JP6597399B2 - Cylindrical covering member manufacturing apparatus and cylindrical covering member manufacturing method - Google Patents

Description

  The present invention relates to a cylindrical body covering member manufacturing apparatus and a cylindrical body covering member manufacturing method.

  In Patent Document 1, a PFA tube is inserted into a decompression container, the upper end of the PFA tube is bent to the outer peripheral side, suspended from the opening of the decompression container, and a rubber roll is inserted into the PFA tube by suction force. Is disclosed.

JP 63-2222839 A

  When only a core body such as a rubber roll is inserted into a cylinder body such as a PFA tube and the core body is covered with the cylinder body, the core body inserted into the cylinder body and the cylinder body may be rubbed.

  An object of the present invention is to suppress rubbing between a core body and a cylinder body inserted into the cylinder body, as compared with a case where only the core body is inserted into the cylinder body.

  According to the first aspect of the present invention, an outer diameter is larger than an outer diameter of a container in which a cylindrical body is accommodated and an opening edge holds one end of the cylindrical body, and a core body inserted into the cylindrical body. A diameter-enlarging member attached to an end on the distal side in the insertion direction and a holding part for holding the other end of the cylindrical body from the inside in the container, the insertion direction of the diameter-enlarging member or the core body The holding portion having a fitting portion fitted along the axial direction of the cylindrical body in the holding state with respect to the fitted portion provided at the tip, and the cylinder by suction of the gas in the container While inserting the core body from the one end of the body into the cylindrical body, the portion of the cylindrical body expanded by the passage of the diameter expanding member is maintained in a diameter expanded state by a pressure difference inside and outside the cylinder, A suction portion that covers the core body with the cylindrical body by eliminating the pressure difference by stopping the suction in a state in which the fitting portion is fitted to the fitted portion.

  According to a second aspect of the present invention, the core body is formed in a tubular shape whose opening end on the distal end side in the insertion direction is the fitting portion, and the fitting portion is a cylinder fitted inside the opening end. Has a surface.

  The invention according to claim 3 is mounted on the outer periphery of the end portion on the rear end side in the insertion direction of the core body, and is fitted along the axial direction of the cylindrical body in the holding state with respect to the inner side of the opening edge. A rear end side fitting portion, and the suction portion eliminates the pressure difference by stopping the suction in a state in which the rear end side fitting portion is fitted inside the opening edge. The core is covered with

  According to a fourth aspect of the present invention, the suction portion eliminates the pressure difference and stops the core body with the cylindrical body by stopping the suction in a state where the diameter-expanding member is in the other end portion of the cylindrical body. Cover.

  In the invention of claim 5, the holding portion moves along the axial direction of the cylindrical body to apply an axial tension to the cylindrical body, and the suction portion includes the holding portion of the cylindrical body. The pressure difference is eliminated and the core body is covered with the cylindrical body by stopping the suction while the axial tension is applied to the other end portion.

  In the invention of claim 6, the core is coated with an adhesive on its outer peripheral surface, and the diameter-expanding member has an outer diameter larger than the outer diameter of the core including the adhesive.

  In the invention of claim 7, the core body is formed of a tubular body, and the tubular body is mounted on the outer periphery, and includes a columnar or cylindrical core member that is pulled out from the tubular body.

  In the invention according to claim 8, the diameter-enlarging member is gradually increased in diameter from the insertion direction to the cylinder body in the opposite direction.

  In the invention of claim 9, the diameter-expanding member is gradually reduced in diameter after gradually increasing in diameter from the insertion direction to the cylinder body in the opposite direction.

  In invention of Claim 10, the 1st process which prepares the manufacturing apparatus of the cylinder covering member of any one of Claims 1-9, and hold | maintains the said other end part of the said cylinder with the said holding part. The core body in which the diameter-expanding member is attached to the end on the distal end side in the insertion direction by the second step of holding the one end of the cylindrical body at the opening edge of the container and the suction of the gas in the container A third step of maintaining a diameter-enlarged state by a pressure difference inside and outside the cylinder, and a holding state A fourth step of fitting the fitting portion to the fitted portion along the axial direction of the cylindrical body, and stopping the suction in a state where the fitting portion is fitted to the fitted portion. And the fifth step of eliminating the pressure difference and covering the core body with the cylindrical body.

  In the invention of claim 11, the core body is formed in a tubular shape having an opening end on the distal end side in the insertion direction as the fitted portion, and in the fourth step, a cylinder fitted inside the opening end. The fitting portion having a surface is used.

  In a first step of the invention of claim 12, the cylindrical body covering member manufacturing apparatus according to claim 3 is prepared, and in the fourth step, the rear end is arranged along the axial direction of the cylindrical body in the holding state. The side fitting portion is fitted inside the opening edge, and in the fifth step, the pressure difference is caused by stopping the suction in a state where the rear end fitting portion is fitted inside the opening edge. And the core body is covered with the cylindrical body.

  In a fifth step according to the invention of claim 13, the pressure difference is eliminated while the diameter-expanding member is in the other end of the cylindrical body, and the core body is covered with the cylindrical body.

  In a fifth step according to the invention of claim 14, the pressure difference is eliminated in a state in which tension is applied to the cylindrical body in the axial direction by moving the holding portion along the axial direction of the cylindrical body. The core body is covered with the cylindrical body.

  In the invention of claim 15, an adhesive is applied to the outer peripheral surface of the core body, and the diameter-expanding member has an outer diameter larger than the outer diameter of the core body including the adhesive.

  In a sixteenth aspect of the present invention, the core body is constituted by a tubular body attached to the outer periphery of a columnar or cylindrical core material, and the sixth core body is pulled out from the tubular body covered with the cylindrical body. Process.

  In the invention of claim 17, the diameter-expanding member is gradually increased in diameter from the insertion direction to the cylinder body in the opposite direction.

  In the invention of claim 18, the diameter-expanding member is gradually reduced in diameter after gradually increasing in diameter from the insertion direction to the opposite direction to the cylindrical body.

  According to the structure of Claim 1 of this invention, compared with the case where only a core body is inserted in a cylinder, the friction with the core body inserted into a cylinder and a cylinder can be suppressed.

  According to the configuration of the second aspect of the present invention, compared to the configuration in which the fitting portion is fitted to the diameter-expanding member projecting outward in the axial direction from the end portion on the distal end side in the insertion direction of the core body, the discarding amount of the cylindrical body is reduced. Can be shortened.

  According to the structure of Claim 3 of this invention, generation | occurrence | production of the wrinkle of a cylinder can be suppressed compared with the structure which does not have a rear-end side fitting part.

  According to the configuration of the fourth aspect of the present invention, it is possible to suppress the occurrence of wrinkling of the cylindrical body as compared with the case where the core member is covered with the cylindrical body in the state where the diameter-expanding member protrudes from the other end portion of the cylindrical body.

  According to the structure of Claim 5 of this invention, when the other end part of a cylinder is an unloaded state, generation | occurrence | production of a wrinkle of a cylinder can be suppressed compared with the case where a core is covered with a cylinder.

  According to the structure of Claim 6 of this invention, it can suppress that the adhesive agent apply | coated to the core body is stripped compared with the case where only a core body is inserted in a cylinder.

