KR101812255B1 - System for preheating tire mold - Google Patents

System for preheating tire mold Download PDF

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Publication number
KR101812255B1
KR101812255B1 KR1020150161715A KR20150161715A KR101812255B1 KR 101812255 B1 KR101812255 B1 KR 101812255B1 KR 1020150161715 A KR1020150161715 A KR 1020150161715A KR 20150161715 A KR20150161715 A KR 20150161715A KR 101812255 B1 KR101812255 B1 KR 101812255B1
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KR
South Korea
Prior art keywords
coil
tire mold
preheating
coil part
module
Prior art date
Application number
KR1020150161715A
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Korean (ko)
Other versions
KR20170058487A (en
Inventor
이민주
정경훈
김인영
Original Assignee
넥센타이어 주식회사
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Priority to KR1020150161715A priority Critical patent/KR101812255B1/en
Publication of KR20170058487A publication Critical patent/KR20170058487A/en
Application granted granted Critical
Publication of KR101812255B1 publication Critical patent/KR101812255B1/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
    • B29D30/0005—Pretreatment of tyres or parts thereof, e.g. preheating, irradiation, precuring
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/02—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/02—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means
    • B29C33/06—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means using radiation, e.g. electro-magnetic waves, induction heating

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

The present invention relates to a tire mold preheating system, and more particularly, to a tire mold preheating system comprising: a body portion forming a preheating space in which a tire mold introduced from the outside is preheated; A transfer unit for supplying the tire mold to the preheating space or for releasing the tire mold from the preheating space; A first coil part provided inside the preheating space and movable in a height direction of the body part and preheating the tire mold through induction heating; A lowering module for lowering the first coil part so that the first coil part surrounds the tire mold when the tire mold flows into the preheating space; A preheating module for controlling a preheating amount or a preheating time of the first coil part while the first coil part surrounds the tire mold; And a control module including a lift module for raising the first coil part when the preheating of the tire mold is completed.

Description

SYSTEM FOR PREHEATING TIRE MOLD

The present invention relates to a tire mold preheating system, and more particularly, to a tire mold preheating system for preheating a mold used for tire vulcanization.

In general, in order to manufacture a tire, a rubber compounded with various rubbers and chemicals is mixed with a semi-finished product through a compression process and a rolling process, and then various semi-finished products are assembled in a molding process to form a green tire in a predetermined shape, The tire is finished with a curing process that chemically bonds the compounded rubber with heat and pressure.

In this vulcanization process, the green tire is inflated through the bladder loaded inside, and the outer surface of the green tire is adhered to the tire by receiving heat and pressure through the mold.

Accordingly, in the tire vulcanization process, the tire mold is required to be preheated, and conventionally, the tire mold is preheated in such a manner that water vapor is used as a heat source, but the rubber mold is brought into contact with the lower surface of the mold through the metal plate.

On the other hand, according to this method, there is a disadvantage that the temperature inside the mold can not be uniformly preheated, and there is a problem that it is difficult to preheat the mold at a high temperature due to a large heat loss.

Further, there arises a problem that further preheating is required in the curing process after the preheating.

Registration Utility Model No. 20-0141882

It is therefore an object of the present invention to provide a tire mold preheating system capable of preheating a desired portion of a tire mold to a desired temperature.

According to an aspect of the present invention, there is provided a tire manufacturing method comprising: a body portion forming a preheating space in which a tire mold introduced from the outside is preheated; A transfer unit for supplying the tire mold to the preheating space or for releasing the tire mold from the preheating space; A first coil part provided inside the preheating space and movable in a height direction of the body part and preheating the tire mold through induction heating; A lowering module for lowering the first coil part so that the first coil part surrounds the tire mold when the tire mold flows into the preheating space; A preheating module for controlling a preheating amount or a preheating time of the first coil part while the first coil part surrounds the tire mold; And a control module including a lift module for raising the first coil part when the preheating of the tire mold is completed.

The apparatus may further include a second coil part provided on the preheating space to preheat the upper portion of the tire mold.

The second coil part is provided movably along the height direction of the preheating space, and the lowering module includes the second coil part such that when the tire mold flows into the preheating space, the second coil part is adjacent to the tire mold, It is preferable to lower it.

The apparatus may further include a third coil part provided between the transfer part and the tire mold to preheat the lower part of the tire mold.

The third coil part may further include a refractory material enclosing an outer surface of the transfer part, wherein the transfer part protrudes from the outer surface of the transfer part and protrudes through the refractory material and supports the load of the tire mold desirable.

In addition, an opening / closing part for opening or closing the preheating space may be formed on one side of the body part, and the transferring part may be introduced into or removed from the preheating space through the opening / closing part.

