JP2009286009A - Feeding apparatus of bead member - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bead member feeding apparatus that can minimize deformation of a bead member caused by gravity even through the bead member is stored for a long period of time. <P>SOLUTION: A plurality of chains 5 are installed that are trained about a pair of upper and lower pulleys 3, 4, with a plurality of receiving plates 7 attached to each chain 5 with equal prescribed spaces apart in the vertical directions. The respective receiving plates 7 of the respective chains 5 are set so as to be arrayed at the same height position. The receiving plates 7 attached to the respective chains 5 are configured to be synchronously elevated or lowered, with a bead member B placed flat and stored on the receiving plates 7 arrayed at the same height position. The bead member B so stored are successively moved upward while placed flat, taken out by a transfer machine 11 at the upper end of a feeding unit 2, and supplied to a separate processing. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a bead member supply device, and more particularly, to a bead member supply device capable of minimizing deformation of the bead member due to gravity even when the stock time is long.

  When manufacturing a pneumatic tire, bead members are attached to both ends of a cylindrical rubber member made of a carcass material wound around a molding drum, and both end portions of the rubber member are folded so as to wrap the bead member. Green tires are being molded. Various devices for supplying the bead member to the forming drum have been proposed (see, for example, Patent Document 1). The bead member supply device of Patent Document 1 includes a bead stacker that can stock a large number of bead members. In this bead stacker, a plurality of attachments for holding bead members at a predetermined interval are provided on an endless chain stretched in the vertical direction. Then, by operating the endless chain, the bead member held by the attachment is moved along the endless chain and sequentially supplied to the forming drum.

  By the way, the bead member is configured by attaching a bead filler made of unvulcanized rubber to the outer periphery of a bead wire formed in an annular shape. Therefore, the unvulcanized rubber portion of the bead member is very easily deformed, and changes with time are caused by its own weight. When the bead member (bead filler) formed in a predetermined shape is used in a deformed state, particularly in a deformed state biased in the circumferential direction, the rubber volume of the molded green tire is biased, and the uniformity is adversely affected. Therefore, it is important to minimize the deformation of the bead member even if it is supplied to the forming drum before being deformed or used.

In the bead stacker of Patent Document 1, the bead member held by the attachment is in a standing state when it moves to the upper end of the endless chain. The vulcanized rubber part is deformed so as to be biased downward by gravity. Therefore, this bead stacker has a disadvantageous structure for stably supplying a bead member with little deformation when the stock time is long.
Japanese Utility Model Publication No. 1-122923

  An object of the present invention is to provide a bead member supply device capable of minimizing deformation of the bead member due to gravity even when the stock time is long.

  In order to achieve the above object, the bead member supply device of the present invention is provided with a plurality of conveying means mounted between a pair of upper and lower pulleys, and a plurality of receiving plates are attached to each conveying means at the same predetermined interval in the vertical direction. In addition, the individual receiving plates of the respective conveying means are set so as to be arranged at the same height position, and the supply unit is provided with a synchronous raising / lowering means for raising and lowering the receiving plates attached to the respective conveying means in synchronization. The bead member is placed in a flat state on a receiving plate that is configured and arranged at the same height position of each conveying means.

  Here, each said conveyance means can also be arrange | positioned in the inner peripheral area | region of the bead member laid in the flat state in the said receiving plate. A plurality of the supply units may be provided, and these supply units may be disposed on the rotating plate. Further, the receiving plate may be provided with a positioning portion that contacts the inner peripheral surface of the bead member placed in a flat state and positions the bead member.

  According to the present invention, the bead members are sequentially moved upward and supplied in the flat state by raising the receiving plates attached to the respective conveying means placed in the flat state in synchronization. It can be taken out at the upper end of the unit. In this way, since the bead member is always in a flat state from when the bead member is stocked to the supply unit until it is taken out, deformation of the bead member due to gravity is minimized even when the stock time is long. Limiting the volume in the circumferential direction can be suppressed. Therefore, by using the bead member supplied by the bead member supply device of the present invention, it is possible to prevent deterioration of uniformity due to the bead member of the manufactured tire.

  Hereinafter, a bead member supply device of the present invention will be described based on the embodiments shown in the drawings.

  As illustrated in FIGS. 1 and 2, the bead member supply device 1 (hereinafter referred to as the supply device 1) of the present invention has a supply unit 2. The supply unit 2 includes a chain 5 spanned between a pair of an upper pulley 3 and a lower pulley 4 that are pivotally supported by a support column 6 that is erected vertically. In this embodiment, four struts 6 are erected. However, in each of the plurality of struts 6, an endless chain 5, a belt, or the like formed between a pair of the upper pulley 3 and the lower pulley 4. It is only necessary that the conveying means is mounted.

