13a, the vertical drive mechanism 13b, and the front / rear drive mechanism 13c are supported by the support frame 13d.

  When the joining operation of both end portions (100a, 100a) of the rubber sheet 100 is performed by the sheet joining mechanism 13, first, the front / rear drive mechanism 13c is actuated, and the vertical drive mechanism 13b and the pressure press part 13a are the sheet winding device. It drives so that it may be located above the 1 rotary body 20. Next, the vertical drive mechanism 13b is actuated to drive the crimping press portion 13a to descend, and the crimping press portion 13a is wound on both ends (100a) of the rubber sheet 100 wound around the outer periphery 20a of the rotating body 20 of the sheet winding device 1. , 100a) against the pressing surface. Furthermore, in the state in which the pressing surface is pressed against both end portions (100a, 100a) of the rubber sheet 100, the crimping press portion 13a operates the heater to heat both end portions (100a, 100a) of the rubber sheet 100. Thereby, the both ends (100a, 100a) of the rubber sheet 100 wound around the outer periphery 20a of the rotating body 20 of the sheet winding apparatus 1 are joined by thermocompression bonding. The unvulcanized sleeve 101 is formed by joining both ends (100a, 100a) of the rubber sheet 100 at the outer periphery 20a of the rotating body 20.

[Outline of sheet winding device]
FIG. 5 is a front view of the sheet winding apparatus 1 according to the embodiment of the present invention. In FIG. 5, the sheet winding apparatus 1 is schematically illustrated. FIG. 6 is an enlarged view of a part of FIG. 3, and is a view of a part of the sheet winding apparatus 1 as viewed from the side.

  The sheet winding apparatus 1 shown in FIGS. 3, 5, and 6 is configured as an apparatus that winds a sheet around the outer periphery 20 a of the rotating body 20. In this embodiment, the sheet | seat winding apparatus 1 has illustrated the form comprised as an apparatus which winds the sheet | seat comprised as the unvulcanized rubber sheet 100 to the outer periphery 20a of the rotary body 20. FIG. In the following description, the unvulcanized rubber sheet 100 is also simply referred to as a sheet 100.

  As shown in FIGS. 3, 5, and 6, the sheet winding apparatus 1 includes a sheet conveyance mechanism 21, a rotation mechanism 22, a sheet gripping unit 23, a drive mechanism 24, a support mechanism 25, a control panel 26, and the like. Has been.

[Sheet transport mechanism]
The sheet conveyance mechanism 21 includes a conveyance table 21a, a table driving mechanism 21b, a base portion 21c, and the like. The table drive mechanism 21b supports the transfer table 21a. And the base part 21c is supporting the table drive mechanism 21b.

  The conveyance table 21 a is provided as a table for conveying the sheet 100 toward the region between the outer periphery 20 a of the rotating body 20 and the sheet gripping portion 23. The conveyance table 21a has an upper surface that extends in the horizontal direction, and the sheet 100 is placed on the upper surface. The sheet 100 is sent out from the sheet supply mechanism 11 and cut into a predetermined length by the sheet cutting mechanism 12, and is further sent out and placed on the transport table 21a.

  FIG. 7 is a diagram illustrating a part of the conveyance table 21 a of the sheet conveyance mechanism 21 and a part of the sheet gripping unit 23. In FIG. 7, a part including the front end of the transfer table 21 a, that is, a part including the end of the transfer table 21 a facing the rotating body 20 is illustrated.

  As shown in FIGS. 5 and 7, a recess 27 is provided at the end of the transport table 21a so as to be recessed inward from the front end side of the transport table 21a and penetrate in the thickness direction of the transport table 21a. In this embodiment, the recessed part 27 is comprised so that it may dent toward the back side which is an inner side from the front end side of the front side of the conveyance table 21a. A plurality of recesses 27 are provided. And the some recessed part 27 is arrange | positioned along with the width direction of the conveyance table 21a in the edge part of the front side of the conveyance table 21a. Note that the width direction of the transport table 21 a is the same as the width direction of the sheet winding apparatus 1. 5 and 7, the width direction of the sheet winding device 1 is indicated by a double-ended arrow X2.

  The table drive mechanism 21b is configured as a mechanism that supports the transfer table 21a and drives the transfer table 21a. The table drive mechanism 21b includes a fixed portion 28a and a movable portion 28b. The fixed part 28a is fixed to the upper part of the base part 21c. The movable part 28b is disposed on the upper part of the fixed part 28a. A transfer table 21a is installed above the movable portion 28b. The movable portion 28b is configured to be relatively displaced along the front-rear direction of the sleeve forming system 2 with respect to the fixed portion 28a on the fixed portion 28a. The fixed portion 28a and the movable portion 28b of the table drive mechanism 21b are configured to include an air cylinder mechanism including a cylinder body, a rod, and the like, for example. Alternatively, the fixed portion 28a and the movable portion 28b of the table drive mechanism 21b are configured to have a ball screw mechanism including a screw shaft, a ball screw motor, a bearing, a nut portion, a plurality of balls, and the like. The movable portion 28b is provided with an elevating drive mechanism 29 (see FIG. 9 described later) that drives the conveying table 21a installed on the upper portion in the vertical direction. The raising / lowering drive mechanism 29 of the movable part 28b is provided with a plurality of air cylinder mechanisms, for example.

  The table drive mechanism 21b is configured to drive the conveyance table 21a along the front-rear direction of the sleeve forming system 2 by having the above-described configuration. Thereby, the table driving mechanism 21b drives the transport table 21a toward the front, which is a direction approaching the rotating body 20, and drives the transport table 21a toward the rear, which is a direction away from the rotating body 20. It is configured.

  When the sheet 100 sent out from the sheet supply mechanism 11 and cut into a predetermined length by the sheet cutting mechanism 12 is sent out and placed on the transport table 21a, the sheet transport mechanism 21 is operated, and the sheet 100 is operated. Is transported. 8 and 9 are diagrams for explaining the operation of the sheet conveying mechanism 21. FIG.

  When the sheet 100 is conveyed by the sheet conveying mechanism 21, first, as shown in FIG. 8, the movable portion 28b is driven so as to move toward the rotating body 20 on the front side with respect to the fixed portion 28a. . Along with the movement of the movable portion 28b, the conveyance table 21a and the sheet 100 on the conveyance table 21a move toward the front rotating body 20 side. As a result, the sheet 100 is conveyed toward the area between the outer periphery 20 a of the rotating body 20 and the sheet gripping portion 23. When the sheet 100 is conveyed to a state where the front end portion 100a of the sheet 100 is positioned below the rotating body 20, the conveyance of the sheet 100 to the front is stopped.

  When the conveyance of the sheet 100 to the front is completed, then, as shown in FIG. 9, the elevation drive mechanism 29 of the movable portion 28b is operated, and the conveyance table 21a is driven to rise. As a result, the end portion 100a of the sheet 100 is driven to rise to a position in the region between the outer periphery 20a of the rotating body 20 and the sheet gripping portion 23 and in the vicinity of the lower portion of the rotating body 20. When the conveyance table 21a is raised until the end portion 100a of the sheet 100 reaches a position near the lower portion of the rotating body 20, the operation of the lifting drive mechanism 29 of the movable portion 28b is stopped. In this state, the rotation mechanism 22, the sheet gripping unit 23, the drive mechanism 24, and the support mechanism 25, which will be described later, are operated, and the operation of winding the sheet 100 around the outer periphery 20 a of the rotating body 20 is performed.

[Rotation mechanism]
10 and 11 are diagrams showing the rotation mechanism 22, the sheet gripping portion 23, the drive mechanism 24, and the support mechanism 25 in the sheet winding apparatus 1. 10 and 11, a part of the rotation mechanism 22 is not shown. In FIG. 10, a state where the rotating body 20 is not supported by the rotating mechanism 22 is illustrated, and a position where the rotating body 20 is supported is illustrated by a two-dot chain line. On the other hand, FIG. 11 illustrates a state in which the rotating body 20 is supported by the rotating mechanism 22.

  3, 5, 6, 8 to 11 includes a main shaft 30 configured to support the rotating body 20 and to rotationally drive the rotating body 20. As the rotating body 20 that is rotationally driven by the main shaft 30, in the present embodiment, the rotating body 20 is exemplified as a cylindrical mold around which the sheet 100 configured as an unvulcanized rubber sheet 100 is wound. ing. The rotating body 20 is installed in the sheet winding apparatus 1 with the rotation axis direction P extending in the width direction of the sheet winding apparatus 1. In FIG.10 and FIG.11, the rotating shaft direction P of the rotary body 20 is shown with the dashed-dotted line. The cylindrical axis direction of the rotating body 20 that is a cylindrical mold is the rotational axis direction P of the rotating body 20.

