JP2003071951A - Method and apparatus for automatically connecting sheet-like material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method and an apparatus for automatically connecting a sheet-like material capable of obtaining a more rigid connecting state by impressing and connecting a sheet-like material end from upper and lower surfaces of a butt part of the material end. SOLUTION: The apparatus 1 for automatically connecting the sheet-like material comprises a split molding drum 2, and a pair of upper and lower impressing means 4 for impressing and connecting upper and lower surfaces of an end Wa of the sheet-like material W butted on the drum 2. The drum 2 has drum segments 6a, 6b openably and closably constituted via a hinge 5, and a vertically movable support segment 8 introduced into and retracted between connecting parts 7 of the segments 6a, 6b. The segments 6a, 6b are openably and closably constituted at the hinge 5 as a fulcrum by opening/closing cylinders 9a, 9b arranged in the drum 2. The segment 8 is vertically moved by an elevation cylinder 10 arranged in the drum 2, and introduced into and retracted from between the connecting parts 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joining method and a joining apparatus for joining end portions of unvulcanized sheet-like materials such as carcass members used as tire constituent materials, and more particularly to a sheet-like material projecting method. The present invention relates to a joining method for a sheet-like material and a joining apparatus for automatically crimping and joining from the upper and lower surfaces of combined terminal portions.

[0002]

2. Description of the Related Art Conventionally, in a tire molding process, an unvulcanized carcass or other sheet material is wound around a cylindrical molding drum for butt joining (referred to as butt splice). There is.

However, when the sheet-shaped material is wound around the forming drum, the end portions are likely to overlap (wrap) or open due to a subtle difference in the length of the member. I had to work.

Further, as a butt jointing device for carcass members, there is one called a zipper device or a toe-in roller device. The zipper device or toe-in roller device is a carcass member that is abutted or slightly opened. It is a device that presses both ends of two of them together with two beveled rollers to draw them together.

[0005]

By the way, in the crimping method using the crimping device as described above, after the end portions of the sheet-shaped material are butted against each other while the split type molding drum is closed, the crimping device is pressed from above the molding drum. Is a method of pressing and joining one surface of the end portion of the sheet-shaped material.

However, depending on the type of the sheet material, it is sometimes desired to press the upper and lower surfaces of the abutting portions of the end portions of the sheet material to obtain a strong crimp joint, but in the conventional method, the sheet material is used. Unless turned inside out, it was difficult to firmly bond the front and back surfaces of the butted portion.

An object of the present invention is to provide a sheet-like material joining method and a joining apparatus for the sheet-like material, in which a stronger joining state can be obtained by press-bonding the upper and lower surfaces of the abutting portions of the sheet-like material end portions. Especially.

[0008]

In order to achieve the above object, the present invention provides a method for joining sheet-like materials according to the present invention.
While opening the joint between the pair of open / close segments,
With the support segment interposed between the joints, the joint ends of the sheet material that has been cut to a predetermined length are pasted so that the joints are opened at the joints. After closing the sheet-shaped material and abutting the end portions of the sheet-shaped material, withdrawing the support segment from the joining position, the joined terminal portions of the abutted sheet-shaped material are crimped from the upper and lower surfaces thereof by crimping means to join them. To do.

Further, according to another method of joining sheet-like materials of the present invention, the joint portion of the pair of open / close segments is opened, and the support segment is interposed between the joint portions, and a predetermined length is preset. Affixed so that the joined end portion of the cut sheet-shaped material is in an open state at the joined portion, the joint portion of the open / closed segment in the opened state is closed and the sheet-shaped material end portion is abutted, and the sheet-shaped material end portion With the lower surface side of the butted portion supported by the support segment, the sheet material material is crimped from the upper surface side of the butted portion of the terminal portion by a crimping means, and then the support segment is retracted from the joining position, and then the butted portion The gist of the present invention is that the crimping means located on the upper surface side is used as a base, and the crimping means is used to crimp and join from the lower surface side of the butted portion.

In this way, after the end portions of the sheet-shaped material are butted against each other on the forming drum, the tightly joined portions are joined by joining the upper and lower surfaces of the butted portions by crimping means simultaneously or sequentially from one side. You can get it.

