JPS62285851A - Band material drawout device - Google Patents

Abstract

PURPOSE:To run a drawout roll and a transfer conveyor in synchronized continuous operation by driving the drawout roll and a liner takeup shaft synchronously, mounting a friction clutch on the liner takeup shaft concentrically, and thereby absorbing increased liner takeup speed. CONSTITUTION:A band-shaped tread 1 is wound up on a stock reel 3 with a liner 2 interposed. A drawout roll 7 to draw out a string of treads 1 from said stock reel 3 together with liner 2 is supported at the front of a mount table 8, and coupled with a geared motor. The liner drawn out by this drawout roll 7 and defoliated is wound on a liner takeup shaft 24, on which a friction clutch is mounted, and the drawout roll 7 and takeup shaft 24 are driven synchronously. According to this construction the friction clutch assures syncronization of the liner takeup speed with the tread drawout speed of the drawout roll at all times even when the liner takeup shaft 24 increases its takeup diameter, which should enable continuous operation.

Description

DETAILED DESCRIPTION OF THE INVENTION 3. Detailed Description of the Invention (Field of Industrial Application) The present invention relates to an improvement in a device for automatically pulling out a strip of material together with a liner from a stock reel of a tire tread, for example.

(Prior art) Conventionally, as the first mechanism of a device that automatically supplies strip tread to the former of a tire molding machine, a roll and a drive source that are not driven are placed in front of a stock reel that is rotatably mounted on a frame. A liner winding shaft is installed in parallel, and the liner winding shaft is driven and rotated to pull out the liner from the trend stock reel via a guide roll and wind it up, thereby automatically pulling out the tread and passing it to the adjacent transfer conveyor. A tread pulling device is used that automatically feeds the tread to the forming former.

(Problems to be Solved by the Present Invention) In the conventional tread pulling device described above, as the winding diameter of the liner winding shaft increases, the winding speed increases, and the speed of the winding conveyor and the free roll increase. In order to absorb the difference between the liner winding speed, that is, the liner and tread withdrawal speed, and the transfer conveyor speed, a festoon of the tread is formed before passing the tread onto the transfer conveyor. This increases equipment costs, requires additional floor space, causes the tread to deform in the festoon mechanism and changes the tread dimensions, makes it difficult to center the tread relative to the transfer conveyor, and furthermore, the festoon mechanism requires intermittent treads. The problem is that all you can do is drive.

(Means for Solving the Problems) In order to solve the above-mentioned problems, the configuration of the present invention includes a belt-shaped material stock reel which is rotatably mounted on a frame and winds up a belt-shaped material together with a liner, a drawer roll that is rotatably supported in front of the material stock reel and pulls out a series of strip materials together with a liner from the stock reel; a grip roll that is supported on the drawer roll so as to be able to be pressed and removed; and a grip roll that is supported on the pedestal and that is A liner winding shaft that winds up the liner pulled out by the roll and peeled off from the strip material, a friction clutch provided coaxially with the winding shaft, and a drive device that synchronously drives the pull-out roll and the liner winding shaft. Further, in addition to this configuration, a brake shaft is provided on the strip material stock reel coaxially with the reel, a brake is attached to one end of the brake shaft, and a brake is attached to the other end of the brake shaft. It is characterized by being equipped with a clutch.

(Function) According to the above-described structure, even if the winding diameter of the liner winding shaft increases, the difference between the liner take-up speed and the liner and trend pull-out speed is automatically absorbed by the friction clutch, and the tread of the pull-out roll is The withdrawal speed and the liner winding speed, as well as the transfer speed of the transfer conveyor, are always synchronized, allowing continuous driving of the withdrawal roll and transfer conveyor.

(Example) The present invention will be described in detail below with reference to the drawings by way of an example of a tread pulling device.

In FIG. 1, which is a front view, and FIG. 2, which is a plan view, of the tread pulling device, a series of band-like trends 1 are wound onto a stock reel 3 via a liner 2, and the stock reel 3 has its reel boss 4. The rails 5 on the frame 8 are moved, and the pair of supports are detachably and rotatably mounted on the rolls 6. The stock reel 3 itself does not have a driving source, and is rotated by the tension of the liner 2 as the tread 1 is pulled out by the pull-out roll 7. The roll 6 is attached to the upper part of the frame 8 by a support, and is rotated as the stock reel 3 rotates.

