Laser cutting equipment and method for metal accessory machining

Abstract

The invention relates to the technical field of laser cutting, in particular to laser cutting equipment and method for metal accessory machining, the laser cutting equipment comprises a base, a rail and a laser cutter, the top of the base is fixedly connected with the bottom of the rail, and the inner bottom face of the rail is slidably connected with the laser cutter; the inner top face of the base is slidably connected with two adjusting units, and the adjusting units adapt to pipe fittings with different lengths by adjusting the distance. The track and the laser cutter are located above the adjusting unit, the adjusting unit comprises a rotating plate and a clamping unit, and the rotating plate is used for driving the clamping unit to rotate; the pipe fitting is supported from the inside of the pipe fitting and fixed, the situation that the pipe fitting is locally stressed due to clamping from the outside of the pipe fitting and is locally deformed can be avoided, and a right angle can be formed between every two supports in a four-corner supporting mode, so that the pipe fitting supporting and fixing effects are better; and it is guaranteed that cutting errors caused by deformation of the pipe fitting in the laser cutting process are avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of laser cutting, and in particular to a laser cutting device and method for processing metal parts. Background Art

[0002] Laser cutting uses a high-power density laser beam to irradiate the material to be cut, causing the material to instantly gasify or liquefy and form holes. The material can be continuously cut as the laser moves. Currently, laser oxygen cutting is more commonly used on the market. It consumes less energy, but it blows away the liquefied material during cutting, which will cause more burrs on the surface of the material. In subsequent processes, the surface needs to be polished to remove the burrs.

[0003] Considering that in the existing technology, when thin-walled pipes are clamped, due to their thin wall thickness, there is not enough support to resist the clamping force, and they are easily deformed when clamped. When fixing longer thin-walled pipes, if traditional chucks are used for clamping, the contact area at the clamping point may be small, resulting in a large pressure at the clamping point, which may cause local deformation of the thin-walled pipe. During laser cutting, if the pipe is deformed or bent, the shape of the cut may change and cause cutting errors. When used in industries with high precision, slight errors may cause poor sealing and may cause errors in coordination with other parts. Summary of the invention

[0004] The object of the present invention is to provide a laser cutting device and method for metal parts processing to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] The present invention is a laser cutting device and method for metal parts processing, comprising a base, a track and a laser cutter.

[0007] The top of the base is fixedly connected to the bottom of the track, and the inner bottom surface of the track is slidably connected to the laser cutter; the inner top surface of the base is slidably connected to two adjustment units, and the adjustment units adapt to pipes of different lengths by adjusting the distance; the track and the laser cutter are located above the adjustment units;

[0008] The adjusting unit comprises a rotating plate and a clamping unit, wherein the rotating plate is used to drive the clamping unit to rotate, a moving block is fixedly connected to the bottom of the rotating plate, and the moving block is used to adjust the distance between the adjusting units; the rotating plate is slidably connected to a supporting unit, and the supporting unit is used to support the pipe fitting; a rack plate is fixedly connected to the inner top surface of the base;

[0009] The clamping unit includes a clamping plate bottom shell and a clamping plate top shell, the clamping plate bottom shell is fixedly connected to the clamping plate top shell, the clamping plate bottom shell is provided with a cross groove, four traction blocks are slidably connected in the cross groove, and a driving unit is fixedly connected in the cross groove; a support block is fixedly connected to one end of the traction block away from the driving unit, the support block is used to support the pipe fitting from the inside of the pipe fitting, the side of the support block in contact with the pipe fitting is made of flexible material, and the driving unit is used to drive the traction block to clamp.

[0010] Furthermore, the drive unit includes two drive motors, and the output ends of the drive motors are respectively connected to the first drive shaft and the second drive shaft; a traction hole is opened on the surface of the traction block, and the traction hole is threadedly connected to the first drive shaft and the second drive shaft; the first drive shaft and the second drive shaft are arranged in a cross-stacked manner, and the first drive shaft and the second drive shaft are both bidirectional screws; the centers of the clamping plate bottom shell and the clamping plate top shell are fixedly connected with a limit block, and the outer wall of the limit block close to the bottom is opened with a cross-stacked through hole, and the through hole is rotatably connected to the first drive shaft and the second drive shaft.

[0011] Furthermore, both sides of the traction block are fixedly connected with a first adjustment shaft, the inner wall of the first adjustment shaft is slidably connected with a second adjustment shaft, and the ends of every two second adjustment shafts that are close to each other are fixedly connected with a clamping block, and the side of the clamping block close to the support block is clamped with an airbag; the airbag is filled with 90% air, the airbag is made of high temperature resistant material, and the airbag is used to support the pipe from the inside.

[0012] Furthermore, two sliding grooves are provided on one side of the rotating plate, and an electric telescopic rod is fixedly connected to the top of the moving block;

[0013] The support unit includes a pushing plate, the top of the electric telescopic rod is in contact with the pushing plate, the sliding groove is slidably connected to the pushing plate, and a first spring is fixedly connected between the pushing plate and the sliding groove; the top of the pushing plate is fixedly connected to the first supporting plate, and the inner surface of the first supporting plate is slidably connected to the second supporting plate; racks are provided on both sides of the second supporting plate, and the racks are meshed with the first gear; adjusting grooves are provided on both sides of the first supporting plate, and the adjusting grooves are rotatably connected to the first gear; the bottom of the first gear is fixedly connected to the first spline shaft, and the outer wall of the first spline shaft is slidably connected to the second spline shaft; the bottom of the second spline shaft is fixedly connected to the second gear, and the second gear is meshed with the rack plate;

[0014] One side of the moving block is fixedly connected to a limiting plate, a surface of the limiting plate is provided with a limiting hole, and the limiting hole is rotatably connected to the second spline shaft.

