Three-dimensional three-axis carving device

Abstract

The utility model discloses a three-dimensional three-axis carving device which comprises a bottom plate and a working table, and a carving plate is arranged on the working table. A Z-axis driving module is arranged at one end of the bottom plate, a machine head assembly is fixed to the Z-axis driving module, and a water-cooled laser in the machine head assembly is fixed to the upper portion of the engraving plate so as to engrave materials in the engraving plate; an X-axis supporting plate assembly is arranged at one end of the workbench, and a Y-axis supporting plate assembly is arranged on the X-axis supporting plate assembly. According to the three-axis three-dimensional carving machine, the X-axis supporting plate assembly and the Y-axis supporting plate assembly drive the carving plate containing the materials to move in the X-axis direction and the Y-axis direction, the workbench can be driven by the Z-axis motor to drive the materials to move in the Z-axis direction, and therefore three-axis three-dimensional carving is achieved, and the three-axis three-dimensional carving machine is suitable for various materials with the three-axis carving requirement. And the water-cooled laser device is fixedly mounted, so that mechanical jitter generated in the water-cooled laser device is very small, and the engraving precision and stability are improved.

Description

Technical Field:

[0001] The utility model relates to the technical field of laser engraving machines, and particularly refers to a three-axis three-dimensional engraving device. Background Art:

[0002] A laser engraving machine is a high-tech product with a very high technical content in terms of the integration of optics, mechanics, and electronics. In the mid- to early 1990s, with the successful research and development of laser engraving technology, the engraving industry began to develop rapidly.

[0003] The laser engraving machine generates laser through a laser, which is transmitted by a transmitting mirror and irradiated onto the processing material through a focusing mirror, causing the point to melt and vaporize rapidly due to high temperature. By moving the laser head, the cutting effect can be achieved. Compared with the traditional manual engraving method, laser engraving can also make the engraving effect very delicate, not inferior to the manual engraving process level, and is applied in many industries.

[0004] However, most of the current laser engraving machines on the market generally achieve the movement of the laser head within a certain range to perform engraving operations. For example, the patent application with the patent publication number CN220943696U discloses a laser engraving machine with a material separation structure, which includes: a laser engraving machine housing, a safety door is movably installed on the laser engraving machine housing, a workbench is fixedly installed on the tabletop of the laser engraving machine housing, a moving component is fixedly installed on the inner wall of the laser engraving machine housing, a moving seat is slidably installed on the moving component, a laser cutting head is fixedly installed on the moving seat, an internal moving group is fixedly installed on the inner wall of the laser engraving machine housing, and an internal moving seat is slidably installed on the internal moving group. Through the setting of a blower and a suction head, the blower and the suction head are used at the bottom side of the workbench to suck away the debris and dust generated by the laser cutting head during cutting, thereby preventing the paper debris and dust from affecting the laser cutting inside the laser engraving machine housing, ensuring the normal use of the equipment, and improving the stability of the equipment.

[0005] However, this existing laser engraving machine has the following deficiencies due to its own structural design characteristics:

[0006] 1. In this technical solution, by setting two Y-axis slide rails plus one X-axis slide rail (the moving component in the comparative document), the laser cutting head is slidably arranged on the X-axis slide rail, and the material on the workbench is engraved by moving the laser cutting head. There will be a problem that the laser cutting head will inevitably generate mechanical vibration during movement, thus affecting the engraving accuracy; in addition, the laser cutting head can only perform two-axis movement in the X-axis and Y-axis through its moving component, and does not have the ability of three-axis engraving.

[0007] 2. The workbench in this technical solution is arranged inside the housing of the laser engraving machine. However, the space inside the housing of the laser engraving machine is often very limited, making it difficult to engrave materials that are large in size and heavy in weight.

[0008] In view of this, the inventor proposes the following technical solution. Utility Model Content:

[0009] The purpose of this utility model is to overcome the deficiencies of the prior art and provide a three-axis three-dimensional engraving device.

[0010] To solve the above technical problems, this utility model adopts the following technical solution: A three-axis three-dimensional engraving device, comprising: a bottom plate and a workbench arranged above the bottom plate. A carving plate for placing materials is arranged on the workbench; One end of the bottom plate is provided with a Z-axis drive module for driving the workbench to lift in the Z-axis direction. A machine head assembly is fixed on the Z-axis drive module, and the water-cooled laser in the machine head assembly is fixed above the carving plate to engrave the materials in the carving plate; One end of the workbench is provided with an X-axis support plate assembly for driving the carving plate to move in the X-axis direction in a detachable manner. A Y-axis support plate assembly for driving the carving plate to move in the Y-axis direction is arranged on the X-axis support plate assembly in a slidable manner.

