JP2016101677A - Sheet-like member adhering retainer device, and tire manufacturing apparatus having said retainer device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sheet-like member adhering retainer device capable of discharging more reliably the air which can establish between an adhered member and a sheet-shaped member.SOLUTION: A retainer device 1 of the invention comprises: a roller 2 having a shank 21 and a plurality of disc-shaped members 22; and a holding member 3 for contacting with the outer circumferences of the disc-shaped members 22 for holding the outer circumferences of the disc-shaped members 22. These disc-shaped members 22 have an internal diameter capable of moving in the diametrical direction of the shank 21 relative to the shank 21. The holding member 3 is made diametrically large at a portion corresponding to the central part of the shank 21 and diametrically small from the central portion to the end portion.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a pressing device for sticking a sheet-like member and a tire manufacturing apparatus including the pressing device.

  In the manufacturing process of a tire, when a sheet-like member is attached to a member to be attached, for example, a method of pressure-bonding the sheet-like member to the member to be attached using a roller or the like is used. In this case, when the sheet-like member is attached to the member to be attached, air enters between the member to be attached and the sheet-like member, and the entered air gathers at the time of pressure bonding to form an air reservoir. There is. Such air accumulation is not preferable because it causes a tire failure.

  As a means for suppressing such air accumulation, Patent Document 1 discloses a sheet-like member attaching roll in which a plurality of minute protrusions are formed on the entire outer peripheral surface of a cylindrical body. The sheet-like member pasting roll of Patent Document 1 suppresses the air that has entered between the sheet-like members from being agglomerated by a plurality of minute protrusions when the sheet-like member is pasted. This is to suppress the occurrence.

JP 2012-51294 A

  However, the roll for sticking a sheet-like member of Patent Document 1 can once disperse a lump of air by microprojections, but cannot completely discharge air, which causes the occurrence of air accumulation. It is not solved effectively.

  Therefore, in view of such a problem, the present invention provides a pressing device for sticking a sheet-like member and the pressing device that can more reliably discharge air that may be generated between the member to be stuck and the sheet-like member. An object is to provide a tire manufacturing apparatus provided.

  The pressing device of the present invention is a pressing device for sticking a sheet-like member for sticking a sheet-like member on a member to be stuck on a tire member support, and the pressing device is pivotally supported at both ends. And a roller having a plurality of disc-shaped members formed annularly and through which the shaft portions are inserted, and an outer periphery of the plurality of disc-shaped members disposed substantially parallel to the shaft of the shaft portion And a pressing member that presses the outer periphery of the disk-shaped member, wherein the plurality of disk-shaped members have an inner diameter that is movable in the radial direction of the shaft portion with respect to the shaft portion, The pressing member is configured such that the outer diameter of the portion corresponding to the central portion of the shaft portion is large and the outer diameter decreases from the central portion toward the end portion, and the outer periphery of the plurality of disk-shaped members is formed by the pressing member. When is pressed, The disc-shaped member moves in accordance with the shape of the pressing member, and moves according to the height of the member to be adhered and the sheet-shaped member from above the tire member support. It is characterized by being.

  Further, the adherend member and the sheet-like member are moved on the tire member support, and the shaft portion of the roller is substantially perpendicular to the moving direction of the adherend member and the sheet-like member. When the plurality of disc-shaped members are pressed by the pressing member, the plurality of discs are arranged on the shaft portion. It is preferable to project toward the upstream side in the movement direction.

  Moreover, it is preferable that the plurality of disk-shaped members have substantially the same diameter.

  It is preferable that the plurality of disk-shaped members move with respect to the shaft portion according to the thickness of the member to be pasted and the sheet-shaped member.

  Moreover, it is preferable that the said pressing device is provided with the raising / lowering apparatus which moves the said roller and the said pressing member to the tire member support body freely.

  Moreover, the tire manufacturing apparatus of this invention is provided with the said holding | suppressing apparatus.

