JP2000233455A - Two-position tire automatic molding machine and tire molding method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a two-position tire automatic molding machine and a tire molding method capable of shortening a molding cycle time to enhance productivity. SOLUTION: A two-position tire automatic molding machine is equipped with a molding machine main body part 1, a bead supply part 2 supplying a bead to the molding machine main body part 1, an inner liner/ply servicer and an intermediate molded product taking-out part 5. The molding machine main body part 1 is equipped with a pair of left and right bead setters 6, 6 one of which is provided so as to be movable left and right and the other one of which is provided in a fixed state, the former 9 connected to the movable bead setter 6 through a connection shaft 7, a pair of left and right bladders 8, 8 provided on both left and right sides of the former 9, a band drum 10 and a band transfer 11 and the bead supply part 2 is provided with a bead holding part 31 having a pair of arcuate chuck pawls 34, 34 for holding beads.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an automatic tire molding machine and a tire molding method.

[0002]

2. Description of the Related Art As shown in FIG. 13, a conventional automatic molding machine for a two-position tire has a molding machine body a, a bead supply section having a pair of left and right annular bead holders f, f, a molding machine body. An inner liner servicer and a price servicer (not shown) provided behind the portion a, and an intermediate molded product removal portion g are provided, and one of the molding machine main portions a is provided so as to be movable in the front-rear and left-right directions. A pair of left and right bead setters b, b each having the other fixedly provided, a former e connected to the fixed bead setter b via a connection shaft c, and a pair of left and right provided on both left and right sides of the former e Bladders d, d, a band drum h provided movably in the left-right direction, and a band provided movably in the left-right direction and for sending a cylindrical work from the band drum h to the former e. And lance fur i, was to include a.

As shown in FIGS. 13 and 14, the tire forming method using the two-position automatic tire forming machine firstly moves the left and right bead holding portions f, f toward the forming machine main body portion a to move the left and right beads. A bead supply step of delivering beads (not shown) to the setters b, b is performed, and the band drum h
, An inner liner / ply attaching step is performed in parallel. The arrow j indicates an inner liner / ply attaching step.

[0004] Thereafter, as shown in FIGS. 13, 15 and 16,
The left and right bead holders f, f move back and forth on the same path to return to the original standby position, and the movable bead setter b moves rearward. Further, the band drum h moves and is inserted into the hole of the band transfer i, and the cylindrical work (not shown) formed by the band drum h is sent to the band transfer i. Then, the band drum h moves back to the original position, and the band transfer i moves to send the cylindrical work to the former e.

Then, as shown in FIGS. 13, 17 and 18,
The band transfer i moves backward to the band tram h side, and the movable bead setter b moves forward and rightward, and the bead setters b, b on the left and right sides form the e bead setter b.
The bead is sent, and a bead set / turn-up process is performed.

Then, as shown in FIGS. 13, 19 and 20,
With the movable side bead setter b retreating to the left,
The intermediate molded product take-out section g moves to take out an intermediate molded product (not shown) molded by the former e. The above is one cycle of the molding operation by the conventional two-position tire automatic molding machine.

[0007]

However, in this conventional automatic molding machine for two-position tires, the right and left bead holding portions f, f after the bead supply move backward in the same path and retreat. The bead holder f corresponding to the bead setter b on the fixed side to which the former e is connected requires a long time to retreat from the molding machine main body a over a long path, so that the next process is not immediately performed and time loss occurs. Had occurred. Also, band transfer i to former e
After the cylindrical work is delivered to the movable bead setter b on the movable side, the band transfer i waits for the same path to move in the reverse direction, and the bead set / turn-up process is performed. There was a time loss. Therefore, although the speed of each process is increased in order to increase the molding speed, the speed of the machine operation is limited, and it is difficult to increase the productivity.

Accordingly, an object of the present invention is to provide a two-position tire automatic molding machine and a tire molding method that can shorten the molding cycle time and increase productivity.

[0009]

In order to achieve the above-mentioned object, an automatic two-position tire molding machine according to the present invention is provided.
A molding machine main body, a bead supply section for supplying beads to the molding machine main body, an inner liner / price servicer, and an intermediate molded product take-out section, and one of the molding machine main bodies is in the left-right direction. A pair of left and right bead setters movably provided and the other fixedly provided, a former connected to the movable bead setter via a connection shaft, and a pair of left and right provided on both left and right sides of the former A two-position automatic tire molding machine, comprising: a bladder, a band drum movably provided in the left-right direction, and a band transfer for sending a cylindrical work from the band drum to the former. Part comprises a bead holding part having a pair of arcuate chuck claws for holding the bead, and the band transfer further comprises a cylindrical body A work holding portion composed of a plurality of curved plates divided in the left-right axis direction, and a connection driving portion for connecting the plurality of curved plates to a cylindrical shape so as to swing and open and close; The bead holding portion and the work holding portion, which are moved on the former axis between the formers and are arranged side by side, are moved so that the former skewers, and a cylindrical work is supplied to the former. Things.