  The main shaft 30 is configured, for example, as a metal shaft member in which cylindrical or columnar portions having different diameters are arranged in series along the axial direction. In the sheet winding apparatus 1, the main shaft 30 is arranged with its axial direction extending in the width direction of the sheet winding apparatus 1. Further, a fitting end portion 30 a that fits in a fitting hole (not shown) provided in one end portion of the rotating body 20 is provided at one end portion of the main shaft 30. The fitting hole of the rotating body 20 is provided at one end in the cylindrical axis direction of the rotating body 20 configured as a cylindrical mold. The rotating body 20 is supported by the main shaft 30 by fitting the fitting end portion 30 a of the main shaft 30 into the fitting hole of the rotating body 20.

  The rotation mechanism 22 includes a spindle unit 31, a housing 32, an electric motor 33, a power transmission unit 34, a base unit 35, and the like in addition to the main shaft 30. 10 and 11, the illustration of the base portion 35 is omitted.

  The tail push unit 31 is provided as a mechanism that rotatably supports the rotating body 20 together with the main shaft 30. The tailstock unit 31 includes a tailstock shaft 31a, a shaft drive unit 31b, and the like.

  The tailstock shaft 31 a is provided as a shaft member that supports the rotating body 20 together with the main shaft 30 by being pressed against the other end of the rotating body 20 that is supported by the main shaft 30. The tailstock shaft 31 a is arranged on the same straight line as the main shaft 30 and is arranged along the rotation axis direction P of the rotating body 20. The tailstock shaft 31 a is arranged so as to support the rotating body 20 from both sides in the rotation axis direction P of the rotating body 20 with the rotating body 20 interposed therebetween. Further, the tip 31c, which is the end of the tailstock shaft 31a facing the main shaft 30, is fitted into a fitting hole (not shown) provided in the other end of the rotating body 20 so as to be fitted. It is configured.

  The shaft driving unit 31b is supported by the upper end of the support base 31d, supports the tailstock shaft 31a so as to be displaceable along the axial direction, and drives the tailstock shaft 31a to project and retract along the axial direction. It is comprised as a drive mechanism. The shaft drive unit 31b includes a fluid cylinder mechanism such as an air cylinder mechanism or a hydraulic cylinder mechanism, for example. Then, the shaft driving unit 31b drives the tailstock shaft 31a to protrude from the shaft driving unit 31b toward the other end of the rotating body 20 supported by the main shaft 30. Further, the shaft driving unit 31b drives the tail pushing shaft 31a from the other end of the rotating body 20 supported by the main shaft 30 so as to retract toward the shaft driving unit 31b. FIG. 10 shows a state where the tailstock shaft 31a is retracted to the shaft driving portion 31b. On the other hand, FIG. 11 illustrates a state in which the tailstock shaft 31a protrudes from the shaft drive portion 31b, and the rotating body 20 is rotatably supported around the rotation shaft by the main shaft 30 and the tailstock shaft 31a.

  The housing 32 is provided as a housing that rotatably supports the main shaft 30 and houses the electric motor 33. In the housing 32, the main shaft 30 is rotatably supported via a bearing not shown. The housing 32 is installed on the base part 35. The electric motor 33 is provided as an electric motor that generates a driving torque for rotationally driving the main shaft 30. A power transmission unit 34 having a sprocket and a chain is provided between the electric motor 33 and the main shaft 30. When driving of the electric motor 33 is performed and driving torque is generated, the driving torque is transmitted to the main shaft 30 via the power transmission unit 34, and the main shaft 30 is rotationally driven around the axis.

[Sheet gripper]
FIG. 12 is a diagram illustrating the conveyance table 12 a and the sheet gripping unit 23 of the sheet conveyance mechanism 21 together with a part of the sheet 100. The sheet gripping portion 23 shown in FIGS. 3 and 5 to 12 approaches the outer periphery 20a of the rotating body 20 supported by the main shaft 30 so that the end of the sheet 100 is located between the outer periphery 20a of the rotating body 20 and the outer periphery 20a. It is comprised so that it may hold | grip across the part 100a. The sheet gripping portion 23 is driven so as to approach the outer periphery 20a of the rotating body 20 by being driven by a drive mechanism 24 described later. The sheet gripping portion 23 includes a gripping main body portion 23a, a base end portion 23b, a plurality of convex portions 23c, and the like.

  The grip body portion 23 a is configured as a portion of the sheet grip portion 23 that extends along a direction parallel to the rotational axis direction P of the rotating body 20. Therefore, the grip main body 23 a is configured to extend along the width direction of the sheet winding device 1. The grip body part 23 a is formed in a shape having a longitudinal direction, and the longitudinal direction of the grip body part 23 a is parallel to the rotational axis direction P of the rotating body 20. In addition, the grip body 23a is provided, for example, so as to extend along the longitudinal direction with a substantially rectangular cross section.

  The base end portion 23b is provided as a portion that supports the grip main body portion 23a. The base end portion 23a is provided as a portion continuous to one end portion of the grip main body portion 23a. For example, the base end portion 23a is provided integrally with one end portion of the gripping main body portion 23a, or one end portion of the gripping main body portion 23a is fixed. For this reason, in the present embodiment, the gripping main body portion 23a is provided so as to extend in a cantilever manner from the base end portion 23b along a direction parallel to the rotation axis direction P of the rotating body 20. Moreover, in this embodiment, the base end part 23b has a part extended along the direction perpendicular | vertical with respect to the longitudinal direction of the holding | maintenance main-body part 23a.

  When the sheet gripping portion 23 approaching the outer periphery 20a of the rotating body 20 grips the end portion 100a of the sheet 100 with the outer periphery 20a of the rotating body 20, the convex portion 23c holds the end portion of the sheet 100. It is provided as a part that contacts 100a. The convex portion 23 c presses the end portion 100 a of the sheet 100 toward the outer periphery 20 a of the rotating body 20 when the sheet gripping portion 23 holds the end portion 100 a of the sheet 100 with the rotating body 20. It is provided as a part to do.

  In the sheet gripping portion 23, a plurality of convex portions 23c are provided. Each convex portion 23c is fixed to the grip body portion 23a on the surface of the grip body portion 23b that faces the outer periphery 20a of the rotating body 20. Each convex part 23c is comprised with the resin material or the rubber material, for example, is comprised for a polyurethane as a raw material. In this embodiment, each convex part 23c comprised with the resin material or the rubber material is being fixed to the holding | grip main-body part 23a comprised with the metal material. Each convex portion 23c is provided so as to protrude in a substantially rectangular parallelepiped shape toward the outer periphery 20a of the rotating body 20 from the surface facing the outer periphery 20a of the rotating body 20 in the grip main body portion 23a.

  The plurality of convex portions 23c are arranged in a line along the longitudinal direction of the grip main body portion 23a. In other words, the plurality of convex portions 23 c are arranged in a line along the direction parallel to the rotational axis direction P of the rotating body 20 in the grip main body portion 23 a. And each convex part 23c is arrange | positioned corresponding to each recessed part 27 of the conveyance table 21a, and is arrange | positioned in the position facing each recessed part 27. FIG. For this reason, the plurality of convex portions 23 c are arranged in a line corresponding to the plurality of concave portions 27 in the sheet gripping portion 23.

  In addition, the dimension of each convex portion 23c in the direction parallel to the rotational axis direction P of the rotator 20 is substantially the same as the dimension of each concave portion 27 in the direction parallel to the rotational axis direction P of the rotator 20; Or it is set to a small size. For this reason, each convex part 23c has an inner side of each concave part 27 inside each concave part 23c when the sheet gripping part 23 is driven by the drive mechanism 24 described later so as to approach the outer periphery 20a of the rotating body 20. A part is configured to be able to pass. In the sheet winding device 1, the sheet gripping portion 23 is in a state where the end portion 100 a of the sheet 100 transported by the transport table 21 a is disposed in the region between the outer periphery 20 a of the rotating body 20 and the sheet gripping portion 23. Is driven so as to approach the outer periphery 20a of the rotating body 20. At this time, at least a part of each convex portion 23 c passes inside each concave portion 27, so that the end portion 100 a of the sheet 100 pressed by each convex portion 23 c is pressed against the outer periphery 20 a of the rotating body 20. . Thereby, the edge part 100a of the sheet | seat 100 is pinched and hold | gripped between the outer periphery 20a of the rotary body 20, and each convex part 23c.