[0011] Furthermore, in the above technical solution, the Z-axis drive module includes a first straight support plate and a second straight support plate fixed on the bottom plate, a top connecting plate connected between the first straight support plate and the second straight support plate, a Z-axis motor seat connected between the first straight support plate and the second straight support plate and located below the top connecting plate, a Z-axis motor installed on the Z-axis motor seat, a first Z-axis slide rail and a second Z-axis slide rail arranged between the bottom plate and the Z-axis motor seat, and a lifting lead screw connected between the Z-axis motor and the bottom plate and used to helically drive the workbench to lift. The workbench is connected to the first Z-axis slide rail and the second Z-axis slide rail in a vertically liftable manner.

[0012] Furthermore, in the above technical solution, the workbench includes a first support plate and a second support plate, a first slider arranged on the first support plate and matching with the first Z-axis slide rail, a second slider arranged on the second support plate and matching with the second Z-axis slide rail, and a copper sleeve seat and a lifting platform fixed between the first support plate and the second support plate. A lead screw copper sleeve matching with the lifting lead screw and driven by the Z-axis motor to lift is arranged in the copper sleeve seat. The lifting platform is located at one end away from the lead screw copper sleeve, and the lifting platform is driven by the lead screw copper sleeve to lift synchronously.

[0013] Furthermore, in the above technical solution, the head assembly includes a head fixing plate disposed on the upper end surface of the Z-axis driving module, a water-cooled laser and a heat dissipation plate mounted on the head fixing plate, and a galvanometer mount mounted on the water-cooled laser and used to cooperate with the water-cooled laser to reflect the laser.

[0014] Furthermore, in the above technical solution, the first slide rail group includes a first concave slide rail and a second concave slide rail fixed to the bottom plate. A first groove is formed on the first concave slide rail, and a second groove is formed on the second concave slide rail. The first pulley and the second pulley are respectively slidably engaged in the first groove and the second groove. The second slide rail group includes a third concave slide rail and a fourth concave slide rail fixed to the bottom plate. A third groove is formed on the third concave slide rail, and a fourth groove is formed on the fourth concave slide rail. The third pulley and the fourth pulley are respectively slidably engaged in the third groove and the fourth groove.

[0015] Furthermore, in the above technical solution, a first counterweight assembly for assisting in the lifting balance of the light protection cover assembly is disposed beside the first slide rail group, and a second counterweight assembly for assisting in the lifting balance of the light protection cover assembly is disposed beside the second slide rail group. The first counterweight assembly includes a first optical rod fixing bracket connected between the first slide rail group and the first straight support plate, two first optical rods disposed on the first optical rod fixing bracket, a first belt disposed on the first straight support plate, and a first counterweight block fixed to the first belt and capable of lifting up and down with the first belt. The two first optical rods are located on both sides of the first counterweight block and limit the first counterweight block. The second counterweight assembly includes a second optical rod fixing bracket connected between the second slide rail group and the second straight support plate, two second optical rods disposed on the second optical rod fixing bracket, a second belt disposed on the second straight support plate, and a second counterweight block fixed to the second belt and capable of lifting up and down with the second belt. The two second optical rods are located on both sides of the second counterweight block and limit the second counterweight block.

[0016] Furthermore, in the above technical solution, the X-axis support plate assembly includes a first X-axis slide rail and a second X-axis slide rail, a first limiting member and a second limiting member respectively disposed on the first X-axis slide rail and the second X-axis slide rail and used to limit the Y-axis support plate assembly, a first motor fixing bar and a first pulley fixing bar connected between the first X-axis slide rail and the second X-axis slide rail, an X-axis driving motor mounted on the first motor fixing bar, an X-axis pulley mounted on the first pulley fixing bar, and an X-axis belt disposed between the X-axis driving motor and the X-axis pulley and used to drive the Y-axis support plate assembly to slide.