  A plurality of receiving plates 7 are attached to each chain 5 at the same predetermined interval in the vertical direction. That is, the receiving plate 7 disposed on any of the columns 6 is fixed to each chain 5 at the same vertical distance. The receiving plate 7 has a substantially horizontal surface. In this embodiment, two chains 5 are installed on one column 6, and the receiving plate 7 is fixed so as to straddle the two chains 5, but one chain 5 is installed on one column 6. You may make it the structure to carry out. And each support | pillar 6, ie, each receiving plate 7 attached to each chain 5, is set so that it may arrange in the same height position.

  Each chain 5 is structured to operate by driving one drive motor 8. A drive chain 8a is placed between the drive motor 8 and a shaft 8b that supports the lower pulley 4 installed on one support column 6 (the support column 6 positioned at the top in FIG. 1). The shaft 8 b that supports the lower pulley 4 installed on the other column 6 is connected via a gear box 9. Therefore, when the drive motor 8 is operated, the driving force is transmitted to each lower pulley 4 in synchronization, and each chain 5 operates in synchronization. Accordingly, the receiving plate 7 attached to each chain 5 moves up and down in synchronization. In this way, the drive motor 8, the drive chain 8a, the shaft 8b, and the gear box 9 serve as synchronous elevating means for elevating and lowering the receiving plate 7 attached to each chain 5.

  The bead member B is placed in a flat state on the receiving plate 7 arranged at the same height position of each chain 5. In this embodiment, one bead member B is placed on four receiving plates 7 arranged at an equal center angle with respect to the center of the bead member B. The receiving plate 7 on which one bead member B is placed may be two, three, or a plurality of five or more. However, the receiving plate 7 is arranged at an equal center angle with respect to the center of the bead member B to be placed. It is preferable to do. The bead member B includes a bead wire formed in an annular shape and a bead filler having a triangular cross section made of unvulcanized rubber attached to the outer periphery of the bead wire.

  Next, a method for supplying the bead member B using the supply device 1 will be described.

  As illustrated in FIG. 2, after the bead members B are stocked in a flat state on all of the receiving plates 7 arranged at the same height, the drive motor 8 is operated and the chain 5 is moved to each chain 5. The attached receiving plate 7 is raised synchronously. Thereby, the bead member B stocked in the flat state moves upward while maintaining the flat state.

  The drive motor 8 is stopped when the receiving plate 7 on which the bead member B located at the uppermost position is in the vicinity of the uppermost position in a horizontal state. In this state, the transfer machine 11 suspended from the ceiling is lowered from the upper position of the supply unit 2 to the position of the bead member B located at the uppermost position. Then, the claw portion 11a that has been closed (folded in the direction of diameter reduction) is opened at the position of the lower surface of the bead member B and placed on the claw portion 11a. Next, after the transfer machine 11 is moved upward to a predetermined height, it is horizontally moved to supply the bead member B to another process (green tire forming process).

  When supplying the next bead member B, the drive motor 8 is operated again, and similarly, the uppermost bead member B is moved upward to the upper end of the supply unit 2 which is the take-out position. Take out. Thus, the bead member B can be smoothly supplied by repeating the process of taking out the stocked bead member B by moving it upward to the take-out position.

  The receiving plate 7 that has been taken out of the bead member B is moved downward from the upper end of the supply unit 2 along with the movement of the chain 5 and is accommodated in the inner peripheral region of the stocked bead member B. . After all the stocked bead members B are taken out, the supply unit 2 is replenished with new bead members B according to the following procedure and stocked.

  First, a new bead member B is placed in a flat state on the receiving plate 7 that is arranged in the uppermost position in the horizontal state at the upper end of the supply unit 2 that is the take-out position of the bead member B. Next, each chain 5 is operated in the opposite direction to that when the bead member B is supplied, and each receiving plate 7 is lowered synchronously. In this manner, the empty receiving plate 7 accommodated in the inner peripheral area of the bead member B placed in the flat position while moving the new bead member B placed previously in the flat state while moving downward. Is moved to the upper end of the supply unit 2 so as to be in a horizontal state. Next, a new bead member B is placed in a flat state on the plurality of receiving plates 7 moved to the uppermost position. Thereafter, similarly, at the upper end of the supply unit 2, a new bead member B is sequentially placed on a plurality of receiving plates 7 arranged at the same height in a flat state, and the bead member B is replenished. Stock in flat position.