[Drive mechanism]
FIG. 13 is an enlarged view of a part of FIG. 10, and shows the drive mechanism 24 and the support mechanism 25 of the sheet winding apparatus 1 and the vicinity thereof. The drive mechanism 24 shown in FIGS. 3, 5, 6, 8 to 11, and 13 is configured as a mechanism that drives the sheet gripping portion 23 to approach and separate from the outer periphery 20 a of the rotating body 20. ing.

  The drive mechanism 24 includes a pair of cylinder units (36, 36). Each of the pair of cylinder units (36, 36) holds the sheet gripping portion 23 and is supported by the rotation mechanism 22 via a support mechanism 25 described later. The pair of cylinder units (36, 36) are arranged on both sides of the main shaft 30. The pair of cylinder units (36, 36) are arranged side by side along the longitudinal direction of the base end portion 23b. That is, the pair of cylinder units (36, 36) are arranged side by side along a direction perpendicular to the longitudinal direction of the grip main body 23a. Each of the pair of cylinder units (36, 36) holds the sheet gripping portion 23.

  Each of the pair of cylinder units (36, 36) includes a cylinder body 36a and a rod 36b provided so as to be displaced relative to the cylinder body 36a. Each cylinder unit 36 is configured as an air cylinder mechanism that operates when compressed air is supplied and discharged, for example. Each cylinder unit 36 is arranged in a state extending along a direction perpendicular to the base end portion 23b.

  One end of each cylinder unit 36 a is supported by a support mechanism 25 described later. The rod 36b of each cylinder unit 36 is configured to be extendable and contractable with respect to the cylinder body 36a. That is, the rod 36b is configured to be retracted from the cylinder body 36a or extended and projected from the cylinder body 36a by supplying and discharging a working fluid such as compressed air to the cylinder body 36a. Yes. A base end portion 23b of the sheet gripping portion 23 is fixed to an end portion of the rod 36b opposite to the cylinder body 36a side.

  Since each of the cylinder units 36 has the cylinder body 36a and the rod 36b configured as described above, the rod 36b is relatively displaced with respect to the cylinder body 36a, so that the sheet gripping portion 23 of the rotating body 20 is moved. It is comprised so that it may drive so that it may approach and separate with respect to the outer periphery 20a. In the present embodiment, each cylinder unit 36 is configured to bring the sheet gripping portion 23 closer to the outer periphery 20a of the rotating body 20 by retracting the rod 36b with respect to the cylinder body 36a. And each cylinder unit 36 is comprised so that the sheet | seat holding part 23 may be spaced apart from the outer periphery 20a of the rotary body 20, when the rod 36b expand | extends and protrudes from the cylinder main body 36a. The pair of cylinder units (36, 36) are configured to operate in synchronization. That is, each of the pair of cylinder units (36, 36) is configured to contract at the same timing and to extend and project at the same timing.

  14 and 15 are views for explaining the operation of the drive mechanism 24 of the sheet winding apparatus 1. 14 illustrates a state in which the driving mechanism 24 separates the sheet gripping portion 23 from the outer periphery 20a of the rotating body 20, and grips the end portion 100a of the sheet 100 by the sheet gripping portion 23 and the driving mechanism 24. A state in which no operation is performed is illustrated. On the other hand, FIG. 15 illustrates a state in which the driving mechanism 24 brings the sheet gripping portion 23 closer to the outer periphery 20a of the rotating body 20, and the end portion 100a of the sheet 100 by the sheet gripping portion 23 and the driving mechanism 24 is illustrated. A state in which the gripping operation is performed is illustrated.

  In the state before the sheet 100 is gripped by the sheet gripping portion 23 and the driving mechanism 24, as shown in FIG. 14, each rod 36b protrudes from each cylinder body 36a, and the sheet gripping portion 23 is a rotating body. It is located at a position away from the outer periphery 20a of the 20. Then, the conveyance operation of the sheet 100 by the sheet conveyance mechanism 21 is completed, and the end portion 100a of the sheet 100 is arranged in the region between the outer periphery 20a of the rotating body 20 and the sheet gripping portion 23.

  In the above-described state shown in FIG. 14, the drive mechanism 24 operates and the gripping operation of the end portion 100 a of the sheet 100 is performed. In this gripping operation, the drive mechanism 24 drives the rod 36b of each cylinder unit 36 so as to retract into the cylinder body 36a so that the sheet gripping portion 23 approaches the outer periphery 20a of the rotating body 20. As a result, as shown in FIG. 15, the end portion 100 a of the sheet 100 is sandwiched and gripped between the sheet gripping portion 23 and the outer periphery 20 a of the rotating body 20. Further, when the sheet gripping portion 23 approaches the outer periphery 20a of the rotating body 20, each convex portion 23c of the sheet gripping portion 23 has an end portion on the opposite side to the gripping main body portion 23a side, and each concave portion of the transport table 21a. Pass 27. And each convex part 23c presses the edge part 100a of the sheet | seat 100 toward the rotary body 20 side, and the edge part 100a of the sheet | seat 100 is pressed on the outer periphery 20a of the rotary body 20. FIG. Thereby, the edge part 100a of the sheet | seat 100 is pinched and hold | gripped between the outer periphery 20a of the rotary body 20, and each convex part 23c.

[Support mechanism]
FIG. 16 is an enlarged view of a part of FIG. 13 and shows the clutch 37 and its vicinity in the support mechanism 25 of the sheet winding apparatus 1. The support mechanism 25 shown in FIGS. 5, 10, 11, 13 to 16 is configured as a mechanism that rotatably supports the sheet gripping portion 23 and the driving mechanism 24 together with the rotating body 20 with respect to the rotating mechanism 22. Yes. The support mechanism 25 includes a clutch 37, a drive mechanism connecting portion 38, and the like.

  The clutch 37 has a coupling state in which the driving mechanism 24 holding the sheet gripping portion 23 is coupled to the rotating mechanism 22 so as to rotate together with the rotating body 20, and a power transmission path between the rotating mechanism 22 and the driving mechanism 24. It is configured to be switchable between an unconnected state where the connected state is released by blocking. The clutch 37 includes a first clutch unit 39 and a second clutch unit 40 that switch the state between the sheet gripping unit 23 and the drive mechanism 24 and the rotation mechanism 22. The state between the sheet gripping portion 23 and the drive mechanism 24 and the rotation mechanism 22 is the above-described connected state when the first clutch portion 39 is connected to the second clutch portion 40. When the connection with the two-clutch unit 40 is disconnected, the above-described disengaged state is achieved.

  The first clutch part 39 and the second clutch part 40 are arranged side by side along the axial direction of the main shaft 30 of the rotation mechanism 22. The first clutch portion 39 is disposed on the housing 32 side of the rotation mechanism 22, and the second clutch portion 40 is disposed on the rotating body 20 side. The first clutch part 39 and the second clutch part 40 are arranged so that the axis of the first clutch part 39 and the axis of the second clutch part 40 coincide with the axis of the main shaft 30. .

  Further, the first clutch portion 39 includes a first cylindrical portion 39a, a first friction plate 39b, a solenoid actuator not shown, and the like. The second clutch portion 40 includes a second cylindrical portion 40a, a second friction plate 40b, and the like.

  The first cylindrical portion 39a is provided as a cylindrical member disposed concentrically with the main shaft 30, and the main shaft 30 passes through the central through hole. For example, the first cylindrical portion 39 a allows relative displacement of the first cylindrical portion 39 a along the axial direction of the main shaft 30 with respect to the main shaft 30, while the relative rotation of the first cylindrical portion 39 a around the axis of the main shaft 30. It is connected via a key slide structure that restricts the movement. Thus, the first cylindrical portion 39 a is connected to the main shaft 30 so as to be capable of relative displacement along the axial direction of the main shaft 30 and is connected to rotate together with the main shaft 30.

