JP2007038564A - Cutter of strip-like member - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To certainly cut a strip-like member along the end part in the axial direction of a reinforcing member. <P>SOLUTION: Since the cutter 10, which is brought into contact with a lower roll 1 from the outside in its diametric direction to cut the strip-like member SE in its longitudinal direction, is supported on the support shaft 20 so as to be movable in the width direction of the strip-like member SE and downward inclined toward the inside in the width direction of the strip-like member SE from the outside, the cutter 10 is moved toward the inside from the outside in the width direction of the strip-like member SE under its own weight and regulated in its movement to the inside in the width direction of the strip-like member by the end part of the reinforcing member TC in its width direction to move the strip-like member SE in the width direction of the strip-like member SE corresponding to a change in the width direction of the reinforcing member TC or the displacement at the position in the width direction of the reinforcing member TC. Accordingly, the strip-like member SE is cut along the end part in the width direction of the reinforcing member TC, and the production cost of the cutter is reduced while its durability is enhanced. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention, for example, in a manufacturing process of a pneumatic tire for automobiles, by cutting a belt-like member formed by coating a belt-like reinforcing member with unvulcanized rubber in the longitudinal direction along the widthwise end of the reinforcing member. The present invention relates to a strip-shaped member cutting device for forming a long carcass member having a width dimension corresponding to a reinforcing member.

Generally, as a strip member cutting device for cutting a strip member containing a reinforcement member in the length direction, a detector that detects the position of the end portion in the width direction of the reinforcement member immediately before being covered with unvulcanized rubber, A pair of cutters that are provided below the belt-like member conveyed in the vertical direction and cut the belt-like member in the length direction, a moving mechanism that can move each cutter in the width direction of the belt-like member, and a detection result by the detector And a control device that controls the moving mechanism according to the width of the reinforcing member in accordance with the width of the reinforcing member, the cutter is moved in the width direction of the belt in accordance with the change in the width dimension of the reinforcing member and the displacement of the position in the width direction. What cut | disconnected along the part is known (for example, refer patent document 1).
JP-A-8-156132

  However, the above-described cutting apparatus requires a detector, a moving mechanism, and a control device, so that the apparatus becomes complicated and the manufacturing cost of the apparatus itself is high.

  Further, since the cutting of the sheet-like member is performed in a high temperature atmosphere, there is a problem that a detector and a control device, which are precision electronic devices, become high temperature and are likely to fail.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to cut a belt-shaped member that can reliably cut the belt-shaped member along the widthwise end portion of the reinforcing member with a simple configuration. To provide an apparatus.

  In order to achieve the above-mentioned object, the present invention provides a strip-shaped member cutting apparatus for cutting a strip-shaped member formed by coating a strip-shaped reinforcing member with unvulcanized rubber in the longitudinal direction along the widthwise end of the reinforcing member. A cutter that abuts the roll wound around the roll in a predetermined range in the circumferential direction from the outside in the radial direction and cuts the belt-like member wound around the roll in the length direction; and a belt-like member wound around the roll. A support member that is provided so as to incline downward from the outer side in the width direction and supports the cutter so as to be movable in the width direction of the belt-like member along the incline.

  Thus, the cutter is supported by the support member so as to be movable in the width direction of the belt-shaped member, and the support member is inclined downward from the width-direction outer side to the inner side of the belt-shaped member. The cutter that abuts from above and cuts the belt-shaped member in the length direction moves from the outside in the width direction of the belt-shaped member toward the inside by its own weight. Moreover, since a strip | belt-shaped member has a reinforcing member, a cutter is controlled by the width direction edge part of a reinforcing member to the movement to the width direction inner side of a strip | belt-shaped member.

  According to the present invention, the cutter can be moved from the outer side in the width direction of the belt-shaped member toward the inner side by its own weight, and the movement of the band-shaped member in the width direction inner side can be regulated by the end portion in the width direction of the reinforcing member. Therefore, the cutter can be moved in the width direction of the band-shaped member in accordance with the change in the width dimension of the reinforcing member or the displacement in the width direction, and the band-shaped member can be moved along the width direction end of the reinforcing member with a simple configuration. It can be cut reliably.

  1 to 4 show an embodiment of the present invention. FIG. 1 is a perspective view of a roll provided with a cutting device, FIG. 2 is a side view of the roll provided with the cutting device, and FIG. 3 is a cutting device. FIG. 4 is a front view of a main part of the roll provided with the cutting device.

  The strip-shaped member cutting device according to the present embodiment includes a pair of cutters 10 that can come into contact with the lower roll 1 from among the pair of upper and lower rolls 1 that are spaced apart from each other, and each cutter 10. A support shaft 20 is provided as a pair of support members for supporting each.

  Each roll 1 has a cylindrical shape and is arranged so that the outer peripheral surfaces thereof face each other. In addition, a long reinforcing member TC composed of a plurality of reinforcing cords arranged in the width direction of each roll 1 is disposed between each roll 1, and the reinforcing member TC has a predetermined direction from one to the other in the length direction. Transported at speed. Each roll 1 rotates in the conveying direction of the reinforcing member TC. The unvulcanized rubber MR is supplied to one side in the length direction of the reinforcing member TC in each roll 1, and the supplied unvulcanized rubber MR and the reinforcing member TC pass between the rolls 1, thereby reinforcing the reinforcing member. TC is coated with unvulcanized rubber MR. That is, the strip-shaped member SE containing the reinforcing member TC is formed by each roll 1. Here, since the entire surface of the reinforcing member TC is covered with the unvulcanized rubber MR, the belt-like member SE is formed with a larger width dimension than the reinforcing member TC. For this reason, the excess rubber part SER is shape | molded at the width direction both ends of strip | belt-shaped member SE. The belt-like member SE that has passed between the rolls 1 is wound around the lower roll by a predetermined range in the circumferential direction, and then conveyed downward.

