KR970014999A - Tread forming device for weight reduction of tires - Google Patents

Tread forming device for weight reduction of tires Download PDF

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Publication number
KR970014999A
KR970014999A KR1019950030621A KR19950030621A KR970014999A KR 970014999 A KR970014999 A KR 970014999A KR 1019950030621 A KR1019950030621 A KR 1019950030621A KR 19950030621 A KR19950030621 A KR 19950030621A KR 970014999 A KR970014999 A KR 970014999A
Authority
KR
South Korea
Prior art keywords
tread
extruder
die
low density
rubber
Prior art date
Application number
KR1019950030621A
Other languages
Korean (ko)
Other versions
KR0135442B1 (en
Inventor
최준혁
최재억
Original Assignee
홍건희
한국타이어제조 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 홍건희, 한국타이어제조 주식회사 filed Critical 홍건희
Priority to KR1019950030621A priority Critical patent/KR0135442B1/en
Publication of KR970014999A publication Critical patent/KR970014999A/en
Application granted granted Critical
Publication of KR0135442B1 publication Critical patent/KR0135442B1/en

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Classifications

    • 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)
    • B29D30/52—Unvulcanised treads, e.g. on used tyres; Retreading
    • B29D30/58—Applying bands of rubber treads, i.e. applying camel backs
    • B29D30/62—Applying bands of rubber treads, i.e. applying camel backs by extrusion or injection of the tread on carcass
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/15—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor incorporating preformed parts or layers, e.g. extrusion moulding around inserts
    • B29C48/154—Coating solid articles, i.e. non-hollow articles
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/04—Condition, form or state of moulded material or of the material to be shaped cellular or porous
    • B29K2105/046—Condition, form or state of moulded material or of the material to be shaped cellular or porous with closed cells
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0037—Other properties
    • B29K2995/0063—Density
    • B29K2995/0064—Non-uniform density

Landscapes

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

Abstract

본 발명은 타이어의 경량화를 위한 트레드의 성형장치에 관한 것으로, 상기 트레드⑺의 압출성형시 내부의 일부분에 이 트레드⑺를 성형하는 원재료의 천연고무보다 밀도가 낮은 저밀도물질(Low Density Substance;12)이 일체로 성형됨으로써 트레드⑺의 중량이 20~5% 정도 줄어 타이어의 전체 중량이 10~20% 저감될 수 있을 뿐만 아니라, 주행시 타이어의 회전저항을 줄이면서 연료소비율도 낮출 수 있도록 한 것이다.The present invention relates to a tread forming apparatus for reducing the weight of a tire, and low density material (Low Density Substance; 12) having a lower density than the natural rubber of the raw material for forming the tread in a part of the interior during extrusion molding the tread By integrally molding, the weight of the treadmill is reduced by about 20 to 5%, thereby reducing the overall weight of the tire by 10 to 20% and reducing fuel consumption while reducing tire rolling resistance when driving.

Description

타이어의 경량화를 위한 트레드의 성형장치Tread forming device for weight reduction of tires

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 본 발명에 따른 트레드를 성형하기 위한 압출기의 개략적인 구성상태도,1 is a schematic configuration diagram of an extruder for forming a tread according to the present invention,

제2도는 제1도의 1차다이를 도시한 정면도,2 is a front view showing the primary die of FIG.

제3도는 제2도의 요부확대도,3 is an enlarged view of the main part of FIG.

제4도는 본 발명에 따른 압출기의 1차다이를 거쳐 성형된 1차트레드의 단면도,4 is a cross-sectional view of the primary tread formed through the primary die of the extruder according to the present invention,

제5도는 제1도의 2차다이를 도시한 정면도,5 is a front view showing the secondary die of FIG.

제6도는 본 발명에 따른 압출기의 2차다이를 거쳐 성형된 2차트레드의 단면도,6 is a cross-sectional view of the secondary tread formed through the secondary die of the extruder according to the present invention,

제7도는 종래 기술에 따른 트레드의 성형에 있어서 압출기에 장착되는 다이를 도시한 정면도.7 is a front view showing a die mounted to the extruder in the shaping of the tread according to the prior art.

Claims (3)

