JP2020124859A - Bead core storage device - Google Patents

Abstract

To provide a bead core storage device 12 capable of contributing to the enhancement of tire productivity.SOLUTION: A bead core storage device 12 is provided with: a skewer member 14 from which a bead core B is suspended with a stopper rubber G of the bead core B up, and a displacing module 24 for displacing the position of the stopper rubber G of the bead core B suspended from the skewer member 14. The displacing module 24 is provided with a rotation rod 48 which comes in contact with an inner circumferential surface EB of the bead core B, and rotates the bead core B.SELECTED DRAWING: Figure 6

Description

The present invention relates to a bead core storage device.

The bead of the tire includes a ring-shaped bead core and a bead apex that extends radially outward from the bead core. This bead is manufactured using, for example, the manufacturing apparatus disclosed in Patent Document 1 below.

In the manufacture of beads, a core body is obtained by spirally winding a metal wire. Since the core body includes the ends of the wires, the ends are restrained by the rubber stopper together with a part of the core body in the circumferential direction so that the bundle of wires does not come apart. As a result, a bead core having a core body and a stopper rubber is obtained. A bead is obtained by combining a bead apex with this bead core.

In the manufacture of beads, the bead core is stored in a bead core storage device until combined with the bead apex.

FIG. 8 shows a conventional bead core storage device 2. The bead core storage device 2 includes a skewer member 4 extending in the front-rear direction. The bead core B is suspended on the skewer member 4. In order to prevent the bead cores B from sticking to each other, a spacer S is inserted between one bead core B and another bead core B.

JP, 2016-179565, A

As shown in FIG. 8, in the upper portion of the skewer member 4, the inner peripheral surface EB of the bead core B is located inside the inner peripheral edge ES of the spacer S. In the bead core B, the portion of the stopper rubber G is thicker than the other portions. Therefore, when the bead core B is hung on the skewer member 4 with the stopper rubber G facing upward, a part of the stopper rubber G may protrude from the inner peripheral edge ES of the spacer S and the stopper rubbers G may adhere to each other.

The close contact between the rubber stoppers G affects the productivity of the tire. Therefore, from the viewpoint of improving the productivity, it is required to establish a technique capable of preventing the adhesion of the stopper rubbers G when the bead cores B are stored.

The present invention has been made in view of such circumstances, and an object of the present invention is to provide a bead core storage device that can contribute to improvement in tire productivity.

A bead core storage device according to one aspect of the present invention includes a core body including a spirally wound wire, and a stopper rubber that covers a part of the core body in the circumferential direction together with an end portion of the wire. It is a bead core storage device for storing the bead core of. This bead core storage device includes a skewer member on which the bead core is suspended with the retaining rubber on the upper side, and a position shifting module for shifting the position of the retaining rubber of the bead core suspended on the skewer member. The displacement module includes a rotating rod that abuts on an inner peripheral surface of the bead core and rotates the bead core.

Preferably, in this bead core storage device, the position shifting module includes an elevating unit for elevating and lowering the rotating rod. By raising the rotating rod, the bead core suspended on the skew member is supported by the rotating rod and separated from the skew member. By lowering the rotary rod, the bead core separated from the skewer member is suspended again from the skewer member.

Preferably, in this bead core storage device, the displacement module includes a moving unit for moving the rotating rod forward and backward. By advancing the rotating rod, the rotating rod is passed inside the bead core. By retracting the rotating rod, the rotating rod passed through the inside of the bead core is pulled out from the bead core.

In the bead core storage device of the present invention, adhesion between the stopper rubbers is prevented. This bead core storage device can contribute to the improvement of tire productivity.

