KR100386641B1 - An apparatus for manufacturing the carcass ot tire - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a carcass formed by knitting a cord in order to maintain an internal pressure of a tire when a tire is manufactured.

The present invention is to be able to form a carcass at regular intervals inside the tire.

To this end, one code line reciprocates on the surface of a tire at regular intervals to perform a nighting operation to perform carcass. In a torus drum process, a tire shape is first formed and then a nighting operation is performed thereon. do.

The nighting device of the present invention requires a tire holding device and a driving device, and requires a conveying device, a feeding device and an attachment device for cords for nighting.

When manufacturing tires using this device, carcasses can be arranged at regular intervals, and since wefts across carcasses are not arranged, heat generation does not occur at the intersections of cord lines, thereby contributing to increased tire durability and rigidity.

Description

An apparatus for manufacturing the carcass ot tire}

The present invention relates to a carcass formed by kneading with a cord in order to maintain the internal pressure of a tire when the tire is manufactured.

More particularly, the present invention relates to a carcass carcass manufacturing apparatus for automating a carcass carcass manufacturing apparatus, thereby contributing to a reduction in manufacturing cost and improved productivity and performance.

In general, the tire of the vehicle is filled with air to support the external force in various directions in the state mounted on the vehicle, and serves to transmit the external force.

In addition, it contacts the ground to support the load and weight of the vehicle body, transmits the driving force of the engine to the road surface, and serves to protect the vehicle body by absorbing and mitigating the impact from the road surface, and transmitting the braking force of the brake to the road surface. Ensure safe driving.

1 and 2 are a cross-sectional view and a partially cutaway perspective 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, and a tread groove for securing a coefficient of friction with the road surface and maintaining orientation. Groove, 202, has many forms.

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 vehicle. To the tire.

In addition, the rim 204 is provided with an air injection valve for injecting air into the tire, and a plurality of bead wires 207 and tread belts for imparting toughness and tension to the tire inside the rubber layer. 208 and a carcass 206 which is a reinforcing material are embedded.

Of these, the tread portion 201 serving as a ground plane is a portion where wear is most severe when running, and the carcass 206 and the tread belt 208 described above are embedded therein.

The reason for installing the tread belt 208 and the carcass 206 is that when the tire is damaged by foreign matters while the vehicle is in contact with the ground while driving, the rapid leakage of the compressed air injected into the interior is prevented. To prevent and maintain the safety of the occupants.

Among these, the tread belt 208 is formed by densely embedding two different steel wires in the form of an "X" in the tread portion 201 of the tire 200, and the two staggered angles of the tires according to the characteristics of the tire. Will vary and will form during the manufacture of the tire.

To this end, the tread belt 208 is formed by embedding two layers of steel wires in an “X” shape in the tread portion in contact with the ground when the tire is manufactured.

The carcass 206 is provided inside the rubber layer of the tire 200 to maintain the internal pressure of the tire, and is formed of a layer having sufficient strength.

The carcass 206 is in the shape of a tire rather than a circular cross section, but the cross section of the carcass itself is a horseshoe type that ends at the bead portions on both sides instead of the closed cross section.

In general, the carcass 206 is formed by performing a nighting operation with a cord during the manufacture of a tire in order to maintain the rigidity of the tire and to prevent crushing during driving, and the nighting operation performed for maintaining the rigidity of the cord There are ways.

The stiffness of the cord is much greater than the stiffness of the rubber, so that the stress due to internal pressure is almost increased.

The role of the carcass 206 is a pressure vessel for maintaining the internal pressure of the tire as described above, and the tire is always under tension to rupture by extending the wall of the container, and the tension due to the internal pressure does not have a predetermined direction. Because it works in all directions, it must be formed using materials of sufficient strength to withstand these tensions.

In addition, since the cord constituting the carcass 206 must withstand all tensions, a material having no bending or compressive resistance may have a special structure to withstand such tensions.

The material of the carcass 206 is used by weaving the organic material horizontally and vertically, but such a tire has a very short lifespan because friction and heat generation are cut at the intersection of the horizontal and vertical cords (threads).

