JPH0414439A - Bead setter - Google Patents

Abstract

PURPOSE:To enable a bead to be retained properly and prevent a tire component from becoming off-centered, by composing a bead-retaining ring of a plurality of segments disposed along the circumferential direction so as to be minutely movable in radial directions, and connecting a reciprocating mechanism to each of the segments. CONSTITUTION:A pair of bead-retaining parts 99 and 100 disposed on opposite sides (with respect to an axial direction) of a centrally located main drum 4 each comprise a bead-receiving ring 36, 45 having a cylindrical part 36a, 45a for externally fitting a bead 13, 13 thereon and a bead-retaining ring 8, 9 having a magnet 12, 41 for attracting a bead core 13a, 13a of the bead 13, 13 thereto. The bead-retaining rings 8, 9 each comprise a plurality of segments 95, 112... disposed along the circumferential direction so as to be minutely movable in radial directions, and a resilient member 102 is provided for elastic ally pressing each of the segments 95, 112... radially inward. Rollers 109... capable of rolling on a tire component are disposed on inner surfaces 111, 113... of the segments 95, 112.... Each of the segments 95, 112... is connected with a reciprocating mechanism 115 for minutely driving each of the segments 95, 112... in the radial directions.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a bead setting device.

[Problems to be solved by conventional techniques and inventions] Generally,
When molding a tire, the beads must be conveyed from the left and right to the main drum, and for this reason bead holding sections are provided on both sides in the axial direction with the central main drum in between.

Conventionally, the bead holding section has been provided with a holding ring having a magnet to which the bead core of the bead is attracted. Therefore, when the ring escapes from the main drum after the bead has been conveyed and installed, there is a risk that the tire constituent material may be caught and damaged, or the material may become off-center. In addition, if you try to lock the bead while it is held by the bead retaining ring, if the diameter of the bead corresponding part expands, the diameter of the bead retaining ring remains unchanged, so the ring will get in the way. There was a risk that the bead would shift from its normal position or that it would not be possible to lock it.

Therefore, the present invention provides a bead setting device that can hold the beads properly, not damage the tire constituent materials, and prevent the tire constituent materials from becoming off-center. purpose.

[Means to solve the problem]

In order to achieve the above-mentioned object, the bead setting device according to the present invention is a bead setting device in which bead holding parts are arranged on both sides in the axial direction with a central main drum in between;
The pair of bead holding parts are each formed of a bead receiving ring in which the bead is fitted onto the cylindrical part, and a bead holding ring in which the bead core of the beet is attracted to the magnetic throat, and the bead holding ring is formed of a plurality of segments disposed along the circumferential direction so as to be able to move slightly in the radial direction, and is provided with an elastic member that elastically urges each segment in the inner radial direction, and a tire is attached to the inner surface of each segment. It is equipped with rollers that can roll on the constituent materials. Further, another bead setting device according to the present invention includes a pair of bead holding parts, a bead receiving ring in which a bead is fitted onto a cylindrical part, and a bead holding ring in which a bead core is attracted to a magnet. The bead retaining ring is formed from a plurality of segments disposed along the circumferential direction so as to be capable of fine movement in the radial direction, and each segment is finely moved in the radial direction. In addition, a reciprocating mechanism is attached to the inner surface of each segment to allow rolling on the tire constituent material.

[For production]

In the above-mentioned bead setting device -, each segment of the bead retaining ring can escape in the outer diameter direction, and when bead locking, the bead corresponding part of the main drum is moved while the bead is retained by the bead retaining ring. The diameter can be expanded and the bead can be reliably locked. Also,
When the co-bead retaining ring is released after locking, each segment of the bead retaining ring causes the rollers to roll over the tire construction material and the tire construction material does not get caught.

In addition, in the other bead setting device described above, when expanding the diameter of the bead corresponding portion of the main drum, each segment can be moved in the outer radial direction by the reciprocating mechanism in response to the diameter expansion, As a result, the bead locking operation can be performed while the bead is held by the bead holding ring, similar to the above-mentioned device (-). Moreover, as in the above-mentioned apparatus (-), when the bead retaining ring is released, each segment of the bead retaining ring is caused by a roller rolling on the tire constituent material, so that the tire constituent material is not caught.

[Example] Hereinafter, the present invention will be explained in detail based on drawings showing examples.