[0015] Furthermore, flexible strips are provided on the top of the first support plate and the second support plate, and the flexible strips are used to adapt to the size of the pipe fittings. The top surface of the flexible strips is bonded with grinding sandpaper by glue, and the grinding sandpaper is used to grind burrs on the surface of the pipe fittings.

[0016] Furthermore, a plurality of adjustment units are clamped on one side of the top shell of the clamping disk close to the support block, and the adjustment unit includes an adjustment shell, which is clamped on the top shell of the clamping disk, and the bottom surface of the adjustment shell is inclined from the middle to both sides, and a plurality of second springs are fixedly connected to the bottom surface of the adjustment shell; an end of the second spring away from the bottom surface of the adjustment shell is fixedly connected to an adjustment block, and there are two adjustment blocks, and the top surface of the adjustment block is a curved surface, and a flexible bonding layer is laid on the surface of the curved surface.

[0017] Furthermore, the adjustment block is electrically connected to the driving motor, and the driving motor will stop when the adjustment block completely enters the adjustment housing.

[0018] Furthermore, a reset rod is fixedly connected to one side of the traction block away from the limit block, a reset hole is opened on the inner surface of the clamping plate bottom shell near the reset rod, the reset hole is slidably connected to the reset block, and a third spring is fixedly connected between the reset hole and the reset block.

[0019] A laser cutting device for metal parts processing, the method comprises the following steps:

[0020] S1. Pretreatment: The surface of the pipe needs to be polished before laser cutting to ensure that the surface of the pipe is smooth and free of foreign matter during laser cutting, to prevent foreign matter or burrs on the surface of the pipe from affecting the accuracy of laser cutting and causing errors;

[0021] S2. Support the pipe fittings. First, place the processed pipe fittings on the support unit and push the pipe fittings to the position of the clamping unit. At the same time, the support unit can adjust the length according to the distance between the adjustment units to support the longer pipe fittings.

[0022] S3. Fix the pipe fitting. When fixing, the pipe fitting can be supported from the inside of the pipe fitting by the clamping unit. The internal support method can avoid the local deformation of the pipe fitting during clamping. At the same time, the corners of the square pipe fitting can be supported, and can be deformed when fitting with the pipe fitting, so that the contact area between the clamping unit and the pipe fitting is larger;

[0023] S4. Laser cutting. During laser cutting, the pipe will be heated by the high-temperature laser and transferred to the clamping unit through heat conduction, causing the air in the clamping unit to expand due to the heat. After expansion, the pipe will not be deformed, but will fit the pipe completely.

[0024] The present invention has the following beneficial effects:

[0025] 1. The present invention supports and fixes the pipe from the inside of the pipe, thereby avoiding local force on the pipe caused by clamping from the outside of the pipe, preventing local deformation of the pipe, and forming a right angle between each support through four-corner support, so that the effect of supporting and fixing the pipe is better, ensuring that there will be no cutting errors due to deformation of the pipe during laser cutting.

[0026] 2. When the present invention fixes a square tube, it can not only support the four inner surfaces of the square tube, but also use airbags to support the four corners of the square tube, thereby making the supported area of ​​the square tube larger, and the support of the corners of the square tube can also increase the stability of the support, thereby avoiding only supporting or clamping the surface of the square tube and causing local force; when it is necessary to fix a rectangular tube, the first adjustment shaft and the second adjustment shaft can follow the movement of the traction block, so that the airbag is parallel to the traction block, and the corners of the rectangular tube are fixed.

[0027] 3. The present invention can support longer pipes through the first support plate and the second support plate, and at the same time can adjust the extension length of the second adjustment unit according to the position of the adjustment unit, so that the longer the pipe, the longer the extension length, so as to achieve a better supporting effect; at the same time, the pipe will rotate during laser cutting, at this time, the flexible strip can adapt to the shape and size of the pipe, and the burrs on the surface of the pipe can be polished and removed by grinding sandpaper. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0029] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0030] Figure 2 This is a schematic diagram of the structure of the regulating unit of the present invention;

[0031] Figure 3 This is an exploded view of the support unit of the present invention;

[0032] Figure 4 It is a schematic diagram of the splitting of the clamping unit and the driving unit of the present invention;

[0033] Figure 5 This is a schematic diagram of the bottom structure of the clamping unit of the present invention;

[0034] Figure 6 It is a partial cross-sectional view of the clamping unit of the present invention (excluding the top shell of the clamping disc);

[0035] Figure 7 It is an exploded view of the clamping unit of the present invention (excluding the clamping disc top shell and the clamping disc bottom shell);

[0036] Figure 8 It is a cross-sectional view of the adjustment unit of the present invention;

[0037] Fig. 9 This is a schematic diagram of the clamping unit of the present invention fixing a square tube and a round tube;

[0038] Fig.10 The figure is a flow chart of the method of the present invention.

