Laser engraving machine

Abstract

The utility model provides a laser engraving machine. The laser engraving machine comprises a machine box, a laser device, an optical mechanism, an imaging mechanism and a fixing mechanism, the optical mechanism is arranged above the imaging mechanism and located on one side of the laser emitting end of the laser. The fixing mechanism comprises a clamp rotationally arranged on the machine box and a plurality of angle blocks arranged on the clamp and used for clamping workpieces. The imaging mechanism is arranged above the clamp flange plate; when the laser engraving machine is used, laser beams emitted by the laser device are reflected by the optical mechanism and focused on the surface of a workpiece on the angle block, laser engraving machining of the workpiece is achieved, and the imaging mechanism emits illumination light to the workpiece and collects a production image when the laser machine does not work. And meanwhile, the imaging center, at the imaging mechanism, of the workpiece on the angle block is coaxial with the engraving center of the workpiece, so that the workpiece can be subjected to laser engraving machining without displacement after being positioned, the workpieces on the angle blocks can be conveniently machined by rotating the clamp, and the machining efficiency is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of laser processing equipment, in particular to a laser engraving machine. Background Art

[0002] With the progress of technology, laser engraving technology has been widely used in many fields such as art creation, industrial design, and manufacturing due to its high precision, high efficiency, and wide adaptability. For example, for machining chip-breaking grooves of superhard material tools such as polycrystalline diamond (PCD), polycrystalline cubic boron nitride (PCBN), and diamond, the complex shape of the chip-breaking groove can be finely engraved to meet the requirements of tool design.

[0003] However, traditional laser engraving machines are often bulky, complex to operate, time-consuming and laborious, and it is difficult to meet the needs of desktop-level and batch automation use. Therefore, it is of great significance to develop a desktop laser engraving machine that is small and compact, easy to operate, has high precision, and can be processed batch by automation. Summary of the Utility Model

[0004] Aiming at the deficiencies in the prior art, the utility model provides a laser engraving machine to solve the technical problems in the related art that traditional laser engraving machines are often bulky, complex to operate, time-consuming and laborious, and it is difficult to meet the needs of desktop-level and batch automation use.

[0005] The utility model provides a laser engraving machine, which includes a chassis and a laser, an optical mechanism, an imaging mechanism, and a fixing mechanism arranged on the chassis;

[0006] The optical mechanism is arranged above the imaging mechanism and on one side of the laser emission end of the laser;

[0007] The fixing mechanism includes a fixture rotatably arranged on the chassis and a plurality of angle blocks arranged on the fixture and used for clamping workpieces;

[0008] The imaging mechanism is arranged above the flange of the fixture and is used for imaging illumination and image acquisition on the surface of the workpiece;

[0009] Wherein, the optical mechanism reflects and focuses the laser beam emitted by the laser onto the surface of the workpiece on an angle block to realize laser engraving processing of the workpiece.

[0010] Further, the optical mechanism includes a beam expander, an imaging adapter, a dichroic mirror, a galvanometer scanner, and a field lens arranged in sequence, and the beam expander is arranged on one side of the laser emission end of the laser.

[0011] Further, the beam expander is connected to the laser through a flange, and an installation groove for installing a sealing ring is provided on the flange. A sealing sleeve is provided between the beam expander and the imaging adapter.

[0012] Further, the imaging mechanism includes an imaging light source and an imaging camera. The imaging light source is arranged below the field lens, the imaging camera is arranged at the bottom of the imaging adapter, and the dichroic mirror is arranged inside the imaging adapter and reflects the illumination light of the imaging light source reflected by the galvanometer scanner to the imaging camera.

[0013] Further, the imaging light source includes an annular top light source and a strip-shaped back light source. The annular top light source is arranged at the bottom of the field lens and has a workpiece avoidance hole, and the strip-shaped back light source is arranged below the fixture.

[0014] Further, a strip-shaped magnet is arranged in each of the angle blocks.

[0015] Further, the bottom of the fixture is connected to a rotation module to drive the fixture to rotate through the rotation module.

