Combined pneumatic clamp

Abstract

The utility model relates to the technical field of pneumatic clamps, and discloses a combined pneumatic clamp which comprises a clamp body and clamping fingers arranged on the clamp body, and a limiting hole is formed in the center of one side of the top of each clamping finger. The blades are arranged at the tops of the clamping fingers, limiting columns are installed on one sides of the bottoms of the blades and inserted into the limiting holes, and guide columns are inserted into the bottoms of the limiting columns; the base is arranged at the bottom of the guide column and rotationally connected with the guide column, side connecting columns are hinged to the front face and the back face of the base, arc-shaped springs are installed between the inner side faces of the side connecting columns and the top of the base, the side connecting columns and the top of the base are connected, and the tops of the side connecting columns are attached to the bottoms of the clamping fingers. According to the combined type pneumatic clamp, after the limiting columns of the blade are inserted into the limiting holes, the side connecting columns incline towards the two sides on the base under the action of the arc-shaped springs and are tightly attached to the bottoms of the clamping fingers, and by adopting the mode, the clamping fingers conduct quick disassembly and assembly operation.

Description

Technical Field

[0001] The utility model relates to the technical field of pneumatic clamps, in particular to a combined pneumatic clamp. Background Art

[0002] Pneumatic clamps are powerful tools that combine manual clamps with automatic components (cylinders). Most of its models are equipped with magnetic piston rings. After connecting to the pressure source, the position is sensed by the sensor to achieve accurate positioning and fast clamping of the product. The clamping method of pneumatic clamps is cylinder pressing, which is more convenient and labor-saving. The basic design and operation method of pneumatic clamps are the same as those of manual clamps, but they are pneumatically operated. It is a clamp that clamps and positions the workpiece through the pressure of compressed air. It is suitable for mass production and situations where the workstation needs to be fixed and clamped quickly and accurately.

[0003] Common pneumatic clamps are usually composed of structures such as clamp fingers, air circuit connection parts, vacuum systems, drive components and control components. Connect the air source, adjust the distance between the pneumatic clamp fingers, adjust the working air pressure with the pressure regulating valve, place the workpiece between the pneumatic clamp fingers, and start the pneumatic clamp to close the fingers. This is a common pneumatic clamp structure and usage method. After long-term use, the cutting edge of traditional pneumatic clamps is prone to wear problems such as forging and notches. The existing pneumatic clamp blades and the clamp body are integrally formed, and it is easy to cause a waste of resources if they are directly discarded. For example, patent number CN217833312U is a combined pneumatic clamp. Through the split design of the blade and the clamp body, when the blade is damaged, the blade can be directly replaced without replacing the entire clamp. However, this method is achieved through the blade, the knife groove and the screws on the clamp body. When replacing the blade, special tools are needed to disassemble and assemble the screws, which is inconvenient to use and cannot achieve quick disassembly and assembly of the blade. Therefore, a combined pneumatic clamp is proposed. Utility Model Content

[0004] 1. Technical issues to be solved

[0005] In view of the shortcomings of the prior art, the utility model provides a combined pneumatic clamp to solve the technical problem that the blade cannot be quickly disassembled and assembled.

[0006] (II) Technical solution

[0007] In order to achieve the above-mentioned purpose, the utility model provides the following technical solution: a combined pneumatic clamp, comprising:

[0008] A clamp body, and clamp fingers arranged on the upper parts of both sides of the clamp body, and a limiting hole is provided at the center of one side of the top of the clamp fingers;

[0009] The blade is arranged at the top of the clamp finger, and a limiting column is installed on one side of the bottom of the blade and inserted into the inside of the limiting hole, and a guide column is inserted at the bottom of the limiting column;

[0010] The base is arranged at the bottom of the guide column and is rotatably connected to the guide column, and the front and back sides of the base are both hinged with side connecting columns, and an arc spring is installed between the inner side of the side connecting column and the top of the base, and they are connected to each other, and the top of the side connecting column is tightly fitted with the bottom of the clamping finger. After the limiting column of the blade is inserted into the inside of the limiting hole, the clamping finger fits with the blade, and after the side connecting column passes through the bottom end of the limiting hole, under the action of the arc spring, the side connecting column tilts to both sides on the base and fits tightly with the bottom of the clamping finger. On the one hand, the clamping finger can be quickly disassembled and assembled, which is convenient for use; on the other hand, the base can be rotated at the bottom end of the guide column, so that the side connecting column and the limiting hole are misaligned, which ensures the stability of the connection between the clamping finger and the blade and avoids separation.

[0011] Preferably, the top of the limit column is inserted into the top of the inner cavity of the guide column and connected to the limit plate, and the limit plate is tightly fitted with the inner wall of the guide column. The limit column can drive the limit plate to move up and down along the inner wall of the guide column.

