A rear through-hole pneumatic chuck for laser cutting machines

Abstract

The invention discloses a pneumatic chuck with a rear through hole for a laser cutting machine. A mounting seat is provided on the chuck. A bayonet is provided in the middle of the chuck and the mounting seat. A clamping jaw is provided on the outer side of the bayonet. The clamping jaw is connected with a linkage structure. The pneumatic chuck with a rear through hole for a laser cutting machine adopting the invention has the advantages of simple structure, high reliability, small size and easy layout.

Description

Technical Field

[0001] The invention belongs to the technical field of mechanical processing, and in particular to a pneumatic chuck with a rear through hole for a laser cutting machine. Background Art

[0002] Currently, the chuck structures are complex in design and use a large number of parts, which inevitably leads to the parts being placed outside the chuck. These parts are easily affected by the external environment and their service life is reduced. The reliability is low, and the chucks with complex structures are often large in size and heavy in weight. They require other auxiliary support structures to maintain their position, resulting in a small application range and difficulty in arranging them on the production line.

[0003] The utility model patent with publication number CN205869728U was published on January 11, 2017. It is named a laser cutting machine with a replaceable platform, including a bracket, a guide rail installed on the bracket, and a laser cutting head assembly running on the guide rail, wherein a workbench is installed on the bracket, and a through groove in the direction of the guide rail is opened on the front and rear sides of the bracket to support the workbench, and positioning blocks are installed at both ends of the through groove through detachable connectors; the front and rear sides of the workbench have a plate-shaped structure supported by the corresponding side through grooves, and the head end and the tail end are limited by the positioning blocks at the corresponding ends; wherein a workpiece positioning structure is installed on the workbench. This laser cutting machine also cannot solve the technical problems recorded above. Summary of the invention

[0004] The purpose of the present invention is to provide a pneumatic chuck for a laser cutting machine with a rear through hole, which has a simple structure, high reliability, small size and is easy to arrange, in view of the deficiencies in the prior art.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is:

[0006] The laser cutting machine has a rear through-hole pneumatic chuck, a mounting seat is provided on the chuck, a bayonet is provided in the middle of the chuck and the mounting seat, a clamping claw is provided on the outer side of the bayonet, and the clamping claw is connected with a linkage structure.

[0007] The linkage structure includes a connecting plate, and the claw is connected to the middle part of the connecting plate; a cylinder is provided on the side of the mounting seat, a guide rail is provided on the cylinder, and sliders are provided at both ends of the guide rail, the sliders are connected to the cylinder, and the sliders cooperate with the guide rails; the connecting plate is a U-shaped structure, and the end of the connecting plate is fixedly connected to the slider.

[0008] The clamping claw comprises a clamping block and a connecting seat, a mounting hole is provided on the connecting seat, and the clamping block and the connecting seat are arranged in an L shape.

[0009] There are four clamping claws, and the four clamping claws are arranged at equal intervals along the circumferential direction.

[0010] A reinforcing rib is provided in the middle of the clamping claw, a clamping block is provided on the reinforcing rib, and mounting grooves are provided on the clamping block and the mounting seat, and the clamping block cooperates with the mounting groove.

[0011] A protective cover is arranged outside the chuck, the mounting seat, the connecting plate, the cylinder and the sliding block are all located inside the protective cover, and the clamping claws extend out from the protective cover.

[0012] The mounting seat is formed by bending a sheet metal, and fixing holes are evenly distributed on the mounting seat.

[0013] An elastic bracket is provided at the bottom of the cylinder, mounting blocks are provided at both ends of the elastic bracket, and a bending edge is provided in the middle of the elastic bracket.

[0014] A slewing bearing is fixedly connected to the chuck.

