Laser cutting device and method for corner repairing based on sheet metal part machining

Abstract

The invention relates to the technical field of sheet metal part laser cutting, and discloses a laser cutting device and method for corner repairing based on sheet metal part machining, the laser cutting device for corner repairing based on sheet metal part machining comprises a cutting table, and two stand columns are symmetrically distributed on the cutting table; a sliding rail is arranged on the tops of the two stand columns, a moving block is arranged on the sliding rail, an electric push rod is arranged on the top of the moving block, and a laser cutting head is arranged at the output end of the electric push rod. According to the laser cutting device for corner repairing based on sheet metal part machining, when a clamping block makes contact with the surface of a workpiece, a locking assembly immediately triggers rigid locking, and then a shifting rod automatically switches a driving mode. The adjusting mechanism can automatically adapt to various pipe diameter changes and effectively cope with manufacturing errors such as pipe ovality and uneven wall thickness. And one set of device can meet the machining requirements of workpieces of various specifications, and the time cost and equipment investment caused by frequent replacement of a traditional clamp are greatly reduced.

Description

Technical Field

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

[0002] Laser cutting uses a high-power laser beam to quickly melt and vaporize metal sheets to achieve cutting. Compared with traditional methods, laser cutting has significant advantages, fast cutting speed, and can greatly improve work efficiency, especially in mass production. It is highly flexible and can cut various metal materials without being restricted by the hardness of the material. The cutting quality is high, the incision is smooth and burr-free, and no secondary processing is required, reducing cost and time. It is also a non-contact process that does not cause mechanical stress or deformation to the material, and is suitable for thin plates and precision parts. For this reason, laser cutting is becoming more and more widely used in sheet metal processing, becoming a key technology to improve production efficiency and product quality, and driving the continuous development of the sheet metal processing industry. Existing laser cutting devices have the following defects during use: When using traditional clamping methods, if the contact area between the fixture and the tubular sheet metal is too small, the clamping force may not be evenly distributed, causing the workpiece to shift or slide during the cutting process. Thin-walled sheet metal parts themselves have poor rigidity. If there are too few clamping points or the clamping jaws are not designed properly, the workpiece is prone to slight displacement due to the impact of laser cutting or the release of internal stress in the material. This displacement will directly cause the cutting path to deviate from the designed position, such as a straight line cut becoming wavy, or a circular hole cut into an irregular shape, seriously affecting dimensional accuracy. In addition, if the workpiece slips in the middle of cutting, it may cause the laser head to collide with the material, damaging the equipment or the workpiece. For parts with high precision requirements, this misalignment may cause the entire batch of products to be scrapped.

[0003] When traditional clamping methods are used to secure thin-walled tubular sheet metal parts, the clamping force acts directly on the workpiece's outer surface. Due to the thinness of sheet metal parts and their weak structural rigidity, stress concentration can easily occur near the clamping point, causing deformation or damage. If the clamping force is excessive or unevenly distributed, the thin-walled tube may undergo plastic deformation, changing its circular cross-section to an elliptical shape, affecting assembly accuracy. When precise alignment with other components is required, this deformed tube may create gaps or interference, reducing product performance. Summary of the Invention

[0004] In view of the problem in the prior art that sheet metal parts are easily deformed when clamped, causing the cross-section to change from circular to elliptical, affecting the assembly accuracy, a laser cutting device for repairing corners based on sheet metal processing is proposed.

[0005] This application provides a laser cutting device for edge and corner repair in sheet metal processing. Its purpose is to maintain the shape stability of the workpiece during processing and ensure the accuracy of the cutting path. This device effectively avoids plastic deformation or cross-sectional distortion caused by stress concentration, thereby preventing assembly interference or poor fit caused by workpiece dimensional deviations, ultimately ensuring that the product meets the dimensional accuracy and functional performance requirements of the design.

[0006] The technical solution of the present invention is: a laser cutting device for repairing corners based on sheet metal processing, comprising a cutting table, two columns symmetrically arranged on the cutting table, a slide rail commonly provided on the top of the two columns, a moving block provided on the slide rail, an electric push rod provided on the top of the moving block, a laser cutting head provided at the output end of the electric push rod, a vertical plate provided on the cutting table, and a clamping component provided on the vertical plate; The clamping component includes a clamping assembly arranged on the vertical plate, the clamping assembly is provided with a shift assembly, a reset assembly, a transmission assembly and a push assembly, the push assembly is provided with a locking assembly, and the clamping assembly is also provided with a rotating assembly; The clamping component is used to clamp the tubular sheet metal part both internally and externally; The clamping assembly comprises a disc arranged on a vertical plate, a plurality of slide grooves are arranged on the disc in a circular array, spiral cylinders are symmetrically arranged on the inner sides of two adjacent slide grooves, a spiral driving notch is provided through the wall of the spiral cylinder (22), a slider is movably sleeved on the spiral cylinder, a clamping block is provided on the slider, an insertion rod is provided between the slider and the clamping block, and one end of the insertion rod extends into the driving notch.

