KR20220043716A - Bottom die for scrap backflow prevention - Google Patents

Bottom die for scrap backflow prevention Download PDF

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Publication number
KR20220043716A
KR20220043716A KR1020200127439A KR20200127439A KR20220043716A KR 20220043716 A KR20220043716 A KR 20220043716A KR 1020200127439 A KR1020200127439 A KR 1020200127439A KR 20200127439 A KR20200127439 A KR 20200127439A KR 20220043716 A KR20220043716 A KR 20220043716A
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South Korea
Prior art keywords
scrap
piercing
present
hole
prevention
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KR1020200127439A
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Korean (ko)
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박용순
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피스템코 주식회사
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Priority to KR1020200127439A priority Critical patent/KR20220043716A/en
Publication of KR20220043716A publication Critical patent/KR20220043716A/en

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B26HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26FPERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/02Perforating by punching, e.g. with relatively-reciprocating punch and bed
    • B26F1/14Punching tools; Punching dies
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B26HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26DCUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/18Means for removing cut-out material or waste
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B26HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26FPERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/38Cutting-out; Stamping-out
    • B26F1/44Cutters therefor; Dies therefor

Abstract

The present invention relates to a button die formed with a punching hole in the vertical direction in the center. More particularly, the present invention provides a button die for preventing scrap backflow configured such that two or more prevention grooves of a predetermined length are formed at equal intervals in the longitudinal direction on an inner circumferential surface of a punching hole, but the prevention grooves are formed as grooves of φ0.3 and 0.05㎜. Since the piercing process is performed without inserting a separate ejector pin into a piercing punch due to a simple and efficient structure, the present invention reduces costs of inserting the ejector pin, improves durability of the piercing punch, and prevents backflow of scrap during the piercing process of a small hole of φ3.0 or less.

Description

스크랩 역류방지용 버튼 다이{Bottom die for scrap backflow prevention}Button die for scrap backflow prevention

본 발명은 스크랩 역류방지용 버튼 다이에 관한 것으로, 더욱 상세하게는 버튼 다이의 펀칭홀 내주면에 등간격으로 배치된 다수의 방지홈을 형성하여 피어싱(piercing) 시 스크랩(scrap)이 역류되는 것을 방지하도록 하는 스크랩 역류방지용 버튼 다이에 관한 것이다.The present invention relates to a button die for preventing backflow of scrap, and more particularly, to prevent backflow of scrap during piercing by forming a plurality of prevention grooves arranged at equal intervals on the inner circumferential surface of a punching hole of the button die. It relates to a button die for preventing scrap backflow.

일반적으로 피어싱(piercing) 공정은 구멍이 없는 재료에 펀치를 가격하여 구멍을 뚫는 공정 또는 작은 구멍에 펀치를 압입하여 구멍을 넓히는 공정으로서, 이러한 공정에는 피어싱 펀치과 작업 다이, 즉 본 발명의 버튼 다이가 사용되고 있다.In general, the piercing process is a process of punching a hole by hitting a material without a hole or a process of pressing a punch into a small hole to widen the hole. is being used

상기한 피어싱 공정은 PET 필름 또는 금속판(이하, '가공물'이라 함)이 안착하는 작업 다이와 승강동작으로 소재에 구멍을 뚫는 펀치와 그 펀치 날끝이 통과하도록 다이에 홀이 형성되어 펀칭 후, 발생하는 스크랩이 홀로 떨어짐으로써 가공물에 다수의 구멍이 일괄적으로 형성되도록 한다.The above-mentioned piercing process involves a work die on which a PET film or a metal plate (hereinafter referred to as a 'workpiece') is seated, a punch that punches a hole in the material by lifting and lowering, and a hole is formed in the die so that the tip of the punch blade passes through. As the scrap falls into the hole, a plurality of holes are formed at once in the workpiece.

