KR100339783B1 - manufacturing apparaturs of tread belt used in Tire - Google Patents

Abstract

The present invention relates to a tread belt manufacturing apparatus for a tire which is capable of automatically feeding and cutting wire steel, which is a raw material of a tread belt, and aligning and attaching the tread portion to a tread part when the tire is manufactured.

The manufacturing apparatus of the present invention transfers the wire steel wound on the krill, cuts it to a certain length, and aligns the cut wire steel one by one in the grooves formed on the circumferential surface of the drum which rotates finely, and inserts the introduced wire steel into about 22 It is in close contact with the inside of the tread portion of the tire which is rotated by the motor while being inclined at ˜24 °, and the wire steel in close contact with the tire is pressed again by a pressure roller to be completely attached.

According to the present invention as described above, a plurality of wire steels are attached to the surface of the tire by one rotation by sequentially cutting one wire steel wound on the krill and sequentially aligning the cut wire steels.

According to the manufacturing apparatus of the present invention, the installation space of the equipment can be reduced, the alignment of the cut wire steel is easy, and the wire steel can be attached to the tire at a desired angle.

Description

Manufacturing apparaturs of tread belt used in Tire}

The present invention relates to a tread belt embedded in a tread portion to reinforce the toughness and tension of a tire made of a thick rubber layer in the manufacture of a tire.

More specifically, the present invention relates to a tread belt manufacturing apparatus for tires, which automatically feeds, cuts, and aligns wire wire, which is a raw material of the tread belt, to be attached to the tread portion.

In general, the tire of the vehicle is mounted on the vehicle body to support the load and weight of the vehicle body, to transfer the driving force of the engine to the road surface, and to absorb the shock received from the road surface to protect the vehicle body.

In addition, the braking force of the brake is transmitted to the road surface to ensure safe driving.

Such tires are intensively worn out of the tread portion in direct contact with the road surface when driving.

1 is a cross-sectional view showing the structure of a general tire 200.

As shown, the tire 200 has a tread portion 201 of a thick rubber layer in direct contact with the road surface at the outermost side, and the tread portion has various forms in order to secure a coefficient of friction with the road surface and maintain directionality. Groove trough groove (202) is formed.

In addition, inside the tire 200, a rim 204 of a metal material and a bead portion 203 of a relatively thick rubber layer fitted to the rim are formed, and the rim is formed of a metal material having sufficient strength to drive the power of an automobile. To the tire.

In addition, the rim 204 is provided with an air injection valve 206 for injecting air into the tire, and a plurality of bead wires 207 for imparting toughness and tension to the tire inside the rubber layer; The tread belt 208 and the reinforcement 209 are embedded.

Among them, the tread portion 201 serving as a ground plane is a portion where wear is most severe when running, and the reinforcement 209 and the tread belt 208 described above are embedded therein.

The reason for this is to prevent sudden leakage of the compressed air injected therein and maintain the safety of the occupant when the tire is damaged by foreign matters while the vehicle is in contact with the ground while driving.

The tread belt 208 is usually formed by densely embedding a wire steel belt in an “X” shape in the tread portion 201 of the tire 200, and compresses even if foreign matter has penetrated together with prevention of foreign matter. Prevents sudden leakage of air to keep the body and occupants safe.

To this end, the wire steel belt is embedded in the tread portion in contact with the ground when the tire is manufactured in an “X” shape to form a tread belt 208.

In order to form the tread belt 208 composed of a wire steel belt as described above, a process such as supplying, cutting, aligning, and attaching wire steel, which is a material, is required, and the tread belt 208 has a tire of about 20 to 24 °. It is generally attached obliquely at an angle of.

By the way, since the tire manufacturing equipment used so far is for mass production purposes, the manufacturing process has been subdivided and the automation of equipment has been made to some extent, but these facilities have a large size and have a complicated disadvantage.

That is, the conventional tire manufacturing process and apparatus are as follows.

First, the winding process of winding the steel wire to the creel (Creel); In order to compactly install wire steel in the outer diameter of a tire, as many as 1300 krill and a large stand capable of installing all of these are required; Forming a steel belt by applying a rubber plate to the front and rear surfaces of the aligned wire steel and an alignment device for aligning the wire steel supplied from the krill at an accurate interval; A transfer step of cutting the rubber plate (steel belt) in which wire steel is embedded and cutting at a predetermined angle and width; Separating and storing the cut rubber sheet (steel belt); Attaching the cut rubber plate (steel belt) to the inside of the tread portion of the tire; And the like.

If you analyze each of these problems by process,

① In order to manufacture tires (tubeless tires) with built-in wire belts, about 1300 krill and large stand and installation space for installing them are required.

② A large aligner is needed to align about 1300 wire steels wound on each krill at regular intervals on the plane.

③ An applicator for attaching and attaching a thin rubber sheet to the upper and lower portions of the aligned wire steel is required.

④ Bobbin to wind the steel belt coated with rubber, and a device for winding it,

⑤ Also, a device for rewinding and conveying and supplying the device, a device for adjusting the steel belt to be inclined at an angle of 22 to 24 °, and a shearing M / C for cutting are needed.

