KR20000014149A - Structure of compressing roll differentially acted by compressing pressure - Google Patents

Abstract

PURPOSE: A structure of a compressing roll is provided to be differentially acted by the compressing pressure to give compressing pressure suitable for each material when winding preliminary assembling materials. CONSTITUTION: The compressing roll is formed by: many connection holes(3h) formed on both ends of a fixed shaft(3b); an inlet(3c) communicated with a supply groove(3i); a piston(3d) installed on the lower part of the inlet and operated by air pressure; an aperture formed in the middle to be inserted into the fixed shaft; many disks(3a) having many bearings(3e) installed between an inner part(3g) and an interlocking part(3f).; Herein, the interlocking part of the disk is touched with a preliminary assembling material(1). Thereby, only the interlocking part is rotated by the bearing, and it gives compressing pressure to the preliminary assembling material by differential compressing pressure.

Description

The structure of the pressing roll with the pressing pressure differentially

The present invention relates to a pressing roll adapted to apply a pressing pressure to a winding wound on a rotating drum, and in particular, a preliminary pressing through a pressing roll to adjust the pressing pressure to suit the characteristics of a plurality of pre-assembled materials. The present invention relates to a structure of a pressing roll in which a pressing pressure that enables the winding of the assembly material and the automation of the connecting part process is differentially performed.

In general, a tire is a combination of several semi-finished products to form a finished tire. Among these semi-finished products, when the preliminary assembly of the inner liner and sidewall is wound on a rotating drum, the compression of the material and the air between the materials are performed. Sponge rolls are used to remove the material onto the rotating drum. Looking at this process in more detail, as shown in FIGS. 5 to 6, the inner liner and the sidewall, which are separate materials, overlap one of the coils. A pre-assembled material 1, which is water, is wound on a rotating drum 2, and a sponge roll 101 which is vertically moved by a cylinder 102 is installed on the outside of the pre-assembled material wound on the rotating drum 2. When the sponge roll 101 moves up and down by the cylinder 102 to be in close contact with the outer shell of the preliminary assembly 1 and interlocks with each other, the preliminary assembly is wound on the rotary drum 2. The ash 1 is wound on the rotating drum 2 under a constant pressing pressure by the sponge roll 102.

However, when winding the pre-assembly to the rotating drum, the conventional sponge roll is applied to each part of the profile of the pre-assembly of the pre-assembly by the shape of the roll, the same pressing pressure throughout the sponge roll.

However, there is a gauge difference between the inner liner and the sidewall, which is a preliminary assembly, and the gauge difference in the profile of the sidewall itself causes a greater pressure to be applied to the thicker portion of the gauge. Since the amount of increase in the wall portion is different, not only the amount of overlap between the innerliner and the sidewall of the connection part of the prefabricated material can be equally controlled, but also the process automation of the connection part is impossible.

Accordingly, the present invention has been made to solve the above problems, provided with a pressing roll that can apply a different pressing pressure for each part of the pre-assembly during the winding, the pressing pressure suitable for each material during the winding of the pre-assembly It is an object of the present invention to provide a structure of a pressing roll in which the pressing pressure to apply the differential action.

1 is a plan view and a side view showing the initial appearance of the pre-assembled material is wound on the pressing drum by the pressing roll according to the present invention;

2 is a plan view and a side view showing a state in which the pre-assembled material of FIG. 1 is wound around a crimping drum to form a connection portion;

3 is a plan view of a pressing roll which is the gist of the present invention;

4 is a cross-sectional view taken along line II of FIG. 3;

5 is a conventional structure, corresponding to FIG.

FIG. 6 is a conventional structure, which corresponds to FIG.