  According to the pressing device for sticking a sheet-like member of the present invention and the tire manufacturing apparatus provided with the pressing device, air that can be generated between the member to be stuck and the sheet-like member can be discharged more reliably.

It is a top view which shows the tire manufacturing apparatus which has a pressing device for sheet-like member sticking of this invention. It is the side view which looked at the tire manufacturing apparatus of Drawing 1 from the one end side of the roller of a pressing device. It is a front view which shows the state which the disk-shaped member of the pressing apparatus for sheet-like member sticking of this invention lifted by the to-be-attached member and the sheet-like member. It is the schematic which shows an example of the raising / lowering apparatus which raises / lowers the pressing apparatus for sheet-like member sticking. (A)-(c) is a conceptual diagram explaining discharge | emission of the air of the pressing device for sheet-like member sticking of this invention, (a) is an air reservoir between a member for sticking and a sheet-like member. (B) shows the state where the air reservoir is in contact with the contact area between the disk-like member and the sheet-like member, and (c) shows the state where the air in the air reservoir is in contact with the disk-like member and the sheet-like member. It shows a state of being discharged outward in the width direction along the contact area.

  Hereinafter, with reference to the drawings, a sheet-like member sticking pressing device (hereinafter simply referred to as a pressing device) and a tire manufacturing apparatus including the pressing device according to the present invention will be described in detail.

  As shown in FIG. 1 and FIG. 2, the tire manufacturing apparatus D includes a pressing device 1, and a sheet is attached to a member M <b> 1 that is a tire member that constitutes a tire on a tire member support S such as a conveyor. The tire-shaped member is manufactured by attaching the shaped member M2. The tire manufacturing apparatus D is not particularly limited as long as it is an apparatus used in the tire manufacturing process, and includes other apparatuses such as an extruder and other members in addition to the pressing apparatus 1 and the tire member support S. It may be.

  The tire member support S supports tire members such as the member to be attached M1 and the sheet member M2 in order to attach the member to be attached M1 and the sheet member M2. Although the tire member support S is shown as a conveyor in the present embodiment, the tire member support S supports a tire member such as a drum around which the member to be attached M1 or the sheet-like member M2 is wound. Other supports may be used. Further, the adherend member M1 and the sheet-like member M2 can be configured to be moved on a tire member support S such as a conveyor or a drum, and the adherend member M1 and the sheet-like member M2 are arranged. It may be moved while pasting.

  The adherend member M1 and the sheet-like member M2 are not particularly limited as long as they are tire members that are attached to each other. In the present embodiment, the adherend member M1 is a bead apex, and the sheet-like member M2 is a bead. The rubber sheet (strip apex) that is attached to the apex and is disposed between the bead apex and the ply after molding the tire will be described as an example. The member to be attached M1 and the sheet-like member M2 are: Other members in which air may enter between each other at the time of pasting may be used. For example, the adherend member M1 and the sheet-like member M2 are attached to the outer side wall of a truck bus tire, and an inner side wall rubber sheet for enhancing adhesion between a rubber chafer and other members or a white side wall It can be applied when a veneer rubber sheet covering white rubber is pasted.

  As shown in FIGS. 1 to 3, the pressing device 1 includes a roller 2 and a pressing member 3, and is used for attaching the sheet-like member M <b> 2 on the member to be attached M <b> 1 on the tire member support S. . In the present embodiment, the tire member support S (conveyor) moves so that the pressing device 1 does not move in the longitudinal direction of the member to be pasted M1 or the sheet-like member M2. However, you may comprise the pressing device 1 so that it may move to the longitudinal direction of the to-be-adhered member M1 or the sheet-like member M2. In this embodiment, as shown in FIG. 1, the pressing device 1 is disposed on the tire member support S, and includes a roller support portion 41 that supports the roller 2 and a pressing member support portion 42 that supports the pressing member 3. I have. Further, as shown in FIG. 4, the pressing device 1 may include an elevating device L that moves the roller 2 and the pressing member 3 with respect to the tire member support S so as to move freely. For example, the lifting device L can lift and lower the roller 2 and the pressing member 3 by attaching a cylinder L2 such as a hydraulic pressure to the base L1 and expanding and contracting a cylinder rod L3 protruding and retracting from the cylinder L2. By moving the pressing device 1 with respect to the tire member support S by the lifting device L, it is easy to guide the material of the member to be attached M1, the sheet-like member M2, and the like.

