KR20020093199A

KR20020093199A - 2-step speed control cylinder

Info

Publication number: KR20020093199A
Application number: KR1020010031637A
Authority: KR
Inventors: 장태석
Original assignee: 대광공업 주식회사
Priority date: 2001-06-07
Filing date: 2001-06-07
Publication date: 2002-12-16

Abstract

PURPOSE: A two-speed control cylinder is provided to make the best use of installation space by simplifying the structure without installing an additional two-speed control valve, and to cut down manufacturing cost by producing the cylinder easily. CONSTITUTION: A piston is combined with a piston rod(10), and reciprocated in a cylinder(1). An intake port(4) and a discharge port(5) are formed at both sides of the cylinder. The piston is divided into a large diameter part(2) and a small diameter part(3) to form the two-stage piston. The small diameter part is inserted to a constant speed range(7), and the constant speed range is formed in the discharge port. Passages(9,9') are formed in upper and lower parts of the constant speed range, and connected to the discharge port. An adjusting screw(6) is installed in the upper passage, and a check valve(8) is mounted in the lower passage. The installation space is used optimally with simple structure of the two-speed control cylinder.

Description

2-step speed control cylinder

본 발명은 산업기기나 공작기계 등의 2단 속도제어시 사용되는 2단 속도조절 실린더에 관한 것으로, 특히 실린더 외부에 속도제어용 밸브를 추가로 설치하지 않고 실린더자체만으로 2단 속도제어가 가능케 하므로서, 실린더의 가격을 저렴화하고, 공간의 활용도를 향상시키고, 제작장비와 공정을 단순화하여 제작원가를 절감시킬 수 있는 2단 속도조절 실린더에 관한 것이다.The present invention relates to a two-stage speed regulating cylinder used for two-stage speed control of industrial equipment or machine tools, and in particular, by allowing the two-stage speed control only by the cylinder itself without additionally installing a speed control valve outside the cylinder, The present invention relates to a two-stage speed control cylinder that can reduce the cost of the cylinder, improve the utilization of space, and reduce the manufacturing cost by simplifying the manufacturing equipment and process.

종래 산업기기 및 공작기계의 2단 속도제어를 위해서는 도 5의 도시와 같이 방향제어밸브(500)와 연결된 실린더(100)내에 피스톤로드(300)에 의해 왕복되는 실린더(200)를 설치하고, 실린더(100)와 방향제어밸브(500) 사이에 별도의 2단 속도 제어밸브(Cam 밸브 또는 Feed Control 밸브 등)를 설치하여 실린더(100)내의 압력변화에 따른 피스톤(200)의 속도를 제어하도록 구성하였다.For two-speed control of conventional industrial equipment and machine tools, a cylinder 200 reciprocated by a piston rod 300 is installed in a cylinder 100 connected to a direction control valve 500, as shown in FIG. A separate two-speed control valve (Cam valve or Feed Control valve, etc.) is installed between the 100 and the directional control valve 500 to control the speed of the piston 200 according to the pressure change in the cylinder 100. It was.

그러나 상기와 같은 구성의 종래 2단 속도조절 실린더는 속도제어를 위한 2단속도 제어밸브를 실린더외부에 별도로 설치해야하므로 별도의 공간이 필요하여 그 크기가 대형화되고 구조가 복잡해지는 문제점이 있으며, 이에 따른 공정상의 어려움과 제작원가가 상승하게 되는 문제점이 있었다.However, the conventional two-stage speed regulating cylinder having the above-described configuration requires a separate two-stage speed control valve for the speed control, so that a separate space is required, and the size thereof becomes larger and the structure becomes complicated. There was a problem in that the process difficulties and manufacturing costs increase.

본 발명은 상기와 같은 문제점을 해결하기 위하여 안출된 것으로서,The present invention has been made to solve the above problems,

실린더 자체만으로 2단속도제어가 가능토록 구성하므로서, 별도의 2단 속도제어밸브의 설치가 필요없어 그 구성을 단순화 할 뿐만 아니라 설치공간의 활용도를 극대화 하며, 제작원가를 절감시키고 제작이 용이하게 한 2단 속도조절 실린더를 제공함에 본 발명의 목적이 있다.The two-speed control valve can be controlled by the cylinder itself, which eliminates the need for the installation of a separate two-speed control valve, which not only simplifies its configuration but also maximizes the utilization of the installation space, reduces manufacturing costs, and facilitates manufacturing. It is an object of the present invention to provide a two speed regulating cylinder.

도 1 은 본 발명의 단면도.1 is a cross-sectional view of the present invention.

도 2 는 본 발명의 요부확대 단면도.Figure 2 is an enlarged cross-sectional view of the main part of the present invention.

