KR20150062371A - Curing bladder for tire manufacture - Google Patents

Curing bladder for tire manufacture Download PDF

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Publication number
KR20150062371A
KR20150062371A KR1020130146955A KR20130146955A KR20150062371A KR 20150062371 A KR20150062371 A KR 20150062371A KR 1020130146955 A KR1020130146955 A KR 1020130146955A KR 20130146955 A KR20130146955 A KR 20130146955A KR 20150062371 A KR20150062371 A KR 20150062371A
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KR
South Korea
Prior art keywords
green tire
tire
bladder
curing
pressure
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KR1020130146955A
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Korean (ko)
Inventor
박수훤
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한국타이어 주식회사
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Priority to KR1020130146955A priority Critical patent/KR20150062371A/en
Publication of KR20150062371A publication Critical patent/KR20150062371A/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)
    • B29D30/0601—Vulcanising tyres; Vulcanising presses for tyres
    • B29D30/0654—Flexible cores therefor, e.g. bladders, bags, membranes, diaphragms
    • 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
    • B29D30/0061—Accessories, details or auxiliary operations not otherwise provided for
    • 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)
    • B29D30/0601—Vulcanising tyres; Vulcanising presses for tyres
    • B29D30/0662—Accessories, details or auxiliary operations
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
    • 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
    • B29D30/0061—Accessories, details or auxiliary operations not otherwise provided for
    • B29D2030/0066—Tyre quality control during manufacturing
    • 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)
    • B29D30/0601—Vulcanising tyres; Vulcanising presses for tyres
    • B29D30/0654—Flexible cores therefor, e.g. bladders, bags, membranes, diaphragms
    • B29D2030/0659—Details or accessories for the flexible cores not otherwise provided for

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)

Abstract

The present invention relates to a curing bladder to be in contact with the inside of a green tire added into a curing mold during a process of adding and curing a green tire in a curing mold to produce a tire, and more specifically, to a curing bladder for producing a tire, having ameliorated pneumaticity inappropriateness by an air pocket on an adhesion surface with a cured green tire. To this end, the curing bladder molds a green tire when curing the green tire by being in contact with the inner surface of the green tire. Air pressure sensors (2) are attached to a surface (1a) of the curing bladder (1) to measure pressure in several places. The air pressure sensor (2) is attached to the inside of each partitioned space partitioned by dividing members (3), and is connected to an external control unit (6) as the air pressure sensors are connected with one another through wires (5).

Description

타이어 제조용 가류 블래더{Curing bladder for tire manufacture}Curing bladder for tire manufacture

본 발명은 타이어 제조시 그린타이어를 가류금형에 넣어 가류시키는 가류공정에서 가류금형 내에 투입된 그린타이어의 내부와 접촉하는 가류 블래더에 관한 것으로, 더욱 상세하게는 가류되는 그린타이어와의 부착면에서 공기포켓(Air pocket)에 의한 공기입 부적합을 개선한 타이어 제조용 가류 블래더에 관한 것이다.The present invention relates to a vulcanized bladder which is brought into contact with the inside of a green tire put into a vulcanizing mold in a vulcanizing process in which a green tire is vulcanized by vulcanizing a green tire during tire manufacturing. More specifically, To a vulcanized bladder for tire manufacturing which improves the incompatibility of air entry by an air pocket.

타이어 제조시 가류공정은 성형공정에서 완성된 그린타이어를 타이어의 가류금형에 넣어 내외측에서 열과 압력증기를 가해서 일정시간 동안 경과시키어 타이어의 안정된 고유 성질을 얻음과 더불어, 금형에 의해 독특한 트레드(Tread) 디자인을 얻도록 되어 있다.In the vulcanization process of tire manufacturing, the green tire completed in the molding process is put into the vulcanization mold of the tire, heat and pressure steam is applied from the inside and the outside, and it is elapsed for a predetermined time to obtain stable property of the tire, ) Design.

이러한 타이어의 가류공정에서 이용되는 블래더는 그린타이어 가류시 상기 그린타이어의 내부에 접해져서 가해지는 내부 압력에 의해 부풀어져 타이어를 성형시키는 역할을 갖는다.The bladder used in the vulcanization process of the tire has a role of forming the tire by being inflated by the internal pressure applied to the inside of the green tire when the green tire vulcanization is applied.

일반적으로 타이어의 내부 구조물은 두께를 가지고 있어 단차를 발생시킬 수밖에 없으며, 이러한 단차에는 공기가 들어갈 수 있어 이의 배출이 여러 가지 방법으로 진행되어 왔다.In general, the inner structure of a tire has a thickness, and therefore it is inevitable to generate a step, and air can be introduced into such a step, and the discharge of the tire has been carried out in various ways.