  The roller 2 presses the sheet-like member M2 attached to the member to be attached M1, and attaches the sheet-like member M2 to the member to be attached M1. The roller 2 includes a shaft portion 21 that is pivotally supported at both ends, and a plurality of disk-shaped members 22 that are formed in an annular shape and through which the shaft portion 21 is inserted.

  Both ends of the shaft portion 21 are pivotally supported by the roller support portion 41 and the like, and support the disk-shaped member 22. In this embodiment, as shown in FIG. 1, the shaft portion 21 extends in the width direction Y of the member to be attached M1 and the sheet-like member M2. In other words, the shaft portion 21 is disposed substantially perpendicular to the moving direction X of the adherend member M1 and the sheet-like member M2 (or the longitudinal direction of the adherend member M1 and the sheet-like member M2).

  The disk-shaped member 22 is disposed around the shaft portion 21, and a plurality of disk-shaped members 22 are provided side by side along the axial direction of the shaft portion 21 as shown in FIG. 1. In the present embodiment, the plurality of disk-shaped members 22 having substantially the same diameter are used. The disk-shaped member 22 is brought into contact with the surface of the sheet-like member M2 attached to the member to be attached M1 and the outer periphery thereof, and presses the surface of the sheet-like member M2 toward the member to be attached M1. The member M2 is attached to the member to be attached M1. The disk-like member 22 is configured to discharge air that has entered between the adherend member M1 and the sheet-like member M2, as will be described later.

  As shown in FIG. 2, the disk-shaped member 22 has a circular outer peripheral shape and an inner peripheral shape, and an opening into which the shaft portion 21 is inserted is formed. The part 21 has an inner diameter that is movable in the radial direction of the shaft part 21. Thereby, as FIG. 3 shows, the some disc-shaped member 22 can move with respect to the axial part 21 according to the thickness of the to-be-adhered member M1 and the sheet-like member M2. More specifically, in the portion where the member to be attached M1 or the member to be attached M1 and the sheet-like member M2 are overlapped, the disk-like member 22 is lifted higher according to the thickness of the portion where the material is thick. In other words, the height of the disk-shaped member 22 is lowered at a portion where the thickness is small. Accordingly, the plurality of disk-like members 22 press the sheet-like member M2 while changing the overall shape in a form following the shape of the irregularities on the surface of the tire material formed by the member to be stuck M1 and the sheet-like member M2. be able to.

  The outer diameter and inner diameter of the disk-shaped member 22 are not particularly limited as long as the disk-shaped member 22 can move in the radial direction with respect to the shaft portion 21. For example, the outer diameter is 50 to 300 mm and the inner diameter is 20 mm. It is preferably ~ 100 mm. In addition, the outer diameter of the shaft portion 21 inserted on the inner peripheral side of the disk-shaped member 22 can be appropriately changed according to the inner diameter dimension of the disk-shaped member 22, but is preferably 10 to 30 mm, for example. By setting the difference between the outer diameter dimension of the shaft portion 21 and the inner diameter dimension of the disk-shaped member 22 to, for example, 10 to 80 mm, the size of the unevenness on the surface of the tire material formed by the member to be bonded M1 and the sheet-shaped member M2 is increased. It is possible to cope with a case where the height is large. In the present embodiment, the inner peripheral side of the plurality of disk-shaped members 22 is formed hollow, and nothing is provided between the inner peripheral surface of the disk-shaped member 22 and the shaft portion 21. An elastic material may be provided between the member 22 and the shaft portion 21.

