KR920007387B1 - The making method for support spring - Google Patents

The making method for support spring Download PDF

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Publication number
KR920007387B1
KR920007387B1 KR1019900014292A KR900014292A KR920007387B1 KR 920007387 B1 KR920007387 B1 KR 920007387B1 KR 1019900014292 A KR1019900014292 A KR 1019900014292A KR 900014292 A KR900014292 A KR 900014292A KR 920007387 B1 KR920007387 B1 KR 920007387B1
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South Korea
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support
lower molds
support spring
manufacturing
cutting
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KR1019900014292A
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Korean (ko)
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KR920006050A (en
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오승석
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승경전자부품 주식회사
오승석
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Priority to KR1019900014292A priority Critical patent/KR920007387B1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00—Making other particular articles
    • B21D53/02—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers
    • B21D53/04—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers of sheet metal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00—Making other particular articles

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Springs (AREA)
  • Wire Processing (AREA)

Abstract

In a manufacturing method for support springs of a video tape cassette, a plate material is passed through a pair of upper and lower dies by a pair of upper and lower rollers operated by a servo motor intermittently. The upper and lower dies form a series of dies to form support springs progressively. In the first step the plate material is punched and cutted at the same time. In the second step the position of the plate material is set by insertion of pilot pin. The last step is a bending process to allow the support spring a proper angle of inclination. This method minimizes waste of material and shearing stress in the cutting process.

Description

비데오테이프 카세트의 서포트스프링 제조방법Method for manufacturing support spring of video tape cassette

제1도는 본 발명의 개략도.1 is a schematic diagram of the present invention.

제2a도는 본 발명의 제조공정을 나타낸 블럭도.Figure 2a is a block diagram showing a manufacturing process of the present invention.

제2b도는 종래의 제조공정 과정을 나타낸 블럭도.Figure 2b is a block diagram showing a conventional manufacturing process.

제3도는 본 발명에 의해 서포트스프링이 제작되는 과정을 나타낸 순서도.3 is a flowchart showing a process in which the support spring is manufactured by the present invention.

제4도는 종래의 방법에 의해 서포트스프링이 제작되는 과정을 나타낸 순서도.4 is a flow chart showing a process in which the support spring is manufactured by a conventional method.

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

A : 소재 3, 4 : 상, 하부금형A: Material 3, 4: Upper, lower mold

10 : 서포트스프링 11 : 지지면10: support spring 11: support surface

12 : 고정지지공 13 : 요홈공12: fixed support hole 13: groove groove

14 : 탄력부 16, 16' : 파일롯핀14: elastic portion 16, 16 ': pilot pin

18 : 절단다이 19 : 절단칼18: cutting die 19: cutting knife

본 발명은 비데오테이프 카세트의 부품으로 사용되는 서포트스프링의 제조방법에 관한 것으로, 특히 제조공정 과정을 개선하여 완성가공되는 서포트스프링이 규정치 이상의 텐션력과 탄력을 유지케하면서도 재료의 소모율은 최저화하면서 제조원가 절감효과를 얻도록 한 비데오테이프 카세트의 서포트스프링 제조방법에 관한 것이다.The present invention relates to a method for manufacturing a support spring used as a part of a video tape cassette, and in particular, to improve the manufacturing process, the finished support spring maintains tension and elasticity above a prescribed value while minimizing material consumption. The present invention relates to a method for manufacturing a support spring of a videotape cassette to obtain a manufacturing cost reduction effect.

일반적으로 일정형태가 부여되는 서포트스프링은 비데오테이프 카세트의 내부에 설치사용되는 주요부품중의 하나로서 비데오테이프를 감는 양측릴을 일정한 압력으로 눌러 주어 비데오테이프가 감기거나 풀릴때 그 상태를 일정하게 유지시켜주는 역할을 수행하게 된다.In general, the support spring, which is given a certain shape, is one of the main parts used to install the inside of the video tape cassette and presses both reels of the video tape with a constant pressure to maintain the state when the video tape is wound or unwound. It will play a role.