[도 1]은 이러한 공정을 도시한 것으로, 펀치(100)의 하단 날끝이 펀칭시 가공물에 구멍을 뚫어 발생하는 스크랩(200)과 더불어 작업다이(300)에 형성된 홀(301)로 진입하게 되고, 이후 상승하는 펀치(100)와 홀(301)에 정지되었던 스크랩(200) 사이가 진공상태와 더불어 작업시 발생하는 정전기에 의해서 상승하는 펀치(100)를 따라 스크랩(200)이 역방향으로 상승하여 작업다이(300) 상면에 스크랩(200)이 쌓이게 됨으로써, 다음 펀칭작업시 간섭하는 장애물이 되어 정밀한 펀칭작업을 수행하기가 곤란하게 되어 가공물의 불량률이 높아지고, 특히 무인으로 작동되는 펀칭기인 경우에는 작업다이(300) 상면에 쌓인 스크랩(200)을 제때에 제거할 수 없어서 불량률이 더 증가하게 되며, 불량작업을 계속해서 수행하면 정밀장치인 펀칭기의 오작동으로 인하여 파손되는 큰 문제점이 발생하게 되는 것이다.[Figure 1] shows this process, and the lower edge of the punch 100 enters the hole 301 formed in the work die 300 together with the scrap 200 generated by punching a hole in the workpiece during punching. , Then, the scrap 200 rises in the reverse direction along the rising punch 100 by static electricity generated during operation with the vacuum state between the rising punch 100 and the scrap 200 stopped in the hole 301. As the scrap 200 is piled up on the upper surface of the work die 300, it becomes an obstacle that interferes with the next punching operation, making it difficult to perform a precise punching operation. Since the scrap 200 accumulated on the upper surface of the die 300 cannot be removed in time, the defect rate further increases, and if the defective work is continued, it is damaged due to a malfunction of the punching machine, which is a precision device.

따라서 종래에는 상기와 같은 문제점을 해결하기 위해, 피어싱 펀치(piercing punch) 내부에 밀핀을 삽입하여 상기 펀치를 따라 상승 시 밀핀이 스크랩(scrap)을 밀어서 낙하하는 방식을 사용하고 있다.Therefore, in the prior art, in order to solve the above problems, a method is used in which a mill pin is inserted into a piercing punch and the mill pin pushes the scrap to fall while ascending along the punch.

그러나 φ3.0 이하의 작은 홀은 피어싱 펀치(Piercing Punch) 내부에 밀핀 삽입이 불가능하고, 삽입하여도 피어싱 펀치(Piercing Punch)의 강도가 취약해지는 문제점이 있었다.However, for small holes of φ3.0 or less, it is impossible to insert a push pin inside the piercing punch, and even if inserted, there is a problem in that the strength of the piercing punch is weak.

본 발명은 상기와 같은 문제점을 해결하기 위한 것으로, 버튼 다이의 내주면에 와이어 컷팅을 이용하여 작은 방지홈을 만들어서 스크랩이 상기 방지홈을 따라서 피어싱(piercing) 시 미세 회전을 하도록 함으로써 피어싱(piercing) 타발 부위 와 피어싱 펀치(piercing punch)의 삽입 부위에 따른 상기 방지홈의 위치 변화로 스크랩(Scrap)의 역류 현상을 방지하도록 하는 스크랩 역류방지용 버튼 다이를 제공하는 데 그 목적이 있다.The present invention is to solve the above problems, by making a small prevention groove on the inner circumferential surface of the button die using wire cutting so that the scrap is finely rotated when piercing along the prevention groove, thereby piercing piercing An object of the present invention is to provide a button die for preventing backflow of scrap, which prevents the backflow of scrap by changing the position of the prevention groove according to the part and the insertion part of the piercing punch.

상기한 목적을 달성하기 위한 본 발명에 따른 스크랩 역류방지용 버튼 다이는, 중심부에 수직방향으로 펀칭홀이 형성된 버튼 다이에 있어서, 상기 펀칭홀의 내주면에 길이방향으로 소정길이의 방지홈이 등간격으로 둘 이상 형성되어 지되, 상기 방지홈은 φ0.3과 0.05㎜의 홈으로 형성되도록 구성되는 것을 특징으로 한다. In the button die for preventing scrap backflow according to the present invention for achieving the above object, in the button die in which a punching hole is formed in a vertical direction in the center, the prevention grooves of a predetermined length in the longitudinal direction on the inner circumferential surface of the punching hole are two at equal intervals It is formed above, but the prevention groove is characterized in that it is configured to be formed as a groove of φ0.3 and 0.05 mm.

또한, 상기 방지홈은 1~2°의 기울기를 가지도록 구성되는 것을 특징으로 한다.In addition, the prevention groove is characterized in that it is configured to have a slope of 1 ~ 2 °.

본 발명은 간단하면서도 효율적인 구조로 피어싱 펀치에 별도의 밀핀을 삽입하지 않고서도 피어싱 공정이 이루어지므로 상기 밀핀 삽입에 따른 비용절감과 함께 피어싱 펀치의 내구성 개선 및 φ3.0 이하의 작은 홀의 피어싱 공정 시 스크랩 역류를 방지하도록 하는 매우 유용한 발명인 것이다.The present invention has a simple and efficient structure, and since the piercing process is performed without inserting a separate push pin into the piercing punch, cost reduction due to the push pin insertion, durability improvement of the piercing punch, and scrap during the piercing process of small holes of φ3.0 or less It is a very useful invention to prevent backflow.