Therefore, it is desirable to produce a shape in which no friction occurs at the intersection between the cord and the cord.

The cord constituting the carcass in the tire is connected between the bead wires installed on the opposite side from the bead wire 207 on one side in the shortest distance, so that the cross section is continuously connected based on the tire driving direction.

Therefore, since the circumferential strength of the tire is maintained only by the rubber between the cord and the cord, when the air is filled, the rubber layer between the cord and the cord is extended and unfolded.

The tread belt 208 is a member inserted in multiple layers between the tread portion 201 and the carcass 206 to maintain the tire's circumferential strength.

This tread belt is formed of a rigid structure including rubber by using cords such as organic materials, fiber-glass, steel, and the like, arranged in the circumferential direction of the tire.

By the way, the manufacture of the conventional tire is intended for mass production, but the subdivision of the manufacturing process and the automation of the equipment is made to some extent, but these manufacturing facilities are enlarged, and there are complex disadvantages.

In addition, in order to manufacture a tire using such a facility, there is a problem in that a manufacturing cost increases due to the need for a large-scale automation facility complexed with a large area factory and a large number of workers.

That is, when looking at the caring work of the carcass 206 when manufacturing a conventional tire, first weaving the weft of 30mm interval on the 2600 slopes (thread spacing 1.0mm) by the raffia weaving machine of the textile weaving factory, the woven fabric It is heated to 250 ℃ to increase the rigidity and then sent to the tire manufacturing plant.

Looking at the cutting and attachment system of the fabric for installing the supplied fabric as a carcass on the tire, first cut the fabric in length and width to fit the circumferential length of the tire (200) to be produced and then attach it to the inner liner (Innerliner) Build a tire.

At this time, since the woven fabric is used as the carcass 206, the fabric woven in the warp and weft yarn is cut by friction and heat generation at the intersection of the warp and weft yarn by the pressing force and impact applied to the tire during driving. Very short lifespan

The manufacturing method of such carcass in order to maintain the rigidity of the tire

First, we must have a separate weaving factory and weaving facilities.

Second, even if the woven fabric is cut by a predetermined standard and installed on the surface of the tire, it is difficult to install at even intervals, and thus, it does not absorb internal pressure uniformly during driving.

Third, the aligned nighting cords are cut by friction and heat generation at the intersection of cords consisting of warp and weft yarns, resulting in very short tire life.

Fourth, the installation of the work is required to arrange the worker to check the progress of the process.

Therefore, such a conventional manufacturing apparatus is made to some extent, but due to the large size of the equipment itself and difficult to manufacture, it is necessary to increase the manufacturing cost and increase productivity and quality due to the excessive expenditure of cost and the installation of the equipment. There was a problem causing the degradation.

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem, and its technical problem is to provide a carcass nighting device having a small size and no phase weaving.

The nighting device according to the present invention does not require a weaving process and a factory, and performs a nighting operation with a carcass code, thereby greatly simplifying the entire process during the manufacture of a tire, and when the device is used, the tire is simply in a narrow space. In the manufacture of, the code can be kneaded, contributing to the reduction of manufacturing cost and the improvement of productivity and performance.

1 and 2 are cross-sectional views showing the structure of a general tire.

Figure 3 is a front view showing the overall configuration of the present invention

4 is a side view of the present invention

※ Explanation of code for main part of drawing

10: frame 20: guide

21: guide rail 30: needle transfer unit

31: guide block 32: spindle

33: needle 40: axis of rotation

50: hook portion 51: hook

60: tire drum 70: cord

The present invention for achieving the above object is to form a carcass at regular intervals in the interior of the tire.

To this end, one code line reciprocates on the surface of a tire at regular intervals to perform a nighting operation to perform carcass. In a torus drum process, a tire shape is first formed and then a nighting operation is performed thereon. do.

The nighting device of the present invention requires a tire holding device and a driving device, and requires a conveying device, a feeding device and an attachment device for cords for nighting.

