KR101673446B1 - Device of manufacturing seamless tyre-element rubber - Google Patents

Device of manufacturing seamless tyre-element rubber Download PDF

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Publication number
KR101673446B1
KR101673446B1 KR1020150055158A KR20150055158A KR101673446B1 KR 101673446 B1 KR101673446 B1 KR 101673446B1 KR 1020150055158 A KR1020150055158 A KR 1020150055158A KR 20150055158 A KR20150055158 A KR 20150055158A KR 101673446 B1 KR101673446 B1 KR 101673446B1
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KR
South Korea
Prior art keywords
rubber
tire
unit
knife
knife module
Prior art date
Application number
KR1020150055158A
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Korean (ko)
Other versions
KR20160124491A (en
Inventor
김정현
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금호타이어 주식회사
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Priority to KR1020150055158A priority Critical patent/KR101673446B1/en
Publication of KR20160124491A publication Critical patent/KR20160124491A/en
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Publication of KR101673446B1 publication Critical patent/KR101673446B1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D30/00—Producing pneumatic or solid tyres or parts thereof
    • B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
    • B29D30/08—Building tyres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D30/00—Producing pneumatic or solid tyres or parts thereof
    • B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
    • B29D30/08—Building tyres
    • B29D30/20—Building tyres by the flat-tyre method, i.e. building on cylindrical drums

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Tyre Moulding (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

The present invention discloses an apparatus for manufacturing seamless rubber for a tire.
According to the apparatus for producing a rubber for a seamless tire according to the present invention, there is provided an apparatus for manufacturing a rubber for a tire, comprising a rubber composition mixture input portion, a rubber composition extruding portion and a rubber molding tool for a tire, An inner knife module disposed inside the outer knife module and having a circular drum shape, and an inner knife module disposed inside the drum of the inner knife module, And a rotating part for changing a circular periphery of the knife module. According to this feature, it is possible to remove the joining part of the rubber for a tire such as a tread rubber, a carcass ply, and a belt, So that the rupture can be prevented in advance while the vehicle is running. Depending on the tire type, Numerous molding detention which can be replaced by one which can reduce manufacturing costs and improve its efficiency.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a seamless tire-

More particularly, the present invention relates to an apparatus for manufacturing seamless rubber, and more particularly, to a tireless tire manufacturing apparatus which removes the joining portions of tire rubber such as tread rubber, carcass ply, and belt, The present invention relates to an apparatus for manufacturing seamless rubber for a tire which can prevent a rupture during a vehicle operation and can replace a large number of molding tools required depending on the type of tire, .

Conventional tires are produced by extruding a rubber composition obtained by mixing carbon black, silica, sulfur and other rubber chemicals with natural or synthetic rubber or a reinforcing agent to form treads or sidewalls, rolling the rubber composition, A bead bundle including belts, carcasses, sidewalls, and bead fillers, a belt, a belt, and the like are formed on the inner liner by winding the inner liner on the forming drum, cutting the same as the outer diameter of the drum, A green tire (green tire) is prepared by laminating all constituent elements such as a tire and a tread in the same manner, and the prepared green tire is put into a mold and heat and pressure are applied, Strong and firm bonds are formed between rubber molecules to increase the elasticity and tensile strength, It is prepared a tire having resistance to Fig.

In the case of manufacturing such a green tire, in order to attach the material for tire manufacturing to the drum as described above, the material to be extruded or rolled is cut according to the length according to the model specification, wound around the drum, And have a number of joints corresponding to the number of materials.

Inevitably, a plurality of joining portions inevitably have different thicknesses and steps, thereby reducing the uniformity of the thickness and length of the tire, deteriorating the appearance of the tire, deteriorating durability such as rupture during vehicle operation at the joining portion, Of the population.

In order to solve such a problem, Korean Patent Laid-Open Publication No. 2011-0125423 discloses a structure in which a jointless belt is wound and installed, and a belt layer, a carcass layer and an inner liner layer can be installed therein. However, There are limitations in solving the problem.

Therefore, it is possible to remove the junctions of the rubber for tires such as tread rubber, carcass ply, and belt, which are the laminated materials of the tires, to prevent the treads from being broken while the vehicle is running, And to provide an apparatus for manufacturing seamless rubber for a tire which can reduce the manufacturing cost and improve the efficiency by replacing a large number of necessary molding tools with one.

In order to solve the above technical problems, the present invention provides an apparatus for manufacturing a rubber for a tire, comprising a rubber composition mixture input portion, a rubber composition extruding portion, and a rubber molding sleeve for a tire, wherein the molding sleeve has a circular drum shape An inner knife module disposed inside the outer knife module and having a circular drum shape, and an inner knife module disposed inside the drum of the inner knife module, And a rotating part for changing the circumference of the circular shape.

According to an embodiment of the present invention, the outer knife module includes a plurality of unit outer knives connected to each other, wherein the inner knife module includes a plurality of unit inner knives connected to each other, The inner knife may be interdigitated.

