JP4650672B2 - Sheet member winding drum - Google Patents

Description

  The present invention relates to a molding drum for forming a cylindrical member by winding a sheet-like member composed of an inner liner member, a sidewall member, and a carcass member, which are constituent members of a pneumatic tire for an automobile, around the outer peripheral surface, The present invention relates to a sheet-like member winding drum used as a transfer drum for winding a member.

  Generally, in the manufacturing process of a pneumatic tire for automobiles, a cylindrical member constituting a part of an unvulcanized tire is formed by winding a plurality of types of sheet-like members around a cylindrical forming drum. Further, when the sheet-like member is wound around the forming drum, the sheet-like member may be once wound around a transfer drum different from the forming drum and wound from the transfer drum onto the forming drum. Here, a plurality of suction holes for sucking the sheet-like member are provided on the outer peripheral surface of each drum, and the sheet-like member is securely held on the outer peripheral surface of the drum by sucking air from the suction hole. I have to. Further, the range of the suction holes for sucking air is switched so as not to suck air unnecessarily from the suction holes that do not suck the sheet-like member.

  As such a drum, a drum body formed in a hollow shape, a plurality of suction holes which are provided over the entire outer peripheral surface of the drum body and communicate with each other in the drum body, and air in the drum body are externally provided. Suction means for sucking, two width direction adjustment plates provided in the drum body so as to be movable in the axial direction of the drum body, and a circumferential direction provided in the drum body so as to be movable in the circumferential direction of the drum body An adjustment plate is provided, and air between the width direction adjustment plates is sucked by suction means, and suction holes at arbitrary positions in the circumferential direction are closed by the circumferential direction adjustment plate (for example, known) , See Patent Document 1).

A drum body comprising a plurality of drum members arranged in the circumferential direction; a plurality of suction holes arranged in the axial direction of the drum body on at least one drum member of each drum member; A suction means that communicates with each other; and an on-off valve that can open and close each suction hole. The on-off valve is formed so that a part of the valve body protrudes outside the outer diameter of the drum body. Is configured so that the suction hole is opened when it moves to the inside of the drum body against the urging force of the spring, and when the sheet-like member abuts on the valve body, the valve body moves to the inside of the drum body to form a sheet A member that adsorbs a member is known (for example, see Patent Document 2).
JP 2003-154580 A Japanese Utility Model Publication No. 5-24343

  However, in order to switch the range of the suction holes for sucking air, in the former case, a moving mechanism for moving each adjustment plate is required, and in the latter case, it is necessary to provide an opening / closing valve for each suction hole. There is a problem in that the structure of the drum becomes complicated, leading to a failure of the drum and an increase in manufacturing cost of the drum.

  Further, in the latter case, when a thin soft sheet-like member such as an inner liner member is wound around the drum, an unnecessary contact mark is generated on the sheet-like member due to the biasing force that biases the valve body to the outside of the drum. There was a point.

  The present invention has been made in view of the above-mentioned problems, and the object of the present invention is to make it possible to reliably switch the range of the suction holes for sucking air with a simple structure and to make unnecessary contact with the sheet-like member. An object of the present invention is to provide a winding drum for a sheet-like member which does not leave a mark.

  In order to achieve the above object, the present invention has a plurality of suction holes arranged in the axial direction of the drum body at predetermined positions in the circumferential direction of the drum body, and sucks air from each suction hole into the drum body by suction means. In the winding drum of the sheet-like member that winds the sheet-like member around the drum body while adsorbing the sheet-like member to each adsorption hole, a hollow portion that communicates with each adsorption hole is provided in the drum body. In the hollow portion, an adsorption hole switching member having an air flow passage that communicates the suction holes in the predetermined axial range of the drum body with the suction means is detachably provided in the hollow portion, and the adsorption hole switching member is provided as an air flow passage. Are provided so as to be exchangeable with other suction hole switching members having different ranges communicating with the suction holes.

  As a result, the range of the suction holes communicating with the suction means is switched by replacing the suction hole switching member. Therefore, the range of the suction holes for sucking air can be switched by replacing the suction hole switching member. . Further, since the suction hole switching member is provided in the hollow portion, the suction hole switching member does not protrude from the respective suction holes to the outside of the drum body.

