KR910005541B1 - Dies of tuntable use - Google Patents

Dies of tuntable use Download PDF

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Publication number
KR910005541B1
KR910005541B1 KR1019890004139A KR890004139A KR910005541B1 KR 910005541 B1 KR910005541 B1 KR 910005541B1 KR 1019890004139 A KR1019890004139 A KR 1019890004139A KR 890004139 A KR890004139 A KR 890004139A KR 910005541 B1 KR910005541 B1 KR 910005541B1
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South Korea
Prior art keywords
hinge
mold
dies
horizontal center
support piece
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KR1019890004139A
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Korean (ko)
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KR900014048A (en
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박지용
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박지용
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D11/00Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00; Twisting
    • B21D11/02Bending by stretching or pulling over a die
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21KMAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K1/00Making machine elements
    • B21K1/74Making machine elements forked members or members with two or more limbs, e.g. U-bolts, anchors

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Moulds, Cores, Or Mandrels (AREA)

Abstract

In a conventional die for a hinge of tunntable consisted of upper (A) and lower die (B) which are aligned to even the center of pin hole (2'), the curved (4) and straight surface (5) with supporting rod of cam, top of curved surface (8), which is a horizontal center of cam, and a horizontal center of supporing rod (6) is connected by the special shape at a boundary between upper (A) and lower die (B). These dies have advantages of high productivity, easy separation of finished goods from dies, reducing fraction defective, and long maintenance.

Description

턴테이블용 경첩 제조용 금형Mold for manufacturing hinge for turntable

제1도는 본 발명에 의하여 경첩을 제조하는 상태를 도시하는 평면도.1 is a plan view showing a state of manufacturing a hinge according to the present invention.

제2도는 본 발명에 의하여 경첩을 제조하는 상태를 도시하는 종단면도.2 is a longitudinal sectional view showing a state in which a hinge is manufactured according to the present invention.

제3도는 종래 발명에 의하여 경첩을 제조하는 상태를 도시하는 종단면도.3 is a longitudinal sectional view showing a state in which a hinge is manufactured by a conventional invention.

제4도는 종래 발명에 의하여 경첩을 제조하는 상태를 도시하는 평면도.4 is a plan view showing a state of manufacturing a hinge according to the conventional invention.

제5도는 턴테이블용 경첩의 사시도.5 is a perspective view of a hinge for a turntable.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

1 : 하체 2 : 작동관1: lower body 2: operating tube

3 : 핀 4 : 캠면3: pin 4: cam surface

5 : 직선부 8 : 정상곡면부5: straight portion 8: normal curved portion

본 발명은 턴테이블용 경첩의 상부작동간을 사출성형할 때 일회 작업시에 많은 수량으로 대량생산할 수 있도록 상,하금형을 형성함으로써 제조원가를 절감하여 소비자들로 하여금 경제적인 부담을 덜 수 있도록 함과 아울러 생산자에게는 많은 이익을 부여할 수 있도록 한 턴테이블용 경첩 제조용 금형에 관한 것이다.The present invention is to reduce the manufacturing cost by reducing the manufacturing cost by forming the upper and lower molds so as to mass-produce a large quantity in one operation when injection molding the upper operation of the hinge for the turntable In addition, the present invention relates to a mold for manufacturing a hinge for a turntable that can give a lot of benefits to a producer.

일반적으로 턴테이블용 경첩은 제5도에 도시한 바와 같이, 하체(1)에 핀(3)으로 상부작동간(2)을 회동가능하게 조립하여 하체(1)내에 탄력설치된 스프링(도시없음)이 작동간(2)의 캠면(4)을 항상 밀착되도록 작용함으로써 더스트커버가 개폐될 때 적은 힘으로도 개방되게 함과 아울러 닫힐 때는 서서히 닫히도록 함으로써 음반으로 음악을 청취할 때 바늘이 튀거나 소음이 발생되는 것을 방지토록 하는 것이다.In general, as shown in FIG. 5, the hinge for the turntable includes a spring (not shown) elastically installed in the lower body 1 by assembling the upper operation section 2 with the pin 3 on the lower body 1 so as to be rotatable. The cam surface 4 of the operation 2 is always in close contact with the dust cover so that the dust cover is opened with a small force when it is opened and closed, and when it is closed, it is closed slowly so that the needle may pop or hear when listening to music on the record. To prevent it from happening.