[0007] Furthermore, the shift assembly includes a plurality of shift rods distributed in a circular array on a circular disk, two conical columns are symmetrically sleeved on the rod wall of the shift rod, the insertion rod is slidably connected to the outer wall of one of the corresponding conical columns, a plurality of first insertion strips are distributed in a circular array at both ends of the shift rod, a circular cavity is provided at the opposite ends of the two adjacent spiral cylinders, a circular hole is provided at the opposite ends of the two circular cavities, a plurality of first slots are distributed in a circular array in the circular holes, the first insertion strips are plugged into the inner side of the first slots, a first spring is provided on the inner walls of the opposite ends of the two circular cavities, and the facing ends of the two first springs are fixedly connected to the two ends of the shift rod respectively.

[0008] Furthermore, the reset assembly includes a movable groove arranged on the slider, a reset disk is sleeved on the wall of the insertion rod located in the movable groove, the reset disk is slidingly connected to the inner side of the movable groove, a reset spring is arranged between the reset disk and the inner wall of the movable groove, and the reset spring is sleeved on the insertion rod.

[0009] Furthermore, the transmission assembly includes a transmission rod arranged on the shift rod, the transmission rod passes through the first spring, a transmission bevel gear is arranged on the transmission rod, an active cavity is arranged on the disc, an active bevel gear is arranged in the active cavity, and the active bevel gear is meshed with the transmission bevel gear.

[0010] Furthermore, the pushing assembly includes a pushing cylinder arranged on the clamping block, an inclined surface is arranged on the insertion rod, and the pushing cylinder and the inclined surface are limitedly slidably connected.

[0011] Furthermore, the locking assembly includes an inner rod arranged in the pushing cylinder, a locking rod is arranged in the inner rod, a locking spring is arranged between the inner rod and the clamping block, two locking blocks are symmetrically distributed on the inner rod, and a plurality of locking grooves are symmetrically distributed in the pushing cylinder. The locking blocks are plugged into the inner sides of the locking grooves, an elastic arc strip is arranged between the two locking blocks, and the locking rod is fixedly connected to the elastic arc strip.

[0012] Furthermore, the rotating assembly includes a rotating wheel arranged on a disc, the rotating wheel is fixedly connected to the active bevel gear, a plurality of limiting grooves are distributed in a ring array on the disc, a limiting rod is provided on the rotating wheel, and the limiting rod is plugged into the inner side of the limiting groove.

[0013] Furthermore, it also includes a support assembly arranged on the cutting table, the support assembly includes sliding sleeves respectively arranged on two columns, a lifting rod is arranged between the two sliding sleeves, an arc-shaped support plate is arranged on the lifting rod, a connecting shaft is arranged on one of the sliding sleeves, a spur gear is arranged on the connecting shaft, a rack is arranged on the column, the spur gear is meshed with the rack, a plurality of second insertion strips are distributed in an annular array on the connecting shaft, a circular groove is provided on the sliding sleeve, a plurality of second slots are distributed in an annular array on the inner side of the circular groove, the second insertion strips are plugged into the inner side of the second slot, a rocker is provided on the connecting shaft, a second spring is provided on the connecting shaft, one end of the second spring is rotatably connected to the sliding sleeve, and the other end of the second spring is fixedly connected to the rocker.

[0014] Furthermore, it also includes a driving assembly arranged on the cutting table, the driving assembly includes a driving cylinder arranged on the disc, a driving motor arranged on the cutting table, a driving wheel is arranged on the output shaft of the driving motor, and a belt is arranged between the driving wheel and the driving cylinder.

[0015] Another object of the present invention is to provide a laser cutting method for edge and corner repair based on sheet metal processing, comprising the following steps: S1: Insert one end of the tubular sheet metal part to be processed into the driving cylinder, rotate the rocker to adjust the height of the arc-shaped support plate to support the tubular sheet metal part; S2: rotating the rotating wheel so that the clamping block approaches the inner and outer walls of the tubular sheet metal part to clamp the tubular sheet metal part; S3: When the locking rod contacts the tubular sheet metal, the locking block is inserted into the locking groove, so that the inner rod and the push cylinder are fixedly connected; S4: The inner rod squeezes the push cylinder, which, under the action of the inclined surface, squeezes the insertion rod, and under the action of the truncated cone, causes the shift rod to move. When the shift rod is driven, it can only drive one of the spiral cylinders to rotate, so that one of the two adjacent clamping blocks contacts the side wall of the tubular sheet metal, and the other continues to approach the side wall of the tubular sheet metal; S5: When both clamping blocks are in contact with the tubular sheet metal, the shift rod will reset and engage with the two spiral barrels. When the shift rod rotates, it drives the two clamping blocks to move toward the tubular sheet metal, so that the two clamping blocks clamp the tubular sheet metal.

