Powerful clamping cylinder with gas cut-off mechanical locking function

Abstract

The utility model discloses a powerful clamping cylinder with a gas cut-off mechanical locking function, and particularly relates to the technical field of powerful clamping cylinders, the powerful clamping cylinder comprises a mechanical connecting rod part and an air cylinder which are fixedly distributed up and down, the mechanical connecting rod part comprises a piston rod, and a gas cut-off mechanical locking mechanism is fixedly arranged at the top end of the air cylinder. The air-cut mechanical locking mechanism comprises a mounting block, an air cavity is formed in the mounting block, the bottom end of the piston rod sequentially penetrates through the mounting block and the air cavity and extends into the air cylinder, a piston block is slidably arranged in the air cavity, and two hinged locking plates are arranged on one side of the piston block. The air-cut mechanical locking mechanism is arranged at the top of the air cylinder and used for automatically locking the piston rod, the piston rod is not locked when the two locking plates are closed during working, and the piston rod is locked when the air is cut off, so that the air-cut mechanical locking function is realized, the piston rod can be automatically locked in emergency, and the service life of the piston rod is prolonged. And the powerful clamping cylinder is prevented from being damaged.

Description

Technical Field

[0001] The utility model relates to the technical field of powerful clamping cylinders, and more specifically to a powerful clamping cylinder with a function of air-off mechanical locking. Background Technique

[0002] A clamping cylinder, also known as a clamping air cylinder or a clamping hydraulic cylinder, is an important device for clamping materials in industrial production. The clamping air cylinder mainly consists of an air cylinder, a piston rod, a piston, seals, etc. The working principle of the clamping cylinder is based on Pascal's principle, that is, in a closed liquid system, the pressure is equal in all directions. When compressed air enters the cavity of the clamping cylinder, it pushes the piston to move, and this movement is converted into a clamping action through a connecting rod or other mechanical structures.

[0003] For example, the rotary clamping air cylinder with the publication number of CN211924614U in the prior art. By operating the tightening or withdrawal of the screw and selecting the appropriate depth for the guide pin to extend into the guide groove, it is not only beneficial to drive the piston rod to move, but also greatly improves the smoothness of the cooperation between the guide groove and the guide pin.

[0004] However, the above-mentioned prior art still has the following problems when in use: The piston rod is fixed by the method of screw adjustment, relying on manual adjustment by the staff, and it cannot automatically lock the piston rod in case of emergency, which is easy to damage the powerful clamping cylinder. Based on this, the utility model provides a powerful clamping cylinder with a function of air-off mechanical locking. Content of the Utility Model

[0005] In order to overcome the above-mentioned defects of the prior art, the utility model provides a powerful clamping cylinder with a function of air-off mechanical locking. By setting an air-off mechanical locking mechanism at the top of the air cylinder to automatically lock the piston rod, during operation, the two locking plates are closed and do not lock the piston rod. When the air is cut off, at this time, the two locking plates open to lock the piston rod, so as to realize the function of air-off mechanical locking and solve the problems in the above-mentioned background technique.

[0006] To achieve the above object, the utility model provides the following technical solution: A powerful clamping cylinder with a function of air-off mechanical locking, including a mechanical connecting rod part and an air cylinder which are fixedly distributed up and down. The mechanical connecting rod part includes a piston rod. A gas-off mechanical locking mechanism is fixedly arranged at the top end of the air cylinder. The gas-off mechanical locking mechanism includes a mounting block. An air cavity is arranged inside the mounting block. The bottom end of the piston rod sequentially penetrates through the mounting block and the air cavity and extends into the air cylinder. A piston block is slidably arranged in the air cavity. Two hinged locking plates are arranged on one side of the piston block. The locking plates are arranged in the air cavity. Through holes are opened on both locking plates, and the piston rod penetrates through the two through holes. A compression spring is connected between the ends of the two locking plates away from the hinge. A return spring is fixedly arranged between the side of the piston block close to the piston rod and the inner wall of the air cavity, and the return spring is sleeved outside the two locking plates.

[0007] In a preferred embodiment, the mechanical link part further includes a housing and a rotating shaft, wherein the housing is fixed to the top of the mounting block, and the rotating shaft passes through the housing for adjusting the angle.

[0008] In a preferred embodiment, a rack connecting piece is connected to the top end of the piston rod, and the rack connecting piece is transmission-connected to the rotating shaft via a connecting rod assembly.