FIG. 1 is a front view showing an example of a bead core storage device according to an embodiment of the present invention. 2 is a side view of the bead core storage device shown in FIG. FIG. 3 is an explanatory diagram illustrating a state in which the spacer and the bead core are suspended from the skewer member of the bead core storage device. FIG. 4 is an explanatory diagram for explaining the operation of the position shifting module of the bead core storage device. FIG. 5: is explanatory drawing explaining operation|movement of the position shift module of a bead core storage device. FIG. 6 is an explanatory diagram for explaining the operation of the rotary rod of the position shift module. FIG. 7 is an explanatory diagram illustrating the positional relationship between the stopper rubber and the spacer in the bead core after rotation. FIG. 8: is explanatory drawing explaining the state by which the spacer and bead core are suspended by the skewer member of the conventional bead core storage device.

Hereinafter, the present invention will be described in detail based on preferred embodiments with reference to the drawings as appropriate.

[Bead core storage device]
1 and 2 show a bead core storage device 12 according to an embodiment of the present invention. FIG. 1 is a front view of the bead core storage device 12, and FIG. 2 is a side view of the bead core storage device 12.

In FIG. 1, the left-right direction is the width direction of the bead core storage device 12. In FIG. 2, the left-right direction is the front-back direction of the bead core storage device 12. 1 and 2, the upper side of the paper is the upper side of the bead core storage device 12, and the lower side of the paper is the lower side of the bead core storage device 12.

The bead core storage device 12 is used to store the ring-shaped bead core B. The bead core B is a tire component. The bead core B forms a part of the bead of the tire.

The bead core B has a core body C and a rubber stopper G. The core body C includes a spirally wound wire. The wire is made of metal, specifically steel. The rubber stopper G covers a part of the core body C in the circumferential direction together with the ends of the wires. The stopper rubber G is made of an uncrosslinked rubber composition.

The bead apex is combined with the bead core B. As a result, beads are formed. In the manufacture of tires, this bead is combined with other members to prepare green tires. A tire is obtained by pressing and heating this green tire in a mold.

[Skewer member]
The bead core storage device 12 includes a skewer member 14. The bead core B is hung on the skewer member 14. As shown in FIG. 2, a spacer S is inserted between one bead core B and another bead core B located next to the one bead core B from the viewpoint of preventing the bead cores B from adhering to each other.

As shown in FIG. 3A, in the bead core storage device 12, the bead core B manufactured in the core manufacturing device (not shown) is transferred by the core transfer device 16. The core transfer device 16 is a skewer. The spacer S and the bead core B, which have been previously hung on the member 14, are moved rearward, and the bead core B is hung on the skewer member 14. Then, as shown in FIG. 3B, the spacer S is supplied to the bead core storage device 12 by the spacer supply device 18, and the spacer S is hung on the skewer member 14. In this way, the bead cores B and the spacers S are alternately hung on the skewer member 14. Thereby, the bead cores B and the spacers S are alternately arranged in the front-rear direction.

In the bead core storage device 12, the structure of the skewer member 14 is not particularly limited as long as the bead core B and the spacer S can be suspended. In this bead core storage device 12, from the viewpoint of stably holding the bead core B and the spacer S, the portion of the skewer member 14 for suspending the bead core B and the spacer S is composed of a pair of bars 20 arranged in parallel in the width direction. .. These bars 20 are supported by the frame 22 of the bead core storage device 12 and extend in the front-rear direction.

[Position shifting module]
The bead core storage device 12 includes a displacement module 24. As will be described later, in this bead core storage device 12, the position shifting module 24 shifts the position of the stopper rubber G of the bead core B suspended on the skewer member 14.

The position shifting module 24 includes a moving unit 26, a lifting unit 28, and a rotating unit 30.

In this bead core storage device 12, the moving unit 26 is composed of a first moving unit 26a and a second moving unit 26b. The elevating unit 28 is provided between the first moving unit 26a and the second moving unit 26b. The rotation unit 30 is attached to the second moving unit 26b.

The first moving unit 26a is movably supported with respect to a main body 32 fixed to the frame 22 of the bead core storage device 12 (hereinafter also referred to as the first main body 32a). And a table section 34 (hereinafter, also referred to as a first table section 34a). In this bead core storage device 12, the first table portion 34a is movable back and forth.

