Multi-cylinder integrated clamp air cylinder

Abstract

The utility model discloses a multi-cylinder integrated clamp air cylinder which comprises a support, a cylinder body is fixedly connected to the support, a plurality of piston cavities are formed in the cylinder body, pistons and piston rods are movably arranged in the piston cavities, and the pistons divide the piston cavities into piston rear cavities and piston front cavities. A first air channel used for being communicated with each piston rear cavity and a second air channel used for being communicated with each piston front cavity are arranged in the support, a first air connecting opening communicated with the first air channel and a second air connecting opening communicated with the second air channel are formed in the support, a mounting groove is formed in the lower end of the support, and a pressing block is arranged in the mounting groove. The pressing block has a movable stroke in the mounting groove, one end of the piston rod is fixedly connected with the piston, the other end of the piston rod abuts against and is matched with the pressing block, a plurality of connecting grooves are formed in the support, connecting pieces connected with the pressing block are arranged in the connecting grooves, and springs and pneumatic locking tools are arranged between the connecting pieces and the connecting grooves. The working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of clamping cylinders, in particular to a multi-cylinder integrated clamping cylinder. Background Art

[0002] A bending machine, as an important metal processing equipment in industrial production, its main function is to perform shape processing such as bending and curving on metal plates, profiles, etc. During its precise operation process, the cutting tool, as a component directly in contact with the material, plays a crucial role. In the market, common bending machine cutting tools are usually fixed with screws during the installation process. When the length of the cutting tool is moderate, the installation method using screws is relatively convenient. However, when the length of the cutting tool is long, this installation method becomes very inconvenient. The operator needs to spend more time and energy to install the cutting tool, and it is very difficult to ensure the accuracy and stability of the installation. If the screws are not tightened, it may also lead to poor bending effect or machine failure. Therefore, it is necessary to make improvements. Content of the Utility Model

[0003] The purpose of the utility model is to provide a multi-cylinder integrated clamping cylinder aiming at the defects and deficiencies of the prior art, with a simple and reasonable structure, convenient operation, pneumatically locking the cutting tool, simplifying the installation, reducing manual operation, and improving work efficiency.

[0004] To achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A multi-cylinder integrated clamping cylinder of the utility model includes a support, a cylinder body is fixedly connected to the support, several piston chambers are arranged in the cylinder body, a piston and a piston rod are movably arranged in the piston chamber, the piston divides the piston chamber into a piston rear chamber and a piston front chamber, a first air passage for communicating each piston rear chamber and a second air passage for communicating each piston front chamber are arranged in the support, a first air connection port communicated with the first air passage and a second air connection port communicated with the second air passage are arranged on the support, an installation groove is arranged at the lower end of the support, a pressing block is arranged in the installation groove, the pressing block has a movable stroke in the installation groove, one end of the piston rod is fixedly connected with the piston, the other end of the piston rod abuts and cooperates with the pressing block, several connecting grooves are arranged in the support, a connecting member connected with the pressing block is arranged in the connecting groove, a spring is arranged between the connecting member and the connecting groove, and the spring has a movement tendency to make the pressing block abut against the piston rod.

[0006] Furthermore, a front cover is also arranged in the piston front chamber, a convex edge is arranged on the front cover, a limiting step for limiting and cooperating with the convex edge is arranged on the cylinder body, a limiting ring groove is arranged at one end of the cylinder body close to the support, an elastic retaining ring is arranged in the limiting ring groove, and the front cover is axially limited between the elastic retaining ring and the limiting step.

[0007] Further, an O-ring is provided between the front cover and the cylinder block.

[0008] Further, a dust seal is provided between the piston rod and the front cover.

[0009] Further, a bearing is provided between the piston rod and the front cover.

[0010] Further, a copper bushing is provided between the piston rod and the support.

[0011] Further, a first plug for blocking the first air passage and a second plug for blocking the second air passage are provided on the side wall of the cylinder block.