[0039] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0040] In the figure: 1, base; 11, track; 12, laser cutter; 2, adjustment unit; 21, rotating plate; 22, moving block; 23, limit plate; 24, rack plate; 3, support unit; 31, push plate; 32, electric telescopic rod; 33, first support plate; 34, second support plate; 35, first gear; 351, second gear; 36, first spline shaft; 361, second spline shaft; 37, first spring; 4, adjustment unit; 41, adjustment The entire housing; 42, the adjustment block; 43, the second spring; 5, the clamping unit; 51, the clamping plate bottom shell; 52, the clamping plate top shell; 53, the limit block; 54, the support block; 541, the traction block; 542, the traction hole; 55, the first adjustment shaft; 551, the second adjustment shaft; 56, the clamping block; 57, the airbag; 58, the reset rod; 581, the third spring; 6, the driving unit; 61, the driving motor; 62, the first driving shaft; 63, the second driving shaft. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] See also Figure 1-Figure 9 As shown, the present invention is a laser cutting device and method for metal fittings processing, comprising a base 1, a track 11 and a laser cutter 12, wherein the top of the base 1 is fixedly connected to the bottom of the track 11, and the inner bottom surface of the track 11 is slidably connected to the laser cutter 12; two adjustment units 2 are slidably connected to the inner top surface of the base 1, and the adjustment units 2 adapt to pipes of different lengths by adjusting the distance; the track 11 and the laser cutter 12 are located above the adjustment unit 2;

[0043] The adjusting unit 2 includes a rotating plate 21 and a clamping unit 5. The rotating plate 21 is used to drive the clamping unit 5 to rotate. The bottom of the rotating plate 21 is fixedly connected with a moving block 22, and the moving block 22 is used to adjust the distance between the adjusting units 2. The rotating plate 21 is slidably connected with a supporting unit 3, and the supporting unit 3 is used to support the pipe fitting. The inner top surface of the base 1 is fixedly connected with a rack plate 24.

[0044] The clamping unit 5 includes a clamping plate bottom shell 51 and a clamping plate top shell 52. The clamping plate bottom shell 51 is fixedly connected to the clamping plate top shell 52. The clamping plate bottom shell 51 is provided with a cross groove. Four traction blocks 541 are slidably connected in the cross groove. The driving unit 6 is fixedly connected in the cross groove. The traction block 541 is fixedly connected to the end away from the driving unit 6 with a support block 54. The support block 54 is used to support the pipe fitting from the inside of the pipe fitting. The side of the support block 54 in contact with the pipe fitting is made of flexible material. The driving unit 6 is used to drive the traction block 541 for clamping.

[0045] In this embodiment, it is considered that in the prior art, when thin-walled pipes are clamped, thin-walled pipes do not have sufficient support to resist the clamping force due to their thin wall thickness, and are easily deformed when clamped. When fixing long thin-walled pipes, if a traditional chuck is used for clamping, the contact area at the clamping point may be small, resulting in a large pressure at the clamping point, which may cause local deformation of the thin-walled pipes. During laser cutting, if the pipe is deformed or bent, the cut shape may change and cause cutting errors. When applied to industries with high precision, slight errors may cause poor sealing and may cause errors when cooperating with other parts.

[0046] Before fixing the pipe, first place the pipe on the support unit 3, align the pipe with the clamping unit 5 through the support unit 3, and adjust the position of the adjustment unit 2 as a whole through the moving block 22 to adapt to the length of the pipe. When the distance between the adjustment units 2 is the same as the length of the pipe, the pipe will fit the top shell 52 of the clamping disk.

[0047] By starting the driving unit 6, the traction block 541 slides in the cross groove, and the traction block 541 pulls the support block 54 to move. By synchronously driving the driving unit 6, the support block 54 can support the inside of the pipe, and the position of the traction block 541 can be adjusted to adapt to the inner diameter of the pipe. Since there is traction between the walls of the thin-walled pipe, it has a certain tensile resistance, that is, when the edge of the thin-walled pipe is pressed, the pressing part is likely to be deformed, and when the edge is pulled, the whole is deformed. When the support block 54 supports the pipe from the inside, local deformation of the pipe can be avoided. Unit 6 can be driven synchronously, so there will be no uneven support. Since the side of the support block 54 that contacts the pipe fitting is made of flexible material, when the support block 54 supports the pipe fitting, the flexible material will be deformed according to the shape and size of the pipe fitting, so that it fits the pipe fitting, and the contact area between the support block 54 and the pipe fitting is increased. When the contact area is increased, the occurrence of local deformation can be further avoided. Since the four traction blocks 541 move in the cross groove and support the pipe fitting, the pipe fitting can be supported at four sides at the same time, and each support forms a right angle, so that the effect of supporting and fixing the pipe fitting is better.

[0048] Specifically, the driving unit 6 includes two driving motors 61, and the output ends of the driving motors 61 are respectively connected to the first driving shaft 62 and the second driving shaft 63; a traction hole 542 is opened on the surface of the traction block 541, and the traction hole 542 is threadedly connected to the first driving shaft 62 and the second driving shaft 63; the first driving shaft 62 and the second driving shaft 63 are arranged in a cross-stacked manner, and the first driving shaft 62 and the second driving shaft 63 are both bidirectional screws; the centers of the clamping plate bottom shell 51 and the clamping plate top shell 52 are fixedly connected to the limit block 53, and the outer wall of the limit block 53 near the bottom is opened with a cross-stacked through hole, and the through hole is rotatably connected to the first driving shaft 62 and the second driving shaft 63.