  Further, the present invention has a plurality of suction holes arranged in the axial direction of the drum body at predetermined positions in the circumferential direction of the drum body, and by sucking air from the suction holes into the drum body by suction means, In the winding drum of the sheet-like member that winds the sheet-like member around the drum body while adsorbing the sheet-like member to the adsorption hole, a hollow portion communicating with each adsorption hole is provided in the drum body, A suction hole switching member that is rotatable along its inner peripheral surface is provided, and the suction hole switching member is provided with suction holes and suction means within a predetermined range in the axial direction of the drum body at each predetermined position in the circumferential direction. An air flow passage is provided which communicates and communicates suction holes and suction holes in another predetermined range in the axial direction different from the predetermined range in the axial direction at other predetermined positions in the circumferential direction.

  As a result, the range of the suction holes communicating with the suction means is switched by rotating the suction hole switching member, so that the range of the suction holes for sucking air is switched by rotating the suction hole switching member. Can do. Further, since the suction hole switching member is provided in the hollow portion, the suction hole switching member does not protrude from the respective suction holes to the outside of the drum body.

  According to the present invention, since the range of the suction holes through which the air is sucked can be switched by exchanging or rotating the suction hole switching member, the range of the suction holes through which the air is sucked can be switched reliably with a simple structure. It is possible to prevent failure of the drum body and reduce the manufacturing cost of the drum body. Further, since the suction hole switching member does not protrude from the suction hole to the outside of the drum body, it is unnecessary for the sheet-like member when winding a thin soft sheet-like member such as an inner liner member around the drum body. Quality can be improved without making contact marks.

  1 to 4 show a first embodiment of the present invention, FIG. 1 is a perspective view of a drum body, and FIG. 2 is a perspective view of a suction drum member showing a state before the suction hole switching member is inserted. 3 is a front view of the suction hole switching member, and FIG. 4 is a plan sectional view of the suction drum member showing a state in which the suction hole switching member is inserted.

  The sheet-like member winding drum includes a plurality of drum members 10 that are spaced apart from each other in the circumferential direction of the drum body 1, an adsorption drum member 11 that constitutes one of the drum members 10, and A plurality of suction holes 12 provided in the suction drum member 11, a hollow portion 13 formed in the suction drum member 11 so as to extend in the axial direction of the drum main body 1, and a hollow portion 13 are detachably inserted. The suction hole switching member 14 is provided.

  Each drum member 10 and the suction drum member 11 are supported by a known expansion / contraction mechanism so as to be movable in the radial direction of the drum main body 1, and the outer peripheral surface of the drum main body 1 is formed by each drum member 10 and the suction drum member 11. ing.

  Each suction hole 12 is arranged in two rows in the axial direction of the drum body 1, and each suction hole 12 communicates with the hollow portion 13. The openings on the hollow portion 13 side of each suction hole 12 are arranged in two rows on the inner peripheral surface of the hollow portion 13 in the axial direction of the drum body 1.

  The hollow portion 13 is formed in a circular cross section and opens on one end surface side in the axial direction of the drum body 1. In addition, two suction holes 13a are provided on the inner peripheral surface of the hollow part 13 on the opening part side in the circumferential direction, and the opening part on the hollow part 13 side of each suction hole 13a is a suction described later. The suction hole 13a is in communication with one end surface in the axial direction of the suction drum member 11 and has an inner diameter larger than that of the communication hole 14d. Further, each suction hole 13a is connected to a well-known vacuum pump as suction means (not shown) so that the air in the hollow portion 13 can be sucked by the vacuum pump.

  The suction hole switching member 14 is provided on an insertion portion 14a formed in a cylindrical shape having an outer diameter slightly smaller than the inner diameter of the hollow portion 13 and one end side of the insertion portion 14a, and is larger than the outer diameter of the insertion portion 14a. It is comprised from the holding part 14b formed in the disk shape of an outer diameter. The insertion portion 14a is closed at one end side by the gripping portion 14b and opened at the other end side, and an axial communication hole 14c is formed as a first communication hole on the inner peripheral surface side of the insertion portion 14a. .