원재료인 천연고무에 각종 배합물이 적정비율로 혼합된 정련고무가 선단부에 소정형상의 다이를 장착한 압출기로 투입되어 이 압출기에 의해 강제압송되면서 상기 다이를 거쳐 단면이 소정형상으로 이루어지도록 압출성형되는 타이어용 트레드의 제조에 있어서, 상기 압출기⑴가 각각 다른 조성물로 배합된 정련고무를 공급받는 제1,2압출기(2,3)로 구성되되, 이 제1압출기⑵의 출구측 선단에는 다이의 하측 중공부⑷ 상면에 연직하 방향으로 길게 돌출되어 일체로 성형된 글루브성형매개물⑸을 다수개 갖춘 1차다이⑹가 고정되고, 상기 제2압출기⑶의 출구측 선단에는 상기 제1압출기⑵의 1차다이⑹를 거치면서 글루브성형매개물⑸에 의해 트레드⑺의 상면에 형성되는 글루브⑻내로 제2압출기⑶로부터 압송된 저밀도물질⑿을 압출시킬 수 있는 다수개의 통로⑼를 내부에 갖추고서 이 통로⑼가 연장된 선단의 주입구⑽를 하측 중공부⑷의 상면에 다수개 구비하고 있는 2차다이⑾가 고정되어져; 상기 압출기⑴의 제1압출기⑵로 일반적인 트레드⑺와 동일한 조성물이 공급되어 1차다이⑹를 거친 1차트레드(7')가 상면에 다수개의 글루브⑻를 형성한 상태로 압출성형되고, 이후 압출된 1차트레드(7')는 2차다이⑾로 진입하여 저밀도물질⑿을 압출시키는 제2압출기⑶에 의해 상기 글루브⑻내에 저밀도물질⑿을 채운 상태의 완성된 형태의 2차트레드(7')로 배출되어 상기 트레드⑺의 제조가 이루어지는 것을 특징으로 하는 타이어의 경량화를 위한 트레드의 성형장치.Refined rubber mixed with natural rubber, which is a raw material, in various ratios is introduced into an extruder equipped with a die having a predetermined shape at the tip, and is extruded to have a predetermined shape through the die while being forced by the extruder. In the manufacture of treads for tires, the extruder 로 comprises first and second extruders 2 and 3, which are supplied with refined rubber, each of which is formulated in a different composition. The primary die having a plurality of groove-forming media ⑸ integrally formed by protruding in the vertical direction and protruding in the vertical direction on the upper surface of the hollow portion 고정 is fixed, and the primary die of the first extruder 에는 at the end of the outlet side of the second extruder ⑶. A plurality of low density materials can be extruded from the second extruder into the grooves formed on the upper surface of the tread by the groove forming media. A secondary die having a plurality of injection holes in the upper end of the lower hollow portion having a passage ⑼ therein and having the passage ⑼ extended therein is fixed; The first extruder ⑴ of the extruder 공급 is supplied with the same composition as a general tread 되어, and the primary tread 7 ′ having passed through the first die 압출 is extruded to form a plurality of grooves on the upper surface, and then extruded. The primary tread 7 'enters the secondary die and enters the secondary tread 7' in a state in which the low density material is filled in the groove by a second extruder that extrudes the low density material. Tread forming apparatus for reducing the weight of the tire, characterized in that the discharge is made of the tread shock. 제1항에 있어서, 상기 제2압출기⑶로 공급되는 저밀도물질⑿이 클로즈드셀의 발포고무, 질석, 폼러버, 폼우레탄, 코튼, 저밀도 코우크등의 고무보다 낮은 밀도이면서 고무와의 접착성이 탁월한 물질로 이루어진 것을 특징으로 하는 타이어의 경량화를 위한 트레드의 성형장치.The low density material ⑿ supplied to the second extruder ⑿ has a lower density than the rubber such as foamed rubber, vermiculite, foam rubber, foam urethane, cotton, low density cork, etc. Tread forming device for lightening the tire, characterized in that made of an excellent material. 제1항에 있어서, 상기 1차다이⑹의 중공부⑷상면에 돌출되게 마련된 글루브성형매개물⑸은, 단면이 직사각형인 형태의 몸체부(5a)와 이 몸체부(5a)가 일체로 연장형성된 머리부(5b)로 이루어지되, 이 머리부(5b)는 단면이 원형이거나 사각형 또는 다각형 형태로 형성될 수 있으면서 특히 머리부(5b)가 사각형이나 다각형일 경우에는 몸체부(5a)의 길이(h1)가 바람직하게는 전체길이⒣의 50~80% 정도로 이루어지고, 머리부(5b)의 길이(h2)는 전체길이⒣의 20~50% 정도로 이루어지며, 또한 상기 머리부(5b)가 원형일 경우에는 이 머리부(5b)의 반경⒭이 전체길이⒣의 10~25%정도로 형성된 것을 특징으로 하는 타이어의 경량화를 위한 트레드의 성형장치.2. The groove forming medium VII of claim 1, wherein the groove-forming medium VII is provided to protrude on the hollow ⑷ upper surface of the primary die ,, and has a rectangular cross section and a head in which the body 5a is integrally formed. The head portion 5b may be formed in a circular, rectangular or polygonal cross section, and in particular, when the head portion 5b is rectangular or polygonal, the length h of the body portion 5a 1 ) is preferably made of about 50 ~ 80% of the total length ,, the length (h 2 ) of the head (5b) is made of about 20 to 50% of the total length ,, and also the head (5b) In the case of a circular shape, a tread forming apparatus for reducing the weight of a tire, characterized in that the radius 의 of the head portion 5b is formed at about 10 to 25% of the total length ⒣. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950030621A 1995-09-19 1995-09-19 A molding device of a tread for light weighing tire KR0135442B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019950030621A KR0135442B1 (en) 1995-09-19 1995-09-19 A molding device of a tread for light weighing tire

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950030621A KR0135442B1 (en) 1995-09-19 1995-09-19 A molding device of a tread for light weighing tire

Publications (2)

Publication Number Publication Date
KR970014999A true KR970014999A (en) 1997-04-28
KR0135442B1 KR0135442B1 (en) 1998-04-23

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Family Applications (1)

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KR1019950030621A KR0135442B1 (en) 1995-09-19 1995-09-19 A molding device of a tread for light weighing tire

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KR0135442B1 (en) 1998-04-23

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