도 1 - 종래의 피어싱 공정을 도시한 작동사태도.
도 2 - 본 발명의 버튼 다이를 도시한 사시도.
도 3 - 도 2의 평면도 및 단면도.
Figure 1 - Operation state diagram showing a conventional piercing process.
Figure 2 - A perspective view showing the button die of the present invention.
Fig. 3 - a plan view and a cross-sectional view of Fig. 2;

상기한 목적 및 효과를 달성하기 위한 본 발명을 바람직한 실시예를 통해 더욱 상세히 설명하면 다음과 같다.The present invention for achieving the above object and effect will be described in more detail through preferred embodiments as follows.

본 발명에 따른 스크랩 역류방지용 버튼 다이는, 중심부에 수직방향으로 펀칭홀(11)이 형성된 버튼 다이(10)에 있어서, 상기 펀칭홀(11)의 내주면에 길이방향으로 소정길이의 방지홈(12)이 등간격으로 둘 이상 형성되어 지되, 상기 방지홈(12)은 φ0.3과 0.05㎜의 홈으로 형성되도록 구성된다.In the button die for preventing scrap backflow according to the present invention, in the button die 10 in which a punching hole 11 is formed in a vertical direction at the center, an prevention groove 12 of a predetermined length in the longitudinal direction on the inner circumferential surface of the punching hole 11 ) are formed at equal intervals, and the prevention grooves 12 are configured to be formed with grooves of φ0.3 and 0.05 mm.

상기 방지홈(12)은 φ3.0 이하의 작은 홀을 가공물에 형성하는 경우, 피어싱 펀치에 별도의 밀핀을 삽입하지 않고서도 피어싱 공정이 가능하도록 하기 위한 구성으로, 펀칭홀(11)의 내주면에 길이방향으로 소정 깊이(0.05㎜)와 직경(φ0.3)을 가지도록 소정길이 형성된다.The prevention groove 12 is configured to enable the piercing process without inserting a separate push pin into the piercing punch when a small hole of φ3.0 or less is formed in the workpiece. A predetermined length is formed to have a predetermined depth (0.05 mm) and a diameter (φ0.3) in the longitudinal direction.

이때 상기 방지홈(12)은 와이어 컷팅을 이용하여 형성되고, 등간격으로 다수 배치되는데 [도3]의 (a)에 도시된 바와 같이, 3개로 구성됨이 바람직하다.At this time, the prevention grooves 12 are formed using wire cutting, and a plurality of are arranged at equal intervals, and as shown in (a) of [Fig.

그리고 상기 방지홈(12)은 1~2°의 기울기를 가지도록 구성됨이 바람직한데, 이는 펀칭홀(11) 내부에 와류 현상에 의한 미세 회전을 일으키기 위함이며, 이로 인해 1차적으로 스크랩이 상기 펀칭홀(11)의 상부로 역류하는 것을 방지하게 된다.And it is preferable that the prevention groove 12 is configured to have an inclination of 1 to 2°, which is to cause micro-rotation due to a vortex phenomenon inside the punching hole 11. It prevents backflow to the upper part of the hole 11 .

물론 상기 미세 회전과 함께 방지홈(12)에 의해 스크랩과 펀치 사이의 진공상태를 상쇄시키는 효과를 가짐은 당연하다.Of course, it is natural to have the effect of canceling the vacuum state between the scrap and the punch by the prevention groove 12 together with the fine rotation.

또한, 상기 방지홈(12)에는 피어싱을 위해 펀칭홀(11) 내로 인입되는 피어싱 펀치에 의해 인위적인 버(Burr)가 생성되는데, 상기 버(Burr)에 의해 스크랩이 역류되는 것을 2차로 방지하게 되는 것이다.In addition, an artificial burr is created in the prevention groove 12 by the piercing punch introduced into the punching hole 11 for piercing, and the burr prevents the scrap from flowing backwards. will be.

