Workpiece fixing chuck for laser pipe cutting machine

Abstract

The utility model discloses a workpiece fixing chuck for a laser pipe cutting machine, which relates to the technical field of laser pipe cutting machines and comprises a chuck base, a large disc is arranged on the chuck base, a panel is arranged on the front side of the large disc, the large disc is fixedly connected with the panel through a connecting sleeve, and an air cylinder supporting column is fixedly connected between the large disc and the panel. A telescopic air cylinder is rotationally connected to the air cylinder supporting column, the end of a piston rod of the telescopic air cylinder is connected with a push rod, an outer side centering disc and an inner side centering disc are arranged between the panel and the telescopic air cylinder, and two first centering holes and two first guide holes are formed in the outer side centering disc. The telescopic air cylinder is also used as a driving source, the structure is simple, the occupied space is small, a universal air cylinder can be used as the driving source, the use cost of the air cylinder in the chuck is reduced, the air cylinder is easy to maintain and replace, and the maintainability of the chuck is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of laser tube cutting machines, and more specifically, to a workpiece fixing chuck for a laser tube cutting machine. Background Art

[0002] The fixed chuck is a key component of the laser tube cutting machine. It is mainly used to fix and clamp the tube to ensure the accuracy and stability of the cutting process. The fixed chuck is powered by the drive device to move the claws to clamp and release the tube. During the cutting process, the chuck maintains the fixed position of the tube and can drive the tube to rotate or move according to the cutting requirements, cooperating with the laser cutting head to complete the precise cutting of the tube.

[0003] The chuck of the existing technology uses a cylinder as a driving source and realizes the clamping of the claws through complex structures such as toothed rings, gears, and racks. Therefore, in order to adapt to the structure and alignment requirements of the chuck, it is usually necessary to use a non-universal cylinder, which is individually designed and customized. This has high requirements for processing accuracy and complexity, increases the production cost of the chuck, and reduces maintainability. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the utility model provides a workpiece fixing chuck for a laser tube cutting machine to solve the problems that the chuck in the prior art adopts a non-universal cylinder, needs to be individually designed and customized, has high requirements on processing accuracy and complexity, and increases cost and maintainability.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions: a workpiece fixing chuck for a laser tube cutting machine, comprising a chuck base, a large disk is provided on the chuck base, a panel is provided on the front side of the large disk, the large disk is fixedly connected to the panel via a connecting sleeve, a cylinder support is fixedly connected between the large disk and the panel, a telescopic cylinder is rotatably connected to the cylinder support, the piston rod ends of the telescopic cylinder are connected to push rods, an outer centering disk and an inner centering disk are provided between the panel and the telescopic cylinder, two first centering holes and two first guide holes are provided on the outer centering disk, two second centering holes and four second guide holes are provided on the inner centering disk Guide holes, the push rods on the two longitudinal telescopic cylinders are rotatably connected to the outer centering disk, the push rods on the two transverse telescopic cylinders are rotatably connected to the inner centering disk, the cylinder pillars corresponding to the two transverse telescopic cylinders pass through the two first guide holes and the two second guide holes, and the other two cylinder pillars pass through the other two second guide holes, so that the outer centering disk and the inner centering disk can rotate concentrically along the cylinder pillars, and four sliding holes corresponding to the first centering hole and the second centering hole are opened on the panel, and a shifting post is slidably connected in the sliding hole. One end of the shifting post is slidably installed in the corresponding first centering hole and the second centering hole through a bearing, and a clamping claw assembly is provided at the other end.

[0006] Preferably, the four cylinder struts and the four telescopic cylinders are distributed along the circumferential direction of the large disk and are arranged in a centrally symmetrical manner.

[0007] Preferably, the first pair of centering holes, the first guide hole, the second pair of centering holes and the second guide hole are all arranged in centrosymmetry.

[0008] Preferably, the clamping claw assembly includes four slide blocks fixedly mounted on the panel, the slide block is provided with a column hole corresponding to the sliding hole, a slider is slidably mounted in the slide block, the end of the slider away from the outer centering disk is fixedly connected to the shift column, a roller frame is fixedly mounted on the slider, and a clamping roller is rotatably mounted on the roller frame toward the side of the center of the panel.

[0009] Preferably, each roller rack is provided with two layers of clamping rollers, and the clamping rollers in the vertical direction and the clamping rollers in the horizontal direction are staggered.