이러한 경첩은 하체(1)의 상부로 핀(3)에 의하여 힌지연결되는 작동간(2)은 핀(3)의 중심과는 상이한 원형캠면(4)의 직선부(5)가 이어지게 형성되는 형상을 갖는다.This hinge is formed in such a way that the straight line 5 of the circular cam surface 4, which is different from the center of the pin 3, is connected between the operation 2 hinged by the pin 3 to the upper part of the lower body 1. Has

종래 이러한 경첩중 상부작동간(2)을 사출성형함에 있어서는 제3도 및 제4도에 도시한 바와 같이, 상부금형과 하부금형의 단 2가지 금형 내에서 완성하기 위하여 지지편(6)이 수직으로 하부금형(B)내에 위치케하고, 이에 접하는 상부금형(A)에는 캠면(4)와 직선부(5)가 위치하도록 하여 전체적으로 완성되는 물품이 금형내에서 세워지는 상태로 된다.In the conventional injection molding of the upper operation section 2 of the hinge, as shown in FIGS. 3 and 4, the support piece 6 is vertical to complete in only two molds, the upper mold and the lower mold. It is placed in the lower mold (B), the upper mold (A) in contact with the cam surface 4 and the straight portion (5) is positioned so that the finished product as a whole is standing in the mold.

또한 상기 상부작동간(2)은 중앙의 주입구를 중심으로 4방에 하나씩 위치하게 되기 때문에 1회 작업에 최대로 4개의 상부작동간(2)을 성형할 수 있게 되어 진다.In addition, since the upper operation section 2 is located in each of the four rooms centered on the injection hole in the center it is possible to form a maximum of four upper operation section (2) in one operation.

이에 따라 일정두께를 갖고 비교적 길이가 긴 지지편(6)이 하부금형(B)에 수직으로 세워짐에 따라 사출완성 후 제품을 분리하는 과정이 매우 번거롭고 고도의 기술이 요구되어 금형에서 분리할 때 제품이 파손되는 경우가 빈번히 발생할 뿐만 아니라, 평행을 유지해야만 되는 지지편(6)을 부득이 상광하협식으로 완만히 경사지게 하므로서 완성된 물품의 사용시에 더스트 커버와 조립이 원활히 이루어지지 않아 쉽게 지지편(6)에서부터 더스터 커버가 사용중에 이탈되는 경우가 발생하였다.Accordingly, as the support piece 6 having a certain thickness and a relatively long length is erected perpendicularly to the lower mold B, the process of separating the product after injection completion is very cumbersome and requires a high level of skill. Not only does this often occur, but also the support piece 6, which must be kept parallel, is inclined gently in a normal and subtractive manner so that the dust cover and the assembly are not smoothly used when the finished article is used. Occurs that the dust cover is released during use.

그리고 이와 같이 물품이 세워진 상태로 금형이 완성되므로 1개의 금형에 최대 4개의 물품만이 1회 사출시에 완성되므로서 작업능률이 떨어져 제조원가가 상승되는 결과로 생산자와 소비자가 커다란 경제적 손실을 입고 있는 등의 문제점이 있다.In this way, the mold is completed with the goods standing up, so only up to four items in one mold are completed at a time of injection. There is such a problem.

본 발명은 이러한 종래의 문제점을 해소하기 위하여 안출된 것으로서 이를 첨부된 도면에 의해 상세히 설명하면 다음과 같다.The present invention has been made in order to solve such a conventional problem will be described in detail by the accompanying drawings as follows.

핀공(2')의 중심과 상이한 캠면(4)과 직선부(5)가 이어지게 지지편(6)에 일체로 상,하금형(A)(B)으로 사출성형토록 된 통상의 것을 구성함에 있어서, 원형캠면(4)의 수평중심점에 해당되는 정상곡면부(8)와 지지편(6)의 수평중심부가 상,하금형(A)(B)의 경계접촉선에 "

Figure kpo00001
"형으로 이어지게 위치토록 된 것으로서 도면중 미설명부호 10은 핀공제조용 코어핀, 11은 완성품 분리용핀을 각각 표시한다.In the construction of a conventional one in which the cam face 4 and the straight portion 5 which are different from the center of the pin hole 2 'are connected to the support piece 6 integrally with the upper and lower molds A and B, , The horizontal center portion of the top curved portion 8 and the support piece 6 corresponding to the horizontal center point of the circular cam surface 4 are struck by the boundary contact line between the upper and lower molds (A) and (B).
Figure kpo00001
In the drawings, reference numeral 10 denotes a core pin for manufacturing a pin, and 11 denotes a pin for separating a finished product.