  The first friction plate 39b is provided as an annular and disk-shaped member having a through-hole through which the main shaft 30 passes in the center. The first friction plate 39b is integrally fixed to the first cylindrical portion 39a. When the first cylindrical portion 39a rotates with the main shaft 30, the first friction plate 39b rotates with the first cylindrical portion 39a. The first friction plate 39b is fixed to the first cylindrical portion 39a at the end portion facing the second clutch portion 40. In addition, the friction surface in which the uneven | corrugated shape which meshes with the 2nd friction board 40b of the 2nd clutch part 40 was formed in the end surface facing the 2nd clutch part 40 in the 1st friction board 39b.

  A solenoid actuator (not shown) of the first clutch portion 39 is built in the first cylindrical portion 39a. The solenoid actuator includes a solenoid and is provided as an actuator that displaces the first cylindrical portion 39 a relative to the main shaft 30 along the axial direction of the main shaft 30. When the solenoid actuator is in an excited state, it drives the first cylindrical portion 39a to which the first friction plate 39b is fixed to be displaced toward the second clutch portion 40.

  The second cylindrical portion 40 a is provided as a cylindrical member arranged concentrically with the main shaft 30, and the main shaft 30 passes through the central through hole. The first cylindrical portion 39 a is disposed so as to be rotatable relative to the main shaft 30 around the axis of the main shaft 30. For this reason, the second cylindrical portion 40 a is configured not to rotate with the main shaft 30 even when the main shaft 30 rotates in a state where the first clutch portion 39 is not connected to the second clutch portion 40.

  The second friction plate 40b is provided as an annular and disk-shaped member provided with a through hole through which the main shaft 30 passes in the center. The second friction plate 40b is integrally fixed to the second cylindrical portion 40a and rotates together with the second cylindrical portion 40a. Further, the second friction plate 40b is fixed to the second cylindrical portion 40a at the end portion on the side facing the first clutch portion 39. In addition, the friction surface in which the uneven | corrugated shape which meshes with the 1st friction board 39b of the 1st clutch part 39 was formed in the end surface facing the 1st clutch part 39 in the 2nd friction board 40b is provided.

  FIG. 17 is a view for explaining the operation of the clutch 37. FIG. 16 shows a state in which the first clutch portion 39 and the second clutch portion 40 are not connected and the clutch 37 is switched to the above-described non-connected state. On the other hand, FIG. 17 shows a state in which the first clutch portion 39 and the second clutch portion 40 are connected and the clutch 37 is switched to the above-described connected state.

  In the non-connected state shown in FIG. 16, when the solenoid actuator of the first clutch portion 39 is in an excited state, the first cylindrical portion 39 a to which the first friction plate 39 b is fixed moves to the main shaft 30 along the axial direction of the main shaft 30. On the other hand, it is displaced relative to the second clutch portion 40. Accordingly, as shown in FIG. 17, the first friction plate 39a of the first clutch portion 39 comes into contact with the second friction plate 40b of the second clutch portion 40, and the first clutch portion 39 and the second clutch portion are brought into contact with each other. 40 is connected. Thereby, a power transmission path for transmitting the rotational driving force around the main shaft 30 is formed between the first clutch portion 39 and the second clutch portion 40.

  On the other hand, in the coupled state shown in FIG. 17, when the solenoid actuator of the first clutch portion 39 is demagnetized, the position of the first cylindrical portion 39a is in the state shown in FIG. 16 due to the elastic force of the spring built in the solenoid actuator. Will return. That is, the first cylindrical portion 39 a is displaced relative to the main shaft 30 along the axial direction of the main shaft 30, and is displaced in a direction away from the second clutch portion 40. Accordingly, as shown in FIG. 16, the first friction plate 39 a of the first clutch portion 39 is separated from the second friction plate 40 b of the second clutch portion 40, and the first clutch portion 39 and the second clutch portion 40 are separated from each other. The connection is disconnected. Thereby, the power transmission path for transmitting the rotational driving force around the main shaft 30 between the first clutch part 39 and the second clutch part 40 is interrupted.

  The drive mechanism connecting portion 38 of the support mechanism 25 is provided as a structure for connecting the second clutch portion 40 of the clutch 37 and the drive mechanism 24, and includes a connecting frame 41, a bracket 42, and the like.

  For example, the connection frame 41 is provided as a plate-like member in which a through hole through which the main shaft 30 passes is formed, and is fixed to the second cylindrical portion 40 a of the second clutch portion 40. The connection frame 41 is fixed to the second cylindrical portion 40a at the end opposite to the first clutch portion 39 side. The connection frame 41 has a longitudinal direction. And the connection frame 41 is arrange | positioned so that the longitudinal direction may extend along the direction parallel to the direction where the rod 36b expands / contracts with respect to the cylinder main body 36a in the cylinder unit 36.

  The connecting frame 41 is provided with a rail portion 41a that supports the base end portion 23b of the sheet gripping portion 23 so as to be slidable. When the rod 36b expands and contracts with respect to the cylinder main body 36a in the cylinder unit 36, the base end portion 23b of the sheet gripping portion 23 fixed to the end portion of the rod 36b slides along the rail portion 41a. Thereby, when the rod 36b expands and contracts with respect to the cylinder body 36a, the sheet gripping portion 23 driven by the rod 36b is driven in a stable state along the rail portion 41a.

  The bracket 42 is provided as a member for installing the drive mechanism 24 with respect to the connection frame 41 fixed to the second clutch portion 40 of the clutch 37. In the present embodiment, the bracket 42 is fixed to the connecting frame 41, and the end of the cylinder body 36 a of the cylinder unit 36 of the drive mechanism 24 is fixed.

  The drive mechanism connecting portion 38 includes the connecting frame 41 and the bracket 42 having the above-described configuration, thereby supporting the drive mechanism 24 with respect to the second clutch portion 40 of the clutch 37.

  Since the support mechanism 25 includes the clutch 37 and the drive mechanism connecting portion 38 having the above-described configuration, the sheet gripping portion 37 and the drive mechanism 24 can be rotated together with the rotating body 20 with respect to the rotation mechanism 22. I support it.

  In the support mechanism 25, the clutch 37 is switched to the connected state by connecting the first clutch portion 39 and the second clutch portion 40. In a state where the clutch 37 is switched to the connected state, when the main shaft 30 rotates together with the rotating body 20, the first cylindrical portion 39a and the first friction plate 39b rotate together with the main shaft 30, and the second friction plate together with the first friction plate 39b. 40b and the second cylindrical portion 40a rotate. Then, the drive mechanism connecting portion 38 rotates around the axis of the main shaft 30 together with the second cylindrical portion 40a, and together with the drive mechanism connecting portion 38, the drive mechanism 24 and the sheet gripping portion 23 held by the drive mechanism 24 are connected to the main shaft. Rotates around 30 axes. As a result, the sheet gripping part 23 and the drive mechanism 24 rotate together with the rotating body 20. Thus, when the first clutch portion 39 and the second clutch portion 40 are connected, the clutch 37 rotates the drive mechanism 24 holding the sheet gripping portion 23 together with the rotating body 20 with respect to the rotating mechanism 22. It will be switched to the connected state connected to.

  Further, in the support mechanism 25, the clutch 37 is switched to the non-connected state by disconnecting the connection between the first clutch part 39 and the second clutch part 40. In a state where the clutch 37 is switched to the non-connected state, the first friction plate 39a is separated from the second friction plate 40b, and the rotational driving force around the main shaft 30 is between the first clutch portion 39 and the second clutch portion 40. The power transmission path for transmitting is interrupted. Therefore, in the state where the clutch 37 is switched to the non-connected state, when the main shaft 30 rotates together with the rotating body 20, the first cylindrical portion 39a and the first friction plate 39b rotate together with the main shaft 30, but the second friction plate 40b. And the 2nd cylindrical part 40a does not rotate. And since the 2nd cylindrical part 40a does not rotate, the drive mechanism connection part 38 fixed to the 2nd cylindrical part 40a, the drive mechanism 24 installed in the drive mechanism connection part 38, the sheet | seat grip part hold | maintained at the drive mechanism 24 23 also does not rotate. As described above, when the connection between the first clutch portion 39 and the second clutch portion 40 is disconnected, the clutch 37 interrupts the power transmission path between the rotation mechanism 22 and the drive mechanism 24 and releases the connected state. It will be switched to the unconnected state.

[control panel]
The control panel 26 shown in FIGS. 3, 5, 8, 9, 14, and 15 is provided as a control device that controls the operation of the sheet winding device 1. The sheet conveyance mechanism 21, the rotation mechanism 22, the drive mechanism 24, and the support mechanism 25 of the sheet winding apparatus 1 operate based on a control command from the control panel 26.

