A mold laser cutting machine

Abstract

The invention discloses a mold laser cutting machine, which belongs to the technical field of laser cutting machines. By setting a lifting mechanism and a servo motor, when the servo motor rotates clockwise, the first transmission bevel gear cooperates with the first steering bevel gear to drive the first rotating rod to rotate, so that the first rotating rod drives the lifting gear to rotate inside the accommodating cavity, and cooperates with the rack to push the lifting frame to move, and the lifting frame drives the slider to slide and descend in the groove opened on the surface of the guide rail. At the same time, the lifting frame presses down the hydraulic push rod through the connecting piece during the sliding process, and the hydraulic push rod contracts to drive the workbench rack to descend. When the servo motor rotates counterclockwise, the lifting frame rises, and at the same time, the hydraulic push rod can provide support for the lifting frame, so that its rising process can remain stable, and multiple workbench racks can be independently controlled to perform decentralized lifting, and the height of the workbench rack can be flexibly adjusted according to specific processing requirements to adapt to processing parts of different heights and shapes.

Description

Technical Field

[0001] The invention relates to the technical field of laser cutting machines, and in particular to a mold laser cutting machine. Background Art

[0002] Mould laser cutting machine is a kind of equipment specially used for cutting, processing and repairing in mould manufacturing. It combines laser technology and mechanical transmission technology, and is suitable for cutting various parts in mould manufacturing, performing precise cutting, grooving, drilling and other operations, as well as repairing and marking the mould surface.

[0003] The height adjustment range of the laser head refers to the distance range in which it can be raised and lowered. Generally, the lifting range of the laser head is about 50mm. This design enables the cutting head to be flexibly adjusted within a certain range to adapt to different materials and cutting requirements.

[0004] However, the height adjustment of the cutting head not only involves the lifting distance, but more importantly, it is necessary to ensure the accuracy and stability during the cutting process. Therefore, it is more common to keep the distance between the cutting head and the workpiece between 0.1-0.3mm. However, in the actual production process, when the height of the workpiece exceeds the adjustment range of the laser head, it is easy for the distance between the cutting head and the workpiece to be too small. In order to ensure the accuracy, the staff needs to adjust the position of the processing platform to adapt to the cutting operation of ultra-high workpieces. Most of the existing lifting platforms are integrated lifting, which cannot be flexibly adjusted according to workpieces of different heights and shapes. In addition, during the overall lifting process, if the workpiece is not fixed in advance, all workpieces on the platform will move, increasing the potential risk of interference with the accuracy of the cutting head. Summary of the invention

[0005] The purpose of the present invention is to propose a mold laser cutting machine to solve the problem that most of the existing lifting platforms are integrated lifting and cannot be flexibly adjusted according to workpieces of different heights and shapes, and during the overall lifting process, if the workpieces are not fixed in advance, all the workpieces on the platform will move, increasing the potential risk of interfering with the precision of the cutting head.

[0006] In order to achieve the above purpose, the present invention adopts the following technology: a mold laser cutting machine:

[0007] The mold laser cutting machine body includes a base, a plurality of workbench racks arranged equidistantly on the base, and a laser cutting head mounted on the workbench racks. The laser cutting head moves along the X, Y, and Z axis directions to cut the workpiece placed on the workbench racks. The two sides of at least two of the workbench racks are connected by a lifting mechanism. The lifting mechanism includes a lifting frame installed on both sides of the workbench racks, a guide rail for guiding the lifting of the lifting frame, and a hydraulic push rod for supporting the lifting frame. The lifting frame is connected to the hydraulic push rod through a connecting piece.

[0008] The lifting frame is lifted and lowered by a driving assembly, which includes a rack arranged in the lifting frame and a lifting gear meshing with the rack. When the lifting gear rotates, it cooperates with the rack to drive the lifting frame to move;

[0009] The lifting gear is driven to rotate by a servo motor mounted on the lifting frame, and the workbench rack drives the workpiece to rise and fall and stop through the opening and closing of the servo motor.

[0010] As a further description of the above technology a mold laser cutting machine:

[0011] Slide blocks are arranged on both sides of the lifting frame, and grooves which fit in with the slide blocks are arranged on the side walls of the two guide rails;

[0012] The two lifting frames are provided with accommodating chambers inside, a first rotating rod is rotatably connected between the two accommodating chambers, and the two lifting gears are both sleeved on the surface of the first rotating rod;

[0013] The output end of the servo motor is connected to the first transmission bevel gear, and the first rotating rod is sleeved with the first transmission bevel gear which meshes with the first steering bevel gear.