When manufacturing tires using this device, carcasses can be arranged at regular intervals, and since wefts across carcasses are not arranged, heat generation does not occur at the intersection of cord lines, which contributes to increased tire durability and rigidity.

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

Figure 3 is a front view showing the overall configuration of the present invention, Figure 4 shows a side view.

As shown, the nighting device of the present invention is a frame made by assembling a plurality of section steels, and a frame 10 that firmly supports the entire device;

A cantilever-shaped guide 20 installed horizontally at an upper end of the frame and having a guide rail 21;

A guide block 31 capable of horizontal transfer along the guide rail, and a needle 33 installed at an end of the spindle 32 installed vertically to the guide block to hold the tire cord 70. Needle transfer unit 30;

A rotating shaft 40 rotatably installed horizontally below the guide 20 of the frame 10 and mounted with a tire drum 60 to manufacture a carcass;

A hook portion 50 installed on the frame to fix the cord to the tire drum of the rotating shaft; It consists of.

The frame 10 is a frame made by assembling a plurality of shaped steels to firmly support the entire apparatus of the present invention.

The cantilever-shaped guide 20 is horizontally installed at one side of the upper end of the frame, and the upper and lower guide rails 21 are attached to the upper and lower ends thereof.

The needle transfer unit 30 uses the LM type guide 20 for high speed and precision horizontal transfer of the guide block 31, and removes a dead point due to repeated rotation of the motor for vertical transfer. In order to achieve this, a double link structure is adopted. The linear motion (LM) guide 20 is a mechanical component generally used for guiding a linear motion system, and is a straight line in an automated machine, a machine tool and an industrial machine. It is widely used in transport movement. In addition, the LM guide 20 is bolted on a machined plane, has no clearance, and is used for a variety of purposes as a unit structure to obtain a high running accuracy. In particular, even if the tooth surface is not good, the use of the LM guide 20 greatly improves the accuracy of the whole machine, smooth linear motion is obtained, and does not affect the life of the LM guide 20. The linear UTP system uses rolling elements such as balls or rollers between the rails to make rolling movements, so the frictional resistance is reduced to 1/20 to 1/40 compared to sliding movements. In addition, since the starting friction is small, the stick slip does not occur, so that sub-micron transfer is also possible. In addition, the frictional resistance of the linear motion system varies depending on the type of linear motion system, the viscous resistance of the lubricant, the load on the linear motion system, the speed of motion, and the like.

The horizontal transfer of the needle transfer unit is provided with a drive device for applying a force so that the tie-mil belt, the LM guide 20, the guide block 31 can be transferred at a constant speed.

The tire cord 70 is continuously supplied by the needle transfer part 30.

The rotating shaft 40 is horizontally installed on the frame 10 below the guide 20 and supported by the bearing housing so as to be rotatable, and is rotated by a separate rotating device.

The rotating shaft includes a reducer and a driving motor for rotating the rotating shaft at a low speed, an apparatus for holding and releasing the tire drum, and a roller for attaching a cord 70 to the side of the tire drum 60.

Hook portion 50 is provided on the rotating shaft 40 of the frame 10 and has a hook 51 for fixing the cord to the tire drum (60).

The hook 51 serves to hold the cord 70 when the needle transfer unit 30 stops to change direction.

The hooks are provided on both sides of the tire drum mounted on the rotating shaft.

In addition, when the needle transfer unit 30 moves horizontally, the transfer distance is scanned to control the vertical movement of the spindle 32.

In addition, the control unit (not shown) controls each of the above parts to facilitate the operation.

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

First, the tire drum 60 is micro-rotated while being mounted on the rotation shaft 50.

At this time, the tire cord 70 is continuously supplied by the needle transfer unit 30.

In this state, when the spindle 32 of the needle transfer unit 30 descends, the roller grasps the cord 70 and pulls it to attach to the outer surface and the recess of the tire drum 80.

The needle feeder 30 catches the cord 70 at the end of the needle 33 of the spindle 32 when the spindle 32 is lowered and feeds further in the advancing direction to stop. 60 rotates the minute amount, and the needle feeder starts to feed in the opposite direction.