Preferably, the opening and closing part includes a first opening and closing part and a second opening and closing part formed on one surface facing the first opening and closing part, and the conveying part moves to the first opening and closing part after passing through the second opening and closing part.

It is preferable that the lowering module adjusts the lowering position of the first coil part so that the first coil part faces the central part of the tire mold.

Preferably, the control unit sequentially operates the descending module, the preheating module, and the ascending module.

In addition, it is preferable that the first coil portion has a diameter of 1320 mm or more.

According to the present invention, the tire mold can be uniformly preheated to a high temperature.

Further, the preheating process of the tire mold can be automated.

Further, the time required for preheating the tire mold can be shortened, and the productivity of the tire can be improved.

1 is a perspective view schematically showing a tire mold preheating system according to a first embodiment of the present invention,
Fig. 2 is a front sectional view schematically showing the tire mold preheating system according to Fig. 1,
FIG. 3 is a front sectional view schematically showing a coupling relationship between the body part and the first and second coil parts in the tire mold preheating system according to FIG. 1,
Fig. 4 is a front view schematically showing a first coil part in the tire mold preheating system according to Fig. 1,
Fig. 5 is a bottom view schematically showing a second coil part in the tire mold preheating system according to Fig. 1,
FIG. 6 is a perspective view schematically showing a state where the first and second coil parts are coupled in the tire mold preheating system according to FIG. 1,
FIG. 7 is a perspective view schematically showing a state of a transfer part and a third coil part in the tire mold preheating system according to FIG. 1,
8 is a conceptual diagram schematically showing a tire mold preheating system according to a second embodiment of the present invention.

Prior to the description, components having the same configuration are denoted by the same reference numerals as those in the first embodiment. In other embodiments, configurations different from those of the first embodiment will be described do.

Hereinafter, a tire mold preheating system according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. Like reference symbols in the drawings denote like elements.

FIG. 1 is a perspective view schematically showing a tire mold preheating system according to a first embodiment of the present invention, and FIG. 2 is a front sectional view schematically showing a tire mold preheating system according to FIG.

Referring to FIGS. 1 and 2, the tire mold preheating system 100 according to the first embodiment of the present invention can select and preheat a portion desired by a user in a tire mold, and can improve the preheating speed and preheating temperature A body part 110, a transfer part 120, a coil part 130, and a control part 170. As shown in FIG.

Referring to FIG. 1, the body 110 serves as a main frame of the present invention, and forms a preheating space 111 in which a tire mold M can be preheated.

The opening and closing part 112 may be formed on one side of the body part 110 to allow the tire mold M to flow into and out of the preheating space 111.

According to the first embodiment of the present invention, the opening and closing part 112 is formed on one side of the body part 110 and the tire mold M is inserted into the preheating space 111 through the one opening and closing part 112, And can be separated from the preheating space 111.

Referring to FIG. 7, the transfer unit 120 provides a space in which the tire mold M is mounted, and is configured to move inside and outside the preheating space 111 in a state where the tire mold M is stationary.

According to the first embodiment of the present invention, a protrusion 121 protruding upward is formed on the upper surface of the transfer unit 120, and a load of the tire mold M is supported by the protrusion 121.

Here, the protrusions 121 may be provided so that six protrusions 121 are spaced apart from each other on a predetermined imaginary circle, but it is not limited thereto, and it is of course possible to adjust the number of protrusions 121 as necessary.

The protruding portion 121 is made of a material having low electric conductivity and low thermal conductivity so as not to be heated at the time of preheating the tire mold M by the coil portion 130 to be described later.

According to the first embodiment of the present invention, it is possible to provide a rail R for guiding the conveyance direction of the conveyance unit 120. The lane R may include a preheating space 111 As shown in Fig.

FIG. 3 is a front cross-sectional view schematically showing the relationship between the body portion and the first and second coil portions in the tire mold preheating system according to FIG. 1, and FIG. 4 is a cross- Fig. 5 is a bottom view schematically showing a second coil part in the tire mold preheating system according to Fig. 1, and Fig. 6 is a front view schematically showing the first and second And FIG. 7 is a perspective view schematically showing a state of a transfer part and a third coil part in the tire mold preheating system according to FIG. 1. In FIG.

3 to 7, the coil part 130 preheats the tire mold M through induction heating. The first coil part 140, the second coil part 150, the third coil part 150, (160).

The first coil part 140 is provided inside the preheating space 111 so as to be movable in the height direction of the body part 110 and preheats the side of the tire mold M through induction heating, 141, a support 142, and a first height adjustment member 143.

