A full-stroke chuck for laser tube cutting

Abstract

The present invention relates to the technical field of laser tube cutting, and specifically discloses a full-stroke chuck for laser tube cutting, comprising a support plate, four groups of support columns are fixedly arranged on the upper end of the support plate, a clamping mechanism is arranged on the upper positions of the first two groups of the four groups of support columns, an inner support mechanism is arranged on the upper positions of the last two groups of the four groups of support columns, the clamping mechanism comprises a chuck body fixedly arranged on the upper positions of the first two groups of the four groups of support columns, a partition is fixedly arranged on the inner side of the chuck body, and a first slider is movably arranged on the upper and lower positions of the chuck body. The full-stroke chuck for laser tube cutting described in the present invention facilitates the close fitting of the claws and the hexagonal pipe fittings through the mutual cooperation between the clamping mechanism and the inner support mechanism, and the inner support assembly is arranged to avoid deformation of the pipe fittings after cutting due to weakening of the rigidity of the pipe fittings, and secondly prevents instability of the pipe fittings during rotation clamping, thereby ensuring the processing quality of thin-walled pipe fittings.

Description

Technical Field

[0001] The invention relates to the technical field of laser tube cutting, and in particular to a full-stroke chuck for laser tube cutting. Background Art

[0002] Laser cutting of pipe fittings is mainly used to cut various hollow round pipe fittings of non-metallic solid materials, such as plastic pipes, PVC pipes, PVB pipes and other industrial and civil materials. This kind of pipe fittings are generally used in home decoration, industry, and water conservancy construction. The full-stroke chuck is a hydraulic chuck with a long stroke distance, which is suitable for application scenarios that require a larger clamping stroke. The claws on the existing full-stroke chucks for laser tube cutting currently mostly move synchronously, and can only fix centrally symmetrical shapes, such as circles or squares. When clamping centrally asymmetrical pipe fittings, such as rectangles, the chuck is inconvenient to fix them. If additional operations are not performed to make appropriate adjustments, problems such as unstable fixation and complicated operation may be encountered, which affects the processing efficiency and the quality of pipe cutting. The versatility and practicality are poor, and the unstable fixation leads to safety hazards; secondly, the full-stroke chucks on the market in the past were not able to clamp hexagonal pipes. Due to structural and design limitations, it is often inconvenient to fit or the contact surface is small, and it is difficult to provide sufficient clamping force, which causes the pipe fittings to loosen easily during processing, affecting the processing accuracy and efficiency; in addition, during the laser cutting process of thin-walled pipe fittings, as the thin-walled pipe fittings are cut shorter, the rigidity of the pipe fittings will weaken, which will easily lead to deformation of the pipe fittings after cutting. During the cutting process, when the chuck is rotated at high speed, the clamping force of the jaws will be lost under the action of centrifugal force, resulting in insufficient clamping force to maintain constant, thereby affecting the processing quality of thin-walled pipe fittings. Summary of the invention

[0003] The main purpose of the present invention is to provide a full-stroke chuck for laser tube cutting, which can effectively solve the problems in the background technology.

[0004] To achieve the above object, the technical solution adopted by the present invention is:

[0005] A full-stroke chuck for laser tube cutting comprises a support plate, four groups of support columns are fixedly arranged on the upper end of the support plate, clamping mechanisms are arranged at the upper positions of the first two groups of the four groups of support columns, and inner support mechanisms are arranged at the upper positions of the last two groups of the four groups of support columns, the clamping mechanism comprises a chuck body fixedly arranged at the upper positions of the first two groups of the four groups of support columns, a partition is fixedly arranged on the inner side of the chuck body, first sliders are movably arranged at the upper and lower positions of the chuck body, the reverse ends of the two groups of the first sliders are fixedly connected with first claws, a first motor is fixedly installed at the rear end of the chuck body, a first main gear is fixedly connected to the front side of the first motor, and the lower side of the first main gear is movably A first gear ring is connected, and the upper and lower sides of the first gear ring are movably connected with the first sub-gear, the front sides of the two groups of the first sub-gear are fixedly connected with the first roller wheel, and one side of the two groups of the first roller wheels is movably connected with the first rack, a second motor is fixedly installed near the lower side at the rear end of the chuck body, the front side of the second motor is fixedly connected with the second main gear, one side of the second main gear is movably connected with the second gear ring, both sides of the second gear ring are movably connected with the second sub-gear, the front sides of the two groups of the second sub-gear are fixedly connected with the second roller column, the upper sides of the two groups of the second roller column are movably connected with the second rack, and one end of the two groups of the second rack is fixedly connected with the second slider.