  According to the configuration of the seventh aspect of the present invention, compared with the case where only the core is inserted into the cylinder, the cylinder is prevented from rubbing between the tubular body of the core inserted into the cylinder and the cylinder. Tubular bodies can be coated.

  According to the structure of Claim 8 of this invention, compared with the case where the outer diameter of a diameter expansion member is constant in an axial direction, a diameter expansion member can be inserted in a cylinder smoothly.

  According to the configuration of the ninth aspect of the present invention, the diameter-increasing member is larger when the diameter-increasing member is inserted into the cylinder than when the diameter is gradually increased from the insertion direction to the opposite direction to the cylinder. It can suppress that the edge of a diameter part is caught in a cylinder.

  According to the manufacturing method of Claim 10 of this invention, compared with the case where only a core body is inserted in a cylinder, the friction with the core body inserted into a cylinder and a cylinder can be suppressed.

  According to the manufacturing method of the eleventh aspect of the present invention, as compared with the case where the fitting portion is fitted to the diameter-expanding member that protrudes outward in the axial direction from the end portion on the distal end side in the insertion direction of the core body, the disposal allowance of the cylindrical body Can be shortened.

  According to the manufacturing method of Claim 12 of this invention, compared with the case where a rear-end side fitting part is not fitted inside the opening edge of a container, generation | occurrence | production of the wrinkle of a cylinder can be suppressed.

  According to the manufacturing method of the thirteenth aspect of the present invention, it is possible to suppress the occurrence of wrinkles of the cylindrical body as compared with the case where the core member is covered with the cylindrical body in the state in which the diameter-expanding member protrudes from the other end portion of the cylindrical body.

  According to the manufacturing method of the fourteenth aspect of the present invention, the generation of wrinkles in the cylinder can be suppressed as compared with the case where the core is covered with the cylinder when the other end of the cylinder is in an unloaded state.

  According to the manufacturing method of Claim 15 of this invention, it can suppress that the adhesive agent apply | coated to the core body is stripped compared with the case where only a core body is inserted in a cylinder.

  According to the manufacturing method of the sixteenth aspect of the present invention, it is possible to suppress the rubbing between the tubular body of the core body inserted into the tubular body and the tubular body as compared with the case where only the core body is inserted into the tubular body. The tubular body can be covered with.

  According to the manufacturing method of Claim 17 of this invention, compared with the case where the outer diameter of a diameter expansion member is constant in an axial direction, a diameter expansion member can be inserted in a cylinder smoothly.

  According to the manufacturing method of claim 18 of the present invention, compared with the case where the diameter is gradually increased from the insertion direction to the opposite direction to the cylindrical body, the diameter-expanding member is inserted when the diameter-expanding member is inserted into the cylindrical body. It can suppress that the edge of a large diameter part is caught in a cylinder.

It is a perspective view which shows the structure of the manufacturing apparatus which concerns on this embodiment. It is sectional drawing which shows the structure of the tube coating roll which concerns on this embodiment. It is a front sectional view showing the configuration of the manufacturing apparatus according to the present embodiment. It is a front view which shows the roll body, diameter expansion member, and fitting member which concern on this embodiment. It is a perspective view which shows the conveying apparatus which concerns on this embodiment. It is sectional drawing (6-6 line sectional drawing of FIG. 8) of the lower end part of the insertion body which concerns on this embodiment. It is sectional drawing (the 7-7 line sectional drawing of FIG. 8) of the upper part part of the insertion body which concerns on this embodiment. It is a perspective view which shows the state which hold | maintained the tube in the insert which concerns on this embodiment. It is a perspective view which shows the structure of the lower holding mechanism which concerns on this embodiment. FIG. 10 is a perspective view showing a state where the inflating portion is inflated in the configuration shown in FIG. 9. It is a front sectional view showing the configuration of the lower holding mechanism according to the present embodiment. It is a front view which shows the structure of the upper holding mechanism which concerns on this embodiment. It is a top view which shows the structure of the upper holding mechanism which concerns on this embodiment. It is a perspective view which shows the structure of the nail | claw part of the upper holding mechanism which concerns on this embodiment. In the manufacturing apparatus shown in FIG. 3, it is a front sectional view which shows the state which conveyed the tube to the inside of a container. In the manufacturing apparatus shown in FIG. 15, it is a front sectional view which shows the state holding the lower end part of the tube. It is a top view which shows the state which adsorb | sucked the outer periphery of the upper end part of the tube with the suction pad of this embodiment. In the manufacturing apparatus shown in FIG. 16, after extracting an insertion body from a tube, it is a front view which shows the state which inserted the front-end | tip part of the nail | claw part in the tube. In the manufacturing apparatus shown in FIG. 18, it is a front view which shows the state which expanded the diameter of the tube. In the manufacturing apparatus shown in FIG. 19, it is a front view which shows the state which turned up the tube. In the manufacturing apparatus shown in FIG. 20, it is a front view which shows the state which hold | maintained the tube to the container. In the manufacturing apparatus shown in FIG. 21, it is a front sectional view which shows the state which started insertion of the roll body with respect to a tube. FIG. 23 is a front sectional view showing a state in which the roll body is completely inserted into the tube in the manufacturing apparatus shown in FIG. 22. In the manufacturing apparatus shown in FIG. 23, it is a front sectional view which shows the state which coat | covered the roll body with the tube. It is the schematic which shows the process in which a tube is diameter-expanded, and the process in which the diameter-expanded tube is diameter-reduced. It is a front sectional view showing a modification in which the guide cone is fitted to the diameter-expanding member.

  Below, an example of an embodiment concerning the present invention is described based on a drawing.

(Manufacturing apparatus 10)
First, the manufacturing apparatus 10 will be described. FIG. 1 shows the configuration of the manufacturing apparatus according to the present embodiment.

  The manufacturing apparatus 10 is an apparatus which manufactures the tube coating roll 100 (an example of a cylindrical body covering member) shown in FIG. Specifically, as shown in FIG. 1, the manufacturing apparatus 10 includes a container 20, a diameter expanding member 50, a fitting member 80 (an example of a rear end fitting portion), and a suction mechanism 70 (suction portion). ), A transfer device 300 (see FIG. 5), a lower holding mechanism 200 (an example of a holding unit, see FIG. 9), and an upper holding mechanism 400 (see FIG. 12). Hereinafter, a specific configuration of the tube covering roll 100 and a specific configuration of each part of the manufacturing apparatus 10 will be described.

(Tube coating roll 100)
As shown in FIG. 2, a tube covering roll 100 that is a manufacturing target of the manufacturing apparatus 10 includes a roll body 110 (an example of a core body) and a tube 120 (an example of a cylindrical body) that covers the roll body 110. Have. That is, the tube covering roll 100 is a roll configured by covering the roll body 110 with the tube 120. The tube 120 is formed in a cylindrical shape (tubular), and is bonded to the roll body 110 with an adhesive 130.

  The roll body 110 includes a cylindrical or columnar shaft portion 112 and a cylindrical (tubular) elastic body 114 formed on the outer periphery of the shaft portion 112. Both end portions of the shaft portion 112 are supported portions 116 supported by the bearings.