[0012] Further, a first connector is connected to the first air connection port, and a second connector is connected to the second air connection port.

[0013] Further, a protrusion for clamping is provided at one end of the pressing block away from the piston rod.

[0014] Further, the piston and the piston rod are fixedly connected by a hexagon nut, and a spring washer and a flat washer are provided between the hexagon nut and the piston.

[0015] The beneficial effects of the present utility model are as follows: For the multi-cylinder integrated fixture cylinder of the present utility model, multiple piston chambers are provided in the cylinder block, which can save installation and reduce pipeline fittings. The number of appropriate piston chambers can be selected according to the length of the tool. The support is provided with a first air passage for communicating the rear chambers of each piston and a second air passage for communicating the front chambers of each piston, which is convenient for uniformly controlling the extension and retraction movements of the piston rods in all piston chambers, improving work efficiency. The tool is placed in the installation groove, and the movement of multiple piston rods is controlled by the cylinder to drive the pressing block to clamp and release the tool. A protrusion for clamping is provided at one end of the pressing block away from the piston rod, so that the pressing block can clamp the tool more firmly. When the piston rod extends, the pressing block clamps the tool to ensure that the tool will not move or loosen. When the tool needs to be removed, only the air circuit needs to be switched and the piston rod is controlled to retract, and the tool can be easily removed. The installation process is more convenient, reducing the tediousness of manual operation and greatly improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic cross-sectional structure diagram of the present utility model;

[0017] Figure 2 is Figure 1 the enlarged structure diagram at A in

[0018] Figure 3 is a schematic structure diagram of the present utility model.

[0019] Figures 1-3Chinese: 1. Support; 11. Installation groove; 111. Pressing block; 1111. Protrusion; 12. Connection groove; 121. Connecting piece; 122. Spring; 13. Copper sleeve; 2. Cylinder block; 21. Limiting step; 22. Elastic retaining ring; 3. Piston; 31. Rear piston chamber; 32. Front piston chamber; 33. Hexagonal nut; 34. Spring washer; 35. Flat washer; 4. Piston rod; 5. First air passage; 51. First joint; 52. First plug; 6. Second air passage; 61. Second joint; 62. Second plug; 7. Front cover; 71. Flange; 72. O-ring; 73. Dust-proof ring; 74. Bearing. Detailed implementation mode

[0020] The present utility model will be further described below in conjunction with the accompanying drawings.

[0021] As Figures 1-3 shown, a multi-cylinder integrated fixture cylinder includes a support 1, the cylinder block 2 is fixedly connected to the support 1 by screws, and a plurality of piston chambers are provided in the cylinder block 2. Preferably, three piston chambers are provided in this embodiment. Of course, in other embodiments, there may be other numbers of piston chambers, and the appropriate number of piston chambers can be selected according to the length of the tool. When the tool is longer, the number of piston chambers can also be increased accordingly. A piston 3 and a piston rod 4 are movably arranged in the piston chamber. The piston 3 divides the piston chamber into a rear piston chamber 31 and a front piston chamber 32. A first air passage 5 for communicating each rear piston chamber 31 and a second air passage 6 for communicating each front piston chamber 32 are provided in the support 1, which is convenient for uniformly controlling the extension and retraction actions of the piston rods 4 in all piston chambers and improving work efficiency. A first air intake port communicating with the first air passage 5 and a second air intake port communicating with the second air passage 6 are provided on the support 1. Preferably, in this embodiment, a first joint 51 is connected to the first air intake port, and a second joint 61 is connected to the second air intake port. Air is introduced into the first air intake port through the first joint 51, and air is introduced into the second air intake port through the second joint 61. Preferably, in this embodiment, a first plug 52 for blocking the first air passage 5 and a second plug 62 for blocking the second air passage 6 are provided on the side wall of the cylinder block 2, which can prevent the gas in the first air passage 5 and the second air passage 6 from overflowing and prevent the intrusion of external gas and impurities, thereby improving the sealing performance. An installation groove 11 is provided at the lower end of the support 1, and a pressing block 111 is provided in the installation groove 11. The pressing block 111 has a movable stroke in the installation groove 11. One end of the piston rod 4 is fixedly connected to the piston 3, and the other end of the piston rod 4 abuts against the pressing block 111. A plurality of connection grooves 12 are provided in the support 1, and a connecting piece 121 connected to the pressing block 111 is provided in the connection groove 12. A spring 122 is provided between the connecting piece 121 and the connection groove 12. The spring 122 has a movement tendency to make the pressing block 111 abut against the piston rod 4, ensuring the reliability of the connection, and the spring 122 can play a role in resetting the pressing block 111.

