Laser cutting machine for electrical cabinet sheet metal part machining

Abstract

The invention relates to the technical field of laser cutting machines, and discloses a laser cutting machine for electrical cabinet sheet metal part machining, which comprises a rack, a plurality of supporting strips are arranged at the bottom of the rack, a plurality of fixing plates are fixedly arranged at the bottom of the inner side of the rack, and transmission shafts are arranged on the two sides of the top of each fixing plate. The supporting strips are arranged in pairs. The supporting strips are driven to rotate through transmission of the transmission shaft, so that the fixed plate and the scraping plate can scrape molten slag solidified on the tops of the supporting strips in a short interval period, the flatness of a supporting table top formed by the supporting strips is guaranteed, and after the interval period is long, the spring compression amount corresponding to the bottom supporting strips is increased through the adjusting wheel, and the stability of the supporting table top is improved. The supporting strips and the fixedly connected structure are descended through cooperation of elastic force of the springs and gravity, on one hand, the used supporting strips are switched, and on the other hand, the height reduction amount caused by the melting part is compensated as much as possible, so that the flatness of the supporting table top is guaranteed, and meanwhile the service life of the laser cutting machine is prolonged.

Description

Technical Field

[0001] This application relates to the field of laser cutting machine technology, and in particular to a laser cutting machine for processing sheet metal parts of electrical cabinets. Background Technology

[0002] Laser cutting machines for sheet metal processing are thermal cutting devices that use a high-energy laser beam to irradiate the surface of a workpiece, rapidly melting and vaporizing the material to create a kerf. Laser cutting machines are commonly used to process various sheet metal parts, such as cabinet doors, side panels, mounting plates, and ventilation windows for electrical cabinets. Existing laser cutting machines for sheet metal processing typically include a gantry-type moving mechanism. During operation, a suction cup or other transport mechanism first lifts the sheet metal sheet to be processed onto the worktable. The worktable consists of toothed support bars arranged on top. The gantry-type moving mechanism drives the laser cutting head to move horizontally or vertically. Simultaneously, the laser cutting head uses the generated high-energy-density laser spot to irradiate the workpiece, thermally cutting the thin metal sheet. After cutting, the parts are manually removed from the worktable for further processing, thus completing the intelligent cutting operation of the sheet metal parts.

[0003] In the process of processing sheet metal parts, the molten metal droplets generated by the existing laser cutting machine tend to splash onto the top of the support bar and condense around the toothed top to form slag. Furthermore, due to the different processing paths of different batches of laser cutting heads, the thickness of slag accumulated on different support bars varies after long-term use. This results in different top heights in different areas of the support table, which can cause some areas of the thin metal sheet to bend due to lack of support from the teeth of the support bar when it is laid flat on the support table. This affects the thermal cutting accuracy of the laser cutting head on the bent parts of the thin metal sheet. Summary of the Invention

[0004] This application proposes a laser cutting machine for processing sheet metal parts of electrical cabinets, which has the advantages of timely cleaning of solidified metal slag and increasing the area that can participate in supporting sheet metal parts, in order to solve the problem that the solidified slag remaining after long-term use of existing laser cutting machines causes uneven height of the support bar teeth.

[0005] To achieve the above objectives, this application adopts the following technical solution: a laser cutting machine for processing sheet metal parts of electrical cabinets, including a frame, a plurality of support bars are provided at the bottom of the frame, a plurality of fixing plates are fixedly provided at the bottom of the inner side of the frame, and a drive shaft is provided on both sides of the top of the fixing plate. The support bars are arranged in pairs, and two connecting plates are fixedly connected between two support bars. Two end plates are provided between two corresponding drive shafts, and the machine also includes an adjustment mechanism.

[0006] The adjustment mechanism includes a connecting block, and guide grooves are provided on both sides of the connecting plate. The adjustment mechanism can drive the support bar to rotate around the axis of the transmission shaft and switch the support bar located at the top. The adjustment mechanism is used to switch the radial fixed state of the end plate and the transmission shaft. When the support bar is at the bottom, the relative fixation between the end plate and the transmission shaft can be removed. The corresponding support bar changes its distance from the axis of the transmission shaft in the radial direction through the relative sliding of the guide groove and the connecting block.