[0014] As a further description of the above technology a mold laser cutting machine:

[0015] The lifting frame is provided with a mounting frame, on which a first rotating sleeve rod and a second rotating sleeve rod distributed along the same vertical line are rotatably provided, and the second rotating sleeve rod is connected to the transmission mechanism;

[0016] The first transmission bevel gear is sleeved and mounted on the first rotating sleeve rod. The servo motor drives the first transmission bevel gear to rotate through the first rotating sleeve rod, and the servo motor switches the connection with the first rotating sleeve rod and the second rotating sleeve rod through the switching mechanism.

[0017] As a further description of the above technology a mold laser cutting machine:

[0018] The output end of the servo motor is provided with grooves on both sides, and the inner walls of the first rotating sleeve rod and the second rotating sleeve rod are provided with protrusions that match the grooves. After the protrusions are engaged with the grooves, the workbench rack drives the first rotating sleeve rod or the second rotating sleeve rod to rotate.

[0019] As a further description of the above technology a mold laser cutting machine:

[0020] The transmission mechanism comprises a plurality of driven wheels rotatably arranged on the mounting frame and a driving wheel connected to the second rotating sleeve rod, and a transmission belt for transmission is sleeved on the driving wheel and the plurality of driven wheels;

[0021] The mounting frame is also provided with a steering mechanism having the same number and corresponding position as the driven wheels, the steering mechanism comprising a combined frame arranged on the mounting frame and a second transmission bevel gear rotatably arranged in the middle of the combined frame, the second transmission bevel gear is connected to the driven wheels and rotates synchronously;

[0022] The second transmission bevel gear is provided with a workbench rack integrally formed between the two gears, which rotates together with the second transmission bevel gear to change the angle between the workbench racks.

[0023] As a further description of the above technology a mold laser cutting machine:

[0024] The mounting frame is provided with an adjusting groove, and the second rotating sleeve rod connected with the driving wheel is slidably embedded in the adjusting groove and fastened by bolts.

[0025] As a further description of the above technology a mold laser cutting machine:

[0026] The steering mechanism also includes two mounting seats arranged on the combined frame, on which a second rotating rod is rotatably mounted, and a second steering bevel gear meshing with the second transmission bevel gear is sleeved in the middle of the second rotating rod;

[0027] The two ends of the second rotating rod are sleeved with third transmission bevel gears meshing with the second transmission bevel gears on both sides. The third transmission bevel gears at both ends are arranged relatively to each other, so that the second transmission bevel gear meshing with the third transmission bevel gear and the workbench rack connected to the second transmission bevel gear rotate in opposite directions.

[0028] As a further description of the above technology a mold laser cutting machine:

[0029] The switching mechanism includes a rotating groove arranged on the lifting frame and a turntable rotatably embedded in the rotating groove. A steering motor with an output end connected to the center of the turntable is installed in the middle of the rotating groove. An installation chamber for loading a servo motor is provided on the turntable. The output end of the servo motor passes through the rotating groove to be connected to the first rotating sleeve rod and the second rotating sleeve rod respectively.

[0030] As a further description of the above technology a mold laser cutting machine:

[0031] An arc-shaped guide groove is provided on the surface of the rotating groove, and the output end of the servo motor passes through the guide groove and moves inside the guide groove.

[0032] In summary, due to the use of the above-mentioned technology, a mold laser cutting machine has the following beneficial effects:

[0033] 1. Through the provided lifting mechanism and servo motor, when the servo motor rotates clockwise, the first transmission bevel gear cooperates with the first steering bevel gear to drive the first rotating rod to rotate, so that the first rotating rod drives the lifting gear to rotate inside the accommodating cavity, and cooperates with the rack to push the lifting frame to move, and the lifting frame drives the slider to slide and descend in the groove opened on the surface of the guide rail. At the same time, the lifting frame presses the hydraulic push rod through the connecting piece during the sliding process, and the hydraulic push rod contracts to drive the workbench rack to descend. When the servo motor rotates counterclockwise, the lifting frame rises, and at the same time, the hydraulic push rod can provide support for the lifting frame, so that its rising process can remain stable. Multiple workbench racks can be independently controlled for decentralized lifting. The height of the workbench rack can be flexibly adjusted according to specific processing requirements to adapt to workpieces of different heights and shapes. When processing multiple workpieces of different heights, since the workbench rack is decentralized, the laser cutting head can be adjusted to the next processing position more quickly, which reduces waiting time and improves processing efficiency and accuracy.