Further, the sheet-shaped material joining device of the present invention is divided into a pair of drum segments which can be opened and closed with a hinge as a fulcrum, and a support segment which can be moved up and down between the joined portions of the drum segments. The gist of the present invention is that it comprises a molding drum of a mold and a pair of upper and lower crimping means for crimping and joining the upper and lower surfaces of the end portions of the sheet-shaped material abutted on the pair of drum segments. The pressing means is composed of a pair of beveled rollers.

As described above, by providing the retractable support segment for supporting the end portion of the sheet-like material only on the lower surface side of the butted portion and the vertical pressing means for crimping the upper surface side and the lower surface side of the butted portion, the forming drum is provided. The upper and lower surfaces of the butted portions of the sheet-shaped material end portions can be reliably and firmly pressure-bonded in a state of being wound around, and can be easily manufactured only by improving the conventional apparatus.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a front view of a joining apparatus for carrying out the method for joining sheet-like materials according to the present invention, and FIG.
(A)-(d) shows the process drawing of the joining method of a sheet-like material, The said joining apparatus 1 is the two-part type | mold molding drum 2,
A pair of upper and lower crimping means 4 for crimping the upper and lower surfaces of the end portions Wa of the sheet-shaped material W abutted on the forming drum 2.
Composed of and.

The two-divided molding drum 2 has a hinge 5
The drum segment 6a, 6b is composed of a two-divided type drum segment 6a, 6b which can be opened and closed via a drum, and a support segment 8 which can be moved up and down between the joint portions 7 of the drum segment 6a, 6b. Is configured to be openable and closable with the hinge 5 as a fulcrum by the opening and closing cylinders 9a and 9b arranged in the molding drum 2.

Further, the support segment 8 is formed by the forming drum 2
It is configured to be moved up and down by an elevating cylinder 10 disposed inside and to be moved in and out between the joint portions 7.

The open / close cylinders 9a, 9b are adapted to open / close the drum segments 6a, 6b in three stages of fully open the drum, open the middle of the drum (position where the forming drum becomes a perfect circle), and close the drum.

Further, the above-mentioned pair of crimping means 4 are disposed in the upper and lower portions between the joining portions 7 of the drum segments 6a and 6b, and the crimping means 4 are rotationally driven by a rotation driving means (not shown). A pair of beveled rollers 11a, 1
1b (toe-in roller).

In the embodiment of the present invention shown in FIG. 1, only the crimping means 4 located on the upper side between the joints 7 is shown, and the crimping means (not shown) located on the lower side is
From the side surface side of the molding drum 2, the drum segments 6a, 6b
The lower surface of the end portion Wa of the sheet-shaped material W is configured to enter between the joint portions 7 and to be pressure-bonded and joined.

Next, a method for joining sheet materials will be described.

A first embodiment of the joining method of the present invention will be described with reference to FIGS. 2 (a) to 2 (d).

First, as shown in FIG. 2A, the joining portion of the drum segments 6a and 6b of the molding drum 2 is 4 to 5 mm.
With a certain clearance h, that is, with the drum fully open, the support segment 8 is connected to the drum segment 6.
Lifting cylinder 10 so as to be flush with the surfaces of a and 6b
To raise between the joints 7.

In this state, the sheet-shaped material W, which has been cut to a predetermined length, is pasted so that the end portion Wa of the sheet-shaped material W is opened at the joining portion. From this state, as shown in FIG. 2 (b), the end portions Wa of the sheet-shaped material W are abutted while the joint portions of the open / close segments 6a and 6b in the open state are closed to a position slightly closed from the true circle position. .

Thereafter, as shown in FIG. 2 (c), the supporting segment 8 is joined to the joining portion 7 through the lifting cylinder 10.
After retracting (lowering) the pressure-bonding means 4a on the lower side from the space to a position where the pressure-bonding means 4a on the lower side is not disturbed, the pressure-bonding means 4a is caused to enter between the bonding portions 7, and the bonding end portion W of the butted sheet-shaped material W is joined.
a is simultaneously pressure-bonded from the upper and lower surfaces by the pressure-bonding means 4 and 4a to be bonded. As a result, a strong joint can be obtained.

Next, as another embodiment of the method for joining sheet-shaped materials according to the present invention, although not shown, the same elements will be denoted by the same reference numerals.