3 and 4 show a tire molding device using a bead set device according to the present invention, and this tire molding device consists of a base 1 for the entire device, a gear box 2 mounted on the base 1. 3 (each GABO NOX 2.3 is equipped with a drive mechanism), a main drum 4 protruding from the gear box 2, a belt drum 5 protruding from the gear box 3, and a base. 1 and a belt carrier 7 that reciprocates in the axial direction via a guide mechanism 6, and the like, and bead holding parts 99 and 100 are disposed on both sides in the axial direction with the main drum 4 in the center therebetween.

Therefore, one bead holding portion 99 is connected to the main drum 4 from the main drum mounting base A (that is, the gear box 2).
The other bead holding portion 10 is provided to protrude toward the side along the axial direction.
0 is the belt drum mounting base B (that is, gear box 3
) protrudes along the axial direction toward the main drum 4 side.

Here, one of the bead holding parts 99 consists of a bead holding ring 8 and a bead receiving ring 36, as shown in FIG. 1, and the bead holding ring 8 is arranged along the circumferential direction as shown in FIG. It consists of a plurality of segments 95... arranged in the same direction.

That is, as shown in FIGS. 5, 6, and 7, the segment 95 includes a first arc-shaped flat body 95a to which the magnet H2 is attached to the distal end surface, and a first flat body 95a fixed to the flat body 95a. The bead core 13a of the bead 13 is attracted to the magnet 12, as shown in FIG. be done. Note that the bead refers to the bead core 13.
a and a bead apex 13b attached thereto.

This bead retaining ring 8 is capable of reciprocating in the axial direction by a reciprocating mechanism 14 shown in FIG. That is,
The reciprocating mechanism 14 includes a screw shaft 15 inserted into the gear box 2, a nut member 16 screwed onto the screw shaft 15, a holding plate 17 holding the nut member 16, and a holding plate 17.
and a guide rod 18 that connects the bead retaining ring 8 to the nut member 1 by rotation around the axis of the screw shaft 15'.
6 reciprocates in the axial direction, the retaining plate 17 reciprocates in the axial direction, and the bead retaining ring 8 reciprocates.

Specifically, a tip fixing member 19 is provided on the tip wall of the box 2, and the tip fixing member 19 rotatably holds the tip 20 of the screw shaft 15 via a pivot 21. 22 rotatably holds the base end 23 of the screw shaft 15 via a pivot 24. Here, the pivot portion 21 includes bearings 21a and 21b that rotatably hold the tip portion 20.
, a frame 21c surrounding the bearing 21a, and a screw shaft 1.
The pivot portion 24 includes a bearing 24a that rotatably holds the small diameter portion 23a of the base end 23.
and a cylindrical body 24 that holds the cough bearing 24a on the rear end wall 22.
It is equipped with b.

A pulley 26 is externally fitted onto the protrusion 25 of the small diameter portion 23a of the base end 23 of the screw shaft 15, and as shown in FIG. The heald 28 is hung on the fitted pulley 27,
The screw shaft 15 is rotated by the drive of the motor. Note that, as shown in FIGS. 8 and 9, two screw shafts 15 are arranged at symmetrical positions with respect to the axial center, and are arranged parallel to the drum axial center.

Further, as shown in FIGS. 1 and 8, the holding plate 17 is provided with a large through hole 29a, and small through holes 29b are provided at the upper, lower, left, and right ends, respectively, and the base end of the guide rod 18 is provided with a large through hole 29a. 18a is inserted and fixed into this small through hole 29b.

Here, the guide rod 18 has a ring-shaped connecting part 31 connected to its tip, and a holding part 32 provided on the fixing member 19.
A guide rod 18 is slidably inserted in the axial direction. That is, the holding part 32 includes a cylinder 32a fixed to the fixing member 19, and a bearing 3 installed inside the cylinder 32a.
2b, and the guide rod 18 is disposed parallel to the axis of the main drum and in parallel to the axis of the screw shaft 15. 39a is a nut member for attaching the guide rod 18 to the holding plate 17, and 39b is a NAND member for attaching the guide to the connecting portion 31.

The connecting portion 31 and the bead retaining ring 8 are connected via an intervening member 96.

Therefore, the above-mentioned motor (not shown) drives the screw shaft 15.
When rotates, the holding plate 17 reciprocates in the axial direction via the nut member 16, and the bead holding ring 8 moves against the guide rod 18...
It reciprocates in the axial direction while being guided by.