Further, this receiver has a stepped structure such that the roll 6 matches the end surface of the reel boss 4 in order to prevent the stock reel 3 from wobbling during rotation.

A rubber pull-out roll 7 that pulls out a series of strip-shaped treads 1 together with a liner 2 from a stock reel 3 is supported at the front of the pedestal 8, and is driven by a geared motor 9 as a driving source.
are connected by a chain.

In FIG. 2, a brake shaft 10 is slidably supported coaxially with the reel boss 4 on one side of the pedestal 8, and a split brake 11 is supported at one end of the brake shaft 1o.

In FIG. 3, which shows a cross section of the brake 11, the brake wheel 12 is fixed to the brake shaft 10 by a key 13. A fastener 14 surrounds the brake wheel 12, a lining 15 is glued to the fastener 14, and one end of the fastener 14 is supported by a bottle 15 on the brake wheel 12 so as to be openable and closable. , a lining 15 and a brake wheel 1 are attached to the other end of the fastener 14.
Bolt 16.2 to adjust the frictional force with 2. Natsu 17
．． comprising an inner spring 18 and one outer spring,
Tightening the nut 17 increases the frictional force, and heating it up decreases it. In FIG. 2, a clutch 20 is attached to the other end of the brake shaft 11.

By operating an operating lever 22 pivotally connected to the frame 8 by a support bin 21, the craft 20 moves in the direction of the arrow with the support bin 21 as a fulcrum, and when connected to the reel boss 4, a brake is applied to the stock reel 3, and the reel boss The brake is designed to release when released from 4. Connect the clutch 20 to the reel boss 4 and connect the brake 11
The tread and liner 2 are pulled out from the stock reel 3 by the pull-out roll 7 while the liner 2 is constantly working, and the rotation of the stock reel 3 is also stopped as soon as the rotation of the pull-out roll 7 stops. It is possible to prevent the trend l from hanging down between the stock reel 3 and the drawer roll 7.

A rubber grip roller 23 and a liner winding shaft 2 are provided at the front of the frame 8 adjacent to the drawer roll 7.
4 is supported on a pedestal 8. A friction clutch 25 installed coaxially with the liner winding shaft 24
is connected to the gear motor 9 by a chain.

The liner 2 peeled off from the trend 1 on the pull-out roll 7 passes through a grip roll 23 and is wound up on a box pivotally connected to a liner winding shaft 24 that rotates in two directions opposite to the pull-out roll 7. Since the pull-out roll 7 and the liner winding shaft 24 are driven by the same gear motor 9, their rotational speed is the same, but the diameter of the box attached to the liner wind-up shaft 24 is set to be equal to or greater than the diameter of the pull-out roll. Furthermore, since the liner winding diameter increases as the liner is wound, the liner winding speed always exceeds the tread and liner withdrawal speed. The liner drawn out from the drawing roll 18 is always in a constant state of tension ( In other words, the liner winding speed is synchronized with the drawing speed of the drawing roll, and thus with the drawing speed of the drawing conveyor.

The grip roll 23 is pressed onto or released from the pull-out roll 7 by the operation of the cylinder 26, and is used when the liner 2 is first wound around the liner winding shaft 24 and when the stock reel 3 is not set on the roll 6. Normally, the liner 2 and trend 1 are crimped onto the pull-out roll 7 to overcome the braking force of the brake 4 of the stock reel 3 and to pull out the liner 2 and the trend 1. This overcomes the liner winding shaft and allows the rotational speed to decrease.