이와 같은 기능을 갖는 통상의 서포트스프링을 제조하기 위해 사용되고 있던 종래의 방법은 공정자체의 결함으로 인해 상당량의 재료손실을 초래하게 되면서 결과적으로는 제조단가를 상승시키는 문제점을 안고 있었던바, 그 과정을 첨부도면 제2b도와 제4도에 의거하여 간략하게 살펴보기로 한다.The conventional method used to manufacture a conventional support spring having such a function causes a considerable amount of material loss due to the defect of the process itself and consequently raises the manufacturing cost. Based on the attached drawings 2b and 4 will be briefly described.

먼저, 일정폭과 두께를 갖는 판상의 소재(a)(스테인레스재)를 준비하여 이송로울러와 서보모터로 구축되는 이송장치에 의해 일정길이만큼씩 간헐적으로 연속이송되도록 함과 동시에 미리 준비된 금형의 승강작동이 병행되도록 하면서 소재(a)의 양단형태를 성형해 주기 위한 1차절단 성형공정, 공정지지공(b)을 형성하기 위한 펀칭과 소재(a)에 일정폭을 부여하기 위한 부분절단작업이 병행되는 2차성형 절단공정, 양측의 탄력부(C)형성을 위한 순차적 절곡공정(1-3차) 및 파롯지지작업을 포함하는 최후의 절단가공이 순차적으로 진행되도록 하면서 일정형태를 갖는 하나의 서포트스프링이 연속적으로 제조되도록 하고 있는바, 이러한 일련의 연속공정 과정중 최후의 절단공정을 행하면서 하나의 서포트스프링을 완성가공할때 상당크기의 소재제거분(P)이 필연적으로 발생될 수 밖에 없어 불필요한 재료손실을 초래하고 있었으며, 이러한 재료손실은 제품의 제조단가를 상승시킴은 물론 경제적측면에서도 바람직하지 못했던 한편, 소재제거분이 일정크기를 유지하게 되면서 절단시 상당한 전단응력이 발생되게 됨에 따라 완성품의 절단면 또는 그 주변부위의 변형을 가져올 우려가 많았음은 물론 소재제거분이 사방으로 비산되면서 작업환경을 어지럽히게 되는등 여러가지의 문제점을 안고 있었다.First, the plate-shaped material (a) (stainless steel material) having a predetermined width and thickness is prepared to be intermittently and continuously transferred by a predetermined length by a transfer device constructed of a transfer roller and a servomotor, and the lifting of a previously prepared mold is performed. The primary cutting molding process for forming both ends of the material (a) while the operation is performed in parallel, punching for forming the process support hole (b) and partial cutting operation for giving a certain width to the material (a) Secondary molding cutting process, the sequential bending process (1-3rd) for forming the elastic portion (C) on both sides, and the last cutting processing including the pallet supporting operation proceeds sequentially, one with a certain shape As the support springs are manufactured continuously, a considerable amount of material removal (P) is generated during the final processing of one support spring during the final cutting process. Inevitably, it caused unnecessary material loss, and this material loss not only increased the manufacturing cost of the product, but also was undesirable in terms of economics. As a result of this, there were many concerns that the deformation of the cut surface or the peripheral part of the finished product was brought, as well as the removal of the material scattered in all directions, and the work environment was disturbed.

본 발명은 이와 같은 문제점을 감안하여 이를 해소하고자 안출된 것인바, 연속적으로 이루어지는 제조공정 과정을 개선하여 중앙부위에서 소재제거분이 발생되지 않는 상태로서 일정형태를 갖는 하나의 서포트스프링이 연속적으로 완성가공되도록 함으로서, 소재의 손실율이 최소화되도록 하면서 제작단가를 절감하고자 하는데 첫째 목적이 있고, 최후의 절단공정시 발생되는 전단응력이 최소화되도록 하면서 완성품의 불량률을 최소화하고자 하는데 둘째 목적이 있는 것으로 그 공정과정을 첨부도면 제1도, 제2a도 및 제3도에 의거하여 상세히 설명하면 다음과 같다.The present invention was devised to solve this problem in order to solve this problem, so that one support spring having a certain shape as a state in which material removal is not generated at the central part by improving the manufacturing process process made continuously is processed continuously. The first purpose is to reduce manufacturing cost while minimizing the loss rate of the material, and the second purpose is to minimize the defective rate of the finished product while minimizing the shear stress generated during the last cutting process. Referring to Figures 1, 2a and 3 will be described in detail as follows.

