KR930007990Y1 - Relief valve for preventing press to over load - Google Patents

Relief valve for preventing press to over load Download PDF

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Publication number
KR930007990Y1
KR930007990Y1 KR2019910018370U KR910018370U KR930007990Y1 KR 930007990 Y1 KR930007990 Y1 KR 930007990Y1 KR 2019910018370 U KR2019910018370 U KR 2019910018370U KR 910018370 U KR910018370 U KR 910018370U KR 930007990 Y1 KR930007990 Y1 KR 930007990Y1
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KR
South Korea
Prior art keywords
oil
piston
cylinder
relief valve
press
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Application number
KR2019910018370U
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Korean (ko)
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KR930008439U (en
Inventor
최석장
Original Assignee
주식회사 기아기공
정문창
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Priority to KR2019910018370U priority Critical patent/KR930007990Y1/en
Publication of KR930008439U publication Critical patent/KR930008439U/en
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Publication of KR930007990Y1 publication Critical patent/KR930007990Y1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/28—Arrangements for preventing distortion of, or damage to, presses or parts thereof
    • B30B15/281—Arrangements for preventing distortion of, or damage to, presses or parts thereof overload limiting devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
    • F16K17/0413—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded in the form of closure plates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/36—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position
    • F16K17/366—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position the closure member being a movable ball

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Safety Valves (AREA)

Abstract

내용 없음.No content.

Description

프레스의 과부하 방지용 릴리프 밸브Relief valve for overload protection of press

제 1 도는 본 고안을 보인 종단면도.1 is a longitudinal sectional view showing the present invention.

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

1 : 릴리프밸브 2 : 실린더1: relief valve 2: cylinder

3 : 실리더덮개판 4 : 에어홀3: cylinder cover plate 4: air hole

5 : 스프링고정핀 6 : 스프링5: Spring Fixing Pin 6: Spring

7 : 스위치로드 8 : 리미트스위치7: switch rod 8: limit switch

10 : 피스톤 11 : 피스톤로드10: piston 11: piston rod

12 : 작동부 13 : 실린더하부덮개12: operating part 13: cylinder lower cover

14 : 오일유입구 15 : 볼14: oil inlet 15: ball

본 고안은 프레스의 과부하방지용 릴리프밸브에 관한 것으로, 특히 슬라이드에 과부하가 걸릴때 슬라이드를 정지시켜 프레스를 보호함과 동시에 오일의 보충시간을 단축하고 에어 탱크의 용적을 줄일수 있도록 하는 프레스의 과부하방지용 릴리프밸브에 관한 것이다.The present invention relates to a relief valve for preventing an overload of a press, in particular, to protect the press by stopping the slide when the slide is overloaded, at the same time to shorten the oil replenishment time and reduce the volume of the air tank. It relates to a relief valve.

종래의 릴리프밸브는 실용신안등록출원 제89-18096호와 같이 피스톤이 하강하면서 에어를 밀어내고 에어로 피스톤을 밀어올려 오일을 보출할 수 있도록 함으로써 에어압이 피스톤을 밀어올릴 수 있을만큼 높아야 함은 물론 이에 따라 실린더내에서 배출되는 에어를 저장하기 위한 탱크의 용적도 커져야 하는 결점이 있었다.Conventional relief valves, as in Utility Model Registration Application No. 89-18096, allow the air pressure to be high enough to push the pistons by pushing the air down and pushing the pistons into the air to push oil as the piston descends. Accordingly, there is a drawback that the volume of the tank for storing the air discharged from the cylinder must also be increased.

또한, 오일의 순환부위에 스프링을 설치하여 스프링의 상,하유격으로 오일을 순환시켜야 할 뿐만 아니라, 리미트스위치용도트거 피스톤과 함께 상,하로 이동되어야 하는 것이므로 구조가 복잡해지고 스프링의 정기적인 검사가 필요해지는 결점이 있었다.In addition, by installing the spring in the oil circulation part, the oil must be circulated with the up and down clearance of the spring, and it must be moved up and down together with the limiter douger piston. There was a flaw that was needed.