During this reciprocating movement, the various members 33, 34, 35, etc. for driving the main drum pass through the large through hole 29a of the holding plate 17, and do not interfere with the reciprocating movement of the holding Fi 17. , 4a is a main drum screw shaft, and in FIG. 9, 80 is an insertion hole into which the screw shaft 4a is inserted.

As shown in FIG. 7, a dovetail groove 97 is formed in the interposed member 9G, and the second flat plate-shaped body 95b is fitted into this dovetail groove 97 so as to be able to move slightly in the radial direction. Further, as shown in FIG. 5, the outer surface 105 of the second flat plate-like body 95b
A notch 98 is provided in the notch 98, a blind hole 101 is provided in the notch 98, and a resilient member 10 is inserted into the hole 101.
2 has been inserted. The outer end side of the dovetail groove portion 97 of the intervening member 9G is covered by a cover portion 103, and one end surface 102a of the resilient member 102 is in contact with the inside of the dovetail groove portion 97 near the cover portion 103. The contact member 4 is fixed via a fixing device such as a bolt. Note that the interposed member 96 is fixed to the connecting portion 31 connected to the guide rod 18 using a fixing device such as a bolt (not shown).

The first and second flat plate bodies 95a and 95bL are provided with through holes 106a and 106b, as shown in FIG.
A guide pin 107 that protrudes from is inserted. That is,
The through hole 106a is an elliptical hole, and the through hole 106b has a larger diameter on the inside, and the head 107a of the guide pin 107 is engaged with the outer peripheral edge of the small diameter portion, and the segment 95 is connected to the intervening member 96.
The segments 95 are connected to each other and each segment 95 is allowed to move slightly in the radial direction. In the outer radial direction, the outer surface 10 of the second flat plate-like body 95a
5 (see No. 5) can be moved until it abuts on the cover part 103 of the intervening member 96, and in the inner radial direction until the guide pin 107 abuts on the outer edge of the through hole 106b. can do. Note that normally, the resilient member 102
As a result, each segment 95... is pressed in the inner radial direction, and is in the state shown in FIGS. 5 and 6.

Also, a roller 109 is provided on the inner surface 111 of each segment 1-95.
is rotatably attached. That is, the roller 109 is
A shaft portion 109a and a cylindrical portion 10 fitted onto the shaft portion 109a.
9b, and the cough shaft portion 109a is the first flat plate-like body 95a.
The cylindrical portion 109b is attached to the first flat body 95.
It is fitted internally into a recess 110 provided on the inner surface of a. Also, the first and second flat plate bodies 95a.

The inner surface of the roller 95b is a continuous surface, and the outer peripheral surface of the cylindrical portion 109b of the roller 109 slightly protrudes radially inward from the inner surface 111.

The fixing member I9 also includes a cylindrical portion 36al and an outer flange portion 3.
6b is fixed, the bead 13 is fitted onto the cylindrical portion 36a, and the bead 13 is received by the cylindrical portion 36a.

Next, as shown in FIG.
and a bead receiving ring 45, and the bead retaining ring 9 consists of a plurality of segments 1-112 disposed along the circumferential direction as shown in FIG.

That is, as shown in FIGS. 10 and 11, the segment 12 has a magnet 4 on its tip surface, similar to the segment 95 described above.
1 is attached, a second flat plate body 112b fixed to the flat plate body 112a,
Since it is bilaterally symmetrical to the above-mentioned segment 1-95, its explanation will be omitted. Moreover, in this case, the intervening member 9
6 is a cylindrical body 43 provided with a rear end wall 42, as shown in FIG.
The rear end wall 42 of this cylindrical body 43 is fixed to a shaft member 44 that reciprocates in the axial direction.

Therefore, the above-mentioned bead receiving ring 45 is attached to the cylindrical body 43.
is attached, and the bead receiving ring 45 is attached to the cylindrical body 4.
A substrate 47 is connected to the shaft 46, and the substrate 4
7 is elastically biased by an elastic member 48 in the direction of the arrow, that is, toward the heald drum 5 side.

That is, the bead receiving ring 45 has a substantially 11-shaped cross section and is composed of a cylindrical portion 45a and an outer flange portion 45b.A ring body 49 is attached to the outer flange portion 45b. This outer flange portion 45b is attached to the shaft 46 by screwing a nut member 53 onto the threaded end portion of the shaft 4G passing through the shaft 4G. Further, a guide body 50 for the support shaft 46 is fixed to the inner circumferential surface of the cylindrical body 43, and this guide body 50
A shaft 46 is slidably inserted through the shaft 46. The shaft 46 passes through the through hole 54 of the substrate 47.
Attach a nut member 56 to the threaded end of the shaft 4G.
and the substrate 47 are connected. Also, this shaft 46
are arranged in three pieces at a pitch of 120° along the circumferential direction,
In between, three spring member holding rods 57 are arranged.

