KR101145188B1 - Vehicle tire manufacturing method, Tread housing and Green tire manufacturing apparatus - Google Patents

Abstract

The present invention relates to a method and apparatus for manufacturing automobile tires, and more particularly, to a method and apparatus for manufacturing automobile tires characterized by the manufacturing method of green tires in a step before vulcanization. In the related art, since the inner liner carcass, the belt, and the tread have been sequentially stacked on the drum, the stacked elements are overlapped at the joints, thereby degrading the tire uniformity. In the tread, especially the tread and other elements, the inner part of the tread is wound with a flexible jointless belt that limits the outer diameter of the tire, and a belt layer, a carcass layer or an innerliner layer can be installed therein. By providing a tire that does not have a joint, it is possible to improve the durability and uniformity of the tire.

Description

Vehicle tire manufacturing method, tread housing and tire manufacturing apparatus for automobile tire manufacturing {Vehicle tire manufacturing method, Tread housing and Green tire manufacturing apparatus}

BACKGROUND OF THE INVENTION Field of the Invention [0001] The present invention relates to a method for manufacturing a tire for a vehicle and a device for manufacturing the same, and in particular, a method for manufacturing a tire for an automobile characterized by a method for manufacturing a green tire in a step before a vulcanization operation, and a device for manufacturing a green tire. A coupling device and a device for manufacturing green tires.

In manufacturing tires, a rubber composition containing rubber, carbon black, sulfur and other rubber chemicals is extruded to form a tread or sidewall, and the rubber composition is rolled to form an inner liner or the like, followed by molding. Wind the inner liner on the drum and cut it by the outer diameter of the drum and join the two ends together.All components of the inner liner including the rim cushion, carcass, sidewall, bead filler including bead filler, belt, tread, etc. The green tires (green tires) are prepared by laminating them, and the prepared green tires are placed in a mold and subjected to heat and pressure for a predetermined period of time. Bonding increases elasticity and tensile strength and results in tires that are resistant to each chemical and temperature. The.

In manufacturing the raw tire, in order to attach the tire manufacturing element to the drum as described above, the tire corresponds to at least the constituent elements by cutting the extruded or rolled necessary element to the desired length, winding it on the drum, and then joining both ends. It will have more than one joint.

As such, when the joints have a large number of joints, the joints are changed in thickness and a step is generated, which reduces the uniformity of the tire, and also increases the risk of OPEN SPLICE at the joints. It will have a problem such as deterioration of durability.

In view of the fact that each element constituting the tire does not have a joint, a problem such as deterioration of uniformity due to the joint will not occur. Accordingly, the present invention provides a carcass or a belt that is not composed solely of rubber. Such composite devices implement a BUTT JOINT structure instead of OVERLAP JOINT at their joints, and the components composed of compound rubbers are formed by extrusion or injection molding into cylindrical bodies having no joints. To solve the problem of providing a tire manufacturing method that can improve the uniformity without having a laminated joint portion.

Furthermore, the present invention is intended to solve the problem of providing an apparatus for performing the above manufacturing method.

The present invention to solve the above problems,

First step: a basic semi-finished product preparation step of preparing a basic semi-finished product for installing basic semi-finished products such as inner liner, sidewall, and carcass on the band drum,

Step 2: preparing a tread + 3 belt for installing a tread on the inner surface of the tread housing and winding a jointless belt on the inner surface of the tread;

Step 3: preparing the first and second belt layers attaching the first belt layer to the diagonal belt belt and attaching the second belt to the diagonal belt belt layer;

Step 4: Shrink the four-belt drums with one or two belt layers and insert the "Tread + 3 belts" prepared in step 2 to the outside of the two-belt drum and expand the diagonal two-belt drum again. To the second belt layer, shrink the diagonal belt 1 belt drum, insert the diagonal belt belt inside the second belt layer, and expand the diagonal belt belt to expand the first belt inside the second belt layer. And installing the main product by installing the floor.

Step 5: After installing the basic semi-finished product of the first stage in the shaping drum, the shaping step of installing bead bundles at both ends and joining the main product prepared in the fourth step between the bead bundles

To provide a raw tire manufacturing process consisting of,

It provides a tire manufacturing method for vulcanizing the raw tire prepared by the above process to complete the tire.

  In order to carry out the method of the present invention as described above, the present invention goes from above,

It provides a tread housing for performing the second stage process, provides a shaping drum for performing the fifth stage process, a band drum for performing the first stage process, and a company for performing the third stage process. The linear belt drum is combined to provide a raw tire manufacturing apparatus.