[0034] 2. By setting up the steering mechanism and transmission mechanism, when there is a clampable protrusion on the edge of the workpiece, the steering mechanism and the transmission mechanism can cooperate to drive the worktable rack to clamp the edge of the workpiece, so as to achieve the purpose of fixing the workpiece during the lifting and processing. When the second transmission bevel gear rotates synchronously with the driven wheel, the second transmission bevel gear drives the second rotating rod to rotate under the restriction of the mounting seat through the second steering bevel gear. The third transmission bevel gears on both sides of the second rotating rod can drive the second transmission bevel gears on both sides to rotate in opposite directions, so that the angle between adjacent worktable racks is reduced and fits on the clampable protrusion of the workpiece, and the workpiece is always positioned during the lifting and cutting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 A schematic diagram of the three-dimensional structure of a mold laser cutting machine provided according to an embodiment of the present invention is shown;

[0036] Figure 2 A schematic diagram of a three-dimensional structure of a workbench rack in a fixed state according to an embodiment of the present invention is shown;

[0037] Figure 3 A schematic diagram of a three-dimensional structure of a workbench rack in a descending state according to an embodiment of the present invention is shown;

[0038] Figure 4A partial three-dimensional structural schematic diagram of a lifting mechanism provided according to an embodiment of the present invention is shown;

[0039] Figure 5 A partial three-dimensional cross-sectional structural schematic diagram of a lifting mechanism provided in an embodiment of the present invention is shown;

[0040] Figure 6 The embodiment provided according to the present invention shows Figure 5 A schematic diagram of the enlarged structure at A in the middle;

[0041] Figure 7 A schematic diagram of a top cross-sectional structure of a lifting mechanism provided according to an embodiment of the present invention is shown;

[0042] Figure 8 The embodiment provided according to the present invention shows Figure 7 A schematic diagram of the enlarged structure at B in the middle;

[0043] Fig. 9 A schematic diagram of a three-dimensional structure of a workbench rack in a staggered state according to an embodiment of the present invention is shown;

[0044] Fig.10 The embodiment provided according to the present invention shows Fig. 9 Schematic diagram of the enlarged structure at C in the middle;

[0045] Fig.11 A schematic diagram of a three-dimensional structure of a workbench rack in a clamping state according to an embodiment of the present invention is shown;

[0046] Fig.12 A partial three-dimensional structural schematic diagram of a transmission mechanism provided according to an embodiment of the present invention is shown;

[0047] Fig.13 A partial three-dimensional structural schematic diagram showing a connection state between a servo motor and a rotating sleeve rod according to an embodiment of the present invention is shown;

[0048] Fig.14 The embodiment provided according to the present invention shows Fig.13 Schematic diagram of the enlarged structure at D in the middle;

[0049] Fig.15 A partial three-dimensional structural schematic diagram of a switching mechanism provided according to an embodiment of the present invention is shown;

[0050] Fig.16 A schematic diagram of the three-dimensional structure of a mounting seat and a guide slot in a switching mechanism provided according to an embodiment of the present invention is shown;

[0051] Fig.17 A schematic diagram of the three-dimensional structure of a rotating sleeve rod provided according to an embodiment of the present invention is shown.

[0052] Legend:

[0053] 10. Mould laser cutting machine body; 11. Base; 12. Workbench rack; 121. Insert rod; 13. Laser cutting head;

[0054] 21. servo motor; 211. first rotating sleeve rod; 212. second rotating sleeve rod;

[0055] 30. Lifting mechanism; 31. Guide rail; 32. Lifting frame; 321. Sliding block; 322. Accommodating chamber; 323. Mounting frame; 33. Connecting piece; 34. Hydraulic push rod; 35. Driving assembly; 351. First rotating rod; 352. First steering bevel gear; 353. First transmission bevel gear; 354. Lifting gear; 355. Rack;

[0056] 40. Steering mechanism; 41. Assembly frame; 42. Second transmission bevel gear; 43. Mounting seat; 44. Second rotating rod; 45. Second steering bevel gear; 46. Third transmission bevel gear;

[0057] 50. Transmission mechanism; 51. Driving wheel; 52. Driven wheel; 53. Transmission belt; 54. Adjustment slot;

[0058] 60. Switching mechanism; 61. Rotating groove; 611. Guide groove; 62. Steering motor; 63. Turntable; 64. Installation chamber. DETAILED DESCRIPTION

[0059] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technology in the embodiments of the present invention, a mold laser cutting machine. 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 making creative work are within the scope of protection of the present invention.