따라서, 본 고안의 목적은 릴리프밸브의 구조를 간단히 하면서 피스톤이 상승되면서 에어를 배출하고 하강하면서 오일을 보출할 수 있도록 함으로써 오일의 보충시간은 단축시키고 에어탱크와 실린더의 용적을 줄일수 있도록 한 프레스의 과부하방지용 릴리프밸브를 제공함에 있다.Therefore, the object of the present invention is to simplify the relief valve structure and to discharge the air as the piston rises and to discharge the oil as the piston rises, thereby reducing the oil replenishment time and reducing the volume of the air tank and cylinder. To provide an overload relief valve.

이하, 본 고안은 참부도면에 의하여 상세히 설명하면 다음과 같다.Hereinafter, the present invention will be described in detail by the true drawing.

실린더(2) 상부에 볼트 결합되는 실린더 덮개판(3)에 에어홀(4)를 형성하고, 실린더내를 승강하는 피스톤 (10)을 구비한 릴리프밸브(1)에 있어서, 피스톤(10)의 중앙에 작동부(12)를 돌출 구성하고 실린더 덮개판(3)에는 리미트 스위치(8)를 동작시키는 스위치로드(7)가 스프링(6)에 탄지되도록 로드고정판(7a)과 스프링고정판(5)으로 설치하였다. 그리고 실린더하부덮개(13)에는 과부하시 오일이 유입되어 피스톤(10)을 상승시키는 오일유입구(14)와 오일보충시 역류하는 오일을 저지하는 볼(15)이 구비되고, 피스톤 상승시 오일유입구(14)와 연통되어 오일유입구로 유입되는 과부하 오일을 배출하는 배출구(17)가 구성되어 있고, 상기 오일유입구의 상단에는 오일탱트의 오일을 오일 유입구 측으로 보충시키는 오일순환구(16)가 구성되어있다.In the relief valve 1 provided with the piston 10 which forms the air hole 4 in the cylinder cover plate 3 bolted to the upper part of the cylinder 2, and raises and lowers the inside of the cylinder, The rod fixing plate 7a and the spring fixing plate 5 are formed so that the switch rod 7 for protruding the operating part 12 in the center and the cylinder cover plate 3 operates the limit switch 8 on the spring 6 is supported. Installed as. And the cylinder lower cover 13 is provided with an oil inlet 14 for oil to flow in the overload to raise the piston 10 and a ball 15 to block the oil flowing back when the oil is filled, the oil inlet ( 14) is configured to communicate with the discharge port 17 for discharging the overload oil flowing into the oil inlet, the upper end of the oil inlet is configured with an oil circulation port 16 for replenishing the oil in the oil tank to the oil inlet side. .

미설명부호; 11은 피스톤로드이다.Unexplained code; 11 is the piston rod.

이와같이 구성된 본 고안은 프레스의 슬라이드에서 과부하가 걸리면 실린더하부덮개(13)의 오일유입구(14)로 오일이 들어와 피스톤 로드(11)를 밀어올려 피스톤로드(11)의 하단에 배출구(17) 상부에 위치하게 되면 오일이 배출구(17)로 배출되도록 함과 동시에 피스톤(10)이 실린더(2)내에 충전된 에어를 에어홀(4)을 통해 배출 시킨다.When the overload is applied to the slide of the press, the present invention is constructed so that oil enters the oil inlet 14 of the lower cover 13 of the cylinder and pushes up the piston rod 11 to the upper portion of the outlet 17 at the lower end of the piston rod 11. When positioned, the oil is discharged to the outlet 17 and at the same time, the piston 10 discharges the air filled in the cylinder 2 through the air hole 4.

이때, 피스톤(10)의 중앙에 설치된 작동부(12)는 실린더 덮개판(3)에 설치된 스프링고정판(5)을 가압하여 스프링(6)을 압축시키면서 스위치로드(7)를 상승시켜 리미트스위치(8)를 작동시킴으로써 슬라이드가 정지되면서 프레스가 보호되는 것이다.At this time, the operating unit 12 installed in the center of the piston 10 presses the spring fixing plate 5 installed on the cylinder cover plate 3 to raise the switch rod 7 while compressing the spring 6 to limit the switch ( 8), the slide is stopped and the press is protected.

한편, 오일을 보출할때는 에어홀(4)을 통해 압축공기를 주입하면 실린더(2)내에 에어가 충진됨과 동시에 피스톤(10)은 자체의 중량과 에어압에 의해 하강하게 되고, 이에 오일탱크(미도시)의 오일을 펌핑하여 오일순환구(16)를 통해 보출시키는 것이다.On the other hand, when the oil is discharged, when compressed air is injected through the air hole 4, the air is filled in the cylinder 2 and at the same time the piston 10 is lowered by its own weight and air pressure. At the time of pumping the oil is to send through the oil circulation port (16).