In addition, a band drum is arranged in series with respect to the axis of the former, and a work holding portion of the band transfer holding a cylindrical work from the band drum moves over a fixed bead setter. It is configured to move from above between the bead setter and the former.

Further, a band drum is disposed in parallel at a front position or a rear position with respect to the former axis, and a work holding portion of the band transfer holding a cylindrical work from the band drum is provided on a fixed side. It is configured to move between the bead setter and the former from the front and back.

In addition, a band drum is arranged in parallel above the former axis, and a work holding portion of the band transfer holding a cylindrical work from the band drum is connected to a fixed side bead setter. It is configured to move from above between formers.

The tire molding method according to the present invention comprises a molding machine main body, a bead supply section for supplying a bead to the molding machine main body, an inner liner / price servicer,
An intermediate molded product take-out section, and the molding machine main body section includes a pair of left and right bead setters, one of which is provided movably in the left-right direction and the other is fixedly provided, and a movable side via a connection shaft. A former connected to the bead setter, a pair of left and right bladders provided on both left and right sides of the former, a band drum movably provided in the left and right direction, and a cylindrical work from the band drum. And a band transfer to be sent to
A tire molding method using a position tire automatic molding machine, wherein a work holding portion of the band transfer holding a cylindrical work in a gap between the bead setter on the fixed side and the former moves, and the gap The pair of left and right bead holders of the bead supply unit holding the bead are moved, and thereafter, the former is moved so as to skew the one bead holder and the work holder arranged side by side on the former axis. After the cylindrical workpiece is supplied to the former and the beads are supplied to the movable side and fixed side bead setters, one and the other bead holding portions are arranged so as to avoid the movable side and fixed side bead setters. And the work holding section is retracted.

Further, the bead supply unit includes a bead holding unit having a pair of arc-shaped chuck claws for holding the bead, and the band transfer includes a plurality of curved plates obtained by dividing a cylindrical body in the left-right axis direction. A holding portion, comprising a connection driving portion that connects the plurality of curved plates so as to swing open and close, after the beads are supplied to the movable-side and fixed-side bead setters and the cylindrical workpiece is supplied to the former, One bead holding portion is retracted from the bead setter so as to pass a connection shaft between the former and the movable bead setter into a gap between the pair of chuck claws, and the other bead holding portion is connected to the pair of chuck claws. Retreat from the bead setter so that the connecting shaft between the former and the fixed bead setter passes through the gap between the chuck claws, and Curved plate of the holding part is intended to retreat from the former swings open upward to the front-rear direction.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings showing embodiments.

FIGS. 1 to 3 show an embodiment of an automatic two-position tire molding machine according to the present invention. This two-position automatic tire molding machine comprises a molding machine main body 1 and a beaded molding machine main body 1. A bead supply unit 2 for supplying a liquid, an inner liner / price servicer 3, an intermediate molded product removal unit 5,
It has.

The molding machine main body 1 has a pair of left and right bead setters 6, 6, one of which is provided movably in the left-right direction and the other of which is fixed, and a fixed side via a connecting shaft 7. A former 9 connected to the bead setter 6, a pair of right and left bladders 8, 8 provided on both left and right sides of the former 9, a band drum 10 provided movably in the left and right direction, and a cylinder from the band drum 10. A band transfer 11 for sending the workpiece to the former 9;
It has. A connection shaft 7 ′ (tailstock) that is connected to the former 9 to prevent misalignment is provided at the axis of the fixed-side bead setter 6.

More specifically, the molding machine main body 1 has a base 12 which is long on the left and right, and linear guides 13, 13 are provided on the right end of the base 12. The movable mounting portion 15 for holding the bead setter 6 on the movable side is connected to the linear guide.
The fixed mounting portion 16 is provided so as to be able to move left and right along 13, 13 and holds the bead setter 6 on the fixed side.
At the left end.

