Pneumatic chuck

Abstract

The utility model relates to the field of pneumatic chucks, in particular to a pneumatic chuck which comprises a chuck assembly, a plurality of front-clamping double-roller clamping jaw assemblies are arranged in the chuck assembly, a traditional chuck is designed into the pneumatic chuck, and therefore compared with traditional gear transmission, a first air cylinder set and a second air cylinder set achieve direct pushing of clamping jaw supports through air cylinders, and the clamping jaw supports are driven by the first air cylinder set and the second air cylinder set. The problem of air leakage of the air cylinder caused by long-term lateral force applied to the piston rod of the air cylinder in the moving process is avoided, the thrust loss of the air cylinder caused by transmission efficiency in the moving process is avoided, the clamping force of the clamping jaws is enhanced, and compared with a traditional chuck, the chuck is not prone to being affected by dust and abraded, so that the machining precision is effectively improved, and the machining cost is reduced. And the arranged synchronous plate and the arranged clamping jaw support can effectively guarantee the synchronism of the front clamping double-roller clamping jaw assembly in the clamping process, the arranged first dustproof baffle and the arranged second dustproof baffle can effectively prevent dust from entering the chuck assembly, and the dustproof effect is achieved.

Description

Technical Field

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

[0002] A pneumatic chuck is a device powered by air pressure, primarily used to simplify installation and reduce equipment costs. It uses air pressure to rotate the chuck, achieving clamping. It is widely used in CNC lathes, grinders, machining centers, and in retrofitting traditional lathes for automation.

[0003] Professional laser tube cutting machines or integrated tube and plate cutting machines are widely used when processing tubes and profiles made of various metal materials. Customers are very concerned about the stability and reliability of the clamping force, workpiece processing accuracy, and full-stroke clamping during tube processing. Traditional chucks use a servo motor, reducer, driving gear, and passive gear for transmission. The reducer, driving gear, and passive gear are installed on different supports, and the meshing backlash needs to be adjusted. During the processing, the meshing backlash of the driving and passive gears changes due to vibration, resulting in a loss of processing accuracy. At the same time, cutting the gears in a dusty and unlubricated environment can cause premature wear and loss of precision, thus affecting the processing accuracy of the workpiece. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a pneumatic chuck.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A pneumatic chuck comprises a chuck assembly, a bearing seat is provided on one side of the chuck assembly, a plurality of front-clamping double-roller claw assemblies are provided in the chuck assembly, the chuck assembly comprises a base plate, a sliding seat is symmetrically provided on the base plate, a synchronization plate is slidably provided on the sliding seat, a cylinder mounting plate is provided above the synchronization plate, a first cylinder group () is provided on the cylinder mounting plate, a linear rail mounting seat is symmetrically provided on one side of the sliding seat on the upper surface of the base plate, a second cylinder group is provided on the linear rail mounting seat, a claw support is connected to the piston rods of the front output ends of the first cylinder group and the second cylinder group, and the front-clamping double-roller claw assembly is installed on the claw support.

[0007] In addition, the preferred structure is that the front clamping double roller clamping claw assembly includes a short roller and a long roller, the short roller is provided with a first clamping claw side ear on both sides, the long roller is provided with a second clamping claw side ear on both sides, and the first clamping claw side ear and the second clamping claw side ear are installed on the clamping claw support.

[0008] In addition, a preferred structure is that a dustproof shield is provided on the side of the upper surface of the base plate, and a roller protection plate is provided on the upper surface of the dustproof shield.

[0009] In addition, a preferred structure is that limiting grooves are symmetrically provided on the synchronization plate, and a mounting groove is provided in the middle of the surface of one side of the synchronization plate.

[0010] In addition, the preferred structure is that cylinder supports are symmetrically arranged on both sides of the synchronization plate on the upper surface of the base plate, a first guide shaft is arranged at the top between the cylinder supports on both sides of the second cylinder group, and a second long guide shaft is arranged at the bottom of the first guide shaft between the cylinder supports on both sides of the first cylinder group.

[0011] In addition, a preferred structure is that a single-rod bearing is symmetrically provided on one side surface of the end heads on both sides of the claw support, and the single-rod bearing is provided to slide in the limiting groove.