[0060] In order to solve the problem that most of the existing lifting platforms are integral lifting and cannot be flexibly adjusted according to workpieces of different heights and shapes, and in the process of overall lifting, if the workpieces are not fixed in advance, all the workpieces on the platform will move, increasing the potential risk of interfering with the precision of the cutting head, the present invention proposes a mold laser cutting machine, such as Figure 1 - Fig.17 As shown:

[0061] The mold laser cutting machine body 10 includes a base 11, a plurality of workbench racks 12 arranged at equal intervals on the base 11, and a laser cutting head 13 mounted on the workbench racks 12. The laser cutting head 13 moves along the X, Y, and Z axis directions to cut the workpiece placed on the workbench racks 12. The interval between the nozzle of the laser cutting head 13 and the workpiece is 0.2-0.8mm, the start distance interval is 3mm-9mm, and the end distance interval is 0.5mm-5mm. Therefore, sufficient space needs to be reserved between the laser cutting head 13 and the workpiece.

[0062] The two sides of at least two workbench racks 12 are connected by a lifting mechanism 30, and the lifting mechanism 30 includes a lifting frame 32 installed on both sides of the workbench rack 12, a guide rail 31 for guiding the lifting frame 32 to rise and fall, and a hydraulic push rod 34 for supporting the lifting frame 32, and the lifting frame 32 is connected to the hydraulic push rod 34 through a connecting piece 33;

[0063] The lifting frame 32 is lifted and lowered by a driving assembly 35. The driving assembly 35 includes a rack 355 disposed inside the lifting frame 32 and a lifting gear 354 meshing with the rack 355. When the lifting gear 354 rotates, it cooperates with the rack 355 to drive the lifting frame 32 to move.

[0064] The lifting gear 354 is driven to rotate by the servo motor 21 mounted on the lifting frame 32, and the workbench rack 12 drives the workpiece to rise and fall and stop by the opening and closing of the servo motor 21;

[0065] Slide blocks 321 are provided on both sides of the lifting frame 32, and grooves that fit in with the slide blocks 321 are provided on the side walls of the two guide rails 31;

[0066] The two lifting frames 32 have a receiving chamber 322 formed inside, a first rotating rod 351 is rotatably connected between the two receiving chambers 322, and two lifting gears 354 are sleeved on the surface of the first rotating rod 351;

[0067] The output end of the servo motor 21 is connected to the first transmission bevel gear 353, and the first rotating rod 351 is sleeved with the first transmission bevel gear 353 which meshes with the first steering bevel gear 352;

[0068] After workpieces of different shapes and heights are placed on the independent workbench racks 12, a control instruction is sent to the servo driver of the servo motor 21 through the controller. The instruction is a CW / CCW (clockwise / counterclockwise) pulse instruction to control the servo motor 21 to rotate in a specified direction;

[0069] When the servo motor 21 rotates clockwise, the first transmission bevel gear 353 cooperates with the first steering bevel gear 352 to drive the first rotating rod 351 to rotate, so that the first rotating rod 351 drives the lifting gear 354 to rotate inside the accommodating cavity 322, and cooperates with the rack 355 to push the lifting frame 32 to move, and the lifting frame 32 drives the slider 321 to slide and descend in the groove provided on the surface of the guide rail 31. At the same time, during the sliding process, the lifting frame 32 presses the hydraulic push rod 34 through the connecting member 33, and the hydraulic push rod 34 contracts to drive the workbench rack 12 to descend;

[0070] When the servo motor 21 rotates counterclockwise, the lifting frame 32 rises, and at the same time, the hydraulic push rod 34 can provide support for the lifting frame 32 so that the lifting process can remain stable;

[0071] Through this design, multiple workbench racks 12 can be independently controlled for decentralized lifting, and the height of the workbench racks 12 can be flexibly adjusted according to specific processing requirements to adapt to workpieces of different heights and shapes. When processing multiple workpieces of different heights, since the workbench racks 12 are decentralized, the laser cutting head 13 can be adjusted to the next processing position more quickly, reducing waiting time and improving processing efficiency and accuracy.