[0016] Beneficial effects of the present invention: When the clamping block contacts the workpiece surface, the locking assembly immediately triggers a rigid lock. The shift lever then automatically switches drive mode, continuously and progressively tightening the clamping block on the other side until bidirectional pressure is balanced. This adjustment mechanism automatically adapts to varying pipe diameters, effectively addressing manufacturing errors such as ovality and uneven wall thickness. This significantly improves the versatility of the fixture, allowing a single set of devices to meet the machining needs of a wide range of workpiece specifications, significantly reducing the time and equipment investment required for frequent replacement of traditional fixtures.

[0017] A closed-loop drive system constructed through a transmission assembly and a rotating assembly enables synchronized control of multiple grippers and precise angle adjustment. The rotating assembly's high-precision positioning structure enables precise locking at any angle with exceptionally high angular repeatability. This precise synchronized control technology enables the device to perform complex spiral cutting and multi-angle beveling, achieving multi-surface machining in a single clamping setup, significantly improving processing efficiency and dimensional consistency.

[0018] When the clamping blocks contact the workpiece, the reset spring in the reset assembly works in conjunction with the locking assembly, allowing each clamping block to automatically adjust pressure based on the actual contact point, ensuring that the clamping force is evenly distributed across the workpiece surface. This pressure regulation mechanism prevents material deformation caused by excessive local pressure while ensuring sufficient clamping force to prevent workpiece displacement. It is particularly suitable for machining thin-walled, easily deformed precision sheet metal parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention from a first viewing angle; Figure 2 is a schematic diagram of the third perspective structure of the present invention; Figure 3 It is a schematic structural diagram of the clamping component of the present invention; Figure 4 It is a schematic diagram of a partial cross-sectional structure of a disc of the present invention; Figure 5 For the present invention Figure 4 A in the middle is an enlarged structural diagram; Figure 6 It is a schematic structural diagram of the clamping assembly of the present invention; Figure 7 It is a schematic cross-sectional structural diagram of the clamping assembly of the present invention; Figure 8 For the present invention Figure 7 The enlarged structural diagram at B in the middle; Figure 9 It is a partial cross-sectional structural schematic diagram of the clamping assembly of the present invention; Figure 10 It is a schematic structural diagram of the push assembly of the present invention; Figure 11 This is a schematic diagram of the exploded structure of the push assembly of the present invention; Figure 12 It is a schematic structural diagram of the locking assembly of the present invention; Figure 13 It is a schematic diagram of the partial structure of the locking assembly of the present invention; Figure 14 It is a schematic diagram of the support assembly structure of the present invention.

[0020] In the picture: 1. Cutting table; 11. Column; 12. Slide rail; 13. Moving block; 14. Electric push rod; 15. Laser cutting head; 16. Vertical plate; 2. Clamping assembly; 21. Disc; 22. Spiral cylinder; 23. Slider; 24. Clamping block; 25. Insertion rod; 3. Shifting assembly; 31. Shifting rod; 32. Round table column; 33. First insertion strip; 34. First slot; 35. First spring; 4. Reset assembly; 41. Reset disk; 42. Reset spring; 5. Transmission assembly; 51. Transmission rod; 52. Transmission bevel gear; 53. Active bevel gear; 6. Pushing assembly; 61. Pushing cylinder; 7. Locking assembly; 71. Inner rod; 72. Locking rod; 73. Locking spring; 74. Locking block; 75. Locking slot; 76. Elastic arc strip; 8. Rotating assembly; 81. Rotating wheel; 82. Limiting slot; 83. Limiting rod; 9. Support assembly; 91. Sliding sleeve; 92. Lifting rod; 93. Arc support plate; 94. Connecting shaft; 95. Spur gear; 96. Rack; 97. Second insert strip; 98. Second slot; 99. Rocker; 910. Second spring; 10. Driving assembly; 101. Driving cylinder; 102. Driving motor; 103. Driving wheel; 104. Belt. DETAILED DESCRIPTION