Tires manufactured by the method of the present invention as described above can be improved because the components, in particular the tread portion is not bonded to the overlap does not have a laminated joint portion to improve the uniformity. In particular, devices made of a rubber composition can eliminate the fear of occurrence of OPEN SPLICE at the junction without having the junction, and can eliminate the fear of appearance defects due to the overlap of the junction. There is an effect of improving the durability due to the reduction of the rupture phenomenon, such as the improvement of Yumi formity.

1 is a perspective view of a band drum of the present invention.
2 is an explanatory diagram of a first step of the present invention;
3 is an explanatory diagram of a second step of the present invention;
4 is an explanatory diagram of a third step of the present invention;
5 is an explanatory diagram of the fourth and fifth steps of the present invention.

The present invention

First step: the basic semi-finished product preparation step of preparing the basic semi-finished product 10 by wrapping the inner liner 11, the carcass 12, and the sidewall 13 on the band drum 1;

Second step: the tread 21 is installed on the inner surface of the tread housing 2 and the "tread + 3 belts" 20 preparing step of winding the jointless belt 22 on the inner surface of the tread 21 is provided;

Step 3: preparing the first and second belt layers 310 and 320 for attaching the first belt and the second belt to the diagonal belt belt 31 and the diagonal belt belt 32;

Step 4: Insert the "tread + 3 belt" (20) prepared in the second step in the center of the outer side of the 2-belt layer 320 of the diagonal 2-belt drum 32, and then expands the diagonal 2-belt drum 32 The two-belt layer 320 is coupled to the inside of the tread, and then the diagonal one-belt drum 31 is positioned inside the two-belt layer 320 and the diagonal one-belt drum 31 is expanded to expand the two-belt layer 320. 1) the main product preparation step of preparing the main product 40 by attaching the belt layer 310 inside.

Step 5: Shaping step of installing the basic semi-finished products of the first stage in the shaping drum, then installing the bead bundles at both ends and joining the main plate products prepared in the fourth step between the beads.

It is characterized by providing a raw tire manufacturing process consisting of, and provides a tire manufacturing method for vulcanizing the raw tire produced in this way to complete the tire.

Tread housing 2 is required to install the jointless belt on the inner surface of the tread in the second step process.

As shown in FIG. 3, the tread housing 2 includes a cylindrical rail 202 installed on the base 201 and a rail 202 mounted on the cylindrical rail 202 to rotate on the rail 202. Segment 205, which is installed in the rotating cylinder 203, the inside of the rotating cylinder 203 and installed in the inner end of the mover 204 penetrates the rotating cylinder 203 to move in and out, and is installed in the segment 205 It is composed of a separate belt attacher for installing the jointless belt (22) on the tread (21). The belt attacher is a compression roller for compressing the joint roll belt 22 wound around the belt roll 206 for supplying the joint belt 22 and the joint belt 22 wound around the belt roll 206 on the tread 21. 207 and a moving device 2070 for gradually moving the joint belt 22 laterally so that the joint belt 22 is not rolled up as the joint belt 22 is wound around the tread 21. Include. Since the moving device 2070 is already known and widely used as seen in the moving device in the device for winding the jointless belt continuously on the belt layer in the conventional tire manufacturing device, its illustration and description are omitted here. Rotating cylinder 203 requires a rotary device for rotating it, the accompanying drawings, the outer surface of the gear 208 and the rotating cylinder 203 installed on one side of the base 201 as part of one embodiment of the rotating device Tooth 201 is shown installed.

The diagonal direction of the diagonal 1-belt drum 31 for installing the first belt is formed in the same direction as the cord installation direction in the 1-belt layer 310, and the diagonal 2-belt drum 32 for installing the second belt is installed. The diagonal direction is formed in the same direction as the cord installation direction in the two belt layer 320.

The reason why the diagonal direction of the diagonal belt drum and the diagonal direction of the cord installed in the belt installed in the drum is the same is to allow the cord installed on the drum to easily contract and expand due to the expansion of the drum. In other words, if the belt is attached to the drum and the inside of the tread is attached, the outer diameter of the belt is not much different from the inner diameter of the tread + 3 belt, so that the diameter of the belt drum should be increased to solve the problem of the tread housing entering the belt drum. The belt wound around the drum has a diagonal wire inside, so when the drum shrinks and expands, when the drum's diagonal direction is different from the belt's cord direction, the belt can easily contract. This is to ensure that it is not disturbed because it does not expand.

The shaping drum 5 is provided with a bladder 51 at the center of the left and right sides of the drum.

Referring to the embodiment of the process for producing a raw tire by the method of the present invention using the apparatus of the present invention as follows.