[0049] In this embodiment, considering that the pipe is usually axisymmetric, the prior art usually uses more drive motors 61 to clamp the pipe. When in use, it is necessary to input instructions to all the drive motors 61. If one of them fails and cannot work normally, the force when the pipe is clamped may be unbalanced, thereby causing partial deformation of the pipe.

[0050] Since the first drive shaft 62 and the second drive shaft 63 are arranged in a cross-layered manner, the first drive shaft 62 and the second drive shaft 63 can support the four sides of the pipe when the traction block 541 is pulled. Since the first drive shaft 62 and the second drive shaft 63 are bidirectional screws, when the traction block 541 moves, every two traction blocks 541 will move inward or outward synchronously. When supporting the pipe, only two drive motors 61 are needed. At the same time, by using two drive motors 61 to drive, it can adapt to non-center-symmetrical pipes, such as rectangular pipes.

[0051] When one of the drive motors 61 fails, the pipe will continue to move under the action of the other drive motor 61. Since the support block 54 supports the pipe from the inside and the pipe usually has a certain tensile resistance, it can resist the thrust of the support block 54 to a certain extent. Even if the pipe is pushed and deformed by the support block 54, the pipe will be deformed symmetrically. Since thin-walled pipes also have a certain plasticity due to their thin wall thickness, the degree of stretching of the pipe is not large during symmetrical deformation. Compared with the prior art of using a three-jaw chuck for clamping, the force area during clamping is small. Since the clamping of the three-jaw chuck is asymmetrical, when one of the jaws fails, the pipe may be locally stressed, thereby causing local deformation.

[0052] Specifically, both sides of the traction block 541 are fixedly connected with the first adjustment shaft 55, the inner wall of the first adjustment shaft 55 is slidably connected with the second adjustment shaft 551, and the ends of each two second adjustment shafts 551 that are close to each other are fixedly connected with a clamping block 56, and the side of the clamping block 56 close to the support block 54 is clamped with an airbag 57; the airbag 57 is filled with 90% air, and the airbag 57 is made of high temperature resistant material, and the airbag 57 is used to support the pipe from the inside.

[0053] In this embodiment, considering that it may be necessary to process thin-walled square tubes when processing thin-walled pipe fittings, the prior art can usually only clamp round tubes. When a clamp such as a three-jaw chuck is used, it may not be able to clamp stably during clamping, and local force may be applied when clamping the thin-walled square tube, thereby causing local deformation. When a two-jaw chuck or a four-jaw chuck is used, the force will be concentrated on two or four surfaces of the thin-walled square tube. Since the wall thickness of the thin-walled square tube is relatively thin and lacks support, the thin-walled square tube may be unable to resist the pressure and deform.

[0054] When fixing the centrally symmetrical pipe fitting, when the traction block 541 moves, the first adjustment shaft 55 will simultaneously drive the second adjustment shaft 551 to move, and when the second adjustment shaft 551 moves, the clamping block 56 will move, and the airbag 57 clamped on the clamping block 56 will move synchronously, and when the airbag 57 moves, the thin-walled pipe fitting will be supported. Since the positions of the clamping block 56 and the airbag 57 are limited by the first adjustment shaft 55 and the second adjustment shaft 551, there will be no positional offset, and at the same time, the clamping block 56 and the airbag 57 will be parallel to the traction block 541, so that the airbag 57 will support the pipe fitting according to the position of the support block 54, and when supporting the thin-walled square tube, the support block 54 will support the four inner surfaces from the inside of the square tube, and at this time, the airbag 57 will support the four corners of the square tube, thereby making the supported area of ​​the square tube larger, and the support of the corners of the square tube can also increase the stability of the support, thereby avoiding only supporting or clamping the surface of the square tube to cause local force;

[0055] When fixing a non-center-symmetrical pipe fitting, since every two traction blocks 541 will move synchronously, when the support block 54 fits the rectangular pipe fitting, the first adjustment shaft 55 and the second adjustment shaft 551 will also move with the traction block 541 and be adjusted to a suitable distance. The positions of the first adjustment shaft 55 and the second adjustment shaft 551 can control the clamping block 56 to be parallel to the traction block 541, and the clamping block 56 and the airbag 57 can be aligned and fit with the corners of the rectangular pipe fitting;

[0056] Before laser cutting, the airbag 57 is not filled with gas, which can make the airbag 57 more closely fit the shape and size of the pipe. During laser cutting, the pipe will be heated by the high-temperature laser and the heat will be transferred to the airbag 57, causing the air in the airbag 57 to expand due to the heat, making the support more stable. Since the airbag 57 is not completely filled with gas, the expansion will not cause the pipe to deform, but will make the support more stable.

[0057] Specifically, two sliding grooves are provided on one side of the rotating plate 21, and an electric telescopic rod 32 is fixedly connected to the top of the moving block 22;

[0058] The support unit 3 includes a push plate 31, the top of the electric telescopic rod 32 contacts the push plate 31, the sliding groove is slidably connected to the push plate 31, and a first spring 37 is fixedly connected between the push plate 31 and the sliding groove; the top of the push plate 31 is fixedly connected to the first support plate 33, and the inner surface of the first support plate 33 is slidably connected to the second support plate 34; racks are provided on both sides of the second support plate 34, and the racks are meshed with the first gear 35; adjustment grooves are provided on both sides of the first support plate 33, and the adjustment grooves are rotatably connected to the first gear 35; the bottom of the first gear 35 is fixedly connected to the first spline shaft 36, and the outer wall of the first spline shaft 36 is slidably connected to the second spline shaft 361; the bottom of the second spline shaft 361 is fixedly connected to the second gear 351, and the second gear 351 is meshed with the rack plate 24;

[0059] One side of the moving block 22 is fixedly connected to a limiting plate 23 . A limiting hole is provided on the surface of the limiting plate 23 , and the limiting hole is rotatably connected to the second spline shaft 361 .

