KR20070081808A - Travers winding device for winder - Google Patents

Travers winding device for winder Download PDF

Info

Publication number
KR20070081808A
KR20070081808A KR1020060013930A KR20060013930A KR20070081808A KR 20070081808 A KR20070081808 A KR 20070081808A KR 1020060013930 A KR1020060013930 A KR 1020060013930A KR 20060013930 A KR20060013930 A KR 20060013930A KR 20070081808 A KR20070081808 A KR 20070081808A
Authority
KR
South Korea
Prior art keywords
timing belt
winding
bobbin
support
winder
Prior art date
Application number
KR1020060013930A
Other languages
Korean (ko)
Inventor
권영호
김환국
Original Assignee
권영호
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 권영호 filed Critical 권영호
Priority to KR1020060013930A priority Critical patent/KR20070081808A/en
Publication of KR20070081808A publication Critical patent/KR20070081808A/en

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/30—Treatment of water, waste water, or sewage by irradiation
    • C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/02—Aerobic processes
    • C02F3/12—Activated sludge processes
    • C02F3/20—Activated sludge processes using diffusers
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/04—Disinfection
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/20—Prevention of biofouling
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2305/00—Use of specific compounds during water treatment
    • C02F2305/10—Photocatalysts

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Microbiology (AREA)
  • Winding Filamentary Materials (AREA)

Abstract

A traverse winding device for a winder is provided to realize a uniform winding with a simple structure and to conveniently regulate the reciprocating distance and the reciprocating speed by controlling a servo motor. A support(21) longer than the length of a winding bobbin is installed in the traverse winding device for a winder. A plurality of timing belt pulleys(23) each having a timing belt are installed at both ends of the support. A servo motor(24) is connected to one of the timing belt pulleys. A yarn guide(25) is directly fixed to the timing belt so as to be moved together with the timing belt. An attaching roller(26) is provided in the support right above the timing belt. The yarn which has passed through the yarn guide passes between the attaching roller and the winding bobbin to be wound on the winding bobbin.

Description

와인더의 트래버스 권취장치{Travers winding device for winder}Traverse winding device for winder

도 1은 본 발명에 의한 와인딩기의 부분 정면도1 is a partial front view of a winding machine according to the present invention

도 2는 본 발명의 요부 사시도2 is a perspective view of main parts of the present invention;

도 3은 도 1의 작동상태를 나타낸 부분 상세도3 is a partial detailed view showing the operating state of FIG.

도 4는 도 2의 부분 평면도 4 is a partial top view of FIG. 2

***도면 중 주요 부분에 대한 부호의 설명****** Description of the symbols for the main parts of the drawings ***

1: 와인딩기 2: 권취보빈1: winding machine 2: winding bobbin

10: 스핀들 11: 몸체10: spindle 11: body

12: 지지축 20: 트래버스장치12: support shaft 20: traverse device

21: 지지대 22: 타이밍벨트21: support 22: timing belt

23, 23': 타이밍벨트풀리 24: 서보모터23, 23 ': Timing belt pulley 24: Servo motor

25: 실가이드 26: 밀착롤러25: Seal Guide 26: Adhesive Roller

본 발명은 와인더에서 실을 보빈에 감기 위한 권취장치에 관한 것으로, 좀더 구체적으로는 실을 권취할 보빈이 장착되는 스핀들 바로 옆에 설치되어 실이 권취 될 때 실이 보빈의 길이 방향으로 균등하게 권취되게 하는 트래버스 장치를 개선하여, 간단한 구성으로 균등한 권취를 이룩하고 캠의 왕복거리와 속도 등을 효율적으로 조절토록 하려는 것이다.The present invention relates to a winding device for winding a thread on a bobbin in a winder, and more specifically, is installed next to a spindle on which a bobbin to wind the thread is mounted so that the thread is evenly extended in the longitudinal direction of the bobbin when the thread is wound up. It is to improve the traverse device to be wound, to achieve even winding with a simple configuration and to efficiently control the reciprocation distance and speed of the cam.

주지된 바와 같이 와인더는 원사공장에서 제조되어 대용량으로 권취된 실을 제직할 직물에 따른 해당 제직기에 사용될 수 있게 하거나 기타 염색 등 다른 공정을 위하여 다른 보빈에 필요한 양만큼 옮겨 감아주는 것으로서, 이러한 실을 권취하는 과정에서는 실이 보빈에 길이방향으로 골고루 감기도록 하기 위하여 실가이드가 보빈의 길이를 왕복하는 트래버스 장치를 이용한다.As is well known, the winder can be used in the weaving machine according to the fabric to be manufactured in a yarn factory and wound in a large capacity, or it can be wound up by the amount required for other bobbins for other processes such as dyeing. In the winding process, the thread guide uses a traverse device for reciprocating the length of the bobbin so that the thread is evenly wound in the longitudinal direction on the bobbin.