  Two suction communication holes 14d as second communication holes penetrating through the axial communication holes 14c are provided on the outer peripheral surface on one end side of the insertion portion 14a at intervals in the circumferential direction. When the suction hole switching member 14 is inserted into the hollow portion 13 so that the one end face in the axial direction and the gripping portion 14b are in contact with each other, the suction holes 13a and the suction communication holes 14d communicate with each other. . Further, on the outer peripheral surface on the other end side of the insertion portion 14a, there are provided two long holes 14e as second communication holes penetrating the axial communication hole 14c at intervals in the circumferential direction, and each of the long holes 14e. Is formed so as to extend in the axial direction of the suction hole switching member 14, and when the suction hole switching member 14 is inserted into the hollow portion 13 so that one end surface in the axial direction of the suction drum member 11 and the gripping portion 14b come into contact with each other, The suction holes 12 in a predetermined range in the axial direction communicate with the long holes 14e. On the other hand, the openings on the hollow portion 13 side in the other suction holes 12 that are not communicated with the long holes 14e are closed by the outer peripheral surface of the insertion portion 14a and are not in communication with the suction holes 13a.

  In the sheet-like member winding drum configured as described above, the suction hole switching member 14 is inserted into the hollow portion 13 and air is sucked from the suction holes 13a by a vacuum pump (not shown) to Air is sucked from each of the suction holes 12 in a predetermined axial direction with which the holes 14e communicate. Further, by inserting another suction hole switching member 14 in which the axial range of each long hole 14e is different from the suction hole switching member 14 into the hollow portion 13, each long hole 14e becomes the predetermined range in the axial direction. The air is sucked from the suction holes 12 in the other predetermined range in the axial direction.

  As described above, according to the present embodiment, the hollow portion 13, the plurality of suction holes 12, and the suction holes 13a are respectively communicated, and the suction holes 12 in the predetermined range in the axial direction are communicated with the suction holes 13a. In addition, since the suction hole switching member 14 that does not communicate with the other suction holes 12 and the suction holes 13a is detachably inserted into the hollow portion 13, the suction holes 12 within a predetermined range in the axial direction of the suction holes 12 are inserted. Air can be sucked from. Further, by inserting another suction hole switching member 14 having a different axial range of each of the long holes 14 e into the hollow portion 13, air is sucked from the suction holes 12 of another predetermined range in the axial direction different from the predetermined range in the axial direction. Therefore, the range of the suction holes 12 for sucking air can be switched by replacing the suction hole switching member 14. That is, the range of the suction holes 12 for sucking air can be switched reliably with a simple structure, so that failure of the drum body 1 can be prevented and the manufacturing cost of the drum body 1 can be reduced.

  Further, since the suction hole switching member 14 does not protrude from the suction holes to the outside of the drum main body 1, when a thin soft sheet-like member such as an inner liner member is wound around the drum main body, Quality can be improved without causing unnecessary contact marks.

  Furthermore, since the opening on the hollow portion 13 side of each suction hole 13a is formed to have an inner diameter larger than that of each suction communication hole 14d, the position of the suction hole switching member 14 is changed when the suction hole switching member 14 is replaced. Even if they slightly deviate, each suction communication hole 14d and each suction hole 13a can be reliably communicated with each other.

  In addition, the insertion portion 14 a of the suction hole switching member 14 is formed in a cylindrical shape having an outer diameter slightly smaller than the inner diameter of the hollow portion 13, and the suction hole 13 a and the axial communication hole are formed on the outer peripheral surface of the suction hole switching member 14. A suction communication hole 14d that communicates with 14c, and a long hole 14e that communicates the suction hole 12 in a predetermined range in the axial direction with each of the suction holes 12 and the axial communication hole 14c. The suction holes 12 and the suction holes 13a in a predetermined axial direction are communicated with each other by the communication holes 14d and the long holes 14e, and the other suction holes 12 and each suction hole 13a are not communicated with each other by the outer peripheral surface of the insertion portion 14a. Therefore, the range of the suction hole 12 for sucking air can be switched reliably, and the structure of the suction hole switching member 14 can be simplified.

  In the present embodiment, the hollow portion 13 is formed in a circular cross section and the insertion portion 12a is formed in a cylindrical shape. However, the hollow portion 13 is formed in a polygonal cross section, and the insertion portion 12a is formed. It is also possible to form a member having a polygonal cross section having an outer shape substantially equal to the inner shape of the hollow portion 13.

