Stable pneumatic supporting cylinder

Abstract

The utility model relates to the technical field of pneumatics, in particular to a stable pneumatic supporting cylinder which comprises a cylinder body, a rear cover is arranged at one end of the cylinder body, an upper cover is arranged at the other end of the cylinder body, a movable bottom piston is arranged on the inner wall of the rear cover, and the bottom piston is connected with the inner side of the rear cover through a first spring. One end of the supporting rod is connected with the rear cover, and the other end penetrates through the upper cover and is fixedly connected with the contact screw; and a connecting sleeve and the like are arranged in the supporting rod. The clamping sleeve, the lock sleeve, the clasping piston and other structures which are specially designed are adopted, the stability of the supporting cylinder is effectively improved, the structures can ensure that a workpiece can keep a stable position and posture in the supporting process, and therefore the machining precision and the workpiece quality are improved; the supporting force of the supporting cylinder can be easily adjusted by controlling the gas flow of the gas inlet and the gas outlet, the adjustability enables the supporting cylinder to adapt to different workpieces and machining requirements, and the flexibility and the applicability of the supporting cylinder are improved.

Description

Technical Field

[0001] The utility model relates to the field of pneumatic technology, and more specifically to a stable pneumatic support cylinder. Background Art

[0002] In industrial production, workpieces often need to maintain a stable position and posture during the processing to ensure processing accuracy and workpiece quality; however, due to factors such as the workpiece's own gravity and the cutting force generated during the processing, the workpiece often deforms or shifts, affecting the processing accuracy; therefore, a device that can provide a stable support force is needed to solve this problem;

[0003] Traditional support devices often use mechanical or hydraulic structures, but these structures often have problems such as complex structure, difficult maintenance, and slow response speed. As a new type of support device, pneumatic support cylinders have the advantages of simple structure, easy maintenance, and fast response speed, and are gradually being widely used in industrial production.

[0004] However, the existing pneumatic support cylinders also have some problems during use, such as unstable supporting force, poor fixing effect, inconvenient disassembly and assembly, etc. Therefore, it is urgent to develop a stable pneumatic support cylinder that improves the stability and sealing of the support cylinder, simplifies the disassembly and assembly process, and improves the use efficiency. Utility Model Content

[0005] The purpose of the utility model is: in order to solve the above technical problems, the utility model provides a stable pneumatic support cylinder, aiming to improve the stability and sealing of the support cylinder, while simplifying the disassembly and assembly process and improving the use efficiency.

[0006] In order to achieve the above-mentioned purpose, the utility model specifically adopts the following technical solutions:

[0007] The utility model proposes a stable pneumatic support cylinder, comprising a cylinder body, one end of the cylinder body is provided with a rear cover, the other end is provided with an upper cover, a movable bottom piston is provided on the inner wall of the rear cover, and the bottom piston is connected to the inner side of the rear cover through a first spring;

[0008] One end of the support rod is connected to the rear cover, and the other end passes through the upper cover and is fixedly connected to the contact screw; a connecting sleeve is provided inside the support rod, one end of the connecting sleeve is fixedly connected to the bottom piston, and the other end is connected to the contact screw through a third spring;

[0009] The jacket is fitted with the support rod, one end of the jacket contacts the rear cover, and the other end contacts the upper cover; an inclined surface is provided on the outer wall of the jacket, and the inclined surface is inclined downward from the end close to the rear cover to the direction away from the rear cover;

[0010] The lock sleeve is fitted with the jacket through the steel ball; the inner wall of the lock sleeve is provided with an inclined surface, which is opposite to the inclined surface of the outer wall of the jacket, that is, it is inclined upward from the end close to the rear cover to the direction away from the rear cover;

[0011] The clamping piston is sleeved on the locking sleeve, and the clamping piston is movably connected to the inner wall of the cylinder body and the outer wall of the bottom cover;

[0012] The cylinder body and the bottom cover are both provided with mutually connected air inlet and outlet ports;

[0013] The lower spring retaining ring and the upper spring retaining ring are both movably sleeved on the outer wall of the jacket, the lower spring retaining ring is close to the air inlet and outlet, the upper spring retaining ring is close to the steel ball and the lock sleeve, and the lower spring retaining ring and the upper spring retaining ring are connected by a second spring.