[0072] When there is a protrusion that can be clamped at the edge of the workpiece, the steering mechanism 40 and the transmission mechanism 50 can cooperate to drive the worktable rack 12 to clamp the edge of the workpiece, so as to achieve the purpose of fixing the workpiece during the lifting and processing process. Fig.10 - Fig.13 As shown, a mounting frame 323 is provided on the lifting frame 32, and a first rotating sleeve rod 211 and a second rotating sleeve rod 212 distributed along the same vertical line are rotatably provided on the mounting frame 323, and the second rotating sleeve rod 212 is connected to the transmission mechanism 50;

[0073] The transmission mechanism 50 includes a plurality of driven wheels 52 rotatably mounted on the mounting frame 323 and a driving wheel 51 connected to the second rotating sleeve rod 212. A transmission belt 53 for transmission is sleeved on the driving wheel 51 and the plurality of driven wheels 52.

[0074] The mounting frame 323 is also provided with a steering mechanism 40 having the same number and corresponding position as the driven wheels 52. The steering mechanism 40 includes a combination frame 41 provided on the mounting frame 323 and a second transmission bevel gear 42 rotatably provided in the middle of the combination frame 41. The second transmission bevel gear 42 is connected to the driven wheel 52 and rotates synchronously.

[0075] The second transmission bevel gear 42 is provided with an insert rod 121, and a workbench rack 12 is integrally formed between the two insert rods 121. The insert rod 121 rotates together with the second transmission bevel gear 42 to change the angle between the workbench racks 12;

[0076] When the servo motor 21 drives the second rotating sleeve rod 212 to rotate, the second rotating sleeve rod 212 can drive the transmission belt 53 to move through the driving wheel 51, and drive all the driven wheels 52 meshing with it to rotate synchronously through the transmission belt 53, so that the second transmission bevel gear 42 is driven by the driven wheel 52 to rotate under the restriction of the assembly frame 41, and the insertion rod 121 set on the second transmission bevel gear 42 drives the workbench rack 12 to rotate, so as to achieve the purpose of adjusting the angle between adjacent workbench racks 12;

[0077] In order to ensure that the transmission belt 53 can be tightly meshed with all the driven wheels 52, as shown in FIG. Fig.14 As shown, an adjustment slot 54 is provided on the mounting frame 323, and the second rotating sleeve rod 212 connected to the driving wheel 51 is slidably embedded in the adjustment slot 54. When the transmission belt 53 is sleeved, the distance between the driving wheel 51 and the driven wheel 52 can be shortened through the adjustment slot 54, so that the transmission belt 53 can be sleeved on the driving wheel 51 and the driven wheel 52 more easily. After the sleeve is completed, the distance between the driving wheel 51 and the driven wheel 52 is increased, so that the transmission belt 53 can be straightened under the pull of the driving wheel 51, so as to achieve the purpose of making the transmission belt 53 closely mesh with the driving wheel 51 and the driven wheel 52. After the adjustment is completed, the driving wheel 51 is tightened by bolts not shown in the figure, so that it cannot slide in the adjustment slot 54 by itself;

[0078] Among them, Fig.10 As shown, the steering mechanism 40 further includes two mounting seats 43 arranged on the assembly frame 41, on which a second rotating rod 44 is rotatably mounted, and a second steering bevel gear 45 meshing with the second transmission bevel gear 42 is sleeved in the middle of the second rotating rod 44;

[0079] The second rotating rod 44 is sleeved with third transmission bevel gears 46 meshing with the second transmission bevel gears 42 at both sides. The third transmission bevel gears 46 at both ends are arranged opposite to each other, so that the second transmission bevel gear 42 meshing with the third transmission bevel gear 46 and the workbench rack 12 connected to the second transmission bevel gear 42 rotate in opposite directions;