[0016] Further, a driving mechanism is further included. The driving mechanism includes an X-axis linear module, a Y-axis linear module, and a Z-axis lifting module. The X-axis linear module is arranged on the moving end of the Y-axis linear module, or the Y-axis linear module is arranged on the moving end of the X-axis linear module. The X-axis linear module or the Y-axis linear module is arranged on the lifting end of the Z-axis lifting module, and the rotation module is arranged on the moving end of the X-axis linear module or the Y-axis linear module.

[0017] Further, both the X-axis linear module and the Y-axis linear module include a base, a lead screw motor arranged on the base, a top seat arranged on the moving end of the lead screw motor, an in-slot slide rail group arranged in the base, an out-of-slot slide rail group arranged on the top seat, and a cylindrical roller group. The cylindrical roller group is respectively slidably connected to the in-slot slide rail group and the out-of-slot slide rail group.

[0018] Further, the Z-axis lifting module includes a bottom plate arranged on the chassis, side plates mirror-symmetrically arranged on both sides of the bottom plate, a lifting motor arranged on one side plate, a side slide rail group arranged on the other side plate, a top plate slidably connected to the side slide rail group, a bottom slide rail group arranged on the bottom plate, a middle plate slidably connected to the bottom slide rail group and connected to the moving end of the lifting motor, and a middle slide rail group arranged on the top plate. The middle slide rail group is slidably connected to the middle plate, and the X-axis linear module or the Y-axis linear module is arranged on the top of the top plate.

[0019] Compared with the prior art, the utility model has the following beneficial effects:

[0020] When the laser engraving machine of the present utility model is in use, the laser beam emitted by the laser is reflected and focused on the surface of the workpiece on the angle block by the optical mechanism, so as to realize the laser engraving processing of the workpiece. And when the laser is not working, the imaging mechanism emits illumination light to the workpiece and collects and generates an image. At the same time, the imaging center of the workpiece on the angle block at the imaging mechanism is coaxial with the engraving center of the workpiece, so that the workpiece can be laser engraved without shifting after positioning. And by rotating the fixture, it is convenient to process the workpieces on multiple angle blocks, effectively improving the processing efficiency.

[0021] In the laser engraving machine of the present utility model, the red light outside the bar-shaped backlight source in the imaging mechanism blocked by the workpiece to be processed is reflected and returned to the main optical path, and then vertically enters the imaging system through the action of the dichroic mirror, and then is sensed by the sensing element in the imaging mechanism to generate an image, which is used for visual grasping of the workpiece during the processing to realize batch processing.

[0022] By rotating and arranging the fixture and several angle blocks and cooperating with the driving mechanism, the laser engraving machine of the present utility model can realize the automatic engraving processing of a single workpiece or multiple workpieces in the same batch, effectively improving the working efficiency.

[0023] The laser engraving machine of the present utility model has a compact body and a small floor area, and is suitable for being placed on a desktop for use. Description of the Drawings

[0024] Figure 1 is an exploded structural schematic diagram of a laser engraving machine according to an embodiment of the present utility model Figure 1 ;

[0025] Figure 2 is an exploded structural schematic diagram of a laser engraving machine according to an embodiment of the present utility model Figure 2 ;

[0026] Figure 3 is a structural schematic diagram of a laser engraving machine according to an embodiment of the present utility model;

[0027] Figure 4 is a sectional structural schematic diagram of the optical mechanism and the imaging mechanism in a laser engraving machine according to an embodiment of the present utility model;

[0028] Figure 5 is a top view structural schematic diagram of the fixture in a laser engraving machine according to an embodiment of the present utility model;

[0029] Figure 6 is a sectional structural schematic diagram of the fixture in a laser engraving machine according to an embodiment of the present utility model;

[0030] Figure 7 is a structural schematic diagram of the driving mechanism in a laser engraving machine according to an embodiment of the present utility model;

[0031] Figure 8 Schematic diagram of the structure of the X-axis linear module or Y-axis linear module in a laser engraving machine according to an embodiment of the present utility model;

