JP2014124924A - Ear part removing device for tire sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an ear part removing device for a tire sheet which is compact and in which ear part removing operation for a tire sheet can be automatized, without continuous pulling operation of an operator and without line stop.SOLUTION: An ear part removing device for a tire sheet, which is mounted at a bias device for transporting the tire sheet and cutting the tire sheet by a bias cutter and is for cutting and removing ear parts formed on both edge parts of the tire sheet, includes a cutter for cutting the ear parts during transportation of the tire sheet, and removing means for removing the ear parts from the tire sheet by dropping the cut ear parts downward by dead weight of the ear parts through an opening formed on the way of a transportation path of the ear part. The cutter and the removing means are mounted in the vicinity of the upstream side of the bias cutter.

Description

  The present invention relates to an ear part excision device for a tire sheet that cuts and removes an ear part formed on a tire sheet that is a raw material of a reinforcing member such as a carcass ply, a belt ply, and a bead reinforcement ply.

  In a pneumatic tire, various reinforcing members reinforced with a ply (tire) cord such as a carcass ply, a belt ply, and a bead reinforcing ply are used.

  As shown in FIG. 5A, such a reinforcing member is generally produced as a long and wide original fabric by rubber-covering an array b in which a plurality of ply cords a are arranged in parallel. After the tire sheet (topping anti-c) c is cut using a bias cutter, as shown in FIG. 5B, it is produced by joining the non-cut edges d1 of the cut pieces d.

  However, when the array body b is covered with rubber in the production of the tire sheet c, as shown in FIG. 6, ears c1 in which rubber protrudes from the outermost ply cord a1 are formed on both side edges of the tire sheet c. Is done. Prior to cutting by the bias cutter, the ear c1 is cut away leaving the joint portion jg (for example, Patent Document 1).

  Conventionally, the cutting operation of the ear portion c1 has been cut at a predetermined position of the ear portion c1 of the tire seat c using a cutter, and is arranged below the bias device in accordance with the feeding of the tire seat c. This is done by the operator pulling and removing the cut ear c1.

  On the other hand, a movable winding device is disposed below the bias cutter, and the cut ear c1 is automatically wound and removed. However, in the case of this method, it is necessary to secure a sufficient space such as a storage place for the winding device and a position below the bias cutter, so that it is difficult to make the line compact, and the mobile type Therefore, it is difficult to start excision work easily in a short time. When the ear c1 is wound to some extent by the winding device, it is necessary to stop the line and collect the ear c1 from the winding device, so that it is difficult to automate from the start to the end of the excision work. .

JP 2008-114548 A

  The present invention provides an ear cutting device for a tire seat that is compact without an operator always pulling, and that can automate the cutting operation of the ear of a tire seat without stopping the line. The task is to do.

The invention described in claim 1
For tires that are provided in a biasing device that transports a tire sheet coated with a plurality of ply cords and cut with a bias cutter, and cuts and removes the ears formed on both side edges of the tire sheet A device for resecting the ear of a sheet,
A cutter that cuts the ear from the tire sheet during conveyance of the tire sheet;
Removing means for dropping the ear portion from the tire seat by dropping the cut ear portion downward from an opening formed on a transport path of the ear portion by the weight of the ear portion; With
An ear cutting device for a tire seat, wherein the cutter and the removing means are provided in the vicinity of the upstream side of the bias cutter.

The invention described in claim 2
The removal means is configured to guide the cut-off ear part downward from the opening by a pair of guide rollers, and to drop by the dead weight of the ear part. It is an ear | edge part excision apparatus of the tire sheet | seat of description.

The invention according to claim 3
The ear part excision device for a tire seat according to claim 2, wherein at least one surface of the pair of guide rollers is knurled.

The invention according to claim 4
The ear part excision device for a tire seat according to claim 2 or 3, wherein a star roller is disposed below at least one of the pair of guide rollers.

  According to the present invention, a tire seat ear excision device that is compact without requiring the operator to always perform a pulling operation, and that can automate the excision operation of the ear portion of the tire seat without stopping the line. Can be provided.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a plan view schematically showing a bias device provided with a tire sheet ear cutting device according to an embodiment of the present invention. It is (a), (b) top view and (c) side view which show an example of a structure of a removal means. It is a front view which shows an example of a guide roller typically. It is the front view and side view which show an example of a star roller. It is a top view explaining the manufacturing method of a reinforcement member. It is a side view explaining the ear | edge part of the sheet | seat for tires.

  Hereinafter, the present invention will be described with reference to the drawings based on embodiments.

  FIG. 1 is a plan view schematically showing a bias device provided with an ear cutting device for a tire seat according to the present embodiment. In FIG. 1, the tire sheet c is conveyed in the direction of the arrow.

  As shown in FIG. 1, the ear part excision device according to the present embodiment includes a cutter 12 that cuts the ear part c1 from the tire sheet c and the cut ear part c1 during the conveyance of the tire sheet c. And a removing means 11 for dropping the ear part c1 from the tire sheet c by dropping by the weight of the ear part c1 downward from the opening formed on the conveying path of the ear part c1, and a cutter 12 and The removing means 11 is provided in the vicinity of the upstream side of the bias cutter 13 of the bias device 1.