  The control panel 26 includes a hardware processor such as a CPU, a memory, an operation panel operated by a user, an operation unit such as a foot switch, an interface circuit, and the like. The memory of the control panel 26 stores a program for creating a control command for controlling the operation of the sheet conveyance mechanism 21, the rotation mechanism 22, the drive mechanism 24, and the support mechanism 25. When the operation unit is operated by the user, the above program is read from the memory by the hardware processor and executed. As a result, the control command is created, and the sheet transport mechanism 21, the rotation mechanism 22, the drive mechanism 24, and the support mechanism 25 are operated based on the control command.

  The sheet conveying mechanism 21 is configured such that the table driving mechanism 21b is operated based on a control command from the control panel 26 and the sheet 100 is conveyed by the conveying table 21a. The rotation mechanism 22 is configured such that the electric motor 33 is operated based on a control command from the control panel 26 and rotates the main body 30 to rotate the rotating body 20. Based on a control command from the control panel 26, the drive mechanism 24 controls a control valve (not shown) that controls the supply and discharge of compressed air so that the cylinder unit 36 operates and drives the seat gripping portion 23. It is configured. The support mechanism 25 is configured so that the operation of the solenoid actuator of the first clutch unit 39 is controlled based on a control command from the control panel 26 and the clutch 37 is switched between a connected state and a non-connected state. .

[Operation of sheet winding device]
Next, the operation of the sheet winding apparatus 1 will be described. In addition, when the sheet winding apparatus 1 and the sleeve forming system 2 including the sheet winding apparatus 1 are operated, the unvulcanized sleeve forming step S101 in the manufacturing process of the transmission belt 102 shown in FIG. 2 is performed. . Hereinafter, the operation of the sheet winding apparatus 1 will be described, and the unvulcanized sleeve forming step S101 will also be described.

  FIG. 18 is a chart showing an example of the unvulcanized sleeve forming step S101. In the unvulcanized sleeve forming step S101, the unvulcanized sleeve 101 is formed from the sheet 100. As shown in FIG. 18, the unvulcanized sleeve forming step S101 includes a sheet cutting step S201, a sheet conveying step S202, a sheet winding step S203, a joining step S204, and a nonwoven fabric winding step S205.

  When the unvulcanized sleeve forming step S <b> 101 is performed, first, the rotating body 20 configured as a cylindrical mold is attached to the sheet winding apparatus 1. The rotating body 20 is carried to a predetermined position between the main shaft 30 and the tailstock shaft 31a in the sheet winding apparatus 1 by, for example, a mold conveyance carriage (not shown). The rotating body 20 is supported by the main shaft 30 and the tail shaft 31a in a state where the rotating body 20 is carried to a predetermined position. When the support of the rotating body 20 by the main shaft 30 and the tailstock shaft 31a is completed, the mold conveyance carriage is removed, and the installation of the rotating body 20 on the sheet winding apparatus 1 is completed (see FIGS. 5 and 11).

  When the installation of the rotating body 20 to the sheet winding apparatus 1 is completed, the sheet cutting step S201 is performed. The sheet cutting step S201 is performed by operating the sheet supply mechanism 11 and the sheet cutting mechanism 12. In the sheet cutting step S201, the sheet supply mechanism 11 supplies the sheet 100 to the sheet cutting mechanism 12 while discharging the sheet 100 from the sheet roll 103 (see FIG. 3). Then, the sheet cutting mechanism 12 cuts the sheet 100 supplied from the sheet supply mechanism 11 into a predetermined length. The predetermined length of the sheet 100 cut by the sheet cutting mechanism 12 is set to a length corresponding to the circumferential length of the outer periphery 20a of the rotating body 20.

  In the sheet cutting mechanism 12, the sheet 100 is cut obliquely so that both ends (100a, 100a) of the sheet 100 can be easily joined by the sheet winding apparatus 1. That is, as described above, the sheet 100 includes the end portion 100a having an oblique end surface cut along the oblique direction with respect to both the thickness direction and the longitudinal direction of the sheet 100 by the cutter portion 12a. (See FIG. 4).

  The sheet 100 cut to a predetermined length at the end portion 100 a by the sheet cutting mechanism 12 is sent out and placed on the transport table 21 a of the sheet transport mechanism 21. The sheet 100 is placed on the transport table 21a such that the end portion 100a disposed on the front side is positioned above the plurality of recesses 27 in the transport table 21a so as to cover the plurality of recesses 27.

  When the sheet cutting step S201 is completed and the sheet 100 is placed on the conveyance table 21a of the sheet conveyance mechanism 21, the sheet conveyance step S202 is then performed. The sheet conveying step S202 is performed by operating the sheet winding apparatus 1, and more specifically, is performed by operating the sheet conveying mechanism 21 of the sheet winding apparatus 1.

  In the sheet conveying step S202, the table driving mechanism 21b drives the conveying table 21a based on a control command from the control panel 26, whereby the sheet 100 is conveyed. More specifically, based on a control command from the control panel 26, first, the movable portion 28b and the transport table 21a are driven so as to move forward. Then, the sheet 100 is conveyed until the front end portion 100a of the sheet 100 on the conveyance table 21a is arranged in a region between the outer periphery 20a of the rotating body 20 and the sheet gripping portion 23 (see FIG. 8). reference). The fixed portion 28a and the movable portion of the table drive mechanism 21b are stopped so that the end portion 100a of the sheet 100 is conveyed to a predetermined position in the region between the outer periphery 20a of the rotating body 20 and the sheet gripping portion 23 and stopped. The stroke end of the air cylinder mechanism or ball screw mechanism provided in 28b is set.

  When the forward conveyance of the sheet 100 is completed, the elevation drive mechanism 29 of the movable portion 28a is operated based on the control command from the control panel 26, and the conveyance table 21a is raised. Then, when the end portion 100a of the sheet 100 rises to a predetermined position near the lower portion of the rotating body 20 in the region between the outer periphery 20a of the rotating body 20 and the sheet gripping portion 23, the operation of the lifting drive mechanism 29 is stopped. The raising operation of the transport table 21a is stopped (see FIGS. 9 and 14). For example, a photoelectric sensor (not shown) is installed on the transfer table 21a. When the transport table 21a is raised, the control panel 26 stops the operation of the lifting drive mechanism 29 based on the detection result by the photoelectric sensor, and the transport table 21a stops at a predetermined position. In addition, the stop position of the conveyance table 21a is detected by the light projected from the photoelectric sensor being blocked by the rotating body 20 which is a mold, for example.

  When the sheet conveying step S202 is completed and the end portion 100a of the sheet 100 is disposed at a predetermined position in the region between the outer periphery 20a of the rotating body 20 and the sheet gripping portion 23, the sheet winding step S203 is then performed. The The sheet winding step S203 is performed by operating the sheet winding apparatus 1, and more specifically, is performed by operating the support mechanism 25, the drive mechanism 24, the sheet gripping portion 23, and the rotation mechanism 22 of the sheet winding apparatus 1. The

  In the sheet winding step S203, first, the clutch 37 of the support mechanism 25 is operated based on a control command from the control panel 26, the first clutch portion 39 and the second clutch portion 40 are connected, and the clutch 37 is in a connected state. (See FIG. 17). When the clutch 37 is switched to the connected state, the drive mechanism 24 is then operated based on the control command from the control panel 26, and the gripping operation of the end portion 100a of the sheet 100 by the sheet gripping portion 23 is performed.

  When the gripping operation of the end portion 100a of the sheet 100 is performed, the drive mechanism 24 operates in the state shown in FIG. At this time, in the drive mechanism 24, the rod 36b of each cylinder unit 36 is retracted to the cylinder body 36a, causing the sheet gripping portion 23 to approach the outer periphery 20a of the rotating body 20. Then, as shown in FIG. 15, the end portion 100 a of the sheet 100 is sandwiched and gripped between the sheet gripping portion 23 and the outer periphery 20 a of the rotating body 20. Further, during this gripping operation, each convex portion 23c of the sheet gripping portion 23 passes through each concave portion 27 of the transport table 21a, and each convex portion 23c faces the end portion 100a of the sheet 100 toward the rotating body 20 side. And press. Then, the end portion 100a of the sheet 100 is pressed against the outer periphery 20a of the rotating body 20, and the end portion 100a of the sheet 100 is sandwiched and held between the outer periphery 20a of the rotating body 20 and each convex portion 23c.