[0010] Preferably, the roller frame is provided with an auxiliary wheel frame extending toward the front side of the panel, and an auxiliary roller is rotatably mounted on the auxiliary wheel frame, and the auxiliary roller and the corresponding clamping roller are in the same horizontal plane.

[0011] Preferably, a dustproof cylinder is provided on the inner side between the large plate and the panel, and a dustproof cover is provided on the outer side between the large plate and the panel.

[0012] Preferably, a dustproof plate is installed at the tail of the chute block.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] The utility model adopts the arrangement of an outer centering disc and an inner centering disc, and also uses a telescopic cylinder as a driving source. It has a simple structure and occupies a small space. A universal cylinder can be used as a driving source, which reduces the use cost of the cylinder in the chuck, makes the cylinder easy to maintain and replace, and improves the maintainability of the chuck.

[0015] The utility model arranges a roller frame, a clamping roller, an auxiliary wheel frame, and an auxiliary roller, and clamps at the same time through the clamping roller and the auxiliary roller, which is equivalent to clamping at two end points, thereby improving the stability of clamping and reducing the deviation of the workpiece. The clamping rollers and auxiliary rollers in the vertical and horizontal directions are staggered, which can increase the clamping area of ​​the pipe fitting and improve the stability of clamping.

[0016] The utility model can prevent the debris generated by processing from affecting the telescopic cylinder, the outer centering plate and the inner centering plate from the inside and outside through the arrangement of the dustproof tube, the dustproof cover and the dustproof plate, thereby playing a dustproof role and preventing the processing debris from affecting the movement of the slider in the slide block. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0018] Figure 2 This is a top view of the related structures of the roller frame and auxiliary wheel frame of the utility model;

[0019] Figure 3 This is a schematic diagram of the related structures of the cylinder support, telescopic cylinder, outer centering plate, and inner centering plate of the utility model;

[0020] Figure 4 This is a three-dimensional diagram of the structure coordination of the outer centering plate and the inner centering plate of the present invention;

[0021] Figure 5 This is a schematic diagram of the relevant structure on the outer centering disk of the utility model;

[0022] Figure 6 This is a schematic diagram of the relevant structure on the inner centering disc of the utility model;

[0023] Figure 7 This is a schematic diagram of the relevant structure on the panel of the present utility model;

[0024] Figure 8 This is a schematic diagram of the related structures of the slide block, slider, roller frame, and clamping roller of the utility model;

[0025] Figure 9 This is a schematic diagram of the related structure of the slide block and column hole of the utility model.

[0026] [Reference Signs]

[0027] 1. Chuck base; 2. Large plate; 3. Panel; 4. Connecting sleeve; 5. Cylinder support; 6. Telescopic cylinder; 7. Outer centering plate; 8. Inner centering plate; 9. First centering hole; 10. First guide hole; 11. Second centering hole; 12. Second guide hole; 13. Sliding hole; 14. Slide block; 15. Slider; 16. Roller frame; 17. Clamping roller; 18. Auxiliary wheel frame; 19. Auxiliary roller; 20. Dustproof cylinder; 21. Dust cover; 22. Dustproof plate; 23. Post hole; 24. Push rod; 25. Shifting post. DETAILED DESCRIPTION

[0028] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, a detailed description will be given below with reference to the accompanying drawings and specific embodiments.

[0029] As attached Figure 1 To the attached Figure 9 The embodiment of the present utility model provides a workpiece fixing chuck for a laser tube cutting machine, comprising a chuck base 1, a large disk 2 is provided on the chuck base 1, a panel 3 is provided on the front side of the large disk 2, the large disk 2 is fixedly connected to the panel 3 through a connecting sleeve 4, a cylinder support 5 is fixedly connected between the large disk 2 and the panel 3, a telescopic cylinder 6 is rotatably connected to the cylinder support 5, the piston rod ends of the telescopic cylinder 6 are connected to push rods 24, an outer centering disk 7 and an inner centering disk 8 are provided between the panel 3 and the telescopic cylinder 6, two first centering holes 9 and two first guide holes 10 are provided on the outer centering disk 7, two second centering holes 11 and four second guide holes 12 are provided on the inner centering disk 8, and the two longitudinal telescopic cylinders 6 are provided with a plurality of first guide holes 11 and four second guide holes 12. The push rod 24 is rotatably connected to the outer centering disk 7, and the push rods 24 on the two horizontal telescopic cylinders 6 are rotatably connected to the inner centering disk 8. The cylinder struts 5 corresponding to the two horizontal telescopic cylinders 6 pass through the two first guide holes 10 and the two second guide holes 12, and the other two cylinder struts 5 pass through the other two second guide holes 12, so that the outer centering disk 7 and the inner centering disk 8 can rotate concentrically along the cylinder struts 5. Four sliding holes 13 corresponding to the first centering holes 9 and the second centering holes 11 are provided on the panel 3. A shifting post 25 is slidably connected in the sliding hole 13. One end of the shifting post 25 is slidably installed in the corresponding first centering hole 9 and the second centering hole 11 through a bearing, and a clamping claw assembly is provided at the other end.