[0032] Figure 9 Schematic sectional view of the structure of the X-axis linear module or Y-axis linear module in a laser engraving machine according to an embodiment of the present utility model;

[0033] Figure 10 Schematic diagram of the structure of the Z-axis lifting module in a laser engraving machine according to an embodiment of the present utility model;

[0034] Figure 11 Schematic sectional view of the structure of the Z-axis lifting module in a laser engraving machine according to an embodiment of the present utility model;

[0035] Explanation of the reference numerals in the drawings:

[0036] 1. Chassis; 101. Protective sheet metal cover; 102. L-shaped door; 103. Laser protection window; 104. Door handle; 105. Sheet metal rear cover; 106. Air cooling system; 107. Maintenance door; 108. Dust collection device; 109. Industrial control computer; 110. Anti-slip floor feet;

[0037] 2. Laser;

[0038] 3. Optical mechanism; 301. Beam expander; 302. Imaging adapter; 303. Dichroic mirror; 304. Galvo scanner; 305. Field lens; 306. Flange; 307. Sealing sleeve;

[0039] 4. Imaging mechanism; 401. Ring top light source; 402. Imaging camera; 403. Strip backlight; 404. Top light source switch adjustment knob; 405. Backlight switch adjustment knob; 406. Adjusting member;

[0040] 5. Fixing mechanism; 501. Fixture; 502. Angle block; 503. Strip magnet; 504. Tension bolt;

[0041] 6. Driving mechanism; 601. X-axis linear module; 602. Y-axis linear module; 611. Base; 612. Lead screw motor; 613. Top seat; 614. Inner groove slide rail group; 615. Outer groove slide rail group; 616. Cylindrical roller group; 617. Sensor; 618. Bolt;

[0042] 603. Z-axis lifting module; 631. Bottom plate; 632. Side plate; 633. Lifting motor; 634. Side guide rail group; 635. Top plate; 636. Bottom guide rail group; 637. Middle plate; 638. Middle guide rail group; 639. Limit sensor; 640. Limit bolt; 641. Sliding anti-collision block;

[0043] 604. Rotating module.

[0044] The realization, functional features and advantages of the purpose of the present utility model will be further described in conjunction with the embodiments with reference to the accompanying drawings. Detailed implementation manners

[0045] In order to make the purpose, technical solutions and beneficial effects of the present utility model clearer, the technical solutions in the present utility model will be further described below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0046] In the description of the present utility model, it should be noted that the structures, ratios, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those who are familiar with this technology to understand and read, and are not used to limit the limited conditions under which the present utility model can be implemented. Therefore, they do not have technical essential meanings. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects that the present utility model can produce and the purposes that can be achieved, should still fall within the scope that can be covered by the technical content disclosed in the present utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" cited in this specification are only for the convenience of clear description and are not used to limit the scope under which the present utility model can be implemented. The change or adjustment of their relative relationships, without substantial change of the technical content, should also be regarded as the scope under which the present utility model can be implemented.

[0047] As Figures 1-3 shown, the embodiment of the present utility model provides a laser engraving machine, including a chassis 1 and a laser 2, an optical mechanism 3, an imaging mechanism 4 and a fixing mechanism 5 arranged on the chassis 1; the optical mechanism 3 is arranged above the imaging mechanism 4 and on one side of the laser emission end of the laser 2; the fixing mechanism 5 includes a fixture 501 rotatably arranged on the chassis 1 and a plurality of angle blocks 502 arranged on the fixture 501 and used for clamping workpieces. In this embodiment, 20 angle blocks 502 are taken as an example; the imaging mechanism 4 is arranged above the fixture 501 and is used for imaging illumination and image acquisition on the surface or contour of the workpiece; wherein, the optical mechanism 3 reflects and focuses the laser beam emitted by the laser 2 onto the surface of the workpiece on an angle block 502 to realize laser engraving processing of the workpiece.