[0007] Furthermore, a laser cutting assembly is provided on the top of the frame, the drive shaft is rotatably connected to the frame, two corresponding support bars are symmetrically arranged about the center plane of the drive shaft, the support bars and connecting plates are fixedly connected to the corresponding end plates, and the connecting block is fixedly sleeved with the drive shaft.

[0008] Furthermore, the adjustment mechanism also includes a first gear, which is rotatably connected to the frame. A first rack is slidably arranged on one side of the frame, and a first push rod is fixedly arranged on one side of the frame. The output end of the first push rod is fixedly connected to the first rack, and the first rack and the first gear mesh with each other.

[0009] Furthermore, a scraper is fixedly connected to the top of the fixed plate, the top surface height of the fixed plate and the scraper is adapted to the bottom surface height of the support bar when it rotates to the bottom, and the extension direction of the guide groove is adapted to the radial direction of the transmission shaft.

[0010] Furthermore, the adjustment mechanism also includes a fixed rod, an adjustment wheel is provided between the two connecting plates, the adjustment wheel is fixedly sleeved with the corresponding fixed rod, the bottom part of the adjustment wheel is located at an increased distance from the axis of the fixed rod, a telescopic rod is fixedly connected to the side of the support bar near the fixed rod, and a contact element is fixedly connected to one end of the telescopic rod.

[0011] Furthermore, the drive shaft is rotatably sleeved on the outside of the corresponding fixed rod, the axis of the fixed rod is collinear with the axis of the drive shaft, and the fixed plate is fixedly connected to the frame.

[0012] Furthermore, a driving block is provided on one side of the fixed plate, a connecting sleeve is fixedly connected to one side of the driving block, a clamping block is threaded onto one end of the connecting sleeve, two clamping plates are provided between the two transmission shafts, two guide strips are slidably sleeved on one side of the clamping plate, and the guide strips are fixedly connected to the corresponding end plates.

[0013] Furthermore, the drive block has an equal hexagonal cross-sectional shape and is rotatably connected to the frame, the connecting sleeve is rotatably connected to the frame, the guide strip is in sliding contact with the abutment block, and the clamping plate located on the side away from the drive block is fixedly connected to the frame.

[0014] Furthermore, the two sets of support bars are arranged coaxially, and the drive shafts of the two sets of support bars on the side closest to each other are fixedly connected in a collinear manner.

[0015] Furthermore, a second rack is slidably arranged on one side of the bottom of the frame, a second gear is arranged on one side of the drive block, the second gear is rotatably connected to the frame, a number of connecting rods are slidably sleeved on the second gear, and a rotating block is arranged on one side of the second gear;

[0016] The rotating block is fixedly connected to the connecting rod. A tension spring is fixedly connected to one side of the rotating block. One end of the tension spring is fixedly connected to the second gear. The second gear meshes with the second rack. A second push rod is fixedly installed on one side of the bottom of the frame. The output end of the second push rod is fixedly connected to the second rack. The connecting rod is slidably sleeved with the drive block.

[0017] The beneficial effects of this invention are as follows:

[0018] This application provides a laser cutting machine for processing sheet metal parts of electrical cabinets. The transmission shaft rotates in conjunction with the connecting block and guide groove to drive the connecting plate to rotate, thereby driving the support bar to rotate. When the support bar rotates past the fixed plate and scraper, the solidified slag on the top of the support bar is scraped and cleaned, ensuring the flatness of the support table formed by the support bar. This ensures the quality of the intelligent thermal cutting of sheet metal parts by the laser cutting machine. At the same time, after a period of use, the support bar used to support the thin metal sheet can be flipped and switched, thereby ensuring the flatness of the support table and extending the service life of the laser cutting machine.