In this bead core storage device 12, the configuration of the first moving unit 26a is not particularly limited as long as the first table portion 34a is configured to be movable back and forth. In this bead core storage device 12, a commercially available linear motion guide is applied as the first moving unit 26a. In the first moving unit 26a, the first table portion 34a is moved with respect to the first body portion 32a by controlling the pressure inside the first body portion 32a by the compressed air.

The elevating unit 28 is attached to the first sub-frame 36a fixed to the first table portion 34a of the first moving unit 26a. As a result, the lifting unit 28 is supported by the first moving unit 26a.

The elevating unit 28 includes a cylinder portion 38 fixed to the first sub-frame 36 a, and a rod portion 40 movably supported with respect to the cylinder portion 38. In this bead core storage device 12, the rod portion 40 can move up and down.

In the bead core storage device 12, there is no particular limitation on the configuration of the lifting unit 28 as long as the rod portion 40 is configured to be vertically movable. In this bead core storage device 12, a commercially available air cylinder is used as the lifting unit 28. In the lifting unit 28, the rod portion 40 includes a main rod 42 and a pair of guide rods 44. The main rod 42 is moved with respect to the cylinder portion 38 by controlling the pressure in the cylinder portion 38 by the compressed air. The guide rods 44 located on both sides of the main rod 42 guide the main rod 42 that moves up and down.

The second moving unit 26b is different from the main body 32 (hereinafter also referred to as the second main body 32b) fixed to the rod portion 40 of the lifting unit 28 via the connection plate 46, and the second main body 32b. And a table section 34 (hereinafter, also referred to as a second table section 34b) that is movably supported. In the bead core storage device 12, the second table portion 34b is movable back and forth.

In this bead core storage device 12, the configuration of the second moving unit 26b is not particularly limited as long as the second table portion 34b is configured to be movable back and forth. In this bead core storage device 12, a commercially available linear motion guide is applied as the second moving unit 26b. In the second moving unit 26b, the second table portion 34b is moved with respect to the second body portion 32b by controlling the pressure inside the second body portion 32b by the compressed air.

The rotating unit 30 is attached to the second sub-frame 36b fixed to the second table portion 34b of the second moving unit 26b. As a result, the rotary unit 30 is supported by the second moving unit 26b.

In this bead core storage device 12, the rotary unit 30 includes a rotary rod 48, a prime mover 50, and a transmission tool 52.

The rotating rod 48 is a round rod. The rotary rod 48 extends in the front-rear direction. The rotary rod 48 is rotatably supported by the second sub-frame 36b via a bearing (not shown). In FIG. 2, the alternate long and short dash line RL is the central axis of the rotary rod 48. The rotary unit 30 is configured such that the rotary rod 48 rotates about the central axis RL.

The prime mover 50 is fixed to the second sub-frame 36b. The prime mover 50 generates a torque for rotating the rotary rod 48. In the rotating unit 30, the rotating rod 48 is rotated by driving the prime mover 50. In this bead core storage device 12, the prime mover 50 is a motor.

The transmission 52 is located between the rotary rod 48 and the prime mover 50. The transmission tool 52 transmits the torque generated by the prime mover 50 to the rotary rod 48. A transmission mechanism using a pulley is adopted for the transmission tool 52. A transmission mechanism such as a gear may be adopted for the transmission tool 52.

In the bead core storage device 12, the rotating unit 30 is provided with a pair of rotating rods 48 arranged in parallel in the width direction. The rotary unit 30 is configured such that the left and right rotary rods 48 rotate in the same rotational direction at the same rotational speed by driving the prime mover 50.

[Operation of the bead core storage device 12]
Next, the operation of the position shifting module 24 in the bead core storage device 12 will be described with reference to FIGS. 4 to 6. For convenience of description, the spacer S suspended from the skewer member 14 is not shown. Further, the number of bead cores B shown in these figures is one. The bead core B is the bead core B immediately after being transported by the core transport device 16 and being hung on the skewer member 14. The bead core B is hung on the skewer member 14 with the part of the rubber stopper G facing upward.