  The number of the plurality of disk-shaped members 22 can be appropriately changed according to the width of the member to be pasted M1 or the sheet-shaped member M2. For example, 20 to 100 disk-shaped members 22 are arranged in the axial direction of the shaft portion 21. It is provided side by side. The plurality of disk-like members 22 are pressed from both sides by restriction members 23 provided at both ends in the axial direction in order to restrict the movement of the plurality of disk-like members 22 along the axial direction to some extent. It is preferable to provide a clearance that allows the shaped member 22 to move about 3 to 5 mm in the width direction Y. By providing a clearance of 3 to 5 mm, it is possible to reduce friction between adjacent disk-shaped members 22 and prevent the disk-shaped members 22 from being damaged. Further, it is preferable to reduce the thickness of each disk-shaped member 22 in order to increase the degree of adhesion with the unevenness formed by the adherend member M1 and the sheet-like member M2. Although the thickness per sheet of the disk-shaped member 22 is not particularly limited, for example, the thickness of the disk-shaped member 22 can be increased to 1 to 10 mm, more preferably 2 to 5 mm.

  Each material of the disk-shaped member 22 is not particularly limited, but it is preferable to use the metal disk-shaped member 22 so as not to stick to the sheet-shaped member M2 which is a rubber material. In the case of the metal disk-like member 22, the sheet-like member M <b> 2 can be pressed by the weight of the disk-like member 22. When the disk-shaped member 22 is made of metal, plating is preferably performed to reduce friction with the adjacent disk-shaped member 22.

  The pressing member 3 is disposed substantially parallel to the shaft of the shaft portion 21 and is configured to contact the outer periphery of the plurality of disk-shaped members 22 and press the outer periphery of the disk-shaped member 22. As shown in FIG. 1, the pressing member 3 is configured such that the outer diameter of the portion corresponding to the central portion of the shaft portion 21 is large and the outer diameter decreases from the central portion toward the end portion. In the present embodiment, as shown in FIG. 1, the pressing member 3 is disposed on the downstream side in the movement direction X (rightward in FIG. 1) with respect to the roller 2, and out of the outer periphery of the disk-shaped member 22. The outer peripheral surface opposite to the disc-like member 22 in contact with the pressing member 3 with respect to the shaft portion 21 protrudes upstream in the movement direction X with respect to the shaft portion 21 (leftward in FIG. 1). .

  When the outer circumferences of the plurality of disk-shaped members 22 are pressed by the pressing member 3, the plurality of disk-shaped members 22 move corresponding to the shape of the pressing member 3. Of the pressing member 3, the disc-shaped member 22 is caused by a difference in the outer diameter of the pressing member 3 at a portion where the pressing member 3 contacts the disc-shaped member 22 at both ends in the axial direction and a portion where the pressing member 3 contacts the central disc-shaped member 22. The amount of protrusion to the upstream side in the moving direction X is determined. The difference between the outer diameter of the pressing member 3 at the position in contact with the disk-shaped members 22 at both ends in the axial direction and the outer diameter of the pressing member 3 in contact with the central disk-shaped member 22 is not particularly limited. Although it can change suitably according to the length of the axial direction of this, it can be 10-30 mm, for example. The material of the pressing member 3 is not particularly limited, but is preferably formed of a hard material such as a metal in order to prevent deformation and wear.

  Next, the operation and effect of the pressing device 1 will be described using an embodiment as an example.

  First, as shown in FIG. 1, a member to be attached M1 and a sheet-like member M2 are supplied onto a tire member support S (hereinafter referred to as a conveyor S) such as a conveyor (in this embodiment, a sheet-like member M2). Is supplied obliquely from above the conveyor surface), and when the lifting device L is driven, the holding device 1 waiting above the conveyor S is lowered toward the conveyor S.