  For example, a metal material is used for the shaft portion 112. For example, a rubber material such as silicon rubber is used for the elastic body 114. The tube 120 has elasticity (flexibility), and as an example, a fluororesin such as PFA or PTFE is used for the tube 120.

(Container 20)
The container 20 accommodates the tube 120 (refer FIG. 22). Specifically, as shown in FIGS. 1 and 3, the container 20 includes a trunk portion 24, a bottom portion 22 disposed below the trunk portion 24, and a top portion 30 disposed above the trunk portion 24. And have.

  The trunk | drum 24 is formed in the cylindrical shape by which the axial direction both ends (upper and lower end part) were open | released. The body portion 24 forms a side wall of the container 20 with a side wall portion 32 described later in the top portion 30. Furthermore, a suction port 24 </ b> E to which a suction pipe 76 described later in the suction mechanism 70 is connected is formed in the body portion 24.

  The bottom 22 is formed in a disc shape. The bottom portion 22 is fixed to the lower end portion of the trunk portion 24. As a result, the bottom 22 closes the lower open portion of the body 24 and constitutes the bottom wall of the container 20.

  The top portion 30 has a cylindrical side wall portion 32, an annular (ring-shaped) annular wall portion 34, and a cylindrical peripheral wall portion 38.

  Specifically, the annular wall portion 34 has a plate shape having a thickness in the vertical direction, and is a wall portion formed in an annular shape in plan view. The annular wall portion 34 constitutes the upper wall of the container 20.

  The side wall portion 32 is formed so as to extend downward from the outer peripheral edge of the annular wall portion 34. The lower end portion of the side wall portion 32 is attached to the upper end portion of the trunk portion 24.

  The peripheral wall portion 38 is formed so as to rise upward from the inner peripheral edge of the annular wall portion 34. The inner peripheral space on the inner peripheral side of the peripheral wall portion 38 and the annular wall portion 34 constitutes the opening 20 </ b> A of the container 20. And the surrounding wall part 38 has the opening edge 20B in which the upper end part (an example of one end part) of the tube 120 is hold | maintained.

  Furthermore, a closed space that is opened only by the opening 20 </ b> A and the suction port 24 </ b> E is formed in the container 20 by the trunk portion 24, the bottom portion 22, and the top portion 30.

(Expanded member 50)
As shown in FIGS. 1 and 4, the diameter expanding member 50 is mounted coaxially with the roll body 110 on the outer periphery of the lower end portion (an example of the end portion on the distal end side in the insertion direction) of the roll body 110. Specifically, the diameter expanding member 50 is attached to the lower supported portion 116 (shaft portion 112) of the roll body 110.

  The diameter-expanding member 50 gradually increases in diameter from the insertion direction (downward) to the tube 120 in the opposite direction (upward) and then gradually decreases in diameter. That is, the diameter-expanding member 50 has a maximum diameter at the central portion in the vertical direction, and is formed in a tapered shape that tapers as it goes upward and downward from the central portion in the vertical direction.

  Further, the diameter expanding member 50 has an outer diameter larger than the outer diameter of the roll body 110. Specifically, the diameter-expanding member 50 has an outer diameter larger than the outer diameter of the roll body 110 including the adhesive 130 applied to the roll body 110 before the tube 120 is covered. In the present embodiment, the outer diameters at the upper and lower ends of the diameter expanding member 50 are the same as the outer diameter of the roll body 110. Note that the outer diameter of the entire diameter-expanding member 50 including the outer diameters at the upper and lower ends may be larger than the outer diameter of the roll body 110. Further, the outer diameter at the upper and lower ends of the diameter expanding member 50 may be smaller than the outer diameter of the roll body 110. As described above, the diameter-expanding member 50 may include an outer diameter that is equal to or smaller than the outer diameter of the roll body 110, and at least partly has an outer diameter larger than the outer diameter of the roll body 110. Good.

  And in this embodiment, the diameter expansion member 50 is inserted in the tube 120, and the diameter of the tube 120 is expanded in an elastic region. For example, a resin material such as a fluororesin is used for the diameter expanding member 50.

(Fitting member 80)
As shown in FIGS. 1 and 4, the fitting member 80 is mounted coaxially with the roll body 110 on the outer periphery of the upper end portion (an example of the end portion on the rear end side in the insertion direction) of the roll body 110. Specifically, the fitting member 80 is attached to the supported portion 116 (the shaft portion 112) on the upper side of the roll body 110.

  The diameter of the fitting member 80 is gradually increased from the insertion direction (downward) to the tube 120 in the opposite direction (upward). That is, the fitting member 80 has a maximum diameter at the upper end portion, and is formed in a tapered shape (cylindrical cylindrical shape) that tapers downward.

  The outer diameter of the lower end portion of the fitting member 80 is equal to or greater than the outer diameter of the roll body 110. The outer diameter of the intermediate portion in the axial direction of the fitting member 80 is larger than the inner diameter of the peripheral wall portion 38. The fitting member 80 is fitted coaxially with the peripheral wall portion 38 along the axial direction of the tube 120 in the holding state with respect to the inside of the opening edge 20B of the peripheral wall portion 38 in the state where the tube 120 is held (see FIG. 23). For example, the fitting member 80 is made of a resin material such as a polyamide synthetic resin.

(Suction mechanism 70)
As illustrated in FIG. 1, the suction mechanism 70 includes a suction pump 72, a regulator 74, and a suction pipe 76. The suction pipe 76 has one end connected to the suction pump 72 and the other end connected to the suction port 24E. The regulator 74 is disposed in the middle part of the suction pipe 76.

  In the suction mechanism 70, when the suction pump 72 is driven, the gas (air) inside the container 20 is sucked through the suction pipe 76, and the inside of the container 20 is decompressed. The regulator 74 has a pressure adjusting function for adjusting the pressure inside the container 20.

(Conveyor 300)
The conveyance device 300 is a device that conveys the tube 120 to the inside of the container 20. Specifically, as shown in FIG. 5, the conveyance device 300 includes an insertion body 390 inserted along the axial direction inside the tube 120, a suction part 382, and a moving mechanism 349. ing.

  The insert 390 has a length along the vertical direction (insertion direction with respect to the tube 120). As shown in FIG. 6, the lower end 391 of the insert 390 is formed in a circular shape in a cross section viewed in the insertion direction with respect to the tube 120 (the axial direction of the tube 120). Further, as shown in FIG. 5, the lower end portion 391 includes a constant portion 391A having a constant outer diameter along the longitudinal direction of the insert 390, and a tapered portion 391B that gradually taper. The fixed portion 391A is formed in a cylindrical shape. The fixed portion 391A may be cylindrical. The outer periphery (outer peripheral length) of the fixed portion 391A is shorter than the inner periphery (inner peripheral length) of the tube 120.