[0048] In the embodiment of the present utility model, during use, the laser beam emitted by the laser 2 is reflected and focused onto the workpiece surface on the angle block 502 by the optical mechanism 3, realizing laser engraving processing of the workpiece. The imaging mechanism 4 emits illumination light to the workpiece and acquires and generates an image when the laser machine is not working. At the same time, the imaging center of the workpiece on the angle block 502 at the imaging mechanism 4 is coaxial with the engraving center of the workpiece, so that the workpiece can be laser engraved without being displaced after positioning. Moreover, by rotating the fixture 501, it is convenient to process the workpieces on multiple angle blocks 502, effectively improving the processing efficiency.

[0049] Specifically, as Figure 1 shown, in the embodiment of the present utility model, the chassis 1 is composed of an aluminum alloy frame overlapping multiple plates. The chassis 1 is also provided with a protective sheet metal cover 101, an L-shaped door 102, a laser protection window 103, a door handle 104, a sheet metal rear cover 105, an air cooling system 106, a maintenance door 107, a dust collection device 108, an industrial control computer 109, etc. It is convenient to place multiple workpieces on several angle blocks 502 through the L-shaped door 102. At the same time, the laser protection window 103 is convenient for viewing and protection during processing. Four anti-slip feet 110 are also provided at the bottom of the chassis 1, and the four anti-slip feet 110 are respectively located at the four corners of the bottom of the chassis 1 to improve the moving stability and flexibility of the laser engraving machine.

[0050] Specifically, as Figure 4 shown, in the embodiment of the present utility model, the optical mechanism 3 includes a beam expander 301, an imaging adapter 302, a dichroic mirror 303, a galvanometer 304, and a field lens 305 arranged in sequence. The beam expander 301 is arranged on one side of the laser emission end of the laser 2. The imaging mechanism 4 is arranged in the left processing area of the chassis 1, that is, below the main optical path, and is parallel to the processing optical path. Such a design not only maximizes the space utilization rate, but also makes the overall equipment more compact and small, and at the same time makes the adjustment process more convenient and fast. Specifically, the laser beam generated by the laser source enters the imaging adapter 302 after passing through the beam expander 301, reaches the galvanometer 304 via the dichroic mirror 303 (incident at 45°, laser transmittance ≥ 98%, imaging light reflectance ≥ 90%). By controlling the angles of the two reflecting mirrors inside the galvanometer 304, the direction of the laser beam can be changed, and after being focused by the field lens 305, it acts on the workpiece surface.

[0051] Specifically, as Figure 4 shown, in the embodiment of the present utility model, the beam expander 301 is connected to the laser 2 through a flange 306, and an installation groove for installing a sealing ring is provided on the flange 306. A sealing sleeve 307 is arranged between the beam expander 301 and the imaging adapter 302. By installing the sealing ring and the sealing sleeve 307, dust can be effectively prevented from entering, and at the same time, to a certain extent, the laser beam can also be prevented from overflowing.

[0052] Specifically, as Figure 4 shown, in the embodiment of the present utility model, the imaging mechanism 4 includes an imaging light source and an imaging camera 402. The imaging light source is arranged below the field lens 305, the imaging camera 402 is arranged at the bottom of the imaging adapter 302, the dichroic mirror 303 is arranged in the imaging adapter 302 and reflects the illumination light of the imaging light source reflected by the galvanometer scanner 304 to the imaging camera 402. The red light reflected after the imaging light source irradiates the surface of the workpiece to be processed or the red light other than that blocked by the workpiece to be processed is reflected and folded back into the main optical path, and perpendicularly enters the imaging system through the action of the dichroic mirror 303, and then is sensed by the sensing element in the imaging mechanism 4 to generate an image.

[0053] Specifically, in the embodiment of the present utility model, the imaging camera 402 is preferably an industrial camera with a target surface ≥ 1 / 2" and a pixel size ≤ 5μm. The optical magnification of the coaxial imaging lens is ×0.5 to ×5, preferably ×2, and the visual positioning accuracy is 5μm.