When the core transport device 16 transports the bead core B, the first table portion 34a of the first moving unit 26a moves forward and the second table portion 34b of the second moving unit 26b moves forward, as shown in FIG. To do. The elevating unit 28 is attached to the first table portion 34a, the second moving unit 26b is attached to the elevating unit 28, and the rotating unit 30 is attached to the second table portion 34b of the second moving unit 26b. Since the rotating unit 30 includes the rotating rod 48, the rotating rod 48 moves forward by advancing the first table portion 34a and the second table portion 34b. Although not shown, the rotary table 48 is retracted by retracting the first table portion 34a and the second table portion 34b. In the bead core storage device 12, the first moving unit 26a and the second moving unit 26b, that is, the moving unit 26 moves the rotating rod 48 forward and backward.

In this bead core storage device 12, the rotating rod 48 is passed inside the bead core B by advancing the rotating rod 48. In this bead core storage device 12, if the advanced rotating rod 48 is passed inside the bead core B suspended on the skewer member 14, the bead core B is suspended on the skewer member 14 after advancing the rotating rod 48. Alternatively, the rotating rod 48 may be advanced after the bead core B is suspended on the skewer member 14. In the bead core storage device 12 shown in FIG. 4, the rotating rod 48 is in the fully advanced state.

As shown in FIG. 4, when the rotary rod 48 is fully advanced, the position of the rotary rod 48 and the position of the bead core B in the front-back direction overlap. In the bead core storage device 12, the position of the rotating rod 48 is controlled so that the bead core B is located near the center of the rotating rod 48 when the rotating rod 48 is fully advanced.

In this bead core storage device 12, when the rotating rod 48 is passed inside the bead core B, the rod portion 40 of the elevating unit 28 rises as shown in FIG. As described above, the second main body portion 32b of the second moving unit 26b is fixed to the rod portion 40, the rotary unit 30 is fixed to the second table portion 34b of the second moving unit 26b, and The rotating unit 30 includes a rotating rod 48. Therefore, by raising the rod portion 40, the rotary rod 48 rises. Although not shown, by lowering the rod portion 40, the rotary rod 48 is lowered. In this bead core storage device 12, the elevating unit 28 raises and lowers the rotating rod 48.

FIG. 6A shows a state in which the rotary rod 48 is passed inside the bead core B suspended on the skewer member 14. When the rotating rod 48 is passed through the inside of the bead core B suspended on the skewer member 14, the rotating rod 48 is lifted as shown in FIG. 6B. In this bead core storage device 12, the bead core B is supported by the rotating rod 48 by raising the rotating rod 48. Then, the rotating rod 48 lifts the bead core B, and the bead core B is separated from the skewer member 14.

In this bead core storage device 12, when the rotating rod 48 is passed inside the bead core B, the rotating rod 48 is rotated. Since the rotary rod 48 supporting the bead core B is in contact with the inner peripheral surface EB of the bead core B, as shown in FIG. 6B, the rotation of the rotary rod 48 causes the position of the bead core B to change. Specifically, the position of the stopper rubber G is shifted in the rotation direction of the rotary rod 48.

In this bead core storage device 12, when the rubber stopper G is moved by a predetermined distance, the rod portion 40 of the lifting unit 28 is lowered. As a result, as shown in FIG. 6C, the rotating rod 48 descends, and the bead core B separated from the skewer member 14 is suspended again from the skewer member 14. In this bead core storage device 12, by lowering the rotary rod 48, the bead core B separated from the skewer member 14 is suspended again from the skewer member 14.

Although not shown, in this bead core storage device 12, when the bead core B is suspended from the skewer member 14 again by the lowering of the rotating rod 48, the rotating rod 48 is retracted by the moving unit 26. As the rotary rod 48 retracts, the rotary rod 48 passed through the inside of the bead core B is pulled out from the inside of the bead core B. In this bead core storage device 12, the rotating rod 48 is retracted so that the rotating rod 48 passed inside the bead core B is pulled out from the inside of the bead core B.