[0006] Preferably, the reverse side of the two groups of the second sliding blocks are movably connected with a main clamping claw, the lower side of the two groups of the main clamping claws are movably connected with a secondary clamping claw, the inner sides of the two groups of the second sliding blocks are movably connected with a fixed plate, the upper and lower sides of the two groups of the fixed plates are movably provided with telescopic sleeves, the upper sides of the two groups of the main clamping claws and the lower sides of the two groups of the secondary clamping claws are movably connected with telescopic blocks, hydraulic rods are movably installed between the four groups of the telescopic sleeves and the four groups of telescopic blocks, four groups of arc blocks are fixedly provided at the front end of the chuck body, the outer sides of the four groups of the arc blocks are movably sleeved with a sleeve frame, knobs are movably provided on both sides of the two groups of the sleeve frames, and conveying rollers are movably installed on the reverse side of the two groups of the sleeve frames.

[0007] Preferably, the front side of the chuck body is provided with slide rails corresponding to the positions of the two groups of first sliders and the two groups of second sliders, the inner side of the chuck body is provided with openings corresponding to the two groups of first roller wheels and the two groups of second roller wheels, the partition is movably connected to the first gear ring and the second gear ring respectively, and the partition is movably connected to the two groups of first sub-gears and the two groups of second sub-gears respectively.

[0008] Preferably, the rotating shaft of the first motor passes through the rear side of the chuck body and is connected to the first main gear, the first gear ring is respectively meshed with the first main gear and the two groups of first sub-gears, the two groups of the first roller wheels are meshed with the two groups of first racks, and the two groups of the first racks are fixedly connected with the two groups of first sliders.

[0009] Preferably, the rotating shaft of the second motor passes through the rear side of the chuck body and is connected to the second main gear, the second gear ring is respectively meshed with the second main gear and two sets of second sub-gears, and the two sets of the second roller columns are meshed with the two sets of second racks.

[0010] Preferably, the four groups of telescopic blocks are limitedly slid on the inner sides of the four groups of telescopic sleeves, the two groups of sleeve frames are threadedly connected to the four groups of knobs, and the four groups of knobs are fitted to the four groups of arc blocks.

[0011] Preferably, the inner support mechanism comprises a circular plate fixedly arranged at the upper positions of the rear two groups of the four groups of support columns, a control motor is fixedly installed at the rear end of the circular plate, a control disk is fixedly connected to the front end of the control motor, a control groove is opened on the inner side of the control disk, a movable block is movably arranged on the inner side of the control groove, a hydraulic cylinder is fixedly installed at the front end of the movable block, a telescopic rod is movably arranged on the front side of the hydraulic cylinder, a first connecting block is fixedly connected to the outer side of the telescopic rod, connecting rods are movably connected to both sides of the first connecting block, and several groups of connecting rods are movably connected to the rear sides thereof. A group of second connecting blocks, several groups of round shafts are movably connected at the connection points between the connecting rods, several groups of the second connecting blocks are fixedly connected with connecting rods on the rear sides, several groups of the connecting rods are fixedly connected with sleeves on the front sides, several groups of the sleeves are movably provided with support blocks on the inner sides, several groups of the sleeves and the support blocks are fixedly connected with return springs, several groups of the round shafts and the support blocks are movably connected with pull ropes, several groups of the sleeves are movably provided with rollers on the inner sides near the corners, and several groups of the first connecting blocks and the second connecting blocks are fixedly provided with gaskets on the outer sides.

[0012] Preferably, the rotating shaft of the control motor passes through the inner side of the circular plate and is connected to the control disk, and the control groove is arranged obliquely.