A band drum 10 is disposed in series with the former axis P (the band drum 10 is provided on the former axis P). That is, the base 45 of the band drum 10 is provided in series on the left side of the base 12 and on the same plane when viewed in plan.
Ten rotation driving means 14 are provided on the base 45 via the linear guides 13 so as to be movable left and right.

The band transfer 11 connects the work holding portion 19 composed of a plurality of curved plates 18 obtained by dividing a cylindrical body in the left-right axial direction and the plurality of curved plates 18 so as to be capable of swinging open / close. A connection driving unit 20 and a moving unit 21 for moving the work holding unit 19 in the up, down, left, and right directions via the connection driving unit 20
And

The work holding section 19 holds the cylindrical body approximately three axially.
It is composed of three equally curved plates 18. Further, the connection drive unit 20 includes a frame 22, and a pair of front and rear telescopic cylinders 23, 23 that are swingably provided at front and rear end edges of the frame 22. One curved plate 18 is attached to the lower portion of the frame 22 by a connecting member, and the two curved plates 18 are pivotally mounted on the rods of the front and rear telescopic cylinders 23 so as to be able to swing back and forth. ing. The front and rear telescopic cylinders 23,
The front and rear curved plates 18 and 18 swing back and forth by the expansion and contraction operation of 23, and the work holding portion 19 is in a state of being closed cylindrically or a state of being opened downward.

The moving means 21 is provided in the molding machine main body 1.
Of the support member 24, linear guides 25, 25 provided in the left-right direction along the upper edge of the support member 24, and left-right movement provided reciprocally along the linear guides 25, 25 And a telescopic cylinder 27 whose lower end is connected to the left and right moving unit 26 and whose upper end is connected to the frame 22 of the connection driving unit 20 via an L-shaped member. Thus, the work holding unit 19 is configured to move up and down. Then, the work holding unit 19 stands by at a lowered position between the band drum 10 and the fixed mounting unit 16 in an open state.

An intermediate molded product take-out section 5 provided at the rear of the molding machine main body 1 opens and closes a pair of upper and lower holding arms 28, 28 and a pair of upper and lower holding arms 28, 28 in a direction to approach and separate from each other. An opening and closing means 29 for opening and closing, and a moving means 30 for moving the opening and closing means 29 in the front, rear, left and right directions are provided.

As shown in FIGS. 1 to 4, the bead supply unit 2 includes a pair of left and right bead holders 31, 31 and a pair of left and right bead holders 31, 31 for moving the pair of bead holders 31, 31 in the front-rear direction. And a pair of bead holding portion moving means 32, 32.

The bead holding portion 31 holds a pair of upper and lower arcuate chuck claws 34, 34 in contact with the inner peripheral edge of the bead F while holding the annular bead F, and the tip of each chuck claw 34, 34. A pair of upper and lower arms 35, 35 provided integrally and in the front-rear direction so as to protrude left and right outwards, and an arc-shaped pressing plate 36 provided reciprocally right and left along the outer surface of the chuck claw 34.
And a reciprocating drive means 37 (for example, a thin cylinder) for reciprocating the pressing plate 36 left and right with respect to the chuck pawls 34.

The base ends of a pair of upper and lower arms 35, 35 of the bead holder 31 are attached to an attachment arm 39 of the bead holder moving means 32 via a frame part 38 (described later). The frame part 38 includes a mounting plate 40 provided at the tip of the mounting arm 39, and a screw shaft 41 provided on the mounting plate 40 so as to be rotatable in the vertical direction and having a left and right reverse screw part.
And a pair of upper and lower nut portions 42, 42 respectively screwed into the left and right reverse threaded portions and connected to the base ends of the pair of upper and lower arms 35, 35.
The upper and lower chuck claws 34, 34 can be moved and adjusted in the direction of approaching / separating from each other via a pair of upper and lower arms 35, 35 by rotating the screw shaft 41 forward and reverse.

The bead holding portion 31 thus configured is
The front end sides of the pair of upper and lower chuck claws 34 are open to form a gap 43.

Next, a method of forming a tire by the automatic two-position tire forming machine of the present invention will be described. FIGS. 1, 2 and 5 show a starting state of the molding operation, in which beads are set in left and right bead holders 31, 31 which stand by at predetermined standby positions.
At the same time, an inner liner / ply attaching step is performed on the band drum 10. Arrow G indicates the inner liner
This shows the ply attaching process.

Thereafter, as shown in FIGS. 2 and 6, the band drum 10 moves to the right and the work holding portion 19 is closed, so that a cylindrical work (not shown) formed by the band drum 10 is formed into a band. Delivered to transfer 11.