⑥ Since there is a difference in the width of winding the steel belt in the left and right directions of the tire, a space for cutting and storing the belt in two kinds of widths and a device for driving the tire when winding it on the tire are needed.

⑦ In addition, the installation where the work is performed requires the arrangement of workers to check the progress of the process.

Therefore, although such a conventional manufacturing process and apparatus are automated to some extent, the installation itself is large, and since the manufacturing of the equipment is difficult, a large installation space is required according to the installation of the equipment with excessive expenditure of cost. There was a problem causing rise and productivity and quality deterioration.

The present invention is to solve this problem, the technical problem is to improve the productivity and cost reduction by the process of automatically supplying, aligning and attaching the wire steel that is the material of the tread belt when manufacturing the tire with a simple device To provide a tread belt manufacturing apparatus that can contribute to.

1 is a cross-sectional view showing the structure of a general tire

Figure 2 is a schematic diagram showing the overall configuration of the present invention

3 is a plan view showing the overall configuration of the present invention

4 and 5 is an enlarged view of the main portion of the present invention

※ Explanation of code for main part of drawing

10: krill 20: feed roller

21: motor 30: laser cutter

40: air supply pipe 50: drum

51: groove 52: drum shaft

60: stepping motor 61: motor shaft

70: power transmission 71: worm

72: worm wheel 80: clamp

90: motor 100: pressure roller

110: guide tube pipe

The manufacturing apparatus of the present invention for achieving the above object is to cut the wire steel wound to a certain length while transporting the wire steel wound on the krill, and to align the cut wire steel one by one into the groove formed on the circumferential surface of the drum to finely rotate In this case, the injected wire steel is inclined at about 22 to 24 ° to be in close contact with the inside of the tread portion of the tire which is rotated by the motor, and the wire steel which is in close contact with the tire is pressed again by a pressure roller to be completely attached.

According to the present invention as described above, a plurality of wire steels are attached to the surface of the tire by one rotation by sequentially cutting one wire steel wound on the krill and sequentially aligning the cut wire steels.

According to the manufacturing apparatus of the present invention, the installation space of the equipment can be reduced, the alignment of the cut wire steel is easy, and the wire steel can be attached to the tire at a desired angle.

Therefore, the automation and installation area of the process is reduced, and the process of supplying, aligning and attaching the wire steel is performed quickly and accurately, thereby contributing to the reduction of the manufacturing cost of the tire and the improvement of productivity and quality.

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

2 is a schematic view showing an overall configuration of the present invention, and FIG. 3 is a plan view thereof.

As shown, the present invention is a krill (10) wound around the wire steel (W) material of the tread belt;

Two feed rollers 20 which rotate by the motor 21 serving as a driving source and press the wire steel wound on the krill to feed at a constant speed;

A laser cutter (30) for cutting the wire steel (W) transferred by the feed roller to a predetermined length;

An air supply pipe 40 which transfers the cut wire steel at a pressure of air to one of the grooves 51 formed on the outer circumferential surface of the drum 50;

A drum (50) having a groove (51) into which the wire steel supplied from the air supply pipe is introduced one by one and connected to a stepping motor (60) and a driving means (70) as a driving source;

A clamp (80) installed outside the groove (51) of the drum to guide one cut wire steel (W) into one groove;

The tire T is installed on the side of the drum at an angle of 22 to 24 ° to be inclined and rotated by the motor 90 as a driving source so that the wire steel W in the groove 51 is adhered to the surface at regular intervals. And;

A pressure roller 100 installed at the periphery of the tire to completely attach the cut wire steel to the surface of the tire by pressing the tire T to which the wire steel is attached; It consists of.

In addition, a guide tube pipe 110 is installed between the feed roller 20 and the air supply pipe 40 to prevent the wire steel transferred by the feed roller from being disturbed.

The krill 10 is installed on the upper side of the apparatus as a winding drum having a wound shape wound around the wire steel W.

The two feed rollers 20 serve to transport the wire steel at a constant speed by rotating by the motor 21 as a driving source while holding the wire steel in between.

The laser cutter 30 cuts the wire steel W transferred by the feed roller with a predetermined time difference, cuts the wire steel to a predetermined length, and supplies the air to the air supply pipe 40.

The air supply pipe 40 discharges the wire steel injected into the inside by using a pressure of air with a certain time difference so that one wire steel is inserted into one recess 51.

The drum 50 is finely rotated by the stepping motor 60 and the driving means 70 which are driving sources, and a plurality of grooves 51 into which the cut wire steel is injected are formed at equal intervals on the outer circumferential surface thereof.

The recess 51 is formed in a "V" shape or a "U" shape.

The transmission means 70 is constituted by a worm 71 and a worm wheel 72 which are installed on the drum shaft 52 and the motor shaft 61, respectively, and are connected to each other to transmit the rotational force of the stepping motor to the drum.

The transmission means 70 may be replaced with bevel gears, belt transmission means and chain transmission means, if necessary in addition to the worm and worm wheel.

The clamp 80 is a circular ring or ring shape of which one side is opened to be installed outside the peripheral portion of the drum 50 to prevent the separation and flow of the wire steel W inserted into the recess 51.