이러한 트래버스 장치는 원사의 권취품질을 결정하는 중요한 부분의 하나인데, 종래 와인더의 트래버스 장치를 살펴보면, 모터의 동력을 전달받아 회전하는 트래버스캠을 보빈이 장착되는 스핀들의 바로 옆에 구성하여 권취보빈을 회전시키는 동력을 동시에 연결하여 권취와 동시에 트래버스 캠을 작동토록 하는데, 이와 같은 종래의 트래버스장치는 많은 문제점을 갖고 있었다.Such a traverse device is one of the important parts to determine the winding quality of the yarn. Looking at the traverse device of the conventional winder, the traverse cam that rotates by receiving the power of the motor is configured right next to the spindle on which the bobbin is mounted, the bobbin. At the same time by connecting the power to rotate the rotation and to operate the traverse cam at the same time, such a conventional traverse device had a number of problems.

즉, 종래의 트래버스캠장치는 회전하는 축의 외면에 왕복되는 나선형의 캠요홈을 정밀하게 형성하여야 하고 실이나 보빈의 종류에 따라서 왕복되는 길이를 조절하기 위한 장치를 내부에 구성하여야 하는 등 트래버스캠 장치의 구성이 매우 복잡하고 따라서 비용이 매우 고가인 단점이 있었으며, 수리 등의 유지관리에도 비용과 인력 및 시간이 소요되는 것이었다. That is, the conventional traverse cam device has to form a helical cam groove reciprocating on the outer surface of the rotating shaft precisely, and the traverse cam device such that the device for adjusting the reciprocating length according to the type of thread or bobbin should be configured inside. The configuration was very complicated and therefore very expensive, and maintenance, such as repair, was costly, manpower and time consuming.

또 보빈의 회전에 이용되는 동력을 트래버스장치에 연결하여 구동하므로 권취시 왕복하는 속도를 변화시키는 것이 어려워 권취품질이 다양하지 못한 단점도 있었다.In addition, since the power used to rotate the bobbin is connected to the traverse device to drive, it is difficult to change the speed of reciprocation during winding, there was also a disadvantage that the winding quality was not varied.

상기한 문제점을 감안하여 안출한 본 발명은 트래버스 장치를 구성함에 있어서 최대한 간단한 구성으로도 트래버스 장치로서 필요한 기능들을 모두 구비한 트래버스 장치를 제공함으로써 저렴한 비용으로 간단한 구성으로 트래버스 장치를 구성할 수 있게 하고, 아울러 권취상태가 다양한 권취제품을 제공할 수 있도록 함을 목적으로 하는 것이다. The present invention devised in view of the above problems provides a traverse device having all the necessary functions as a traverse device even in the simplest configuration of the traverse device, so that the traverse device can be configured with a simple configuration at a low cost. In addition, the purpose is to enable the winding state to provide a variety of winding products.

본 발명은 보빈을 장착하여 회전시키는 스핀들장치의 바로 옆에 서보모터에 의해 회전하는 타이밍벨트를 설치하고 타이밍벨트 상에 실가이드를 고정시켜 서보모터의 제어에 의해 타이밍벨트가 일정한 구간만을 왕복토록 함으로써 실이 실가이드에 보빈에 균등하게 감기도록 함을 특징으로 하는바, 이하 첨부된 도면에 의거 본 발명의 바람직한 구성을 살펴보면 다음과 같다. The present invention is to install a timing belt to be rotated by a servo motor immediately next to the spindle device for mounting and rotating the bobbin and to fix the seal guide on the timing belt to reciprocate only a certain section of the timing belt under the control of the servomotor. The bar is characterized in that it is wound evenly to the bobbin on the thread guide, look at the preferred configuration of the present invention according to the accompanying drawings as follows.

도 1은 본 발명에 의한 와인딩기의 부분 정면도, 도 2는 본 발명의 요부 사시도, 도 3은 도 1의 작동상태를 나타낸 부분 상세도, 도 4는 도 2의 부분 평면도이다. 1 is a partial front view of a winding machine according to the present invention, Figure 2 is a perspective view of the main part of the present invention, Figure 3 is a partial detailed view showing the operating state of Figure 1, Figure 4 is a partial plan view of FIG.