  FIG. 2 is a diagram illustrating a configuration of the removing unit 11. 2A is a plan view of the removing unit 11, FIG. 2B is a plan view of the removing unit 11 with a guide roller R1 to be described later removed, and FIG. 2C is a side view.

  As shown in FIG. 2, the removing unit 11 is provided in the opening 116, and includes a pair of guide rollers R <b> 1 and R <b> 2 and a driving unit M. Each member of the removing means 11 is attached to the plate 112 and accommodated in the cover 114.

  The guide rollers R1 and R2 are arranged to face each other. As shown in FIG. 2C, the upstream guide roller R1 rotates clockwise, and the downstream guide roller R2 rotates counterclockwise. The guide roller R2 is rotated by a belt B1 spanned between the driving means M. By the rotation of the pair of guide rollers R1 and R2, the ear c1 is guided downward from the opening 116 and falls due to its own weight.

  The ear c1 dropped downward from the opening 116 is accommodated in a collecting container (not shown), and then appropriately discarded without stopping the line.

  On the other hand, the main body portion c2 of the tire seat c after the ear portion c1 is cut off is cut by the bias cutter 13 in the same manner as in the prior art, and then a reinforcing member is manufactured.

  As described above, according to the present embodiment, it is not necessary for the operator to always perform a pulling operation or to remove the ear portion c1 wound from the winding device by stopping the line as in the prior art. Therefore, it is possible to easily automate from the start to the end of the excision work of the ear c1 of the tire sheet c.

  Since the ear excision device according to the present embodiment is provided in the vicinity of the upstream side of the bias cutter 13, it can be reduced in size compared with the conventional mobile winding device, and it is necessary to secure a wide installation space. Absent. Moreover, it is not necessary to secure a storage place. As a result, the production line can be made compact.

  In addition, since the ear excision device according to the present embodiment is not mobile as in the prior art, when starting the ear excision work, it is not necessary to transfer the winding device or set up the installation, and the equipment can be installed in a short time. Can be operated.

  Note that at least one surface of the guide rollers R1 and R2 is preferably subjected to knurling as shown in FIG. This makes it difficult for the ear c1 to adhere to the surfaces of the guide rollers R1 and R2, so that the ear c1 is prevented from being wrapped around the guide rollers R1 and R2, and the ear c1 that has been cut more stably is moved downward. Can be dropped.

  Further, it is preferable that a star roller (patal roll) R3 is disposed below the upstream guide roller R1, as shown in FIGS. A belt B2 is stretched between the upstream guide roller R1 and the star roller R3, and the star roller R3 is the same as the upstream guide roller R1 as indicated by the arrow in FIG. Rotate in the direction.

  FIG. 4 is a front view (a) and a side view (b) showing the shape of the star roller R3. The star roller R3 includes a rotating shaft and a plurality of ridges (six in FIG. 4) provided radially around the rotating shaft.

  When the ear c1 is in close contact with the surface of the guide roller R1 due to the protrusion of the star roller R3 rotating in the same direction as the upstream guide roller R1, the ear c1 can be peeled off from the guide roller R1. For this reason, it is possible to further prevent the ear c1 from being wrapped around the guide roller R1, and to more stably drop the ear c1 downward.

  The star roller R3 is preferably disposed below the upstream guide roller R1, but may be disposed below the downstream guide roller R2, and both of the guide rollers R1 and R2 may be disposed as necessary. You may arrange | position below.

  Further, as the driving means M, it is preferable to use a low torque motor from the viewpoint that it is not necessary to use a complicated control device.

  While the present invention has been described based on the embodiments, the present invention is not limited to the above embodiments. Various modifications can be made to the above-described embodiments within the same and equivalent scope as the present invention.

DESCRIPTION OF SYMBOLS 1 Bias apparatus 11 Removal means 12 Cutter 13 Bias cutter 112 Plate 114 Cover 116 Opening part B1, B2 Belt M Drive means R1, R2 Guide roller R3 Star roller (patal roll)
a, a1 ply cord b array c tire sheet (anti-topping)
c1 ear part c2 body part d cut piece d1 non-cut edge jg joint part

Claims (4)

For tires that are provided in a biasing device that transports a tire sheet coated with a plurality of ply cords and cut with a bias cutter, and cuts and removes the ears formed on both side edges of the tire sheet A device for resecting the ear of a sheet,
A cutter that cuts the ear from the tire sheet during conveyance of the tire sheet;
Removing means for dropping the ear portion from the tire seat by dropping the cut ear portion downward from an opening formed on a transport path of the ear portion by the weight of the ear portion; With
An ear cutting device for a tire seat, wherein the cutter and the removing means are provided in the vicinity of the upstream side of the bias cutter.   The removal means is configured to guide the cut-off ear part downward from the opening by a pair of guide rollers, and to drop by the dead weight of the ear part. The ear | edge part excision apparatus of the tire sheet | seat of description.   The ear cutting device for a tire seat according to claim 2, wherein at least one surface of the pair of guide rollers is knurled.   The ear part cutting device for a tire seat according to claim 2 or 3, wherein a star roller is disposed below at least one of the pair of guide rollers.

Images