According to another embodiment of the present invention, the fitting engagement may be such that the feet of the neighboring unit knife are interlaced with each other, and moved or moved along the center plate.

According to another embodiment of the present invention, the unit outer knife or the unit inner knife may be an elastic material whose curvature changes according to the curvature of the variable circular drum shape.

According to another embodiment of the present invention, an external knife mover may be provided for moving the unit knife in the unit outer knife of the outer knife module.

According to another embodiment of the present invention, the rotary knob may include an internal knife mover which is coupled to the rotary unit so that one end of the rotary knife is rotatable and the other end of which is coupled to the unit inner knife.

According to the apparatus for manufacturing a rubber for a seamless tire according to the present invention, it is possible to remove the joining portions of rubber for tires such as tread rubber, carcass ply, and belt, which are laminated materials of the tire, It is possible to prevent rupture during operation, and it is possible to replace a large number of molding tools required according to the type of tire by one, thereby reducing the manufacturing cost and improving the efficiency.

Fig. 1 is a configuration diagram showing an overall configuration of a manufacturing apparatus according to the present invention,
Fig. 2 is a perspective view showing the molding tool of the present invention,
Fig. 3 is a perspective view of the foot of the body portion separated around the center plate,
FIG. 4 is a diagram illustrating a shape in which a circular perimeter is increased or decreased by fitting adjacent foot portions,
FIG. 5 is a view showing another embodiment of the present invention,
6 is a view showing a state in which the circumference of the inner and outer knife modules is reduced,
FIG. 7 is a view showing an increase in the circumference of the inner and outer knife modules.

Hereinafter, the present invention will be described in more detail.

It is to be noted that the technical terms used in the present invention are used only to describe specific embodiments and are not intended to limit the present invention, and the technical terms used in the present invention are defined in the present invention in a different sense It is to be understood that the present invention is not intended to be construed in a way that is generally understood by a person having ordinary skill in the art to which the present invention belongs, , It should be understood that technical terms that can be understood by a person skilled in the art are replaced with technical terms.

In addition, the general terms used in the present invention should be interpreted according to a predefined or prior context, and should not be construed as being excessively reduced.

In addition, the singular forms "a", "an," and "the" include plural referents unless the context clearly dictates otherwise. For example, the terms "comprise" It is to be understood that the various steps need not necessarily be construed as encompassing all, some of the elements or portions of the steps may not be included, or may include additional elements or steps.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, wherein like reference numerals refer to like or similar elements throughout the several views, and redundant description thereof will be omitted.

FIG. 2 is a perspective view of a molding tool according to the present invention, FIG. 3 is a perspective view of a body part separated around a center plate, FIG. FIG. 5 is a view showing another embodiment of the present invention, and FIG. 6 is a cross-sectional view of an inner / outer knife module according to another embodiment of the present invention. FIG. 7 is a view showing a state in which the circumference of the inner / outer knife module is increased. Referring to FIG. 7, the apparatus for manufacturing a rubber for a seamless tire according to the present invention comprises a rubber composition mixture input A manufacturing apparatus for a tire for a tire including a part (100), a rubber composition extruding part (200), and a rubber molding insert (300) for a tire, characterized in that the molding insert An outer knife module 310 which is capable of varying the circumference of the inner knife module, a circular inner drum knife module 320 disposed inside the outer knife module and having a circular drum shape, And a rotation unit 330 for rotating the inner knife module and changing the circular periphery of the inner knife module.

The rubber composition mixture input portion 100 is mixed with the rubber composition extruding portion 200 and fed through the green tire in the following process to form a finished tire of natural rubber or synthetic rubber as well as a reinforcing material such as carbon black or silica, And a rubber composition mixture containing various functional additives such as an oil is fed to the extruder.

In addition, the rubber composition extruding unit 200 produces a rubber composition in a phase which can be molded by uniformly mixing the rubber composition mixture, and supplies rubber to the molding unit 300 at a constant speed and pressure.

The rubber material supplied through the extrusion part 200 is discharged between the outer knife module 310 and the inner knife module 320 of the molding tool 300 according to the present invention to produce a rubber for a seamless tire .

The outer knife module 310 has a circular drum shape and is capable of varying a circular periphery. The outer knife module 310 is spaced apart from the outer knife module, and the inner knife module 320, which has a circular drum shape, The circumference can be variable.

Here, the inner knife module 320 is changed by the rotating part, and the rotating part 330 is disposed inside the drum of the inner knife module and rotates to vary the circular periphery of the inner knife module.

Therefore, it can be seen that the tire rubber discharged through the variable inner / outer knife modules 310 and 320 can be replaced with various kinds of moldings according to various sizes of tires, which is superior in manufacturing cost and efficiency .

The outer knife module 310 includes a plurality of unit outer knives 312 connected to each other. The inner knife module 320 includes a plurality of unit inner knives 322 connected to each other, The unit knives 312 and 322 are intertwined with each other so that the foot portions 3121 and 3221 of the adjacent unit knives 312 and 322 are staggered with each other, It can be moved or moved to slide combination.