[0014] As a preferred technical solution of the utility model, the bottom piston is provided with a groove, and a Y-shaped sealing ring is arranged in the groove for sealing with the rear cover;

[0015] A first O-type sealing ring is arranged at the contacting part of the bottom cover and the bottom piston; a groove is arranged on the outer wall of the bottom cover, and a second O-type sealing ring is arranged in the groove for sealing with the cylinder body.

[0016] As a preferred technical solution of the utility model, the connecting sleeve and the third spring are plug-fitted to ensure stable movement of the connecting sleeve.

[0017] As a preferred technical solution of the utility model, a shaft wire retaining ring is provided between the spring lower retaining ring and the jacket to enhance the stability of the spring lower retaining ring.

[0018] As a preferred technical solution of the utility model, a groove is provided on the outer wall of the bottom cover, and a third O-ring is placed in the groove for sealing with the clamping piston.

[0019] As a preferred technical solution of the utility model, a groove is provided at the bottom end of the clamping piston, and a fourth O-ring is placed in the groove for sealing with the upper cover.

[0020] As a preferred technical solution of the utility model, a groove is provided on the outer wall of the upper cover, and a fifth O-type sealing ring is placed in the groove to achieve sealing with the cylinder body;

[0021] A dustproof ring is provided on the inner wall of the upper cover to achieve dustproof sealing with the support rod.

[0022] As a preferred technical solution of the utility model, the contact screw is provided with a groove, and a sixth O-ring is placed in the groove for sealing the connection portion between the support rod and the contact screw.

[0023] The beneficial effects of the utility model are as follows:

[0024] The utility model effectively improves the stability of the support cylinder by adopting specially designed structures such as a jacket, a locking sleeve and a clamping piston. These structures can ensure that the workpiece can maintain a stable position and posture during the support process, thereby improving the processing accuracy and workpiece quality; the support force of the support cylinder can be easily adjusted by controlling the gas flow of the inlet and outlet ports. This adjustability enables the support cylinder to adapt to different workpieces and processing requirements, improving its flexibility and applicability; the pneumatic support cylinder has the advantage of fast response speed, and can respond quickly and apply stable support force in a short time, which is crucial for the processing process that requires rapid positioning and fixing of the workpiece; the structural design of the support cylinder is concise and easy to operate, and users can easily install, debug and use it, reducing the threshold for use and maintenance costs; by adopting sealing measures such as O-rings and dust rings, the support cylinder has good sealing, which can prevent gas leakage and dust from entering, ensuring the stability and reliability of the support cylinder; the support cylinder is made of high-quality materials and precision processing technology, and has high durability and reliability; it can operate stably for a long time in harsh working environments, reducing production delays and cost losses caused by equipment failures. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the cutaway structure of the utility model.

[0026] Figure numerals: 1. first O-ring; 2. bottom piston; 3. Y-ring; 4. bottom cover; 5. second O-ring; 6. first spring; 7. wire retaining ring for hole; 8. wire retaining ring for shaft; 9. lower spring retaining ring; 10. third O-ring; 11. second spring; 12. jacket; 13. upper spring retaining ring; 14. steel ball; 15. cylinder body; 16. connecting sleeve; 17. holding piston; 18. locking sleeve; 19. support rod; 20. third spring; 21. upper cover; 22. fourth O-ring; 23. dust ring; 24. fifth O-ring; 25. sixth O-ring; 26. contact screw; 27. air inlet and outlet. DETAILED DESCRIPTION Example 1