EPC is placed on the center line at the rear of transfer conveyor 27.
(a line follower type terminal position control device consisting of a phototube, a logic circuit, and a cylinder drive device) 28 is supported independently of the pedestal 8, while a centering cylinder 29 is directly connected to the pedestal 8 by a link mechanism. 8 is mounted on a pair of centering rails 31 arranged on the floor via wheels 30 at the bottom. When the EPC 28 detects a deviation between the center line of the tread 1 pulled out at a constant speed by the pull-out roll 7 and the center line of the transfer conveyor 27, the centering cylinder 29 is actuated to move the entire tread pull-out device to move the tread 1 at an appropriate speed. The tread 1 is moved in a direction perpendicular to the traveling direction of the tread 1, and is centered before the tread 1 is transferred to the transfer conveyor 27. One tread support roll 32 fixed to a frame is arranged at the front and rear of the EPC 34 to support the pulled-out tread 1 so as not to contact the RPC 28, and to move together with the pull-out device during centering to perform centering and the transfer conveyor 27. Facilitate the transfer to

A transfer conveyor 27, which functions to further draw out the centered tread l drawn out from the stock reel 3 and transfer it toward a forming former (not shown), is driven by a motor (not shown) to pull out the tread from the draw-out roll 7. Driven synchronously with speed.

Next, the sequence of operating steps of this device will be explained.

First, as a preparatory operation before starting operation, a stock reel 3 on which a series of band-like trends 1 are wound together with a liner 2 is set on the roll 6 of the frame 8, a part of the leader of the liner 2 is taken out, and a pull-out roll 7 is placed. , grip roll 2
3 to a box attached to the liner winding shaft 24, manually operate the cylinder 26 to pull out the grip roll 23 and press it against the liner 2 via the liner 2, and then operate the lever 22. clutch 2
0 is connected to the reel post, the gear motor 9 and the drive motor (not shown) of the transfer conveyor 27 are simultaneously driven, and the tread 1 is pulled out from the stock reel 3 while the liner 2 is peeled off and wound up. The tip of the EPC2
8, it is centered and transferred to the transfer container 27.

It goes without saying that the present invention can be applied to an apparatus for drawing out various strip materials in addition to treads together with liners from a stock reel.

(Effects) As described above, in the belt-shaped material drawing device of the present invention, even if the liner winding diameter increases, the liner winding speed and the tread drawing speed of the drawing roll are always synchronized.
Synchronous continuous operation of the pull-out roll and the transfer conveyor is possible, and there is no need to install a festoon mechanism between the tread pull-out roll and the transfer conveyor.Therefore, equipment costs and floor space can be saved, and there is no need to worry about material deformation at the festoon. (Furthermore, it has an excellent effect of being easy to center when being transferred to a transfer conveyor.

By adding a configuration in which the stock reel also stops when the pull-out roll stops, it is possible to effectively prevent the tread from sagging between the stock reel and the pull-out roll.

[Brief explanation of the drawing]

FIG. 1 is a front view of an embodiment of the belt-shaped material drawing device of the present invention, FIG. 2 is a plan view of the device of the embodiment, and FIG. 3 is a partial sectional view of a brake mechanism for a stock reel. DESCRIPTION OF SYMBOLS 1... Strip material (tread), 2... Liner, 3... Straight reel, 7... Drawer roll, 9... Drive device (motor), 10... Brake Shaft, 11... Brake, 20... Cla, Chi, 23... Clip roll, 24... Liner winding shaft, 25... Friction clutch, 27... Transfer conveyor.

Claims (2)

[Claims] (1) A strip-shaped material stock reel rotatably mounted on a mount, in which a strip-shaped material is wound together with a liner, and a series of strip-shaped material is rotatably supported in front of the strip-shaped material stock reel, and a series of strip-shaped materials are rolled up from the stock reel. a pull-out roll that pulls out the liner together with the liner; a grip roll that is supported by the pull-out roll so that it can be pressed and removed; and a liner winding shaft that is supported on the pedestal and that winds up the liner that has been pulled out by the pull-out roll and peeled off from the strip material. A device for drawing out a strip material, comprising: a friction clutch provided coaxially with the winding shaft; and a drive device that drives the drawing roll and the liner winding shaft in synchronization. (2) A brake shaft is provided on the strip material stock reel coaxially with the reel, a brake is attached to one end of the brake shaft, and a clutch is attached to the other end of the brake shaft, as claimed in claim 1. drawing device for strip material.