[0019] Furthermore, the support bar can move radially along the drive shaft via the connecting block and guide groove when the clamping plate is loosened and the opposite end plate is pressed. This causes the spring to be compressed more by the portion of the spring that is pushed away from the drive shaft axis by the adjusting wheel. Combined with gravity, this causes the support bar and the fixed connecting structure to descend, increasing the distance from the drive shaft axis. This allows the support bar to compensate for the distance from the scraper when it rotates past the scraper, and to compensate for the height drop caused by the melting of the serrated tip when it rotates to the top. This further ensures the flatness of the support platform and extends the service life of the equipment. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort:

[0021] Figure 1This is a schematic diagram of the overall structure of this application;

[0022] Figure 2 This is a partial structural diagram of this application;

[0023] Figure 3 This is a schematic cross-sectional view of a portion of the structure at the end plate of this application;

[0024] Figure 4 For this application Figure 2 Enlarged view of the structure at point A in the image;

[0025] Figure 5 For this application Figure 2 Enlarged view of the structure at point B in the image;

[0026] Figure 6 For this application Figure 2 Enlarged view of the structure at point C in the image;

[0027] Figure 7 This is a partial structural diagram of the No. 2 gear in this application;

[0028] Figure 8 This is a schematic diagram of the structure of the support bar in this application.

[0029] In the diagram: 1. Frame; 2. Laser cutting assembly; 3. Support bar; 4. Connecting plate; 5. Connecting block; 6. Drive shaft; 7. Guide groove; 8. End plate; 9. Rack No. 1; 10. Gear No. 1; 11. Fixing plate; 12. Scraper; 13. Push rod No. 1; 14. Fixing rod; 15. Adjusting wheel; 16. Spring; 17. Contact element; 18. Telescopic rod; 19. Guide bar; 20. Connecting sleeve; 21. Clamping block; 22. Drive block; 23. Rack No. 2; 24. Gear No. 2; 25. Rotating block; 26. Connecting rod; 27. Push rod No. 2; 28. Clamping plate. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Example 1, as Figures 1-8A laser cutting machine for processing sheet metal parts of electrical cabinets includes a frame 1. A laser cutting mechanism 2 is installed on the top of the frame 1. The laser cutting mechanism 2 is used to move and cut flat metal sheets. Several fixed plates 11 are fixedly installed on the bottom inner side of the frame 1. A drive shaft 6 is installed on both sides of the top of the fixed plate 11. The drive shaft 6 is rotatably installed near the bottom of the frame 1. Several support bars 3 are installed at the bottom of the frame 1. The support bars 3 are arranged in pairs. Two connecting plates 4 are fixedly connected between two support bars 3. The connecting plates 4 are fixedly connected to the end faces of the corresponding two support bars 3 and are symmetrically arranged about the center plane of a set of support bars 3. The two corresponding support bars 3 are symmetrically arranged about the center plane of the drive shaft 6. The side of the support bar 3 away from the axis of the drive shaft 6 is serrated to support the metal sheet.

[0032] Several sets of support bars 3 are arranged at even intervals on the inner side of the frame 1. Two end plates 8 are provided between the two corresponding drive shafts 6. The two end plates 8 are arranged on both sides of the corresponding support bar 3. The support bar 3 and the connecting plate 4 are fixedly connected to the corresponding end plates 8. The drive shaft 6 is connected to the corresponding connecting plate 4. The drive shaft 6 can drive the connecting plate 4 to rotate around the axis of the drive shaft 6. A first gear 10 is provided on one side of the fixed plate 11. The first gear 10 is rotatably set near the bottom of the frame 1. A first rack 9 is slidably provided on one side of the frame 1. The first rack 9 can slide horizontally without disengaging from the frame 1.

[0033] A push rod 13 is fixedly installed on one side of the frame 1. The push rod 13 is an electric push rod and its output end is fixedly connected to a rack 9. The rack 9 and the gear 10 mesh with each other. (See reference...) Figure 8 A scraper 12 is fixedly connected to the top of the fixed plate 11. The top of the scraper 12 is serrated and matches the shape of the serrated part of the support bar 3. The top surface height of the fixed plate 11 and the scraper 12 matches the bottom surface height of the support bar 3 when it is rotated to the bottom. The scraper 12 is used to cooperate with the fixed plate 11 to scrape off the slag from the serrated part of the support bar 3.