[0015] The technical effects of the present invention are as follows: the rear through-hole pneumatic chuck of the laser cutting machine of the present invention is adopted, and the spacing adjustment of the clamping claws is realized by driving the slider and the connecting plate through the cylinder, so as to realize the clamping demand of the workpiece, and the linkage effect of the connecting plate makes the sliders on the opposite side of the mounting seat run synchronously, so as to ensure the position accuracy of the clamping claws; the components in the chuck are integrated and installed on one side of the chuck, and under the protection of the protective cover, the influence of external environmental factors on the service life of the components is avoided, the number of components used is reduced, the overall volume of the chuck is reduced, and the use of other auxiliary support structures is omitted, which can meet the installation and use of the production line and improve the production efficiency. There are few types of components in the chuck, with a universal design, simple structure, convenient maintenance and replacement, and low cost of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] This specification includes the following drawings, which show the following contents:

[0017] Figure 1 It is a structural schematic diagram of a rear through-hole pneumatic chuck of a laser cutting machine of the present invention;

[0018] Figure 2 It is a structural schematic diagram of removing the protective cover of the rear through-hole pneumatic chuck of the laser cutting machine of the present invention;

[0019] Figure 3 It is a schematic diagram of the connection between the slider and the connecting plate of the present invention;

[0020] Figure 4 It is a schematic diagram of the connection between the clamping jaw and the connecting plate of the present invention;

[0021] Figure 5 is a schematic structural diagram of the mounting base of the present invention;

[0022] Figure 6 It is a schematic structural diagram of the reinforcing rib of the present invention;

[0023] Figure 7 It is a schematic structural diagram of the elastic bracket of the present invention.

[0024] The markings in the figure are: 1. chuck; 2. mounting seat; 3. slewing bearing; 4. bayonet; 5. claw; 6. clamping block; 7. connecting seat; 8. protective cover; 9. cylinder; 10. guide rail; 11. slider; 12. connecting plate; 13. reinforcing rib; 14. clamping block; 15. mounting groove; 16. mounting hole; 17. fixing hole; 18. elastic bracket; 19. mounting block; 20. bending edge. DETAILED DESCRIPTION

[0025] The specific implementation methods of the present invention are further explained in detail below by describing the embodiments with reference to the accompanying drawings, with the aim of helping those skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of the present invention and facilitating their implementation.

[0026] like Figures 1 to 7 As shown, the laser cutting machine has a rear through-hole pneumatic chuck, a mounting seat 2 is provided on the chuck 1, a bayonet 4 is provided in the middle of the chuck 1 and the mounting seat 2, a clamping claw 5 is provided on the outside of the bayonet 4, and the clamping claw 5 is connected with a linkage structure. The bayonet 4 runs through the chuck 1, the mounting seat 2 and the protective cover 8, so that the profile or pipe fitting can be directly clamped and cut after passing through the bayonet 4, which is suitable for the spatial layout and production requirements of the assembly line; the clamping claw 5 is relatively arranged on one side of the mounting seat 2 to provide a stable clamping effect for the profile or pipe fitting, and the cylinder 9 is installed on the side of the mounting seat 2, and the clamping claw 5 is driven to move through the slider 11 and the connecting plate 12, thereby reducing the space occupied by the cylinder 9 and reducing the volume of the chuck 1.

[0027] like Figure 2 and Figure 3As shown, the linkage structure includes a connecting plate 12, and the claw 5 is connected to the middle of the connecting plate 12; a cylinder 9 is provided on the side of the mounting seat 2, and a guide rail 10 is provided on the cylinder 9, and sliders 11 are provided at both ends of the guide rail 10, and the sliders 11 are connected to the cylinder 9, and the sliders 11 cooperate with the guide rail 10; the connecting plate 12 is a U-shaped structure, and the ends of the connecting plate 12 are fixedly connected to the sliders 11. In the above structure, the cylinder 9 is a double-slider rodless cylinder, and the two ends of the U-shaped connecting plate 12 are respectively connected to the sliders 11 on both sides of the mounting seat 2, so that the sliders 11 on the opposite sides of the mounting seat 2 are connected, and under the linkage effect of the connecting plate 12 on the sliders 11 on the opposite sides of the mounting seat 2, a single cylinder 9 can be used to realize the synchronous relative or opposite movement of the two sliders 11, ensuring the consistency of the movement of the sliders 11 on both sides of the mounting seat 2. At the same time, the volume of the chuck 1 is reduced, which is convenient for arranging the parts inside the protective cover 8 and reducing the interference of the external environment. The connecting plate 12 connected to the pair of sliders 11 on the opposite sides of the mounting seat 2 is arranged on a different plane from the other group of connecting plates 12, thereby avoiding spatial interference. The cylinder 9 drives the slide block 11 to move on the guide rail 10, ensuring the accuracy of the moving direction of the clamping jaw 5, thereby improving the moving accuracy of the clamping jaw position. The clamping jaw spacing is adjustable, so it is suitable for clamping workpieces of various cross-sectional sizes and improves versatility.