[0013] Preferably, one group of the plurality of groups of second connecting blocks near the corner is fixedly connected to the hydraulic cylinder.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The first motor is started to drive the first main gear to rotate, thereby rotating the meshing first gear ring, and then driving the two sets of first sub-gears to rotate, so that the two sets of first roller wheels fixedly connected are rotated, driving the two sets of first racks meshing to move in the opposite direction, and driving the two sets of first slide blocks and the two sets of first claws to slide and clamp inwardly through the two sets of first racks. At the same time, the second motor is started to drive the second main gear and the second gear ring to rotate, and the two sets of second sub-gears and the second roller columns are used to drive the two sets of second racks to move in the opposite direction, thereby moving the two sets of second slide blocks inwardly, and clamping the two sets of claws in sections to facilitate the use of clamping and cutting of central asymmetric pipe fittings and central symmetrical pipe fittings, and can be conveniently adjusted when there are dimensional errors on both sides of the pipe fittings, so that the clamping force acts evenly on the pipe fittings, further improving the stability and accuracy of the clamping, ensuring that the pipe fittings are more stable during processing, and reducing vibration and displacement.

[0016] Secondly, by starting four groups of hydraulic rods, four groups of telescopic blocks are extended from the inside of the four groups of telescopic sleeves, so that the two groups of main claws and the two groups of auxiliary claws are bent around their connections to form two groups of angles, which is convenient for the use of hexagonal pipe fittings, and makes it easier for the claws and the hexagonal pipe fittings to fit more closely, thereby increasing the contact surface of the clamping and improving the clamping stability. Taking into account the special structure of the hexagonal pipe fittings, it can reduce the stress concentration on the pipe fittings during the clamping process, thereby reducing the risk of deformation of the pipe fittings, and it will also be more stable when used for round pipes.

[0017] Then, the tubes are transported by two sets of conveying rollers during laser cutting, and then extended to the outside of the four sets of arc blocks by two sets of sleeves, so as to transport tubes of different specifications in a fitting manner, thereby facilitating the improvement of the continuity of laser cutting of tubes, improving production efficiency and ensuring cutting accuracy.

[0018] In addition, by starting the hydraulic cylinder, the telescopic rod is contracted into the hydraulic cylinder, so that the connected first connecting block cooperates with the use of several groups of connecting rods, other groups of first connecting blocks and several groups of second connecting blocks, so that the several groups of first connecting blocks expand synchronously when moving backward, and the several groups of pull ropes are pulled by several groups of round shafts, so that the several groups of support blocks compress the several groups of reset springs and move inwardly of the several groups of sleeves. At the same time, the several groups of second connecting blocks also expand synchronously, so as to achieve the use of internal supports for hexagonal thin-walled pipe fittings of different specifications, avoid deformation of the pipe fittings after cutting due to weakened rigidity of the pipe fittings as the pipe fittings are cut shorter, and when the clamping force is insufficient under the centrifugal force of the claws when rotating at high speed, internal support compensation is performed to prevent instability of the pipe fittings during rotation clamping, thereby ensuring the processing quality of the hexagonal thin-walled pipe fittings.

[0019] Finally, when the hydraulic cylinder is started to drive the telescopic rod to move forward, several groups of round shafts move forward synchronously, and then several groups of support blocks are popped out according to the elastic action of several groups of reset springs, so as to meet the auxiliary inner side of the thin-walled round tube, avoid deformation during cutting of thin-walled round tube, and ensure the product quality of laser cutting pipe fittings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the partial cutaway structure of the present invention;

[0022] Figure 3 For the present invention Figure 2 The enlarged structural diagram of part A in the middle;

[0023] Figure 4 It is a partial cutaway rear view structural schematic diagram of the present invention;

[0024] Figure 5 It is a schematic diagram of the structure of the inner support mechanism of the present invention;

[0025] Figure 6 It is a partial structural schematic diagram of the inner support mechanism of the present invention;

[0026] Figure 7 It is a partial cutaway structural schematic diagram of the inner support mechanism of the present invention;

[0027] Figure 8 For the present invention Figure 7 The enlarged structural diagram of part B is shown in the figure.

