KR890000320Y1 - Cushion system of oil pressure dies with 2 step changing capacity in a closed circuit - Google Patents
Cushion system of oil pressure dies with 2 step changing capacity in a closed circuit Download PDFInfo
- Publication number
- KR890000320Y1 KR890000320Y1 KR2019840007221U KR840007221U KR890000320Y1 KR 890000320 Y1 KR890000320 Y1 KR 890000320Y1 KR 2019840007221 U KR2019840007221 U KR 2019840007221U KR 840007221 U KR840007221 U KR 840007221U KR 890000320 Y1 KR890000320 Y1 KR 890000320Y1
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- South Korea
- Prior art keywords
- piston
- closed circuit
- valve
- oil pressure
- cushion
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Classifications
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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
- B21D24/00—Special deep-drawing arrangements in, or in connection with, presses
- B21D24/02—Die-cushions
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Presses And Accessory Devices Thereof (AREA)
Abstract
내용 없음.No content.
Description
제1도는 본 고안의 사시도.1 is a perspective view of the present invention.
제2도는 본 고안을 프레스 기계에 부착한 측면도.2 is a side view of the present invention attached to the press machine.
제3도는 본 고안 단면도.3 is a cross-sectional view of the present invention.
본 고안은 프레스 기계에 부착하여 적용하는 기계로 특수한 형태의 제품드로잉 작업시 금형의 스트로크에 따라 쿠숀압이 변환되어야 하므로 본 고안에서는 다이쿠숀의 압을 금형의 스트로크에 따라 쿠숀압을 순차적으로 변환시켜 정밀한 제품을 얻게한 폐회로식 2단 가변 용량유압다이 쿠숀장치에 관한 것이다.The present invention is a machine that is attached to the press machine and applied, so the cushion pressure must be converted according to the stroke of the mold when drawing a special type of product. In this invention, the pressure of the die cushion is changed sequentially according to the stroke of the mold. A closed-loop two-stage variable displacement hydraulic die cushioning device that yields precision products.
종래에는 1개의 배출조정밸브로 기름 배출량을 조정하도록 되어있었기 때문에 다이쿠숀의 동작시 스트로크의 초기와 마지막까지 쿠숀압이 일정하였으므로 2단으로 압을 필요로 하는 금형에서는 사용하지 못하거나 혹은 사용하더라도 정밀한 형태, 불규칙한 형상의 드로오잉제품을 성형할 수가 없었던 것이다.Conventionally, the oil discharge is controlled by one discharge control valve, so the cushion pressure is constant until the beginning and the end of the stroke during the operation of the die cushion. It was not possible to form a drawing product of a shape and an irregular shape.
본 고안은 상기한 바와같은 문제점을 시정하고자 제안된 폐회로식 다이쿠숀으로서 각기 다른 구조의 배출밸브2개를 사용하여 스트로크의 높이에 따라 2단으로 쿠숀용량을 조정할 수 있기 때문에 상광하협형태로 되는 드로오잉관체 제품이나 다른 불규칙한 형태의 판금물도 정밀하게 성형할수 있게하며 2단압 발생위치는 밸브동작에 의해 손쉽게 조정할 수 있고 쿠숀압을 스트로크 구간동안 균일한 압을 발생시켜야 할 경우 2개의 밸브중 1개를 전기나 기계작동으로 닫으면 되는 것이다.The present invention is a closed-loop die cushion that is proposed to correct the above problems, and it is possible to adjust the cushion capacity in two stages according to the height of the stroke by using two discharge valves of different structures. It is possible to precisely mold owing pipe products or other irregularly shaped sheet metals.The two-stage pressure generating position can be easily adjusted by valve operation, and one of two valves should be It can be closed by electricity or mechanical operation.
본 고안은 유압폐회로 방식의2단가변 용량 다이쿠숀장치로서 첨부된 예시도면에 의해 상세히 설명하면 다음과 같다. 즉 외통체(1)의 내부에 냉각수관(2)을 수장하고 그 내측에 실린더(3)를 외통체(1)와 일체로 가공하되 하부에는흡입체크밸브(4)를, 상부에는 도그(a')를 설한 쿠숀바(a)를 직립시킨 피스톤(5)를 내장하되 피스톤(5)과 흡입밸브(4)사이에는 탄발스프링(6)을 수납시켜 피스톤(5)을 내장하되 피스톤(5)과흡입밸브(4)사이에는 탄발스프링(6)을 수납시켜 피스톤(5)을 탄지케하며 상면에는 플랜지(7)를 볼트(8)에 의해 체결밀봉시켜며 하부몸체(1')의 하단부에는 오일배출밸브(R1)(R2)를 부착시켜 되는 폐회로식 2단가변용량 유압다이쿠숀장치인 것이다.The present invention is described in detail by the accompanying drawings as a two-stage variable capacitance die cushion device of the hydraulic closed circuit method as follows. That is, the coolant pipe 2 is housed inside the outer cylinder 1, and the cylinder 3 is integrally machined with the outer cylinder 1 on the inside thereof, but the suction check valve 4 is disposed at the lower part and the dog (a) at the upper part. A piston 5 having an upright cushioned bar (a) installed therein; a piston (6) is built in between the piston (5) and the intake valve (4) to accommodate the piston (5). Between the over suction valve (4) is housed in the ballistic spring (6) to hold the piston (5), the upper surface is fastened and sealed by the flange (7) by the bolt (8) and on the lower end of the lower body (1 ') It is a closed-loop two-stage variable capacity hydraulic die cushion device to which an oil discharge valve (R 1 ) (R 2 ) is attached.
미설부호 9는 슬라이드램 이다.Miss 9 is the slide ram.