The first coil 141 has a larger diameter than the tire mold M so that the tire mold M can be disposed in the inner space.

Here, the first coil 141 may be provided such that a plurality of circular rings are spaced apart from each other along the height direction of the body 110, and one coil is provided to extend along the height direction of the body 110 .

The support portion 142 is a member connected to the first coil 141 to support the first coil 141.

In other words, the first coil 141 is moved along the height direction of the body 110 according to need, and deformation may be caused by the load as the movement process is repeated. The life of the first coil part 140 can be improved by supporting the first coil 141 through the support part 142 so as to prevent such a problem.

Meanwhile, according to the first embodiment of the present invention, a wire (not shown) may be provided inside the support portion 142 to connect with the first coil 141 to apply power.

The first height adjustment member 143 is connected to the inner wall surface of the body 110 and the support portion 142 to guide the support portion 142 to slide on the inner wall surface of the body 110.

The inner wall surface of the body 110 may be the side of the preheating space 111 or may be the top of the preheating space 111, It is sufficient that the position of the light guide plate 141 can be changed.

For example, if the first height adjusting member 143 is provided above the preheating space 111, the first height adjusting member 143 may be extended along the height direction of the body 110, The heat generating member may be provided as a member slidable between the side of the preheating space 111 and the support portion 142 as long as it is provided on the side of the space 111. [

The first coil part 140 is disposed on the first height adjusting member 143 in a state where the tire mold M is introduced into the preheating space 111. [ So that the tire mold M is disposed in the inner space of the first coil 141 when the tire is lowered to the tire mold M side.

Since the diameter of the tire mold M used in the first embodiment of the present invention is 1190 to 1084 mm, the diameter of the first coil 141 is preferably at least 1320 mm .

The second coil part 150 is provided at an upper part of the preheating space 111 to preheat the upper portion of the tire mold M and includes a second coil 151 and a case part 152.

The second coil 151 is provided so as to extend along a spiral direction on one plane.

According to the first embodiment of the present invention, the second coil 151 receives power through a wire (not shown) provided inside the support portion 142, but is not limited thereto.

The case 152 is connected to the second coil 151 to support the second coil 151.

In the first embodiment of the present invention, the case portion 152 is connected to the upper end of the support portion 142.

That is, when the second coil part 150 is connected to the upper end of the support part 142 so that the first coil part 140 moves along the height direction of the body part 110, And moves along the height direction of the body part 110 as the part 140 is.

In the first embodiment of the present invention, the second coil part 150 is connected to the support part 142 and has the same movement as the first coil part 140. However, the present invention is not limited to this, The body 150 can be moved along the height direction of the body 110 by having a separate height adjusting member (not shown) without being connected to the supporting portion 140.

The third coil part 160 is provided on the transfer part 120 to preheat the lower part of the tire mold M and includes a third coil 161, a refractory material 162 and a guide member 163.

The third coil 161 has substantially the same shape as the second coil 151 and is provided between the tire mold M and the transfer unit 120.

The refractory 162 prevents heat from being transferred to the third coil 161 from the preheated tire mold M and is provided to surround the third coil 161.

More specifically, when high frequency is generated by the first coil 141, the second coil 151 and the third coil 161, the tire mold M is preheated to a high temperature state by induction heating. Since the first coil 141 and the second coil 151 are opened in the circumference thereof, the third coil 161 and the second coil 151 are not greatly affected by the hot tire mold M, ) And is disposed in a substantially closed space, and is affected by the high-temperature tire mold (M), and there is a possibility of deformation and breakage due to high temperature.

The third coil 161 can be protected from the high temperature tire mold M by winding the third coil 161 through the refractory 162. [

The guide member 163 is adapted to seat the position of the tire mold M at a central portion.

According to the first embodiment of the present invention, the guide member 163 allows the center portion of the tire mold M to be disposed on the center portion of the imaginary circle in which the projecting portion 121 is formed, and more precisely, Direction and the radial direction of the tire mold M to be able to restrain the side surface of the tire mold M.

Here, the range of movement of the guide member 163 may be provided in a range including the minimum diameter and the maximum diameter of the tire mold M to be preheated in one embodiment of the present invention.

The control unit 170 controls the operation of the coil unit 130 and includes a descending module 171, a preheating module 172 and an ascending module 173.

The lowering module 171 moves down the first coil part 140 so that the first coil part 140 surrounds the side surface of the tire mold M when the tire mold M flows into the preheating space 111 .

That is, before the tire mold M flows into the preheating space 111, the first coil part 140 is disposed above the preheating space 111 so as not to collide with the tire mold M, and the tire mold M Is placed inside the preheating space 111, the tire mold M is lowered through the lowering module 171 to cover the tire mold M.