[0028] In the figure: 1, support plate; 2, support column; 3, clamping mechanism; 31, chuck body; 32, partition; 33, first slider; 34, first clamping claw; 35, first motor; 36, first main gear; 37, first gear ring; 38, first sub-gear; 39, first roller wheel; 310, first rack; 311, second motor; 312, second main gear; 313, second gear ring; 314, second sub-gear; 315, second roller column; 316, second rack; 317, second slider; 318, main clamping claw; 319, sub-clamping claw; 320, fixing plate; 321. Telescopic sleeve; 322. Telescopic block; 323. Hydraulic rod; 324. Arc block; 325. Sleeve frame; 326. Knob; 327. Conveyor roller; 4. Internal support mechanism; 41. Round plate; 42. Control motor; 43. Control panel; 44. Control slot; 45. Movable block; 46. Hydraulic cylinder; 47. Telescopic rod; 48. First connecting block; 49. Connecting rod; 410. Second connecting block; 411. Round shaft; 412. Connecting rod; 413. Sleeve; 414. Support block; 415. Return spring; 416. Pull rope; 417. Roller; 418. Gasket. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be clearly and completely described below in combination with 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] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are relative relationships of directions or positions, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0031] See also Figure 1-Figure 8An embodiment of the present invention provides: a full-stroke chuck for laser tube cutting, comprising a support plate 1, four groups of support columns 2 are fixedly arranged on the upper end of the support plate 1, a clamping mechanism 3 is arranged at the upper positions of the first two groups of the four groups of support columns 2, and an inner support mechanism 4 is arranged at the upper positions of the last two groups of the four groups of support columns 2, the clamping mechanism 3 comprises a chuck body 31 fixedly arranged at the upper positions of the first two groups of the four groups of support columns 2, a partition plate 32 is fixedly arranged on the inner side of the chuck body 31, first sliders 33 are movably arranged at the upper and lower positions of the chuck body 31, the reverse ends of the two groups of first sliders 33 are fixedly connected with first claws 34, a first motor 35 is fixedly installed at the rear end of the chuck body 31, a first main gear 36 is fixedly connected to the front side of the first motor 35, and a first main gear 36 is movably connected to the lower side of the first main gear 36 The gear ring 37, the upper and lower sides of the first gear ring 37 are movably connected with the first sub-gear 38, the front sides of the two groups of first sub-gears 38 are fixedly connected with the first roller wheels 39, one side of the two groups of first roller wheels 39 is movably connected with the first rack 310, the rear end of the chuck body 31 is fixedly installed with a second motor 311 near the lower side, the front side of the second motor 311 is fixedly connected with the second main gear 312, one side of the second main gear 312 is movably connected with the second gear ring 313, both sides of the second gear ring 313 are movably connected with the second sub-gear 314, the front sides of the two groups of second sub-gears 314 are fixedly connected with the second roller column 315, the upper sides of the two groups of second roller columns 315 are movably connected with the second rack 316, and one end of the two groups of second racks 316 is fixedly connected with the second slider 317.

[0032] The reverse side of the two sets of second sliders 317 is movably connected with a main claw 318, the lower side of the two sets of main claws 318 is movably connected with a secondary claw 319, the inner side of the two sets of second sliders 317 is movably connected with a fixed plate 320, the upper and lower sides of the two sets of fixed plates 320 are movably provided with telescopic sleeves 321, the upper sides of the two sets of main claws 318 and the lower sides of the two sets of secondary claws 319 are movably connected with telescopic blocks 322, and hydraulic rods 323 are movably installed between the four sets of telescopic sleeves 321 and the four sets of telescopic blocks 322. Four groups of arc blocks 324 are fixedly arranged at the front end of the chuck body 31, and the outer sides of the four groups of arc blocks 324 are movably sleeved with sleeve frames 325. Both sides of the two groups of sleeve frames 325 are movably provided with knobs 326. The opposite sides of the two groups of sleeve frames 325 are movably installed with conveying rollers 327. The front side of the chuck body 31 is provided with slide rails corresponding to the positions of the two groups of first sliders 33 and the two groups of second sliders 317. The inner side of the chuck body 31 is provided with openings corresponding to the two groups of first roller wheels 39 and the two groups of second roller columns 315. The partition plate 32 is movably connected to the first gear ring 37 and the second gear ring 313 respectively, and the partition plate 32 is movably connected to the two sets of first sub-gears 38 and the two sets of second sub-gears 314 respectively. The rotating shaft of the first motor 35 passes through the rear side of the chuck body 31 and is connected to the first main gear 36. The first gear ring 37 is meshed with the first main gear 36 and the two sets of first sub-gears 38 respectively. The two sets of first roller wheels 39 are meshed with the two sets of first racks 310. The two sets of first racks 310 and the two sets of first sliders 33 are fixed. The second motor 311 is connected with the second main gear 312 through the rear side of the chuck body 31, the second gear ring 313 is meshed with the second main gear 312 and the two sets of second sub-gears 314 respectively, the two sets of second roller columns 315 are meshed with the two sets of second racks 316, the four sets of telescopic blocks 322 are limited to slide on the inner side of the four sets of telescopic sleeves 321, the two sets of sleeve frames 325 are threadedly connected with the four sets of knobs 326, and the four sets of knobs 326 are fitted with the four sets of arc blocks 324.