[0034] The top support bar 3 of several sets of support bars 3 cooperate to form a support platform. During operation, the workpiece is hoisted by the conveying mechanism and placed on the top of the support bar 3. The laser cutting component 2 cuts the metal sheet into shape. After a certain interval, after the workpiece is hoisted away from the top of the support bar 3, the first push rod 13 extends or shortens, which drives the first rack 9 to move horizontally. The movement of the first rack 9 drives the corresponding first gear 10 to rotate. The first gear 10 drives the corresponding transmission shaft 6 to rotate. The transmission shaft 6 drives the connecting plate 4 to rotate, so that the corresponding support bar 3, connecting plate 4 and end plate 8 rotate as a whole around the axis of the transmission shaft 6. The support bar 3 rotates and passes through the fixed plate 11 and scraper 12 in sequence. At this time, the sawtooth part of the support bar 3 rotates to the bottom. The solidified slag away from the axis of the transmission shaft 6 is scraped off by the fixed plate 11 to avoid too much slag solidifying on the top of the sawtooth, which would increase the height of the top surface when the support bar 3 rotates to the top of the transmission shaft 6.

[0035] Next, the fixing plate 11 scrapes away the solidified slag between the saw teeth, preventing the slag from being blocked and accumulating during subsequent processing, thus completing the intelligent laser cutting and self-cleaning operation of the sheet metal parts. After the laser cutting machine has been used for a period of time, the first push rod 13 moves and drives the support bar 3 to flip, so that the support bar 3 located at the bottom of a set of support bars 3 is switched to the top, and the support bar 3 used to support the metal sheet is switched, thereby increasing the overall area of ​​the support bars 3 that can participate in supporting the metal sheet without increasing the single support area, thereby extending the service life of the support table composed of support bars 3.

[0036] Example 2, as Figures 1-7 Based on Embodiment 1, a connecting block 5 is fixedly sleeved on one side of the drive shaft 6 inside the connecting plate 4. Guide grooves 7 are provided on both sides of the connecting plate 4. The connecting block 5 is slidably sleeved with the corresponding guide groove 7, so that the connecting plate 4 can move relative to the connecting block 5 in the extension direction of the guide groove and the connecting block 5 can drive the connecting plate 4 to rotate around the axis of the drive shaft 6. The extension direction of the guide groove 7 is adapted to the radial direction of the drive shaft 6. A fixing rod 14 is provided on the top of the fixing plate 11. The drive shaft 6 is rotatably sleeved on the outside of the corresponding fixing rod 14. The axis of the fixing rod 14 is collinear with the axis of the drive shaft 6.

[0037] Both ends of the fixed plate 11 are fixedly connected to the frame 1. An adjusting wheel 15 is provided between the two connecting plates 4. The adjusting wheel 15 is configured as a cam and is fixedly sleeved with the corresponding fixed rod 14. The part of the adjusting wheel 15 away from the axis of the fixed rod 14 is located at the bottom of the adjusting wheel 15. A telescopic rod 18 is fixedly connected to the side of the support bar 3 near the fixed rod 14. One end of the telescopic rod 18 is fixedly connected to a contact member 17. The telescopic rod 18 can extend and retract in the radial direction of the fixed rod 14. For example, the telescopic rod 18 can be composed of an inner rod and an outer rod. The inner rod is slidably sleeved on the inner side of the outer rod. The outer rod is fixedly connected to the support bar 3, and the inner rod is fixedly connected to the contact member 17.

[0038] Preferably, the contact element 17 is configured as a rolling contact element. For example, the contact element 17 includes a movable seat and a rolling bearing. The inner ring of the rolling bearing is fixedly connected to the movable seat, and the movable seat is fixedly connected to the telescopic end of the telescopic rod 18, so that the contact element 17 contacts the adjusting wheel 15 in a rolling manner. A drive block 22 is provided on one side of the fixed plate 11. (See reference...) Figure 6 The drive block 22 is rotatably connected to the frame 1. The drive block 22 is movably disposed on the outside of the transmission shaft 6. The cross-sectional shape of the drive block 22 is an equal hexagon. A connecting sleeve 20 is fixedly connected to one side of the drive block 22. The connecting sleeve 20 is rotatably connected to the frame 1. (See reference...) Figure 5 The connecting sleeve 20 is movably sleeved with the drive shaft 6 and one end is threaded with a clamping block 21.

