JPH0688357B2 - Let-off device for bias cutter - Google Patents

Description

TECHNICAL FIELD The present invention relates to a bias cutoff device for a bias cutter.

[Conventional technology]

The conventional let-off device has a structure as shown in FIG. 5, in which 01 is a stock roll in which a material to be cut (hereinafter referred to as a fabric) is wound in a roll form together with a liner for preventing fabric adhesion. is there. A liner take-up roll 05 is rotated in the direction of the arrow by a motor (not shown). When the liner 02 is wound up via the roller 04, the fabric 03 is inevitably taken out and the liner 02
It is sent to the other side directly on the roller 05 by a different route.

Next, the fabric 03 is sent to the conveyer 08 through the fixed roller 06 and the dancer roller (free vertical movement) 07.

The fabric 03 sent from the carrying conveyor 08 of the let-off device is sent to the cutting section by the cutting device carrying conveyor 09. When a new stock roll is supplied, the leading end of the fabric in the stock roll needs to be guided along the above path, but this introduction work is all performed manually by the operator.

[Problems to be Solved by the Invention] Problems when manually mounting the fabric and the liner to the let-off device are (1) the fabric is wide and thin, and the raw rubber is sticky and easily wrinkles. It is difficult to handle because it is easy to pick each other.

(Width = about 1500 mm, thickness = about 1 mm, unvulcanized rubber) (2) The space of the let-off device is small and workability is poor.

(3) Since the problems of the above-mentioned items 1 and 2 are combined, it takes a long time for mounting.

[Means for solving problems]

In order to facilitate the installation of the fabric and liner and to shorten the time, the conventional fixed roller is used as a movable swing type roll to automate the delivery of the fabric.

The swing type roll is provided with a roll rotating device for feeding a pinch roll for sandwiching a fabric.

Also, the dancer roll is equipped with a lifting drive device instead of the conventional self-weight drop type to automate the lifting and lowering of the dancer roll.

[Action]

When the stock rolls are replaced, the liner stripping roll separates the fabric and the liner, and the fabric is sent out from the transport conveyor via a swing type fabric transport roll and a dancer roll whose height position can be adjusted.

〔Example〕

In FIG. 1, 1 is a stock roll driven by a motor 1a, 2 and 3 are liners and fabrics wound around the stock roll 1, and 5 is a liner take-up roll driven by a motor (not shown). Rolls are pivotally supported in fixed positions. Reference numeral 4 denotes a liner peeling roll, which swings around a swing shaft 4a by a cylinder (not shown). Reference numeral 9 denotes a pinch roll, which can be pushed down or pulled up by the swing roll 6 by a cylinder (not shown). The swing roll 6 can be rotated in conjunction with the liner take-up roll 5, the edge can be cut by a clutch, and the rotation can be locked by a brake. The rolls 6, 9 incorporated in a pair have a swing shaft 6a at the lower left of a lever that pivotally supports these rolls 6, 9.
A cylinder (not shown) can swing to the left. The dancer roll 7 can be raised and lowered by a geared motor,
In addition, the clutch (not shown) can be separated to make it free, and the weight drop method can be used. The swing roll 8 is swung by a rotary actuator 12 and can move to a position almost directly above the actuator 12. Reference numeral 10 is a conveyor for taking out the fabric.

Next, the operation will be described.

(1) As shown in FIG. 1, the liner 2 which is wound around the stock roll 1 in excess of the fabric is wound around the roll 5 and rotated by a motor two or three times.

(2) Roll 4 Move to.

(3) When the roll 5 is rotated again, the stock roll 1 rotates while the liner 2 is being wound, and the fabric 3 closely attached to the liner 2 appears.

(4) Peel off fabric 3 from liner 2 and roll 4
Passing between the swing roll 6 and the pinch roll 9 via the roll 5 without passing through the roll 5, the rotation of the roll 5 is stopped at a position where it passes between the rolls 6 and 9.

(5) Supply high pressure air to the cylinder of the pinch roll 9, push down the pinch roll 9, sandwich the fabric 3 between the swing roll 6 and the pinch roll 9, and simultaneously brake so that the swing roll 6 does not reverse. multiply.

(6) Swing roll 6 shown in FIG. At the same time sending low pressure air to the cylinder to move to
When the roll 5 is rotated, the tip of the fabric 3 is pinched by the swing roll 6 and the pinch roll 9. The swing roll 6 is not rotated at this time.

(7) Upon arrival, the push-down cylinder of the pinch roll 9 changes from a high pressure to a low pressure, and the swing cylinder of the swing roll 6 changes from a low pressure to a high pressure. To rotate the fabric 3 and send the fabric 3 onto the conveyor 10. The conveyor 10 has the leading end of the fabric 3 It is driving at the same time as reaching the position.

(8) The fabric 3 on the transfer conveyor 10 is almost When the position reaches, the rotation of the liner winding roll 5 is stopped, and the rotation of the swing roll 6 is inevitably stopped.

(9) Swing roll 8 shown in FIG. From the position The position is moved to the position, and at this time, the transport conveyor 10 is driven.

(10) Stop the transport conveyor 10, push down the pinch roll 13 with the cylinder, sandwich the fabric 3 between the transport conveyor 10, and at the same time pull up the pinch roll 9 to rotate the swing roll 6 in conjunction with the take-up roll 5. The movement is cut by the clutch.

(11) The dancer roll 7 is driven by the motor 15. , Cut the clutch there and cut the edge with the motor 15 to free up and down movement.

(12) In FIG. 4, when the take-up roll 5 is rotated, the fabric 3 is sent out, and the dancer roll is When it is lowered to the lower limit position, the rotation of the take-up roll 5 is automatically stopped by a sensor (not shown), and the fabric attachment is completed.

In the above operation, after the fifth item, the operator does not have to touch the fabric 3, and only the push button operation is required. Further, although the pinch roll 9 is provided in the above description, if a frictional force that prevents the swing roll 6 and the fabric 3 from slipping is obtained (for example, the adhesive force of the fabric 3 is strong and the swing roll 6 is a rubber lining roll, etc.). The pinch roll 9 can be omitted if no slipping is caused by the process (1).

〔The invention's effect〕

Since the leading end of the fabric block, which has poor workability, is sandwiched between the swing roll and the pinch roll, and the fabric can be passed through only by pushing the push button, the operator can
According to the present invention, what was required by three persons is improved by one person,
Labor can be saved and worker safety is improved. Furthermore, the time required for mounting can be reduced.

[Brief description of drawings]

1 to 4 are schematic views for explaining the work sequence in an embodiment of the bias cutoff device according to the present invention, and FIG. 5 is a schematic view for a conventional device. 1 ... stock roll, 2 ... liner 3 ... fabrication, 5 ... liner winding roll 6 ... swing roll, 7 ... dancer roll 8 ... swing roll, 10 ... transport conveyor

Claims (1)

[Claims] 1. A stock roll in which a raw rubber-coated fabric is wound together with a liner in a roll shape, a liner take-up roll for winding the liner from the stock roll and feeding only the fabric, and a conveyer for conveying the liner through a dancer roll. A let-off device for a bias cutter, characterized in that it comprises a swing roll to be sent to.