[0030] Among them, during the extension of the piston rod of the cylinder support 5, it can push the outer centering disk 7 and the inner centering disk 8 to rotate, and the cylinder support 5 plays a guiding and limiting role for the outer centering disk 7 and the inner centering disk 8. Through the setting of the outer centering disk 7 and the inner centering disk 8, the structure is simple and the space occupied is small. A general cylinder can be used as a driving source, which reduces the production cost of the chuck and improves the maintainability of the chuck.

[0031] The telescopic cylinder 6 is arranged tilted, so that the outer diameter of the chuck can be reduced, and the rotational inertia of the chuck can be reduced.

[0032] Preferably, the four cylinder struts 5 and the four telescopic cylinders 6 are distributed along the circumferential direction of the large plate 2 and are arranged in a centrally symmetrical manner.

[0033] Preferably, the first centering hole 9, the first guide hole 10, the second centering hole 11 and the second guide hole 12 are all arranged in a centrosymmetrical manner.

[0034] Preferably, the clamping claw assembly includes four slide blocks 14 fixedly mounted on the panel 3, the slide block 14 is provided with a column hole 23 corresponding to the sliding hole 13, a slider 15 is slidably mounted in the slide block 14, the end of the slider 15 away from the outer centering disk 7 is fixedly connected to the shift column 25, a roller frame 16 is fixedly mounted on the slider 15, and a clamping roller 17 is rotatably mounted on the roller frame 16 toward the side of the center of the panel 3.

[0035] Preferably, each roller frame 16 is provided with two layers of clamping rollers 17 , and the clamping rollers 17 in the vertical direction and the clamping rollers 17 in the horizontal direction are staggered.

[0036] Preferably, the roller frame 16 is provided with an auxiliary wheel frame 18 extending toward the front side of the panel 3 , and an auxiliary roller 19 is rotatably mounted on the auxiliary wheel frame 18 . The auxiliary roller 19 and the corresponding clamping roller 17 are in the same horizontal plane.

[0037] When clamping the workpiece, if it is clamped only by the clamping roller 17, it is equivalent to clamping at one end point, and the workpiece may be offset. Clamping it by the auxiliary roller 19 at the same time is equivalent to clamping it at two end points, which can improve the stability of clamping and reduce the offset of the workpiece. The clamping rollers 17 and auxiliary rollers 19 in the vertical and horizontal directions are staggered, which can increase the clamping area of ​​the pipe and improve the stability of clamping.

[0038] Preferably, a dustproof cylinder 20 is provided on the inner side between the large plate 2 and the panel 3, and a dustproof cover 21 is provided on the outer side between the large plate 2 and the panel 3, which can prevent debris generated during processing from affecting the telescopic cylinder 6, the outer centering plate 7, and the inner centering plate 8 from the inside and outside, thereby playing a dust-proof role.

[0039] Preferably, a dustproof plate 22 is installed at the tail of the chute block 14 to prevent machining debris from affecting the movement of the slider 15 in the chute block 14 .

[0040] The working principle of this utility model is as follows:

[0041] When the workpiece needs to be clamped, the four telescopic cylinders 6 are started at the same time, wherein the two longitudinal telescopic cylinders 6 drive the outer centering plate 7 to rotate, and the two transverse telescopic cylinders 6 drive the inner centering plate 8 to rotate;

[0042] During the rotation of the outer centering disk 7, the two corresponding shifting posts 25 are driven to move toward the center of the panel 3 along the first centering hole 9 and the sliding hole 13. The two corresponding sliders 15 drive the corresponding roller frames 16 to move toward the center of the panel 3 along the slide block 14, thereby clamping the workpiece from the upper and lower directions. Similarly, during the rotation of the inner centering disk 8, the workpiece can be clamped from the left and right directions to complete the centering and positioning effect of the workpiece.