Thereafter, as shown in FIGS. 2 and 7, the band drum 10 is retracted to the original position, and the work holding portion 19 of the band transfer 11 and the pair of bead holding portions 31 of the bead supply portion 2 are moved. Move to the gap 44 between the fixed bead setter 6 and the former 9.

That is, the work holding portion 19 holding the cylindrical work sent from the band drum 10 moves up, moves to the right, crosses the fixed-side bead setter 6, and moves from above to the gap portion 44. Come. Further, the pair of bead holding portions 31 holding the beads advance and move to the gap portion 44. As a result, the work holding portion 19 and the left and right bead holding portions 31, 31 arranged on the left and right sides of the work holding portion 19,
It is arranged on the former axis P.

After that, as shown in FIGS. 2 and 8, the bead setter 6 on the movable side moves leftward,
The former 9 is the bead holder 31 and the work holder 19 on the right side.
And bead holding parts 3
1 and 31 slightly move to the left and right bead setters 6 and 6, and the beads are supplied to the left and right bead setters 6 and 6, and the cylindrical work is supplied to the former 9 from the work holding unit 19.

Thereafter, as shown in FIGS. 2, 3 and 9,
One and the other bead holding portions 31, 31 and the work holding portion 19 are retracted so as to avoid the bead setters 6, 6 on the movable side and the fixed side. At this time, the right (one) bead holding portion 31 corresponding to the movable-side bead setter 6 is provided between the former 9 and the movable-side bead setter 6 in the gap 43 between the pair of upper and lower chuck claws 34, 34. In order to pass through the connecting shaft 7 (reverse operation of the same path), the retreat from the bead setter 6 returns to the standby position, and the bead holding portion 31 on the left side (the other side) corresponding to the bead setter 6 on the fixed side.
Is arranged so that the connecting shaft 7 'between the former 9 and the fixed bead setter 6 passes through the gap 43 between the pair of upper and lower chuck claws 34, 34 (the same path is operated in reverse).
It retreats from the bead setter 6 and returns to the standby position. And,
Each of the curved plates 18 swings open and the work holding portion 19 is opened downward from the cylindrical closed state, and then rises (reverses the same path) to retract from the former 9 and wait. Return to position.

Then, while the bead holding units 31 and 31 and the work holding unit 19 are retracted, the beads are sent from the left and right bead setters 6 and 6 to the former 9, and the bead set / turn-up process is started.

Thereafter, as shown in FIGS. 2, 3 and 10,
The intermediate molded product take-out section 5 moves to grasp an intermediate molded product (not shown) formed by the former 9, and the movable bead setter 6 and the former 9 retreat to the right to remove the intermediate molded product. And the intermediate molded product take-out section 5
The intermediate molded product is transported to a predetermined place. The above is one cycle of the molding operation by the two-position tire automatic molding machine of the present invention.

FIG. 11 shows another embodiment of the automatic two-position tire forming machine of the present invention. In this automatic tire forming machine, a band drum 10 is arranged in parallel at a position rearward of a former axis P, and a work holding portion 19 of a band transfer 11 holding a cylindrical work from the band drum 10 is fixed. It is configured to move between the bead setter 6 on the side and the former 9 in the front-rear direction.

That is, in a plan view, the bead setter 6,
The bases 45 of the band drum 10 are provided side by side at the rear position of the base 12 of 6 and on the same plane. In the standby position, the work holding section 19 of the band transfer 11 is located on the same axis as the band drum 10 and at a position behind the gap 44 between the fixed bead setter 6 and the former 9. Are located.

When the band drum 10 moves rightward and the cylindrical work is delivered to the work holding portion 19 during tire molding, the work holding portion 19 advances to the gap portion 44 and a pair of The bead holding portions 31 are also configured to advance to the gap portion 44 from the opposite side. In this case, the intermediate molded product take-out part 5 is provided with the left and right bead holding parts 3.
It is arranged to be able to move back and forth between 1 and 31.

FIG. 12 shows another embodiment of the present invention. In this two-position automatic tire molding machine, a band drum 10 is arranged in parallel at an upper position with respect to a former axis P. The work holding portion 19 of the band transfer 11 holding the cylindrical work from the band drum 10 is configured to move from above to between the fixed bead setter 6 and the former 9.

That is, the bases 45 of the band drum 10 are provided in parallel above the bases 12 of the bead setters 6 and 6. Also, the work holding section 19 of the band transfer 11
At the standby position, on the same axis as the band drum 10,
Further, it is disposed above the gap 44 between the fixed bead setter 6 and the former 9.