[0012] In addition, a preferred structure is that bearings are provided at the ends of both sides of the claw support, and the first long guide shaft and the second long guide shaft are both provided at the inner ring of the bearing.

[0013] In addition, a preferred structure is that a first dustproof baffle is provided on the upper surface of the bottom plate in front of the first cylinder group, and a second dustproof baffle is provided in front of the second cylinder group.

[0014] In addition, the preferred structure is that accordion protective covers are provided on both side edges of the front surfaces of the first dustproof baffle and the second dustproof baffle, and long dustproof baffles are installed on both side edges of the first dustproof baffle and the second dustproof baffle.

[0015] The beneficial effects of the present invention are as follows: the present invention designs the traditional chuck as a pneumatic chuck, so compared with the traditional gear transmission, the first cylinder group and the second cylinder group realize the direct push of the cylinder claw support, which avoids the problem of cylinder leakage caused by the cylinder piston rod being subjected to long-term lateral force during movement, and avoids the loss of cylinder thrust due to transmission efficiency during movement, thereby enhancing the clamping force of the claw, and compared with the traditional chuck, it is not easily affected by dust and wear, thereby effectively improving the processing accuracy, and the set synchronization plate and claw support can effectively ensure the synchronization of the front clamping double roller claw assembly during clamping, and the set first dust baffle and second dust baffle can effectively prevent dust from entering the interior of the chuck assembly, playing a dust-proof role. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the pneumatic chuck;

[0017] Figure 2 This is a schematic diagram of the structure after the bearing seat and chuck assembly are disassembled;

[0018] Figure 3 This is a schematic diagram of the structure after the dust cover and roller protection plate are separated;

[0019] Figure 4 Schematic diagram of the internal structure of the chuck assembly Figure 1 ;

[0020] Figure 5 This is a schematic diagram of the structure after the front card double roller claw assembly and the claw support are disassembled;

[0021] Figure 6 Schematic diagram of the internal structure of the chuck assembly Figure 2 ;

[0022] Figure 7 Schematic diagram of the internal structure of the chuck assembly Figure 3 ;

[0023] Figure 8 Schematic diagram of the structure of the first long guide shaft and the second long guide shaft;

[0024] Figure 9 It is a structural diagram of the synchronization board;

[0025] Figure 10 Schematic diagram of the structure of the claw support;

[0026] Figure 11 Schematic diagram of the structure of the first cylinder group and the second cylinder group;

[0027] Figure 12 It is a structural diagram of the front card double roller claw assembly.

[0028] In the figure: 01 bearing seat, 02 chuck assembly, 03 front clamping double roller claw assembly, 031 short roller, 032 long roller, 033 first claw side ear, 034 second claw side ear, 1 base plate, 2 dust cover, 3 roller protection plate, 4 first cylinder group, 5 second cylinder group, 6 synchronization plate, 61 limit slot, 62 mounting slot, 7 cylinder support, 8 cylinder mounting plate, 9 claw support, 91 bearing, 92 single rod bearing, 10 first dust baffle, 11 accordion protective cover, 12 linear rail mounting seat, 13 first long guide shaft, 14 second long guide shaft, 15 sliding seat, 16 guide shaft mounting block, 17 second dust baffle, 18 long dust baffle. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0030] Reference Figure 1-12A pneumatic chuck includes a chuck assembly 02, a bearing seat 01 is provided on one side of the chuck assembly 02, and a plurality of front clamping double roller claw assemblies 03 are provided in the chuck assembly 02, the chuck assembly 02 includes a base plate 1, a sliding seat 15 is symmetrically provided on the base plate 1, a synchronization plate 6 is slidingly provided on the sliding seat 15, a cylinder mounting plate 8 is provided above the synchronization plate 6, and a first cylinder group 4 is provided on the cylinder mounting plate 8), a linear rail mounting seat 12 is symmetrically provided on one side of the sliding seat 15 on the upper surface of the base plate 1, and a second cylinder group 5 is provided on the linear rail mounting seat 12, and a claw support 9 is connected to the piston rod of the front output end of the first cylinder group 4 and the second cylinder group 5. The front clamping double roller claw assembly 03 is installed on the claw support 9, and the first cylinder group 4 and the second cylinder group 5 push the claw support 9, and cooperate with four synchronization plates 6 to realize the synchronous clamping of the front clamping double roller claw assemblies 03 in four directions.