[0017] Furthermore, in the above technical solution, the Y-axis platen assembly includes a first Y-axis slide rail and a second Y-axis slide rail for the engraving plate to slide back and forth, a fixed square block connected between the first Y-axis slide rail and the second Y-axis slide rail and used to strengthen the structural strength, a second motor fixing bar and a second pulley fixing bar connected between the first Y-axis slide rail and the second Y-axis slide rail, a Y-axis driving motor installed on the second motor fixing bar, a Y-axis pulley installed on the second pulley fixing bar, and a Y-axis belt disposed between the Y-axis driving motor and the Y-axis pulley and used to drive the engraving plate to slide.

[0018] Furthermore, in the above technical solution, a control main board for controlling the operation of the device is provided on one side of the bottom plate. A power supply component for supplying power to the device is provided beside the control main board. The control main board and the power supply component are surrounded by a machine case and a rear cover plate for preventing foreign objects from entering the interior. An exhaust hole is formed on the rear cover plate. Correspondingly, an exhaust fan for heat dissipation is also provided on the rear cover plate; a top cover for preventing foreign objects from entering the interior is provided on the head assembly.

[0019] Furthermore, in the above technical solution, a first slide rail group and a second slide rail group are provided on both sides of the Z-axis driving module; a light protection cover assembly for avoiding light and blocking foreign objects is liftably provided on the first slide rail group and the second slide rail group; the light protection cover assembly includes a first light protection cover covering the periphery of the workbench and used for avoiding light and blocking foreign objects, a first pulley seat and a second pulley seat provided on the first light protection cover, a first pulley and a second pulley respectively provided on both sides of the first pulley seat, and a third pulley and a fourth pulley respectively provided on both sides of the second pulley seat.

[0020] After adopting the above technical solution, the present utility model has the following beneficial effects compared with the prior art: In the present utility model, the X-axis platen assembly and the Y-axis platen assembly drive the engraving plate containing the material to move in the X-axis direction and the Y-axis direction, and the workbench can also drive the material to move in the Z-axis direction through the Z-axis motor drive, so as to realize three-axis three-dimensional engraving, which is applicable to various materials with three-axis engraving requirements. In addition, compared with the existing structure, the present utility model can directly drive the material to move through the movement of the X-axis platen assembly and the Y-axis platen assembly, so that the water-cooled laser can be fixedly installed, avoiding the movement of the water-cooled laser and generating very little mechanical vibration inside. It can not only improve the accuracy, stability and freedom during engraving, but also reduce the floor area of the device. Description of the Drawings:

[0021] Figure 1 is the internal structure schematic diagram of the present utility model;

[0022] Figure 2 is Figure 1 the enlarged view of part A in

[0023] Figure 3 is a three-dimensional schematic diagram of the present utility model;

[0024] Figure 4 is a schematic diagram of the usage state of the present utility model;

[0025] Figure 5 is a schematic diagram of the usage state of the present utility model with the light protection cover assembly removed;

[0026] Figure 6 is a three-dimensional schematic diagram of the Z-axis drive module in the present utility model;

[0027] Figure 7 is a three-dimensional schematic diagram of the workbench in the present utility model;

[0028] Figure 8 is a three-dimensional schematic diagram of the machine head assembly in the present utility model;

[0029] Figure 9 is a three-dimensional schematic diagram of the Y-axis support plate assembly in the present utility model;

[0030] Figure 10 is a three-dimensional schematic diagram of the X-axis support plate assembly in the present utility model. Specific embodiments:

[0031] The present utility model will be further described below in conjunction with specific embodiments and the accompanying drawings.

[0032] As shown in Figures 1 to 10 , a three-dimensional three-axis engraving device is provided, which includes: a bottom plate 1 and a workbench 3 arranged above the bottom plate 1. A engraving plate 101 for placing materials is arranged on the workbench 3; a Z-axis drive module 2 for driving the workbench 3 to lift in the Z-axis direction is arranged at one end of the bottom plate 1. A machine head assembly 5 is fixed on the Z-axis drive module 2, and a water-cooled laser 52 in the machine head assembly 5 is fixed above the engraving plate 101 to engrave the materials in the engraving plate 101; an X-axis support plate assembly 6 for driving the engraving plate 101 to move in the X-axis direction is arranged at one end of the workbench 3 in a detachable manner, and a Y-axis support plate assembly 7 for driving the engraving plate 101 to move in the Y-axis direction is arranged on the X-axis support plate assembly 6 in a slidable manner. Among them, a water-cooling box 521 for cooling the water-cooled laser 52 is also connected beside the water-cooled laser 52. In the present utility model, the water-cooled laser 52 installed on the machine head fixing plate 51 is fixed and does not move. The engraving plate 101 containing materials is driven to move in the X-axis direction and the Y-axis direction by the X-axis support plate assembly 6 and the Y-axis support plate assembly 7, and the workbench 3 can also drive the materials to move in the Z-axis direction through the drive of the Z-axis motor 25, so as to realize three-axis three-dimensional engraving, which is applicable to various materials with three-axis engraving requirements; at the same time, as shown in Figure 4 and Figure 5As shown in the figure, the shape of the present utility model is generally C-shaped, enabling the engraving plate 101 to move significantly and extensively between the water-cooled laser 52 and the workbench 3 driven by the X-axis support plate assembly 6 and the Y-axis support plate assembly 7, rather than being limited to engraving inside the equipment. Therefore, the present utility model can easily engrave materials with large size and heavy weight.