  When the gripping operation of the end portion 100a of the sheet 100 by the sheet gripping portion 23 is completed, the table driving mechanism 21b of the sheet transport mechanism 21 is operated based on the control command from the control panel 26, and the movable portion 28b and the transport table 21a are moved. Driven to move backward by a predetermined distance. Thereby, each convex part 23c of the sheet | seat holding | grip part 23 will have remove | deviated from each concave part 27 of the conveyance table 21a.

  As described above, when the end portion 100 a of the sheet 100 is gripped by the sheet gripping portion 23, the rotation mechanism 22 is activated based on the control command from the control panel 26, and the sheet 100 is moved to the outer periphery of the rotating body 20. A winding operation to be wound around 20a is performed. Note that the sheet gripping unit 23 includes, for example, a pressure sensor that detects a pressing pressure at which each convex portion 23 c presses the end 100 a of the sheet 100 toward the rotating body 20. And before winding operation | movement of the sheet | seat 100 is performed, it is confirmed by the control panel 26 whether the sheet | seat 100 is hold | gripped with appropriate press pressure based on the detection result by a pressure sensor. For example, if the pressing pressure detected by the pressure sensor is within a predetermined range, the control panel 26 determines that the sheet 100 is gripped with an appropriate pressing pressure.

  As described above, when it is determined that the sheet 100 is gripped with an appropriate pressing pressure, the electric motor 33 of the rotation mechanism 22 is operated based on a control command from the control panel 26. Then, the driving torque of the electric motor 33 is transmitted to the main shaft 30 via the power transmission unit 34, and the main shaft 30 rotates about the axis together with the rotating body 20. At this time, since the clutch 37 is switched to the connected state, the drive mechanism 24 that holds the sheet gripping portion 23 in a state where the end portion 100a of the sheet 100 is pressed against the outer periphery 20a of the rotating body 20 includes the spindle 30 and the rotating body. Rotate synchronously with 20. Based on a control command from the control panel 26, the main shaft 30, the rotating body 20, the drive mechanism 24, and the sheet gripping portion 23 are rotated at least once around the axis of the main shaft 30 (that is, at least 360 degrees). The rotation mechanism 22 is controlled so that it rotates. The rotational angle position of the main shaft 30 is detected by an encoder provided in the electric motor 33. The control panel 26 controls the rotational angle position of the main shaft 30 based on the detection result by the encoder.

  In addition, when the main shaft 30, the rotating body 20, the drive mechanism 24, and the sheet gripping portion 23 make one rotation, at a stage where the spindle 30 is rotated by about 3/4 (that is, at a stage where it is rotated by about 270 degrees), The rotation operation is stopped. At that stage, the table drive mechanism 21b retracts the transport table 21a based on a control command from the control panel 26. In other words, the table driving mechanism 21b lowers the conveyance table 21a and retracts the conveyance table 21a so as to return to the position before the sheet 100 is conveyed. When the main shaft 30, the rotating body 20, the drive mechanism 24, and the sheet gripping portion 23 are rotated about 3/4, the retraction operation of the transport table 21a is performed, so that the sheet gripping portion 23 is placed on the transport table 21a. Collisions are prevented. By preventing the sheet gripping portion 23 from colliding with the transport table 21a, the sheet 100 is prevented from falling off during the winding operation of the sheet 100.

  When the above retracting operation of the transport table 21a is completed, the main shaft 30, the rotating body 20, the drive mechanism 24, and the sheet gripping portion 23 are rotated so as to perform the remaining rotation based on a control command from the control panel 26. The mechanism 22 is controlled. When the main shaft 30, the rotating body 20, the driving mechanism 24, and the sheet gripping portion 23 are rotated at least once, the sheet 100 is wound around the entire circumference of the outer periphery 20 a of the rotating body 20. When the sheet 100 is wound by one turn over the entire circumference of the outer periphery 20a of the rotating body 20, both end portions (100a, 100a) of the sheet 100 are in a state in which oblique end surfaces are in close contact with each other. And the part which the diagonal end surfaces in the both ends (100a, 100a) of the sheet | seat 100 closely_contact | adhered becomes a junction part of the both ends (100a, 100a) of the sheet | seat 100. FIG.

  The rotation angle position at which the rotation of the main shaft 30 and the like during the winding operation of the sheet 100 is stopped is set according to the rotation angle position desired as the position of the joint portion between both ends (100a, 100a) of the sheet 100. . Accordingly, the rotation of the main shaft 30 and the like is not limited to a mode in which the rotation of the main shaft 30 or the like is stopped at a position rotated by one rotation from the winding start position of the sheet 100 where the gripping operation by the sheet gripping unit 23 is performed. A mode in which the rotation of the main shaft 30 and the like is stopped at the rotated position is also appropriately implemented. The control panel 26 controls the rotational angle position at which the main shaft 30 and the like are stopped based on the detection result by the encoder of the electric motor 33.

  When the rotation of the main shaft 30 or the like is stopped, the joints at both ends (100a, 100a) of the sheet 100 are subjected to a temporary crimping process or a temporary fixing process as necessary before the joining step S204 is performed. Is done. For example, a temporary press-bonding process by thermocompression using a hand iron is performed by an operator on the joints at both ends (100a, 100a) of the sheet 100. Alternatively, a temporary fixing process using an adhesive tape is performed by an operator on the joint portion of both end portions (100a, 100a) of the sheet 100.

  When the temporary crimping process or the temporary fixing process is performed, based on a control command from the control panel 26, the rotation mechanism 22 and the drive mechanism 24 are operated, and the sheet gripping unit 23 grips the sheet 100. It is driven to return to the previous state position. FIG. 19 is a diagram for explaining the operation of the sheet winding apparatus 1, and shows a state in which the rotation mechanism 22 is operated and the sheet gripping portion 23 is driven to return to a position below the rotating body 20. FIG. When the temporary press-bonding process or the temporary fixing process is performed, the rotation mechanism 22 operates, and the main shaft 30 and the like are rotationally driven until the sheet gripping portion 23 reaches a position below the rotating body 20. The control panel 26 controls the rotational angle position of the main shaft 30 and the like so that the sheet gripping portion 23 reaches the position below the rotating body 20 based on the detection result by the encoder of the electric motor 33.

  When the sheet gripping portion 23 reaches a position below the rotating body 20, the drive mechanism 24 is operated based on a control command from the control panel 26, and the gripping operation of the sheet 100 by the sheet gripping portion 23 is released. When releasing the gripping operation of the sheet 100 by the sheet gripping portion 23, the driving mechanism 24 causes the rod 36 b of each cylinder unit 36 to protrude from the cylinder body 36 a and separate the sheet gripping portion 23 from the outer periphery 20 a of the rotating body 20. . FIG. 20 is a diagram for explaining the operation of the sheet winding apparatus 1 and shows a state in which the gripping operation of the sheet 100 by the sheet gripping unit 23 is released. As shown in FIG. 20, when the gripping operation of the sheet 100 by the sheet gripping unit 23 is released, the winding operation of the sheet 100 is finished.

  Note that the operation in which the rod 36b of each cylinder unit 36 protrudes from the cylinder body 36a when releasing the gripping operation of the seat 100 is performed, for example, by discharging compressed air from the cylinder body 36b. In this case, when the compressed air is discharged from the cylinder body 36a, the sheet gripping portion 23 fixed to the end of the rod 36b facing downward from the cylinder body 36a automatically descends due to gravity. The gripping operation is released.

  When the sheet gripping portion 23 returns to the position before the gripping operation of the sheet 100, the clutch 37 of the support mechanism 25 is operated based on the control command from the control panel 26, and the first clutch portion 39 and the first clutch portion 39 are The connection with the two-clutch unit 40 is disconnected, and the clutch 37 is switched to the disengaged state (see FIG. 16). The sheet winding apparatus 1 is provided with a magnetic proximity switch 43 for detecting whether or not the sheet gripping portion 23 is positioned at a position before the sheet 100 is gripped (FIG. 13). See). Based on the detection result by the magnetic proximity switch, the control panel 26 detects that the sheet gripping portion 23 has returned to the position before the sheet 100 is gripped, and switches the clutch 37 to the non-coupled state. Control.

  When the winding operation of the sheet 100 is completed and the clutch 37 is switched to the non-connected state, and the sheet winding process S203 is completed, the joining process S204 is then performed. The joining step S204 is performed by operating the sheet joining mechanism 13. FIG. 21 is a view for explaining the operation of the sheet joining mechanism 13 of the sleeve forming system 2.