[0031] Moreover, the front clamping double roller clamping claw assembly 03 includes a short roller 031 and a long roller 032. The short roller 031 is provided with a first clamping claw side ear 033 on both sides, and the long roller 032 is provided with a second clamping claw side ear 034 on both sides. The first clamping claw side ear 033 and the second clamping claw side ear 034 are installed on the clamping claw support 9. The short roller 031 and the long roller 032 increase the contact area during clamping, making the clamping more secure.

[0032] In addition, a dustproof shield 2 is provided on the side of the upper surface of the base plate 1, and a roller protection plate 3 is provided on the upper surface of the dustproof shield 2. The roller protection plate 3 can effectively play a protective role, thereby effectively preventing a large amount of dust from falling onto the front card double roller claw assembly 03, preventing it from affecting the processing accuracy.

[0033] At the same time, limiting grooves 61 are symmetrically provided on the synchronization plate 6 , and a mounting groove 62 is provided in the middle of the surface of one side of the synchronization plate 6 . The limiting groove 61 can play a role in limiting the claw support 9 .

[0034] Moreover, cylinder supports 7 are symmetrically arranged on both sides of the synchronization plate 6 on the upper surface of the base plate 1, and a first guide shaft 13 is arranged at the top between the cylinder supports 7 on both sides of the second cylinder group 5. The cylinder supports 7 on both sides of the first cylinder group 4 are located at the bottom of the first guide shaft 13 and a second long guide shaft 14 is arranged. The first guide shaft 13 and the second guide shaft 14 facilitate the sliding of the claw support 9 on them.

[0035] At the same time, a single-rod bearing 92 is symmetrically arranged on the surface of one side of the end of each side of the claw support 9, and the single-rod bearing 92 is arranged to slide in the limit groove 61. Bearings 91 are arranged at the end of each side of the claw support 9, and the first long guide shaft 13 and the second long guide shaft 14 are both arranged at the inner ring of the bearing 91. The single-rod bearing 92 is arranged to slide in the limit groove 61, so that the relative claw supports 9 can move synchronously.

[0036] Moreover, a first dust baffle 10 is provided on the upper surface of the base plate 1 in front of the first cylinder group 4, and a second dust baffle 17 is provided in front of the second cylinder group 5. Accordion protective covers 11 are provided on both side edges of the front surfaces of the first dust baffle 10 and the second dust baffle 17, and long dust baffles 18 are installed on both side edges of the first dust baffle 10 and the second dust baffle 17. The long dust baffle 18 and the accordion protective cover 11 can effectively protect and prevent dust.

[0037] In this embodiment, when the pneumatic chuck is clamped, clamping is performed through the front clamping double roller claw assembly 03. First, the first cylinder group 4 and the second cylinder group 5 are driven synchronously. When the piston rods of the first cylinder group 4 and the second cylinder group 5 are extended, they can drive the front side claw support 9 to move, and the claw supports 9 are both set on the first long guide shaft 13 and the second long guide shaft 14 for linear movement. This improves the synchronous clamping accuracy of the claws, saves internal layout space, reduces the overall thickness, and reduces the chuck mass and moment of inertia.

[0038] Moreover, when the claw support 9 moves, the single-rod bearings 92 on both sides are located in the limiting groove 61, so that the claw supports 9 opposite to each other on the same plane can ensure synchronization when moving, thereby ensuring the synchronization of clamping of the front double-roller claw assembly 03.

[0039] Moreover, the installed dust shield 2, roller protection plate 3, first dust shield 10, second dust shield 17, accordion protection cover 11, and long dust shield 18 all play an effective dust-proof role, preventing a large amount of dust from falling into the interior of the chuck assembly 02 during clamping, thereby causing early wear and loss of precision of each part, thereby affecting the processing accuracy of the workpiece.