Example

First stage process:

    An inner liner 11, a carcass 12, a sidewall 13, and the like are wound around the band drum 1 to prepare a basic semi-finished product 10.

Band drum 1 is composed of a plurality of segments (101) are combined, each segment 101 is provided with an operating device for advancing outward and retracted again as shown in the figure. Such actuators are well known in the art and their description and illustration are omitted here.

Second stage process:

By retracting the belt drum, the extruded, cut or injection-molded cylindrical tread 21 is inserted into a drum (not shown) and the mover 204 of the tread housing 2 is retracted outward so that the segment 205 After increasing the inner diameter of the housing to be the inner surface of the, the tread housing (2) is moved to the center of the drum on which the tread (21) is installed, and then (2) the advancing the movers (204) inwardly to segment (205). ), The segments 205 firmly hold the tread 21, space the drum away from the tread housing 2, and then attach the jointless belt to the inner surface of the tread 21.

    In attaching the jointless belt, the jointless belt 22 wound around the belt roll 206 while the rotary cylinder 203 is rotated by a rotating device is released, and the jointless belt 22 is tread by the pressing roller 207. (21) Squeezed to the inner surface, the joints belt 22 is spirally wound by gradually moving the pressing roller 207 laterally with the moving device 2070 in the beginning and the end to the garden, and in other parts. .

The present invention is characterized in that the process of first installing the jointless belt 22 on the inner surface of the tread is performed. That is, in the related art, since the jointless belt is installed on the first and second belt layers 3 and the tread rubber layer is overlaid, it is easy and convenient to install the belt layer inside the tread rubber layer. However, in the present invention, since the tread rubber layer is formed in a cylindrical shape and a belt layer must be provided therein, it is not easy to install the belt layer inside the tread rubber layer. To install the cylindrical tread rubber layer outside the belt layer, the belt layer having a diameter smaller than the diameter of the tread rubber layer and expandable is inserted into the tread rubber layer, and then expands the belt layer to combine the tread and the belt layer as described below. However, since the belt layer of the jointless belt 22 is not allowed to expand in the radial direction, after forming the jointless belt layer, the jointless belt layer is installed inside the tread rubber layer, and then the jointless belt layer. It is not possible to inflate the jointless belt layer and the tread layer by inflating it. Thus, in providing the jointless belt layer inside the tread rubber layer, the present invention provides a technique for compressing and installing the jointless belt 22 on the inner surface of the tread 21. Thus, the present invention provides a second step process of providing a "tread + 3 belt" 20 to be wound around the endless belt 22 is installed on the inner surface of the tread (21).

Third stage process:

As shown in FIG. 4A, the first and second belts are attached to the diagonal 1 and 2 belt drums 31 and 32 to provide the first and second belt layers 310 and 320.

The diagonal 1 and 2 belt drums 31 and 32 are divided into a plurality of segments 30, and each segment 30 is formed in a diagonal shape so as to be in contact with the neighboring segment 30 and the diagonal line 301. Each segment 30, like the segments 10 of the band drum 1, has an actuating device which allows it to go outward and retract again.

Step 4: Insert the "tread + 3 belt" (20) prepared in the second step in the center of the outer side of the 2-belt layer 320 of the diagonal 2-belt drum 32, and then expands the diagonal 2-belt drum 32 The two-belt layer 320 is coupled to the inside of the tread, and then the diagonal one-belt drum 31 is positioned inside the two-belt layer 320 and the diagonal one-belt drum 31 is expanded to expand the two-belt layer 320. ) 1 belt layer 310 is attached to the inside to prepare the main semi-finished product 40.

5th step process: After installing the basic semi-finished product of the first stage in the shaping drum (5, Shaping drum), bead bundles are installed at both ends, and the main semi-finished product 40 prepared in the fourth step is coupled between the bead bundles on both sides. However, by inflating the bladder 51 installed in the center of the shaping drum 5, the central part of the basic semi-finished product 10 is bonded to the center of the main semi-finished product 40 to produce a raw tire, the raw tire is vulcanized mold Similar to the internal shape of the.

Sixth Step Process:

The raw tire prepared as described above is heated and pressurized for a predetermined time according to a known vulcanization process, and the compounded rubber reacts with a drug, resulting in a strong and strong bond between rubber molecules, thereby increasing elasticity and tensile strength and increasing the strength of each drug and temperature. Make sure the tires are resistant.