  When the disk-like member 22 of the roller 2 comes into contact with the adherend member M1 and the sheet-like member M2 on the adherend member M1, as shown in FIG. 3, the disc-like member 22 becomes the adherend member M1 and the sheet-like member. The member M2 is lifted according to the height from the conveyor surface, and follows the shapes of the surfaces of the member to be pasted M1 and the sheet-like member M2. Further, the disk-like member 22 is pushed out by the pressing member 3 toward the upstream side in the moving direction X as shown in FIG. As a result, the outer circumferences of the plurality of disk-shaped members 22 correspond to the central portion of the shaft portion 21 in the width direction Y while being in close contact with the surfaces of the adherend member M1 and the sheet-shaped member M2 in the width direction Y. At the position, the disk-shaped member 22 has a convex shape toward the upstream side in the movement direction X (direction of the extruder). This state is schematically shown in FIGS. 5 (a) to 5 (c).

  FIG. 5A shows a state in which the air A has entered between the attachment surfaces of the member to be attached M1 and the sheet-like member M2. In FIG. 5A, the hatched area is a contact area C between the outer periphery of the disk-like member 22 and the adherend member M1 and the sheet-like member M2. In the contact region C, the sheet-like member M2 is pressed from above by the weight of the disk-like member 22, and the air A is prevented from entering. When the adherend member M1 and the sheet-like member M2 are moved on the conveyor S from the state of FIG. 5A, the air A collides with the contact area C as shown in FIG. Since the disk-shaped member 22 is arranged in a convex shape toward the upstream side in the movement direction X, the contact region C is formed in a step shape with the central portion in the width direction Y protruding most upstream. Since the contact areas C are arranged in steps as described above, when the air A collides with the contact area C, the air A is moved as shown in FIGS. 5B to 5C as the conveyor S moves. In addition, the step-like contact region C moves smoothly toward the outside in the width direction Y of the sheet-like member M2 so as to go down the stairs. Thereby, the air A that has entered between the adherend member M1 and the sheet-like member M2 is reliably discharged outward from the side edge portion of the sheet-like member M2, as shown in FIG. The occurrence of air accumulation is suppressed. Therefore, it is possible to reduce tire defects caused by air accumulation. The illustrated embodiment is merely an example, and even when a plurality of sheet-like members are attached to a plurality of layers or when different attachment methods are used, air can be discharged according to the above principle. The same effect can be obtained.

  In this embodiment, a plurality of disk-like members 22 having substantially the same diameter are provided, and the disk-like member 22 moves toward the upstream side in the vertical direction and the moving direction X with respect to the tire member support S such as a conveyor. . Since the disk-like members 22 having substantially the same diameter each apply a load to the sheet-like member M2 with the same weight, the pressing force is applied in the contact area with each disk-like member 22 in the width direction of the sheet-like member M2. Become even. Therefore, a part of the sheet-like member M2 in the width direction Y gives an excessively strong pressing force, and a part of the pressing force is insufficient. Therefore, the air A is easily guided to the outside of the sheet-like member M2, and the sheet-like member M2 is hardly damaged. Furthermore, it is easy to cope with a change in surface irregularities according to the thickness of the member to be attached M1 and the sheet-like member M2 to be used and how to attach them.

  The present invention will be specifically described based on Examples and Comparative Examples, but the present invention is not limited to these.

  Except for the shape of the pressing member, the examples and comparative examples 1 and 2 both use the same pressing device, and as the pressing member, the example has a large outer diameter at the central portion shown in FIG. A spindle-shaped member whose outer diameter becomes smaller toward the outside is used. Comparative Example 1 has a cylindrical holding member, Comparative Example 2 has a smaller outer diameter at the central portion, and the central portion whose outer diameter increases toward the end is concave. The holding member was used.