  In the joining step S203, first, based on a control command from the control panel 26, the rotation mechanism 22 is operated to adjust the positions of the joining portions at both ends (100a, 100a) of the sheet 100. Specifically, the rotational angle position of the rotating body 20 is adjusted so that the joint portion between the both end portions (100a, 100a) of the sheet 100 is positioned on the upper portion of the rotating body 20.

  When the joint portions of both end portions (100a, 100a) of the sheet 100 are positioned above the rotating body 20, the front / rear drive mechanism 13c of the sheet joining mechanism 13 is operated based on a control command from the control panel 26. Then, the press press part 13 a and the vertical drive mechanism 13 b are driven so as to be positioned immediately above the joint part of both end parts (100 a, 100 a) of the sheet 100. Next, based on a control command from the control panel 26, the vertical drive mechanism 13b operates. As a result, as shown in FIG. 21, the pressing surface of the pressure-bonding press portion 13 a is pressed against the joint portion at both end portions (100 a, 100 a) of the sheet 100. At this time, the heater of the press bonding part 13a is in a state of generating heat. Thereby, the junction part of the both ends (100a, 100a) of the sheet | seat 100 is heated and welded. The crimping press part 13a is pressed against the joint part of the both ends (100a, 100a) of the sheet 100 for a predetermined time. When the predetermined time elapses, the joining by thermocompression bonding of the joining portions of both end portions (100a, 100a) of the sheet 100 is completed. Then, based on the control command from the control panel 26, the vertical drive mechanism 13b and the front / rear drive mechanism 13c are operated, and the crimping press part 13c returns to the position before the joining step S204 is started. Thereby, joining process S204 is complete | finished.

  When the joining step S204 is completed, the unvulcanized sleeve 101 is completed. When the unvulcanized sleeve 101 is completed, a nonwoven fabric winding step S205 for winding a nonwoven fabric (not shown) around the outer periphery of the unvulcanized sleeve 101 is performed. Since the nonwoven fabric is wound around the outer periphery of the unvulcanized sleeve 101, air can be removed from the voids of the nonwoven fabric in the vulcanization step S102, which is a subsequent step of the unvulcanized sleeve forming step S101. Thereby, it can suppress that an air pool is formed in the outer periphery of the unvulcanized sleeve 101 in vulcanization process S102.

  When the nonwoven fabric winding step S205 is finished, the unvulcanized sleeve forming step S101 is finished. In the present embodiment, the unvulcanized sleeve forming step S101 has been described as a step including the nonwoven fabric winding step S205. However, this need not be the case. The unvulcanized sleeve forming step S101 may be configured as a step not including the nonwoven fabric winding step S205.

  When the unvulcanized sleeve forming step S101 is completed, the rotating body 20 is removed from the sheet winding apparatus 1 by a mold conveying carriage (not shown). Then, the rotating body 20 in which the unvulcanized sleeve 101 is arranged on the outer periphery 20a is unloaded from the sheet winding device 1 and sent to the vulcanization step S102 which is the next step.

[Application example of sheet winding device and sleeve forming system]
The transmission belt 102 has various sizes, and the size (scale) of the sheet 100 (unvulcanized rubber sheet 100) that is the material of the transmission belt 102 is also in a wide range. Moreover, since the dimension of the sheet 100 covers a wide range, the dimension (scale) of the rotating body 20 (mold) around which the sheet 100 is wound also covers a wide range. On the other hand, the sheet winding apparatus 1 and the sleeve forming system 2 according to the above-described embodiment can be applied to various sheets 100 over a wide range of dimensions. Moreover, in the sheet winding apparatus 1 and the sleeve forming system 2, various rotating bodies 20 having a wide range of dimensions corresponding to the sheet 100 having a wide range of dimensions can be applied.

  In addition, this inventor verifies by applying various changes about the dimension of the rotary body 20 and the dimension of the sheet | seat 100 which can be applied in the sheet winding apparatus 1 and the sleeve forming system 2 of embodiment mentioned above. It was.

  In the verification of the applicable dimensions of the rotating body 20, the applicable peripheral length and total length of the rotating body 20 were verified. The circumferential length of the rotating body 20 is the circumferential dimension of the outer periphery of the rotating body 20, and the entire length of the rotating body 20 is in the rotational axis direction P of the rotating body 20 (see FIGS. 10 and 11). It is a length dimension. Further, in the verification of the applicable dimensions of the sheet 100, the sheet width, the sheet length, and the sheet thickness of the applicable sheet 100 were verified. The sheet width is a dimension in the width direction of the sheet 100, the sheet length is a dimension in the direction along the surface direction of the sheet 100 and perpendicular to the width direction in the sheet 100, and the sheet thickness is The dimension in the thickness direction of the sheet 100 and the dimension in the direction perpendicular to the longitudinal direction and the width direction in the sheet 100. The sheet length of the sheet 100 is substantially the same as the circumference of the rotating body 20.

  As described above, the inventors of the present application verified the dimensions of the rotating body 20 and the dimensions of the sheet 100 that can be applied in the sheet winding apparatus 1 and the sleeve forming system 2. As a result, the sheet winding device 1 and the sleeve molding are at least for the rotating body 20 having a dimension in which the peripheral length of the rotating body 20 is in the range of 450 mm to 1900 mm and the entire length of the rotating body 20 is in the range of 550 mm to 640 mm. It was verified that it can be applied in the system 2. Further, at least the sheet width of the sheet 100 is in the range of 530 mm to 635 mm, the sheet length of the sheet 100 is in the range of 450 mm to 1900 mm, and the sheet thickness of the sheet 100 is 1.5 mm to 3.5 mm. It was verified that the sheet winding apparatus 1 and the sleeve forming system 2 can be applied to the sheet 100 having the dimensions in the following range. In addition, the application dimensions of the above-described rotating body 20 and the sheet 100 verified for application to the sheet winding apparatus 1 and the sleeve forming system 2 are examples, and the rotating body 20 and the sheet 100 having a wider range of dimensions can be used. The present invention can be applied to the winding device 1 and the sleeve forming system 2.

[Function and effect]
According to the sheet winding apparatus 1, the sheet gripping portion 23 is rotated by the driving mechanism 24 in a state where the end portion 100 a of the sheet 100 is disposed in a region between the outer periphery 20 a of the rotating body 20 and the sheet gripping portion 23. It drives so that it may approach toward the outer periphery 20a. Accordingly, the end portion 100a of the sheet 100 is sandwiched and gripped between the outer periphery 20a of the rotating body 20 and the sheet gripping portion 23. Next, the main shaft 30 of the rotating mechanism 22 rotates in a state where the sheet gripping portion 23 and the driving mechanism 24 are rotatably supported together with the rotating body 20 with respect to the rotating mechanism 22. As a result, the sheet 100 having the end portion 100a gripped between the rotating body 20 and the sheet gripping portion 23 is wound around the outer periphery 20a of the rotating body 20 together with the rotation of the rotating body 20 that rotates together with the sheet gripping portion 23. . For this reason, according to the sheet winding apparatus 1, the sheet 100 can be easily wound around the outer periphery 20a of the rotating body 20 without requiring the skill of the operator.

  Further, according to the sheet winding apparatus 1, the sheet 100 can be easily held around the outer periphery 20 a of the rotating body 20 simply by gripping the end portion 100 a of the sheet 100 between the rotating body 20 and the sheet gripping portion 23 and rotating the rotating body 20. Therefore, the work time required for winding the sheet can be shortened, and the efficiency of the sheet winding work can be improved. Further, according to the sheet winding apparatus 1, the sheet gripping portion 23, the drive mechanism 24, the support mechanism 25, and the rotation mechanism 22 are operated, so that the sheet 100 can be easily attached to the outer periphery 20a of the rotating body 20 without requiring operator skill. Therefore, the sheet winding operation can be easily automated.

  Therefore, according to the sheet winding apparatus 1, the sheet 100 can be easily wound around the outer periphery 20a of the rotating body 20 without requiring the skill of an operator, the work time required for sheet winding can be shortened, and the efficiency of sheet winding work can be reduced. Improvements can be made.