  As shown in FIG. 7, the upper portion 393 excluding the lower end 391 in the insert 390 has a recess 392 formed on the outer periphery in a cross section viewed in the insertion direction with respect to the tube 120 (the axial direction of the tube 120). Have. Four recesses 392 are arranged at regular intervals along the circumferential direction of the insert 390 (every 90 degrees) in the above-described cross section. As a result, the upper portion 393 is formed in a substantially cross shape in the above-described cross section. Further, the circumferential length including the concave portion 392 (concave surface) in the insert 390 is made longer than the inner circumference of the tube 120. Note that the circumferential length of the insertion body 390 not including the concave portion 392 (concave surface) (the circumferential length of the shortest distance formed by the outer edge of the insertion body 390, that is, the circumferential length indicated by the alternate long and short dash line 392S) Has also been shortened. In the cross section described above, the longest distance 393L from the center 393C of the upper portion 393 to the outer edge of the insert 390 and the radius of the fixed portion 391A of the lower end 391 are the same, for example. The radius and the longest distance 393L may be different lengths.

  The upper portion 393 is formed with a hole 394 that opens at the recess 392. The hole 394 communicates with a passage 396 formed in the upper portion 393 along the longitudinal direction of the insert 390. The passage 396 communicates with the suction portion 382 at the upper end portion. With the insert 390 inserted inside the tube 120, the suction part 382 is operated to suck the tube 120 through the hole 394. Thereby, as shown in FIG. 8, the tube 120 is adsorbed on the outer periphery of the insert 390, and the tube 120 is held on the outer periphery of the insert 390.

  The moving mechanism 349 (see FIG. 5) is configured by, for example, a three-axis robot that moves the insert 390 in the vertical direction and the horizontal direction (left-right direction).

(Lower holding mechanism 200)
The lower holding mechanism 200 is a mechanism that holds the lower end portion of the tube 120. Specifically, as shown in FIGS. 9, 10, and 11, the lower holding mechanism 200 is provided in the main body portion 212, the movable portion 214 that is movable with respect to the main body portion 212, and the movable portion 214. It has an expansion part 216 such as an air picker and a guide cone 220 (an example of a fitting part).

  The main body portion 212 is fixed to the central portion in a state of vertically penetrating the central portion in plan view of the disc-shaped bottom portion 22. The main body 212 is formed in a cylindrical shape that protrudes above the bottom 22.

  The movable part 214 is formed in a columnar shape and is supported inside the main body part 212 so as to be movable in the vertical direction. In addition, the movable portion 214 can be fixed to the main body portion 212 by a fixing mechanism (not shown). In other words, the movable portion 214 is switched between a free state in which the movable portion 214 can move in the vertical direction with respect to the main body portion 212 and a fixed state in which the movable portion 214 is fixed to the main body portion 212. Further, the movable portion 214 is moved downward by a drive mechanism (see the drawing) in a free state.

  The movable portion 214 is formed with a passage 214A having one end opened at the upper end portion of the movable portion 214 and the other end opened at a side portion of the movable portion 214 and having an L shape in a side sectional view. Yes. The passage 214A communicates with a passage 212A that penetrates the main body portion 212 in the radial direction. The passages 214 </ b> A and 212 </ b> A allow the inner space of the container 20 and the inner space of the tube 120 to pass through even when the expanding portion 216 holds the inner peripheral surface of the lower end portion of the tube 120 from the inside. Even when the movable portion 214 moves, the passage 214A of the movable portion 214 and the passage 212A of the main body portion 212 are maintained in communication.

  The inflatable portion 216 is formed in an annular shape (doughnut shape) having a circular hole 216A in the center portion in plan view. The expansion part 216 is configured by an elastic film such as rubber that covers the upper part of the movable part 214 in the circumferential direction. An inner peripheral end portion of the inflatable portion 216 is fixed to the upper end portion of the movable portion 214, and an outer peripheral end portion of the inflatable portion 216 is fixed to the upper peripheral wall of the movable portion 214. Thereby, it is comprised by the bag shape which has internal space.

  The internal space of the expansion part 216 communicates with passages 214B and 212B formed in the movable part 214 and the main body part 212, respectively. The passages 214B and 212B are passages separated from the passages 214A and 212A. A supply unit 213 for supplying air is connected to the passage 212B. When the supply unit 213 supplies air to the inside of the expansion unit 216 through the passages 214B and 212B, the expansion unit 216 expands as shown in FIGS. Hold the peripheral surface from the inside.

  As shown in FIG. 11, the guide cone 220 has an opening end 112 </ b> A (an example of a fitted portion) on the lower end side (tip end side in the insertion direction) of the shaft portion 112 (supported portion 116) in the roll body 110. This is a member that is fitted along the axial direction of the tube 120 in a holding state in which the lower end portion is held by the inflating portion 216. The guide cone 220 has a fitting portion 222 fitted to the opening end 112A of the shaft portion 112, and a fixed shaft portion 224 that protrudes downward from the fitting portion 222 and is fixed to the upper end portion of the movable portion 214. is doing.

  The fitting portion 222 has a cylindrical surface 222A fitted inside the opening end 112A and a conical surface 222B whose outer diameter gradually decreases from the upper end of the cylindrical surface 222A. The outer diameter of the cylindrical surface 222 </ b> A is the same as or slightly smaller than the inner diameter of the shaft portion 112 of the roll body 110. The guide cone 220 is fixed to the movable portion 214 coaxially with the expanding portion 216 by a fixed shaft portion 224. Thereby, 222 A of cylindrical surfaces and the outer peripheral surface of the expansion part 216 are arrange | positioned coaxially.

  In the lower holding mechanism 200, the movable portion 214 is movable with respect to the main body portion 212. However, the movable portion 214 is fixed to the main body portion 212, and the main body portion 212 is in a free state and a fixed state with respect to the container 20. You may come to switch to. A specific holding operation by the lower holding mechanism 200 will be described in a manufacturing method described later.

(Upper holding mechanism 400)
The upper holding mechanism 400 is a mechanism that holds the upper end portion (an example of one end portion) of the tube 120 with the container 20. Specifically, as shown in FIGS. 12 and 13, the upper holding mechanism 400 includes a plurality (specifically four) of suction pads 410 (an example of a suction mechanism) and a plurality (specifically four). ) Claw portion 420.

  The four suction pads 410 are arranged at 90 ° intervals at equal intervals, as shown in FIG. 13, along the circumferential direction of the peripheral wall 38 (tube 120) above the top 30 (see FIG. 12). Yes. The suction port 412 of the suction pad 410 is directed radially inward of the peripheral wall portion 38. The suction pad 410 sucks the outer periphery of the upper end portion (one end portion) protruding from the opening of the peripheral wall portion 38 in the tube 120 accommodated in the container 20 by sucking through the suction port 412.

  In addition, as shown in FIG. 12, the suction pad 410 can be moved radially inward and radially outward of the peripheral wall 38 by the moving mechanism 415 as indicated by the arrow Y. For example, a cylinder is used as the moving mechanism 415.

  The four claw portions 420 are disposed between the four suction pads 410 in plan view as shown in FIG. 13 above the top portion 30 (see FIG. 12). Specifically, the four claw portions 420 are arranged at every 90 degrees at equal intervals along the circumferential direction of the peripheral wall portion 38.

  As shown in FIGS. 12 and 14, the four claw portions 420 are formed in an L shape in a side view. Each claw 420 has a claw body 422 that extends radially inward of the peripheral wall 38 and a tip 424 that projects downward from the radially inner end of the claw body 422.