[0039] Two clamping plates 28 are provided between the two drive shafts 6. The two clamping plates 28 are located on the side of the corresponding end plate 8 away from the connecting plate 4. They are used to limit the radial relative position of the end plate 8 and the drive shaft 6 by the clamping force between the clamping plates 28 and the end plate 8. Two guide strips 19 are slidably sleeved on one side of the clamping plate 28. The guide strips 19 are in slidable contact with the abutment block 21. The guide strips 19 are fixedly connected to the corresponding end plate 8. The clamping plate 28 located on the side away from the drive block 22 is fixedly connected to the frame 1. The clamping plate 28 on the side corresponding to the drive block 22 is located between the abutment block 21 and the corresponding end plate 8. The guide strips 19 can drive the clamping plate 28, the abutment block 21 and the end plate 8 to drive synchronously. The drive shaft 6 is movably connected to the end plate 8 and the clamping plate 28.

[0040] After long-term use, the serrated part of the support bar 3 will also be melted by the laser cutting when it is in the cutting path of the laser cutting component 2. As a result, the melted serrated part flows down under the action of gravity, causing the height of the serrated part to decrease. After a certain period of time, the top height of the support bar 3 needs to be adjusted.

[0041] When adjusting the top height of the support bar 3 to be switched to, the drive block 22 is turned with a screwing tool. The drive block 22 drives the connecting sleeve 20 to rotate. The rotation of the connecting sleeve 20 causes the clamping block 21 to move axially away from the clamping plate 28 under the limit of the guide bar 19. The two clamping plates 28 release their clamping on the support bar 3, connecting plate 4, and end plate 8 as a whole. At this time, because the contact 17 corresponding to the support bar 3 switched to the bottom is closer to the corresponding support bar 3 relative to the corresponding contact 17 at the top under the pressure of the adjusting wheel 15, the compression of the bottom spring 16 is greater. Thus, the gravity overcomes the elastic force of the spring 16 at the top and pushes the support bar 3 and its fixed connected structure down until the support bar 3 at the bottom contacts the fixing plate 11, thereby compensating for the distance from the serrated part of the bottom support bar 3 to the axis of the drive shaft 6.

[0042] Next, the drive block 22 is turned, causing the drive block 22 to drive the clamping block 21 to move closer to the corresponding end plate 8. The clamping block 21 drives the corresponding clamping plate 28 to move, thereby reducing the distance between the two clamping plates 28. This causes the two clamping plates 28 to contact the end plate 8 on the corresponding side, thereby clamping the end plate 8 and the fixedly connected structure. This restricts the radial movement of the support bar 3 and the connecting plate 4 relative to the drive shaft 6. Then, the first push rod 13 is activated, driving the support bar 3 and its connected structure to flip. This rotates the support bar 3, after height compensation, around the axis of the drive shaft 6 to the top, thereby reducing the height difference between the support platform formed by the corresponding support bar 3 and the initial height due to melting and falling. This compensates for the height difference between the platform formed at the corresponding location and other parts, improving the quality of the intelligent cutting operation of the laser cutting machine.

[0043] Simultaneously, the compensation operation will switch to the bottom support bar 3, which is highly worn or deformed due to melting during the cutting process, for reuse, further extending the service life of the laser cutting machine. To ensure accuracy, the compensation process can be repeated multiple times for the same support bar 3. The corresponding contact part 17 of the support bar 3 switched to the bottom is driven to rotate to the bottom of the adjusting wheel 15 by the telescopic rod 18, ready for the next round of height compensation operation. Since the switching process has a long cycle and not all support bars 3 are simultaneously damaged by melting, this operation can be carried out in conjunction with the support bar 3 switching operation with a long cycle. After height compensation, the support bar 3 can rotate back and forth in a shorter cycle to cooperate with the fixed plate 11 and scraper 12 for cleaning operations, ensuring the support height accuracy of the support bar 3. Since the distance between the serrated part of the support bar 3 and the axis of the transmission shaft 6 increases after height adjustment, the contact distance between the serrated part and the scraper 12 is also ensured, ensuring the scraping effect of the scraper 12 on the adjusted support bar 3.

[0044] Example 3, as Figures 1-8 Based on Example 2, refer to Figure 8The two sets of support bars 3 are arranged coaxially, that is, the number of support bars 3 corresponding to a single fixed plate 11 is set to two sets. The transmission shafts 6 of the two sets of support bars 3 are fixedly connected in a collinear manner on the side close to each other. The end plates 8 of the two sets of support bars 3 can be pressed together in a radially staggered manner, thereby cooperating with the clamping plates 28 located on both sides of the two sets of support bars 3 to complete the relative radial fixation.