  The cutter 10 has a blade portion 11 whose tip is in contact with the lower roll 1 from the outside in the radial direction, and a holder 12 that supports the base end portion of the blade portion 11. The blade portion 11 is made of a metal material, and the tip is formed in an acute angle shape. The holder 12 is provided with a ball bush 12a.

  The support shaft 20 is a columnar member extending in the width direction of the strip member SE wound around the lower roll 1, and is inclined downward from the outside in the width direction of the strip member SE wound around the roll 1 to the inside. is doing. The support shaft 20 supports the holder 12 via a ball bush 12a. Therefore, the holder 12 is supported by the support shaft 20 so as to be movable in the axial direction. That is, the cutter 10 is supported by the support shaft 20 so as to be movable in the width direction of the strip member SE. A stopper 21 is provided on the inside of the support shaft 20 in the width direction of the belt-like member SE, and the stopper 21 has an outer diameter larger than that of the support shaft 20. That is, the movement range of the cutter 10 is regulated by the stopper 21. The support shaft 20 is supported by the support block 22 on the outer side in the width direction of the belt-like member SE, and the support block 22 can adjust the vertical and horizontal tilt angles of the support shaft 20. The support block 22 is fixed to the frame 23, and the frame 23 is the same as the frame that supports each roll 1.

  The band-shaped member cutting device configured as described above has the band-shaped member wound around the lower roll 1 by bringing the blade portion 11 of each cutter 10 into contact with the lower roll 1 from the outside in the radial direction. Cut the SE in the length direction. Here, the cutter 10 is supported by the support shaft 20 so as to be movable in the width direction of the strip member SE, and the support shaft 20 is inclined downward from the outside in the width direction of the strip member SE to the inside. The cutter 10 moves from the outer side in the width direction of the strip member SE toward the inner side by its own weight. On the other hand, since the strip member SE has the reinforcing member TC, the cutter 10 is restricted from moving inward in the width direction of the strip member by the width direction end portion of the reinforcing member TC. Thereby, the cutter 10 moves in the width direction of the strip member SE in accordance with the change in the width direction of the reinforcing member TC and the displacement in the width direction position. The surplus rubber SER cut by each cutter 10 is supplied again between the rolls 1 by an auxiliary roller (not shown).

  Thus, according to the present embodiment, the cutter 10 that contacts the lower roll 1 from the outside in the radial direction and cuts the strip member SE in the length direction is movable on the support shaft 20 in the width direction of the strip member SE. Since the support shaft 20 is inclined downward from the outer side in the width direction of the belt-like member SE to the inner side, the cutter 10 moves from the outer side in the width direction of the belt-like member SE toward the inner side by its own weight, and is reinforced. The movement of the band-shaped member toward the inner side in the width direction is restricted by the end in the width direction of the member TC, and the band-shaped member SE moves in the width direction in accordance with the change in the width direction of the reinforcing member TC or the displacement in the width direction position. Therefore, the strip member SE can be reliably cut along the width direction end portion of the reinforcing member TC with a simple configuration, and the manufacturing cost and the durability of the cutting device can be reduced.

  Further, since the configuration of the apparatus can be simplified, it is advantageous in that a work space for performing the work of bringing the cutters 10 into contact with the rolls 10 can be secured. Furthermore, since the configuration of the apparatus can be simplified, it is advantageous in that the apparatus can be easily maintained and the time required for maintenance can be shortened.

  Further, each cutter 10 is brought into contact with the lower roll 1 among the rolls 1 for forming the belt-like member SE from the outside in the radial direction, and the belt-like member SE wound around the lower roll 1 is cut. Therefore, there is no need to provide a dedicated roller for contacting each cutter 10 in order to cut the strip member SE, which is extremely advantageous in reducing the manufacturing cost.

  In addition, since the support shaft 20 is provided so as to be inclined downward from the outer side in the width direction of the belt-like member and the cutter is provided so as to be movable in the axial direction of the support shaft, the configuration of the apparatus becomes simpler and manufactured. This is extremely advantageous for reducing the cost.

The perspective view of the roll provided with the cutting device which shows one Embodiment in this invention Side view of a roll provided with a cutting device Front view of a roll provided with a cutting device Front view of main part of roll provided with cutting device

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Roll, 10 ... Cutter, 11 ... Blade part, 12 ... Holder, 12a ... Ball bushing, 20 ... Support shaft, 21 ... Shaft, 21a ... Stopper, 22 ... Shaft support part, 23 ... Frame, TC ... Reinforcement member, MR: unvulcanized rubber, SE: strip member, SER: surplus rubber.

Claims (3)

In the strip-shaped member cutting device for cutting the strip-shaped member formed by coating the strip-shaped reinforcing member with unvulcanized rubber in the length direction along the widthwise end of the reinforcing member,
A cutter that abuts the roll wound around the roll in a predetermined range in the circumferential direction from the outside in the radial direction and cuts the belt-like member wound around the roll in the length direction;
A support member that is provided so as to incline downward from the outside in the width direction of the belt-like member wound around the roll, and supports the cutter so as to be movable in the width direction of the belt-like member along the inclination. A strip-shaped member cutting device. The cutter is provided so as to cut a belt-like member wound around one of a pair of unvulcanized rubber coating rolls provided on both sides in the thickness direction of the reinforcing member. The strip-shaped member cutting device according to claim 1. The support member is composed of a support shaft inclined downward from the outer side in the width direction of the belt-like member wound around the roll, and the cutter is attached to the support shaft so as to be movable in the axial direction. The strip-shaped member cutting device according to claim 1 or 2.

Images