[0054] Specifically, as Figure 4 shown, in the embodiment of the present utility model, the imaging light source includes an annular top light source 401 for quickly finding the target workpiece and a strip-shaped backlight source 403 for visually grasping the workpiece during the processing. The annular top light source 401 is arranged at the bottom of the field lens and has a workpiece avoidance hole, and the specification of the workpiece avoidance hole is sufficient for the workpiece to pass through to illuminate the top and side parts of the workpiece, avoiding the formation of an observation blind area outside the workpiece, so that the imaging mechanism 4 can collect a sufficiently clear image. At the same time, a top light source switch adjustment knob 404 is provided on the chassis 1 to facilitate adjusting the brightness of the annular light source to meet different usage requirements. And in order to meet the function of visually grasping batch processing and enable the imaging mechanism 4 to collect a sufficiently clear image, the strip-shaped backlight source 403 is arranged on one side below the fixture 501, and a backlight source switch adjustment knob 405 is provided for adjustment. The top light source switch adjustment knob 404 and the backlight source switch adjustment knob 405 are located above the processing area and on the same horizontal plane, that is, directly above the imaging mechanism 4, so that the adjustment process is more convenient and fast.

[0055] Specifically, the red light reflected after the annular top light source 401 in the imaging mechanism 4 irradiates the surface of the workpiece to be processed or the red light other than that blocked by the workpiece to be processed by the strip-shaped backlight source 403 is reflected and folded back into the main optical path, and perpendicularly enters the imaging system through the action of the dichroic mirror 303, and then is sensed by the sensing element in the imaging mechanism 4 to generate an image for visually grasping the workpiece during the processing.

[0056] Based on the above solution, as Figure 4As shown, in the embodiment of the present utility model, an adjusting member 406 is provided above the imaging adapter 302. When the imaging camera 402 images, the angle of the dichroic mirror 303 can be changed through the adjusting member 406, so that the position of the image collected and generated by the imaging camera 402 is consistent with the actual processing position.

[0057] Specifically, as Figure 5 shown, in the embodiment of the present utility model, a plurality of angle blocks 502 are arranged at intervals along the axial direction of the fixture 501, so that a plurality of workpieces can be fixed and clamped simultaneously. Furthermore, by rotating the fixture 501, laser engraving processing of a plurality of workpieces can be realized continuously, effectively improving the working efficiency and realizing batch automatic processing. Among them, the angle block 502 is fixedly connected to the fixture 501 through a tension bolt 504, so that the two contact surfaces of the angle block 502 and the fixture 501 are in close contact.

[0058] Based on the above solution, as Figure 6 shown, in the embodiment of the present utility model, a bar magnet 503 is arranged in each of the angle blocks 502 to facilitate the clamping of the processed workpieces. At the same time, the angle block 502 can be designed with different angles and sizes according to the specific characteristics of the processed workpieces.

[0059] Specifically, as Figure 7 shown, in the embodiment of the present utility model, the bottom of the fixture 501 is connected to a rotation module 604 to drive the fixture 501 to rotate through the rotation module 604 to realize automatic operation and effectively reduce manual operation. Among them, the fixture 501 is fixed to the rotation end of the rotation module 604 through bolts. In this embodiment, the rotation module 604 is a rotation motor.

[0060] Based on the above solution, as Figure 7 shown, in the embodiment of the present utility model, a driving mechanism 6 is further included. The driving mechanism 6 includes an X-axis linear module 601, a Y-axis linear module 602, and a Z-axis lifting module 603. The X-axis linear module 601 is arranged on the moving end of the Y-axis linear module 602 or the Y-axis linear module 602 is arranged on the moving end of the X-axis linear module 601. The X-axis linear module 601 or the Y-axis linear module 602 is arranged on the lifting end of the Z-axis lifting module 603. The rotation module 604 is arranged on the moving end of the X-axis linear module 601 or the Y-axis linear module 602. Specifically, the moving end of the X-axis linear module 601 moves along the X-axis direction, the moving end of the Y-axis linear module 602 moves in the Y-axis direction. The X-axis direction and the Y-axis direction are perpendicular to each other and both are perpendicular to the Z-axis direction. The X-axis linear module 601 and the Y-axis linear module 602 are linked and cooperate to drive the workpiece to move to a position suitable for laser engraving.