[0027] like Figure 1 As shown, the utility model proposes a stable pneumatic support cylinder, including a cylinder body, a rear cover is arranged at one end of the cylinder body, and an upper cover is arranged at the other end, a movable bottom piston is arranged on the inner wall of the rear cover, and the bottom piston is connected to the inner side of the rear cover through a first spring;

[0028] One end of the support rod is connected to the rear cover, and the other end passes through the upper cover and is fixedly connected to the contact screw; a connecting sleeve is provided inside the support rod, one end of the connecting sleeve is fixedly connected to the bottom piston, and the other end is connected to the contact screw through a third spring;

[0029] The jacket is fitted with the support rod, one end of the jacket contacts the rear cover, and the other end contacts the upper cover; an inclined surface is provided on the outer wall of the jacket, and the inclined surface is inclined downward from the end close to the rear cover to the direction away from the rear cover;

[0030] The lock sleeve is fitted with the jacket through the steel ball; the inner wall of the lock sleeve is provided with an inclined surface, which is opposite to the inclined surface of the outer wall of the jacket, that is, it is inclined upward from the end close to the rear cover to the direction away from the rear cover;

[0031] The clamping piston is sleeved on the locking sleeve, and the clamping piston is movably connected to the inner wall of the cylinder body and the outer wall of the bottom cover;

[0032] The cylinder body and the bottom cover are both provided with mutually connected air inlet and outlet ports;

[0033] The lower spring retaining ring and the upper spring retaining ring are both movably sleeved on the outer wall of the jacket, the lower spring retaining ring is close to the air inlet and outlet, the upper spring retaining ring is close to the steel ball and the lock sleeve, and the lower spring retaining ring and the upper spring retaining ring are connected by a second spring.

[0034] The bottom piston is provided with a groove, and a Y-shaped sealing ring is arranged in the groove to achieve sealing with the rear cover;

[0035] A first O-type sealing ring is arranged at the contacting part of the bottom cover and the bottom piston; a groove is arranged on the outer wall of the bottom cover, and a second O-type sealing ring is arranged in the groove for sealing with the cylinder body.

[0036] The connecting sleeve and the third spring are plug-fitted to ensure stable movement of the connecting sleeve.

[0037] Among them, a steel wire retaining ring for the shaft is arranged between the lower retaining ring of the spring and the jacket to enhance the stability of the lower retaining ring of the spring.

[0038] Among them, the outer wall of the bottom cover is provided with a groove, and a third O-ring is placed in the groove for sealing with the clamping piston.

[0039] Wherein, a groove is provided at the bottom end of the clamping piston, and a fourth O-ring is placed in the groove for sealing with the upper cover.

[0040] The outer wall of the upper cover is provided with a groove, in which a fifth O-ring is placed to achieve sealing with the cylinder body;

[0041] A dustproof ring is provided on the inner wall of the upper cover to achieve dustproof sealing with the support rod.

[0042] The contact screw is provided with a groove, in which a sixth O-ring is placed for sealing the connection between the support rod and the contact screw.

[0043] Working principle:

[0044] The utility model is based on the combination of air pressure drive and mechanical structure; when the gas enters the cylinder body through the air inlet and outlet, the air pressure acts on the bottom piston, pushing the bottom piston and the connecting sleeve connected thereto to move along the direction of the support rod; because the other end of the connecting sleeve is connected to the contact screw through the third spring, when the bottom piston moves, the connecting sleeve will drive the support rod to move together until the contact screw contacts the workpiece and applies a stable supporting force;

[0045] During the movement, the clearance between the jacket and the support rod is matched, allowing the support rod to move freely; and the lock sleeve is matched with the clearance between the steel ball and the jacket, ensuring that the lock sleeve can slide freely on the jacket when the support rod moves; at the same time, the clamping piston is matched with the lock sleeve set, and can move on the inner wall of the cylinder body and the outer wall of the bottom cover, thereby playing the role of fixing and stabilizing the lock sleeve;

[0046] When the supporting force needs to be adjusted, it can be achieved by controlling the gas flow rate at the inlet and outlet. Increasing the gas flow rate can increase the gas pressure, thereby increasing the supporting force; reducing the gas flow rate will reduce the gas pressure and reduce the supporting force.