[0060] In this embodiment, it is considered that thin-walled pipes of different lengths will be processed during processing. If the thin-walled pipe is too long and there is no support, the middle part of the thin-walled pipe will be bent by gravity. When laser cutting is performed, errors may occur due to the bending of the thin-walled pipe. In the prior art, the shorter thin-walled pipe is usually processed first for the longer thin-walled pipe, and then welded into the longer thin-walled pipe. This method not only increases the number of processing steps, but also reduces the aesthetics of the thin-walled pipe after welding. At the same time, if the welding quality is poor, it will also cause sealing problems.

[0061] Before fixing the pipe fitting, the push plate 31 can be pushed to move in the sliding groove by starting the electric telescopic rod 32. When the push plate 31 moves, the first support plate 33 will move. Since the second support plate 34 slides on the inner surface of the first support plate 33, the second support plate 34 will move along with the first support plate 33 when the first support plate 33 moves. Therefore, the height of the first support plate 33 and the second support plate 34 can be controlled by the electric telescopic rod 32. The pipe fitting can be lifted to the position of the clamping unit 5 by the first support plate 33 and the second support plate 34, so that clamping can be performed automatically. After clamping, the electric telescopic rod 32 will control the first support plate 33 and the second support plate 34 to fit the outer surface of the pipe fitting.

[0062] In order to prevent the bending of the longer pipe during laser cutting, the pipe has been placed on the first support plate 33 and the second support plate 34 before clamping, and the adjusting unit 2 is pulled by the moving plate to move as a whole. At this time, the moving plate will synchronously control the limit plate 23 to move. When the limit plate 23 moves, it will push the second spline shaft 361 to move. When the second spline shaft 361 moves, the second gear 351 will rotate by meshing with the rack plate 24. When the second gear 351 rotates, it will also drive the second spline shaft 361 to rotate, and at the same time drive the first spline shaft 36 and the first gear 35 to rotate. When the first gear 35 rotates, it will mesh with the rack on the second support plate 34 and move the second support plate 34. Through the above operation, the movement of the second support plate 34 can be synchronously controlled when the adjusting unit 2 moves. When the adjusting units 2 move away from each other, the second support plate 34 will extend from the first support plate 33 to support the longer pipe, so as to prevent the longer pipe from bending due to lack of support.

[0063] When the processing is completed, the electric telescopic rod 32 will be powered off and reset under the reset force of the first spring 37 and the gravity of the first support plate 33 and the second support plate 34, reducing the energy consumed by the electric telescopic rod 32 to reset the push plate 31, achieving the effect of energy saving and emission reduction.

[0064] Specifically, flexible strips are provided on the top of the first support plate 33 and the second support plate 34, and the flexible strips are used to adapt to the size of the pipe fittings. The top surface of the flexible strips is glued with grinding sandpaper, and the grinding sandpaper is used to grind burrs on the surface of the pipe fittings.

[0065] In this embodiment, considering that when the first support plate 33 and the second support plate 34 support the pipe fitting, if only one point supports the pipe fitting, it may not be able to completely fit the pipe fitting, resulting in the pipe fitting deviating from the position due to the centrifugal force when rotating, which may cause the first support plate 33 and the second support plate 34 to fail to support the pipe fitting normally;

[0066] By setting the flexible strips on the first support plate 33 and the second support plate 34, the shape and size of the pipe can be adapted and fit with the pipe. When the pipe rotates, the pipe will also be wrapped so that the pipe will not deviate due to centrifugal force. By setting the grinding sandpaper, when the pipe is laser cut, the grinding sandpaper can be used to grind and remove the burrs after laser cutting through the rotation of the pipe, thereby reducing the subsequent process of grinding the burrs of the pipe and increasing production efficiency. Since the grinding sandpaper is bonded to the surface of the flexible strip with glue, it can be replaced when it is worn, and the grinding sandpaper can be torn off if grinding is not needed.

[0067] Specifically, a plurality of adjustment units 4 are clamped on one side of the clamping disk top shell 52 close to the support block 54, and the adjustment unit 4 includes an adjustment shell 41, which is clamped on the clamping disk top shell 52, and the bottom surface of the adjustment shell 41 is inclined from the middle to both sides, and a plurality of second springs 43 are fixedly connected to the bottom surface of the adjustment shell 41; an end of the second spring 43 away from the bottom surface of the adjustment shell 41 is fixedly connected to an adjustment block 42, and there are two adjustment blocks 42, and the top surface of the adjustment block 42 is a curved surface, and a flexible bonding layer is laid on the surface of the curved surface.