[0021] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0022] Example 1, reference Figure 1-Figure 4 and Figure 6 , which is the first embodiment of the present invention, provides a laser cutting device for repairing corners based on sheet metal processing, including a cutting table 1, on which two columns 11 are symmetrically distributed and slidingly connected to limit positions, and a slide rail 12 is fixedly connected to the top of the two columns 11. A moving block 13 is slidingly connected to the slide rail 12 in the upper limit position, and an electric push rod 14 is fixedly connected to the top of the moving block 13. The output end of the electric push rod 14 is fixedly connected to a laser cutting head 15. The cutting table 1 is also fixedly connected to a vertical plate 16, and also includes a clamping component installed on the vertical plate 16; the clamping component includes a clamping assembly 2 installed on the vertical plate 16, and a shift assembly 3, a reset assembly 4, and a transmission assembly are installed on the clamping assembly 2. Part 5 and pushing component 6, a locking component 7 is installed on the pushing component 6, and a rotating component 8 is also installed on the clamping component 2; the clamping component is used to clamp the tubular sheet metal part inside and outside at the same time; the clamping component 2 includes a disc 21 rotatably connected to the vertical plate 16, and a plurality of slide grooves are distributed in an annular array on the disc 21, and the inner sides of two adjacent slide grooves are symmetrically distributed and rotatably connected to the spiral cylinder 22, and a spiral driving groove is opened through the wall of the spiral cylinder 22, and a slider 23 is movably sleeved on the spiral cylinder 22, and a clamping block 24 is fixedly connected to the slider 23, and an insertion rod 25 is slidably connected between the slider 23 and the clamping block 24, and one end of the insertion rod 25 extends into the driving groove.

[0023] Specifically, the tubular sheet metal to be cut is clamped by a clamping component, and the two columns 11 slide on the cutting table 1. The moving block 13 drives the laser cutting head 15 to move, so that the laser cutting head 15 moves to the position to be cut. The electric push rod 14 is started to drive the laser cutting head 15 to move downward to the top of the sheet metal, and the laser cutting head 15 is started to laser cut the sheet metal. The spiral cylinder 22 rotates inside the slide groove. Under the action of the insert rod 25, the slider 23 slides inside the slide groove, driving the clamping block 24 to move. The clamping block 24 located on the outside of the tubular sheet metal contacts the outer wall of the tubular sheet metal, and the clamping block 24 located on the inside of the tubular sheet metal contacts the inner wall of the tubular sheet metal, clamping the inner and outer walls of the tubular sheet metal at the same time. A two-way embracing clamping of the pipe is achieved. Compared with the traditional unilateral clamping method, this internal and external synchronous clamping design improves the uniformity of the clamping force distribution and effectively avoids displacement or deformation of the workpiece due to uneven force. When the disc 21 rotates, it can drive the tubular sheet metal to be cut to rotate, cutting different positions of the tubular sheet metal Reference Figure 7-Figure 9The shift assembly 3 includes a plurality of shift rods 31 distributed in an annular array and rotatably connected to the disc 21. Two conical columns 32 are symmetrically sleeved on the rod wall of the shift rod 31. The insertion rod 25 is slidably connected to the outer wall of one of the corresponding conical columns 32. A plurality of first insertion strips 33 are fixedly connected in an annular array at both ends of the shift rod 31. A circular cavity is opened at the opposite ends of the two adjacent spiral cylinders 22. A circular hole is opened at the opposite ends of the two circular cavities. A plurality of first slots 34 are opened in an annular array in the circular holes. The first insertion strips 33 are plugged into the inner sides of the first slots 34. The inner walls of the opposite ends of the two circular cavities are rotatably connected to the first springs 35. The facing ends of the two first springs 35 are respectively fixedly connected to the two ends of the shift rod 31.

[0024] Specifically, when the two first springs 35 are at their original length, the first insertion strip 33 at one end of the shift rod 31 and the first insertion strip 33 at the other end of the shift rod 31 are respectively inserted into the corresponding first slots 34. When the shift rod 31 rotates, the first insertion strip 33 and the first slots 34 cooperate to drive the two adjacent spiral cylinders 22 to rotate. Under the action of the insertion rod 25, the two sliders 23 in the two adjacent chutes slide toward or away from each other, driving the two adjacent clamping blocks 24 to slide toward or away from each other. When the insertion rod 25 contacts the conical column 32, the conical column 32 pushes the shift rod 31 toward one end, causing the shift rod 31 to move into one of the circular cavities, squeezing one of the first springs 35 and stretching the other first spring 35, causing the first insertion strip 33 to slide within the first slots 34. When one end of the shift rod 31 extends into the circular cavity, the first insertion strip 33 at that end slides out of the first slot 34, while the first insertion strip 33 at the other end of the shift rod 31 remains engaged with the first slot 34. Rotating the shift rod 31 rotates one of the spiral barrels 22, while the other spiral barrel 22 stops rotating. That is, when one clamping block 24 contacts the inner or outer wall of a tubular sheet metal part, the clamping block 24 stops moving, while the other, opposite clamping block 24, continues moving until it contacts the wall of the tubular sheet metal part. This achieves adaptive clamping of tubular sheet metal parts of varying diameters, significantly improving the versatility and clamping reliability of the device.