본 발명은 제1도에 도시된 바와 같이, 서보모터(도시되지 않음)에 의해 간헐적으로 구동되는 상, 하로울러(1, 2)와 제작대상의 서포트스프링(10) 가공형태에 따라 제작된 상, 하부금형(3, 4)이 조하구성되어 이루어진 제조장치(100)를 구축하여 일련의 연속공정 과정이 진행되도록 하되, 요구되는 텐션력과 가공형태에 따라 선택된 판상의 소재(A)를 상, 하로울러(1, 2) 사이에 끼워 넣어 일정길이만큼씩 간헐적으로 연속이송되면서 상, 하부금형(3, 4) 사이를 통과하도록 한 상태에서 상, 하부금형(3, 4)를 소재이송시점과 일치되는 상태로 승강작동되도록 하면서 부여하고자 하는 서포트스프링(10)의 형태가 순차적으로 형성되도록 하게 되는바, 제1공정은 소재(A)가 상, 하부금형(3, 4) 사이로 1단계 진입된 상태에서 각각의 펀치(31, 32, 33)에 의한 펀칭공정과 성형절단공정을 동시에 행하여 지지면(11)에 고정지지공(12) 및 요홈공(13)을 각각 형성해줌과 동시에 지지면(11) 양측의 탄력부(14)가 갖는 외형을 성형해주는 공정이다.As shown in FIG. 1, the present invention is an image intermittently driven by a servomotor (not shown), and an image produced according to a processing form of the rollers 1 and 2 and the support spring 10 to be manufactured. To build a manufacturing apparatus 100 consisting of the lower molds (3, 4) is configured to be a series of continuous process proceeds, but according to the required tension force and processing type, the plate material (A) selected, Insert the upper and lower molds (3, 4) between the upper and lower molds (3, 4) while intermittently and continuously moving by a predetermined length by inserting them between the rollers (1, 2). The shape of the support spring 10 to be given while being allowed to move up and down in a consistent state is to be formed sequentially, in the first process, the material A enters one step between the upper and lower molds 3 and 4. Punching process and forming section by each punch 31, 32, 33 in the state A step that the fixing supporting hole 12 and the yaw homgong 13 to the support surface by performing the process at the same time (11) and each forming at the same time haejum forming an outer shape having a support surface (11) resilient portion 14 of each side.

제2공정은 상기 제1공정이 진행된 상태의 소재(A)가 상, 하부로울러(1, 2)에 의해 상, 하부금형(3, 4) 사이에서 2단계 위치로 이송되면, 상기 제1공정에서 형성된 지지면(11)상의 고정지지공(12)에 파일롯핀(Pilot Pin)(16)이 삽입되면서 소재(A)의 위치를 정확하게 설정해주는 공지의 파일롯 지지공정인바, 이때는 상, 하부금형(3, 4)내의 1단계 이송위치에 내입된 상태인 미가공소재(A)에의 제1공정과정이 병행되게 되면서 지지면(11)을 중심으로 한 양측의 탄력부(14) 외형이 완성가공되게 된다.In the second process, when the material A in the state where the first process is performed is transferred to the two-stage position between the upper and lower molds 3 and 4 by the upper and lower rollers 1 and 2, the first process is performed. It is a well known pilot support process for accurately setting the position of the material (A) while the pilot pin (16) is inserted into the fixed support hole (12) on the support surface (11) formed in the upper and lower molds ( 3, 4) the first process to the raw material (A) in the state of being inserted into the first stage transfer position in parallel, and the appearance of the elastic portion 14 on both sides around the support surface 11 is completed. .

제3공정 내지 제5공정 과정은 상기 제1, 2공정이 완료된 상태인 소재(A) 양측의 탄력부(14)를 1 내지 3단계로서 절곡성형하여 적정경사각을 갖도록 함으로서 일정 텐션력을 부여하는 공지공정 과정인바, 이러한 공정과정에 있어서는 제작하고자 하는 서포트스프링(10)의 탄력부(14) 형태에 따라 1단에서 3단 형태 또는 그 이상단계의 형태로서 선택적 절곡성형이 가능하며 필요에 따라서 텐션력 증대효과를 얻기 위한 요홈부(17) 형성공정을 병행할 수 있다.In the third to fifth processes, the elastic parts 14 on both sides of the material A in which the first and second processes are completed may be bent in one to three steps to provide a constant tension force by having a proper inclination angle. In this process process, depending on the shape of the elastic portion 14 of the support spring 10 to be manufactured, selective bending molding is possible in the form of one to three stages or more stages, and tension as necessary. The groove portion 17 may be formed in parallel to obtain a force increasing effect.