The foot portions 3121 and 3221 are protruding pieces protruding from the body portions 3122 and 3222 of the unit knife toward the neighboring unit knife and have grooves G and long holes H, The protrusions LO extend and retreat along the grooves LH with the grooves LH and the protrusions LO on the sides of the adjacent foot portions 3121 and 3221 and the foot portions slide together to form the unit knives 312 And 322, and the position of the center plate or the slide-coupled portion is a force point, so that the unit knife exhibits elasticity so as to exhibit various curvatures of the rubber for a tire. Thus, the rubber for a tire corresponding to the sizes of various tires Can be produced.

Here, the inner / outer knife modules 310 and 320 have a circular drum shape that is varied to change the curvature. Therefore, the unit outer knife or the unit inner knife may be formed using an elastic material deformed according to a curvature of the circular drum shape Such an elastic material can be a resin material having heat resistance higher than the melting or molding temperature of the rubber for a tire, and may be a material having elasticity that is easily changeable along a circular shape even in the case of a metal material.

The outer knife module 314 may be provided with an outer knife mover 314 for moving the outer knife module 310 to and from the unit outer knife 312. The outer knife mover 314 is advanced or retracted toward the center of the circular drum, The actuator A may be provided at one end with an actuator A to advance or retreat the unit outer knife 312 coupled to the other end to reduce or extend the circumference of the circular drum, and the actuator A surrounds the outer knife module May be fixed to the detention case 340.

The crotch case 340 may have a variety of structures for supplying rubber raw materials for a tire between the inner and outer knife modules 310 and 320 as well as the casing and the role as a connection passage with the extrusion portion 200, A precision control motor (not shown) or a support (not shown) for imparting a rotational force to the rotation part 330 disposed at the center of the circular drum can be fixed.

The unit inner knife 322 may be provided with an inner knife 350 coupled to the rotary unit 330 so that one end of the inner knife 322 is pivotally coupled and the other end of the unit inner knife 322 is pivotally coupled. The other end of the circular drum 3223 can be connected to the ring 3223 and the other end can be connected to the unit shaft 332 provided in the rotary unit. (In the clockwise direction, or in the counterclockwise direction), as a matter of course.

The control part controls the movement of the actuator A in the forward and backward directions of the actuator A and the rotation of the rotation part 330. [ (T, t) of the inner / outer knife modules (310, 320) and the mutual interval (Tt) by adjusting the direction and the rotation angle of the inner and outer knife modules .

A rubber composition mixture inlet port 100, a rubber composition extrusion section 200,
Forming knife 300, outer knife module 310,
A unit outer knife 312, a foot 3121,
A body portion 3122, an external knife slider 314,
An inner knife module 320, a unit inner knife 322,
A foot portion 3221, a body portion 3222,
A ring portion 3223, a rotation portion 330,
A unit shaft 332, a detaching case 340,
Inner knife mover 350, rubber 400 for tire,
Actuator A, groove LH,
The protruding jaw L0, the inner knife module t,
The outer knife module T

Claims (6)

delete An apparatus for manufacturing a rubber for a tire, comprising a rubber composition mixture input portion, a rubber composition extrusion portion, and a rubber molding insert for a tire,
The shaping tool
An outer knife module having a circular drum shape and capable of varying its circumference;
An inner knife module spaced apart from the outer knife module and having a circular drum shape; And
And a rotating part disposed inside the drum of the inner knife module and rotating to change the circular periphery of the inner knife module,
The outer knife module includes a plurality of unit outer knives connected to each other. The inner knife module includes a plurality of unit inner knives connected to each other. The unit outer knives or the unit inner knives are mutually fitted Of the tire.
3. The method of claim 2,
Wherein the fitting is performed such that foot portions of neighboring unit knives are fitted to each other and move to slide engagement between the inserted foot portions or move along the center plate.
3. The method of claim 2,
Wherein the unit outer knife or the unit inner knife is an elastic material whose curvature changes according to the curvature of the circular drum shape varying.
3. The method of claim 2,
Wherein the outer knife module is provided with an outer knife mover for advancing and retracting to and from the unit outer knife of the outer knife module.
3. The method of claim 2,
And an inner knife coupled to the rotary unit so that one end thereof is pivotable and the other end is pivotally coupled to the unit inner knife.
KR1020150055158A 2015-04-20 2015-04-20 Device of manufacturing seamless tyre-element rubber KR101673446B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150055158A KR101673446B1 (en) 2015-04-20 2015-04-20 Device of manufacturing seamless tyre-element rubber

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150055158A KR101673446B1 (en) 2015-04-20 2015-04-20 Device of manufacturing seamless tyre-element rubber

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KR20160124491A KR20160124491A (en) 2016-10-28
KR101673446B1 true KR101673446B1 (en) 2016-11-08

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Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR960013639A (en) * 1994-10-17 1996-05-22 홍건희 Manufacturing method of automobile tire
KR101145188B1 (en) * 2010-05-13 2012-05-14 이강배 Vehicle tire manufacturing method, Tread housing and Green tire manufacturing apparatus

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