[0068] In this embodiment, considering that some processing has size requirements, different cutting styles will be used when the diameter of the pipe is large. At the same time, whether the pipe is clamped from the outside or supported from the inside, the wall thickness of the pipe cannot be understood. When the wall thickness of the pipe is different, different settings need to be adjusted for the laser cutter 12;

[0069] When the adjusting block 42 contacts the pipe fitting, the second spring 43 will be compressed, and the adjusting block 42 will move into the adjusting housing 41. The inner diameter, outer diameter and wall thickness of the pipe fitting can be obtained by calculating the distance moved by the support block 54 and the distance moved by the adjusting block 42. The shape of the pipe fitting can also be adapted by setting the adjusting block 42. When the pipe fitting is a circular pipe, the shape and size of the pipe fitting can be fitted by the cooperation of the curved surface of the top surface of the adjusting block 42 and the second spring 43. When the pipe fitting is a square pipe, since the top surface of the adjusting block 42 is a curved surface, when the square pipe pushes the vertex of the curved surface, it will push the adjusting block 42, and make the adjusting block 42 round with the contact points, and rotate, so that the contact area between the adjusting block 42 and the square pipe is larger, and a flexible fitting layer is laid on the curved surface of the adjusting block 42. Since the flexible fitting layer has a certain thickness, when the adjusting block 42 contacts the pipe fitting, the flexible fitting layer can be deformed to follow the shape and size of the pipe fitting and fit the pipe fitting to the greatest extent.

[0070] Specifically, the adjustment block 42 is electrically connected to the driving motor 61 , and when the adjustment block 42 completely enters the adjustment housing 41 , the driving motor 61 will stop.

[0071] In this embodiment, if the size of the clamped pipe is too large and has exceeded the clamping range of the device, the adjustment block 42 will be pushed completely into the adjustment shell 41 during clamping. Since the adjustment block 42 is electrically connected to the drive motor 61, when the adjustment block 42 is fully entered, the drive motor 61 will be turned off and the equipment will stop running. The position of the adjustment unit 4 can be adjusted before use to determine the maximum value of the pipe diameter.

[0072] Specifically, a reset rod 58 is fixedly connected to the side of the traction block 541 away from the limit block 53, and a reset hole is opened on the inner surface of the clamping plate bottom shell 51 near the reset rod 58. The reset hole is slidably connected to the reset block, and a third spring 581 is fixedly connected between the reset hole and the reset block.

[0073] In this embodiment, by setting the reset rod 58 and the third spring 581, when the laser cutting is completed, the drive motor 61 can be directly turned off, and the reset rod 58 can be pushed by the reset force of the third spring 581, and the reset rod 58 pushes the traction block 541 to reset, saving the power required for resetting to achieve energy saving and emission reduction.

[0074] A laser cutting device for metal parts processing, the method comprises the following steps:

[0075] S1. Pretreatment: The surface of the pipe needs to be polished before laser cutting to ensure that the surface of the pipe is smooth and free of foreign matter during laser cutting, to prevent foreign matter or burrs on the surface of the pipe from affecting the accuracy of laser cutting and causing errors;

[0076] S2. Support the pipe, first place the processed pipe on the support unit 3, and push the pipe to the position of the clamping unit 5, and the support unit 3 can adjust the length according to the distance between the adjustment units 2 to support the longer pipe;

[0077] S3. Fix the pipe fitting, and support the pipe fitting from the inside through the clamping unit 5. The internal support method can avoid the occurrence of local deformation of the pipe fitting during clamping; at the same time, the corners of the square pipe fitting can be supported, and can be deformed when fitting with the pipe fitting, so that the contact area between the clamping unit 5 and the pipe fitting is larger;

[0078] S4. Laser cutting: During laser cutting, the pipe will be heated by the high-temperature laser and transferred to the clamping unit 5 through heat conduction, so that the air in the clamping unit 5 will expand due to the heat. After expansion, the pipe will not be deformed, but will fit the pipe completely.

[0079] When using,

[0080] First, before fixing the pipe fitting, place the pipe fitting on the supporting unit 3, and use the moving plate to pull the adjusting unit 2 to move as a whole. At this time, the moving plate will synchronously control the limit plate 23 to move. When the limit plate 23 moves, it will push the second spline shaft 361 to move. When the second spline shaft 361 moves, the second gear 351 will rotate by meshing with the rack plate 24. When the second gear 351 rotates, it will also drive the second spline shaft 361 to rotate, and at the same time drive the first spline shaft 36 and the first gear 35 to rotate. When the first gear 35 rotates, it will mesh with the rack on the second supporting plate 34 and move the second supporting plate 34. Through the above operation, the movement of the second supporting plate 34 can be synchronously controlled when the adjusting unit 2 moves. When the adjusting units 2 move away from each other, the second supporting plate 34 will extend from the first supporting plate 33 to support the longer pipe fittings and prevent the longer pipe fittings from bending due to lack of support.

[0081] By starting the electric telescopic rod 32, the push plate 31 can be pushed to move in the sliding groove. When the push plate 31 moves, the first support plate 33 will move. Since the second support plate 34 slides on the inner surface of the first support plate 33, the second support plate 34 will move along with the first support plate 33 when it moves. Therefore, the height of the first support plate 33 and the second support plate 34 can be controlled by the electric telescopic rod 32, and the pipe can be lifted to the position of the clamping unit 5, so that clamping can be performed automatically. After clamping, the electric telescopic rod 32 will control the first support plate 33 and the second support plate 34 to fit the outer surface of the pipe.