First, similar to the method of the first embodiment,
With the clearance h of about 4 to 5 mm provided at the joint between the drum segments 6a and 6b of the molding drum 2, that is,
With the drum fully opened, the support segment 8 is raised between the joints 7 by the lifting cylinder 10 so as to be flush with the surfaces of the drum segments 6a and 6b.

In this state, the end portions Wa of the sheet material W, which has been cut into a predetermined length, are attached so that the end portions Wa are opened at the joint portions. From this state, the end portions Wa of the sheet material W are butted against each other while the joint portion of the open / close segments 6a and 6b in the open state is closed to a position slightly closed from the true circle position.

In this state, the lower surface side of the abutting portion of the end portion Wa of the sheet material W is supported by the support segment 8
In the state of being supported by, the pressure is applied by the pressure bonding means 4 from the upper surface side of the abutting portion of the end portion Wa of the sheet material W.

After that, the supporting segment 8 is retracted (moved down) from between the joints 7 through the elevating cylinder 10 to a position where the lower crimping means does not interfere, and then the crimping means located on the upper surface side of the butting portion. Based on 5,
The lower surface side of the abutting portion is pressure-bonded by the pressure-bonding means 4a and bonded.

In this embodiment, the abutting portions of the end portions Wa of the sheet-shaped material W are formed on each side, but a strong joint can be obtained as in the method of the first embodiment.

[0031]

Since the present invention is constructed as described above, it has the following excellent effects. (a). After abutting the end portions of the sheet-shaped material on the forming drum, the upper and lower surfaces of the abutting portion can be pressure-bonded simultaneously or sequentially from one side by a pressure-bonding means to obtain a strong bonding portion. I can. (b). The sheet-shaped material is wound around the forming drum by providing a retractable support segment for supporting only the lower surface side of the butted portion and an upper and lower crimping means for crimping the upper and lower surfaces of the butted portion. In this state, the upper and lower surfaces of the butted portions of the sheet-shaped material end portions can be firmly and firmly pressure-bonded, and can be easily manufactured only by improving the conventional device.

[Brief description of drawings]

FIG. 1 is a front view of a bonding apparatus for carrying out a method for bonding sheet-like materials according to the present invention.

2A to 2D are process diagrams of a method for joining sheet materials.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Joining device 2 Two-division type forming drums 4, 4a Crimping means 5 Hinge 6a, 6b Drum segment 7 Joining part 8 Supporting segments 9a, 9b Opening / closing cylinder 10 Lifting cylinder W Sheet material Wa Terminal part of sheet material

Claims (4)

[Claims] 1. A joining end portion of a sheet-shaped material, which has been cut into a predetermined length, is joined to the joining portion of a pair of opening / closing segments in an opened state and a supporting segment interposed between the joining portions. The sheet-shaped material ends by abutting the joints of the open / closed segments in the opened state and abutting the sheet-shaped material end portions, and retracting the support segment from the joining position. A method for joining sheet-like materials, wherein parts are joined together by pressure bonding from the upper and lower surfaces thereof by a pressure bonding means. 2. The joining end portion of the sheet-shaped material, which has been cut into a predetermined length, is joined to the joining portion of the pair of open / close segments in an open state with a support segment interposed between the joining portions. A state where the sheet-shaped material end portions are butted and the lower surface side of the butted portion of the sheet-shaped material end portion is supported by a support segment. Then, the crimping means is crimped from the upper surface side of the butted portion of the sheet-shaped material end portion by the crimping means, and then the support segment is retracted from the joining position, and then the butted portion is located on the upper surface side of the butted portion as a base. A method for joining sheet-like materials, which is performed by pressure-bonding from the lower surface side of the sheet with a pressure-bonding means. 3. A split type molding drum comprising a pair of drum segments that can be opened and closed with a hinge as a fulcrum, and a support segment that can move up and down between the joints of the drum segments, and the pair of drum segments. A sheet-shaped material joining apparatus comprising a pair of upper and lower crimping means for crimping and joining the upper and lower surfaces of the end portions of the sheet-shaped material that are butted against each other. 4. The apparatus for joining strip-shaped materials according to claim 3, wherein the pressure-bonding means comprises a pair of bevel-shaped rollers.