Here, the holding rod 57 means that its end portion extends through the hole 7L of the substrate 47.
5B, and a NAND member 60 is inserted into the protruding screw part.
are screwed together and fixed to the substrate 47, and are inserted into through holes 62 of protruding pieces 61 provided inwardly protruding from the inner circumferential surface of the cylindrical body 43. Then, a resilient member 48 made of a compression coil spring is fitted onto the holding rod 57, and the base plate 47 and the protruding piece 6 are connected to each other.
1.

The substrate 47 also includes a through hole 6 in the rear end wall 42 of the cylindrical body 43.
A hit rod 64 is attached which is inserted into the hole 3. That is, the end of the abutting rod 64 is inserted into the through hole 65 of the base plate 47, and the nut member 67 is screwed onto the protruding threaded portion of the end, and the abutting rod 64 is inserted into the through hole 65 of the base plate 47.
4 is attached to the board 47.

As shown in FIG. 12, the base of the shaft member 44 reaches the gear box 3, and an axially uneven strip 68 is provided on its outer peripheral surface. This shaft member 44 is capable of reciprocating in its axial direction by a reciprocating mechanism 69.

Here, as shown in FIG. 12, the reciprocating mechanism 69 includes screw rods 70.70 disposed inside the gear box 3, and nut members 71.71 screwed into the screw rods 70.70, respectively. and the shaft member 44 while connecting the nut members 71 and 71.
and a connecting body 72 connected to the shaft member 44. Rotation of the threaded rod 7070 about its axis causes the nut member 71.71 to reciprocate along the shaft center of the threaded rod 70.70. It reciprocates in the axial direction.

That is, inside the gear box 3 there is a tip wall 73a and a side wall 73b.
, 73c, and retaining walls 73d, 73e protruding inward from the side walls 73b, 73c,
Pivot parts 74 a , 74 a , 74 b , 74 b are provided on the tip wall 73 a and the retaining walls 73 d and 73 e, respectively.
The threaded rod 70 is rotatably but immovably supported in the axial direction by the pivot parts 74a and 74b. A pulley 75.75 is attached to the end of the screw rod protruding from the retaining walls 73e and 73d, and a belt is attached to the pulley 75.75 and a pulley attached to the output shaft of a drive motor (not shown). is multiplied and the motor is driven,
Each threaded rod 70.70 rotates about its axis. Also,
As shown in FIG. 2, the tip small diameter portion 44a of the shaft member 44 is inserted into the through hole 76 of the rear end wall 42 of the cylindrical body 43, and the nut member 78 is screwed into the protruding threaded portion 77. While connecting the member 44 and the cylindrical body 43, the base end small diameter portion 44b of the shaft member 44 is inserted into the through hole 79 of the connecting body 72, and the nut member 82 is screwed into the protruding threaded portion 81,
The shaft member 44 and the connecting body 72 are connected. Note that a key 84a is provided protruding from the inner peripheral surface of the through hole 76 of the rear end wall 42.
A key groove 85 is provided on the outer peripheral surface of the small diameter portion 44a at the tip end of the shaft member 44.
a is formed.

Therefore, when the motor is driven and the threaded rod 70.70 rotates around its axis, the connecting body 7 is rotated through the nut member 71.71.
2 reciprocates in the axial direction, and the shaft member 44 reciprocates in the axial direction.

In addition, an outer cylindrical body 86 is located near the small diameter portion 44a at the tip end of the shaft member 44.
The abutment surface 64a of the abutment rod 64 abuts against the distal end surface 86a of the outer cylindrical body 86. 87 is a pulley for the heald drum 5.

As shown in FIG. 3, the guide mechanism 6 consists of a guide rail 88 disposed on a base l, a linear guide 89 running on the guide rail 88, etc.
A stitcher 91 is provided below the main drum 4 and is provided on a lower base 90 that runs on a guide rail 88 on the base.

Next, using the apparatus configured as described above, the bead 13 is
．． The work to set 13 will be explained.