[0028] like Figure 4 As shown, the clamping jaw 5 includes a clamping block 6 and a connecting seat 7, and the connecting seat 7 is provided with a mounting hole 16. The clamping block 6 and the connecting seat 7 are arranged in an L shape. The clamping block 6 and the connecting seat 7 are arranged in an L shape, which is conducive to ensuring the verticality of the clamping surface of the clamping block 6, and can be in close contact with the outside of the workpiece, thereby improving the clamping stability. The clamping jaw 5 can be stably mounted on the connecting plate 12 through multiple mounting holes 16. The clamping jaw 5 adopts a detachable connection to facilitate later maintenance.

[0029] like Figures 1 to 3 As shown, there are four clamping jaws 5, and the four clamping jaws 5 are arranged at equal intervals along the circumferential direction. Multiple clamping jaws can provide multi-position constraints on the outer side of the workpiece. The clamping jaws are designed with four, which has a wide range of applications, can contact the four sides of the profile respectively, and have high clamping stability.

[0030] like Figure 6 As shown, a reinforcing rib 13 is provided in the middle of the claw 5, a clamping block 14 is provided on the reinforcing rib 13, and a mounting groove 15 is provided on the clamping block 6 and the mounting seat 2, and the clamping block 14 cooperates with the mounting groove 15. The reinforcing rib 13 is provided to improve the structural strength of the claw 5 and the durability of the claw 5. The reinforcing rib 13 is installed in a clamping manner and is not easy to fall out.

[0031] like Figure 1As shown, a protective cover 8 is provided on the outside of the chuck 1, the mounting seat 2, the connecting plate 12, the cylinder 9 and the slider 11 are all located inside the protective cover 8, and the claw 5 extends from the protective cover 8. The protective cover 8 reliably protects various components on the chuck 1 and can isolate them from the external environment, thereby preventing the above components from being affected by external moisture, dust and other environmental factors, and improving the service life of the components.

[0032] like Figure 5 As shown, the mounting seat 2 is formed by bending a sheet metal, and fixing holes 17 are evenly distributed on the mounting seat 2. The mounting seat 2 is formed by bending a sheet metal, and its interior is a hollow structure, which further reduces the weight of the chuck 1. A plurality of fixing holes 17 are arranged on its bottom and side, and an effective and reliable connection is achieved with the cylinder 9 and the chuck 1.

[0033] like Figure 7 As shown, an elastic bracket 18 is provided at the bottom of the cylinder 9, mounting blocks 19 are provided at both ends of the elastic bracket 18, and a bent edge 20 is provided in the middle of the elastic bracket 18. The elastic bracket 18 is a fastener of the protective cover 8, and structures adapted to the mounting blocks 19 and the bent edge 20 are provided at the bottom and inner side of the protective cover 8, so that the protective cover 8 can be stably installed on the chuck 1.

[0034] like Figures 1 to 3 As shown, a slewing bearing 3 is fixedly connected to the chuck 1. The fixed slewing bearing 3 on the chuck 1 is meshed with the external linkage gear through its external teeth, so the chuck 1 can rotate a certain angle as a whole. When the type of cutting workpiece changes, such as switching from pipe fittings to square profiles, the chuck 1 can use the slewing bearing 3 to rotate the position of the clamping claw 5 to ensure that the clamping claw 5 is tightly clamped with the four outer sides of the square profile to provide a reliable clamping effect.