[0025] Reference Figure 8 The reset assembly 4 includes a movable groove on the slider 23, and a reset disk 41 is sleeved on the rod wall of the insertion rod 25 located in the movable groove. The reset disk 41 is slidingly connected to the inner side of the movable groove. A reset spring 42 is fixedly connected between the reset disk 41 and the inner wall of the movable groove, and the reset spring 42 is sleeved on the insertion rod 25.

[0026] Specifically, the rod 25 is slidably connected to the conical column 32. The conical column 32 acts to hold the rod 25 in place. The reset disk 41 compresses the reset spring 42. As the rod 25 slides on the conical column 32, the reset spring 42 keeps the rod 25 in contact with the conical column 32. This allows the rod 25 to push the conical column 32 when it is squeezed.

[0027] Reference Figure 6 、 Figure 7 and Figure 9 The transmission assembly 5 includes a transmission rod 51 that is limitedly slidably connected to the shift rod 31. The transmission rod 51 passes through the first spring 35. A transmission bevel gear 52 is fixedly connected to the transmission rod 51. A movable cavity is opened on the disc 21. A driving bevel gear 53 is rotatably connected in the movable cavity. The driving bevel gear 53 is meshed with the transmission bevel gear 52.

[0028] Specifically, the driving bevel gear 53 rotates, driving the transmission bevel gear 52 to rotate, and driving the shift rod 31 to rotate through the transmission rod 51 .

[0029] Reference Figure 10 and Figure 11 The pushing assembly 6 includes a pushing cylinder 61 slidably connected to the clamping block 24 , and an inclined surface is provided on the insertion rod 25 , and the pushing cylinder 61 is limitedly slidably connected to the inclined surface.

[0030] Specifically, when the insertion rod 25 moves into the spiral cylinder 22, the push cylinder 61 slides on the inclined surface, but the push cylinder 61 is always in contact with the inclined surface. When the push cylinder 61 pushes the insertion rod 25, the insertion rod 25 is pressed against the cone column 32 under the action of the inclined surface.

[0031] Reference Figure 11-13 The locking assembly 7 includes an inner rod 71 slidably connected to the push cylinder 61, a locking rod 72 slidably connected to the inner rod 71, a locking spring 73 fixedly connected between the inner rod 71 and the clamping block 24, two locking blocks 74 are symmetrically distributed and slidably connected on the inner rod 71, and a plurality of locking grooves 75 are symmetrically distributed in the push cylinder 61. The locking blocks 74 are plugged into the inner sides of the locking grooves 75, and an elastic arc strip 76 is fixedly connected between the two locking blocks 74, and the locking rod 72 is fixedly connected to the elastic arc strip 76.

[0032] Specifically, when the clamping block 24 contacts the tubular sheet metal, the locking rod 72 will first contact the tubular sheet metal and be squeezed into the inner rod 71, squeezing the elastic curved strip 76, causing the elastic curved strip 76 to straighten, pushing the two locking blocks 74 away from each other, so that the two locking blocks 74 are inserted into the locking grooves 75. Under the action of the locking grooves 75, the inner rod 71 is rigidly connected to the push cylinder 61. When the tubular sheet metal contacts the inner rod 71, it pushes the inner rod 71 to move, which in turn drives the push cylinder 61 to move, pushing the insertion rod 25 to move. When the tubular sheet metal is not in contact with the locking rod 72, the elastic arc strip 76 will bend, driving the two locking blocks 74 to slide relative to each other, so that the two locking blocks 74 are separated from the locking groove 75. At this time, the inner rod 71 and the push cylinder 61 are in sliding connection. When the insertion rod 25 moves into the spiral cylinder 22, it drives the push cylinder 61 to move, so that the insertion rod 25 can move normally in and out of the spiral cylinder 22.