이와 같은 본 발명은 첨부도면 제2도에서 보는 바와 같이 상부작동간(2)의 외부형상을 따라 상, 하금형(A)(B)을 파여지게하되 원형의 캠면(5) 수평중심선에 해당되는 정상곡면부(8)가 좌측의 경계선에 있도록 하여 하부금형(B)의 방향으로 직선부(5)와 핀공(2')을 성형하기 위한 코어핀(10)이 횡으로 하부금형(B)의 양측으로부터 끼워지게 하고, 정상곡면부(8)와 "

Figure kpo00002
"형으로 지지편(6)의 중앙을 통과하는 경계선을 따라 상, 하금형(A)(B)이 맞닿게 하면, 첨부도면 제1도에서 예시한 바와 같이 1개의 전체 상,하금형(A)(B)에 다수개(도면에서는 예로서 8개로 나타냄)의 완성품인 작동간(2)을 사출성형할 수가 있게된다.The present invention as shown in Figure 2 attached to the upper and lower die (A) (B) along the outer shape of the upper operation between the two (2) but the circular cam surface (5) corresponds to the horizontal center line The core pin 10 for forming the straight portion 5 and the pin hole 2 'in the direction of the lower mold B so that the top curved portion 8 is at the boundary line on the left side of the lower mold B horizontally. From both sides and the top surface (8)
Figure kpo00002
When the upper and lower molds A and B come into contact with each other along the boundary line passing through the center of the support piece 6 in a j-shape, one entire upper and lower molds A are illustrated as illustrated in FIG. In (B), a plurality of finished pieces (shown as eight by way of example in the drawing) can be injection molded.

따라서 1회의 사출성형시 여러 완성품이 동시 완성이 가능하고 작업완료 후 완제품을 금형에서 분리하는데 아무런 번거로움이나 숙련된 기술이 전혀 필요없이 신속히 분리제거할 수 있게되는 것이다.Therefore, several finished products can be completed simultaneously in one injection molding, and after completion of work, it can be quickly removed and removed without any hassle or skill to separate the finished product from the mold.

상술한 바와 같은 본 발명은 상,하금형(A)(B)의 동일 용량에도 많은 양의 제품을 1회에 동시 양산할 수 있어 생산자는 물론 소비자들에게 커다란 경제적 이익을 줄수 있을 뿐만 아니라, 완제품을 금형에서 분리하는데 아무런 번거로움과 불편없이 제품의 불량을 전혀 없앨 수 있음은 물론, 제품분리를 위한 지지편(6)에 완만한 경사나 구배를 주지않고 완성하므로 사용중 더스트 커버와 분리되는 등의 경우가 없이 영구히 사용할 수 있는 유용한 발명인 것이다.As described above, the present invention can mass-produce a large amount of products at the same time at the same capacity of the upper and lower molds (A) and (B) at the same time, which can give a great economic benefit not only to producers but also to consumers. To remove the defects of the product without any hassle and inconvenience in removing the mold from the mold, and is completed without giving a gentle slope or gradient to the support piece (6) for separation of the product. It is a useful invention that can be used permanently without a case.

Claims (1)

핀공(2')의 중심과 상이한 캠면(4)과 직선부(5)가 이어지게 지지편(6)에 일체로 상,하금형(A)(B)으로 사출성형토록된 통상의 것을 구성함에 있어서, 원형캠면(4)의 수평중심점에 해당되는 정상곡면부(8)와 지지편(6)의 수평중심부가 상,하금형(A)(B)의 경계접촉선에 "
Figure kpo00003
"형으로 이어지게 위치토록 된 것을 특징으로 하는 턴테이블용 경첩 제조용 금형.
In the construction of a conventional one in which the upper and lower molds (A) and (B) are injection molded integrally with the support piece 6 so that the cam surface 4 and the straight portion 5 which are different from the center of the pin hole 2 'are connected. , The horizontal center portion of the top curved portion 8 and the support piece 6 corresponding to the horizontal center point of the circular cam surface 4 are struck by the boundary contact line between the upper and lower molds (A) and (B).
Figure kpo00003
A mold for manufacturing a hinge for a turntable, characterized in that it is positioned so as to lead to a concave shape.
KR1019890004139A 1989-03-30 1989-03-30 Dies of tuntable use KR910005541B1 (en)

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KR1019890004139A KR910005541B1 (en) 1989-03-30 1989-03-30 Dies of tuntable use

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KR900014048A KR900014048A (en) 1990-10-22
KR910005541B1 true KR910005541B1 (en) 1991-07-31

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