KR100198487B1 - Tyre tread cutting and sticking method thereof - Google Patents
Tyre tread cutting and sticking method thereof Download PDFInfo
- Publication number
- KR100198487B1 KR100198487B1 KR1019960041837A KR19960041837A KR100198487B1 KR 100198487 B1 KR100198487 B1 KR 100198487B1 KR 1019960041837 A KR1019960041837 A KR 1019960041837A KR 19960041837 A KR19960041837 A KR 19960041837A KR 100198487 B1 KR100198487 B1 KR 100198487B1
- Authority
- KR
- South Korea
- Prior art keywords
- tread
- cutting
- tire
- cylindrical drum
- drum
- Prior art date
Links
- 238000005520 cutting process Methods 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title description 9
- 238000003825 pressing Methods 0.000 claims abstract description 18
- 238000005304 joining Methods 0.000 claims abstract description 12
- 238000001125 extrusion Methods 0.000 claims abstract description 7
- 238000004804 winding Methods 0.000 claims abstract description 4
- 230000008878 coupling Effects 0.000 claims description 6
- 238000010168 coupling process Methods 0.000 claims description 6
- 238000005859 coupling reaction Methods 0.000 claims description 6
- 238000001816 cooling Methods 0.000 description 3
- 238000000465 moulding Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Classifications
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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)
- B29D30/52—Unvulcanised treads, e.g. on used tyres; Retreading
- B29D30/68—Cutting profiles into the treads of tyres
-
- 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
- B29C48/001—Combinations of extrusion moulding with other shaping operations
- B29C48/0022—Combinations of extrusion moulding with other shaping operations combined with cutting
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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
- B29D30/0016—Handling tyres or parts thereof, e.g. supplying, storing, conveying
-
- 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
- B29D30/24—Drums
- B29D30/26—Accessories or details, e.g. membranes, transfer rings
-
- 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
- B29D30/0016—Handling tyres or parts thereof, e.g. supplying, storing, conveying
- B29D2030/0038—Handling tyre parts or semi-finished parts, excluding beads, e.g., storing, transporting, transferring
-
- 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
- B29D30/30—Applying the layers; Guiding or stretching the layers during application
- B29D2030/3064—Details, accessories and auxiliary operations not otherwise provided for
- B29D2030/3085—Details, accessories and auxiliary operations not otherwise provided for the layers being applied being already cut to the appropriate length, before the application step
-
- 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
- B29D30/68—Cutting profiles into the treads of tyres
- B29D2030/685—Cutting profiles into the treads of tyres before tread vulcanization
Abstract
본 발명은 압출후 냉각이 완료된 타이어 트레드를 이송하기 위한 이송장치와, 상기 이송장치와 동일하게 이동하며 트레드를 절단하는 절단기와, 절단된 트레드를 1회전 권취시킨 후 접합하기 위한 타이어 성형기의 벨트드럼으로 이루어진 타이어 트레드 절단 및 접합장치에 있어서, 상기 이송장치상에 원통드럼(1)을 설치하고, 상기 원통드럼(1)의 하측면에 센서로 감지된 트레드를 압착하기 위한 압착롤(3)을 구비하며, 압착된 트레드를 절단하기 위한 회전식 절단기(19)를 구비한 것을 특징으로 하는 타이어 트레드 절단 접합장치에 관한 것이다.The present invention is a belt drum of a conveying device for transporting the finished tire tread after extrusion, a cutter for cutting the tread moving in the same way as the conveying device, and a tire forming machine for joining after winding the cut tread one rotation In the tire tread cutting and joining device, the cylindrical drum (1) is installed on the transfer device, the pressing roll (3) for pressing the tread detected by the sensor on the lower side of the cylindrical drum (1) The present invention relates to a tire tread cutting and joining apparatus, comprising a rotary cutter 19 for cutting a compressed tread.
Description
제1도는 본 발명에 따른 타이어 트레드 절단 및 접합장치의 레이아웃.1 is a layout of the tire tread cutting and bonding apparatus according to the present invention.
제2도는 본 발명에 따른 타이어 트레드 절단 및 접합장치중 트레드 절단장치의 분해사시도.2 is an exploded perspective view of the tread cutting device of the tire tread cutting and bonding apparatus according to the present invention.