기존의 공기를 배출해 내는 방법으로 진행하는 경우 일반적인 경우 크게 문제되지 않지만, 최근 로우시리즈 타이어에서 벨트부 보강이 추가되면서 공기포켓이 많아지는 경우가 발생되고 있다.In the case of a conventional air discharge method, it is not a big problem in general, but in recent years, an increase in the number of air pockets has been caused by the addition of the belt portion reinforcement in the low series tires.

기존의 공기 배출방법으로는 해결에 한계를 보이는 경우도 있어 이를 개선하고자 가류 블래더 측면에서 개선을 이루고자 하는 고안들이 나타나고 있다. 기존의 가류 블래더의 두께를 달리하여(센터부를 두껍게 하고 숄더부를 상대적으로 얇게 조정) 공기포켓이 많은 부분에 블래더의 팽창을 크게 하는 방법이 있었고, 블래더의 센터부에 막을 세워 센터부 팽창을 억제하고 숄더부의 팽창을 크게 하는 방법이 있었다.There are some limitations in the conventional air discharge method. Therefore, some attempts have been made to improve the bladder in order to improve it. There was a method of increasing the swelling of the bladder by changing the thickness of the existing vulcanized bladder (thickening the center portion and adjusting the shoulder portion relatively thin) And the expansion of the shoulder portion is increased.

상기의 종래방법은 실제 공기포켓의 위치와 크기에 관계없이 일정한 압력이 숄더부에 몰리게 되어 문제가 되지 않는 타이어의 경우 숄더부의 고무의 흐름이 많아져 최초 설계시 의도한 단면이 나오지 못하는 문제가 발생될 수 있다.In the conventional method, a constant pressure is applied to the shoulder irrespective of the position and size of the actual air pocket. In the case of a tire which does not cause a problem, the rubber flow of the shoulder portion increases, .

이에 본 발명은 상기와 같은 종래 문제점을 해결하기 위해 발명된 것으로, 그린타이어의 가류시 상기 그린타이어의 내부에 접촉되는 블래더의 부착면에서 공기포켓에 의한 공기입 부적합을 개선하여 타이어의 가류 생산성 향상과 부적합 공기압에 의한 타이어의 가류불량을 저감할 수 있는 타이어 제조용 가류 블래더를 제공함에 그 목적이 있다.SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to improve air entrainment due to air pockets on a mounting surface of a bladder contacting the interior of a green tire, And to provide a vulcanized bladder for tire manufacturing which can reduce the vulcanization failure of the tire due to the improper air pressure.

상기와 같은 목적을 달성하기 위한 본 발명은 그린타이어 가류시 금형 내에 넣어진 그린타이어의 내면에 접하여 상기 그린타이어를 부풀어 오르게 성형시키는 가류 블래더에 있어서, 상기 가류 블래더의 표면에는 압력을 여러 군데에서 측정하기 위한 공기압 압력센서들이 부착되되, 상기 공기압 압력센서는 구획부재에 의해서 다수개의 구획된 구획공간 내에 하나씩 부착되어 있으며, 상기 공기압 압력센서가 부착된 각각의 구획공간에는 추가압력 공급밸브에 연결된 압력 공급관이 각각 연결되어 있다.According to an aspect of the present invention, there is provided a vulcanized bladder for inflating a green tire in contact with an inner surface of a green tire placed in a mold during vulcanization of a green tire, Wherein the pneumatic pressure sensor is attached to each of the plurality of compartment spaces by the partition member, and each of the compartment spaces to which the pneumatic pressure sensor is attached is connected to the additional pressure supply valve And a pressure supply pipe are respectively connected.

이러한 본 발명에 따른 타이어 제조용 가류 블래더는 그린타이어의 가류시 블래더로 공급되는 압력의 부적합이 발생할 때 공기압 압력센서로 측정하여 공기포켓이 발생된 블래더의 구획공간 내로 추가로 압력을 공급하여 가류 블래더의 공기압 부적합에 의해 타이어의 가류 불량을 저감하여 타이어의 가류 생산성 향상에 도움을 주도록 되어 있다.The vulcanized bladder for manufacturing a tire according to the present invention measures a pressure applied to the bladder when the pressure applied to the bladder is inadequate when the green tire is vulcanized and further pressure is supplied into the compartment space of the bladder in which the air pocket is generated The vulcanization blur of the vulcanized bladder is poor in the vulcanization of the tire due to the non-conformity of the air pressure, thereby helping to improve the vulcanization productivity of the tire.