[0009] In a preferred embodiment, a sensor is provided on one side of the shell, and the sensor includes a sensing strip, a signal coil and two sensing blocks. The sensing strip is fixed on the top of the mounting block, and the top of the sensing strip extends into the shell. The signal coil is detachably fixed on the sensing strip, and the two sensing blocks are fixedly embedded on the inner wall of the shell. The sensor is used to detect the position of the piston rod to ensure the normal use of the piston rod.

[0010] In a preferred embodiment, one side of the mounting block is connected to a gas circuit, and the gas circuit is connected to an OR valve. Specifically, the OR valve is a pneumatic control element, whose main feature is that its logical function is "OR" logic, and the OR valve is used to control the flow of gas.

[0011] In a preferred embodiment, a limiting groove is provided on the side of the piston block close to the piston rod, and the cross-section of the limiting groove is set to be funnel-shaped. The two locking plates are arranged in the limiting groove at the ends away from the hinge to limit the movement of the two locking plates.

[0012] Technical effects and advantages of the utility model:

[0013] The utility model provides a gas-off mechanical locking mechanism on the top of the cylinder to automatically lock the piston rod. When working, the two locking plates are closed and do not lock the piston rod. When the gas is cut off, the two locking plates are opened to lock the piston rod, thereby realizing the gas-off mechanical locking function, which can automatically lock the piston rod in an emergency and avoid damage to the strong clamping cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the piston rod of the utility model in an unlocked state;

[0016] Figure 3 This is a schematic diagram of the piston rod locked state of the utility model;

[0017] Figure 4 This is the overall structural front view of the utility model;

[0018] Figure 5 It is a side view of the overall structure of the utility model;

[0019] Figure 6 This is the overall structural sectional view of the present utility model.

[0020] The reference numerals in the drawings are: 1. Mechanical connecting rod part; 2. Cylinder; 3. Air cut-off mechanical locking mechanism; 4. Through hole; 5. Rack connecting piece; 6. Connecting rod assembly; 7. Sensor; 8. Air circuit; 9. Or valve; 10. Limit groove;

[0021] 101. Piston rod; 102. Housing; 103. Rotating shaft;

[0022] 301. Mounting block; 302. Air chamber; 303. Piston block; 304. Locking plate; 305. Compression spring; 306. Return spring;

[0023] 701. Induction strip; 702. Signal coil; 703. Induction block. Specific embodiments

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0025] Referring to the attached drawings of the specification Figures 1-6 The present utility model provides a powerful clamping cylinder with an air cut-off mechanical locking function, including a mechanically connected rod part 1 and a cylinder 2 fixedly distributed up and down. The mechanically connected rod part 1 includes a piston rod 101, and an air cut-off mechanical locking mechanism 3 is fixedly provided at the top end of the cylinder 2;

[0026] The air cut-off mechanical locking mechanism 3 includes a mounting block 301. An air chamber 302 is provided inside the mounting block 301. The bottom end of the piston rod 101 sequentially penetrates through the mounting block 301 and the air chamber 302 and extends into the cylinder 2. A piston block 303 is slidably provided in the air chamber 302. Two hinged locking plates 304 are provided on one side of the piston block 303, and the locking plates 304 are provided in the air chamber 302;

[0027] Specifically, a limiting groove 10 is provided on the side of the piston block 303 close to the piston rod 101, and the cross section of the limiting groove 10 is set to be funnel-shaped. Two locking plates 304 are arranged in the limiting groove 10 at one end away from the hinge. Through holes 4 are opened on the two locking plates 304, and the piston rod 101 passes through the two through holes 4. A compression spring 305 is connected between the ends of the two locking plates 304 away from the hinge. A return spring 306 is fixedly provided between the side of the piston block 303 close to the piston rod 101 and the inner wall of the air cavity 302, and the return spring 306 is sleeved on the outside of the two locking plates 304;

[0028] In addition, a gas path 8 is connected to one side of the mounting block 301, and the gas path 8 is connected to an OR valve 9. Specifically, the OR valve 9 is a pneumatic control element, and its main feature is that its logical function is "OR" logic, and the OR valve 9 is used to control the flow of gas.

