JPH03227861A - Device for rolling out belt-shaped material - Google Patents

Abstract

PURPOSE:To improve the productivity and quality by setting up an auxiliary rollout device provided with a liftable rollout guide roller which rolls out a belt-shaped material by predetermined length from a roll object while start and final ends of the belt-shaped material are connected in press contact between a press contact device and a supporting shaft. CONSTITUTION:In a condition that a final end Wa of a belt-shaped material W, first rolled out, and a point end Wb of the belt-shaped material W, rolled out from the next roll object 4, are overlapped in a predetermined length, when the final and point ends Wa, Wb are connected in press contact by a press contact device 6, lift action of a cylinder 20 is detected by proximity switches 21a, 21b, and a rollout guide roll 7 is lowered by a predetermined distance, in a condition that the material W is hooked, by actuating a lift cylinder 22 of an assist rollout device 8 associated with this cylinder 20. Thus by rolling out the material W by the predetermined length from the roll object 4, excessive tensile force is prevented from acting in a press contact connection part between the final and point ends Wa, Wb of the material W even when it is pulled by a rollout driving gear 3. Accordingly, such a problem as exfoliating the material W in the press contact connection part is eliminated.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a device for unwinding a strip-like material, and more particularly, to an apparatus for automatically unwinding the starting and ending ends of a strip-like material used as a tire constituent material. The present invention relates to a device for unwinding belt-shaped materials that enables accurate joining.

[Prior Art] Conventionally, in a tire forming process, when a strip material is used as a tire constituent material, a strip material of a certain length is wound around a cell in advance in a coil shape, and then the strip material is rolled up. A plurality of strips of material are inserted through the support shaft, and the strip material is sequentially rolled out from the strip located at the tip of the support shaft, and at the end of the roll, the tip of the strip material of the next strip A method of crimping and bonding using a crimping device and continuously rolling it out is practiced (Japanese Patent Application Laid-open No. 137749/1983).

However, in the case of the above-mentioned conventional device, if the adhesive force between the starting end and the ending end of the strip material is weak, when the strip material is continuously unrolled by the predetermined tensile force of the unwinding drive device, the strip material may be Problems such as peeling of the joints occurred, and there was a problem that the connection of the band-shaped materials lacked reliability.

[Problem that the invention seeks to solve]

Therefore, as a conventional measure to solve this problem, the strip-shaped material is rolled out in advance for a predetermined length from the entertainment device so that the tensile force from the rolling-out drive device does not act on the crimp joint between the starting end and the terminal end of the strip-shaped material. In addition, methods of crimping were carried out by increasing the crimping force at the end of the strip material, lengthening the crimping time, or increasing the lap length between the starting and ending ends of the strip material. .

However, in the case of a method in which a predetermined length of strip material is rolled out from the entertainment material in advance so that the tensile force from the stepping drive device does not act, there is a problem that it requires a lot of effort and time. Increasing the crimp force at the end of the material,
In the case of methods such as increasing the crimping time, there is a problem that the work cycle becomes longer and productivity cannot be improved, and the length of the lap between the starting and ending ends of the strip material is also increased. In the case of this method, there were problems in terms of quality.

[Purpose of the Invention] This invention was devised by focusing on the above-mentioned conventional problem, and it is possible to reliably and automatically join the starting end and the ending end of a strip-shaped material using a simple device, thereby making the work easier. The purpose of the present invention is to provide a stirring device for strip material that can shorten cycle time and improve productivity, and also improve quality because there is no need to increase the joining length. It is something to do.

[Means for Solving the Problems] In order to achieve the above object, the present invention removes the strip material from the entertainment while the starting end and the terminal end of the strip material are being crimped and joined between the crimping device and the support shaft. The gist is that an auxiliary unrolling device is installed, which is equipped with an unrolling guide roll that can be raised and lowered to unroll a predetermined length.

[Operation of the invention] The present invention is configured as described above, and while the starting end and the terminal end of the strip material are being crimped by the crimping device, the strip material is rolled out a predetermined length from the entertainment. When unwinding by a feeding device, an excessive tensile force is not applied to the joining part of the strip-shaped material, and the starting end and the terminal end of the strip-shaped material can be reliably and automatically joined.

[Embodiments of the invention]

Hereinafter, the present invention will be described in detail based on the accompanying drawings.

FIG. 1 is a plan view of a 1!1 dispensing device for belt-shaped material W according to the present invention, and FIG. 2 is a front view of FIG. A winding drive device 3 equipped with a roll 2 and an entertainment 4 for winding up this strip material W.
A crimping device 6 for crimping and joining the starting end wb and the terminal end Wa of the strip-shaped material W is disposed between the support shaft 5 and the support shaft 5 on which the belt-shaped material W is hung. Further, between the crimping device 6 and the support shaft 5, there is a movable member which can be freely raised and lowered to unwind the strip material W from the entertainment device 4 to a predetermined length while the starting end wb and the terminal end Wa of the strip material W are being crimped and joined. (An auxiliary unrolling device 8 equipped with an unrolling guide roll 7 is installed.

Next, to explain the above configuration in detail, the unwinding drive device 3 equipped with the unwinding drive roll 2 is installed on a pedestal 9 installed near a molding device (not shown), and The attached frame IO has the strip material W
8. One end of a support shaft 5 on which a plurality of rolled objects 4 hung is attached in a cantilevered manner.