  In the present embodiment, the range of the suction hole 12 for sucking air is switched by using the cylindrical insertion portion 14a formed so as to extend along the inner peripheral surface of the hollow portion 13 over the entire circumference. Although shown, even if the insertion portion is formed only along the vicinity of the opening on the hollow portion 13 side in each suction hole 12, the same effect as described above can be obtained. For example, two plate-like members are formed along the vicinity of the opening on the side of the hollow portion 13 in each suction hole 12 and communicated with the suction holes 12 and suction holes 13a in a predetermined range in the axial direction. By providing the communication hole, the range of the suction hole 12 for sucking air can be switched.

  In the present embodiment, the suction hole switching member 14 includes two suction communication holes 14d and two elongate holes 14e in the insertion portion 14a. As shown in FIG. 5, two suction holes serving as other second communication holes are located at positions different from each suction communication hole 14d by 90 ° in the circumferential direction. 14 f for communication use, and two long holes 14 g as other second communication holes are provided at positions different from the respective long holes 14 e by 90 ° in the circumferential direction, and the long holes 14 g are different from the predetermined range in the axial direction. It can also be formed so as to communicate with the suction holes 12 in a predetermined range in the axial direction. Here, since the hollow portion 13 is formed in a circular shape in cross section, and the insertion portion 14a is formed in a cylindrical shape having an outer diameter slightly smaller than the inner diameter of the hollow portion 13, the suction hole switching member 14 is formed as a hollow portion. It can be rotated along 13 inner peripheral surfaces.

  As a result, the suction holes 12 in the predetermined range in the axial direction and the suction holes 13a communicate with each other at predetermined positions in the circumferential direction, and air is sucked from the suction holes 12 in the predetermined range in the axial direction and rotated 90 ° from the predetermined position in the circumferential direction. At the other predetermined positions in the circumferential direction, the suction holes 12 in the other predetermined ranges in the axial direction communicate with the suction holes 13a, and air is sucked from the suction holes 12 in the other predetermined ranges in the axial direction. That is, the range of the suction hole 12 for sucking air can be switched by rotating the suction hole switching member 14, and the structure of the drum body 1 is complicated in order to switch the range of the suction hole 12 for sucking air. There is no need to prevent failure of the drum body 1 and reduce the manufacturing cost of the drum body 1.

  When the suction hole switching member 14 is rotated to switch the range of the suction holes 12 for sucking air, the suction holes for sucking air can be provided without detachably providing the suction hole switching member 14 in the hollow portion 13. Twelve ranges can be switched.

  Further, as shown in FIG. 6, the suction hole switching member 15 having the same insertion portion 15a, gripping portion 15b, axial communication hole 15c and suction communication holes 15d, 15f as the suction hole switching member 14 is provided with a long hole 14e. It is also possible to provide long holes 15e as second communication holes in a shape in which the long holes 14g and the long holes 14g are integrated with each other at two positions spaced apart from each other in the circumferential direction. As a result, the suction holes 12 in the predetermined range in the axial direction and the suction holes 13a communicate with each other at predetermined positions in the circumferential direction, and air is sucked from the suction holes 12 in the predetermined range in the axial direction and rotated 90 ° from the predetermined position in the circumferential direction. At the other predetermined positions in the circumferential direction, the suction holes 12 in the other predetermined ranges in the axial direction communicate with the suction holes 13a, and air is sucked from the suction holes 12 in the other predetermined ranges in the axial direction.

  Furthermore, each long hole 15e and each suction communication hole 15d can be formed integrally, and each long hole 15e and each suction communication hole 15d can be formed integrally.

  When the suction hole switching member 14 or the suction hole switching member 15 is rotated to switch the range of the suction holes 12 for sucking air, the long holes of the suction hole switching members 14 and 15 are set at three or more circumferential predetermined positions. In this case, three or more kinds of switching can be performed by a single suction hole switching member 14, 15 by communicating with suction holes 12 having different predetermined ranges in the axial direction.

  In the present embodiment, the suction hole 13a is formed so that the inner peripheral surface of the hollow portion 13 and the one end surface in the axial direction of the suction drum member 11 communicate with each other. However, the suction hole 13a is sucked. It is also possible to form the hole switching member 14 so as to penetrate the gripping portion 14b.