[0047] During the supporting process, the spring lower retaining ring and the spring upper retaining ring are connected by the second spring to form an elastic system, which can alleviate the vibration and impact force generated by the workpiece to a certain extent and protect the supporting cylinder and the workpiece.

[0048] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode includes only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should be aware that the technical solutions in each embodiment can also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A stable pneumatic support cylinder, comprising a cylinder body, one end of the cylinder body is provided with a rear cover, and the other end is provided with an upper cover, characterized in that: A movable bottom piston is provided on the inner wall of the rear cover, and the bottom piston is connected to the inner side of the rear cover through a first spring; One end of the support rod is connected to the rear cover, and the other end passes through the upper cover and is fixedly connected to the contact screw; a connecting sleeve is provided inside the support rod, one end of the connecting sleeve is fixedly connected to the bottom piston, and the other end is connected to the contact screw through a third spring; The jacket is fitted with the support rod, one end of the jacket contacts the rear cover, and the other end contacts the upper cover; an inclined surface is provided on the outer wall of the jacket, and the inclined surface is inclined downward from the end close to the rear cover to the direction away from the rear cover; The lock sleeve is fitted with the jacket through the steel ball; the inner wall of the lock sleeve is provided with an inclined surface, which is opposite to the inclined surface of the outer wall of the jacket, that is, it is inclined upward from the end close to the rear cover to the direction away from the rear cover; The clamping piston is sleeved on the locking sleeve, and the clamping piston is movably connected to the inner wall of the cylinder body and the outer wall of the bottom cover; The cylinder body and the bottom cover are both provided with mutually connected air inlet and outlet ports; The lower spring retaining ring and the upper spring retaining ring are both movably sleeved on the outer wall of the jacket, the lower spring retaining ring is close to the air inlet and outlet, the upper spring retaining ring is close to the steel ball and the lock sleeve, and the lower spring retaining ring and the upper spring retaining ring are connected by a second spring.

2. A stable pneumatic support cylinder according to claim 1, characterized in that: The bottom piston is provided with a groove, and a Y-shaped sealing ring is arranged in the groove for sealing with the rear cover; A first O-type sealing ring is arranged at the contacting part of the bottom cover and the bottom piston; a groove is arranged on the outer wall of the bottom cover, and a second O-type sealing ring is arranged in the groove for sealing with the cylinder body.

3. A stable pneumatic support cylinder according to claim 1, characterized in that: The connecting sleeve and the third spring are plug-fitted.

4. A stable pneumatic support cylinder according to claim 1, characterized in that: A steel wire retaining ring for the shaft is arranged between the lower retaining ring of the spring and the jacket.

5. A stable pneumatic support cylinder according to claim 1, characterized in that: The outer wall of the bottom cover is provided with a groove, and a third O-ring is placed in the groove for sealing with the clamping piston.

6. A stable pneumatic support cylinder according to claim 1, characterized in that: A groove is arranged at the bottom end of the clamping piston, and a fourth O-ring is placed in the groove for sealing with the upper cover.

7. A stable pneumatic support cylinder according to claim 1, characterized in that: The outer wall of the upper cover is provided with a groove, in which a fifth O-type sealing ring is placed to achieve sealing with the cylinder body; A dustproof ring is provided on the inner wall of the upper cover to achieve dustproof sealing with the support rod.

8. A stable pneumatic support cylinder according to claim 1, characterized in that: The contact screw is provided with a groove, in which a sixth O-type sealing ring is placed for sealing the connection portion between the support rod and the contact screw.

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