도 1은 본 발명에 따른 가류 블래더(Bladder)의 팽창상태를 보여주는 개략적인 단면도이다.1 is a schematic sectional view showing an expansion state of a vulcanized bladder according to the present invention.

이하, 본 발명의 바람직한 실시예를 첨부도면에 의거 상세히 설명한다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명에 따른 타이어 제조용 가류 블래더가 부풀어진 상태를 보여주는 개략적인 단면도이다.1 is a schematic cross-sectional view showing a state in which a vulcanized bladder for manufacturing a tire according to the present invention is inflated.

도 1에 도시된 가류 블래더(1)는 도면에 미도시된 그린타이어 가류시 가류금형 내에 넣어진 그린타이어의 내부면에 접촉하여 열과 압력매체를 이용하여 상기 그린타이어를 부풀어 오르게 성형하는 역할을 수행한다.The vulcanized bladder 1 shown in FIG. 1 has a role of contacting the inner surface of a green tire placed in a vulcanizing mold when vulcanizing a green tire not shown in the figure, and molding the green tire by using heat and pressure medium .

본 발명은 그린타이어의 내면에 접촉하여 그린타이어 가류시 상기 그린타이어를 성형하는 가류 블래더에 있어서, 상기 가류 블래더(1)의 표면(1a)에는 압력을 여러 군데에서 측정하기 위해 공기압 압력센서(2)들이 부착되되, 상기 공기압 압력센서(2)는 구획부재(3)에 의해서 다수 개로 구획된 구획공간(4) 내에 하나씩 부착되어 있으면서 전선(5)으로 서로 연결되어 외부의 제어부(6)에 연결되어 있다.The present invention relates to a vulcanized bladder for molding a green tire in contact with an inner surface of a green tire and vulcanizing the green tire, characterized in that, on the surface (1a) of the vulcanized bladder (1) Wherein the pneumatic pressure sensor 2 is attached to each of the compartment spaces 4 partitioned by the partition member 3 into a plurality of compartment spaces 4 and connected to each other by an electric wire 5 so as to be connected to an external control unit 6, Respectively.

그리고 상기 공기압 압력센서(2)가 부착된 각각의 구획공간(4) 내에는 추가압력 공급밸브(7)에 연통된 압력 공급관(8)이 각각 연결되어 있으며, 상기 압력 공급관(8)에는 방향절환 밸브(9)들이 장착되어 각각의 구획공간(4) 내로 공급하는 압력을 제어하도록 되어 있다.A pressure supply pipe 8 communicating with the additional pressure supply valve 7 is connected to each of the compartment spaces 4 to which the pneumatic pressure sensor 2 is attached. The valves 9 are mounted so as to control the pressure to be supplied into the respective compartment spaces 4. [

여기서 상기 추가압력 공급밸브(7)와 방향절환 밸브(9)들의 작동은 공지와 같이 제어부(6)의 신호에 의해 개방되거나 폐쇄되어 압력을 공급할 수 있는 일반적인 기술을 사용하도록 되어 있다.Here, the operation of the additional pressure supply valve 7 and the directional switching valve 9 is adapted to use a general technique that can be opened or closed by a signal of the control unit 6 to supply pressure as is well known.

이러한 본 발명에 따른 가류 블래더(1)가 가류시 그린타이어의 내부에서 세이핑(Shaping)되어 그린타이어의 내부와 접촉되어 일정 압력에 의해 그린타이어 내부에 완전히 밀착하게 되면, 공기압 압력센서(2)들이 가류 블래더(1)의 표면(1a)압력을 측정하게 된다. 그러면 가류 블래더(1)의 표면(1a)압력에서 측정된 압력이 가류기의 제어부(6)에 전달되는데, 이때 상기 가류 블래더(1)에서 공기포켓이 발생된 부분의 표면압력이 주변보다 상대적으로 낮게 측정된다. 이에 따라 상대적으로 낮게 측정된 가류 블래더(1)의 구획공간(4)으로 압력을 추가압력 공급밸브(7)와 방향절환 밸브(9)들을 작동시키어 추가로 투입함에 따라 상기 가류 블래더(1)에서 공기포켓이 발생된 구획공간(4)을 그린타이어 쪽으로 더 밀어서 공기포켓에 압력을 가하여 공기가 가류기의 금형밖으로 밀려 나가도록 되어 있다.When the vulcanized bladder 1 according to the present invention is shaped inside the green tire at the time of vulcanization and brought into contact with the inside of the green tire and completely brought into contact with the inside of the green tire by a certain pressure, ) Measure the pressure of the surface 1a of the vulcanized bladder 1. Then, the pressure measured at the pressure of the surface 1a of the vulcanized bladder 1 is transferred to the control unit 6 of the vulcanizer. At this time, the surface pressure of the portion where the air pocket is generated in the vulcanized bladder 1 It is measured relatively low. As a result, as the additional pressure supply valve 7 and the directional control valves 9 are operated to further introduce the pressure into the compartment space 4 of the vulcanized bladder 1 measured relatively low, the vulcanized bladder 1 ), The compartment space (4) where the air pocket is generated is further pushed toward the green tire so that air is pushed out of the mold of the vulcanizer by applying pressure to the air pocket.