Here, in the first embodiment of the present invention, since the second coil part 150 is also connected to the first coil part 140, it can be seen that it is lowered by the lowering module 171.

Even if the second coil part 150 is not connected to the first coil part 140 as described above, if the tire mold M flows into the preheating space 111, The second coil part 150 can be lowered so that the part 150 is close to the upper surface of the tire mold M.

The lowering module 171 can set the lowering position so that the first coil part 140 is located at the center of the side surface of the tire module M when the first coil part 140 is lowered.

Since the temperature of the tire mold M is uniformly preheated through the tire mold preheating system, the fact that the first coil part 140 is located at the center of the side surface of the tire module M is a uniform It is advantageous for preheating.

Here, the upper and lower portions of the tire mold M are further preheated by the second coil portion 150 and the third coil portion 160, so that uniform preheating of the tire mold M is possible.

The preheating module 172 is configured such that the coil part 130, more precisely the first coil part 140, the second coil part 150, and the second coil part 150 are arranged in a state in which the first coil part 140 is lowered by the lowering module 171, And the preheating time of the third coil part 160 are controlled.

That is, the preheating module 172 controls the amount of current supplied to each of the first coil part 140, the second coil part 150 and the third coil part 160, the flow direction of the current, So that the mold M can be preheated to a temperature state required by the user.

When the preheating of the tire mold M is completed, the lifting module 173 raises the first coil part 140 before releasing the tire mold M from the preheating space 111, To prevent collision of the vehicle.

Since the first coil part 140 surrounds the side surface of the tire mold M during the preheating process as described above, the transfer path of the tire mold M and the preheating position of the first coil part 140 Are duplicated.

Therefore, when releasing the tire mold M from the preheating space 111, it is necessary to move the position of the first coil part 140 to the initial state, and this operation is controlled through the ascending module 173.

A temperature measuring unit (not shown) for measuring the temperature of the tire mold M may be provided in the preheating space 111. When the temperature of the tire mold M is preheated to a predetermined temperature, And the rising module 173 to stop the heating by the coil part 130 and to control the first coil part 140 to rise.

Hereinafter, the operation of the first embodiment of the tire mold preheating system described above will be described.

First, a tire mold M is mounted on an upper portion of the transfer unit 120 disposed outside the preheating space 111. The tire mold M is mounted on the transfer unit 120 using the guide member 163 and then the transfer unit 120 is operated to provide the tire mold M into the preheating space 111. [

When the tire mold M is provided inside the preheating space 111, the opening and closing part 112 of the body part 110 closes the preheating space 111 and blocks heat transfer to the outside.

When the transfer unit 120 reaches a predetermined position in the preheating space 111, the first coil unit 140 and the second coil unit 150 are lowered by the lowering module 171. The lowering module 171 moves down the first coil part 140 and the second coil part 150 until the first coil part 140 reaches the center of the side surface of the tire mold M. [

Of course, the position of the first coil part 140 may be biasedly positioned on the upper side or the lower side of the side surface of the tire mold M in order to intensively preheat the temperature of a part of the tire mold M, Do.

When the lowering of the first coil part 140 and the second coil part 150 by the lowering module 171 is completed, the preheating module 172 operates the coil part 130 to preheat the tire mold M .

The control by the preheating module 172 can be set differently because the standard of the tire mold M and the required temperature are different according to necessity.

When the preheating of the tire mold M is completed, the elevating module 173 raises the first coil part 140 to transfer the tire mold M.

It is sufficient if the first coil part 140 is lifted to the extent that the first coil part 140 does not overlap with the transfer path of the tire mold M by the ascending module 173, State.

When the upward movement of the first coil part 140 is completed by the lifting module 173, the opening and closing part 112 of the body part 110 is opened and the tire mold M preheated by the transfer part 120 And is transported outward.

The preheated tire mold M is collected and supplied to the tire vulcanizing process.

On the other hand, when the pre-heated tire mold M is collected, the tire mold M that has not been preheated is seated on the transfer unit 120, and then the above process is repeated.

By performing the above process, the preheating process of the tire mold M can be automated, and the tire mold M can be uniformly preheated in a short period of time at a high temperature.

Next, a tire mold preheating system according to a second embodiment of the present invention will be described.

8 is a conceptual diagram schematically showing a tire mold preheating system according to a second embodiment of the present invention.

Referring to FIG. 8, the tire mold preheating system 100 according to the second embodiment of the present invention can select and preheat a portion desired by a user in a tire mold, and can improve the preheating speed and preheating temperature And includes a body part 210, a transfer part 120, a coil part 130, and a control part 170.