제3도는 종래의 트레드 절단방법에 의해서 절단된 트레드의 접합 모양을 나타내는 도면.3 is a view showing the joint shape of the tread cut by the conventional tread cutting method.
제4도는 본 발명의 타이어 트레드 절단 및 접합장치로 원통드럼상에서 트레드를 절단한 후, 벨트드럼상에서 트레드를 접합했을 때의 모양을 나타내는 도면.4 is a view showing the shape when the tread is bonded on the belt drum after cutting the tread on the cylindrical drum with the tire tread cutting and joining apparatus of the present invention.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
1 : 원통드럼 2 : 이송장치1: cylindrical drum 2: conveying device
3 : 압착롤 4 : 공기압 실린더3: pressing roll 4: pneumatic cylinder
6 : 공기압 실린더용 고정 브라켓 26 : 벨트드럼6: fixed bracket for pneumatic cylinder 26: belt drum
본 발명은 타이어 트레드 절단 및 접합장치와 그 방법에 관한 것이다.The present invention relates to a tire tread cutting and bonding apparatus and method thereof.
종래에는 타이어 트레드를 절단할 때, 컨베이어상에 설치된 절단용 절단기를 사용하여 왔다. 이는 압출라인에 있어서, 각각의 압출기로 들어간 각각의 고무성분이 압출기 헤드를 통하여 하나의 프로파일(Profile)을 형성하고, 컨베이어를 타고 흘러서 냉각을 위한 냉각탱크를 거치며, 접합공정에서 필요한 일정길이로 절단하는 일련의 연속된 과정중의 하나이다.Conventionally, when cutting a tire tread, a cutting cutter provided on a conveyor has been used. In the extrusion line, each rubber component into each extruder forms a profile through the extruder head, flows through the conveyor, passes through a cooling tank for cooling, and cuts to a certain length required in the joining process. Is one of a series of processes.
그러나, 종래에는 컨베이어상에서 절단하여 성형기의 벨트드럼에 부착시킨 후 트레드의 끝부분을 결합하게 됨으로서, 항상 트레드의 양단면의 접착이 어렵고, 또한 원주상의 양단부쪽의 반경이 달라져서 정확한 결합이 어려워 작업자가 일일이 손으로 잡아늘린 후에 부착함으로 타이어의 품질에 좋지 못한 영향을 미치고 있는 실정이었다.However, in the related art, by cutting on a conveyor and attaching the end of the tread after attaching it to the belt drum of the molding machine, it is difficult to always adhere the two ends of the tread, and the radius of the both ends of the circumference is different, thus making it difficult for the operator. After attaching by hand after stretching, the situation was adversely affecting the quality of the tire.
일반적으로, 타이어의 트레드는 하나 또는 둘이상의 소재를 압출하여 구성되는데, 압출된 압출물은 테이크 어웨이 콘베이어(Take-away Conveyor), 문자마킹장치, 쉬링키지 컨베이어(shrinkage conveyor)를 거쳐 냉각냉크내로 들어가 냉각된다. 냉각이 끝난 트레드(압출물)는 저장을 위한 페스튜너(festooner)를 거쳐 모터로 구동되는 원통형의 로터리 절단기(skiver)에 의해 절단되는데, 상기 절단기로 트레드를 절단하는 방법에는 컨베이어의 이동속도와 동일한 속도로 절단기를 이동하면서 절단하는 방법과(movng type), 절단기를 정지시킨 채로 절단기 앞의 페스튜너에 저장하면서 절단하는 방법(stop type)등 크게 두가지가 있다. 상기 방법들은 컨베이어의 전후단에 속도 감지용 센서를 부착하여 트레드의 선속도를 감지한 후, 이를 컨베이어 구동용 모터 등으로 피드-백(Feed back)하여 컨베이어의 이동속도를 만들어 낸다. 또한, 로터리 절단기를 컨베이어상의 프레임에 고정시킨 후, 고속회전하는 절단기를 선형으로 왕복 이동시킴으로서 타이어 트레드를 절단하게 된다. 이와 같이 하여 절단한 트레드를 타이어 성형기의 벨트드럼에 1회전 권취한 다음 접합시킬 때, 상기 트레드의 양쪽 절단면이 V자 형태를 이루기 때문에 정확한 접합이 이루어지지 않고, 따라서 별도로 작업자가 일일이 트레드 끝부분을 잡아 늘리는 작업을 해야 하므로 타이어의 품질이 저하됨은 물론 트레드의 자동공급 및 자동접합(Automatic Splicing)이 곤란한 문제점이 있었다.Typically, the tread of a tire consists of extruding one or more materials, the extruded extrudate passing through a take-away conveyor, a text marking device, a shrinkage conveyor and into a cold chill. Is cooled. The cooled tread (extruded) is cut by a cylindrical rotary skiver driven by a motor through a festooner for storage. The tread with the cutter is the same as the moving speed of the conveyor. There are two main methods: cutting while