[0043] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense, and may refer to mechanical or electrical connections, internal communication between two components, or direct connection. "Up," "down," "left," and "right" are only used to indicate relative positional relationships. When the absolute positions of the objects being described change, the relative positional relationships may also change.

[0044] Secondly: The drawings of the embodiments disclosed in this utility model only involve structures related to the embodiments disclosed in this utility model. Other structures can refer to common designs. In the absence of conflicts, the same embodiment and different embodiments of the utility model can be combined with each other.

[0045] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A workpiece fixing chuck for a laser tube cutting machine, comprising a chuck base (1), a large plate (2) being provided on the chuck base (1), a panel (3) being provided on the front side of the large plate (2), the large plate (2) being fixedly connected to the panel (3) via a connecting sleeve (4), and characterized in that: A cylinder support (5) is fixedly connected between the large plate (2) and the panel (3), a telescopic cylinder (6) is rotatably connected to the cylinder support (5), and the piston rod ends of the telescopic cylinder (6) are connected to push rods (24). An outer centering plate (7) and an inner centering plate (8) are provided between the panel (3) and the telescopic cylinder (6), two first centering holes (9) and two first guide holes (10) are provided on the outer centering plate (7), and two second centering holes (11) and four second guide holes (12) are provided on the inner centering plate (8). The push rods (24) on the two telescopic cylinders (6) are rotatably connected to the outer centering plate (7) in the longitudinal direction, and the push rods (24) on the two telescopic cylinders (6) are rotatably connected to the inner centering plate (8) in the transverse direction. The center plate (8) is rotatably connected, and the cylinder pillars (5) corresponding to the two telescopic cylinders (6) in the horizontal direction pass through the two first guide holes (10) and the two second guide holes (12), and the other two cylinder pillars (5) pass through the other two second guide holes (12), so that the outer centering plate (7) and the inner centering plate (8) can rotate concentrically along the cylinder pillars (5). The panel (3) is provided with four sliding holes (13) corresponding to the first centering holes (9) and the second centering holes (11), respectively. A shifting column (25) is slidably connected in the sliding hole (13). One end of the shifting column (25) is slidably installed in the corresponding first centering hole (9) and the second centering hole (11) through a bearing, and the other end is provided with a clamping claw assembly.

2. The workpiece fixing chuck for laser tube cutting machine according to claim 1, characterized in that: The four cylinder struts (5) and the four telescopic cylinders (6) are distributed along the circumferential direction of the large plate (2) and are arranged in a centrally symmetrical manner.

3. The workpiece fixing chuck for a laser tube cutting machine according to claim 1, characterized in that: The first pair of center holes (9), the first guide hole (10), the second pair of center holes (11) and the second guide hole (12) are all arranged in a centrosymmetrical manner.

4. The workpiece fixing chuck for a laser tube cutting machine according to claim 1, characterized in that: The clamping claw assembly includes four slide blocks (14) fixedly mounted on the panel (3), the slide blocks (14) are provided with column holes (23) corresponding to the sliding holes (13), a slider (15) is slidably mounted in the slide block (14), one end of the slider (15) away from the outer centering disk (7) is fixedly connected to the shifting column (25), a roller frame (16) is fixedly mounted on the slider (15), and a clamping roller (17) is rotatably mounted on the roller frame (16) toward the side of the center of the panel (3).

5. The workpiece fixing chuck for a laser tube cutting machine according to claim 4, characterized in that: Each roller frame (16) is provided with two layers of clamping rollers (17), and the clamping rollers (17) in the vertical direction and the clamping rollers (17) in the horizontal direction are arranged in an alternating manner.

6. The workpiece fixing chuck for a laser tube cutting machine according to claim 5, characterized in that: The roller frame (16) is provided with an auxiliary wheel frame (18) extending toward the front side of the panel (3), and an auxiliary roller (19) is rotatably mounted on the auxiliary wheel frame (18), and the auxiliary roller (19) and the corresponding clamping roller (17) are located on the same horizontal plane.

7. The workpiece fixing chuck for a laser tube cutting machine according to claim 1, characterized in that: A dustproof cylinder (20) is provided on the inner side between the large plate (2) and the panel (3), and a dustproof cover (21) is provided on the outer side between the large plate (2) and the panel (3).

8. The workpiece fixing chuck for a laser tube cutting machine according to claim 4, characterized in that: A dustproof plate (22) is installed at the tail of the chute block (14).

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