제6공정은 상기 과정으로 일정형태의 탄력부(14)가 형성된 소재(A)의 고정지지공(12)에 파일롯핀(16')이 삽입되면서 소재(A)의 위치를 재차 정확하게 설정해주는 공지의 파일롯 지지공정인바, 이 공정과 제2공정은 소재의 가공위치를 정확하게 설정해줌으로서 소재(A)의 위치변동으로 인한 불량품 양산을 방지해주는 기능을 갖는다.The sixth process is known to set the position of the material (A) again accurately while the pilot pin (16 ') is inserted into the fixed support hole 12 of the material (A) in which the elastic portion 14 of the predetermined shape is formed in the above process This is a pilot supporting process of, this process and the second process has the function to prevent the mass production of defective products due to the positional change of the material (A) by accurately setting the processing position of the material.

제7공정은 상기 제1-6공정 과정이 완료된 상태의 소재(A)가 계속적으로 이송되어 절단다이(18) 위에 위치됨과 동시에 상부금형(3)상의 절단날(19)이 하강하여 소재중앙에 형성된 요홈공(13)을 중심으로 선절단해줌으로서 일정형태를 갖는 하나의 서포트스프링(10)을 완성가공하는 최후공정인바, 이때의 절단공정은 소재(A)의 요홈공(13)을 중심으로 한 단순절단작업임에 따라 소재제거분의 발생이 전혀 없는 효과를 얻게 되며 최초의 서포트스프링(10)이 완성가공된 후에는 상부 또는 하부금형의 1회 승강작동시마다 하나의 서포트스프링이 연속적으로 완성가공하게 되는바, 이러한 일련의 연속공정과정에 의해 일정형태로 제작되는 순서가 제3도에 잘 나타나 있다.In the seventh process, the material A in the state in which the first to sixth process is completed is continuously transferred and positioned on the cutting die 18, and the cutting blade 19 on the upper mold 3 descends to the center of the material. It is the last process of finishing one support spring 10 having a certain shape by cutting the grooves 13 formed around the bar, and the cutting process is based on the grooves 13 of the material A. As it is a simple cutting operation, there is no effect of removing material, and after the first support spring 10 is completed, one support spring is continuously completed for each lifting operation of the upper or lower mold. As shown in FIG. 3, the order of manufacturing a certain form by such a series of continuous processes is shown.

미설명부호로서 21은 절단다이(18)에 가해지는 충격을 완화시켜 주기 위한 스프링을, 22은 완성품이 담겨지는 통체를 각각 나타낸 것이며, 23은 탄력부를 절곡형성하게 되는 성형부를 나타낸 것이다.As the reference numeral 21, 21 denotes a spring for mitigating the impact on the cutting die 18, 22 denotes a cylinder in which the finished product is contained, and 23 denotes a molded portion that is to bend the elastic portion.

이상에서 상술한 바와 같은 본 발명은 종래의 방법으로 서포트스프링을 제작함에 따라 야기되고 있던 문제점을 효과적으로 해소시킨 것인바, 제작공정과정을 개선하여 최후 절단공정에서 소재잔여분이 발생되는 일이 없도록 함으로서 제작단가를 대폭 절감하여 그 경제성을 향상시켰음은 물론 절단시 소재에 가해주는 전단응력을 최소화하면서 변형의 소지를 배제하여 불량을 감소효과가 수반되도록 한 우수한 발명인 것이다.As described above, the present invention effectively solves the problems caused by manufacturing the support spring by the conventional method, and improves the manufacturing process so that no material residue is generated in the final cutting process. It is an excellent invention that reduced the unit cost and improved the economics as well as minimizing the shear stress applied to the material while cutting, thereby eliminating the defects and accompanying the effect of reducing defects.