[0033] Reference Figure 5 The rotating assembly 8 includes a rotating wheel 81 rotatably connected to the disc 21, the rotating wheel 81 is fixedly connected to the driving bevel gear 53, and a plurality of limiting grooves 82 are distributed in a ring array on the disc 21. A limiting rod 83 is slidably connected to the rotating wheel 81, and the limiting rod 83 is plugged into the inner side of the limiting groove 82.

[0034] Specifically, pull out the limiting rod 83 to separate the limiting rod 83 from the limiting groove 82, rotate the rotating wheel 81, drive the active bevel gear 53 to rotate, clamp the tubular sheet metal, and then reinsert the limiting rod 83 into the limiting groove 82 to limit the rotating wheel 81.

[0035] Example 2, reference Figure 1 、 Figure 2 and Figure 14 , which is a second embodiment of the present invention. This embodiment differs from the first embodiment in that it also includes a support assembly 9 installed on the cutting table 1, the support assembly 9 includes sliding sleeves 91 respectively connected to the two columns 11, a lifting rod 92 is fixedly connected between the two sliding sleeves 91, and an arc-shaped support plate 93 is fixedly connected to the lifting rod 92. A connecting shaft 94 is movably connected to one of the sliding sleeves 91, and a spur gear 95 is fixedly sleeved on the connecting shaft 94. A rack 96 is fixedly connected to the column 11, and the spur gear 95 is meshed with the rack 96. A plurality of second insertion strips 97 are fixedly connected to the connecting shaft 94 in an annular array. A circular groove is formed on the sliding sleeve 91, and a plurality of second slots 98 are distributed in an annular array on the inner side of the circular groove. The second insertion strips 97 are plugged into the inner side of the second slots 98. A rocker 99 is fixedly connected to the connecting shaft 94, and a second spring 910 is sleeved on the connecting shaft 94. One end of the second spring 910 is rotatably connected to the sliding sleeve 91, and the other end of the second spring 910 is fixedly connected to the rocker 99.

[0036] Specifically, the curved support plate 93 supports the tubular sheet metal. Pulling the rocker 99 moves the connecting shaft 94, separating the second insertion strip 97 from the inside of the second slot 98. The second spring 910 is stretched, and the rocker 99 is rotated, driving the spur gear 95 to rotate. Under the action of the rack 96, the sliding sleeve 91 slides on the column 11, driving the lifting rod 92 to move, thereby adjusting the height of the curved support plate 93 to accommodate the support of tubular sheet metals of different diameters. Releasing the rocker 99, under the action of the second spring 910, drives the connecting shaft 94 to move into the circular groove, allowing the second insertion strip 97 to re-engage with the second slot 98, acting as a limiter for the connecting shaft 94 and the sliding sleeve 91.

[0037] Reference Figure 3 , also includes a drive assembly 10 installed on the cutting table 1, the drive assembly 10 includes a drive cylinder 101 fixedly connected to the disc 21, a drive motor 102 fixedly connected to the cutting table 1, the output shaft of the drive motor 102 is fixedly connected to a drive wheel 103, and a belt 104 is provided between the drive wheel 103 and the drive cylinder 101.

[0038] Specifically, the driving motor 102 is started to drive the driving wheel 103 to rotate, which in turn drives the driving drum 101 to rotate under the action of the belt 104, thereby driving the disc 21 to rotate. The rest of the structure is the same as that of the first embodiment.

[0039] Example 3, reference Figures 1-14 , as a third embodiment of the present invention, provides: a laser cutting method for repairing corners based on sheet metal processing, comprising the following steps: S1: Insert one end of the tubular sheet metal part to be processed into the driving cylinder 101, rotate the rocker 99, adjust the height of the arc-shaped support plate 93, and support the tubular sheet metal part; S2: rotating the rotating wheel 81 so that the clamping block 24 approaches the inner and outer walls of the tubular sheet metal part to clamp the tubular sheet metal part; S3: When the locking rod 72 contacts the tubular sheet metal, the locking block 74 is inserted into the locking groove 75, so that the inner rod 71 and the pushing cylinder 61 are fixedly connected; S4: The inner rod 71 squeezes the push cylinder 61, and under the action of the inclined surface, squeezes the insertion rod 25, and under the action of the cone column 32, the shift rod 31 moves. When the shift rod 31 is driven, it can only drive one of the spiral cylinders 22 to rotate, so that one of the two adjacent clamping blocks 24 contacts the side wall of the tubular sheet metal, and the other continues to approach the side wall of the tubular sheet metal; S5: When both clamping blocks 24 are in contact with the tubular sheet metal, the shift rod 31 will reset and engage with the two spiral cylinders 22. When the shift rod 31 rotates, it drives the two clamping blocks 24 to move toward the tubular sheet metal, so that the two clamping blocks 24 clamp the tubular sheet metal.