[0033] The first motor 35 is started to drive the first main gear 36 to rotate, thereby rotating the meshing first gear ring 37, and then driving the two sets of first sub-gears 38 to rotate, so that the two sets of first roller wheels 39 fixedly connected are rotated, driving the two sets of first racks 310 meshing to move in the opposite direction, and the two sets of first sliders 33 and the two sets of first claws 34 are driven to slide and clamp inwardly through the two sets of first racks 310, and at the same time, the second motor 311 is started to drive the second main gear 312 and the second gear ring 313 to rotate, and the two sets of second sub-gears 314 and the second roller column 315 are driven to move in the opposite direction, so that the two sets of second sliders 317 are moved inwardly, so as to achieve the use of clamping and cutting of the central asymmetric pipe fittings and the central symmetric pipe fittings by clamping the two sets of claws separately, and it is convenient to adjust when there are dimensional errors on both sides of the pipe fittings, so that the clamping force acts evenly on the pipe fittings, and further The stability and precision of clamping are improved, ensuring that the pipe fittings are more stable during processing, reducing vibration and displacement. Secondly, by starting the four groups of hydraulic rods 323, the four groups of telescopic blocks 322 are extended from the inner side of the four groups of telescopic sleeves 321, so that the two groups of main clamping claws 318 and the two groups of auxiliary clamping claws 319 are bent around their connection to form two groups of angles, which is convenient for the use of hexagonal pipe fittings, so that the clamping claws and the hexagonal pipe fittings can be more closely fitted, the contact surface of clamping is increased, and the clamping stability is improved. Taking into account the special structure of the hexagonal pipe fittings, the stress concentration on the pipe fittings during the clamping process can be reduced, thereby reducing the risk of deformation of the pipe fittings, and it will be more stable when used for round pipes. Then, the pipe fittings are transported by two groups of conveying rollers 327 when the laser cutting pipe fittings are cut, and then extended to the outside of the four groups of arc blocks 324 by two groups of sleeve frames 325, so as to fit and transport pipe fittings of different specifications, so as to facilitate the improvement of the continuity of the laser cutting pipe fittings, improve production efficiency and ensure cutting accuracy.

[0034] The inner support mechanism 4 includes a circular plate 41 fixedly arranged at the upper position of the rear two groups of the four groups of support columns 2, a control motor 42 is fixedly installed at the rear end of the circular plate 41, a control disk 43 is fixedly connected to the front end of the control motor 42, a control slot 44 is provided on the inner side of the control disk 43, a movable block 45 is movably arranged on the inner side of the control slot 44, a hydraulic cylinder 46 is fixedly installed at the front end of the movable block 45, a telescopic rod 47 is movably arranged on the front side of the hydraulic cylinder 46, a first connecting block 48 is fixedly connected to the outer side of the telescopic rod 47, both sides of the first connecting block 48 are movably connected to connecting rods 49, a plurality of groups of second connecting blocks 410 are movably connected to the rear sides of the connecting rods 49, and a plurality of groups of connecting rods 49 are movably connected to the rear sides of the second connecting blocks 410. Several groups of round shafts 411 are movably connected at the connection between the connecting rods 49, several groups of second connecting blocks 410 are fixedly connected to the rear sides with connecting rods 412, several groups of connecting rods 412 are fixedly connected to the front sides with sleeves 413, several groups of sleeves 413 are movably provided with support blocks 414 on the inner sides, several groups of sleeves 413 and several groups of support blocks 414 are fixedly connected with return springs 415, several groups of round shafts 411 and several groups of support blocks 414 are movably connected with pull ropes 416, several groups of sleeves 413 are movably provided with rollers 417 on the inner sides near the corners, and several groups of first connecting blocks 48 and second connecting blocks 410 are fixedly provided with gaskets 418 on the outer sides.