moving the cutter at a speed (movng type) and cutting while stopping the cutter while storing it in the fastener in front of the cutter. The above methods detect a linear speed of the tread by attaching a speed sensor to the front and rear ends of the conveyor, and then feed it back to a conveyor driving motor to produce a moving speed of the conveyor. Further, after fixing the rotary cutter to the frame on the conveyor, the tire tread is cut by linearly reciprocating the cutter which rotates at high speed. When the tread cut in this way is wound around the belt drum of the tire forming machine once, and then joined, the cutting surface of each of the treads has a V-shape, so that the precise bonding is not achieved. Since it is necessary to increase the work of the tire, the quality of the tire is deteriorated, as well as the automatic supply of the tread and automatic splicing (Automatic Splicing) was difficult.
본 발명은 상기의 문제점을 해결하기 위해 안출된 것으로서, 벨트드럼과 동일한 직경의 원통드럼을 암출라인의 절단기 장치에 적용하여 트레드의 양쪽 절단면이 원형상에서 정확하게 접합되도록 절단한 후, 성형기의 벨트드럼에 권취하여 접함함으로서, 타이어의 품질 향상과 더불어 자동절단으로 인한 작업자의 노동력을 감소시킬 수 있는 타이어 트레드 절단 및 접합장치와 그 방법을 제공함을 목적으로 한다.The present invention has been made to solve the above problems, by applying a cylindrical drum of the same diameter as the belt drum to the cutting device of the retrieval line to cut both ends of the tread to be accurately bonded in a circular shape, and then to the belt drum of the molding machine It is an object of the present invention to provide a tire tread cutting and joining device and a method thereof by winding and contacting the tire to improve the quality of the tire and reduce the labor force of the worker due to automatic cutting.
상기 목적을 달성하기 위하여, 본 발명은 이송장치상에 원통드럼을 설치하고, 상기 원통드럼의 하측면에 센서로 감지된 트레드를 압착하기 위한 압착롤을 구비하며, 압착된 트레드를 절단하기 위한 회전식 절단기를 구비하여, 압출라인상에서 정확한 접합면이 생기도록 하는 장치를 제공하는 것을 특징으로 한다.In order to achieve the above object, the present invention is provided with a cylindrical drum on the transfer device, provided with a pressing roll for pressing the tread detected by the sensor on the lower side of the cylindrical drum, rotary for cutting the compressed tread It is provided with a cutter, characterized in that to provide a device for producing a precise bonding surface on the extrusion line.
또한, 본 발명은 압출후 냉각이 완료된 타이어 트레드의 길이를 정확히 측정하는 단계와; 센서로 트레드를 감지하는 단계와; 일정길이의 트레드가 원통드럼상에 접촉되면, 압착롤로 이 트레드를 압착하는 단계와; 트레드 절단위치에서, 트레드 이송장치를 위치 고정하는 단계와; 회전식 절단기를 이송하여 트레드를 절단하는 단계와; 트레드 공급기를 이용하여, 컨베이어로 이송된 트레드를 벨트드럼에 이송하는 단계와; 이송된 트레드를 벨트드럼에 1회전 귄취한 다음 접합하는 단계; 로 이루어지는 타이어 트레드 절단 및 접합방법을 제공하는 것을 특징으로 한다.In addition, the present invention comprises the steps of accurately measuring the length of the tire tread is completed after extrusion; Detecting a tread with a sensor; Pressing a tread of a predetermined length onto the cylindrical drum with a pressing roll; At the tread cutting position, positioning the tread feeder; Cutting the tread by transporting the rotary cutter; Using a tread feeder, transferring the tread transferred to the conveyor to the belt drum; Attaching the transferred tread to the belt drum one turn and then joining it; To provide a tire tread cutting and bonding method consisting of.