  For each of Examples and Comparative Examples 1 and 2, the bead apex is extruded from an extruder, and a heat-resistant rubber sheet member is attached to the bead apex using a pressing device, and then the bead and the bead apex are assembled. Thus, an intermediate material was produced. Thereafter, a raw tire was produced under the same conditions and vulcanized with a vulcanizer to obtain a tire. With respect to each of the examples and comparative examples 1 and 2 under the above-mentioned conditions, it is visually determined whether air remains for the intermediate material for 2100 tires and the tire obtained from the intermediate material. Each of the numbers judged to be was calculated. The results are shown in Table 1.

  As shown in Table 1, in the examples, the intermediate material had the fewest remaining air defects, and the vulcanized tire had the fewest defects. This is considered to indicate that the air is more smoothly discharged to the outside by the spindle-type pressing member. On the other hand, Comparative Example 1 using a horizontal pressing member has more defects in both the intermediate material and the vulcanized tire than the Example, and Comparative Example 2 using a recessed pressing member has the most defects. It was. In Comparative Example 1, since the contact area between the air, the pressing member, and the rubber sheet is formed horizontally, the pressing device is difficult to be discharged to the outside and remains between the rubber sheet and the bead apex. This is considered to be because of passing. Furthermore, in the comparative example 2, since the contact area of the pressing member and the rubber sheet is formed in a concave shape, it is considered that air is guided to the recessed portion and passes through the pressing device without coming out. From the above, it has been found that by using the pressing member of the spindle type embodiment, air remaining can be suppressed between the adherend member and the sheet-like member, and tire defects can be reduced.

DESCRIPTION OF SYMBOLS 1 Pressing device 2 Roller 21 Shaft part 22 Disc-shaped member 23 Control member 3 Pressing member 41 Roller support part 42 Pressing member support part A Air C Contact area D Tire manufacturing apparatus L Lifting apparatus L1 Base L2 Cylinder L3 Cylinder rod M1 Sticking Member M2 Sheet-like member S Tire member support (conveyor)
X Movement direction Y Width direction

Claims (6)

A pressing device for sticking a sheet-like member for sticking a sheet-like member on a member to be stuck on a tire member support,
The holding device is
A roller provided with a shaft portion having both ends pivotally supported, a plurality of disc-shaped members formed in an annular shape and through which the shaft portion is inserted, and disposed substantially parallel to the shaft of the shaft portion, A pressing member that contacts the outer periphery of the disk-shaped member and presses the outer periphery of the disk-shaped member;
The plurality of disk-shaped members have an inner diameter that is movable in the radial direction of the shaft portion with respect to the shaft portion,
The pressing member is configured such that the outer diameter of the portion corresponding to the central portion of the shaft portion is large, and the outer diameter decreases from the central portion toward the end portion,
When the outer periphery of the plurality of disk-shaped members is pressed by the pressing member,
The plurality of disk-shaped members move according to the shape of the pressing member, and are configured to move according to the height of the member to be pasted and the sheet-shaped member from above the tire member support. Holding device. The adherend member and the sheet-like member are moved on the tire member support, and the shaft portion of the roller is disposed substantially perpendicular to the moving direction of the adherend member and the sheet-like member. ,
The pressing member is disposed on the downstream side in the moving direction with respect to the roller, and when the plurality of disk-shaped members are pressed by the pressing member, the plurality of disks are moved with respect to the shaft portion. The pressing device according to claim 1, wherein the pressing device projects toward the upstream side in the moving direction. The pressing device according to claim 1, wherein the plurality of disk-shaped members have substantially the same diameter. The pressing device according to any one of claims 1 to 3, wherein the plurality of disk-shaped members move with respect to the shaft portion according to the thicknesses of the member to be bonded and the sheet-shaped member. The pressing device according to any one of claims 1 to 4, wherein the pressing device includes an elevating device that moves the roller and the pressing member to and from the tire member support. The tire manufacturing apparatus provided with the pressing device of any one of Claims 1-5.

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