When the band drum 10 moves to the right and the cylindrical work is delivered to the work holding portion 19 during the molding of the tire, the work holding portion 19 descends to the gap portion 44 and a pair of Bead holders 31 and 31 also have gaps 44
It is configured to move forward.

The present invention is not limited to the above-described embodiment. For example, in FIG. 11, a band drum 10 may be arranged in parallel at a position forward of the former axis P.
In this case, the band transfer 11 and the inner liner / price servicer are also provided at the front position, and the bead supply unit 2 and the intermediate molded product removal unit 5 are provided at the rear position.

[0043]

Since the present invention is configured as described above, the following effects can be obtained.

According to the first aspect, the step of supplying the beads to the right and left bead setters 6 and 6 and the step of supplying the work to the former 9 can be performed simultaneously, and the time required for the molding cycle is reduced. Further, after the bead supply step and the work supply step, the bead holding portions 31, 31 and the work holding portion 19 can quickly retreat in the direction orthogonal to the former axis P, so that the next step can be advanced immediately. Thus, the molding cycle time is reduced. Therefore, the production efficiency of the tire is greatly improved.

According to the second aspect of the present invention, space saving of front and rear depth dimensions can be performed. According to the third aspect, space saving of the left and right width dimensions can be performed. According to the fourth aspect, space saving of the front and rear depth dimensions and the left and right width dimensions can be performed.

According to the fifth aspect, the bead supply step to the left and right bead setters 6 and 6 and the work supply step to the former 9 can be performed simultaneously (or in close time), and
Since the next step can be advanced while the bead holding sections 31 and 31 and the work holding section 19 are retracted, the molding cycle time is reduced, and the tire production efficiency is improved.

After the bead supply step and the work supply step (according to claim 6), the bead holding portions 31, 31 and the work holding portion 19 can quickly retreat in the direction orthogonal to the former axis P. That is, there is no time loss that the movable-side bead setter 6 is once moved backward.

[Brief description of the drawings]

FIG. 1 is a configuration explanatory diagram showing one embodiment of the present invention.

FIG. 2 is a configuration explanatory view showing a molding machine main body.

FIG. 3 is an explanatory diagram showing a positional relationship between a molding machine main body and peripheral mechanical devices.

FIG. 4 is a main part side view showing a bead holding unit.

FIG. 5 is a simplified explanatory view showing an inner liner / ply attaching step.

FIG. 6 is a simplified explanatory view showing a process of feeding a work to a band transfer.

FIG. 7 is a first simplified explanatory view showing a bead supply step and a work supply step to a former;

FIG. 8 is a second simplified explanatory view showing a bead supply step and a work supply step to a former.

FIG. 9 is a simplified explanatory view showing a bead setting step.

FIG. 10 is a simplified explanatory diagram showing an intermediate molded product removal process.

FIG. 11 is a configuration explanatory view showing another embodiment of the present invention.

FIG. 12 is a configuration explanatory view showing another embodiment of the present invention.

FIG. 13 is a configuration explanatory view showing a conventional example.

FIG. 14 is a simplified explanatory view showing a bead supply step of a conventional tire building operation.

FIG. 15 is a simplified explanatory view showing a state after the inner liner / ply attaching step.

FIG. 16 is a simplified explanatory diagram showing a work supply process to a former.

FIG. 17 is a simplified explanatory diagram showing a retracted state of band transfer.

FIG. 18 is a simplified explanatory view showing a bead setting step.

FIG. 19 is a first simplified explanatory view showing an intermediate molded product removal step.

FIG. 20 is a second simplified explanatory view showing an intermediate molded product removal step.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Forming machine main body 2 Bead supply part 3 Inner liner / price servicer 5 Intermediate molded product take-out part 6 Bead setter 7 Connecting shaft 7 'Connecting shaft 8 Bladder 9 Former 10 Band drum 11 Band transfer 18 Curved plate 19 Work holding part 20 Connection Driving unit 31 Bead holding unit 34 Chuck claw 43 Gap 44 Gap P Former shaft center

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Yuichi Takai 7-40-3 Shimobayashi-cho, Toyota-shi, Aichi Prefecture Sumitomo Rubber Industries Co., Ltd. Shozan Ryo 301 F-term (reference) 4F212 AA45 AH20 VA02 VA12 VC02 VK04 VK13 VK33 VM06 VP27

Claims (6)