The tire T is installed in inclined contact with the side surface of the drum 50 at 22 to 24 degrees, and the motor 90 for driving the tire uses a geared motor.

The pressure roller 100 is installed in contact with the circumference of the tire T to press the wire steel to completely press the wire steel to the tire.

And, the guide tube pipe is installed between the feed roller 20 and the air supply pipe 40 serves to prevent the flow of the wire steel to be transported.

Referring to the operation of the present invention configured as described above are as follows.

First, when the tire T driving motor 90 and the drum 50 driving stepping motor 60 are operated, the tire T rotates in the direction of the arrow by the rotational force of the motor 90, and the stepping motor ( The rotation force of the 60 is transmitted to the drum shaft 52 through the worm 71 and the worm wheel 72, which are the motor shaft 61 and the transmission means 70, so that the drum 50 rotates finely.

When the motor 21 as the driving source is operated in such a state, the two feed rollers 20 rotate and pull the wire steel W sandwiched therebetween, so that the wire steel wound on the krill 10 is gradually released. Transfer.

The wire steel W to be transported is cut into a predetermined length by the laser cutter 30 after passing through the guide tube 110.

The cut wire steel W is inserted into the air supply pipe 40 by dropping as shown in FIG. 4, and the inserted wire steel is inserted into the groove 51 of the drum 50 which is finely rotated by the pressure of air. The inserted wire steel is prevented from being separated by the clamp as shown in FIG. 5.

By the same operation, one cut wire steel is inserted into each groove of the drum.

The inserted wire steel is inclined to be inclined at an angle of about 22 to 24 ° to the surface of the tire while contacting the tire T through the open portion of the clamp 80, and the same operation is performed on the opposite side, The cut wire steel is attached to the surface of the tire in the form of an "X".

Wire steel bonded to the surface of the tire is pressed by the pressure roller 100 installed on the outside of the tire is firmly attached.

In the present invention, the above operation is repeated to attach the wire steel to the surface of the tire, the tire is completed, the tire is transferred to the next process to form the tread portion 201, the cut wire steel is finally It is embedded in the tread portion of the finished tire to be a tread belt 208 of the "X" shape.

As described above, the present invention reduces the existing space and place for installing 1,300 krill to a space for installing one krill, and the alignment device of about 1300 wire steels formed at regular intervals on the outer diameter of the drum. It can be easily aligned by using the groove and the air supply pipe. The tire is inclined at an angle of 22 to 24 °, and then the wire steel bonded to the surface is firmly attached to the surface through the pressure roller together with the driving of the tire.

Therefore, according to the present invention, it is a compact and automated device, and is easy to use, and when manufacturing a tire using the same, it is possible to simply supply and attach the wire steel for the tread belt in a small space, thereby reducing manufacturing cost, improving productivity and quality. It can contribute to improvement.

In addition, only one operator who can load and unload tires during the operation is required, and a number of machines can be installed and managed.

In summary, the present invention

First, the process of conveying, feeding, cutting, aligning and attaching wire steel can be simplified, and the structure of the device can facilitate the work.

Secondly, the production and installation of the device requires a small cost, the installation space is reduced, it is easy to move.

Third, since it can be manufactured and supplied quickly in a small space at a close distance of the automobile production plant, it is possible to reduce the logistics cost according to the existing long distance transportation.

Fourth, it is possible to manufacture tires at low manufacturing costs and secure competitiveness.

Claims (3)

In constructing a device for attaching the wire steel W, which is a material of the tread belt 208, to the surface of the tire when the tire T is manufactured, A krill (10) wound around the wire steel (W); Two feed rollers 20 which rotate by the motor 21 serving as a driving source and press the wire steel wound on the krill to feed at a constant speed; A laser cutter (30) for cutting the wire steel (W) transferred by the feed roller to a predetermined length; An air supply pipe 40 which transfers the cut wire steel at a pressure of air to one of the grooves 51 formed on the outer circumferential surface of the drum 50; A drum (50) having a groove (51) into which the wire steel supplied from the air supply pipe is introduced one by one and connected to a stepping motor (60) and a driving means (70) as a driving source; A clamp (80) installed outside the groove (51) of the drum to insert one cut wire steel (W) into each groove; The tire T is installed on the side of the drum at an angle of 22 to 24 ° to be inclined and rotated by the motor 90 as a driving source so that the wire steel W in the groove 51 is adhered to the surface at regular intervals. And; A pressure roller 100 installed at the periphery of the tire to completely attach the cut wire steel to the surface of the tire by pressing the wire steel bonded to the “X” shape; Tread belt manufacturing apparatus of the tire, characterized in that consisting of. The tread belt of a tire according to claim 1, wherein a guide tube pipe (110) is installed to prevent disturbance of the wire steel (W) transferred between the feed roller (20) and the air supply pipe (40). Manufacturing equipment. The worm 71 and the worm wheel 72 according to claim 1, wherein the transmission means 70 are installed on the drum shaft 52 and the motor shaft 61, respectively, and are connected to each other to transmit the rotational force of the stepping motor to the drum. Tread belt manufacturing apparatus of the tire, characterized in that consisting of.