  7 and 8 show a second embodiment of the present invention, FIG. 7 is a front view of the suction hole switching member, and FIG. 8 is a plan view of the suction drum member showing a state in which the suction hole switching member is inserted. It is. The same components as those in the first embodiment are denoted by the same reference numerals. In the first embodiment, the suction hole 12 and the suction hole 13a in a predetermined axial direction are communicated by the axial communication hole 14c, the suction communication hole 14d, and the long hole 14e provided in the suction hole switching member 14. In the present embodiment, the suction hole 12 in the predetermined range in the axial direction and the suction hole 13a are communicated with each other by the groove portion 16c provided in the insertion portion 16a of the suction hole switching member 16. It shows what was made.

  Specifically, the suction hole switching member 16 is provided on an insertion portion 16a formed in a cylindrical shape having an outer diameter slightly smaller than the inner diameter of the hollow portion 13, and one end side of the insertion portion 16a. The holding portion 16b is formed in a disc shape having an outer diameter larger than the outer diameter, and two outer circumferential surfaces of the insertion portion 16a are formed so as to extend in the axial direction at intervals in the circumferential direction. A groove portion 16c is provided.

  Further, the hollow portion 17 into which the suction hole switching member 16 is detachably inserted communicates with each suction hole 12, and the axially central portion of the inner peripheral surface of the hollow portion 17 is spaced apart from each other in the circumferential direction. Two suction holes 17 a are provided, and each suction hole 17 a communicates with one axial end surface of the suction drum member 11. Further, the opening on the hollow portion 17 side of each suction hole 17 a and the opening on the hollow portion 17 side of each suction hole 12 are provided so as to be aligned in the axial direction on the inner peripheral surface of the hollow portion 17.

  Accordingly, by inserting the suction hole switching member 16 into the hollow portion 17, the suction holes 12 in the predetermined range in the axial direction communicate with the suction holes 17 a and air is sucked from the suction holes 12 in the predetermined range in the axial direction. In addition, the other suction holes 12 and the suction holes 17 a are not communicated with each other by the outer peripheral surface of the suction hole switching member 16.

  In the present embodiment, the hollow portion 17 is formed in a circular cross section and the insertion portion 16a is formed in a cylindrical shape. However, the hollow portion 17 is formed in a polygonal cross section and the insertion portion 16a is formed. It is also possible to form a member having a polygonal cross section having an outer shape substantially equal to the inner shape of the hollow portion 17.

  In the present embodiment, the suction hole 12 and the suction hole 17a in a predetermined range in the axial direction are communicated with each other by the groove portion 16c formed so as to extend in the axial direction on the outer peripheral surface of the insertion portion 16a. As shown in FIG. 9, instead of the groove portion 16c, by providing a small diameter portion 16d having a smaller outer diameter than the other outer diameter of the insertion portion 16a in a predetermined axial range of the insertion portion 16a, the axial direction A predetermined range of the suction holes 12 and the suction holes 17a can be communicated with each other.

  Further, in the present embodiment, the two groove portions 16c are provided in the insertion portion 16a of the suction hole switching member 16, and the suction holes 12 in the predetermined range in the axial direction and the suction holes 17a are communicated with each other at a predetermined position in the circumferential direction. As shown in FIG. 10, as shown in FIG. 10, two groove portions 16 e as other groove portions are provided at positions different from each groove portion by 90 ° in the circumferential direction, and each groove portion 16 e is different from the predetermined range in the axial direction. The suction holes 12 in a predetermined range in the axial direction can be formed so as to communicate with the suction holes 17a.

  As a result, the suction holes 12 in a predetermined range in the axial direction and the suction holes 17a communicate with each other at a predetermined position in the circumferential direction, and air is sucked from the suction holes 12 in the predetermined range in the axial direction and rotated 90 ° from the predetermined position in the circumferential direction. At other predetermined positions in the circumferential direction, the suction holes 12 in the other predetermined ranges in the axial direction communicate with the suction holes 17a, and air is sucked from the suction holes 12 in the other predetermined ranges in the axial direction.

  Moreover, as shown in FIG. 11, it is also possible to provide the groove part 16f of the shape which integrated the groove part 16c and the groove part 16e in the insertion part 16a in two places at intervals in the circumferential direction. Furthermore, it is possible to integrally form the grooves 16f.