본 발명은 스핀들(10)이 설치된 몸체(11)가 아래의 지지축(12)을 중심으로 회동하면서 스핀들(10)에 장착되는 권취보빈(2)이 밀착롤러(26)에 밀착된 상태로 실을 권취하도록 된 와인더기(1)에 있어서, 스핀들(10)이 회동하였을 때 근접하는 위치에 트래버스장치(20)를 구성하되, 통상 장착되는 권취보빈(2)의 길이보다 긴 지지대(21)를 설치하고 지지대(21)의 양끝에는 타이밍벨트(22)가 설치되는 타이밍벨트풀리(23)(23')를 설치하며, 그 중 일측의 타이밍벨트풀리(23)에는 서보모터(24)를 연결설치하였다.According to the present invention, the winding bobbin 2 mounted on the spindle 10 is in close contact with the contact roller 26 while the body 11 on which the spindle 10 is installed rotates about the support shaft 12 below. In the winder (1) to be wound, the traverse device 20 is configured at a position close to when the spindle 10 is rotated, the support 21 is longer than the length of the winding bobbin (2) is usually mounted And timing belt pulleys 23 and 23 'provided with timing belts 22 at both ends of the support 21, and one of the timing belt pulleys 23 is connected to the servo motor 24. It was.

그리고 타이밍밸트(22)에는 실가이드(25)를 직접 고정시켜 타이밍벨트(22)와 같이 이동하도록 하였으며, 타이밍벨트(22) 바로 위의 지지대(21)에는 밀착롤러(26)를 구성하여 실가이드(25)를 통과한 실이 밀착롤러(26)와 권취보빈(2)에 사이를 통과하면서 권취보빈(2)에 감기도록 한 것이다. In addition, the seal guide 25 is directly fixed to the timing belt 22 to move together with the timing belt 22. The seal guide 26 is formed on the support 21 directly above the timing belt 22 to seal the guide. Thread passed through (25) is to be wound around the winding bobbin (2) while passing between the contact roller 26 and the winding bobbin (2).

도면 중 미설명된 부호 3은 피드롤러, 4는 장력조절장치이다. Reference numeral 3 in the figure is a feed roller, 4 is a tension control device.

와인딩기(1)의 전반적인 작용을 먼저 살펴보면, 권취모터(미 도시됨)의 작용으로 권취보빈(2)이 장착된 스핀들(10)이 회전하면서 실이 권취보빈(2)에 감기게 되는데, 피드롤러(3)와 장력조절장치(4)를 거쳐 트래버스장치(20)의 실가이드(25)를 통과한 후 권취보빈(2)에 감기는 것이고, 이러한 과정에서 본 발명의 트래버스장치(20)를 통과하면서 권취보빈(2)의 길이 방향으로 실이 골고루 감기게 되는 것이다. Looking at the overall action of the winding machine (1), first, the thread is wound on the take-up bobbin (2) while the spindle (10) with the take-up bobbin (2) is rotated by the action of the take-up motor (not shown), the feed After passing through the seal guide 25 of the traverse device 20 through the roller 3 and the tension adjusting device 4 and wound around the winding bobbin (2), in this process the traverse device 20 of the present invention The thread is wound evenly in the longitudinal direction of the take-up bobbin (2) while passing through.

본 발명에 의하면 서보모터(24)의 작동에 의해 일정한 거리만큼 타이밍벨트(22)가 왕복이동을 반복하는 것이고, 이에 따라 타이밍벨트(22)에 결합된 실가이드(25)가 실을 권취보빈(2)의 길이방향으로 왕복하면서 권취보빈(2)에 골고루 감게 하는 것이다.According to the present invention, the timing belt 22 repeats the reciprocating movement by a predetermined distance by the operation of the servomotor 24. Accordingly, the seal guide 25 coupled to the timing belt 22 winds the bobbin ( It is wound evenly around the winding bobbin (2) while reciprocating in the longitudinal direction of 2).

서보모터(24)는 정역회전이 가능함은 물론이고 회전하는 속도 및 회전수의 제어가 가능하므로 필요한 거리를 왕복하도록 제어하여 목적으로 달성할 수 있을 것이고, 이에 따라 보빈의 크기 및 실의 종류 등에 따라 실가이드가 이동하는 거리를 미리 셋팅하여 두면 편리하고 원활하게 균일한 권취를 가능하게 하며, 권취보빈(2)을 회전시는 동력과는 별도로 서보모터(24)를 구동시키므로 왕복속도를 변화시키기 용이한 것으로 다양한 권취상태를 갖는 권사제품을 생산할 수 있는 것이다. Since the servo motor 24 is capable of forward and reverse rotation as well as control of the rotation speed and rotation speed, the servo motor 24 may be controlled to reciprocate the required distance and thus may be achieved for the purpose, according to the size of the bobbin and the type of thread. Setting the distance in which the seal guide moves in advance enables convenient and smooth uniform winding, and it is easy to change the reciprocation speed because the servomotor 24 is driven separately from the power when the winding bobbin 2 is rotated. One is to produce a winding product having a variety of winding state.