1: pre-assembly 2: rotating drum

3: pressing roll 3a: disk

3b: fixed shaft 3c: inlet

3d: piston 3e: bearing

3f: linkage 3g: internal

3h: Connector 3i: Supply groove

d: play

The present invention for achieving the above object is a fixed shaft provided with a piston which is operated by the air pressure flowing into the inlet along the supply groove formed in the both ends and the supply groove is provided therein, the fixed shaft and the fixed shaft An opening is formed in the center so as to be inserted in the center, and there is a pressing roll made up of a disk having a plurality of bearings installed therebetween, and the disk of the pressing roll moves up and down by a vertical movement of the piston, which is wound on a rotating drum. The wound can be wound under different pressing pressures to suit the properties of the material.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a plan view and a side view showing the initial appearance of the pre-assembly is crimped to the crimping drum by the pressing roll according to the present invention and FIG. 3 is a plan view of a pressing roll which is the gist of the present invention, and FIG. 4 is a cross-sectional view taken along the line II of FIG. 3, and the same reference numerals are denoted at the same parts as the conventional structure, and detailed description thereof will be omitted.

According to the present invention, a plurality of connectors 3h are formed at both ends of a square shape, and a supply groove 3i is formed therein, while an inlet 3c communicating with the supply groove 3i is formed, and the inlet 3c is formed. In the lower part, a fixed shaft 3b provided with a piston 3d operated by air pressure is formed, and an opening is formed in the center so as to be inserted into the fixed shaft 3b. There is provided a pressing roll (3) consisting of a plurality of disks (3a) with three bearings (3e), the connector (3h) of the pressing roll (3) is connected to a conventional air pump (not shown) through a hose In order to control the air flow of this air pump, a PLC (Programmable Logic Controller) and a plurality of solenoid valves (not shown) are connected.

Hereinafter, the operation of the present invention will be described in detail.

In the present invention, the compressed air from the air pump is introduced into the connector (3h) of the pressing roll (3) through the solenoid valve and hose, the inlet air through the supply groove of the fixed shaft (3b) 3c), the piston 3d is pushed down by the introduced compressed air to push down the inside (3g) of the disk (3a), the disk (3a) and the fixed shaft (3b) It can be lowered by the clearance d, which is a free space of.

On the other hand, if the pressing roll 3 is arbitrarily divided into several zones and the compressed air of the same pressure is supplied for each zone, the same compressed air can be delivered to several discs 3a, which is suitable for the characteristics of the winding material. The compression pressure of the pressing roll 3 can be adjusted for each zone so that the data is set in PLC to control the differential pressing pressure for each disc 3a and the solenoid valve is controlled according to the output signal of the data. It is possible to supply differential pressure air.

Therefore, the interlocking portion 3f of the disk 3a is in contact with the preassembled material 1 while the preassembled material 1 is wound on the rotating drum 2. While only the portion 3f is rotated, the pressing pressure is applied to the preliminary assembly 1 with the differential pressing pressure as described above.

As a result, the inner liner and the sidewall of the preliminary assembly 1 are wound on the rotary drum 2 at a compression pressure suitable for each characteristic, so that the overlapping amount of the connecting portions is uniform.

As described above, according to the present invention, the disks of the rotating rolls are pressed to the pre-assembly by the differential pressing pressure, respectively, so that the amount of overlap of each material can be made uniform when the pre-assembly is wound on the rotating drum. Of course, there is an effect that can automate the process of connecting the pre-assembly.

Claims (1)

In the pressing roll to apply a pressing pressure to the winding material wound on the rotating drum, The pressing roll 3 has a plurality of connectors 3h formed at both ends of the fixed shaft 3b and a supply groove 3i formed therein, while an inlet 3c communicating with the supply groove 3i is provided. Under the inlet 3c, a piston 3d operated by pneumatic pressure is installed, and an opening is formed in the center so as to be inserted into the fixed shaft 3b, and is formed between the inner 3g and the interlocking portion 3f. Composed of a plurality of disks 3a provided with two bearings 3e, different pressing pressures can be applied for each disk 3a according to the characteristics of the winding material wound on the rotating drum 2 through the pressing roll 3. The structure of the pressing roll that the pressing pressure is characterized in that the differential action.