First, as shown in FIG. 1, one bead holding ring 8 is retracted from the bead receiving ring 36, one bead 13 is fitted onto the bead receiving ring 36, and one bead is attached to the magnet 12. 13 bead cores 13a
is adsorbed, one bead 13 is held in this bead holding ring 8, and the other bead holding ring 9 is retracted from the bead receiving ring 45 (in this case) as shown in FIG. 2 (1). , the contact surface 64a of the contact rod 64 is in contact with the distal end surface 86a of the outer cylindrical body 86, and the shaft member 44 is in a retracted state as shown by the solid line in FIG. is the position shown by the solid line.),
The other bead 13 is fitted onto the bead receiving ring 45, and the bead core 1 of the other bead 13 is placed on the magnet 41.
3a is adsorbed, and the other bead 13 is held by this bead holding ring 8.

Next, the double-column reciprocating IIl ellipses 14 and 69 are driven to transport the tire constituent materials 94 to the main drum 4, respectively, as shown in FIG. 13 (1).

In this case, one bead retaining ring 8 is pushed out by the guide rod 18 as shown by the imaginary line in FIG. 1, but in the case of the other bead retaining ring 9, the state shown in FIG. When the substrate Fi 47 moves forward in the direction of the arrow in FIG.
The bead receiving ring 45 connected to the support shaft 46 remains in that position, and only the cylindrical body 43 and the bead holding ring 9 move forward, as shown in FIG. 2 (II). The retaining ring 9 is in a state protruding from the bead receiving ring 45. From this state, the shaft member 44
When the contact surface 64a of the contact rod 64 is moved forward, the contact surface 64a of the contact rod 64 is moved forward.
After that, the bead retaining ring 9 and bead receiving ring 45 are transported to the main drum 4 as shown in FIG. 13 (■) while maintaining the state shown in FIG. 2 (n). The beads 13.13 are attached to the ends of the carcass 94, which is attached to the main drum 4. In this case, each segment 9 constituting the bead retaining ring 8.9
5, 112... can be slightly moved in the radial direction, so when the diameter of the bead corresponding portion is expanded while the beads 13, 13 are held by the rings 8, 9, the bead retaining rings 8, 112... can be moved slightly in the radial direction.
9 can effectively escape from its diameter expansion, and beads 13, 13 can be installed without shifting from their normal positions.

Wear.

Then, the bead retaining ring 89 is separated from this state, but in this case, since the inner surface 111.113 of each segment 95.112 of each bead retaining ring 8.9 and the roller 209.109 are attached, the corresponding roller 109
．． 109 rolls on the tire constituent material 94, each bead retaining ring 8.9 escapes, and the tire constituent material 94 is not damaged or displaced.

After that, as shown in FIG. 13 (III), fluid such as air is injected into the hoisting bladders 92, 92 to hoist both ends of the carcass around the bead 13.13.Next, the hoisting plug - The fluid in 92 and 92 is drained, and a pair of sidewalls 93 and 93 are attached so as to cover the upper part of the carcass. Then, the bead-corresponding portion of the main drum 4 is expanded in diameter, and in this state, the tire constituent material 94 ("-scrap) is expanded into a toroidal shape.

The belt formed on the drum 5 is transferred to the belt carrier 7.
It is conveyed to the main drum 4 and integrated with the heald toroidal carcass.

Next, FIG. 14 shows another embodiment of one of the bead holding parts 99, in which each segment 95 is provided with a reciprocating mechanism 115 that finely moves each segment 95 in the radial direction. There is. That is, the reciprocating mechanism 115 moves the cylinder 1
16, whose cylinder body 116a is the intervening member 9.
6, and the tip of the piston rod 116b is fixed to the segment 95.

Furthermore, a protrusion 119.1 is provided on the proximal end surface of the segment 95.
19 is provided, and the protrusions 119, 119 are connected to the intervening member 9.
It is slidably fitted into a radial groove 120 formed in the guide groove portion 118 of No.6.

Therefore, when the piston rod 116b of the cylinder 116 is extended as shown in FIG. 14(1), each segment 95 is in a reduced diameter state, and as shown in FIG. Also, the piston rod 116b of cylinder +16 is in the state shown in FIG.
As shown in I), in the contracted state, each segment 95...
is in an expanded state.

Moreover, FIG. 15 shows another embodiment of the other bead holding part 100, and in this case, similarly to the holding part 99 shown in FIG. 5, and the 14th
Since it is similar to the bead holding section 99 shown in the figure, its explanation will be omitted.