  As shown in FIG. 14, a plurality of groove portions 427 along the circumferential direction of the peripheral wall portion 38 (tube 120) are formed on the contact surface 423 on the radially outer side (the claw portion main body 422 side) of the distal end portion 424. . Specifically, for example, three grooves 427 are arranged vertically.

  Further, as shown in FIG. 12, the claw portion 420 can be moved radially inward and radially outward of the peripheral wall portion 38 by the moving mechanism 425 and vertically. It is movable. As the moving mechanism 425, for example, a biaxial robot is used. The four claw portions 420 hold the upper end portion of the tube 120 with the peripheral wall portion 38 of the container 20. A specific holding operation by the upper holding mechanism 400 will be described in a manufacturing method described later.

(Other configuration of the manufacturing apparatus 10)
As illustrated in FIG. 23, the manufacturing apparatus 10 includes an insertion mechanism 90 that inserts the roll body 110 into the tube 120 held in the container 20. For example, the insertion mechanism 90 holds the supported portion 116 on the upper side of the roll body 110 and lowers the roll body 110 to insert the roll body 110 into the tube 120.

(Manufacturing method of the tube coating roll 100 using the manufacturing apparatus 10)
Next, the manufacturing method of the tube coating roll 100 using the manufacturing apparatus 10 is demonstrated.

  The manufacturing method includes a preparation process (an example of the first process), a transport process, a holding process (an example of the second process), an insertion process (an example of the third process), and a fitting process (an example of the fourth process). An example) and a covering step (an example of a fifth step). A conveyance process, a holding process, an insertion process, a fitting process, and a covering process are performed in this order. Hereinafter, each step will be described.

(Preparation process)
In the preparation step, the above-described manufacturing apparatus 10 for manufacturing the tube coating roll 100 is prepared.

(Conveying process)
The transporting process is a process of transporting the tube 120 to the inside of the container 20. Specifically, the transport process is performed as follows. That is, in the transport process, as shown in FIG. 5, first, the suction unit 382 of the transport device 300 is operated in a state where the insert 390 of the transport device 300 is inserted inside the tube 120. Thereby, the tube 120 is adsorbed on the outer periphery of the insert 390, and the tube 120 is held on the outer periphery of the insert 390 (see FIG. 8).

  Next, the moving mechanism 349 lowers the insert 390 from the opening 20 </ b> A of the container 20 to the inside of the container 20, so that the tube 120 is conveyed into the container 20 as shown in FIG. 15. Specifically, the tube 120 is conveyed to the inside of the container 20 in a state where the lower end portion protrudes to the lower side of the insertion body 390, and the tube 120 expands the lower holding mechanism 200 on the inner peripheral side of the lower end portion. Part 216 is inserted.

(Holding process)
The holding step is a step of holding the tube 120. Specifically, the holding step includes a lower end holding step and an upper end holding step. Hereinafter, the lower end holding step and the upper end holding step will be described.

(Lower end holding process)
The lower end holding step is a step of holding the lower end of the tube 120. Specifically, as shown in FIG. 16, in the lower end holding step, the supply unit 213 supplies air to the inside of the expansion unit 216 through the passages 212B and 214B. Thereby, the expansion part 216 expand | swells and hold | maintains the internal peripheral surface of the lower end part of the tube 120 from an inner side. At this time, the movable part 214 to which the inflating part 216 is attached is in a fixed state fixed to the main body part 212.

(Upper end holding process)
The upper end holding step is a step of holding the upper end of the tube 120 in the container 20. Specifically, the upper end holding step is performed as follows. That is, in the upper end holding step, as shown in FIG. 16 and FIG. 17, the four suction pads 410 are sucked through the suction port 412, so that the upper end (one end) of the tube 120 protrudes from the opening of the peripheral wall 38. Part). Note that when suction of the suction pad 410 is started, suction by the suction part 382 in the insertion body 390 is stopped. Further, in the insert 390, suction may be stopped and air may be ejected through the hole 394. As a result, the tube 120 is easily separated from the insert 390.

  Next, as shown in FIG. 18, the insert 390 rises and the insert 390 is extracted from the tube 120. Next, as shown in FIGS. 18 and 13, the four claw portions 420 are lowered from a position above the tube 120 in a state where the outer periphery of the upper end portion is sucked by the four suction pads 410 by the moving mechanism 425. By doing so, the distal end portion 424 is inserted inside the upper end portion of the tube 120.

  Further, as shown in FIG. 19, the four claw portions 420 are moved outward in the radial direction of the peripheral wall portion 38 by the moving mechanism 425 in a state where the contact surface 423 is in contact with the inner periphery of the tube 120. Thereby, the upper end part of the tube 120 is expanded. Note that when the four claw portions 420 move outward in the radial direction of the peripheral wall portion 38, the suction pad 410 is moved outward in the radial direction of the peripheral wall portion 38 by the moving mechanism 415. For this reason, the suction pad 410 does not interfere with the tube 120. The suction pad 410 is moved before or simultaneously with the movement of the claw portion 420, for example.

  Thereafter, as shown in FIG. 20, the four claw portions 420 are moved downward by the moving mechanism 425 on the outer peripheral side of the peripheral wall portion 38 to fold back the upper end portion of the tube 120, and are then shown in FIG. 21. So that it moves radially inward of the peripheral wall 38. Accordingly, the upper end portion of the tube 120 is pressed against the outer wall of the peripheral wall portion 38 by the four claw portions 420, and the upper end portion of the tube 120 is held. Thus, the tube 120 is held by the opening edge 20 </ b> B of the peripheral wall portion 38 by sandwiching the upper end portion of the tube 120 by the four claw portions 420 and the peripheral wall portion 38 of the container 20.

(Insertion process)
The insertion step is a step of inserting the roll body 110 into the tube 120 in which the upper end portion and the lower end portion are held. Specifically, the insertion process is performed as follows. That is, in the insertion step, first, the suction pump 72 of the suction mechanism 70 is driven to start the suction of the air inside the container 20.

  Here, the movable part 214 to which the inflating part 216 is attached is in a free state in which it can move in the vertical direction with respect to the main body part 212. In this state, as shown in FIG. 22, the roll body 110 with the diameter-expanding member 50 attached to the lower end is inserted into the tube 120 by the insertion mechanism 90 (see FIG. 23).

  When the roll body 110 is inserted into the upper end portion of the tube 120 and the upper opening of the tube 120 is sealed, the inside of the container 20 is depressurized, and downward (insertion direction) with respect to the roll body 110 due to a pressure difference between the inside and outside of the container 20. The force to pull in acts. In the present embodiment, the roll body 110 is lowered by the pushing force by the insertion mechanism 90, the pulling force by the pressure difference between the inside and outside of the container 20, and gravity, and the roll body 110 is inserted from the upper end portion of the tube 120 to the lower end portion. Is done.

  When the diameter-expanding member 50 passes through each part of the tube 120, the tube 120 is expanded in diameter and contracts in the axial direction (see FIG. 25A). However, since the expansion part 216 is in a free state, Ascending while maintaining the state of holding the lower end.

  When the roll body 110 descends, the tube 120 is expanded in diameter in a region where the diameter-expanding member 50 has passed. The expanded diameter portion is maintained in the expanded diameter state by the pressure difference between the inside and outside of the tube 120 (see FIG. 23).