[0080] When the second transmission bevel gear 42 rotates synchronously with the driven wheel 52, the second transmission bevel gear 42 drives the second rotating rod 44 to rotate under the restriction of the mounting seat 43 through the second steering bevel gear 45, and the third transmission bevel gears 46 on both sides of the second rotating rod 44 can drive the second transmission bevel gears 42 on both sides to rotate in opposite directions, so that the angle between adjacent workbench racks 12 is reduced and fits on the clampable protrusion of the workpiece, and the workpiece is always positioned during the lifting and cutting process. At the same time, when the workpiece is cut and removed from the workbench rack 12, the workbench rack 12 can be driven to continue rotating. Fig. 9As shown, when the included angle of adjacent workbench racks 12 is adjusted to 180°, the molten or vaporized material adhering to the workbench racks 12 during the auxiliary gas blowing process can be scraped off by the interlacing of the teeth. When the included angle of adjacent workbench racks 12 is adjusted to 360°, the adjacent workbench racks 12 on the other side can also be scraped off in an interlaced manner, thereby avoiding the adhesion of adhesives to the workbench racks 12 to cause unevenness, thereby affecting the focal position during laser cutting and affecting the cutting accuracy.

[0081] When placing the workpiece on the workbench rack 12, the angle between adjacent workbench racks 12 can also be adjusted to 180°. At this time, multiple workbench racks 12 are flat, and the staff can push the workpiece to slide on the flat workbench rack 12, thereby facilitating the staff to load the materials.

[0082] like Fig.15 As shown, the first transmission bevel gear 353 is sleeved and installed on the first rotating sleeve rod 211, and the servo motor 21 drives the first transmission bevel gear 353 to rotate through the first rotating sleeve rod 211, and the servo motor 21 switches the connection with the first rotating sleeve rod 211 and the second rotating sleeve rod 212 through the switching mechanism 60;

[0083] The switching mechanism 60 includes a rotating groove 61 provided on the lifting frame 32 and a rotating disk 63 rotatably embedded in the rotating groove 61. A steering motor 62 is mounted in the middle of the rotating groove 61 with an output end connected to the center of the rotating disk 63. The rotating disk 63 is provided with a mounting chamber 64 for loading the servo motor 21. The output end of the servo motor 21 passes through the rotating groove 61 to be connected to the first rotating sleeve rod 211 and the second rotating sleeve rod 212, respectively. Fig.16 As shown, an arc-shaped guide groove 611 is opened on the surface of the rotating groove 61, and the output end of the servo motor 21 passes through the guide groove 611 and moves inside the guide groove 611;

[0084] By starting the steering motor 62, the steering motor 62 drives the turntable 63 to rotate under the restriction of the rotating groove 61, and the turntable 63 drives the servo motor 21 to rotate through the installation chamber 64, and the servo motor 21 can be rotated out of the first rotating sleeve rod 211 and inserted into the second rotating sleeve rod 212, thereby realizing the function switching of the servo motor 21 lifting and the servo motor 21 rotating;

[0085] In order to ensure that the servo motor 21 can drive the first rotating sleeve rod 211 or the second rotating sleeve rod 212 to rotate normally after switching, Fig.14 and Fig.17As shown, grooves are provided on both sides of the output end of the servo motor 21, and the inner walls of the first rotating sleeve rod 211 and the second rotating sleeve rod 212 are provided with protrusions that match the grooves. After the protrusions are engaged with the grooves, the servo motor 21 drives the first rotating sleeve rod 211 or the second rotating sleeve rod 212 to rotate.