이하, 본 발명을 첨부도면을 참조하여 상세히 설명하면 다음과 같다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.
본 발명에서는 압출된 트레드를 정확히 길이 측정한 후, 벨트드럼(26)의 직경과 동일한 크기의 원통드럼(1)상에서 트레드를 절단하여 트레드 공급기(23)로 벨트드럼(26)에 공급하고, 이후 벨트드럼(26)을 회전시켜(1회전) 접합하기 위한 것으로, 제1도와 제2도에 나타난 바와같이, 압출하여 나온 타이어의 트레드는 냉각탱크를 거쳐 페스튜너(20)를 통과하고, 롤러 콘베이어(21)에 의해 일정 선속도로 이동되어 원통드럼(1)에 접하게 된다.In the present invention, after accurately measuring the extruded tread, the tread is cut on the cylindrical drum (1) of the same size as the diameter of the belt drum 26 and supplied to the belt drum 26 by the tread feeder 23, and then As shown in FIG. 1 and FIG. 2, the tread of the extruded tire passes through the cooling tank, passes through the pestuner 20, and the roller conveyor, as shown in FIG. 1 and FIG. By 21 it is moved at a constant linear velocity and comes into contact with the cylindrical drum 1.
원통드럼(1)상에서의 절단에는 트레드를 감지하는 센서로 트레드를 감지하고, 일정량의 길이가 원통드럼(1)위에 접촉하게 되면 압착롤(3)에 의하여 트레드를 압착하며, 트레드 이송장치(2)는 절단하기 위한 위치에 고정하여 회전식 절단기(19)로 트레드를 절단하게 된다.The cutting on the cylindrical drum (1) detects the tread with a sensor that detects the tread, and when a certain amount of length is in contact with the cylindrical drum (1), the tread is compressed by the pressing roll (3), the tread feeder (2) ) Is fixed at the position for cutting to cut the tread with the rotary cutter 19.
절단된 트레드는 롤러 콘베이어(21)상에 이송되어 트레드 공급기(23)에 의해 위치확정후 벨트드럼(26)에 접촉시키고, 이후 회전시키면 트레드의 부착은 완료하게 된다.The cut tread is conveyed on the roller conveyor 21 to be brought into contact with the belt drum 26 after positioning by the tread feeder 23, and then rotated to complete the attachment of the tread.
이를 위하여, 제2도의 동력전달 과정을 살펴보면, 먼저 트레드 이송장치(2)는 모터(14)에 의해 구동된 다음, 제1커플링(13)를 통해, 소형 체인스플라킷(12)의 동력을 대형 체인스플라킷(11)으로 전달하고, 다시 제2커플링(10)에 의하여, 일정 비율의 속도와 토크(Torque)를 얻을 수 있는 기어(8)(9)를 통하여 먼저 원통드럼의 바깥쪽 샤프트(7)를 구동시키면 원통드럼(1)상에서 좌우로 이송된다. 또한, 원통드럼(1)을 구동하기 위해서는 모터(18)을 구동시켜 커플링(17), 체인스플라킷(15)(16)을 구동하면 되며, 이때 원통드럼의 앞단에서 감지된 속도에 맞도록 그 속도를 조정하며 회전하게 된다.To this end, referring to the power transmission process of FIG. 2, first, the tread transfer device 2 is driven by the motor 14, and then, through the first coupling 13, the power of the small chain sprocket 12 is transferred. The outer side of the cylindrical drum first through the gears (8) (9), which are transmitted to the large chain sprocket (11), and again obtain a constant ratio of speed and torque by the second coupling (10). When the shaft 7 is driven, it is conveyed from side to side on the cylindrical drum 1. In addition, in order to drive the cylindrical drum 1, the coupling 18 and the chain sprockets 15 and 16 may be driven by driving the motor 18, and at this time, to match the speed detected at the front end of the cylindrical drum. It rotates by adjusting its speed.