또한, 피스톤(10)이 하강할때 상기 펌핑에 의해 보충되는 오일에 의해 실린더하부덮개(13)의 오일유입구(14)에 압력이 발생하면 오일 유입구(14)에 설치된 볼(15)이 상부로의 오일역류를 방지하는 밸브작용을 하면서 피스톤로드(11)의 상승을 조성하는 것이다.In addition, when pressure is generated at the oil inlet 14 of the cylinder lower cover 13 by the oil supplemented by the pumping when the piston 10 is lowered, the ball 15 installed in the oil inlet 14 moves upward. While acting as a valve to prevent oil backflow of the piston rod 11 is to create a rise.

상기에서와 같이 본 고안은 피스톤이 상승하면서 실린더에 충전된 에어를 배출시키고 피스톤의 자체중량과 에어압에 의해 피스톤이 하강되는 과정중에 오일이 보충되도록 함으로써 에어탱크와 실린더의 용적을 줄일수 있을 뿐만 아니라. 실린더 하부덮개에 구비된 볼로 피스톤 로드의 하강압을 조정함으로써 릴리프밸브의 구조를 간단히 할수 있는 효과가 제공되는 것이다.As described above, the present invention not only reduces the volume of the air tank and the cylinder by discharging the air charged in the cylinder while the piston is raised, and by replenishing oil during the piston descending process by the piston's own weight and air pressure. not. By adjusting the lowering pressure of the piston rod with the ball provided in the cylinder lower cover is provided an effect that can simplify the structure of the relief valve.

Claims (1)

에어홀(4)을 갖춘 상부 덮개판(3)이 볼트 결합된 실린더와, 실린더내를 승강하며 실린더내의 에어를 에어홀을 통해 배출하는 피스톤(10)을 구비한 프레스의 과부하방지용 릴리프밸브에 있어서, 상기 상부 덮개판상에 리미트스위치(8)를 동작시키는 스위치로드(7)를 로드고정판(7a)및 스프링 고정판(5)으로 스프링(6) 탄지시키고, 피스톤 중앙에 상승시 상기 스위치로드를 가압하는 작동부(12)를 구비하며, 실린더 하부에 피스톤 하강시 오일보충을 이루는 공지의 오일순환구(16)와, 피스톤 상승시 오일을 배출하는 공지의 배출구(17)를 구비하고, 실린더 하단에 결합되어 내부에 오일순환구와 연통되는 오일유입구(14)를 구비하되 오일유입구상에 피스톤 하강시 오일역류를 방지하는 볼(15)를 구비함을 특징으로 하는 프레스의 과부하방지용 릴리프 밸브.In the overload relief valve of the press provided with the cylinder which the upper cover plate (3) which has the air hole (4) is bolted, and the piston (10) which raises and lowers the inside of a cylinder through an air hole, And holding the switch rod 7 for operating the limit switch 8 on the upper cover plate with the rod fixing plate 7a and the spring fixing plate 5 to spring 6 and pressurizing the switch rod when the piston is lifted to the center of the piston. It is provided with an operating part 12, and has a well-known oil circulation port 16 to form an oil supplement when the piston lowers, and a known outlet 17 for discharging oil when the piston is raised, the lower end of the cylinder is coupled to the lower end of the cylinder Relief valve for preventing the overload of the press, characterized in that it has an oil inlet (14) in communication with the oil circulation port therein, the ball on the oil inlet to prevent oil backflow when the piston descends.
KR2019910018370U 1991-10-31 1991-10-31 Relief valve for preventing press to over load KR930007990Y1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2019910018370U KR930007990Y1 (en) 1991-10-31 1991-10-31 Relief valve for preventing press to over load

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2019910018370U KR930007990Y1 (en) 1991-10-31 1991-10-31 Relief valve for preventing press to over load

Publications (2)

Publication Number Publication Date
KR930008439U KR930008439U (en) 1993-05-24
KR930007990Y1 true KR930007990Y1 (en) 1993-11-30

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR2019910018370U KR930007990Y1 (en) 1991-10-31 1991-10-31 Relief valve for preventing press to over load

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Publication number Publication date
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