본 고안의 작동상태를 설명하면 도면 제2도에서와 같이 피스톤(5)의 하강은 슬라이드램(9)이 하강하는 힘을 이용해 강제로 주르며 탄발스프링(6)에 의해 원상복귀되는것이다. 오일 배출밸브(R1)(R2)를 필요압 만큼 세팅시키고 슬라이드램(9)에 의해 피스톤(5)이 하강하면 내부 유압힘에 의해 필요압 만큼 세팅된 오일배출밸브(R1)가 열리면서 스토로크(S1)구간동안 1차 쿠숀용량으로 금형성형품이 드로오잉되고 도면제3도의 S1을 지나는 순간 하측 리미트스위치(L/S2)가 쿠숀바(a)의 상부에 설한 도그에 의해 밀리면 하측 리미트스위치(L/S2)의 동작신호를 받아 오일 배출밸브(R2)의 전자변이 열리고 타측의 오일배출밸브(R1)의 압보다 낮게 셋팅된 오일배출밸브(R2)가 열림과 동시에 다른 오일배출밸브(R1)는 닫히면서 2차쿠숀용량으로 S2스트로크동안 성형품을 마루리시켜 드로오잉하는 것이다.Referring to the operating state of the present invention, as shown in Figure 2, the lowering of the piston (5) is forcibly squeezed by the force of the slide ram (9) is to be restored to the original by the ball spring (6). When the oil discharge valve (R 1 ) (R 2 ) is set to the required pressure and the piston (5) is lowered by the slide ram (9), the oil discharge valve (R 1 ) set by the required pressure by the internal hydraulic force opens. When the mold molded product is drawn at the first cushion capacity during the stroke (S 1 ) section and passes through S 1 in FIG. 3, the lower limit switch (L / S 2 ) is placed by the dog installed on the upper portion of the cushion bar (a). pushed the lower limit switch (L / S 2) has a lower set than a pressure oil drain valve (R 2) of the operation receiving a signal opens the solenoid valve of the oil discharge valve (R 2) of the other side oil discharge valve (R 1) opening of the At the same time, the other oil drain valve (R 1 ) is closed and draws the molded part during the S 2 stroke with the secondary cushion capacity.
S1,S2쿠숀 1,2스토로크가 완전히 행하여지면 슬라이드램(9)은 상승하고 피스통(5)은 스프링(6)에 의해 상승하면서(이때 R2전자변은 닫힌다) 실린더 내부는 진공력이 생기고 이 진공력에 의해 흡입체크밸브(4)가 열려 외통체(1)와 실린더(3)사이에 있는 오일을 흡입시켜 주는 것이다.When the S 1 and S 2 cushions 1 and 2 stroke are completely performed, the slide ram 9 is raised and the piece cylinder 5 is lifted by the spring 6 (at which the R 2 electromagnetic valve is closed). This causes the suction check valve 4 to open and suck the oil between the outer cylinder 1 and the cylinder 3 by this vacuum force.
다시 슬라이드램(9)이 하강하면 흡입체크 밸브(4)는 닫히고 전술한 것과 같이 반복운동을 계속하는 것이다.When the slide ram 9 descends again, the suction check valve 4 closes and continues the repetitive movement as described above.
본 고안은 유압을 이용하여 비교적 적은 크기의 실린더로 대용량의 힘을 얻을 수 있고 특히 S1구간동안 오일배출밸브(R1)에 세팅된 쿠숀용량으로 성형품을 드로오잉하고 S2구간동안에는 오일배출밸브(R1)의 압보다 낮게 세팅된 오일배출밸브(R2)압 쿠숀용량으로 제품으로 성형하는2단 가변쿠숀용량 다이쿠숀인 것이다.The present invention can obtain a large amount of force with a relatively small cylinder by using hydraulic pressure, and in particular, the molded product is drawn with the cushion capacity set in the oil discharge valve (R 1 ) during the S 1 section, and the oil discharge valve during the S 2 section. It is a two-stage variable cushion capacity die cushion that is molded into a product with an oil discharge valve (R 2 ) pressure cushion capacity set lower than the pressure of (R 1 ).
또한 본 고안은 폐회로 방식으로 별도 기름공급이나 배출이 없이 외통체(1) 내부에 저장되었다가 다시 흡입되도록 고안되었고 작동중에 발생한 열은 냉각수관(2)에 의해 냉각되어지는 것이다.In addition, the present invention is designed to be sucked again and stored inside the outer cylinder (1) without a separate oil supply or discharge in a closed loop method and the heat generated during operation is cooled by the cooling water pipe (2).
이와같은 본 고안은 프레스 부대장치의 모델확대와 기계식 프레스에서도 비교적 불규칙한 형태의 판금물도 드로오잉할 수 있고 정밀한 성형품을 만들수 있는 효과를 제공하는 것이다.The present invention is to expand the model of the press auxiliary device and even mechanical press can draw a relatively irregular sheet metal sheet and provide the effect of making a precise molded product.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019840007221U KR890000320Y1 (en) | 1984-07-26 | 1984-07-26 | Cushion system of oil pressure dies with 2 step changing capacity in a closed circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019840007221U KR890000320Y1 (en) | 1984-07-26 | 1984-07-26 | Cushion system of oil pressure dies with 2 step changing capacity in a closed circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR860001419U KR860001419U (en) | 1986-02-28 |
| KR890000320Y1 true KR890000320Y1 (en) | 1989-03-09 |
Family
ID=19236240
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019840007221U KR890000320Y1 (en) | 1984-07-26 | 1984-07-26 | Cushion system of oil pressure dies with 2 step changing capacity in a closed circuit |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR890000320Y1 (en) |
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1984
- 1984-07-26 KR KR2019840007221U patent/KR890000320Y1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| KR860001419U (en) | 1986-02-28 |
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