Claims (1)

서보모터에 의해 간헐적으로 구동되는 상, 하로울러와 제작대상의 서포트스프링 가공형태에 따라 제작된 상, 하부금형이 조합구성되어 이루어진 제조장치를 구축하여 일련의 연속공정 과정이 진행되도록 하되, 요구되는 텐션력과 가공형태에 따라 선택된 핀상의 소재(A)가 상, 하로울러에 의해 일정길이만큼씩 간헐적으로 연속이동되면서 상, 하부금형 사이를 통과하도록 한 상태에서 상, 하부금형(3, 4)을 소재이송시점과 일치되는 상태로 승강작동하도록 하면서 부여하고자 하는 서포트스프링(10)의 형태가 순차적으로 형성되도록 한 서포트스프링 제조방법에 있어서, 소재(A)가 상, 하부금형 사이로 1단계 진입된 상태에서 각각의 펀치(31, 32, 33)에 의한 펀칭공정과 성형절단공정을 동시에 행하여 지지면(11)에 고정지지공(12) 및 요홈공(13)을 각각 형성해줌과 동시에 지지면(11) 양측의 탄력부(14)가 갖는 외형을 형성해주는 공정과정과, 상기 공정이 진행된 상태의 소재(A)가 상, 하부금형 사이에서 2단계 위치로 이송되면, 지지면(11)상의 고정지지공(12)에 파일롯핀(Pilot Pin)(16)이 삽입되면서 소재(A)의 위치를 정확하게 설정해주는 공지의 파일롯 지지공정과, 상기 제1, 2공정이 완료된 상태인 소재(A)양측의 탄력부(14)를 1 내지 3단계로서 절곡성형하여 적정경사각을 갖도록 함으로서 일정 텐션력을 부여하는 공지의 절곡공정과, 상기 과정으로 일정형태의 탄력부(14)가 형성된 소재(A)의 고정지지공(12)에 파일롯핀(16')이 삽입되면서 소재(A)의 위치를 재차 정확하게 설정해주는 공지의 파일롯 지지공정과, 상기 공정과정이 완료된 상태의 소재(A)가 계속적으로 이송되어 절단다이(18)위에 위치됨과 동시에 상부금형(3)상의 절단날(19)이 하강하여 소재중앙에 형성된 요홈공(13)을 중심으로 선절단하여 소재제거분의 발생이 전혀 없는 최후의 절단 공장과정이 순차적으로 반복되면서 일정형태를 갖는 하나의 서포트스프링(10)이 연속적으로 완성가공하도록 된 것을 특징으로 하는 비데오테이프 카세트의 서포트스프링 제조방법.A series of continuous process processes are required by constructing a manufacturing apparatus consisting of a combination of upper and lower molds intermittently driven by a servo motor and upper and lower molds manufactured according to the support spring machining type of the manufacturing target. The upper and lower molds (3, 4) with the pin-shaped material (A) selected according to the tension force and processing type to pass between the upper and lower molds while intermittently moving by a certain length by the upper and lower rollers (3, 4). In the support spring manufacturing method in which the shape of the support spring 10 to be provided is sequentially formed while allowing the lifting and lowering operation to coincide with the material transfer time, the material A enters one step between the upper and lower molds. In the state, the punching process and the molding cutting process by each punch 31, 32, 33 are performed simultaneously, and the fixed support hole 12 and the recessed hole 13 are formed in the support surface 11, respectively. And at the same time the process of forming the appearance of the elastic portion 14 on both sides of the support surface 11, and if the material (A) in the state in which the process is advanced to the second stage position between the upper and lower molds, the support surface (11) a known pilot support process for accurately setting the position of the work piece A while the pilot pin 16 is inserted into the fixed support hole 12 on the first and second steps. Known bending process of imparting a certain tension force by bending molding the elastic portion 14 on both sides of the material (A) in one to three steps to have a proper inclination angle, and the elastic portion 14 having a predetermined shape is formed by the above process. The known pilot support process for accurately setting the position of the work material A while the pilot pin 16 'is inserted into the fixed support hole 12 of the work material A, and the work material in the state where the process is completed. Is continuously transported and positioned above the cutting die 18 and at the same time the upper mold 3 Cutting edge 19 is lowered to the center of the groove 13 formed in the center of the material to be cut at the center of the last cutting plant process without the occurrence of material removal at all repeats one by one support The support spring manufacturing method of the video tape cassette, characterized in that the spring (10) is continuously finished processing.
KR1019900014292A 1990-09-11 1990-09-11 The making method for support spring KR920007387B1 (en)

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