[0061] In the actual production process, first turn on the annular top light source 401. Through the driving mechanism 6 and the rotation module 604, that is, the four-axis motion module, find the target workpiece on the fixture. Then turn off the annular top light source 401, turn on the strip backlight 403, obtain the contour map of the workpiece, and set the grasping sample according to the obtained contour map of the workpiece in the vision grasping software of the numerical control system, then the automatic capture and batch processing mode can be started.

[0062] Specifically, as Figures 8-9 shown, in the embodiment of the present invention, both the X-axis linear module 601 and the Y-axis linear module 602 include a base 611, a lead screw motor 612 arranged on the base 611, a top seat 613 arranged at the mobile end of the lead screw motor 612, an in-slot slide rail group 614 arranged in the slot of the base 611, an out-of-slot slide rail group 615 arranged on the top seat 613, and a cylindrical roller group 616. The cylindrical roller group 616 is respectively slidably connected to the in-slot slide rail group 614 and the out-of-slot slide rail group 615. Under the action of the lead screw motor 612, the top seat 613 moves along the X-axis or Y-axis direction. At the same time, the out-of-slot slide rail group 615 arranged on the top seat 613 slides on the out-of-slot slide rail group 615 under the action of the cylindrical roller group 616, making its movement more stable.

[0063] Specifically, as Figure 5 shown, in the embodiment of the present invention, the strip backlight 403 is arranged on the top of the top seat 613 in the X-axis linear module 601 or the Y-axis linear module 602 to perform vision grasping on the workpiece during the processing.

[0064] Based on the above scheme, as Figures 8-9 shown, in the embodiment of the present invention, a groove is opened on one side of the base 611, and sensors 617 are arranged on both side walls of the groove. And a bolt 618 is arranged at the lower end of the top seat 613 corresponding to the sensors 617. When the lead screw motor 612 drives the top seat 613 to slide, the top seat 613 drives the bolt 618 to move within the safety range of the two sensors 617. At the same time, there is a hard limit at the position of the sensors 617 installed on the base 611. The bolt 618 can trigger both the soft and hard limits, serving two purposes, further ensuring the safety of the mechanism.

[0065] In the embodiment of the present invention, the outer dimensions of the X / Y-axis linear module are 130mm×140mm (in the direction of installing the motor). The moving stroke of the X-axis linear module 601 and the Y-axis linear module 602 is 60mm×60mm, with high space utilization rate, making the overall equipment more compact.

[0066] Specifically, as Figure 10As shown in the figure, in the embodiment of the present utility model, the Z-axis lifting module 603 includes a bottom plate 631 provided on the chassis 1, side plates 632 mirror-symmetrically arranged on both sides of the bottom plate 631, a lifting motor 633 provided on one side plate 632, a side guide rail group 634 provided on the other side plate 632, a top plate 635 slidably connected to the side guide rail group 634, a bottom guide rail group 636 provided on the bottom plate 631, a middle plate 637 slidably connected to the bottom guide rail group 636 and connected to the moving end of the lifting motor 633, and a middle guide rail group 638 provided on the top plate 635. The middle guide rail group 638 is slidably connected to the middle plate 637. The X-axis linear module 601 or the Y-axis linear module 602 is provided on the top of the top plate 635. Driven by the lifting motor 633, the middle plate 637 linearly slides on the bottom guide rail group 636. The middle plate 637 drives the side guide rail group 634 to linearly move. The first top plate 635 moves up and down along the side guide rail group 634 and the middle guide rail group 638 at the same time, thereby realizing the lifting of the X-axis linear module 601 and the Y-axis linear module 602.

[0067] Based on the above solution, as Figure 11 shown in the figure, in the embodiment of the present utility model, a limit sensor 639 and a limit anti-collision block are provided on the bottom plate 631. A limit bolt 640 and a sliding anti-collision block 641 are provided on the middle plate 637. Polyurethane anti-collision blocks are provided on both sides of the sliding anti-collision block 641. The middle plate 637 drives the limit bolt 640 and the sliding anti-collision block 641 to slide on the bottom guide rail group 636. The sliding range is between the two limit anti-collision blocks. When reaching the limit position of the limit sensor 639, a signal is sent to stop further sliding, and the soft limit takes effect. If the soft limit fails, the hard limit provides protection, which is safe and reliable.