상기와 같은 본 발명은 그린타이어 가류시 그린타이어의 내면에 접촉하는 가류 블래더와 그린타이어 사이에 형성될 수 있는 공기포켓과 같은 공기입 부적합시 이를 추가 압력을 가하여 공기입 부적합을 제거하도록 되어 있기에 그린타이어 가류불량을 저감하여 타이어의 가류 생산성에 도움을 주도록 되어 있다.The present invention as described above is adapted to remove air incompatibility by applying an additional pressure to an air pocket such as an air pocket that can be formed between a vulcanized bladder contacting the inner surface of a green tire and a green tire when the tire is vulcanized And it is intended to help the vulcanization productivity of the tire by reducing the vulcanization failure of the green tire.

1 : 가류 블래더(Bladder), 2 : 공기압 압력센서,
3 : 구획부재, 4 : 구획공간,
5 : 전선, 6 : 제어부,
7 : 추가압력 공급밸브, 8 : 압력 공급관,
9 : 방향절환 밸브.1: a vulcanizer bladder, 2: an air pressure sensor,
3: partition member, 4: compartment space,
5: wire, 6: control unit,
7: additional pressure supply valve, 8: pressure supply pipe,
9: Directional switching valve.

Claims (3)

그린타이어의 내면에 접촉하여 그린타이어 가류시 상기 그린타이어를 성형하는 가류 블래더에 있어서,
상기 가류 블래더(1)의 표면(1a)에는 압력을 여러 군데에서 측정하기 위해 공기압 압력센서(2)들이 부착되되, 상기 공기압 압력센서(2)는 구획부재(3)에 의해서 다수 개로 구획된 구획공간(4) 내에 하나씩 부착되어 있으면서 전선(5)으로 서로 연결되어 외부의 제어부(6)에 연결되어 이루어진 것을 특징으로 하는 타이어 제조용 가류 블래더.1. A vulcanized bladder for molding the green tire when it comes into contact with the inner surface of the green tire and vulcanizes the green tire,
The pneumatic pressure sensor 2 is attached to the surface 1a of the vulcanized bladder 1 in order to measure the pressure at several points. The pneumatic pressure sensor 2 is divided into a plurality of sections by the partition member 3 (1), and are connected to each other by electric wires (5) and connected to an external control unit (6). 제 1항에 있어서,
상기 공기압 압력센서(2)가 부착된 각각의 구획공간(4) 내에는 추가압력 공급밸브(7)에 연통된 압력 공급관(8)이 각각 연결된 것을 특징으로 하는 타이어 제조용 블래더.The method according to claim 1,
Wherein a pressure supply pipe (8) communicating with an additional pressure supply valve (7) is connected to each of the compartment spaces (4) to which the pneumatic pressure sensor (2) is attached. 제 2항에 있어서,
상기 압력 공급관(8)에는 방향절환 밸브(9)들이 장착되어 각각의 구획공간(4) 내로 공급하는 압력을 제어하도록 된 것을 특징으로 하는 타이어 제조용 가류 블래더.
3. The method of claim 2,
Wherein a directional control valve (9) is mounted on the pressure supply pipe (8) to control a pressure supplied to each of the compartment spaces (4).
KR1020130146955A 2013-11-29 2013-11-29 Curing bladder for tire manufacture KR20150062371A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3890972A4 (en) * 2018-12-07 2022-09-07 FineLine Technologies Systems and methods for maintaining automated quality control during tire manufacture using specialized rfid tags
KR20230060656A (en) * 2021-10-28 2023-05-08 금호타이어 주식회사 Tire vulcanization bladder

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3890972A4 (en) * 2018-12-07 2022-09-07 FineLine Technologies Systems and methods for maintaining automated quality control during tire manufacture using specialized rfid tags
US11453186B2 (en) 2018-12-07 2022-09-27 FineLine Technologies Systems and methods for maintaining automated quality control during tire manufacture using specialized RFID tags
US11752716B2 (en) 2018-12-07 2023-09-12 FineLine Technologies Systems and methods for maintaining automated quality control during tire manufacture using specialized RFID tags
KR20230060656A (en) * 2021-10-28 2023-05-08 금호타이어 주식회사 Tire vulcanization bladder

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