압착 롤(3)은 롤러 컨베이어(21)상에 공기압 실린더용 고정 브라케트(6)에 고정하고, 여기에 다시 공기압 실린더(4)을 부착하며, 트레드를 누르는 압착롤(3)로 압착한 후 절단하므로 트레드의 미끄럼짐을 방지하여 정확한 절단이 이루어지게 된다.The pressing roll 3 is fixed to the fixed bracket 6 for the pneumatic cylinder on the roller conveyor 21, and the pneumatic cylinder 4 is attached thereto again, and the pressing roll 3 is pressed with the pressing roll 3 for pressing the tread. Since cutting, the tread is prevented from slipping and accurate cutting is achieved.
본 발명에 따른 제4도를 보면, 종래기술에 따른 제3도와 달리 접합부분이 정확히 맞추어져 있게 된다.Referring to FIG. 4 according to the present invention, unlike FIG. 3 according to the prior art, the joints are precisely aligned.
이상에서 설명한 바와 같이, 본 발명에 따르면, 트레드를 원통드럼에 접착하고, 압착롤로 압착한 후 절단하므로, 정확한 트레드의 길이와 정확한 트레드 단면을 얻을 수 있다. 또한, 벨트드럼상에 접착할 때, 압출라인의 원통드럼의 직경이 벨트드럼의 직경과 동일하므로 트레드 1개의 양끝면 접합시 완전 접합이 이루어지게 되며, 또한 압출라인에서 절단된 트레드를 접합후 바로 공급하므로, 트레드의 선팽창계수 변화를 최소화하여 타이어의 품질향상을 꾀할 수 있으며, 이와 더불어 정확한 트레드의 길이와 정확한 트레드 끝부분의 절단면을 가짐으로서 원가절감이 개선된 효과를 갖게 된다.As described above, according to the present invention, since the tread is adhered to the cylindrical drum, pressed with a pressing roll, and cut, the correct tread length and the correct tread cross section can be obtained. In addition, when adhering on the belt drum, the diameter of the cylindrical drum of the extrusion line is the same as the diameter of the belt drum, so that the complete bonding is performed when joining both ends of one tread. By supplying, it is possible to improve the quality of the tire by minimizing the change in the coefficient of linear expansion of the tread, and the cost reduction is improved by having the correct tread length and the cutting surface of the tread end.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019960041837A KR100198487B1 (en) | 1996-09-24 | 1996-09-24 | Tyre tread cutting and sticking method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019960041837A KR100198487B1 (en) | 1996-09-24 | 1996-09-24 | Tyre tread cutting and sticking method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR19980022624A KR19980022624A (en) | 1998-07-06 |
| KR100198487B1 true KR100198487B1 (en) | 1999-06-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019960041837A KR100198487B1 (en) | 1996-09-24 | 1996-09-24 | Tyre tread cutting and sticking method thereof |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR100198487B1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100759921B1 (en) | 2006-07-26 | 2007-09-18 | 한국타이어 주식회사 | A joint assembly apparatus of belt split |
| KR100956232B1 (en) | 2008-09-01 | 2010-05-04 | 금호타이어 주식회사 | Joint Splicing Apparatus for Semi-finished Material Sheets of Tire |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20230119839A1 (en) * | 2020-03-26 | 2023-04-20 | Bridgestone Bandag, Llc | The use of a moisture reservoir for retreading |
-
1996
- 1996-09-24 KR KR1019960041837A patent/KR100198487B1/en not_active IP Right Cessation
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100759921B1 (en) | 2006-07-26 | 2007-09-18 | 한국타이어 주식회사 | A joint assembly apparatus of belt split |
| KR100956232B1 (en) | 2008-09-01 | 2010-05-04 | 금호타이어 주식회사 | Joint Splicing Apparatus for Semi-finished Material Sheets of Tire |
Also Published As
| Publication number | Publication date |
|---|---|
| KR19980022624A (en) | 1998-07-06 |
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