  In this way, while the roll body 110 is inserted from the upper end portion of the tube 120 to the lower end side, the diameter-expanded state of the portion of the tube 120 expanded by the passage of the diameter-expanding member 50 is changed by the pressure difference inside and outside the tube 120. maintain.

  Note that an adhesive 130 (see FIG. 2) is applied to the outer peripheral surface of the elastic body 114 of the roll body 110 before being inserted into the tube 120.

(Mating process)
The fitting step is a step of fitting the guide cone 220 to the lower end portion of the roll body 110 and fitting the fitting member 80 to the opening edge 20 </ b> B of the container 20. Specifically, in the fitting step, as shown in FIG. 23, the roll body 110 is moved to the fitting position where the guide cone 220 is fitted to the lower end portion of the roll body 110 inserted into the tube 120. Lower. Thereby, the cylindrical surface 222 </ b> A of the guide cone 220 is fitted to the opening end 112 </ b> A on the lower end side of the shaft portion 112 in the roll body 110.

  Further, in this fitting position, the fitting member 80 and the peripheral wall portion 38 along the axial direction of the tube 120 in the holding state with respect to the inner side of the opening edge 20B of the peripheral wall portion 38 in the state in which the tube 120 is held. Mates coaxially.

  Further, the lowering of the roll body 110 is stopped at this fitting position. In this fitting position, the lower end portion of the roll body 110 and the diameter-expanding member 50 have a gap with respect to the diameter-expanding member 50 and are not in contact with the diameter-expanding member 50.

(Coating process)
The covering step is a step of covering the roll body 110 with the tube 120 in a state where the guide cone 220 is fitted to the lower end portion of the roll body 110 and the fitting member 80 is fitted to the opening edge 20B of the container 20. Specifically, in the covering step, the driving of the suction pump 72 is stopped in a state where the guide cone 220 is fitted to the lower end portion of the roll body 110 and the fitting member 80 is fitted to the opening edge 20B of the container 20. The inside of the container 20 is opened to the atmosphere. Thereby, in a state where the diameter-expanding member 50 is in the lower end portion of the tube 120, the pressure difference between the inside and the outside of the tube 120 is eliminated, and the tube 120 is reduced in diameter. Thus, the roll body 110 is covered with the tube 120 as shown in FIG.

  Further, at this time, the movable portion 214 is moved downward by a driving mechanism (see the drawing). Thereby, tension in the axial direction (downward) is applied to the lower end portion of the tube 120. That is, the roll body 110 is covered with the tube 120 in a state where axial tension (downward) is applied to the lower end portion of the tube 120.

  Next, the expansion part 216 is deflated, and the holding of the lower end part of the tube 120 is released. Further, the four claw portions 420 are moved by the moving mechanism 425 in the opposite direction to the moving operation in the upper end holding step. Thereby, holding | maintenance of the upper end part of the tube 120 is cancelled | released.

  Next, the roll body 110 is taken out from the inside of the container 20, and the remaining lower end portion and upper end portion of the tube 120 are cut, and the diameter expanding member 50 and the fitting member 80 are removed from the roll body 110. Thereby, the tube coating roll 100 is manufactured.

(Operation of this embodiment)
In the present embodiment, as described above, the diameter of the tube 120 is increased by the passage of the diameter expanding member 50. Further, the expanded diameter portion is maintained in the expanded diameter state by the pressure difference between the inside and outside of the tube 120. For this reason, the roll body 110 is inserted in a state where a gap is formed between the outer peripheral surface of the roll body 110 inserted into the tube 120 and the inner peripheral surface of the tube 120. Thereby, compared with the case where only the roll body 110 whose outer diameter is constant in the axial direction is inserted into the tube 120 (comparative example), rubbing between the roll body 110 and the tube 120 can be suppressed.

  Since the rubbing between the roll body 110 and the tube 120 is suppressed, the adhesive applied to the roll body 110 is suppressed from being peeled off. Furthermore, since the rubbing between the roll body 110 and the tube 120 is suppressed, the roll body 110 is smoothly inserted into the tube 120 as compared with the case where only the roll body 110 is inserted into the tube 120 (comparative example).

  Here, as described above, the diameter of the tube 120 is increased and decreased in the manufacturing process. As shown in FIG. 25, the tube 120 is expanded and contracted to change the axial length. Specifically, as shown in FIG. 25A, when the diameter of the tube 120 is increased, the tube 120 contracts in the axial direction by the Poisson's ratio. In FIG. 25A, the tube 120 before diameter expansion is indicated by a two-dot chain line, and the tube 120 after diameter expansion is indicated by a solid line.

  Furthermore, as shown in FIG. 25B, when the expanded tube 120 is reduced in diameter and returned to the original outer diameter, it extends in the axial direction. If the amount of expansion at this time is smaller than the amount of contraction at the time of diameter expansion, the tube 120 sag in the axial direction, causing a bellows-like wrinkle. In FIG. 25B, the tube 120 before diameter reduction is indicated by a two-dot chain line, the tube 120 after diameter reduction is indicated by a solid line, and the tube 120 before diameter expansion is indicated by a one-dot chain line.

  And in this embodiment, the diameter difference member 50 exists in the lower end part of the tube 120, the pressure difference inside and outside the tube 120 is eliminated, and the tube 120 is reduced in diameter, so that the roll body 110 is formed by the tube 120. Is coated.

  For this reason, compared with the case where the roll body 110 is coat | covered with the tube 120 in the state which the diameter-expansion member 50 protruded below from the lower end part of the tube 120 (1st comparative example), the diameter-expansion member 50 and the tube 120 A frictional resistance is generated between them, and a tension acts in the axial direction of the tube 120 due to the frictional resistance. Thus, wrinkles of the tube 120 are generated as compared with the first comparative example by covering the roll body 110 with the tube 120 in a state where the axial direction (downward) tension is applied to the lower end portion of the tube 120. Is suppressed.

  Further, according to the present manufacturing method, the roll body 110 with the diameter-expanding member 50 attached to the lower end portion in the free state in which the movable part 214 attached with the inflating part 216 is movable in the vertical direction in the inserting step. It is inserted into the tube 120. Here, insertion of the diameter-expanding member 50 causes the tube 120 to expand in diameter so that the tube 120 contracts in the axial direction (see FIG. 25A). Ascends. Therefore, it is suppressed that the expansion part 216 remove | deviates from the tube 120 compared with the case where the expansion part 216 is being fixed (comparative example).

  Moreover, in this manufacturing method, the roll body 110 is covered with the tube 120 in a state where a tension in the axial direction (downward) is applied to the lower end portion of the tube 120. Thereby, when the lower end part of the tube 120 is an unloaded state, generation | occurrence | production of the wrinkle of the tube 120 is suppressed compared with the case where the roll body 110 is coat | covered with the tube 120 (comparative example).

  Furthermore, in this embodiment, the diameter-expanding member 50 is formed in a tapered shape that tapers as it goes downward in the lower portion of the central portion in the vertical direction. For this reason, since the diameter-expanding member 50 gradually expands the diameter of the tube 120, the reaction force (resistance force) received by the diameter-expanding member 50 from the tube 120 does not increase suddenly in the initial stage of insertion. Thereby, the roll body 110 is smoothly inserted into the tube 120 as compared with the case where the outer diameter of the diameter expanding member 50 is constant in the axial direction (comparative example).