즉 상기 피어싱 펀치가 인입되어 그 끝단이 최하단에 위치한 순간, 상기 피어싱 펀치의 끝단과 동일선상에 위치한 방지홈(12)에는 인위적인 버(Burr)가 생성되고, 상기 버(Burr)로 인해 스크랩의 역류를 억제하게 되는 것이다.That is, at the moment when the piercing punch is drawn in and its end is located at the lowest end, an artificial burr is created in the prevention groove 12 located on the same line as the end of the piercing punch, and the burr causes the scrap to flow backwards. will inhibit

이처럼 상기한 구성을 갖는 본 발명 스크랩 역류방지용 버튼 다이(10)는, 피어싱 펀치에 별도의 밀핀을 삽입하지 않도록 하는 간단하면서도 효율적인 구조로 비용절감과 함께 상기 피어싱 펀치의 내구성 개선 및 스크랩 역류를 억제하는 효과를 갖게 되는 것이다.As described above, the present invention button die for preventing backflow of scrap 10 having the above configuration is a simple and efficient structure that does not insert a separate push pin into the piercing punch, thereby reducing cost and improving durability of the piercing punch and suppressing the reverse flow of scrap it will have an effect.

상술한 바와 같이 본 발명은 비록 한정된 실시예에 의해 설명되었으나, 본 발명은 이것에 한정되지 않으며 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자에 의해 본 발명의 기술사상과 아래에 기재될 특허청구범위의 균등범위 내에서 다양한 수정 및 변형이 가능하다 할 것이다.As described above, although the present invention has been described by way of limited embodiments, the present invention is not limited thereto, and the technical idea of the present invention and patents to be described below by those skilled in the art to which the present invention pertains Various modifications and variations are possible within the scope of equivalents of the claims.

* 도면의 주요부분에 대한 부호의 설명 *
10: 본 발명 버튼 다이
11: 펀칭홀 12: 방지홈
* Explanation of the symbols for the main parts of the drawing *
10: the present invention button die
11: Punching hole 12: Prevention groove

Claims (2)

중심부에 수직방향으로 펀칭홀(11)이 형성된 버튼 다이(10)에 있어서,
상기 펀칭홀(11)의 내주면에 길이방향으로 소정길이의 방지홈(12)이 등간격으로 둘 이상 형성되어 지되, 상기 방지홈(12)은 φ0.3과 0.05㎜의 홈으로 형성되도록 구성되는 것을 특징으로 하는 스크랩 역류방지용 버튼 다이.
In the button die 10 in which the punching hole 11 is formed in the center in the vertical direction,
Two or more prevention grooves 12 of a predetermined length are formed at equal intervals on the inner circumferential surface of the punching hole 11 in the longitudinal direction, and the prevention grooves 12 are configured to be formed with grooves of φ0.3 and 0.05 mm. Scrap backflow prevention button die, characterized in that.
제1항에 있어서,
상기 방지홈(12)은 1~2°의 기울기를 가지도록 구성되는 것을 특징으로 하는 스크랩 역류방지용 버튼 다이.
The method of claim 1,
The prevention groove 12 is a scrap backflow prevention button die, characterized in that it is configured to have an inclination of 1 ~ 2 °.
KR1020200127439A 2020-09-29 2020-09-29 Bottom die for scrap backflow prevention KR20220043716A (en)

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KR102515516B1 (en) 2022-11-11 2023-03-30 주식회사 유진테크놀로지 Device for rising preventing scrap rise of notching mold for manufacturing electrode of secondary battery
KR102517439B1 (en) 2022-11-01 2023-04-03 주식회사 우원기술 Notching mold for secondary battery electrode plate processing
KR102535344B1 (en) 2022-11-01 2023-05-26 주식회사 우원기술 High speed electrode notching system for secondary battery
KR102637916B1 (en) 2023-06-09 2024-02-19 주식회사 티더블유하이텍 Notching mold enabling forcibly ejecting of scrap
KR20240027961A (en) 2022-08-24 2024-03-05 주식회사 티더블유하이텍 Notching mold preventing rising-up of scrap

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KR20240027961A (en) 2022-08-24 2024-03-05 주식회사 티더블유하이텍 Notching mold preventing rising-up of scrap
KR102517439B1 (en) 2022-11-01 2023-04-03 주식회사 우원기술 Notching mold for secondary battery electrode plate processing
KR102535344B1 (en) 2022-11-01 2023-05-26 주식회사 우원기술 High speed electrode notching system for secondary battery
KR102515516B1 (en) 2022-11-11 2023-03-30 주식회사 유진테크놀로지 Device for rising preventing scrap rise of notching mold for manufacturing electrode of secondary battery
KR102637916B1 (en) 2023-06-09 2024-02-19 주식회사 티더블유하이텍 Notching mold enabling forcibly ejecting of scrap

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