[0068] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model and are not intended to limit them. Although the present utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present utility model can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present utility model, and they should all be covered by the scope of the claims of the present utility model.

Claims

1. A laser engraving machine, characterized in that, It includes a chassis and a laser, an optical mechanism, an imaging mechanism and a fixing mechanism arranged on the chassis; The optical mechanism is arranged above the imaging mechanism and on one side of the laser emission end of the laser; The fixing mechanism includes a fixture rotatably arranged on the chassis and a plurality of angle blocks arranged on the fixture and used for clamping workpieces; The imaging mechanism is arranged above the flange of the fixture and is used for imaging illumination of the workpiece surface and collecting and generating images; Among them, the optical mechanism reflects and focuses the laser beam emitted by the laser onto the workpiece surface on an angle block to realize laser engraving processing of the workpiece.

2. The laser engraver according to claim 1, characterized in that, The optical mechanism includes a beam expander, an imaging adapter, a dichroic mirror, a galvanometer scanner and a field lens arranged in sequence, and the beam expander is arranged on one side of the laser emission end of the laser.

3. A laser engraving machine according to claim 2, characterized in that, The beam expander is connected to the laser through a flange, and an installation groove for installing a sealing ring is arranged on the flange, and a sealing sleeve is arranged between the beam expander and the imaging adapter.

4. A laser engraving machine according to claim 2, characterized in that, The imaging mechanism includes an imaging light source and an imaging camera. The imaging light source is arranged below the field lens, the imaging camera is arranged at the bottom of the imaging adapter, and the dichroic mirror is arranged in the imaging adapter and reflects the illumination light of the imaging light source reflected by the galvanometer scanner to the imaging camera.

5. A laser engraving machine according to claim 4, characterized in that, The imaging light source includes an annular top light source and a strip-shaped back light source. The annular top light source is arranged at the bottom of the field lens and has a workpiece avoidance hole, and the strip-shaped back light source is arranged below the fixture.

6. A laser engraving machine according to claim 1, characterized in that, A strip-shaped magnet is arranged in each of the angle blocks.

7. A laser engraving machine according to any one of claims 1-6, characterized in that, The bottom of the fixture is connected to a rotation module to drive the fixture to rotate through the rotation module.

8. A laser engraving machine according to claim 7, characterized in that, It further includes a driving mechanism. The driving mechanism includes an X-axis linear module, a Y-axis linear module and a Z-axis lifting module. The X-axis linear module is arranged on the moving end of the Y-axis linear module or the Y-axis linear module is arranged on the moving end of the X-axis linear module. The X-axis linear module or the Y-axis linear module is arranged on the lifting end of the Z-axis lifting module, and the rotation module is arranged on the moving end of the X-axis linear module or the Y-axis linear module.

9. A laser engraving machine according to claim 8, characterized in that, Both the X-axis linear module and the Y-axis linear module include a base, a screw motor arranged on the base, a top seat arranged on the moving end of the screw motor, an in-slot slide rail group arranged on the base, an out-of-slot slide rail group arranged on the top seat, and a cylindrical roller group. The cylindrical roller group is slidably connected to the in-slot slide rail group and the out-of-slot slide rail group respectively.

10. A laser engraving machine according to claim 8, characterized in that, The Z-axis lifting module includes a bottom plate arranged on the chassis, side plates mirror-symmetrically arranged on both sides of the bottom plate, a lifting motor arranged on one side plate, a side guide rail group arranged on the other side plate, a top plate slidably connected to the side guide rail group, a bottom guide rail group arranged on the bottom plate, a middle plate slidably connected to the bottom guide rail group and connected to the moving end of the lifting motor, and a middle guide rail group arranged on the top plate. The middle guide rail group is slidably connected to the middle plate, and the X-axis linear module or the Y-axis linear module is arranged on the top of the top plate.

Images