도 3a 내지 도 3c는 본 발명의 작동상태를 도시한 단면도로서,3a to 3c are cross-sectional views showing the operating state of the present invention,

도3a는 2단피스톤이 전진하는 상태의 단면도이고,3A is a sectional view of a state where the two-stage piston advances,

도3b는 2단피스톤이 전진하여 소직경부가 정속구간부에 진입을 시작하는 상태의 단면도,3B is a cross-sectional view of a state where the two-stage piston advances and the small diameter portion starts to enter the constant speed section;

도 3c는 2단피스톤의 소직경부가 정속구간부에 완전히 삽입된 상태의 단면도이다.3C is a cross-sectional view of the small diameter portion of the two-stage piston fully inserted into the constant speed section.

도 4a 내지 도 4c 는 본 발명의 작동상태를 도시한 단면도로서,4a to 4c are cross-sectional views showing the operating state of the present invention,

도4a는 2단피스톤이 후진하기 시작한 상태의 단면도이고,4A is a cross-sectional view of the state where the two-stage piston starts to move backward;

도4b는 피스톤이 후진하여 소직경부가 정속구간부로부터 이탈되는 상태를 도시한 단면도,4B is a cross-sectional view showing a state in which the small diameter portion is separated from the constant speed section by reversing the piston;

도4c는 2단피스톤이 완전히 후진한 상태의 단면도이다.4C is a cross-sectional view of the two-stage piston fully retracted.

도 5 는 종래 2단 속도조절 실린더를 나타낸 개략설명도.5 is a schematic explanatory view showing a conventional two-stage speed regulating cylinder.

<도면의 주요 부분에 대한 부호의 설명><Explanation of symbols for the main parts of the drawings>

1 : 실린더2 : 대직경부1 cylinder 2 large diameter part

3 : 소직경부4 : 흡입포트3: small diameter part 4: suction port

5 : 배출포트6 : 조절스크류5: outlet port 6: adjusting screw

7 : 정속구간부8 : 체크밸브7: constant speed section 8: check valve

9,9' : 유로10 : 피스톤로드9,9 ': Euro 10: piston rod

이하 본 발명의 바람직한 실시예를 첨부된 도면을 참조하여 상세히 설명한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 1 은 본 발명의 단면도이고, 도 2는 본 발명의 부분확대 단면도이다.1 is a cross-sectional view of the present invention, Figure 2 is a partially enlarged cross-sectional view of the present invention.

피스톤로드(10)에 피스톤이 결합되어 실린더(1)내를 왕복되게 하고, 실린더(1) 양측에 흡입포트(4)와 배출포트(5)가 형성된 실린더에 있어서,In the cylinder in which the piston is coupled to the piston rod 10 to reciprocate in the cylinder 1, and the suction port 4 and the discharge port 5 are formed on both sides of the cylinder 1,

피스톤을 대직경부(2)와 소직경부(3)로 구분된 2단피스톤으로 형성하고, 소직경부(3)가 삽입되는 정속구간부(7)를 배출포트(5)측에 형성하고, 정속구간부(7)의 상하측에 배출포트(5)와 연통되도록 유로(9)(9')를 형성하되,The piston is formed of a two-stage piston divided into a large diameter portion (2) and a small diameter portion (3), and a constant speed section portion (7) into which the small diameter portion (3) is inserted is formed on the discharge port (5) side, and the constant speed section is formed. Channels 9 and 9 'are formed on the upper and lower sides of the part 7 so as to communicate with the discharge port 5,

상측 유로(9)상에는 조절스크류(6)를 설치하고, 하측 유로(9')상에는 체크밸브(8)를 설치하여 구성한 것이다.The adjustment screw 6 is provided on the upper flow path 9, and the check valve 8 is provided on the lower flow path 9 '.

이하, 상기와 같이 구성된 본 발명의 작용을 설명한다.Hereinafter, the operation of the present invention configured as described above.

본 발명 2단 속도조절 실린더의 작동을 살펴보면, 도 3a의 도시와 같이 흡입포트(4)를 통해 실린더(1)내로 유체가 유입되면 그 압력에 의해 2단피스톤이 이동을 시작하여 도 3b의 도시와 같이 고속으로 배출포트(5)측으로 이동하면서 유체를 정속구간부(7)와 배출포트(5)를 통해 배출되는 것이다.Looking at the operation of the two-stage speed control cylinder of the present invention, when the fluid flows into the cylinder 1 through the suction port 4 as shown in Figure 3a, the two-stage piston starts to move by the pressure shown in Figure 3b As described above, the fluid is discharged through the constant speed section 7 and the discharge port 5 while moving toward the discharge port 5 at a high speed.