[0086] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes to a mold laser cutting machine and its inventive concept according to the technology of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A mold laser cutting machine, comprising a mold laser cutting machine body (10), the mold laser cutting machine body (10) comprising a base (11), a plurality of workbench racks (12) arranged equidistantly on the base (11), and a laser cutting head (13) mounted above the workbench racks (12), the laser cutting head (13) moving along the X, Y, and Z axis directions to cut a workpiece placed on the workbench racks (12), characterized in that: The two sides of at least two of the workbench racks (12) are connected via a lifting mechanism (30), the lifting mechanism (30) comprising a lifting frame (32) installed on both sides of the workbench rack (12), a guide rail (31) for guiding the lifting frame (32) to rise and fall, and a hydraulic push rod (34) for supporting the lifting frame (32), the lifting frame (32) being connected to the hydraulic push rod (34) via a connecting piece (33); The lifting frame (32) is lifted and lowered by a driving assembly (35), wherein the driving assembly (35) comprises a rack (355) disposed inside the lifting frame (32) and a lifting gear (354) meshing with the rack (355), wherein the lifting gear (354) cooperates with the rack (355) to drive the lifting frame (32) to move when the lifting gear (354) rotates; Slide blocks (321) are provided on both sides of the lifting frame (32), and grooves that fit in with the slide blocks (321) are provided on the side walls of the two guide rails (31); The two lifting frames (32) are provided with accommodating chambers (322) inside, a first rotating rod (351) is rotatably connected between the two accommodating chambers (322), and two lifting gears (354) are both sleeved on the surface of the first rotating rod (351); The lifting gear (354) is driven to rotate by a servo motor (21) mounted on the lifting frame (32), and the workbench rack (12) drives the workpiece to rise and fall and stop by opening and closing the servo motor (21); The output end of the servo motor (21) is connected to a first transmission bevel gear (353); the first rotating rod (351) is sleeved with a first transmission bevel gear (353) that meshes with the first steering bevel gear (352); The lifting frame (32) is provided with a mounting frame (323), and the mounting frame (323) is rotatably provided with a first rotating sleeve rod (211) and a second rotating sleeve rod (212) distributed along the same vertical line; The first transmission bevel gear (353) is sleeved and mounted on the first rotating sleeve rod (211), and the servo motor (21) drives the first transmission bevel gear (353) to rotate via the first rotating sleeve rod (211); Grooves are provided on both sides of the output end of the servo motor (21); protrusions matching the grooves are provided on the inner walls of the first rotating sleeve rod (211) and the second rotating sleeve rod (212); after the protrusions are engaged with the grooves, the workbench rack (12) drives the first rotating sleeve rod (211) or the second rotating sleeve rod (212) to rotate; The second rotating sleeve rod (212) is connected to a transmission mechanism (50), the transmission mechanism (50) comprising a plurality of driven wheels (52) rotatably arranged on a mounting frame (323) and a driving wheel (51) connected to the second rotating sleeve rod (212), a transmission belt (53) for transmission being sleeved on the driving wheel (51) and the plurality of driven wheels (52); The mounting frame (323) is also provided with steering mechanisms (40) having the same number and corresponding positions as the driven wheels (52), the steering mechanisms (40) comprising a combination frame (41) arranged on the mounting frame (323) and a second transmission bevel gear (42) rotatably arranged in the middle of the combination frame (41), the second transmission bevel gear (42) being connected to the driven wheels (52) and rotating synchronously; The second transmission bevel gear (42) is provided with an insertion rod (121), a workbench rack (12) is integrally formed between the two insertion rods (121), and the insertion rod (121) rotates together with the second transmission bevel gear (42) to change the angle between the workbench racks (12); The servo motor (21) switches connection with the first rotating sleeve rod (211) and the second rotating sleeve rod (212) through a switching mechanism (60). The switching mechanism (60) comprises a rotating groove (61) arranged on the lifting frame (32) and a rotating disk (63) rotatably embedded in the rotating groove (61). A steering motor (62) having an output end connected to the center of the rotating disk (63) is mounted in the middle of the rotating groove (61). A mounting chamber (64) for loading the servo motor (21) is arranged on the rotating disk (63). The output end of the servo motor (21) passes through the rotating groove (61) to be connected to the first rotating sleeve rod (211) and the second rotating sleeve rod (212) respectively.

2. A mold laser cutting machine according to claim 1, characterized in that: The mounting frame (323) is provided with an adjustment slot (54), and a second rotating sleeve rod (212) connected to the driving wheel (51) is slidably embedded in the adjustment slot (54) and fastened by bolts.

3. A mold laser cutting machine according to claim 1, characterized in that: The steering mechanism (40) further comprises two mounting seats (43) arranged on the assembly frame (41), a second rotating rod (44) being rotatably mounted on the mounting seats (43), and a second steering bevel gear (45) meshing with the second transmission bevel gear (42) being sleeved on the middle portion of the second rotating rod (44); The second rotating rod (44) is sleeved with third transmission bevel gears (46) at both ends thereof, which are meshed with the second transmission bevel gears (42) at both ends. The third transmission bevel gears (46) at both ends are arranged relative to each other, so that the second transmission bevel gear (42) meshed with the third transmission bevel gear (46) and the workbench rack (12) connected to the second transmission bevel gear (42) rotate in opposite directions.

4. A mold laser cutting machine according to claim 1, characterized in that: An arc-shaped guide groove (611) is provided on the surface of the rotating groove (61), and the output end of the servo motor (21) passes through the guide groove (611) and moves inside the guide groove (611).

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