[0045] When compensating for the height of the support bar 3, the clamping block 21 is released from its clamping position on the corresponding clamping plate 28, and the clamping on the two sets of support bars 3 is released. The end plates 8 corresponding to the two sets of support bars 3 can be separated and move radially under the cooperation of the corresponding two connecting blocks 5 and guide grooves 7 to compensate for the height of the serrated part. When the clamping plate 28 is clamped by the clamping block 21, the end plate 8 is clamped with the adjacent end plate 8 or clamping plate 28, and the relative fixation with the drive shaft 6 is completed. This increases the number of areas of the support table formed by the support bars 3 that can be adjusted at one time, and improves the adjustment accuracy of the support table.

[0046] Example 4, as Figures 1-6 Based on Embodiment 3, a second rack 23 is slidably arranged on one side of the bottom of the frame 1, and a second gear 24 is arranged on one side of the drive block 22. The second gear 24 is rotatably connected to the frame 1. Several connecting rods 26 are slidably sleeved near the outer side of the second gear 24. The second gear 24 is movably sleeved with the transmission shaft 6. A rotating block 25 is arranged on one side of the second gear 24. The rotating block 25 is movably arranged on the outer side of the transmission shaft 6 and fixedly connected to the connecting rods 26. A tension spring is fixedly connected to one side of the rotating block 25. One end of the tension spring is fixedly connected to the second gear 24 and is used to drive the rotating block 25 closer to the second gear 24. The second gear 24 and the second rack 23 mesh with each other. A second push rod 27 is fixedly arranged on one side of the bottom of the frame 1. The output end of the second push rod 27 is fixedly connected to the second rack 23 and is used to drive the second rack 23 to move horizontally. The connecting rod 26 is slidably sleeved with the drive block 22. The end of the connecting rod 26 can be set as tapered.

[0047] During operation, push rod 27 drives rack 23 to move, which in turn drives several gears 24 to rotate synchronously. Gears 24 drive connecting rod 26 to rotate, which in turn drives drive block 22 to rotate. Drive block 22 drives clamping block 21 to move axially, adjusting clamping force of clamping plate 28. This allows for simultaneous adjustment of the distance from support bar 3 to drive shaft 6 axis at multiple positions. When push rod 13 moves, push rod 27 moves synchronously, driving gears 24 and gear 10 to rotate at the same angular velocity, preventing drive block 22 from rotating relative to each other.

[0048] After adjusting the second push rod 27 as needed, the rotating block 25 can be moved away from the second gear 24 to drive the connecting rod 26 to disengage from the drive block 22. While maintaining the position of the rotating block 25, the drive block 22 can be turned to adjust the clamping force of the corresponding clamping plate 28 individually. When the second gear 24 rotates later, the end of the connecting rod 26 will re-engage with the drive block 22 when it passes through the corresponding socket of the drive block 22. This allows the laser cutting machine to simultaneously adjust and compensate for the support height of multiple sets of support bars 3 when they are at the top, further improving the flexibility and reliability of the laser cutting machine.

[0049] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A laser cutting machine for processing sheet metal parts of electrical cabinets, comprising a frame (1), wherein a plurality of support bars (3) are provided at the bottom of the frame (1), characterized in that, The bottom of the inner side of the frame (1) is fixedly provided with several fixed plates (11), and the top of the fixed plates (11) is provided with transmission shafts (6) on both sides. The support bars (3) are arranged in pairs, and two connecting plates (4) are fixedly connected between the two support bars (3). Two end plates (8) are provided between the corresponding two transmission shafts (6). The frame (1) also includes an adjustment mechanism. The adjustment mechanism includes a connecting block (5), and guide grooves (7) are provided on both sides of the connecting plate (4). The adjustment mechanism can drive the support bar (3) to rotate around the axis of the transmission shaft (6) and switch the support bar located at the top. The adjustment mechanism is used to switch the radial fixed state of the end plate (8) and the transmission shaft (6). When the support bar (3) is at the bottom, the relative fixation between the end plate (8) and the transmission shaft (6) can be removed. The corresponding support bar (3) changes its distance to the axis of the transmission shaft (6) in the radial direction through the relative sliding of the guide groove (7) and the connecting block (5).