  In addition, when the groove part 16c is provided in the insertion part 16a of the suction hole switching member 16 and the suction hole 12 in a predetermined range in the axial direction communicates with each suction hole 17a, the hollow part in the other suction hole 12 that is not communicated by the groove part 16c. Even if all the openings on the 17 side are not closed by the outer peripheral surface of the insertion portion 16a, as shown in FIG. 12, the other suction holes 12 and the suction holes 17a are not in communication with each other by the outer peripheral surface of the insertion portion 16a. Can do.

  Further, when the suction hole switching member 16 is rotated to switch the range of the suction holes 12 for sucking air, the groove portions of the suction hole switching member 16 are suctioned in different axial predetermined ranges at three or more circumferential predetermined positions. By forming it so as to communicate with the hole 12, it is possible to perform three or more types of switching by one suction hole switching member 16.

  In the present embodiment, a plurality of suction holes 12 are provided in the suction drum member 11 constituting one of the plurality of drum members 10 spaced apart from each other in the circumferential direction of the drum body 1 to suck air. Although the suction hole 12 is switched in the range, the suction drum member 21 is provided on a part of the outer peripheral surface 20a of the drum body 20 formed in a hollow shape, and a plurality of suction drum members 21 are provided on the suction drum member 21. The suction hole 22, the hollow portion 23, and the suction hole 23a are provided, and the suction hole switching member similar to that described above is provided in the hollow portion 23, whereby the range of the suction hole 22 for sucking air can be switched. . It is also possible to form the drum body 20 and the suction drum member 21 integrally.

The perspective view of the drum main body which shows 1st Embodiment in this invention The perspective view of the drum member for adsorption | suction which shows the state before inserting an adsorption | suction hole switching member Front view of adsorption hole switching member Cross-sectional plan view of the drum member for suction showing the state where the suction hole switching member is inserted The front view of the suction hole switching member which shows the 1st modification of the suction hole switching member in 1st Embodiment The front view of the suction hole switching member which shows the 2nd modification of the suction hole switching member in 1st Embodiment The front view of the suction hole switching member which shows 1st Embodiment in this invention The top view of the drum member for adsorption | suction which shows the state which inserted the adsorption hole switching member The front view of the suction hole switching member which shows the 1st modification of the suction hole switching member in 2nd Embodiment The front view of the suction hole switching member which shows the 2nd modification of the suction hole switching member in 2nd Embodiment The front view of the suction hole switching member which shows the 3rd modification of the suction hole switching member in 2nd Embodiment. The front view of the suction hole switching member which shows the 4th modification of the suction hole switching member in 2nd Embodiment. The perspective view of the drum main body which shows the modification of the drum main body in 2nd Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Drum main body, 10 ... Drum member, 11 ... Drum member for adsorption, 12 ... Adsorption hole, 13 ... Hollow part, 13a ... Hole for suction, 14 ... Adsorption hole switching member, 14a ... Insertion part, 14c ... Axial communication Hole, 14d ... Suction communication hole, 14e ... Long hole, 14f ... Suction communication hole, 14g ... Long hole, 15 ... Suction hole switching member, 15a ... Insertion part, 15c ... Axial communication hole, 15d ... Suction communication Hole 15e ... Long hole 16 ... Adsorption hole switching member 16a ... Insertion part 16c ... Groove part 16d ... Small diameter part 16e ... Groove part 16f ... Groove part 17 ... Hollow part 20 ... Drum body 20a ... Outer peripheral surface , 21 ... drum member for suction, 22 ... suction hole, 23 ... hollow portion, 23a ... hole for suction.

Claims (10)