[0035] The rotating shaft of the control motor 42 passes through the inner side of the circular plate 41 and is connected to the control disk 43 . The control slot 44 is arranged obliquely. One group of the second connection blocks 410 near the corner is fixedly connected to the hydraulic cylinder 46 .

[0036] In addition, by starting the hydraulic cylinder 46, the telescopic rod 47 is retracted into the hydraulic cylinder 46, so that the connected first connecting block 48 cooperates with the use of several groups of connecting rods 49, other groups of first connecting blocks 48 and several groups of second connecting blocks 410, so that the several groups of first connecting blocks 48 are synchronously expanded when moving backward, and several groups of pull ropes 416 are pulled by several groups of round shafts 411, so that the several groups of support blocks 414 compress the several groups of return springs 415 and move to the inside of the several groups of sleeves 413. At the same time, the several groups of second connecting blocks 410 are also synchronously expanded, so as to realize the use of hexagonal thin-walled pipe internal supports that meet different specifications. In order to avoid deformation of the pipe after cutting due to weakening of the rigidity of the pipe as it is cut shorter, and insufficient clamping force due to the centrifugal force of the claws when rotating at high speed, internal support compensation is performed to prevent instability of the pipe during rotational clamping, thereby ensuring the processing quality of the hexagonal thin-walled pipe. Finally, when the hydraulic cylinder 46 is started to drive the telescopic rod 47 to move forward, several groups of round shafts 411 are moved forward synchronously, and then several groups of support blocks 414 are ejected according to the elastic action of several groups of reset springs 415, so as to meet the auxiliary inner side of the thin-walled round tube, avoid deformation during cutting of the thin-walled round tube, and ensure the product quality of laser cut pipe processing.

[0037] Working principle:

[0038] When in use, the first motor 35 is started to drive the first main gear 36 to rotate, thereby causing the meshing first gear ring 37 to rotate, and then driving the two sets of first sub-gears 38 to rotate, so that the two sets of first roller wheels 39 fixedly connected are rotated, driving the two sets of first racks 310 meshing to move in the opposite direction, and the two sets of first sliders 33 and the two sets of first claws 34 are driven to slide and clamp inwardly through the two sets of first racks 310, and at the same time, the second motor 311 is started to drive the second main gear 312 and the second gear ring 313 to rotate, and the two sets of second sub-gears 314 and the second roller column 315 are driven to move in the opposite direction, so that the two sets of second sliders 317 move inwardly, so as to realize the passage. By clamping in two groups of claws, it is convenient to use when clamping and cutting central asymmetric pipe fittings and central symmetric pipe fittings, and it can be conveniently adjusted when there are dimensional errors on both sides of the pipe fittings, so that the clamping force acts evenly on the pipe fittings, further improving the stability and accuracy of clamping, ensuring that the pipe fittings are more stable during processing, reducing vibration and displacement, and secondly, by starting four groups of hydraulic rods 323, four groups of telescopic blocks 322 are extended from the inner side of four groups of telescopic sleeves 321, so that the two groups of main claws 318 and the two groups of auxiliary claws 319 are bent around their connection to form two groups of angles, which is convenient for the use of hexagonal pipe fittings, and makes it easier for the claws to fit the hexagonal pipe fittings more closely, increasing the contact surface of clamping, and improving the clamping stability. , taking into account the special structure of the hexagonal pipe fittings, it is possible to reduce the stress concentration on the pipe fittings during the clamping process, thereby reducing the risk of deformation of the pipe fittings, and it will be more stable when used for round pipes, and then the pipe fittings are transported by two sets of conveying rollers 327 when the laser cutting pipe fittings are cut, and then extended to the outside of the four sets of arc blocks 324 through two sets of sleeves 325, so as to fit and transport pipe fittings of different specifications, thereby facilitating the improvement of the continuity of the laser cutting of pipe fittings, improving production efficiency and ensuring cutting accuracy. In addition, by starting the hydraulic cylinder 46, the telescopic rod 47 is retracted into the hydraulic cylinder 46, so that the connected first connecting block 48 cooperates with the use of several sets of connecting rods 49, other several sets of first connecting blocks 48 and several sets of second connecting blocks 410, from When the plurality of first connection blocks 48 move backward, they expand synchronously, and pull the plurality of pull ropes 416 through the plurality of round shafts 411, so that the plurality of support blocks 414 compress the plurality of return springs 415 and move inwardly of the plurality of sleeves 413. At the same time, the plurality of second connection blocks 410 also expand synchronously, so as to realize the use of internal supports for hexagonal thin-walled pipes of different specifications, and avoid deformation of the pipes after cutting due to weakening of the rigidity of the pipes as the pipes are cut shorter, and internal support compensation is performed to prevent instability of the pipes during rotation and clamping under the centrifugal force of the claws when rotating at high speed, thereby ensuring the processing quality of the hexagonal thin-walled pipes. Finally, when the hydraulic cylinder 46 is started to drive the telescopic rod 47 to move forward,The multiple groups of round shafts 411 are synchronously moved forward, and then the multiple groups of support blocks 414 are ejected according to the elastic action of the multiple groups of reset springs 415, so as to meet the auxiliary inner side of the thin-walled round tube, avoid the deformation during the cutting of the thin-walled round tube, and ensure the product quality of the laser cutting pipe fittings.