Band drum
101. Segments
10. Basic semi-finished products
11. Inner Liner
12. Carcass
13. Sidewall
2. Tread Housing
201.Expectation
202.Rail
203. Tumbler
204. The mover
205. Segments
206. Belt Roll
207. Crimp Roller
2070. Mobility.
20. Tread + 3 belts
21.Tread
22. Jointless belt
31. 1 diagonal belt drum
310.1 belt layer
32. Diagonal 2-Belt Drum
320. 2 belt floor
40. Main products

Claims (6)

First step: the basic semi-finished product preparation step of preparing the basic semi-finished product 10 by wrapping the inner liner 11, the carcass 12, and the sidewall 13 on the band drum 1;
Second step: preparing a "tread + 3 belts" (20) by winding the joint belt (22) on the inner surface of the tread 21,
Step 3: preparing the first and second belt layers 310 and 320 for attaching the first belt and the second belt to the diagonal belt belt 31 and the diagonal belt belt 32;
Step 4: Insert the "tread + 3 belt" (20) prepared in the second step in the center of the outer side of the 2-belt layer 320 of the diagonal 2-belt drum 32, and then expands the diagonal 2-belt drum 32 The two-belt layer 320 is coupled to the inside of the tread, and then the diagonal one-belt drum 31 is positioned inside the two-belt layer 320 and the diagonal one-belt drum 31 is expanded to expand the two-belt layer 320. Main plate product preparation step of providing a main product 40 by attaching a belt layer 310 inside the).
Step 5: After installing the basic semi-finished product of the first stage in the shaping drum (5, Shaping drum), bead bundles are installed at both ends, and the main semi-finished product 40 prepared in the fourth step is coupled between the bead bundles. Shaping Step
To provide a raw tire manufacturing process consisting of,
A method for manufacturing a tire for an automobile, characterized in that the tire is completed by vulcanizing the raw tire manufactured in the fifth step.
The method of claim 1, wherein the step of preparing the "tread + three belts" 20, the belt drum is retracted to fit the cylindrical tread and expanded again to maintain the original diameter, the mover 204 of the tread housing (2) ) Retracts outward to allow segments 205 to retreat to expand their internal space, and then move the tread housing to the center of the belt drum to position the cylindrical tread 21 inside the segment 205 and again Advancing the 204 inwards to position the segments 205 in place allows the segments 205 to hold the tread 21 firmly, and is wound on the belt roll 206 while rotating the rotary cylinder 203 with a rotator. Loosen the joint belt (22) and press the joint belt (22) to the inner surface of the tread (21) with a pressing roller (207), the start and end of the garden, and the other part of the roller (2070) Gradually move (207) laterally As a method of manufacturing a tire for a car, characterized in that to be a joint-less belt 22 wound in a spiral.
Cylindrical rail 202 provided on base 201, rotary cylinder 203 installed on cylindrical rail 202 and rotating on rail 202, and installed inside rotary cylinder 203 and rotating A belt attaching machine for installing the jointless belt 22 in the segment 205 installed at the inner end of the mover 204 penetrating the tradition 203 and advancing in and out, and the tread 21 provided at the segment 205. Tread housing for automobile tire manufacturing, characterized in that consisting of.
4. The belt attaching apparatus according to claim 3, wherein the belt attaching machine has a joint roll belt (22) wound around the belt roll (206) for supplying the joint belt (22) and a joint roll belt (22) wound around the belt roll (206). As the compression roller 207 and the jointless belt 22 are wound on the tread 21, the jointless belt 22 is gradually moved laterally so that the jointless belt 22 is not rolled up. Tread housing for automobile tire manufacturing, comprising a moving device (2070).
The band drum 1 divided into a plurality of segments by winding the inner liner 11, the carcass 12, the sidewall 13, and the like, and providing the basic semi-finished product 10,
A tread housing (2) for installing a tread (21) on the inner surface and providing a "tread + 3 belt" (20) installed by winding the jointless belt (22) on the inner surface of the tread (21),
The first belt and the second belt are attached to provide the first and second belt layers 310 and 320, and the diagonal lines are formed by a plurality of segments divided by diagonal lines in the same direction as the cord installation direction in the first and second belts. 1, 2 belt drums (31, 32),
An apparatus for manufacturing a tire for automobile tires, characterized in that it comprises a shaping drum (5) having a bladder (51) in the center of the left and right sides.

The tread housing (2) according to claim 5, wherein the tread housing (2) is provided with a cylindrical rail (202) provided on the base (201), and a rotating cylinder (203) mounted on the cylindrical rail (202) to rotate on the rail (202). And a segment 205 installed inside the rotary cylinder 203 and installed at an inner end of the mover 204 which penetrates the rotary cylinder 203 and moves back and forth, and the tread 21 installed at the segment 205. The tire manufacturing apparatus for automobile tires, characterized by comprising a belt attacher for attaching the jointless belt (22) to.

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