  Moreover, in this embodiment, the diameter-expansion member 50 is formed in the taper shape which tapers as it goes upwards in the upper part of an up-down direction center part. For this reason, since the change of the outer diameter of the diameter-expanding member 50 becomes gentler than that of the diameter-expanding member (second comparative example) configured only by the lower portion of the central portion in the vertical direction, The edge at the center in the vertical direction of 50 is not easily caught by the tube 120. Thereby, compared with the said 2nd comparative example, the roll body 110 is inserted in the tube 120 smoothly.

  In addition, when a diameter-expanding member composed only of the lower part of the central part in the vertical direction is inserted into the tube 120, the diameter of the tube 120 is increased, and then the diameter is rapidly decreased. Therefore, when the diameter-expanding member 50 stops in the middle of the insertion of the tube 120, there is a possibility that the tube 120 may be damaged by the edge of the diameter-expanding member that has been enlarged.

  In the present embodiment, the roll body 110 is covered with the tube 120 in a state where the guide cone 220 is fitted to the lower end portion of the roll body 110. Since the guide cone 220 fitted to the lower end portion of the roll body 110 and the expansion portion 216 holding the lower end portion of the tube 120 are arranged on the same axis, the guide cone 220 does not fit the roll body 110. Compared with (3rd comparative example), the coaxiality of the roll body 110 and the tube 120 improves. In particular, the coaxiality between the roll body 110 and the tube 120 is improved on the lower end side of the roll body 110.

  Since the coaxiality between the roll body 110 and the tube 120 is improved, the tube 120 is reduced in diameter from a state in which the variation in the distance between the expanded diameter of the tube 120 and the roll body 110 is suppressed. The roll body 110 is covered. Thereby, generation | occurrence | production of the wrinkle of the tube 120 is suppressed compared with the said 3rd comparative example. In particular, the occurrence of wrinkles in the tube 120 is suppressed on the lower end side of the roll body 110.

  In the present embodiment, the roll body 110 is covered with the tube 120 in a state where the fitting member 80 is fitted to the opening edge 20 </ b> B of the container 20. Since the fitting member 80 is coaxially mounted on the upper end portion of the roll body 110 and is coaxially fitted to the peripheral wall portion 38 that holds the tube 120, the fitting member 80 is fitted to the peripheral wall portion 38. The coaxiality between the roll body 110 and the tube 120 is improved as compared with the case where it is not performed (fourth comparative example). In particular, the coaxiality between the roll body 110 and the tube 120 is improved on the upper end side of the roll body 110.

  Since the coaxiality between the roll body 110 and the tube 120 is improved, the tube 120 is reduced in diameter from a state in which the variation in the distance between the expanded diameter of the tube 120 and the roll body 110 is suppressed. The roll body 110 is covered. Thereby, generation | occurrence | production of the wrinkle of the tube 120 is suppressed compared with the said 4th comparative example. In particular, the occurrence of wrinkles in the tube 120 is suppressed on the upper end side of the roll body 110. As described above, in the present embodiment, the occurrence of wrinkles in the tube 120 is suppressed in the entire axial direction of the roll body 110 by suppressing the occurrence of wrinkles in the tube 120 on the upper end side and the lower end side of the roll body 110. It is suppressed.

  In the present embodiment, the guide cone 220 is fitted to the lower end portion of the roll body 110 as described above. Here, in the case where the diameter expanding member 50 is mounted so as to protrude outward in the axial direction from the lower end portion of the roll body 110 and the guide cone 220 is fitted to the diameter expanding member 50 (sixth comparative example). The distance from the inflating part 216 to the lower end part of the roll body 110 needs to be long, and the tube 120 needs to be lengthened accordingly. On the other hand, in this embodiment, since the guide cone 220 is fitted to the lower end portion of the roll body 110, the axial length of the tube 120 can be shorter than that of the sixth comparative example, and the discard margin (cuts). Part) becomes shorter.

(Modification)
In the present embodiment, the guide cone 220 is configured to be fitted to the lower end portion of the roll body 110, but is not limited thereto. For example, the guide cone 220 may be configured to fit into the diameter-expanding member 50 as shown in FIG. In the configuration shown in FIG. 26, the diameter-expanding member 50 has a concave portion 53 into which the lower supported portion 116 (shaft portion 112) on the lower side of the roll body 110 is inserted in the axial direction at the upper end portion (one axial end portion). Yes. By inserting the supported portion 116 on the lower side of the roll body 110 into the recess 53, the diameter expanding member 50 is mounted on the roll body 110 in a state of projecting outward from the lower end portion of the roll body 110 in the axial direction.

  Further, the diameter-expanding member 50 has a fitting recess 51 (an example of a fitted portion) into which the guide cone 220 is fitted at the lower end (the other end in the axial direction). The fitting recess 51 is arranged coaxially with respect to the shaft portion 112 in a state where the diameter expanding member 50 is mounted on the roll body 110. In addition, the structure by which a fitting recessed part is arrange | positioned at the lower holding mechanism 200, and the convex part fitted to a fitting recessed part is arrange | positioned at the diameter expansion member 50 (roll body 110) side may be sufficient.

  In the above-described embodiment, the roll body 110 having the shaft portion 112 and the cylindrical elastic body 114 formed on the outer periphery of the shaft portion 112 is used as the core body, but is not limited thereto. For example, only the shaft portion 112 may be used as the core body.

  In the above-described embodiment, the adhesive 130 is applied to the roll body 110, but the present invention is not limited to this. For example, the adhesive 130 may be applied to the inner peripheral surface of the tube 120. Moreover, the structure by which the adhesive agent 130 is not apply | coated to either the roll body 110 or the tube 120 may be sufficient.

  In the above-described embodiment, the tube covering roll 100 as an example of the cylindrical body covering member is manufactured, but the cylindrical body covering member to be manufactured is not limited to this. For example, the tube covering member may be a tube covering belt formed by covering a belt body with a tube 120. In the case of a tube-covered belt, a core body having a core material and a cylindrical belt body (an example of a tubular body) formed on the outer periphery of the core material is used. That is, the core body is inserted into the tube 120 in the same manner as the roll body 110 described above, and the belt body is covered with the tube 120. Then, the tube covering belt is manufactured by removing the core material from the belt body covered with the tube 120 (an example of the sixth step). As the belt body, a resin belt formed of polyimide or the like, a metal belt, or the like is used.

  In the above-described embodiment, the upper end portion of the tube 120 is held by the four claw portions 420. However, the present invention is not limited to this. For example, the structure may be such that the upper end portion of the tube 120 is adsorbed and held on the inner peripheral surface of the peripheral wall portion 38 by suction through a plurality of suction holes formed in the peripheral wall portion 38.

  In the manufacturing method described above, after the suction pump 72 of the suction mechanism 70 is driven to start the suction of the air inside the container 20, the roll body 110 having the diameter-expanding member 50 attached to the lower end is attached to the upper end of the tube 120. However, it is not limited to this. For example, after inserting the roll body 110 having the diameter expanding member 50 attached to the lower end portion into the upper end portion of the tube 120, the suction pump 72 of the suction mechanism 70 is driven to start sucking the air inside the container 20. Also good.