밀착롤러(26)는 스핀들(10)이 권취를 시작할 때, 몸체(99)가 트래버스장치(20) 쪽으로 젖혀진 상태가 되므로 권취보빈(2)이 밀착롤러(26)에 밀착된 상태가 되면서 실을 권취될 때 실이 권취보빈(2)에 밀착되게 하는 작용을 한다.When the spindle 10 starts winding, the close roller 26 is in a state in which the body 99 is turned toward the traverse device 20, and thus the winding bobbin 2 is brought into close contact with the close roller 26. When the coil is wound, the thread acts to be in close contact with the bobbin (2).

이상 설명한 바와 같은 본 발명에 의하면, 실을 권취보빈(2)에 균등하게 감기 위한 실가이드(25)의 왕복이 서보모터(24)에 의해 왕복하는 타이밍벨트(22)에 의해 이루어지는 것이므로 종래 캠 방식의 트래버스장치에 비하여 매우 간단한 구성으로 일정한 거리의 왕복을 할 수 있고 서보모터의 제어로 왕복거리의 조절과 왕복속도의 조절 등도 매우 편리하게 할 수 있게 된 것으로서, 저렴한 비용으로 트래버스장치를 구성하게 되고 고장이 적어 유지관리가 편리하며, 다양한 권취상태를 갖는 권사제품을 저렴한 비용으로 제공할 수 있게 되는 등 매우 유용한 발명이라 할 수 있다.According to the present invention as described above, since the reciprocation of the seal guide 25 for winding the thread evenly to the take-up bobbin 2 is made by the timing belt 22 reciprocating by the servo motor 24, the conventional cam method Compared to the traverse device of the traverse device, it is possible to make a reciprocation of a certain distance with a very simple configuration, and to control the reciprocation distance and the reciprocation speed by the control of the servo motor, and to configure the traverse device at a low cost. It is a very useful invention, such as easy to maintain and easy to maintain, and to provide winding products having various winding states at low cost.

Claims (1)

스핀들(10)이 설치된 몸체(11)가 아래의 지지축(12)을 중심으로 회동하면서 스핀들(10)에 장착되는 권취보빈(2)이 밀착롤러(26)에 밀착된 상태로 실을 권취하도록 된 와인더기(1)에 있어서, The winding bobbin 2 mounted on the spindle 10 is wound around the contact roller 26 while the body 11 on which the spindle 10 is installed rotates about the support shaft 12 below. In the used winder (1), 스핀들(10)이 회동하였을 때 근접하는 위치에 트래버스장치(20)를 구성하되, 통상 장착되는 권취보빈(2)의 길이보다 긴 지지대(21)를 설치하고 지지대(21)의 양끝에는 타이밍벨트(22)가 설치되는 타이밍벨트풀리(23)(23')를 설치하며, 그 중 일측의 타이밍벨트풀리(23)에는 서보모터(24)를 연결설치하며,When the spindle 10 is rotated, the traverse device 20 is configured to be close to each other, and a support belt 21 longer than the length of the winding bobbin 2, which is normally mounted, is installed, and both ends of the support belt 21 include timing belts ( 22 is installed timing belt pulley (23) (23 ') is installed, one of the timing belt pulley (23) of the servo motor 24 is connected and installed, 타이밍밸트(22)에는 실가이드(25)를 직접 고정시켜 타이밍벨트(22)와 같이 이동하도록 하였으며, 타이밍벨트(22) 바로 위의 지지대(21)에는 밀착롤러(26)를 구성하여 실가이드(25)를 통과한 실이 밀착롤러(26)와 권취보빈(2)에 사이를 통과하면서 권취보빈(2)에 감기도록 함을 특징으로 하는 와인더의 트래버스 권취장치.The seal belt 25 was directly fixed to the timing belt 22 to move together with the timing belt 22, and the support roller 21 was formed on the support 21 directly above the timing belt 22 to form a seal guide ( 25. The traverse winding device of a winder, characterized in that the thread passed through the winding roller (2) and the winding bobbin (2) is wound around the winding bobbin (2).
KR1020060013930A 2006-02-14 2006-02-14 Travers winding device for winder KR20070081808A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020060013930A KR20070081808A (en) 2006-02-14 2006-02-14 Travers winding device for winder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020060013930A KR20070081808A (en) 2006-02-14 2006-02-14 Travers winding device for winder