[0082] Secondly, when fixing the pipe fitting, the driving unit 6 is started to make the traction block 541 slide in the cross groove, and the traction block 541 pulls the support block 54 to move, and the driving unit 6 is synchronously driven to make the support block 54 support the inside of the pipe fitting, and the position of the traction block 541 is adjusted to adapt to the inner diameter of the pipe fitting; since there is traction between the walls of the thin-walled pipe fitting, it has a certain tensile resistance, that is, when the edge of the thin-walled pipe fitting is pressed, the pressing part is likely to be deformed, and when the edge is pulled, the whole is deformed. When the support block 54 supports the pipe fitting from the inside, local deformation of the pipe fitting can be avoided. Since the driving unit 6 can synchronously drive The support block 54 is movable, so there will be no uneven support. Since the side of the support block 54 that contacts the pipe is made of flexible material, when the support block 54 supports the pipe, the flexible material will be deformed according to the shape and size of the pipe, so that it fits the pipe, and the contact area between the support block 54 and the pipe is increased. When the contact area is increased, the occurrence of local deformation can be further avoided. Since the four traction blocks 541 move in the cross groove and support the pipe, the pipe can be supported at four sides at the same time, and each support forms a right angle, so that the effect of supporting and fixing the pipe is better, ensuring that there will be no cutting errors due to deformation of the pipe during laser cutting.

[0083] When fixing the centrally symmetrical pipe fitting, when the traction block 541 moves, the first adjustment shaft 55 will simultaneously drive the second adjustment shaft 551 to move, and when the second adjustment shaft 551 moves, the clamping block 56 will move, and the airbag 57 clamped on the clamping block 56 will move synchronously, and when the airbag 57 moves, the thin-walled pipe fitting will be supported. Since the positions of the clamping block 56 and the airbag 57 are limited by the first adjustment shaft 55 and the second adjustment shaft 551, there will be no positional offset, and at the same time, the clamping block 56 and the airbag 57 will be parallel to the traction block 541, so that the airbag 57 will support the pipe fitting according to the position of the support block 54, and when supporting the thin-walled square tube, the support block 54 will support the four inner surfaces from the inside of the square tube, and at this time, the airbag 57 will support the four corners of the square tube, thereby making the supported area of ​​the square tube larger, and the support of the corners of the square tube can also increase the stability of the support, thereby avoiding only supporting or clamping the surface of the square tube to cause local force;

[0084] When fixing a non-center-symmetrical pipe fitting, since every two traction blocks 541 will move synchronously, when the support block 54 fits the rectangular pipe fitting, the first adjustment shaft 55 and the second adjustment shaft 551 will also move with the traction block 541 and be adjusted to a suitable distance. The positions of the first adjustment shaft 55 and the second adjustment shaft 551 can control the clamping block 56 to be parallel to the traction block 541, and the clamping block 56 and the airbag 57 can be aligned and fit with the corners of the rectangular pipe fitting;

[0085] Finally, before laser cutting, the airbag 57 is not filled with gas, so that the airbag 57 can better fit the shape and size of the pipe. During laser cutting, the pipe will be heated by the high-temperature laser, and the heat is transferred to the airbag 57, so that the air in the airbag 57 expands due to the heat, making the support more stable. Since the airbag 57 is not completely filled with gas, the expansion will not cause the pipe to deform, but will make the support more stable.

[0086] During laser cutting, the flexible strips on the first support plate 33 and the second support plate 34 can adapt to the shape and size of the pipe and fit with the pipe. When the pipe rotates, the flexible strips will also wrap around the pipe to prevent the pipe from deviating due to centrifugal force. The grinding sandpaper can be set to remove the burrs after laser cutting by rotating the pipe during laser cutting, thereby reducing the subsequent process of grinding the burrs on the pipe and increasing production efficiency.

[0087] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A laser cutting device for metal fittings processing, comprising a base (1), a track (11) and a laser cutter (12), wherein the top of the base (1) is fixedly connected to the bottom of the track (11), and the inner bottom surface of the track (11) is slidably connected to the laser cutter (12); two adjustment units (2) are slidably connected to the inner top surface of the base (1), and the adjustment units (2) can adapt to pipes of different lengths by adjusting the distance; the track (11) and the laser cutter (12) are located above the adjustment unit (2); Features: The adjusting unit (2) comprises a rotating plate (21) and a clamping unit (5); the rotating plate (21) is used to drive the clamping unit (5) to rotate; a moving block (22) is fixedly connected to the bottom of the rotating plate (21); the moving block (22) is used to adjust the distance between the adjusting units (2); the rotating plate (21) is slidably connected to a supporting unit (3); the supporting unit (3) is used to support the pipe fitting; the inner top surface of the base (1) is fixedly connected to a rack plate (24); The clamping unit (5) comprises a clamping disc bottom shell (51) and a clamping disc top shell (52); the clamping disc bottom shell (51) is fixedly connected to the clamping disc top shell (52); the clamping disc bottom shell (51) is provided with a cross slot, four traction blocks (541) are slidably connected in the cross slot, and a driving unit (6) is fixedly connected in the cross slot; one end of the traction block (541) away from the driving unit (6) is fixedly connected to a support block (54); the support block (54) is used to support the pipe from inside the pipe; the side of the support block (54) in contact with the pipe is made of flexible material; and the driving unit (6) is used to drive the traction block (541) to clamp.