[0033] In this embodiment, a screw rod lifting mechanism is adopted to drive the workbench 3 to move in the Z-axis direction. Specifically, the Z-axis drive module 2 includes a first straight support plate 21 and a second straight support plate 22 fixed to the bottom plate 1, a top connection plate 23 connected between the first straight support plate 21 and the second straight support plate 22, a Z-axis motor base 24 connected between the first straight support plate 21 and the second straight support plate 22 and located below the top connection plate 23, a Z-axis motor 25 installed on the Z-axis motor base 24, a first Z-axis slide rail 201 and a second Z-axis slide rail 202 arranged between the bottom plate 1 and the Z-axis motor base 24, and a lifting screw rod 26 connected between the Z-axis motor 25 and the bottom plate 1 and used to helically drive the workbench 3 to lift. The workbench 3 is connected to the first Z-axis slide rail 201 and the second Z-axis slide rail 202 in a manner that can be lifted up and down. The workbench 3 includes a first support plate 31 and a second support plate 32, a first slider 301 arranged on the first support plate 31 and matching with the first Z-axis slide rail 201, a second slider 302 arranged on the second support plate 32 and matching with the second Z-axis slide rail 202, and a copper sleeve seat 33 and a lifting table 34 fixed between the first support plate 31 and the second support plate 32. A screw rod copper sleeve 35 matching with the lifting screw rod 26 and driven by the Z-axis motor 25 to lift is arranged in the copper sleeve seat 33. The lifting table 34 is located at one end far from the screw rod copper sleeve 35, and the lifting table 34 is driven by the screw rod copper sleeve 35 to lift synchronously. In addition, in actual applications, replacing the matching structure of the screw rod and the nut with a lifting mechanism such as an oil cylinder guide rod structure or a gear and rack structure is also applicable.

[0034] The light protection cover assembly 8 includes a first light protection cover 81 covering the periphery of the workbench 3 and used for avoiding light and blocking foreign objects, a first pulley seat 82 and a second pulley seat 83 arranged on the first light protection cover 81, a first pulley 801 and a second pulley 802 respectively arranged on both sides of the first pulley seat 82, and a third pulley 803 and a fourth pulley 804 respectively arranged on both sides of the second pulley seat 83. In addition, a hand-held position 815 convenient for lifting by the human hand is also arranged on the first light protection cover 81.

[0035] The machine head assembly 5 includes a machine head fixing plate 51 arranged on the upper end face of the Z-axis drive module 2, a water-cooled laser 52 and a heat dissipation plate 53 installed on the machine head fixing plate 51, and a galvanometer frame 54 installed on the water-cooled laser 52 and used to cooperate with the water-cooled laser 52 to reflect laser light.