[0040] Based on Examples 1-3, the working principle of the present invention is as follows: insert one end of the tubular sheet metal to be processed into the driving cylinder 101, rotate the rocker 99, adjust the height of the arc support plate 93, and support the tubular sheet metal. Rotate the rotating wheel 81 so that the clamping block 24 approaches the inner and outer walls of the tubular sheet metal and clamps the tubular sheet metal. When the locking rod 72 contacts the tubular sheet metal, the locking block 74 is inserted into the locking groove 75, so that the inner rod 71 and the push cylinder 61 are fixedly connected. The inner rod 71 squeezes the push cylinder 61, and under the action of the inclined surface, squeezes the insertion rod 25, and under the action of the cone column 32, the shift rod 31 moves. When the shift rod 31 is driven, it can only drive one of the spiral cylinders 22 to rotate, so that one of the two adjacent clamping blocks 24 contacts the side wall of the tubular sheet metal, and the other continues to approach the side wall of the tubular sheet metal. When both clamping blocks 24 are in contact with the tubular sheet metal, the shift rod 31 will reset and engage with the two spiral cylinders 22. When the shift rod 31 rotates, it drives the two clamping blocks 24 to move toward the tubular sheet metal, so that the two clamping blocks 24 clamp the tubular sheet metal.

[0041] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. A laser cutting device for edge and corner repair based on sheet metal processing, comprising a cutting table (1), two upright posts (11) symmetrically arranged on the cutting table (1), a slide rail (12) being commonly arranged on the top of the two upright posts (11), a moving block (13) being arranged on the slide rail (12), an electric push rod (14) being arranged on the top of the moving block (13), a laser cutting head (15) being arranged at the output end of the electric push rod (14), and a vertical plate (16) being further arranged on the cutting table (1), characterized in that: It also includes a clamping component arranged on the vertical plate (16); The clamping component comprises a clamping assembly (2) arranged on a vertical plate (16); a shifting assembly (3), a resetting assembly (4), a transmission assembly (5) and a pushing assembly (6) are arranged on the clamping assembly (2); a locking assembly (7) is arranged on the pushing assembly (6); and a rotating assembly (8) is also arranged on the clamping assembly (2); The clamping component is used to clamp the tubular sheet metal part both internally and externally; The clamping assembly (2) includes a disk (21) arranged on a vertical plate (16), a plurality of chutes are arranged on the disk (21) in an annular array, a spiral cylinder (22) is symmetrically arranged on the inner sides of two adjacent chutes, a spiral driving notch is provided through the cylinder wall of the spiral cylinder (22), a slider (23) is movably provided on the spiral cylinder (22), a clamping block (24) is provided on the slider (23), an insertion rod (25) is provided between the slider (23) and the clamping block (24), and one end of the insertion rod (25) extends into the driving notch.

2. The laser cutting device for edge and corner repair based on sheet metal processing according to claim 1, characterized in that: The shift assembly (3) comprises a plurality of shift rods (31) arranged in an annular array on a disc (21), two truncated cone columns (32) are symmetrically sleeved on the rod wall of the shift rod (31), the insertion rod (25) is slidably connected to the outer wall of one of the corresponding truncated cone columns (32), a plurality of first insertion strips (33) are arranged in an annular array at both ends of the shift rod (31), a circular cavity is arranged at the opposite ends of two adjacent spiral cylinders (22), a circular hole is arranged at the opposite ends of the two circular cavities, a plurality of first slots (34) are arranged in an annular array in the circular holes, the first insertion strips (33) are plugged into the inner sides of the first slots (34), a first spring (35) is arranged on the inner walls of the opposite ends of the two circular cavities, and the opposite ends of the two first springs (35) are fixedly connected to the two ends of the shift rod (31).

3. The laser cutting device for edge and corner repair based on sheet metal processing according to claim 2, characterized in that: The reset assembly (4) includes a movable groove provided on the slider (23), a reset disk (41) is sleeved on the rod wall of the insertion rod (25) located in the movable groove, the reset disk (41) is in limited sliding connection with the inner side of the movable groove, a reset spring (42) is provided between the reset disk (41) and the inner wall of the movable groove, and the reset spring (42) is sleeved on the insertion rod (25).

4. The laser cutting device for edge and corner repair based on sheet metal processing according to claim 3, characterized in that: The transmission assembly (5) includes a transmission rod (51) arranged on the shift rod (31), the transmission rod (51) passing through the first spring (35), a transmission bevel gear (52) arranged on the transmission rod (51), a movable cavity arranged on the disc (21), a driving bevel gear (53) arranged in the movable cavity, and the driving bevel gear (53) meshingly connected with the transmission bevel gear (52).