  In the manufacturing apparatus 10, the tube 120 is arranged along the vertical direction, but is not limited thereto. For example, the container 20 may be installed along the horizontal direction, and the tube 120 may be arranged along the horizontal direction.

  The present invention is not limited to the above-described embodiment, and various modifications, changes, and improvements can be made without departing from the spirit of the present invention. For example, the modification examples described above may be appropriately combined.

DESCRIPTION OF SYMBOLS 10 Manufacturing apparatus 20 Container 20B Opening edge 50 Diameter-expanding member 70 Suction mechanism (an example of a suction part)
80 Fitting member (an example of a rear end side fitting portion)
100 Tube covering roll (an example of a cylindrical covering member)
110 Roll body (an example of a core body)
112A Open end (example of mated part)
120 tube (an example of a cylinder)
130 Adhesive 200 Lower holding mechanism (an example of a holding part)
220 Guide cone (example of fitting part)
222A Cylindrical surface

Claims (18)

A container in which a cylindrical body is accommodated and holding one end of the cylindrical body at an opening edge;
An outer diameter larger than the outer diameter of the core body inserted into the cylindrical body, and a diameter-expanding member attached to the end of the core body in the insertion direction,
A holding portion for holding the other end portion of the cylindrical body from the inside in the container, the holding portion provided at the distal end in the insertion direction of the diameter expanding member or the core body in the holding state. The holding part having a fitting part fitted along the axial direction of the cylindrical body;
By inserting the core body into the cylinder body from the one end of the cylinder body by sucking the gas in the container, the portion of the cylinder body expanded by the passage of the diameter expanding member The diameter difference is maintained by the pressure difference, and the pressure difference is eliminated by stopping the suction and the core body is covered with the cylindrical body while the fitting portion is fitted to the fitted portion. A suction part;
An apparatus for manufacturing a cylindrical covering member. The core body is formed in a tubular shape with the opening end on the distal end side in the insertion direction being the fitted portion,
The manufacturing apparatus of the cylinder covering member according to claim 1, wherein the fitting portion has a cylindrical surface fitted inside the opening end. A rear end side fitting portion that is mounted on the outer periphery of the end portion on the rear end side in the insertion direction of the core body and is fitted along the axial direction of the cylindrical body in the holding state with respect to the inner side of the opening edge. Prepared,
The suction part covers the core body with the cylindrical body by eliminating the pressure difference by stopping the suction in a state where the rear end side fitting part is fitted inside the opening edge. The manufacturing apparatus of the cylinder coating | coated member of 1 or 2. 4. The suction part covers the core body with the cylinder by eliminating the pressure difference and stopping the suction in a state where the diameter-expanding member is in the other end of the cylinder. The manufacturing apparatus of the cylinder coating | coated member of any one of these. The holding portion moves along the axial direction of the cylindrical body to give axial tension to the cylindrical body,
The suction portion covers the core body with the cylindrical body by eliminating the pressure difference by stopping the suction in a state where the holding portion applies an axial tension to the other end portion of the cylindrical body. The manufacturing apparatus of the cylinder body covering member of any one of Claims 1-4. The core body is one in which an adhesive is applied to the outer peripheral surface thereof,
The manufacturing apparatus of the cylindrical body covering member according to any one of claims 1 to 5, wherein the diameter-expanding member has an outer diameter larger than an outer diameter of the core body including the adhesive. The core body is composed of a tubular body,
The manufacturing apparatus of the cylindrical body covering member according to any one of claims 1 to 6, wherein the tubular body is mounted on an outer periphery and includes a columnar or cylindrical core member that is pulled out from the tubular body. The manufacturing apparatus of the cylinder covering member according to any one of claims 1 to 7, wherein the diameter increasing member is gradually increased in diameter from an insertion direction to the cylinder body in an opposite direction. The manufacturing method of the cylindrical body covering member according to any one of claims 1 to 8, wherein the diameter increasing member is gradually increased in diameter from the insertion direction to the opposite direction to the cylindrical body and then gradually decreased in diameter. apparatus. A first step of preparing the cylindrical body covering member manufacturing apparatus according to any one of claims 1 to 9,
A second step of holding the other end portion of the cylindrical body by the holding portion, and holding the one end portion of the cylindrical body by an opening edge of the container;
Due to the suction of the gas in the container, the diameter-expanding member is expanded by the passage of the diameter-expanding member while inserting the core body attached to the end on the distal end side in the insertion direction from one end of the cylindrical body. A third step of maintaining the cylindrical portion in a diameter-expanded state by a pressure difference inside and outside the cylinder;
A fourth step of fitting the fitting portion to the fitted portion along the axial direction of the cylindrical body in a holding state;
In a state where the fitting portion is fitted to the fitted portion, a fifth process of covering the core body with the cylindrical body by eliminating the pressure difference by stopping the suction;
The manufacturing method of the cylindrical body covering member which has this. The core body is formed in a tubular shape with the opening end on the distal end side in the insertion direction being the fitted portion,
The manufacturing method of the cylindrical body covering member according to claim 10, wherein in the fourth step, the fitting portion having a cylindrical surface fitted inside the opening end is used. In said 1st process, the manufacturing apparatus of the cylindrical body covering member of Claim 3 is prepared,
In the fourth step, the rear end side fitting portion is fitted inside the opening edge along the axial direction of the cylindrical body in the holding state,
In the fifth step, in the state where the rear end side fitting portion is fitted inside the opening edge, the pressure difference is eliminated by stopping the suction, and the core body is covered with the cylindrical body. Item 12. A method for producing a cylindrical body covering member according to Item 10 or 11. The said 5th process WHEREIN: The said pressure difference is eliminated in the state which has the said diameter expansion member in the other end part of the said cylinder, and the said core is covered with the said cylinder, The any one of Claims 10-12 The manufacturing method of the cylinder covering member of description. In the fifth step, in the state where tension in the axial direction is applied to the cylindrical body by moving the holding portion along the axial direction of the cylindrical body, the pressure difference is eliminated with the cylindrical body. The manufacturing method of the cylinder coating | coated member of any one of Claims 10-13 which coat | covers a core. The core body is coated with an adhesive on its outer peripheral surface,
The manufacturing method of the cylindrical body covering member according to any one of claims 10 to 14, wherein the diameter-expanding member has an outer diameter larger than an outer diameter of the core body including the adhesive. The core body is composed of a tubular body mounted on the outer periphery of a columnar or cylindrical core material,
The manufacturing method of the cylinder covering member according to any one of claims 10 to 15, further comprising a sixth step of removing the core material from the tubular body covered with the cylinder. The method for manufacturing a cylindrical body covering member according to any one of claims 10 to 16, wherein the diameter increasing member is gradually increased in diameter from an insertion direction to the cylindrical body in an opposite direction. 18. The cylinder covering member according to claim 10, wherein the diameter increasing member is gradually increased in diameter from the insertion direction to the opposite direction to the cylinder and then gradually decreased in diameter. Method.

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