The tire mold preheating system 200 according to the second embodiment of the present invention further automates the preheating process of the tire mold M and is formed by a closed curve in which the rails R are continuously connected, The first opening / closing part 212a and the second opening / closing part 212b, which are the outlets, can continuously perform the preheating process of the tire mold M.

The body part 210 serves as a main frame of the present invention and forms a preheating space 211 in which the tire mold M can be preheated. The body part 210, substantially described in the first embodiment, The present invention is different from the first embodiment in that the opening and closing part 212 is divided into a first opening and closing part 212a as an entrance and a second opening and closing part 212b as an exit.

The conveyance unit 120, the coil unit 130, and the control unit 170 are substantially the same as those described in the first embodiment, and a duplicate description will be omitted.

According to the second embodiment of the present invention, the rail R passes through the first opening and closing part 212a and the second opening and closing part 212b, and is connected to the conveying part 120 so as to be circulated, Respectively.

In addition, the rail R may be provided to pass through a separate system for performing a tire vulcanization process so as to provide the preheated tire mold M to a system for performing a tire vulcanization process.

Furthermore, the rail R can pass through the space for providing the tire mold M so as to be provided with the tire mold M requiring preheating.

Accordingly, in the second embodiment of the present invention, the provision of the tire mold M, the preheating of the tire mold M, and the provision of the preheated tire mold M to the vulcanizing process are sequentially performed, Can be continuously performed by automating the preheating process.

It is to be understood that the scope of the present invention is not limited to the above embodiments and that various changes and modifications may be made without departing from the spirit and scope of the present invention, I will see.

100: Tire mold preheating system
110: body part 120:
130: coil section 140: first coil section
150: second coil part 160: third coil part
170:
200: Tire mold preheating system
210:

Claims (10)

A body portion forming a preheating space in which a tire mold introduced from the outside is preheated;
A transfer unit for supplying the tire mold to the preheating space or for releasing the tire mold from the preheating space;
A first coil part provided inside the preheating space and movable in a height direction of the body part, the first coil part including a first coil, a supporting part and a first height adjusting member, preheating the tire mold through induction heating;
A lowering module for lowering the first coil part so that the first coil part surrounds the tire mold when the tire mold flows into the preheating space, and a lower coil part for lowering the preheating amount of the first coil part, A preheating module for controlling the preheating time, and a rising module for raising the first coil part when preheating of the tire mold is completed;
A second coil part provided on the upper part of the preheating space to preheat the upper part of the tire mold and including a second coil and a case part; And
And a third coil part having the same shape as the second coil and provided between the transfer part and the tire mold and configured to preheat the lower part of the tire mold, the third coil part being composed of a third coil, a refractory material and a guide member,
Wherein the third coil portion is provided with a refractory material surrounding the outer surface,
The transfer part is provided with a protrusion protruding from the outer surface of the transfer part, passing through the refractory material, supporting a load of the tire mold,
Wherein the protruding portion is made of a material having a low electrical conductivity and a low thermal conductivity so as not to be heated when the tire mold is preheated,
Wherein the second coil is configured to extend along a spiral direction on one plane, the case portion is connected to the second coil to support the second coil,
Wherein the first coil and the second coil are in the form of openings and the third coil is cut off by the transferring portion to wrap the third coil through the refractory material, ≪ / RTI >
Wherein the first coil portion has a diameter of 1320 mm or more. delete delete delete delete The method according to claim 1,
The body part may have an opening / closing part for opening or closing the preheating space,
Wherein the transferring part is introduced into or withdrawn from the preheating space through the opening and closing part. The method according to claim 6,
The opening and closing part includes a first opening and closing part and a second opening and closing part formed on one surface facing the first opening and closing part,
And the transfer unit moves to the first opening / closing unit after passing through the second opening / closing unit. The method according to any one of claims 1, 6, and 7,
Wherein the lowering module adjusts a lowering position of the first coil part so that the first coil part faces the center part of the tire mold. 9. The method of claim 8,
Wherein the control unit sequentially operates the descending module, the preheating module, and the ascending module. delete
KR1020150161715A 2015-11-18 2015-11-18 System for preheating tire mold KR101812255B1 (en)

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KR1020150161715A KR101812255B1 (en) 2015-11-18 2015-11-18 System for preheating tire mold

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KR101812255B1 true KR101812255B1 (en) 2017-12-28

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6071730B2 (en) * 2012-05-31 2017-02-01 株式会社吉野工業所 Flat bottle

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6071730B2 (en) * 2012-05-31 2017-02-01 株式会社吉野工業所 Flat bottle

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