[0022] The arrangement of multiple piston chambers inside the cylinder block 2 can save installation space and reduce pipeline fittings. The tool is placed in the installation groove 11, and the movement of multiple piston rods 4 is controlled by the cylinder to drive the pressing block 111 to clamp and release the tool. Preferably, in this embodiment, referring to Figure 3 , a protrusion 1111 for clamping is provided at one end of the pressing block 111 away from the piston rod 4, so that the pressing block 111 can clamp the tool more firmly. When the piston rod 4 extends, the pressing block 111 clamps the tool to ensure that the tool will not move or become loose. When the tool needs to be removed, only the air circuit needs to be switched to control the piston rod 4 to retract, and the tool can be easily removed. The installation process is more convenient, reducing the cumbersome degree of manual operation and greatly improving the work efficiency.

[0023] The working principle of the present utility model is as follows: When air enters the first air inlet through the first joint 51, the gas enters each piston rear chamber 31 through the first air passage 5, controls the movement of the piston 3 and then drives the piston rod 4 to extend. The piston rod 4 exerts pressure on the pressing block 111, causing the pressing block 111 to overcome the elastic force of the spring 122 and push out to clamp the tool. When air enters the second air inlet through the second joint 61, the gas enters each piston front chamber 32 through the second air passage 6, pushes the piston 3 to move and then drives the piston rod 4 to retract. The pressing block 111 resets and releases the tool under the elastic force of the spring 122.

[0024] Preferably, in this embodiment, a front cover 7 is further provided in the piston front chamber 32. A convex edge 71 is provided on the front cover 7, and a limiting step 21 for limiting cooperation with the convex edge 71 is provided on the cylinder block 2. A limiting ring groove is provided at one end of the cylinder block 2 close to the support 1, and a snap ring 22 is provided in the limiting ring groove. The limiting ring groove plays a role in limiting the snap ring 22 to prevent its undesired movement. The front cover 7 is axially limited between the snap ring 22 and the limiting step 21, making it difficult for the front cover 7 to displace, ensuring that the movement of the piston 3 is within a reasonable stroke range.

[0025] Preferably, in this embodiment, an O-ring 72 is provided between the front cover 7 and the cylinder block 2 to improve the sealing performance between the front cover 7 and the cylinder block 2 and prevent gas leakage.

[0026] Preferably, in this embodiment, a dust-proof ring 73 is provided between the piston rod 4 and the front cover 7 to prevent dust and other sundries from entering and affecting the use, protect the internal parts from being invaded by external dust, maintain its cleanliness and extend the service life.

[0027] Preferably, in this embodiment, a bearing 74 is provided between the piston rod 4 and the front cover 7, which can effectively reduce the friction and wear generated by the movement of the piston rod 4 and extend the service life of the piston rod 4.

[0028] Preferably, in this embodiment, a copper sleeve 13 is provided between the piston rod 4 and the support 1, which plays a buffering role, reduces the wear caused by friction, and prolongs the service life of the piston rod 4.