Publications (1)

Publication Number Publication Date
KR20070081808A true KR20070081808A (en) 2007-08-20

Family

ID=38611615

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020060013930A KR20070081808A (en) 2006-02-14 2006-02-14 Travers winding device for winder

Country Status (1)

Country Link
KR (1) KR20070081808A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20100130281A (en) * 2009-06-03 2010-12-13 코오롱인더스트리 주식회사 Machine for manufacturing hollow fiber membrane module
KR101433254B1 (en) * 2013-08-19 2014-08-27 주식회사 명진기공 Travers winding device for winder
KR101532739B1 (en) * 2013-10-18 2015-07-01 우동만 Yarn winding device and its method
KR101675835B1 (en) * 2016-09-05 2016-11-14 이연우 Thread winder have double bobin running gear
KR20170129127A (en) * 2015-03-09 2017-11-24 게오르그 샴 게젤샤프트 미트 베슈랭크터 하프퉁 운트 콤파니 코만디트 게젤샤프트 Winder

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08158173A (en) * 1994-12-08 1996-06-18 Ishikawa Seisakusho Ltd Yarn-winder for double-twisting spindle embedding winder therein
KR100407765B1 (en) * 2001-07-10 2003-12-03 강훈철 Winding Apparatus
KR200350803Y1 (en) * 2003-12-17 2004-05-17 이화공업주식회사 A traverse electronic drive device by combination of servo motor and timing belt of the twisting machine
KR20050105799A (en) * 2004-05-03 2005-11-08 권영호 Improved winding device for winder

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08158173A (en) * 1994-12-08 1996-06-18 Ishikawa Seisakusho Ltd Yarn-winder for double-twisting spindle embedding winder therein
KR100407765B1 (en) * 2001-07-10 2003-12-03 강훈철 Winding Apparatus
KR200350803Y1 (en) * 2003-12-17 2004-05-17 이화공업주식회사 A traverse electronic drive device by combination of servo motor and timing belt of the twisting machine
KR20050105799A (en) * 2004-05-03 2005-11-08 권영호 Improved winding device for winder

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20100130281A (en) * 2009-06-03 2010-12-13 코오롱인더스트리 주식회사 Machine for manufacturing hollow fiber membrane module
KR101433254B1 (en) * 2013-08-19 2014-08-27 주식회사 명진기공 Travers winding device for winder
KR101532739B1 (en) * 2013-10-18 2015-07-01 우동만 Yarn winding device and its method
KR20170129127A (en) * 2015-03-09 2017-11-24 게오르그 샴 게젤샤프트 미트 베슈랭크터 하프퉁 운트 콤파니 코만디트 게젤샤프트 Winder
KR101675835B1 (en) * 2016-09-05 2016-11-14 이연우 Thread winder have double bobin running gear

Similar Documents

Publication Publication Date Title
US8079206B2 (en) Ring spinning mechanism with fixed ring location
KR100407765B1 (en) Winding Apparatus
CN107624104A (en) Up- coiler
KR20070081808A (en) Travers winding device for winder
CN108002113B (en) Traverse device and yarn winding device
KR20100084460A (en) Yarn winding device and spinning machine
KR20000069721A (en) Method and device for spooling a continuously running thread
KR20100033035A (en) Take up winder
KR200467335Y1 (en) winding device for yarn
CN1938210B (en) Take-up winding device
KR102372420B1 (en) Winding apparatus for rubber string
KR100641681B1 (en) Winding tention control method and system for winder
KR20060111745A (en) Winding tention control method for winder
EP2752513B1 (en) Spinning machine
EP3865442A1 (en) Yarn winder and package production method
KR20180000208U (en) a tension adjusting device of warping machine system
KR200350803Y1 (en) A traverse electronic drive device by combination of servo motor and timing belt of the twisting machine
KR200305698Y1 (en) Winder for winding warp round beam
JP4397820B2 (en) Fiber bundle winding device
CN107922139B (en) Yarn installation aiding device
KR200173021Y1 (en) Winding machine
KR200241812Y1 (en) Unannounced transmission of winder machine
KR100562713B1 (en) Improved winding device for winder
KR102653720B1 (en) Winding device for winding carbon fiber yarn
US5820062A (en) Winding machine

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E601 Decision to refuse application