Therefore, the bead holding portion 99 shown in FIGS. 14 and 15
, 100, when expanding the diameter of the bead corresponding part, each bead retaining ring 8.9 can be slightly moved in the outer diameter direction in accordance with the diameter expansion, as shown in FIGS. 1 and 2. As shown in the figure, the same effect as that provided with the resilient member 102 can be achieved.

Note that the present invention is free to change the design without departing from the gist of the present invention, which is limited to the above-described embodiments. For example, the reciprocating mechanism 115 may include a bolt member, a nut member screwed into the bolt member, and the like. The bolt member or the nut member may be provided with a drive member that rotates the bolt member or the nut member about its axis.

〔Effect of the invention〕

Since the present invention is configured as described above, it produces the effects described below.

At the time of bead lock, the diameter of the bead corresponding portion of the main drum 4 can be expanded while the bead 13.13 is held by the bead retaining ring 8°9, so that the bead 13.
13 can be reliably held without shifting from the normal position, and when each bead retaining ring 8.9 escapes, the rollers 109... of each segment 95° 112... roll on the tire constituent material 94. However, the tire constituent material 94 will not be damaged or the tire constituent material 94 will not become off-center.

[Brief explanation of drawings]

Fig. 1 is an enlarged sectional view of one embodiment of one bead holding part of the bead setting device according to the present invention, Fig. 2 is an enlarged sectional view of one embodiment of the other bead holding part, and Fig. 3 is a tire forming A front view of the entire device, FIG. 4 is a plan view, FIG. 5 is an enlarged sectional view of the main part of one bead holding part, FIG. 6 is an enlarged side view of the main part, and FIG. 7 is a bottom view of the main part. , FIG. 8 is a sectional view taken along the line ■-■ in FIG. 1, FIG. 9 is a sectional view taken along the line IX-IX in FIG.
The figure is an enlarged sectional view of the main part of the other bead holding part, Fig. 11 is an enlarged side view of the main part, Fig. 12 is an enlarged plan view of the reciprocating mechanism for the other bead holding part, and Fig. 13 is the bead attachment. An explanatory diagram of the method, FIG. 14 is an enlarged sectional view of a main part of another embodiment of one bead holding part, and FIG. 15 is an enlarged sectional view of a main part of another embodiment of the other bead holding part. 4... Main drum, 8, 9... Bead retaining ring, 12,
41...Magnet, 13...Bead, 36.45...Bead receiving ring, 36a, 45a-cylindrical portion, 95.
112...Segment, 99.100...Bead holding part, 1
02... Resilient member, 109... Roller, 111.113... Inner surface, 115... Reciprocating mechanism. ...Reciprocating mechanism. Patent applicant: Sumitomo Rubber Industries, Ltd. Figure Figure B Figure 10 1] 3 12b Figure 11 Figure 14 Figure 13 Figure 15

Claims (1)

[Scope of Claims] 1. In a bead setting device in which bead holding parts 99 and 100 are arranged on both sides in the axial direction with the central main drum 4 in between, the pair of bead holding parts 99 and 100 are arranged such that Bead receiving rings 36, 45 in which the beads 13, 13 are fitted onto the cylindrical portions 36a, 45a; bead retaining rings 8, 9 in which the bead cores 13a, 13a of the beads 13, 13 are attracted to the magnets 12, 41; Along with forming from
The bead retaining rings 8, 9 are arranged in a plurality of segments 95, 11 arranged along the circumferential direction so as to be able to move slightly in the radial direction.
2... and elastically biases each segment 95, 112... in the inner radial direction, and the inner surface 111, 113... of each segment 95, 112...
The roller 109 is capable of rolling on the tire constituent material.
A bead setting device characterized by being attached with... 2. In a bead setting device in which bead holding parts 99 and 100 are arranged on both sides in the axial direction with the central main drum 4 in between, the pair of bead holding parts 99 and 100 are arranged in cylindrical parts 36a and 45a, respectively. bead receiving rings 36, 45 into which the beads 13, 13 are externally fitted, and bead retaining rings 8, 9 into which the bead cores 13a, 13a of the beads 13, 13 are attracted to the magnets 12, 41;
The bead retaining rings 8, 9 are arranged in a plurality of segments 95, 11 arranged along the circumferential direction so as to be able to move slightly in the radial direction.
2..., and each segment 95, 112... is connected with a reciprocating mechanism 115 that finely moves each segment 95, 112... in the radial direction.
A bead setting device characterized in that rollers 109, which are capable of rolling on tire constituent materials, are attached to the inner surfaces 111, 113, of the tires 5, 112, .