[0029] By setting a gas-off mechanical locking mechanism 3 on the piston rod 101, one side of the air cavity 302 is a G1 / 8 threaded hole, the air path 8, or the valve 9 is connected to the air cavity 302, and the or valve 9 is connected to the cylinder 2, so that the air cavity 302 and the cylinder 2 use the same air supply system, and gas is transported to the air cavity 302 in the mounting block 301. The gas pushes the piston block 303 to move toward the piston rod 101 and compresses the return spring 306 at the same time, so that the end of the locking plate 304 close to the piston block 303 moves along the inner wall of the limit groove 10, so that the two locking plates 304 are closed and the compression spring 305 is compressed at the same time. At this time, the piston rod 101 can slide up and down along the through holes 4 of the two locking plates 304, which means that the piston rod 101 is not locked. Figure 2 As shown, once the gas is cut off, the piston block 303 is pushed away from the piston rod 101 by the elastic force of the return spring 306. At this time, the two locking plates 304 are opened by the elastic force of the compression spring 305, so that the inner wall of the through hole 4 on the locking plate 304 clamps the piston rod 101, locking the piston rod 101. Figure 3 As shown, the function of mechanically locking the piston rod 101 by cutting off the air is realized, and the piston rod 101 can be automatically locked in an emergency to avoid damage to the strong clamping cylinder.

[0030] Refer to the instruction manual Figures 1-6 The mechanical connecting rod part 1 also includes a housing 102 and a rotating shaft 103. The housing 102 is fixed to the top of the mounting block 301. The rotating shaft 103 passes through the housing 102. The top of the piston rod 101 is connected to a rack connecting member 4. The rack connecting member 4 and the rotating shaft 103 are connected to each other through a connecting rod assembly 5.

[0031] Moreover, a sensor 7 is provided on one side of the housing 102. The sensor 7 includes an induction strip 701, a signal coil 702, and two induction blocks 703. The induction strip 701 is fixed to the top of the mounting block 301, and the top of the induction strip 701 extends into the housing 102. The signal coil 702 is detachably fixed to the induction strip 701, and the two induction blocks 703 are both fixedly embedded in the inner wall of the housing 102. The sensor 7 can detect the clamping signal, thereby realizing the function of clamping different sheet materials.

[0032] Finally, the above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A powerful clamping cylinder with a gas-off mechanical locking function, characterized in that: It comprises a mechanical connecting rod part (1) and a cylinder (2) which are fixedly distributed up and down, the mechanical connecting rod part (1) comprises a piston rod (101), and a gas-cutting mechanical locking mechanism (3) is fixedly provided at the top end of the cylinder (2); The gas-off mechanical locking mechanism (3) comprises a mounting block (301), an air cavity (302) is provided inside the mounting block (301), the bottom end of the piston rod (101) passes through the mounting block (301) and the air cavity (302) in sequence and extends into the cylinder (2), a piston block (303) is slidably provided in the air cavity (302), two hinged locking plates (304) are provided on one side of the piston block (303), the locking plates (304) are arranged in the air cavity (302), through holes (4) are provided on the two locking plates (304), and the piston rod (101) passes through the two through holes (4); A compression spring (305) is connected between the ends of the two locking plates (304) away from the hinge, and a return spring (306) is fixedly provided between the side of the piston block (303) close to the piston rod (101) and the inner wall of the air cavity (302), and the return spring (306) is sleeved on the outside of the two locking plates (304).

2. A powerful clamping cylinder with a gas-off mechanical locking function according to claim 1, characterized in that: The mechanical connecting rod part (1) further comprises a housing (102) and a rotating shaft (103); the housing (102) is fixed on the top of the mounting block (301), and the rotating shaft (103) passes through the housing (102).

3. A powerful clamping cylinder with a gas-off mechanical locking function according to claim 2, characterized in that: The top end of the piston rod (101) is connected to a rack connecting piece (5), and the rack connecting piece (5) is transmission-connected to the rotating shaft (103) via a connecting rod assembly (6).

4. A powerful clamping cylinder with a gas-off mechanical locking function according to claim 2, characterized in that: A sensor (7) is provided on one side of the shell (102), and the sensor (7) comprises a sensing bar (701), a signal coil (702) and two sensing blocks (703); the sensing bar (701) is fixed on the top of the mounting block (301), and the top of the sensing bar (701) extends into the shell (102); the signal coil (702) is detachably fixed on the sensing bar (701), and the two sensing blocks (703) are both fixedly embedded on the inner wall of the shell (102).

5. A powerful clamping cylinder with a gas-off mechanical locking function according to claim 1, characterized in that: One side of the mounting block (301) is connected to a gas path (8), and the gas path (8) is connected to a valve (9).

6. A powerful clamping cylinder with a gas-off mechanical locking function according to claim 1, characterized in that: A limiting groove (10) is provided on one side of the piston block (303) close to the piston rod (101), the cross section of the limiting groove (10) is arranged in a funnel shape, and the ends of the two locking plates (304) away from the hinge are both arranged in the limiting groove (10).

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