  Thus, in the present invention, since the bead member B is always in a flat state from when the bead member B is stocked to the supply unit 2 until it is taken out, even if the stock time becomes long, the gravity It becomes possible to minimize the deformation of the bead member B (the unvulcanized rubber portion) due to the above, and the volume deviation in the circumferential direction of the bead member B can be suppressed. Therefore, by using the bead member B supplied by the supply device 1, it is possible to prevent the deterioration of the uniformity of the green tire, and hence the deterioration of the uniformity due to the bead member B of the manufactured tire.

  In this embodiment, each chain 5 is arranged in the inner peripheral region of the bead member B that is placed flat on the receiving plate 7. Since the inner peripheral area, which is an empty space of the annular bead member B, is thus used without waste, the supply device 1 can be made compact.

  Further, the receiving plate 7 protrudes upward from a mounting bolt 7 a that fixes the receiving plate 7 to the base portion fixed to the chain 5. Then, when the bead member B is placed at a predetermined position in a flat state, the mounting bolt 7a is set to abut on the inner peripheral surface of the bead member B. Therefore, when the bead member B is replenished to the supply unit 2, a large number of bead members B can be placed in a predetermined position without any variation by simply placing the bead member B on the receiving plate 7 so that the inner peripheral surface is in contact with the mounting bolt 7a. Can be placed.

  In this way, the mounting bolt 7a can function as a positioning portion, and the bead member B can be positioned and placed as prescribed. By placing the bead member B at a predetermined position on the receiving plate 7, it is possible to prevent a trouble that the transfer machine 11 fails to hold the bead member B when the bead member B is taken out. A dedicated positioning portion can be provided without using both the mounting bolt 7a and the positioning portion.

  FIG. 3 illustrates another embodiment of the supply device 1. In this embodiment, a plurality of the supply units 2 described above are installed on the rotating plate 10. The rotating plate 10 has a structure that rotates about a rotating shaft 10a. The supply unit 2 installed on the rotating plate 10 is not limited to two, and can be any plural number.

  In this embodiment, a large number of bead members B are stocked in a flat state in each supply unit 2, and one supply unit 2 (the supply unit 2 on the left side in FIG. ) And the bead member B is taken out and supplied to another process. As illustrated in FIG. 4, when the bead member B stocked in one supply unit 2 becomes empty, the rotation plate 10 is rotated around the rotation shaft 10a to rotate the other supply unit. 2 is moved to the supply position where the bead member B is taken out.

  Next, as illustrated in FIG. 5, the bead member B is taken out from the supply unit 2 newly moved to the supply position and supplied to another process. At that time, one supply unit 2 in which the bead member B is empty is replenished with a new bead member B by the same procedure as in the above-described embodiment.

  According to this embodiment, since the bead member B can be replenished with respect to the supply unit 2 different from the supply unit 2 which supplies the bead member B to another process, the bead member B is not interrupted. It becomes possible to supply continuously. Then, it is possible to easily change the stage by simply rotating the rotating plate 10. In addition, since the work of replenishing the bead member B can be performed during the spare time of the worker, the degree of freedom in process design is increased.

It is a top view which illustrates the supply device of the bead member of the present invention. It is a side view which illustrates the supply apparatus of the bead member of FIG. 1 which is supplying the bead member. It is a top view which illustrates another embodiment of a supply device of a bead member. It is a top view which illustrates the state where the bead member of one supply unit of Drawing 3 became empty. It is a top view which illustrates the state where the new bead member is replenished to the supply unit where the bead member became empty.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Supply apparatus of bead member 2 Supply unit 3 Upper pulley 4 Lower pulley 5 Chain (conveyance means)
6 Prop 7 Receiving plate 7a Positioning part (Mounting bolt)
8 Drive motor 8a Drive chain 8b Shaft 9 Gear box 10 Rotating plate 10a Rotating shaft 11 Transfer machine 11a Claw part B Bead member

Claims (4)

  A plurality of conveying means mounted between a pair of upper and lower pulleys are provided, a plurality of receiving plates are attached to each conveying means at the same predetermined interval in the vertical direction, and the individual receiving plates of each conveying means have the same height. The feeding unit is configured by setting up so that the receiving plates attached to the respective conveying means are moved up and down in synchronism, and is arranged at the same height position of the respective conveying means. A bead member supply device for placing a bead member on a receiving plate in a flat state.   The bead member supply device according to claim 1, wherein each of the conveying units is disposed in an inner peripheral region of the bead member that is placed flat on the receiving plate.   The bead member supply device according to claim 1, wherein a plurality of the supply units are provided, and the supply units are arranged on a rotating plate.   The apparatus for supplying a bead member according to any one of claims 1 to 3, wherein the receiving plate is provided with a positioning portion for positioning the bead member by contacting an inner peripheral surface of the bead member placed in a flat state.

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