이와 같이 이동하던 2단피스톤의 소직경부(3)가 정속구간부(7)로 삽입되어지면서 정속구간부(7)가 차단되고 소직경부(3)와 실린더(1) 내측면 사이공간에 충전되어 있던 유체가 상하측의 유로(9)(9')를 통해 배출구(5)로 배출되면서 유체의 병목현상에 의해 2단피스톤의 속도가 감속되고, 도 3c의 도시와 같이 소직경부(3)의 완전한 삽입에 의해 정속구간부(7)와 배출포트(5)가 완전히 차단되어 피스톤이 정지하게 되는 것이다.As the small diameter portion 3 of the two-stage piston moved as described above is inserted into the constant speed section 7, the constant speed section 7 is blocked and filled in the space between the small diameter part 3 and the inner surface of the cylinder 1. As the fluid is discharged to the outlet 5 through the upper and lower flow paths 9 and 9 ', the speed of the two-stage piston is reduced by the bottleneck of the fluid, and as shown in FIG. By the complete insertion, the constant speed section 7 and the discharge port 5 are completely blocked, and the piston stops.

이와 같이 정지된 2단피스톤이 다시 후진시에는 도 4a의 도시와 같이 배출포트(5)로 유체가 유입되어 상하측 유로(9)(9')를 통해 2단피스톤을 밀어 후진을 시작하고, 일정거리 만큼 2단피스톤이 후진하게 되면 배출포트(5)를 통해 유입된 유체가 정속구간부(7)와 유로(9)(9')를 통해 동시에 2단피스톤을 밀어 도 4b와 4c의 도시와 같이 일정한 속도로 2단피스톤을 후진시키는 것이다.When the two-stage piston stops as described above, the fluid flows into the discharge port 5 as shown in FIG. 4A and pushes the two-stage piston through the upper and lower flow paths 9 and 9 'to start reversing. When the two-stage piston moves backward by a certain distance, the fluid introduced through the discharge port 5 pushes the two-stage piston at the same time through the constant speed section 7 and the flow passage 9, 9 ', as shown in FIGS. 4B and 4C. As such, it reverses the two-stage piston at a constant speed.

이때, 상측 유로(9)상에 설치된 조절스크류(6)에 의해 유로(9)를 통과 하는 유체의 량을 조절할 수 있어 2단피스톤의 소직경부(3)가 정속구간부(7)에 삽입되는 속도를 조절할 수 있는 것이다.At this time, the amount of fluid passing through the flow path 9 can be adjusted by the adjusting screw 6 provided on the upper flow path 9 so that the small diameter portion 3 of the two-stage piston is inserted into the constant speed section 7. You can adjust the speed.

또한, 하측 유로(9')는 체크밸브(8)에 의해 2단피스톤의 전진시에는 유체의 흐름을 차단하고 있다가 후진시에 만 개방되어 유체를 통과 시키므로서 2단피스톤의 전후진 시 속도를 달리할 수 있는 것이다.In addition, the lower flow passage 9 'blocks the flow of the fluid when the two-stage piston moves forward by the check valve 8, but opens only when it moves backward, and passes the fluid so that the two-stage piston moves forward and backward. Will be different.

이와 같이 본 발명은 2단 속도제어를 할 수 있는 별도의 제어장치가 불필요하므로 구조를 단순화 하면서도 설치공간을 최소화 하며, 제작비용을 최소화 할 수 있는 것이다.As such, the present invention does not require a separate control device capable of two-speed control, thereby simplifying the structure, minimizing the installation space, and minimizing the manufacturing cost.

상기와 같이 본 발명은 실린더 자체만으로 2단속도제어가 가능토록 구성하므로서, 별도의 2단 속도제어밸브의 설치가 필요없어 그 구성을 단순화 할 뿐만 아니라 설치공간의 활용도를 극대화 하며, 제작원가를 절감시키고 제작이 용이하게 할 수 있는 것이다.As described above, the present invention is configured so that the two-speed control is possible only by the cylinder itself, and does not require the installation of a separate two-speed control valve, thereby simplifying the configuration and maximizing the utilization of the installation space and reducing the manufacturing cost. It can be made and made easy.

Claims

In the cylinder in which the piston is coupled to the piston rod 10 to reciprocate in the cylinder 1, and the suction port 4 and the discharge port 5 are formed on both sides of the cylinder 1,

The piston is formed of a two-stage piston divided into a large diameter portion (2) and a small diameter portion (3), and a constant speed section portion (7) into which the small diameter portion (3) is inserted is formed on the discharge port (5) side, and the constant speed section is formed. Channels 9 and 9 'are formed on the upper and lower sides of the part 7 so as to communicate with the discharge port 5,

A two-stage speed regulating cylinder, characterized in that an adjustment screw (6) is provided on the upper passage (9), and a check valve (8) is provided on the lower passage (9 ').