[0029] Preferably, in this embodiment, the piston 3 and the piston rod 4 are fixedly connected by a hexagonal nut 33. A spring washer 34 and a flat washer 35 are provided between the hexagonal nut 33 and the piston 3. The spring washer 34 is made of an elastic material and can provide a certain pressure during connection to ensure the tightness of the connection and prevent loosening caused by vibration or other reasons. The flat washer 35 can increase the contact area, make the connection more tight, and eliminate the damage to the surface of the piston 3 when removing the hexagonal nut 33 by the spring washer 34.

[0030] The above is only the preferred embodiment of the present invention. Therefore, any equivalent changes or modifications made according to the structure, features and principles described in the scope of the patent application of the present invention are included in the scope of the patent application of the present invention.

Claims

1. A multi-cylinder integrated clamp cylinder, comprising a support (1), characterized in that: The support (1) is fixedly connected to a cylinder body (2), wherein a plurality of piston chambers are provided in the cylinder body (2), wherein a piston (3) and a piston rod (4) are movably provided in the piston chamber, wherein the piston (3) divides the piston chamber into a piston rear chamber (31) and a piston front chamber (32), wherein a first air channel (5) for connecting each piston rear chamber (31) and a second air channel (6) for connecting each piston front chamber (32) are provided in the support (1), wherein a first air inlet connected to the first air channel (5) and a second air inlet connected to the second air channel (6) are provided on the support (1), and a mounting groove is provided at the lower end of the support (1). (11), a pressure block (111) is provided in the installation groove (11), and the pressure block (111) has a movable stroke in the installation groove (11), one end of the piston rod (4) is fixedly connected to the piston (3), and the other end of the piston rod (4) is in abutment with the pressure block (111), a plurality of connecting grooves (12) are provided in the support (1), and a connecting piece (121) connected to the pressure block (111) is provided in the connecting groove (12), and a spring (122) is provided between the connecting piece (121) and the connecting groove (12), and the spring (122) has a movement tendency to make the pressure block (111) and the piston rod (4) abut against each other.

2. The multi-cylinder integrated clamp cylinder according to claim 1, characterized in that: A front cover (7) is also provided in the piston front cavity (32), the front cover (7) is provided with a convex edge (71), the cylinder body (2) is provided with a limiting step (21) that cooperates with the convex edge (71) in limiting position, a limiting ring groove is provided at one end of the cylinder body (2) close to the support (1), an elastic retaining ring (22) is provided in the limiting ring groove, and the front cover (7) is axially limited between the elastic retaining ring (22) and the limiting step (21).

3. The multi-cylinder integrated clamp cylinder according to claim 2, characterized in that: An O-ring (72) is disposed between the front cover (7) and the cylinder body (2).

4. The multi-cylinder integrated clamp cylinder according to claim 2, characterized in that: A dustproof ring (73) is provided between the piston rod (4) and the front cover (7).

5. The multi-cylinder integrated clamp cylinder according to claim 2, characterized in that: A bearing (74) is provided between the piston rod (4) and the front cover (7).

6. The multi-cylinder integrated clamp cylinder according to claim 1, characterized in that: A copper sleeve (13) is provided between the piston rod (4) and the support (1).

7. The multi-cylinder integrated clamp cylinder according to claim 1, characterized in that: A first thread plug (52) for blocking the first air passage (5) and a second thread plug (62) for blocking the second air passage (6) are provided on the side wall of the cylinder body (2).

8. The multi-cylinder integrated clamp cylinder according to claim 1, characterized in that: The first air inlet is connected to a first joint (51), and the second air inlet is connected to a second joint (61).

9. The multi-cylinder integrated clamp cylinder according to claim 1, characterized in that: A protrusion (1111) for clamping is provided on one end of the pressure block (111) away from the piston rod (4).

10. The multi-cylinder integrated clamp cylinder according to claim 1, characterized in that: The piston (3) and the piston rod (4) are fixedly connected via a hexagonal nut (33), and a spring washer (34) and a flat washer (35) are disposed between the hexagonal nut (33) and the piston (3).

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