2. The laser cutting machine for processing sheet metal parts of electrical cabinets according to claim 1, characterized in that, The top of the frame (1) is provided with a laser cutting assembly (2), the drive shaft (6) is rotatably connected to the frame (1), two corresponding support bars (3) are symmetrically arranged about the center plane of the drive shaft (6), the support bars (3) and the connecting plate (4) are fixedly connected to the corresponding end plate (8), and the connecting block (5) is fixedly sleeved with the drive shaft (6).

3. The laser cutting machine for processing sheet metal parts of electrical cabinets according to claim 1, characterized in that, The adjustment mechanism also includes a first gear (10), which is rotatably connected to the frame (1). A first rack (9) is slidably arranged on one side of the frame (1), and a first push rod (13) is fixedly arranged on one side of the frame (1). The output end of the first push rod (13) is fixedly connected to the first rack (9), and the first rack (9) and the first gear (10) mesh with each other.

4. The laser cutting machine for processing sheet metal parts of electrical cabinets according to claim 1, characterized in that, The top of the fixed plate (11) is fixedly connected to a scraper (12). The height of the top surface of the fixed plate (11) and the scraper (12) is adapted to the height of the bottom surface of the support bar (3) when it rotates to the bottom. The extension direction of the guide groove (7) is adapted to the radial direction of the transmission shaft (6).

5. A laser cutting machine for processing sheet metal parts of electrical cabinets according to claim 1, characterized in that, The adjustment mechanism also includes a fixed rod (14), and an adjustment wheel (15) is provided between the two connecting plates (4). The adjustment wheel (15) is fixedly sleeved with the corresponding fixed rod (14). The distance between the bottom part of the adjustment wheel (15) and the axis of the fixed rod (14) increases. A telescopic rod (18) is fixedly connected to the side of the support bar (3) near the fixed rod (14). A contact element (17) is fixedly connected to one end of the telescopic rod (18).

6. A laser cutting machine for processing sheet metal parts of electrical cabinets according to claim 5, characterized in that, The drive shaft (6) is rotatably sleeved on the outside of the corresponding fixed rod (14), the axis of the fixed rod (14) is collinear with the axis of the drive shaft (6), and the fixed plate (11) is fixedly connected to the frame (1).

7. A laser cutting machine for processing sheet metal parts of electrical cabinets according to claim 5, characterized in that, A drive block (22) is provided on one side of the fixed plate (11), and a connecting sleeve (20) is fixedly connected to one side of the drive block (22). A clamping block (21) is threaded onto one end of the connecting sleeve (20). Two clamping plates (28) are provided between the two drive shafts (6). Two guide strips (19) are slidably sleeved on one side of the clamping plate (28). The guide strips (19) are fixedly connected to the corresponding end plates (8).

8. A laser cutting machine for processing sheet metal parts of electrical cabinets according to claim 7, characterized in that, The drive block (22) has a hexagonal cross-section and is rotatably connected to the frame (1). The connecting sleeve (20) is rotatably connected to the frame (1). The guide strip (19) is in sliding contact with the abutment block (21). The clamping plate (28) located on the side away from the drive block (22) is fixedly connected to the frame (1).

9. A laser cutting machine for processing sheet metal parts of electrical cabinets according to claim 7, characterized in that, The two sets of support bars (3) are arranged coaxially, and the drive shafts (6) on the side of the two sets of support bars (3) are fixedly connected in a collinear manner.

10. A laser cutting machine for processing sheet metal parts of electrical cabinets according to claim 7, characterized in that, A second rack (23) is slidably provided on one side of the bottom of the frame (1), a second gear (24) is provided on one side of the drive block (22), the second gear (24) is rotatably connected to the frame (1), a number of connecting rods (26) are slidably sleeved on the second gear (24), and a rotating block (25) is provided on one side of the second gear (24). The rotating block (25) is fixedly connected to the connecting rod (26). A tension spring is fixedly connected to one side of the rotating block (25). One end of the tension spring is fixedly connected to the second gear (24). The second gear (24) meshes with the second rack (23). A second push rod (27) is fixedly installed on one side of the bottom of the frame (1). The output end of the second push rod (27) is fixedly connected to the second rack (23). The connecting rod (26) is slidably sleeved with the drive block (22).

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