On the tip side of the support shaft 5, a stopper member 11 against which the entertainment 4 comes into contact, and a shaft 12 of the entertainment 4 that advances and retreats on the same axis as the support shaft 5 are integrally disposed, and the stopper member 1
1 and the shaft 12 are configured to pivot in the vertical direction orthogonal to the longitudinal direction of the support shaft 5 via a pivot arm 14 that swings by a pivot cylinder 13 .

Further, on the support shaft 5, there is provided a sending means 15 having an orthogonal cross-section for sequentially sending out a plurality of entertainment items 4 onto the shaft 12 at the unwinding position.
is installed.

As shown in FIG.
5a is slidably fitted to the support shaft 4, and this base end 15
A guide portion 15b integrally formed in a direction perpendicular to a.
A plurality of guide grooves for the strip material W are provided at predetermined intervals.

This delivery means 15 is connected to a cylinder 16 installed on the frame I, and when the cylinder 16 is extended at a predetermined pitch, the base end portion 16a moves toward the distal end side of the support shaft 5 at a predetermined pitch. At this time, the image pickup 4 fitted on the support shaft 5 is sent out to the unrolling position side.

Reference numeral 17 denotes a photographing device 4 position detecting means (phototube, etc.) that works in conjunction with the cylinder 16, and detects the photographing device 4 in contact with the stopper member 11 to control the movement of the feeding device 15. .

A crimping device 6 installed between the scooping drive device 3 and the support shaft 5 is configured to press the terminal end Wa of the strip-shaped material W that has been stepped out first,
The tip wb of the strip-shaped material W unwound from the next photographing device 4 is pressed and bonded with the tip wb of the strip material W being overlapped for a predetermined length. The pressure bonding member 19 is configured to be raised and lowered by a cylinder 20.

Further, 21a and 21b indicate proximity switches that detect the raising and lowering operation of the cylinder 20.

As shown in FIG.
A cantilevered unwinding guide roll 7 is attached to the tip of the rod 23, and this unwinding guide roll 7 is used while the starting end wb and the ending end Wa of the strip material W are being crimped and joined by the crimping device 6. Next, the strip material W is rolled out from the camera 4 to a predetermined length.

The amount by which this strip-shaped material W is rolled out by a predetermined length requires at least the distance @l until the joint between the terminal end Wa and the leading end Wb of the strip-shaped material W reaches the unreeling drive roll 2.
If the distance is shorter than l, the joint portion of the strip material W may peel off due to the tensile force of the unwinding drive device 3.

In addition, the elevating cylinder 22 of the auxiliary unwinding device 8 and the cylinder 20 of the crimping device 6 are operated by a proximity switch 21a.
.
The elevating cylinder 22 of the auxiliary unwinding device 8 operates and the unwinding guide roll 7 unloads the strip material W from the pickup 4 to a predetermined length.

The embodiment of the present invention is configured as described above, and the terminal end Wa of the strip-shaped material W rolled out first and the tip end wb of the strip-shaped material W rolled out from the next rolled material 4 are separated by a predetermined length. When the cylinder 2 is being crimped and bonded by the crimping device 6 in an overlapping state,
0 vertical movement is detected by the proximity switches 21a and 21b,
Lifting cylinder 22 of auxiliary unwinding device 8 interlocked with this
is activated, the unwinding guide roll 7 is lowered a predetermined distance as shown by the chain line in FIG. be.

In this way, if the strip-shaped material W is unrolled for a predetermined length from the pickup 4 in advance, (even if the strip-shaped material W is pulled by the unwinding drive device 3, the terminal end Wa and the tip w of the strip-shaped material W are
An excessive tensile force does not act on the crimped joint with b, and therefore the problem of peeling of the strip material W at the crimped joint can be solved.

〔Effect of the invention〕

In this invention, as described above, between the crimping device and the support shaft,
While the starting and ending ends of the strip-shaped material are being crimped and joined, an auxiliary unwinding device equipped with a lifting guide roll that can be raised and lowered is installed to unroll the strip-shaped material a predetermined length from the camera, resulting in a simple configuration. This makes it possible to reliably and automatically join the starting and ending ends of the strip material, thereby shortening the cycle time and improving productivity.Furthermore, there is no need to take a long joining length. This has the effect of improving quality.

[Brief explanation of drawings]

FIG. 1 is a plan view of a belt-shaped material unwinding device embodying the present invention, FIG. 2 is a front view of FIG. 1, and FIG. 3 is an enlarged front view of a crimping section. l... unwinding device, 3... unwinding drive device, 4...
- Rolling product, 5... Support shaft, 6... Crimping device, 7...
Unrolling guide roll, tail... auxiliary unrolling device, W...
Band-shaped material, Wa...terminal end, wb...starting end.

Claims (1)

[Claims] A crimping device for crimping and bonding a starting end and a terminal end of a strip-shaped material is disposed between a drive device for rolling out the strip-shaped material and a support shaft on which a roll of the strip-shaped material is hung. In the apparatus, between the crimping device and the support shaft, a movable unwinding guide roll is provided between the crimping device and the support shaft for unwinding the strip material to a predetermined length from the roll while the starting end and the terminal end of the strip material are being crimped and joined. A belt-shaped material rolling-out device, characterized in that it is equipped with an auxiliary winding-out device.