As described above, in the bead core storage device 12, the rotating rod 48 of the displacement module 24 contacts the inner peripheral surface EB of the bead core B suspended on the skewer member 14 to rotate the bead core B. The position shifting module 24 includes a rotating rod 48 that abuts the inner peripheral surface EB of the bead core B and rotates the bead core B. Therefore, as shown in FIG. 7, the position of the stopper rubber G located on the upper side immediately after being suspended on the skewer member 14 by the core transport device 16 is displaced. The position shift module 24 shifts the position of the stopper rubber G of the bead core B suspended on the skewer member 14.

In the bead core storage device 12, the moving distance of the stopper rubber G can be easily controlled by adjusting the time during which the rotating rod 48 is in contact with the bead core B and the rotating speed of the rotating rod 48. Therefore, in this bead core storage device 12, the stopper rubber G of the bead core B can be intentionally arranged at the portion where the spacer S projects inward from the inner peripheral surface EB of the bead core B. Since the stopper rubber G can be arranged so that the entire stopper rubber G is located inside the inner peripheral edge ES of the spacer S, in the bead core storage device 12, the stopper rubber G is prevented from adhering to each other when the bead core B is stored. .. The bead core storage device 12 can contribute to the improvement of tire productivity.

As described above, the position shifting module 24 of the bead core storage device 12 includes the pair of rotating rods 48 arranged side by side in the width direction. In the bead core storage device 12, the rotating rods 48 may be arranged inside the pair of bars 20 forming the skewer member 14 or outside the pair of bars 20 in the width direction. From the viewpoint that the bead core B can be stably rotated while stably supporting the bead core B, for example, as shown in FIG. 7, in the width direction of the bead core storage device 12, a rotating rod 48 is provided outside the pair of bars 20. Are preferably arranged.

As described above, according to the present invention, it is possible to obtain the bead core storage device 12 that can prevent the adhesion of the rubber stoppers G during the storage of the bead core B and contribute to the improvement of the productivity of the tire.

The embodiments disclosed this time are illustrative in all points and not restrictive. The technical scope of the present invention is not limited to the above-described embodiment, and the technical scope includes all modifications within the scope equivalent to the configurations described in the claims.

The bead core storage device described above can also be applied as a bead storage device configured by combining a bead core with a bead apex.

2, 12... Bead core storage device 4, 14... Skewer member 16... Core transport device 18... Spacer supply device 24... Position shifting module 26... Moving unit 28... Lifting unit 30... Rotating unit 32... Main part of moving unit 26 34... Table part of moving unit 26 38... Cylinder part of lifting unit 28 40... Rod part of lifting unit 28 48... Rotating rod 50...Motor 52...Transmission tool

Claims (3)

A bead core storage device for storing a ring-shaped bead core, comprising: a core main body including a spirally wound wire; and a stopper rubber that covers a part of the core main body in a circumferential direction together with an end portion of the wire. hand,
A skewer member on which the bead core is suspended with the stopper rubber on the upper side,
A position shifting module that shifts the position of the stopper rubber of the bead core suspended on the skewer member,
A bead core storage device, wherein the displacement module includes a rotating rod that abuts on an inner peripheral surface of the bead core and rotates the bead core. The position shifting module includes an elevating unit that raises and lowers the rotating rod,
By raising the rotating rod, the bead core suspended on the skewer member is supported by the rotating rod and separated from the skewer member,
The bead core storage device according to claim 1, wherein the bead core separated from the skewer member is suspended again from the skewer member by lowering the rotating rod. The position shifting module includes a moving unit that moves the rotary rod forward and backward.
By advancing the rotating rod, the rotating rod is passed inside the bead core,
The bead core storage device according to claim 1, wherein the rotating rod passed through the inside of the bead core is pulled out from the bead core by retracting the rotating rod.

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