[0040] In the present invention, the traditional chuck is designed as a pneumatic chuck. Compared with the traditional gear transmission, the first cylinder group 4 and the second cylinder group 5 realize the direct push of the cylinder to the claw support 9, which avoids the problem of cylinder leakage caused by the long-term lateral force on the cylinder piston rod during movement, and avoids the loss of cylinder thrust due to transmission efficiency during movement, thereby enhancing the clamping force of the claw. Compared with the traditional chuck, it is not easily affected by dust and wear, thereby effectively improving the processing accuracy. Moreover, the set synchronization plate 6 and the claw support 9 can effectively ensure the synchronization of the front clamping double roller claw assembly 03 during clamping, and the set first dust baffle 10 and the second dust baffle 17 can effectively prevent dust from entering the interior of the chuck assembly 02, thereby playing a dust-proof role.

[0041] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A pneumatic chuck, comprising a chuck assembly (02), wherein a bearing seat (01) is provided on one side of the chuck assembly (02), and a plurality of front clamping double roller claw assemblies (03) are provided in the chuck assembly (02), characterized in that: The chuck assembly (02) comprises a base plate (1), a sliding seat (15) is symmetrically arranged on the base plate (1), a synchronous plate (6) is slidably arranged on the sliding seat (15), a cylinder mounting plate (8) is arranged above the synchronous plate (6), a first cylinder group (4) is arranged on the cylinder mounting plate (8), a linear rail mounting seat (12) is symmetrically arranged on one side of the sliding seat (15) on the upper surface of the base plate (1), a second cylinder group (5) is arranged on the linear rail mounting seat (12), a claw support (9) is connected to the piston rods at the front output ends of the first cylinder group (4) and the second cylinder group (5), and the front double roller claw assembly (03) is mounted on the claw support (9).

2. A pneumatic chuck according to claim 1, characterized in that: The front clamping double roller clamping claw assembly (03) comprises a short roller (031) and a long roller (032), first clamping claw side ears (033) are provided on both sides of the short roller (031), and second clamping claw side ears (034) are provided on both sides of the long roller (032), and the first clamping claw side ears (033) and the second clamping claw side ears (034) are mounted on a clamping claw support (9).

3. The pneumatic chuck according to claim 1, characterized in that: A dustproof shield (2) is provided on the side of the upper surface of the bottom plate (1), and a roller protection plate (3) is provided on the upper surface of the dustproof shield (2).

4. The pneumatic chuck according to claim 1, characterized in that: The synchronizing plate (6) is symmetrically provided with limiting grooves (61), and a mounting groove (62) is provided in the middle of a surface of one side of the synchronizing plate (6).

5. The pneumatic chuck according to claim 1, characterized in that: Cylinder supports (7) are symmetrically arranged on both sides of the synchronization plate (6) on the upper surface of the base plate (1), a first long guide shaft (13) is arranged at the top between the cylinder supports (7) on both sides of the second cylinder group (5), and a second long guide shaft (14) is arranged at the bottom of the first long guide shaft (13) between the cylinder supports (7) on both sides of the first cylinder group (4).

6. The pneumatic chuck according to claim 1, characterized in that: A single-rod bearing (92) is symmetrically provided on one side surface of the end portions of both sides of the claw support (9), and the single-rod bearing (92) is provided to slide on the limiting groove (61).

7. The pneumatic chuck according to claim 6, characterized in that: Bearings (91) are provided at the ends of both sides of the claw support (9), and the first long guide shaft (13) and the second long guide shaft (14) are both provided at the inner ring of the bearing (91).

8. The pneumatic chuck according to claim 1, characterized in that: A first dustproof baffle (10) is provided on the upper surface of the bottom plate (1) in front of the first cylinder group (4), and a second dustproof baffle (17) is provided in front of the second cylinder group (5).

9. The pneumatic chuck according to claim 8, characterized in that: Organ shields (11) are provided on both sides of the front surfaces of the first dustproof baffle (10) and the second dustproof baffle (17), and long dustproof baffles (18) are installed on both sides of the first dustproof baffle (10) and the second dustproof baffle (17).

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