  Further, according to the sheet winding device 1, the grip body 23 a of the sheet grip 23 is configured to extend along a direction parallel to the rotation axis direction P of the rotating body 20. For this reason, the sheet gripping portion 23 can easily and stably hold the end portion 100a of the sheet 100 along the rotation axis direction P of the rotating body 20 between the outer periphery 20a of the rotating body 20. .

  Further, according to the sheet winding apparatus 1, the drive mechanism 24 includes the cylinder unit 36 that holds the sheet gripping portion 23 with respect to the rotation mechanism 22. For this reason, the drive mechanism 24 that drives the sheet gripping portion 23 to approach and separate from the outer periphery 20a of the rotating body 20 can be realized with a simple structure, and the sheet winding device 1 can be arranged with space efficiency. Can do.

  Further, according to the sheet winding apparatus 1, the drive mechanism 24 is configured to hold the sheet gripping portion 23 with respect to the rotation mechanism 22 via a pair of cylinder units (36, 36). For this reason, the sheet gripping portion 23 can be driven so as to approach and separate from the outer periphery 20a of the rotating body 20 in a very stable state. In addition, the driving mechanism 24 that drives the sheet gripping portion 23 with respect to the outer periphery 20a of the rotating body 20 in a very stable state can be realized with a simple structure, and can be arranged in a space efficient manner in the sheet winding device 1. it can.

  Further, according to the sheet winding device 1, in the support mechanism 25, the connection state where the sheet gripping portion 23 and the driving mechanism 24 rotate together with the rotating body 20 and the power transmission path between the rotating mechanism 22 and the driving mechanism 24 are blocked. A clutch 37 is provided for switching the state between the sheet gripping portion 23 and the drive mechanism 24 and the rotation mechanism 22 between the non-connected state where the sheet gripping portion 23 and the drive mechanism 24 do not rotate together with the rotating body 20. . For this reason, it is possible to easily perform the operation of driving the main shaft 30 and the rotating body 20 of the rotating mechanism 22 without rotating the sheet gripping portion 23 and the driving mechanism 24 only by switching the clutch 37.

  Further, according to the sheet winding apparatus 1, the sheet grip that has passed through the concave portion 27 of the transport table 21a in a state where the end portion 100a of the sheet 100 is disposed in the region between the outer periphery 20a of the rotating body 20 and the sheet gripping portion 23. The convex part 23c of the part 23 presses the end part 100a of the sheet 100 against the outer periphery 20a of the rotating body 20, and the end part 100a of the sheet 100 is sandwiched and held between the outer peripheral part 20a of the rotating body 20 and the convex part 23c. . Therefore, the end portion 100a of the sheet 100 can be easily sandwiched and held between the outer periphery 20a of the rotating body 20 and the sheet gripping portion 23.

  Further, according to the sheet winding apparatus 1, the plurality of convex portions 23c arranged in a line in the sheet gripping portion 23 pass through the plurality of concave portions 27 aligned in the width direction at the end portion of the transport table 21a, respectively. The end portion 100a of the sheet 100 is pressed against the outer periphery 20a of the rotating body 20 by the projecting portion 23c, and the end portion 100a of the sheet 100 is sandwiched and held between the outer periphery 20a of the rotating body 20 and the plurality of projecting portions 23c. . Therefore, the end portion 100a of the sheet 100 can be easily sandwiched and held between the outer periphery 20a of the rotating body 20 and the sheet holding portion 23 in a more stable state.

[Modification]
Although the embodiments of the present invention have been described above, 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, the following modifications may be implemented.

(1) In the above-described embodiment, the sheet winding apparatus that winds the unvulcanized rubber sheet around the outer periphery of the rotating body has been described as an example. However, this need not be the case. A sheet winding apparatus that winds a sheet other than the unvulcanized rubber sheet around the outer periphery of the rotating body may be implemented. For example, a sheet winding apparatus for winding a vulcanized rubber sheet around the outer periphery of the rotating body may be implemented.

(2) In the above-described embodiment, the embodiment in which the rotating body around which the sheet is wound is a cylindrical mold has been described as an example. However, this need not be the case. A form in which a sheet is wound around a rotating body other than a cylindrical mold may be implemented. For example, the form by which a sheet | seat is wound around the rotary body comprised as a column-shaped metal mold | die may be implemented. Further, a form in which a sheet is wound around a rotating body configured by attaching a rubber sleeve to the outer periphery of a cylindrical or columnar mold may be implemented.

(3) In the above-described embodiment, the sheet gripping portion has been described as an example having a gripping main body portion extending along a direction parallel to the rotation axis direction of the rotating body. However, this need not be the case. The form of the sheet | seat holding part which does not have the holding | maintenance main-body part extended along the direction parallel to the rotating shaft direction of a rotary body may be implemented. For example, a sheet gripping portion having a plurality of abutting portions arranged in a distributed manner along a direction parallel to the rotation axis direction of the rotating body, and each of the abutting portions abutting against the end portion of the sheet May be implemented.

(4) In the above-described embodiment, the drive mechanism having the cylinder unit has been described as an example. However, this need not be the case. A drive mechanism having a mechanism other than the cylinder unit may be implemented. For example, a drive mechanism having a linear motor mechanism may be implemented. A drive mechanism having a ball screw mechanism may be implemented.

  The present invention can be widely applied to a sheet winding apparatus which is an apparatus for winding a sheet around the outer periphery of a rotating body.

DESCRIPTION OF SYMBOLS 1 Sheet winding apparatus 20 Rotating body 20a Outer periphery 22 Rotating mechanism 23 Sheet gripping part 24 Drive mechanism 25 Support mechanism 30 Spindle 100 Sheet

Claims (7)

A sheet winding device for winding a sheet around a rotating body,
A rotating mechanism having a main shaft configured to support the rotating body and to rotationally drive the rotating body;
A sheet gripping unit configured to grip the end of the sheet between the outer periphery of the rotating body by approaching the outer periphery of the rotating body supported by the main shaft;
A drive mechanism for driving the sheet gripping portion to approach and separate from the outer periphery of the rotating body;
A support mechanism that rotatably supports the sheet gripper and the drive mechanism together with the rotating body with respect to the rotating mechanism;
A sheet winding apparatus comprising: The sheet winding apparatus according to claim 1,
The sheet winding apparatus, wherein the sheet gripping portion includes a gripping main body portion extending along a direction parallel to a rotation axis direction of the rotating body. The sheet winding apparatus according to claim 1 or 2,
The drive mechanism has a cylinder unit that holds the sheet gripping portion and is supported with respect to the rotation mechanism,
The cylinder unit includes a cylinder body and a rod provided so as to be relatively displaced with respect to the cylinder body, and the rod is relatively displaced with respect to the cylinder body, whereby the sheet gripping portion is rotated. A sheet winding apparatus, wherein the sheet winding apparatus is driven so as to approach and separate from the outer periphery of the body. The sheet winding apparatus according to claim 3,
The drive mechanism has a pair of the cylinder units,
Each of a pair of said cylinder units hold | maintains the said sheet | seat holding part, The sheet winding apparatus characterized by the above-mentioned. The sheet winding apparatus according to any one of claims 1 to 4,
The support mechanism includes a connection state in which the drive mechanism holding the sheet gripping portion is connected to the rotation mechanism so as to rotate together with the rotating body, and a power transmission path between the rotation mechanism and the drive mechanism. A sheet wrapping device comprising: a clutch configured to be switchable between an unconnected state in which the connected state is released by shutting off the connection. The sheet winding apparatus according to any one of claims 1 to 5,
A transport table that transports a sheet toward an area between the outer periphery of the rotating body and the sheet gripping unit;
The end of the transfer table is provided with a recess that is recessed inward from the front end side of the transfer table and penetrates in the thickness direction of the transfer table.
The sheet gripping portion is provided with a convex portion arranged corresponding to the concave portion,
At least a part of the convex portion passes through the inside of the concave portion in a state where the end portion of the sheet conveyed by the conveying table is disposed in a region between the outer periphery of the rotating body and the sheet gripping portion. The end of the sheet pressed by the projection is pressed against the outer periphery of the rotating body, and the end of the sheet is sandwiched and gripped between the outer periphery of the rotating body and the convex. A sheet winding device. The sheet winding apparatus according to claim 6,
A plurality of the recesses are provided,
The plurality of recesses are arranged along the width direction of the transfer table at the end of the transfer table,
A plurality of the convex portions are provided,
The sheet winding apparatus, wherein the plurality of convex portions are arranged in a line corresponding to the plurality of concave portions in the sheet gripping portion.

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