[0036] A first counterweight assembly 91 for assisting in the lifting balance of the light shielding cover assembly 8 is arranged beside the first slide rail group 41, and a second counterweight assembly 92 for assisting in the lifting balance of the light shielding cover assembly 8 is arranged beside the second slide rail group 42; the first counterweight assembly 91 includes a first optical rod fixing bracket 910 connected between the first slide rail group 41 and the first straight support plate 21, two first optical rods 911 arranged on the first optical rod fixing bracket 910, a first belt 901 arranged on the first straight support plate 21, and a first counterweight block 9010 fixed to the first belt 901 and capable of moving up and down with the first belt 901. The two first optical rods 911 are located on both sides of the first counterweight block 9010 to limit the first counterweight block 9010; the second counterweight assembly 92 includes a second optical rod fixing bracket 920 connected between the second slide rail group 42 and the second straight support plate 22, two second optical rods 921 arranged on the second optical rod fixing bracket 920, a second belt 902 arranged on the second straight support plate 22, and a second counterweight block 9020 fixed to the second belt 902 and capable of moving up and down with the second belt 902. The two second optical rods 921 are located on both sides of the second counterweight block 9020 to limit the second counterweight block 9020. In this embodiment, the setting of the first counterweight block 9010 and the second counterweight block 9020 helps to improve the stability of the light shielding cover assembly 8 during use. Specifically, when the light shielding cover assembly 8 is lifted to the highest point, the first counterweight block 9010 and the second counterweight block 9020 will fall to contact the bottom plate 1 and stay, so as to avoid accidentally closing and damaging the product, and also helps to improve the opening and closing feel.

[0037] The first slide rail group 41 includes a first concave slide rail 411 and a second concave slide rail 412 fixed to the bottom plate 1. A first groove 4110 is formed on the first concave slide rail 411, and a second groove 4120 is formed on the second concave slide rail 412. The first pulley 801 and the second pulley 802 are respectively slidably fitted in the first groove 4110 and the second groove 4120; the second slide rail group 42 includes a third concave slide rail 423 and a fourth concave slide rail 424 fixed to the bottom plate 1. A third groove 4230 is formed on the third concave slide rail 423, and a fourth groove 4240 is formed on the fourth concave slide rail 424. The third pulley 803 and the fourth pulley 804 are respectively slidably fitted in the third groove 4230 and the fourth groove 4240.

[0038] The X-axis pallet assembly 6 includes a first X-axis slide rail 61 and a second X-axis slide rail 62, a first limiting member 610 and a second limiting member 620 respectively arranged on the first X-axis slide rail 61 and the second X-axis slide rail 62 and used for limiting the Y-axis pallet assembly 7, a first motor fixing bar 63 and a first pulley fixing bar 64 connected between the first X-axis slide rail 61 and the second X-axis slide rail 62, an X-axis driving motor 65 installed on the first motor fixing bar 63, an X-axis pulley 66 installed on the first pulley fixing bar 64, and an X-axis belt 67 arranged between the X-axis driving motor 65 and the X-axis pulley 66 and used for driving the Y-axis pallet assembly to slide.

[0039] The Y-axis pallet assembly 7 includes a first Y-axis slide rail 71 and a second Y-axis slide rail 72 for the engraving plate 101 to slide back and forth, fixing blocks 730 respectively arranged on the first Y-axis slide rail 71 and the second Y-axis slide rail 72 and used for strengthening the structural strength, a second motor fixing bar 73 and a second pulley fixing bar 74 connected between the first Y-axis slide rail 71 and the second Y-axis slide rail 72, a Y-axis driving motor 75 installed on the second motor fixing bar 73, a Y-axis pulley 76 installed on the second pulley fixing bar 74, and a Y-axis belt 77 arranged between the Y-axis driving motor 75 and the Y-axis pulley 76 and used for driving the engraving plate 101 to slide.

[0040] On one side of the bottom plate 1, there is a control main board 11 for controlling the operation of the device. A power supply component 12 for supplying power to the device is arranged beside the control main board 11. A machine shell 13 and a rear cover plate 14 for preventing foreign objects from entering the interior are provided around the control main board 11 and the power supply component 12. An exhaust hole 15 is formed on the rear cover plate 14. Correspondingly, an exhaust fan 16 for heat dissipation is also arranged on the rear cover plate 14. A top cover 17 for preventing foreign objects from entering the interior is provided on the machine head assembly 5. In addition, a partition 18 is also arranged between the control main board 11 and the workbench 3. The partition 18 can separate the workbench 3 from the control main board 11, the power supply component 12, etc., so as to avoid a large amount of debris generated during the operation of the device from entering the interior of the control main board 11 and causing equipment failures.