5. The laser cutting device for edge and corner repair based on sheet metal processing according to claim 4, characterized in that: The pushing assembly (6) comprises a pushing cylinder (61) arranged on the clamping block (24); an inclined surface is provided on the inserting rod (25); and the pushing cylinder (61) and the inclined surface are in position-limiting sliding connection.

6. The laser cutting device for edge and corner repair based on sheet metal processing according to claim 5, characterized in that: The locking assembly (7) includes an inner rod (71) arranged in the push cylinder (61), a locking rod (72) arranged in the inner rod (71), a locking spring (73) arranged between the inner rod (71) and the clamping block (24), two locking blocks (74) symmetrically arranged on the inner rod (71), a plurality of locking grooves (75) symmetrically arranged in the push cylinder (61), the locking blocks (74) and the inner sides of the locking grooves (75) plugged into each other, an elastic arc strip (76) arranged between the two locking blocks (74), and the locking rod (72) and the elastic arc strip (76) fixedly connected.

7. The laser cutting device for edge and corner repair based on sheet metal processing according to claim 6, characterized in that: The rotating assembly (8) includes a rotating wheel (81) arranged on the disc (21), the rotating wheel (81) being fixedly connected to the driving bevel gear (53), a plurality of limiting grooves (82) being distributed in an annular array on the disc (21), a limiting rod (83) being provided on the rotating wheel (81), and the limiting rod (83) being plugged into the inner side of the limiting groove (82).

8. The laser cutting device for edge and corner repair based on sheet metal processing according to claim 7, characterized in that: The cutting table (1) further comprises a support assembly (9), the support assembly (9) comprising sliding sleeves (91) respectively arranged on two upright posts (11), a lifting rod (92) being arranged between the two sliding sleeves (91), an arc-shaped support plate (93) being arranged on the lifting rod (92), a connecting shaft (94) being arranged on one of the sliding sleeves (91), a spur gear (95) being arranged on the connecting shaft (94), a rack (96) being arranged on the upright post (11), and the spur gear (95) being meshed and connected with the rack (96). A plurality of second insertion strips (97) are arranged in an annular array on the connecting shaft (94), a circular groove is arranged on the sliding sleeve (91), a plurality of second slots (98) are arranged in an annular array on the inner side of the circular groove, the second insertion strips (97) are plugged into the inner side of the second slots (98), a rocker (99) is arranged on the connecting shaft (94), a second spring (910) is arranged on the connecting shaft (94), one end of the second spring (910) is rotatably connected to the sliding sleeve (91), and the other end of the second spring (910) is fixedly connected to the rocker (99).

9. The laser cutting device for edge and corner repair based on sheet metal processing according to claim 8, characterized in that: The invention also includes a drive assembly (10) arranged on the cutting table (1), wherein the drive assembly (10) includes a drive cylinder (101) arranged on the disc (21), a drive motor (102) arranged on the cutting table (1), a drive wheel (103) being arranged on the output shaft of the drive motor (102), and a belt (104) being arranged between the drive wheel (103) and the drive cylinder (101).

10. A laser cutting method for repairing corners based on sheet metal processing, applied to the laser cutting device for repairing corners based on sheet metal processing as claimed in claim 9, characterized in that: The following steps are involved: S1: insert one end of the tubular sheet metal part to be processed into the driving cylinder (101), rotate the rocker (99), adjust the height of the arc support plate (93), and support the tubular sheet metal part; S2: rotating the rotating wheel (81) so that the clamping block (24) approaches the inner and outer walls of the tubular sheet metal part to clamp the tubular sheet metal part; S3: When the locking rod (72) contacts the tubular sheet metal, the locking block (74) is inserted into the locking groove (75), so that the inner rod (71) and the push cylinder (61) are fixedly connected; S4: The inner rod (71) squeezes the push cylinder (61), and under the action of the inclined surface, squeezes the insertion rod (25), and under the action of the truncated cone (32), the shift rod (31) moves. When the shift rod (31) is driven, it can only drive one of the spiral cylinders (22) to rotate, so that one of the two adjacent clamping blocks (24) contacts the side wall of the tubular sheet metal, and the other continues to approach the side wall of the tubular sheet metal; S5: When both clamping blocks (24) are in contact with the tubular sheet metal, the shifting rod (31) will be reset and engaged with the two spiral cylinders (22). When the shifting rod (31) rotates, it drives the two clamping blocks (24) to move toward the tubular sheet metal, so that the two clamping blocks (24) clamp the tubular sheet metal.

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