[0039] 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 full-stroke laser tube cutting chuck, comprising a support plate (1), characterized in that: Four groups of support columns (2) are fixedly arranged on the upper end of the support plate (1); a clamping mechanism (3) is arranged at the upper positions of the first two groups of the four groups of support columns (2); an inner support mechanism (4) is arranged at the upper positions of the last two groups of the four groups of support columns (2); the clamping mechanism (3) comprises a chuck body (31) fixedly arranged at the upper positions of the first two groups of the four groups of support columns (2); a partition plate (32) is fixedly arranged on the inner side of the chuck body (31); first sliders (33) are movably arranged at the upper and lower positions of the chuck body (31); the reverse ends of the two groups of the first sliders (33) are fixedly connected to first claws (34); a first motor (35) is fixedly installed at the rear end of the chuck body (31); a first main gear (36) is fixedly connected to the front side of the first motor (35); a first gear ring (37) is movably connected to the lower side of the first main gear (36); the first gear ring (37) The upper and lower sides of the chuck body (31) are movably connected with a first sub-gear (38), the front sides of the two groups of the first sub-gear (38) are fixedly connected with a first roller wheel (39), one side of the two groups of the first roller wheels (39) are movably connected with a first rack (310), a second motor (311) is fixedly installed at the rear end of the chuck body (31) near the lower side, the front side of the second motor (311) is fixedly connected with a second main gear (312), one side of the second main gear (312) is movably connected with a second gear ring (313), both sides of the second gear ring (313) are movably connected with a second sub-gear (314), the front sides of the two groups of the second sub-gear (314) are fixedly connected with a second roller column (315), the upper sides of the two groups of the second roller column (315) are movably connected with a second rack (316), and one end of the two groups of the second rack (316) is fixedly connected with a second slider (317); The inner support mechanism (4) comprises a circular plate (41) fixedly arranged at the upper positions of the rear two groups of the four groups of support columns (2); a control motor (42) is fixedly installed at the rear end of the circular plate (41); a control disk (43) is fixedly connected to the front end of the control motor (42); a control groove (44) is provided on the inner side of the control disk (43); a movable block (45) is movably arranged on the inner side of the control groove (44); a hydraulic cylinder (46) is fixedly installed at the front end of the movable block (45); a telescopic rod (47) is movably arranged on the front side of the hydraulic cylinder (46); a first connecting block (48) is fixedly connected to the outer side of the telescopic rod (47); connecting rods (49) are movably connected to both sides of the first connecting block (48); and a plurality of groups of second connecting blocks (410) are movably connected to the rear sides of the plurality of groups of connecting rods (49). Several groups of round shafts (411) are movably connected at the connection points between the several groups of connecting rods (49), several groups of the second connecting blocks (410) are fixedly connected to the rear sides of the several groups of connecting rods (412), several groups of the connecting rods (412) are fixedly connected to the front sides of the several groups of connecting rods (412), several groups of supporting blocks (414) are movably provided with supporting blocks (414) on the inner sides of the several groups of sleeves (413), several groups of return springs (415) are fixedly connected between the several groups of sleeves (413) and the several groups of supporting blocks (414), several groups of round shafts (411) are movably connected with the several groups of supporting blocks (414), several groups of rollers (417) are movably provided on the inner sides of the several groups of sleeves (413) near the corners, and several groups of gaskets (418) are fixedly provided on the outer sides of the first connecting blocks (48) and the second connecting blocks (410).