At this time, if the roller grasps the cord 70 by the sensing (Sense) when the spindle 32 of the needle transfer unit 30 is moved in the reverse direction, the spindle starts to rise, the roller is concave of the tire drum Attach the cords to the sides and sides.

Then, if the spindle is lowered by sensing while the needle feeder 30 is further transferred in the advancing direction, the roller on the side grasps the cord and attaches it to the outer surface and the recess of the tire drum, and the needle feeder lowers the spindle. The hook 51 catches the cord at the needle end of the spindle when it stops by feeding further in the traveling direction in one state, where the tire drum rotates the minute amount and the needle feeder starts to operate in the opposite direction.

At this time, if the roller grasps the cord by sensing when the spindle of the needle conveyance portion is transferred in the forward direction, the spindle starts to rise, and the roller attaches the cord to the concave and side surfaces of the tire drum.

The needle feeder starts to lower the spindle by sensing during the feed in the forward direction.

In the present invention, this operation is repeated to night the code 70.

That is, the needle transfer unit 30 attaches the tire cord to the tire drum while repeatedly transporting A-> B-> A of FIG. 3, wherein a thin rubber having a high viscosity is attached to the surface of the tire drum. There is no sliding between the surface and the cord.

In addition, the hook 51 prevents the cord from falling off when the needle feeder arrives at the "A" and "B" positions and immediately returns to the "A" position, thereby attaching the cords to both ends of the tire drum.

Since the hook device 50 provided with the hook 51 is provided in the positions "A" and "B", continuous nighting is possible.

The present invention described above in order to manufacture a car tire is built-in

First, the process of transporting, supplying, aligning and attaching the cord wire for carcass nighting on the surface of the tire drum is simple, and the structure of the device is simple.

Secondly, the device is compact, so manufacturing and installation costs are low.

Third, the installation space is small and easy to move.

Fourth, the logistics cost of long-distance transportation is reduced by manufacturing and supplying quickly in a small space near a car production plant.

Fifth, it can contribute to reducing tire manufacturing cost and improving quality and productivity.

Therefore, the use of such a device does not arrange the arrangement of the carcass and the weft across the carcass, which is a problem in the conventional method, so that the performance and durability of the tire can be increased.

Claims (6)

A frame made by assembling a plurality of section steels, the frame 10 firmly supporting the entire apparatus, a cantilever-shaped guide 20 horizontally installed at one upper end of the frame and having a guide rail 21, and the Needle consisting of a guide block 31 capable of horizontal transfer along the guide rail, and a needle 33 installed at the end of the spindle 32 installed vertically to the guide block to hold the tire cord 70. Rotating shaft 40 and the rotating shaft 40 is installed in the lower portion of the guide 20 of the frame 10 to be mounted horizontally and the tire drum 60 to manufacture the carcass and the rotating shaft is installed on the frame In the carcass manufacturing apparatus of a tire comprising a hook portion 50 for fixing a cord to a tire drum of The needle transfer unit 30, The LM type guide 20 is used for high speed and precision horizontal movement of the guide block 31, and the double link for removing dead point due to repeated rotation of the motor for vertical movement. In addition to adopting a link structure, the horizontal transfer of the needle transfer part 30 includes a driving device for applying a force to transfer the timing belt, the LM guide 20 and the guide block 31 at a constant speed. The rotating shaft 40, It is installed horizontally on the frame 10 below the guide 20 and is supported by the bearing housing so as to be rotatable. The gear reducer and the driving motor for rotating the rotating shaft at a low speed and tires are installed by the separate rotating device. An apparatus for holding and releasing the drum, a roller for attaching the cord 70 to the side of the tire drum 60, The hook portion 50, It is provided on the rotary shaft 40 of the frame 10 and provided with a hook 51 for fixing the cord to the tire drum 60, the hook 51 is a needle transfer unit 30 is stopped to change direction Carcass manufacturing apparatus of the tire, characterized in that when holding the cord (70). delete delete delete delete delete