[0035] The use of the rear through-hole pneumatic chuck of the laser cutting machine is as follows: the cylinder 9 is started to drive the slider 11 on the guide rail 10 to move relatively far away, the clamping jaws are opened, and after the workpiece runs with the conveying mechanism and passes through the bayonet 4, the cylinder 9 is started again to drive the slider 11 on the guide rail 10 to move relatively close, and the four clamping jaws synchronously move radially to clamp the workpiece, and the laser cutting equipment runs to cut the workpiece. During the operation of the above-mentioned cylinder 9, the slider 11 ensures the synchronous operation of the two groups of cylinders 9 on the opposite sides of the mounting seat 2 through the linkage effect of the connecting plate 12.

[0036] The rear through-hole pneumatic chuck of the laser cutting machine drives the slider 11 and the connecting plate 12 through the cylinder 9 to adjust the spacing of the claws 5, realize the clamping requirements of the workpiece, and the linkage effect of the connecting plate 12 makes the slider 11 on the opposite side of the mounting seat 2 run synchronously, ensuring the position accuracy of the claws 5; the components in the chuck 1 are integrated and installed on one side of the chuck 1, and under the protection of the protective cover 8, the influence of external environmental factors on the service life of the components is avoided, the number of components used is reduced, the overall volume of the chuck 1 is reduced, and the use of other auxiliary support structures is omitted, which can meet the installation and use of the production line and improve production efficiency. There are few types of components in the chuck 1, with a universal design, simple structure, convenient maintenance and replacement, and low cost of use.

[0037] The present invention is described above by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-mentioned methods. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention; or the above concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A rear through-hole pneumatic chuck for a laser cutting machine, characterized in that: The chuck (1) is provided with a mounting seat (2), the chuck (1) and the mounting seat (2) are provided with a bayonet (4) in the middle, the bayonet (4) is provided with a clamping claw (5) on the outside, and the clamping claw (5) is connected with a linkage structure.

2. The rear through-hole pneumatic chuck for laser cutting machine according to claim 1, characterized in that: The linkage structure comprises a connecting plate (12), the claw (5) being connected to the middle of the connecting plate (12); a cylinder (9) is provided on the side of the mounting seat (2), a guide rail (10) is provided on the cylinder (9), sliders (11) are provided at both ends of the guide rail (10), the sliders (11) are connected to the cylinder (9), and the sliders (11) cooperate with the guide rails (10); the connecting plate (12) is a U-shaped structure, and the ends of the connecting plate (12) are fixedly connected to the sliders (11).

3. The rear through-hole pneumatic chuck for laser cutting machine according to claim 2, characterized in that: The clamping claw (5) comprises a clamping block (6) and a connecting seat (7); a mounting hole (16) is provided on the connecting seat (7); and the clamping block (6) and the connecting seat (7) are arranged in an L shape.

4. The rear through-hole pneumatic chuck for laser cutting machine according to claim 3, characterized in that: The clamping claws (5) are provided with four, and the four clamping claws (5) are arranged at equal intervals along the circumferential direction.

5. The rear through-hole pneumatic chuck for laser cutting machine according to claim 4, characterized in that: A reinforcing rib (13) is provided in the middle of the clamping claw (5), a clamping block (14) is provided on the reinforcing rib (13), a mounting groove (15) is provided on both the clamping block (6) and the mounting seat (2), and the clamping block (14) cooperates with the mounting groove (15).

6. The rear through-hole pneumatic chuck for laser cutting machine according to claim 5, characterized in that: A protective cover (8) is provided outside the chuck (1); the mounting seat (2), the connecting plate (12), the cylinder (9) and the slider (11) are all located inside the protective cover (8); and the clamping claw (5) extends out from the protective cover (8).

7. The rear through-hole pneumatic chuck for laser cutting machine according to claim 1, characterized in that: The mounting seat (2) is formed by bending a sheet metal, and fixing holes (17) are evenly distributed on the mounting seat (2).

8. The rear through-hole pneumatic chuck for laser cutting machine according to claim 6, characterized in that: An elastic bracket (18) is provided at the bottom of the cylinder (9), mounting blocks (19) are provided at both ends of the elastic bracket (18), and a bending edge (20) is provided in the middle of the elastic bracket (18).

9. The rear through-hole pneumatic chuck for laser cutting machine according to claim 6, characterized in that: A slewing bearing (3) is fixedly connected to the chuck (1).

Images