[0012] Preferably, the outer surface of the limit column is sleeved with a return spring, and the top and bottom ends of the return spring are respectively tightly fitted with the bottom of the limit plate and the bottom of the inner cavity of the guide column. Under the action of the return spring, the limit plate and the top of the inner cavity of the guide column are tightly fitted, thereby ensuring the connection stability between the side connecting column and the clamping finger.

[0013] Preferably, the top front and rear ends of the clamping fingers are longitudinally provided with slide grooves, and the front and rear ends of the inner cavity of the slide grooves are transversely provided with telescopic rods, and the telescopic ends of the telescopic rods are sleeved with extrusion springs. The telescopic ends of the telescopic rods are kept in an extended state under the action of the extrusion springs.

[0014] Preferably, the telescopic ends of the telescopic rods are equipped with positioning plates, which fit the inner wall of the chute, and the tops of the positioning plates are equipped with guide blocks. The positioning plates drive the positioning plates and the guide blocks to translate along the inner wall of the chute under the action of the telescopic rods and the extrusion springs.

[0015] Preferably, the guide block is located at the top of the slide slot, and a positioning head is installed at the center of the inner side of the guide block, and the positioning head is inserted and connected with the blade. Driven by the positioning plate, the guide block inserts the positioning head into the other side of the blade, thereby stably connecting the blade on the clamp finger and facilitating the disassembly and assembly operation.

[0016] (III) Beneficial effects

[0017] Compared with the prior art, the utility model provides a combined pneumatic clamp, which has the following beneficial effects:

[0018] The combined pneumatic clamp is configured such that after the limiting column of the blade is inserted into the limiting hole, the clamping fingers fit with the blade, and after the side connecting column passes through the bottom end of the limiting hole, under the action of the arc spring, the side connecting column tilts to both sides on the base and fits tightly with the bottom of the clamping fingers. In this way, on the one hand, the clamping fingers can be quickly disassembled and assembled, which is convenient for use; on the other hand, the base can be rotated at the bottom end of the guide column, so that the side connecting column and the limiting hole are misaligned, thereby ensuring the stability of the connection between the clamping fingers and the blade and avoiding separation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the finger clamping structure of the utility model;

[0021] Figure 3 This is a schematic diagram of the cross-sectional structure of the blade and the limiting column of the utility model;

[0022] Figure 4 This is a schematic diagram of the guide column and its connection structure of the utility model;

[0023] Figure 5 This is a schematic diagram of the connection structure between the blade and the positioning head of the utility model.

[0024] In the figure: 1. Clamp body; 2. Clamp finger; 3. Limit hole; 4. Blade; 5. Limit column; 6. Guide column; 7. Limit plate; 8. Reset spring; 9. Base; 10. Side connecting column; 11. Arc spring; 12. Slide groove; 13. Telescopic rod; 14. Extrusion spring; 15. Positioning plate; 16. Guide block; 17. Positioning head. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] The utility model provides a technical solution, a combined pneumatic clamp, comprising: Figure 1 , Figure 2 , a clamp body 1, and clamp fingers 2 arranged on the upper parts of both sides of the clamp body 1, and a limiting hole 3 is provided at the center of one side of the top of the clamp fingers 2;

[0027] See also Figure 3 The blade 4 is arranged at the top of the clamp finger 2, and a limiting column 5 is installed on one side of the bottom of the blade 4 and inserted into the inside of the limiting hole 3, and a guide column 6 is inserted at the bottom of the limiting column 5;

[0028] The base 9 is arranged at the bottom of the guide column 6 and is rotatably connected with the guide column 6. The front and back sides of the base 9 are both hinged with side connecting columns 10. An arc spring 11 is installed between the inner side of the side connecting column 10 and the top of the base 9 and is connected to each other. The top of the side connecting column 10 is tightly fitted with the bottom of the clamping finger 2. After the limiting column 5 of the blade 4 is inserted into the inside of the limiting hole 3, the clamping finger 2 is fitted with the blade 4. After the side connecting column 10 passes through the bottom end of the limiting hole 3, under the action of the arc spring 11, the side connecting column 10 tilts to both sides on the base 9 and is tightly fitted with the bottom of the clamping finger 2. On the one hand, the clamping finger 2 can be quickly disassembled and assembled, which is convenient for use; on the other hand, the base 9 can be rotated at the bottom end of the guide column 6, so that the side connecting column 10 and the limiting hole 3 are misaligned, which ensures the stability of the connection between the clamping finger 2 and the blade 4 and avoids separation.