2. The laser cutting equipment for metal parts processing according to claim 1, characterized in that: The driving unit (6) comprises two driving motors (61), and the output ends of the driving motors (61) are respectively connected to a first driving shaft (62) and a second driving shaft (63); a traction hole (542) is provided on the surface of the traction block (541), and the traction hole (542) is threadedly connected to the first driving shaft (62) and the second driving shaft (63); the first driving shaft (62) and the second driving shaft (63) are arranged in a cross-stacked manner, and the first driving shaft (62) and the second driving shaft (63) are both bidirectional screws; the centers of the clamping plate bottom shell (51) and the clamping plate top shell (52) are fixedly connected to the limit block (53), and the outer wall of the limit block (53) close to the bottom is provided with a cross-stacked through hole, and the first driving shaft (62) and the second driving shaft (63) are rotatably connected in the through hole.

3. The laser cutting equipment for metal parts processing according to claim 2, characterized in that: Both sides of the traction block (541) are fixedly connected with a first adjustment shaft (55); the inner wall of the first adjustment shaft (55) is slidably connected with a second adjustment shaft (551); each end of two adjacent ends of the second adjustment shafts (551) is fixedly connected with a clamping block (56); a side of the clamping block (56) close to the support block (54) is clamped with an airbag (57); 90 percent of the air is filled in the airbag (57); the airbag (57) is made of high temperature resistant material; and the airbag (57) is used to support the pipe from the inside.

4. The laser cutting equipment for metal parts processing according to claim 3 is characterized in that: Two sliding grooves are provided on one side of the rotating plate (21), and an electric telescopic rod (32) is fixedly connected to the top of the moving block (22); The support unit (3) comprises a pushing plate (31), the top of the electric telescopic rod (32) contacts the pushing plate (31), the sliding groove is slidably connected to the pushing plate (31), and a first spring (37) is fixedly connected between the pushing plate (31) and the sliding groove; the top of the pushing plate (31) is fixedly connected to a first supporting plate (33), and the inner surface of the first supporting plate (33) is slidably connected to a second supporting plate (34); racks are provided on both sides of the second supporting plate (34). , the racks are all meshed with a first gear (35); adjustment grooves are provided on both sides of the first support plate (33), and the adjustment grooves are rotatably connected to the first gear (35); the bottom of the first gear (35) is fixedly connected to a first spline shaft (36), and the outer wall of the first spline shaft (36) is slidably connected to a second spline shaft (361); the bottom of the second spline shaft (361) is fixedly connected to a second gear (351), and the second gear (351) is meshed with the rack plate (24); One side of the moving block (22) is fixedly connected to a limiting plate (23), a limiting hole is provided on the surface of the limiting plate (23), and the limiting hole is rotatably connected to the second spline shaft (361).

5. The laser cutting equipment for metal parts processing according to claim 4, characterized in that: Flexible strips are provided on the top of the first support plate (33) and the second support plate (34), and the flexible strips are used to adapt to the size of the pipe fittings. Grinding sandpaper is glued to the top surface of the flexible strips by glue, and the grinding sandpaper is used to grind burrs on the surface of the pipe fittings.

6. The laser cutting equipment for metal parts processing according to claim 5, characterized in that: A plurality of adjustment units (4) are clamped on one side of the clamping disk top shell (52) close to the support block (54), and the adjustment unit (4) comprises an adjustment shell (41), and the adjustment shell (41) is clamped on the clamping disk top shell (52), and the bottom surface of the adjustment shell (41) is inclined from the middle to both sides, and the bottom surface of the adjustment shell (41) is fixedly connected with a plurality of second springs (43); one end of the second spring (43) away from the bottom surface of the adjustment shell (41) is fixedly connected with an adjustment block (42), and there are two adjustment blocks (42), and the top surface of the adjustment block (42) is a curved surface, and a flexible bonding layer is laid on the surface of the curved surface.

7. The laser cutting equipment for metal parts processing according to claim 6, characterized in that: The adjustment block (42) is electrically connected to the drive motor (61), and when the adjustment block (42) completely enters the adjustment housing (41), the drive motor (61) will stop.

8. The laser cutting equipment for metal parts processing according to claim 7, characterized in that: A reset rod (58) is fixedly connected to the side of the traction block (541) away from the limit block (53); a reset hole is provided on the inner surface of the clamping plate bottom shell (51) close to the reset rod (58); the reset hole is slidably connected to the reset block; and a third spring (581) is fixedly connected between the reset hole and the reset block.

9. A laser cutting method for metal parts processing, which is applicable to the laser cutting device for metal parts processing as claimed in any one of claims 1 to 8, characterized in that: S1. Pretreatment: The surface of the pipe needs to be polished before laser cutting to ensure that the surface of the pipe is smooth and free of foreign matter during laser cutting, to prevent foreign matter or burrs on the surface of the pipe from affecting the accuracy of laser cutting and causing errors; S2. Support the pipe, first place the processed pipe on the support unit (3), and push the pipe to the position of the clamping unit (5), and at the same time, the support unit (3) can adjust the length according to the distance between the adjustment units (2) to support the longer pipe; S3. Fix the pipe fitting, and support the pipe fitting from the inside through the clamping unit (5). The internal support method can avoid the occurrence of local deformation of the pipe fitting when clamping; at the same time, the corners of the square pipe fitting can be supported, and can be deformed when fitting with the pipe fitting, so that the contact area between the clamping unit (5) and the pipe fitting is larger; S4. Laser cutting. During laser cutting, the pipe will be heated by the high-temperature laser and transferred to the clamping unit (5) through heat conduction, causing the air in the clamping unit (5) to expand due to the heat. After expansion, the pipe will not be deformed, but will fit the pipe completely.

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