[0041] In summary, in the present utility model, the engraving plate 101 containing materials is driven to move in the X-axis direction and the Y-axis direction by the X-axis pallet assembly 6 and the Y-axis pallet assembly 7, and the workbench 3 can also drive the materials to move in the Z-axis direction through the Z-axis motor 25, so as to realize three-axis three-dimensional engraving, which is applicable to various materials with three-axis engraving requirements. In addition, compared with the existing structure, the present utility model can directly drive the materials to move through the movement of the X-axis pallet assembly 6 and the Y-axis pallet assembly 7, so that the water-cooled laser 52 can be fixedly installed, avoiding the movement of the water-cooled laser 52, and generating very little mechanical vibration inside. It can not only improve the accuracy, stability and freedom during engraving, but also reduce the floor area of the device.

[0042] Certainly, the above are only specific embodiments of the present utility model and do not limit the scope of implementation of the present utility model. Any equivalent changes or modifications made according to the structure, features and principles described in the scope of the patent application of the present utility model shall be included within the scope of the patent application of the present utility model.

Claims

1. A three-dimensional three-axis engraving device, comprising: A bottom plate (1) and a workbench (3) arranged above the bottom plate (1), characterized in that: A carving plate (101) for placing materials is arranged on the workbench (3); A Z-axis driving module (2) for driving the workbench (3) to move up and down in the Z-axis direction is arranged at one end of the base plate (1); a head assembly (5) is fixed on the Z-axis driving module (2); and a water-cooled laser (52) in the head assembly (5) is fixed above the engraving plate (101) to engrave the material in the engraving plate (101); An X-axis support plate assembly (6) for driving the engraving plate (101) to move in the X-axis direction is detachably arranged at one end of the workbench (3); a Y-axis support plate assembly (7) for driving the engraving plate (101) to move in the Y-axis direction is slidably arranged on the X-axis support plate assembly (6).

2. A three-dimensional three-axis engraving device according to claim 1, characterized in that: The Z-axis driving module (2) comprises a first straight support plate (21) and a second straight support plate (22) fixed on the bottom plate (1), a top connecting plate (23) connected between the first straight support plate (21) and the second straight support plate (22), a Z-axis motor seat (24) connected between the first straight support plate (21) and the second straight support plate (22) and located below the top connecting plate (23), a Z-axis motor (25) mounted on the Z-axis motor seat (24), a first Z-axis slide rail (201) and a second Z-axis slide rail (202) arranged between the bottom plate (1) and the Z-axis motor seat (24), and a lifting screw (26) connected between the Z-axis motor (25) and the bottom plate (1) and used for spirally driving the workbench (3) to rise and fall, wherein the workbench (3) is connected to the first Z-axis slide rail (201) and the second Z-axis slide rail (202) in a manner that allows it to rise and fall.

3. A three-dimensional three-axis engraving device according to claim 2, characterized in that: The workbench (3) comprises a first support plate (31) and a second support plate (32), a first slider (301) arranged on the first support plate (31) and matched with the first Z-axis slide rail (201), a second slider (302) arranged on the second support plate (32) and matched with the second Z-axis slide rail (202), and a copper sleeve seat (33) and a lifting platform (34) fixed between the first support plate (31) and the second support plate (32); a screw copper sleeve (35) matched with the lifting screw (26) and driven by the Z-axis motor (25) to be lifted and lowered is arranged in the copper sleeve seat (33); the lifting platform (34) is located at one end away from the screw copper sleeve (35), and the lifting platform (34) is driven by the screw copper sleeve (35) to be lifted and lowered synchronously.

4. A three-dimensional three-axis engraving device according to claim 1, characterized in that: The machine head assembly (5) comprises a machine head fixing plate (51) arranged on the upper end surface of the Z-axis driving module (2), a water-cooled laser (52) and a heat sink (53) mounted on the machine head fixing plate (51), and a galvanometer frame (54) mounted on the water-cooled laser (52) and used to cooperate with the water-cooled laser (52) to reflect laser light.

5. The three-dimensional three-axis engraving device according to claim 1, characterized in that: A first slide rail group (41) and a second slide rail group (42) are arranged on both sides of the Z-axis driving module (2); a light shield assembly (8) for shielding light and blocking foreign objects is arranged on the first slide rail group (41) and the second slide rail group (42) in a liftable manner; the light shield assembly (8) comprises a first light shield (81) arranged on the periphery of the workbench (3) and used for shielding light and blocking foreign objects, a first pulley seat (82) and a second pulley seat (83) arranged on the first light shield (81), a first pulley (801) and a second pulley (802) respectively arranged on both sides of the first pulley seat (82), and a third pulley (803) and a fourth pulley (804) respectively arranged on both sides of the second pulley seat (83).