[0029] See also Figure 4 The top end of the limit column 5 is inserted into the top of the inner cavity of the guide column 6, and is connected to the limit plate 7, and the limit plate 7 is tightly fitted with the inner wall of the guide column 6. The limit column 5 can drive the limit plate 7 to move up and down along the inner wall of the guide column 6. The outer surface of the limit column 5 is sleeved with a reset spring 8, and the top and bottom ends of the reset spring 8 are tightly fitted with the bottom of the limit plate 7 and the bottom of the inner cavity of the guide column 6 respectively. Under the action of the reset spring 8, the limit plate 7 is tightly fitted with the top of the inner cavity of the guide column 6, thereby ensuring the connection stability between the side connecting column 10 and the clamping finger 2.

[0030] See also Figure 2 The front and rear ends of the top of the clamping finger 2 are longitudinally provided with a slide groove 12, and the front and rear ends of the inner cavity of the slide groove 12 are transversely installed with a telescopic rod 13, and a compression spring 14 is sleeved on the telescopic end of the telescopic rod 13. Under the action of the compression spring 14, the telescopic end of the telescopic rod 13 remains in an extended state.

[0031] See also Figure 5, the telescopic ends of the telescopic rods 13 are all equipped with positioning plates 15, which fit with the inner wall of the slide slot 12, and the tops of the positioning plates 15 are all equipped with guide blocks 16. Under the action of the telescopic rods 13 and the extrusion springs 14, the positioning plates 15 drive the positioning plates 15 and the guide blocks 16 to translate along the inner wall of the slide slot 12. The guide blocks 16 are located at the top of the slide slot 12, and the center of the inner side surfaces of the guide blocks 16 are all equipped with positioning heads 17, which are inserted and connected with the blades 4. Driven by the positioning plates 15, the positioning heads 17 of the guide blocks 16 are inserted into the other side of the blades 4, so as to stably connect the blades 4 on the clamping fingers 2 and facilitate the disassembly and assembly operations.

[0032] This solution: After the limiting column 5 of the blade 4 is inserted into the limiting hole 3, the clamping finger 2 fits with the blade 4, and after the side connecting column 10 passes through the bottom end of the limiting hole 3, under the action of the arc spring 11, the side connecting column 10 tilts to both sides on the base 9 and fits tightly with the bottom of the clamping finger 2. Under the action of the reset spring 8, the limiting plate 7 and the top of the inner cavity of the guide column 6 fit tightly, and the side connecting column 10 fits tightly with the clamping finger 2. Under the action of the telescopic rod 13 and the extrusion spring 14, the positioning plate 15 drives the positioning plate 15 and the guide block 16 to translate along the inner wall of the slide groove 12. Driven by the positioning plate 15, the guide block 16 inserts the positioning head 17 into the other side of the blade 4.

[0033] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A combined pneumatic clamp, characterized in that: include: A clamp body (1), and clamp fingers (2) arranged on the upper parts of both sides of the clamp body (1), and a limiting hole (3) is provided at the center of one side of the top of the clamp fingers (2); A blade (4) is arranged on the top of the clamping finger (2), and a limiting column (5) is installed on one side of the bottom of the blade (4) and inserted into the inside of the limiting hole (3), and a guide column (6) is inserted at the bottom of each limiting column (5); The base (9) is arranged at the bottom of the guide column (6) and is rotatably connected to the guide column (6), and the front and back sides of the base (9) are hinged with side connecting columns (10), and an arc spring (11) is installed between the inner side surface of the side connecting column (10) and the top of the base (9), and they are connected to each other, and the top of the side connecting column (10) is tightly fitted with the bottom of the clamping finger (2).

2. A combined pneumatic clamp according to claim 1, characterized in that: The top end of the limiting column (5) is inserted into the top of the inner cavity of the guide column (6) and is connected to the limiting plate (7), and the limiting plate (7) is tightly fitted to the inner wall of the guide column (6).

3. A combined pneumatic clamp according to claim 1, characterized in that: The outer surface of the limiting column (5) is sleeved with a return spring (8), and the top and bottom ends of the return spring (8) are tightly fitted with the bottom of the limiting plate (7) and the bottom of the inner cavity of the guide column (6) respectively.

4. A combined pneumatic clamp according to claim 1, characterized in that: The front and rear ends of the top of the clamping finger (2) are longitudinally provided with a slide groove (12), and the front and rear ends of the inner cavity of the slide groove (12) are transversely installed with a telescopic rod (13), and the telescopic end of the telescopic rod (13) is sleeved with an extrusion spring (14).

5. A combined pneumatic clamp according to claim 4, characterized in that: The telescopic ends of the telescopic rods (13) are each installed with a positioning plate (15) and fit with the inner wall of the slide groove (12), and the top of the positioning plate (15) is each installed with a guide block (16).

6. A combined pneumatic clamp according to claim 5, characterized in that: The guide block (16) is located at the top end of the slide groove (12), and a positioning head (17) is installed at the center of the inner side surface of the guide block (16), and the positioning head (17) is inserted and connected with the blade (4).

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