[Claims] 1. A molding machine comprising: a molding machine main body 1; a bead supply unit 2 for supplying beads to the molding machine main body 1; an inner liner / price servicer 3; The machine body 1 is connected to a pair of left and right bead setters 6, 6, one of which is provided movably in the left-right direction and the other is fixed, and the movable bead setter 6 via a connection shaft 7. The former 9, a pair of left and right bladders 8, 8 provided on both left and right sides of the former 9, a band drum 10 movably provided in the left and right direction, and a cylindrical work from the band drum 10 are described above. A band transfer 11 for feeding to a former 9, wherein the bead supply unit 2 has a pair of arcuate chuck claws 34 for holding the beads. The band transfer 11 is provided with a holding portion 31, and the band transfer 11 swings open and close the work holding portion 19 composed of a plurality of curved plates 18 obtained by dividing a cylindrical body in the left-right axial direction. A connection drive unit 20 which is connected to the bead setter 6 on the fixed side.
The bead holding portion 31 and the work holding portion 19, which are moved on the former axis P between the former and the former 9 and are arranged side by side, are moved so that the former 9 skewers, and the former 9 An automatic two-position tire forming machine characterized by supplying a work. 2. A band drum 10 is arranged in series with respect to a former axis P, and a work holding portion 19 of the band transfer 11 holding a cylindrical work from the band drum 10 is a fixed-side bead. 2. A two-position automatic tire molding machine according to claim 1, wherein said two-position tire automatic molding machine is configured to move from above to between said bead setter 6 and said former 9 beyond said setter 6. 3. A band holding member 19 of the band transfer 11 in which a band drum 10 is arranged in parallel at a front position or a rear position with respect to a former axis P, and holds a cylindrical work from the band drum 10. 2. The automatic molding machine for a two-position tire according to claim 1, wherein the movable member moves from the front-rear direction between the fixed bead setter 6 and the former 9. 4. A band drum 11 is disposed in parallel with an upper position with respect to the former axis P, and the band transfer 11 holding a cylindrical work from the band drum 10.
The two-position tire automatic molding machine according to claim 1, wherein the work holding portion (19) moves from above between the fixed bead setter (6) and the former (9). 5. A molding machine comprising: a molding machine main body 1; a bead supply unit 2 for supplying beads to the molding machine main body 1; an inner liner / price servicer 3; The machine body 1 is connected to a pair of left and right bead setters 6, 6, one of which is provided movably in the left-right direction and the other is fixed, and the movable bead setter 6 via a connection shaft 7. The former 9, a pair of left and right bladders 8, 8 provided on both left and right sides of the former 9, a band drum 10 movably provided in the left and right direction, and a cylindrical work from the band drum 10 are described above. A band transfer 11 to be sent to a former 9 by a two-position automatic tire forming machine, comprising: a gap between the fixed side bead setter 6 and the former 9 The work holding part 19 of the band transfer 11 holding the cylindrical work at 44 moves, and the pair of right and left bead holding parts 31 of the bead supply part 2 holding the beads at the gap 44 move. ,afterwards,
One of the bead holders arranged on the left and right on the former axis P
After the former 9 moves so as to skew the former 31 and the work holding part 19, a cylindrical work is supplied to the former 9, and further, beads are supplied to the bead setters 6 and 6 on the movable side and the fixed side. A tire molding method characterized in that one and the other bead holding portions (31, 31) and the work holding portion (19) are retracted so as to avoid the movable side and fixed side bead setters (6, 6). 6. The bead supply unit 2 includes a bead holding unit 31 having a pair of arc-shaped chuck claws 34 for holding a bead, and the band transfer 11 includes a plurality of cylindrical bodies divided in the left-right axis direction. A work holding portion 19 comprising a plurality of curved plates 18 and a connecting drive portion 20 for connecting the plurality of curved plates 18 in a swingable manner. Supplied and former 9
After the cylindrical work is supplied to one of the bead holding portions 31
Is retracted from the bead setter 6 so that the connecting shaft 7 between the former 9 and the movable bead setter 6 passes through the gap 43 between the pair of chuck claws 34, 34, and the other bead holding part 31 Is the pair of chuck claws 34,
34 are retracted from the bead setter 6 so that the connecting shaft 7 'between the former 9 and the bead setter 6 on the fixed side passes through the gap 43 of the former 34, and the curved plates 18 of the work holder 19 are rocked. The tire molding method according to claim 5, wherein the tire is opened and retracted from the former (9) upward or forward and backward.