6. A three-dimensional three-axis engraving device according to claim 5, characterized in that: The first slide rail group (41) comprises a first concave slide rail (411) and a second concave slide rail (412) fixed on the bottom plate (1); the first concave slide rail (411) is formed with a first groove (4110); the second concave slide rail (412) is formed with a second groove (4120); the first pulley (801) and the second pulley (802) are respectively slidably engaged in the first groove (4110) and the second groove (4120). The second slide rail group (42) includes a third concave slide rail (423) and a fourth concave slide rail (424) fixed on the bottom plate (1); the third concave slide rail (423) is formed with a third groove (4230), and the fourth concave slide rail (424) is formed with a fourth groove (4240); the third pulley (803) and the fourth pulley (804) are respectively slidably engaged in the third groove (4230) and the fourth groove (4240).

7. The three-dimensional three-axis engraving device according to claim 5, characterized in that: A first counterweight assembly (91) for assisting the lifting and lowering balance of the light shield assembly (8) is arranged beside the first slide rail assembly (41), and a second counterweight assembly (92) for assisting the lifting and lowering balance of the light shield assembly (8) is arranged beside the second slide rail assembly (42); the first counterweight assembly (91) comprises a first light rod fixing frame (910) connected between the first slide rail assembly (41) and the first straight support plate (21), two first light rods (911) arranged on the first light rod fixing frame (910), a first belt (901) arranged on the first straight support plate (21), and a first counterweight block (9010) fixed to the first belt (901) and capable of being lifted up and down with the first belt (901). ), and the two first polished rods (911) are located on both sides of the first counterweight block (9010) and limit the first counterweight block (9010); the second counterweight assembly (92) includes a second polished rod fixing frame (920) connected between the second slide rail group (42) and the second straight support plate (22), two second polished rods (921) arranged on the second polished rod fixing frame (920), a second belt (902) arranged on the second straight support plate (22), and a second counterweight block (9020) fixed to the second belt (902) and capable of rising and falling with the second belt (902), and the two second polished rods (921) are located on both sides of the second counterweight block (9020) and limit the second counterweight block (9020).

8. The three-dimensional three-axis engraving device according to claim 3, characterized in that: The X-axis support assembly (6) comprises a first X-axis slide rail (61) and a second X-axis slide rail (62), a first limiting member (610) and a second limiting member (620) respectively arranged on the first X-axis slide rail (61) and the second X-axis slide rail (62) and used for limiting the Y-axis support assembly (7), a first motor fixing bar (63) and a first pulley fixing bar (64) connected between the first X-axis slide rail (61) and the second X-axis slide rail (62), an X-axis driving motor (65) installed on the first motor fixing bar (63), an X-axis pulley (66) installed on the first pulley fixing bar (64), and an X-axis belt (67) arranged between the X-axis driving motor (65) and the X-axis pulley (66) and used for driving the Y-axis support assembly (7) to slide.

9. A three-dimensional three-axis engraving device according to claim 8, characterized in that: The Y-axis support plate assembly (7) comprises a first Y-axis slide rail (71) and a second Y-axis slide rail (72) for the engraving plate (101) to slide back and forth, a fixed block (730) connected between the first Y-axis slide rail (71) and the second Y-axis slide rail (72) and used to enhance the structural strength, a second motor fixing bar (73) and a second pulley fixing bar (74) connected between the first Y-axis slide rail (71) and the second Y-axis slide rail (72), a Y-axis driving motor (75) mounted on the second motor fixing bar (73), a Y-axis pulley (76) mounted on the second pulley fixing bar (74), and a Y-axis belt (77) arranged between the Y-axis driving motor (75) and the Y-axis pulley (76) and used to drive the engraving plate (101) to slide.

10. A three-dimensional three-axis engraving device according to any one of claims 1 to 9, characterized in that: A control main board (11) for controlling the operation of the device is arranged on one side of the base plate (1), and a power supply unit (12) for supplying power to the device is arranged on the side of the control main board (11). The control main board (11) and the power supply unit (12) are covered with a housing (13) and a rear cover (14) for preventing foreign matter from entering the interior. An exhaust hole (15) is formed on the rear cover (14), and an exhaust fan (16) for heat dissipation is also arranged on the rear cover (14) correspondingly. A top cover (17) for preventing foreign matter from entering the interior is arranged on the upper cover of the head assembly (5).

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