JP2002067181A - Tire molding method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tire molding method capable of enhancing workability and productivity by dividing the molding system of a single stage and capable of easily keeping the shape of an intermediate green tire to prevent lowering of quality. SOLUTION: A belt molding machine 1, a belt transfer device 2 for feeding the belt molded by the belt molding machine 1 and a shaping machine main body 3 are arranged in series, and a completed green tire take-out device 4, a second shaping drum 6 and a tread supply device 5 are parallelly arranged on the lateral side of the belt transfer device 2. A green tire reversal device 7 and a bead loader 8 are also provided. In this embodiment,,the second shaping drum 6 having the function of a shaping drum is arranged to the arm part 4A of the completed green tire take-out device 4 and a tread member W3 can be wound around the second shaping drum 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a tire molding method, and more particularly to a tire molding method for improving workability and productivity in a single-stage tire molding system.

[0002]

2. Description of the Related Art Conventionally, as a single-stage molding system in a tire molding process, for example, as shown in FIGS. 3 and 4, a shaping machine body 3 such as a belt molding machine 1, a belt transfer device 2, and a shaping drum 3A. The completed green tire take-out device 4 is provided on the side of the belt transfer device 2, and the tread supply device 5 is provided in parallel on the side of the shaping drum 3A. W
1, assembly and processing of tire constituent members such as a carcass member W2 and a tread member W3 are performed by one stage.

There is also known a method in which a belt member W1 and a tread member W3 are separated in two stages.

[0004] When the tread winding process is performed in a toroidal shape close to a tire shape, a so-called strip wind forming in which a belt-shaped material is formed while being continuously spirally wound is also known. Is also known.

[0005]

However, in the former method in which molding is performed in one stage, productivity is reduced.
There is a problem that deterioration due to centralization of assembly and processing occurs, and the latter two-stage method has problems such as deformation during transportation of the intermediate green, and in any case, there are various problems. It had the following.

SUMMARY OF THE INVENTION It is an object of the present invention to improve workability and productivity by dividing a single-stage molding system, to easily maintain the shape of an intermediate green tire, and to prevent deterioration in quality. It is to provide a tire molding method.

[0007]

According to the present invention, in order to achieve the above object, an intermediate green tire is formed by attaching members, shaping, turning up, assembling a belt material, and stitching on a first shaping drum. And
This intermediate green tire is gripped by the second shaping drum, and during the step of transporting to the next step, the intermediate green tire is reproduced in an inflated shape similar to the first shaping,
The gist is to perform a tread winding operation on the intermediate green tire.

According to the present invention, as described above, by installing two shaping drums in one molding system, it is possible to improve the productivity and workability by dividing the work stage, and to improve the intermediate green. It is easy to maintain the shape of the tire and can effectively prevent deterioration in quality.

[0009]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

The same components as those in the conventional example are denoted by the same reference numerals, and description thereof will be omitted.

FIG. 1 is a schematic perspective view of a tire molding apparatus for carrying out the tire molding method of the present invention, and FIG. 2 is a schematic plan view showing a belt servicer 1A and a belt drum 1B.
And a belt transfer device 2 for transporting the belt formed by the belt forming machine 1
And a shaping machine main body 3 including a first shaping drum 3A, a carcass member and a servicer 3B of a sheet-like material, a stitcher device 3C, a bead transfer device 3D, and the like, are arranged in series. In the section, a completed green tire take-out device 4, a second shaping drum 6 and a tread supply device 5 are respectively installed in parallel, 7 is a green tire reversing device, and 8 is a bead loader.

In the embodiment of the present invention, a second shaping drum 6 having a function of a shaping drum is installed on the arm portion 4A of the finished green tire unloading device 4, and the tread member W is placed on the second shaping drum 6.
3 is a system that can be wound.

That is, on the first shaping drum 3A similar to the conventional one, a tire constituent member such as a carcass member W2 or a sheet-like material is attached, and shaping, turn-up, and the like are performed.
After assembling, processing, and stitching the belt member W1 formed by the belt forming machine 1, the green tire W is gripped by the second shaping drum 6 and transported to the next stage. Then, when the green tire W is transported, the bead portion Wx is re-chucked and air-shaped to reproduce the first inflated shape, and the tread member W3 is wound.

As described above, since the winding step of the tread member W3 is performed separately on the second shaping drum 6, the next tire forming operation can be started on the first shaping drum 3A. It becomes possible.

In the embodiment of the present invention, two shaping stages are provided in a single-stage molding system, and the green tire W is molded by a combination operation thereof, so that the deformation of the green tire W can be prevented, and the space production efficiency can be improved. Can also be achieved.

[0016]

According to the present invention, an intermediate green tire is formed by attaching members, shaping, turning up, assembling a belt material, and stitching on the first shaping drum as described above. Was gripped by the second shaping drum, and during the process of transporting to the next process, the intermediate green tire was reproduced in the inflated shape similar to the first shaping, and the tread was wound around the intermediate green tire, It has the following excellent effects. (a). By dividing the single-stage molding system, workability and productivity can be improved. (b). The shape of the intermediate green tire can be easily maintained, and a decrease in quality can be prevented. (c) Since it can be directly connected to a vulcanizer and molded, the vulcanization time of the molded green tire can be shortened and the productivity can be improved.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view of a tire molding apparatus for performing a tire molding method of the present invention.

FIG. 2 is a schematic plan view of the tire forming apparatus.

FIG. 3 is a schematic perspective view of a conventional tire molding apparatus.

FIG. 4 is a partial explanatory view of a conventional molded tire.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Belt forming machine 1A Belt servicer 1B Belt drum 2 Belt transfer device 3 Shaping machine main body 3A First shaping drum 3B Servicer 3C Stitcher device 3D Bead transfer device 4 Finished green tire take-out device 4A Arm part 5 Tread supply device 6 Second shaping drum 7 Green tire reversing device 8 Bead loader W Green tire W1 Belt member W2 Carcass member W3 Tread member Wx Bead section

Claims (2)

[Claims] 1. A tire forming method for assembling and processing tire components in a single forming step, comprising: attaching, shaping, turning up, assembling a belt material, and stitching a member on a first shaping drum. To form an intermediate green tire, hold the intermediate green tire with a second shaping drum, and reproduce the intermediate green tire into an inflated shape similar to the first shaping during the process of transporting to the next process. A tire molding method for performing a tread winding operation. 2. The tire molding method according to claim 1, wherein the tire removing step of the molding step is a step of directly installing the tire in a vicinity of a vulcanizing step.