2. A full-stroke laser tube cutting chuck according to claim 1, characterized in that: The reverse side of the two groups of the second sliders (317) are movably connected to a main clamping claw (318), the lower side of the two groups of the main clamping claws (318) are movably connected to a secondary clamping claw (319), the inner side of the two groups of the second sliders (317) are movably connected to a fixing plate (320), the upper and lower sides of the two groups of the fixing plates (320) are movably provided with a telescopic sleeve (321), the upper sides of the two groups of the main clamping claws (318) and the lower sides of the two groups of the secondary clamping claws (319) are movably connected to a telescopic sleeve (321). Blocks (322), hydraulic rods (323) are movably installed between the four groups of telescopic sleeves (321) and the four groups of telescopic blocks (322), four groups of arc blocks (324) are fixedly installed at the front end of the chuck body (31), sleeve frames (325) are movably sleeved on the outer sides of the four groups of arc blocks (324), knobs (326) are movably installed on both sides of the two groups of sleeve frames (325), and conveying rollers (327) are movably installed on the opposite sides of the two groups of sleeve frames (325).

3. A full-stroke laser tube cutting chuck according to claim 1, characterized in that: The front side of the chuck body (31) is provided with slide rails corresponding to the positions of the two groups of first sliders (33) and the two groups of second sliders (317); the inner side of the chuck body (31) is provided with openings corresponding to the two groups of first roller wheels (39) and the two groups of second roller wheels (315); the partition plate (32) is movably connected to the first gear ring (37) and the second gear ring (313), respectively; and the partition plate (32) is movably connected to the two groups of first sub-gears (38) and the two groups of second sub-gears (314), respectively.

4. A full-stroke laser tube cutting chuck according to claim 1, characterized in that: The rotating shaft of the first motor (35) passes through the rear side of the chuck body (31) and is connected to the first main gear (36); the first gear ring (37) is respectively meshed with the first main gear (36) and the two sets of first sub-gears (38); the two sets of the first roller wheels (39) are meshed with the two sets of first racks (310); and the two sets of the first racks (310) are fixedly connected with the two sets of first slide blocks (33).

5. The full-stroke laser tube cutting chuck according to claim 1, characterized in that: The rotating shaft of the second motor (311) passes through the rear side of the chuck body (31) and is connected to the second main gear (312); the second gear ring (313) is respectively meshed with the second main gear (312) and the two sets of second sub-gears (314); and the two sets of the second roller columns (315) are meshed with the two sets of second racks (316).

6. A full-stroke laser tube cutting chuck according to claim 2, characterized in that: The four groups of telescopic blocks (322) are limitedly slid inside the four groups of telescopic sleeves (321), the two groups of sleeve frames (325) and the four groups of knobs (326) are threadedly connected, and the four groups of knobs (326) and the four groups of arc blocks (324) are fitted together.

7. The full-stroke laser tube cutting chuck according to claim 1, characterized in that: The rotating shaft of the control motor (42) passes through the inner side of the circular plate (41) and is connected to the control disk (43), and the control groove (44) is arranged to be inclined.

8. The full-stroke laser tube cutting chuck according to claim 1, characterized in that: Among the plurality of groups of second connection blocks (410), one group near a corner is fixedly connected to the hydraulic cylinder (46).

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