A plurality of suction holes arranged in the axial direction of the drum body are provided at predetermined positions in the circumferential direction of the drum body, and air is sucked into the drum body from the suction holes by suction means, whereby a sheet-like member is placed in each suction hole. In the winding drum of the sheet-like member that winds the sheet-like member around the drum body while adsorbing
While providing a hollow portion communicating with each suction hole in the drum body,
In the hollow portion, a suction hole switching member having an air flow passage that communicates suction holes in a predetermined range in the axial direction of the drum body and suction means among the suction holes is detachably provided,
A winding drum for a sheet-like member, wherein the suction hole switching member is provided so as to be exchangeable with another suction hole switching member having a different range in which the air flow passage communicates with the suction hole. While forming the suction hole switching member by a member having an outer shape substantially equivalent to the inner shape of the hollow portion,
A first communication hole provided in the suction hole switching member so as to extend in the axial direction of the drum body, and a first communication hole and a predetermined range in the axial direction on the outer peripheral surface of the suction hole switching member. The winding drum for a sheet-like member according to claim 1, wherein the winding drum is formed from at least one second communication hole provided so as to communicate with the suction hole. While forming the suction hole switching member by a member having an outer shape substantially equivalent to the inner shape of the hollow portion,
The air flow passage is formed on the outer peripheral surface of the suction hole switching member so as to extend in the axial direction of the drum body, and is formed from a groove portion communicating with the suction holes in a predetermined range in the axial direction. A winding drum for sheet-like members. A plurality of suction holes arranged in the axial direction of the drum body are provided at predetermined positions in the circumferential direction of the drum body, and air is sucked into the drum body from the suction holes by suction means, whereby a sheet-like member is placed in each suction hole. In the winding drum of the sheet-like member that winds the sheet-like member around the drum body while adsorbing
While providing a hollow portion communicating with each suction hole in the drum body,
In the hollow portion, a suction hole switching member that is rotatable along its inner peripheral surface is provided,
The suction hole switching member communicates suction holes in a predetermined range in the axial direction of the drum body and suction means among the suction holes at a predetermined position in the circumferential direction, and is different from the predetermined range in the axial direction at other predetermined positions in the circumferential direction. An air flow passage that communicates the suction holes in a predetermined range in the axial direction with the suction means is provided. While forming the suction hole switching member by a member having an outer shape substantially equivalent to the inner shape of the hollow portion,
A first communication hole provided in the suction hole switching member so as to extend in the axial direction of the drum body, and a first communication hole at a predetermined position in the circumferential direction of the outer peripheral surface of the suction hole switching member. At least one second communication hole provided so as to communicate with the predetermined range of suction holes in the axial direction, the first communication hole and the other at a predetermined position in the other circumferential direction of the outer peripheral surface of the suction hole switching member. The sheet-like member winding drum according to claim 4, wherein the winding drum is formed of at least one other second communication hole provided so as to communicate with a predetermined range of suction holes in the axial direction. While forming the suction hole switching member by a member having an outer shape substantially equivalent to the inner shape of the hollow portion,
A first communication hole provided in the suction hole switching member so as to extend in the axial direction of the drum main body, and a first communication hole at a predetermined position in the circumferential direction and a suction in the predetermined range in the axial direction. A second hole provided on the outer peripheral surface of the suction hole switching member so as to communicate with the hole and to communicate the first communication hole with the suction hole in the other predetermined range in the axial direction at the other predetermined position in the circumferential direction; The sheet-shaped member winding drum according to claim 4, wherein the sheet-shaped member winding drum is formed from the communication hole. While forming the suction hole switching member by a member having an outer shape substantially equivalent to the inner shape of the hollow portion,
The air flow passage is provided at a predetermined position in the circumferential direction of the outer peripheral surface of the suction hole switching member so as to extend in the axial direction of the drum main body, and a groove portion communicating with the suction holes in the predetermined range in the axial direction; 5. The sheet-like member according to claim 4, wherein the sheet-like member is formed at another predetermined position in the circumferential direction so as to extend in the axial direction of the drum body and communicates with the suction holes in the other predetermined range in the axial direction. Winding drum. While forming the suction hole switching member by a member having an outer shape substantially equivalent to the inner shape of the hollow portion,
The air flow passage is provided on the outer peripheral surface of the suction hole switching member so as to extend in the axial direction of the drum body, communicates with the suction holes in the predetermined range in the axial direction at the predetermined position in the circumferential direction, and the other circumferential direction. 5. The sheet-shaped member winding drum according to claim 4, wherein the sheet-shaped member winding drum is formed from a groove portion that communicates with the suction hole in the other predetermined range in the axial direction at a predetermined position. The adsorption hole switching member is detachably provided in the hollow portion,
The sheet-like member according to claim 4, 5, 6, 7 or 8, wherein the suction hole switching member is provided so as to be exchangeable with another suction hole switching member having a different range in which the air flow passage communicates with the suction hole. Winding drum. The outer peripheral surface of the drum body is formed from a plurality of drum members arranged at intervals in the circumferential direction of the drum body,
The sheet-like member according to claim 1, 2, 3, 4, 5, 6, 7, 8 or 9, wherein each of the suction holes and the hollow portion is provided in at least one of the drum members. Winding drum.

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