High-precision laser etching equipment for surface of metal structural part

Abstract

The utility model relates to the technical field of metal laser carving, and discloses a metal structural part surface high-precision laser carving device which comprises an installation table, a lifting table and a laser carving machine body, the lifting table is arranged on the installation table, the laser carving machine body is installed on the lifting table, a laser carving moving mechanism is installed on the installation table, and a moving seat is fixed to the laser carving moving mechanism. A rotating tensioning disc is arranged in the moving seat, a plurality of arc-shaped sliding grooves are formed in the rotating tensioning disc in an annular array mode, a plurality of round rods with the upper ends connected with clamping claws are correspondingly installed in the arc-shaped sliding grooves in a sliding mode, and the rotating tensioning disc is driven by a motor to rotate to achieve rapid and stable clamping. Workpieces of different specifications can be rapidly and stably clamped by adjusting the clamping mechanism, the laser engraving machine can rapidly adapt to machining of the workpieces of different specifications and carry out high-precision laser engraving operation, metal parts do not make direct contact with the surfaces of the workpieces when the workpieces are clamped, and damage to the workpieces caused by clamping can be effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field, and specifically relates to a high-precision laser engraving device for the surface of metal structural parts. Background Technique

[0002] Due to market and production processing requirements, patterns or texts need to be drawn on the surface of some metal structural parts. According to the processing principle, there are processing methods such as mechanical engraving, chemical corrosion, screen printing, ink printing, and laser engraving. Among them, the laser engraving process has outstanding characteristics such as high flexibility, precise control, simple operation, and permanent marking compared with traditional processes. Laser engraving refers to laser carving. A high-intensity laser is generated by a laser generator, and then the high-intensity laser beam is focused at the focal point through a lens group. The light energy of the laser beam causes chemical and physical changes in the surface layer material to engrave traces, or burns off part of the material by light energy to show the required etched graphics and texts.

[0003] For example, the patent document CN207464488U discloses a laser engraving machine. The laser engraving machine includes a machine frame, a moving device, a laser generator, and a controller installed on the machine frame. The moving device includes a carrier and a driving member for driving the carrier to move; the laser generator is suspended above the carrier, and the emission port of the laser generator is arranged downward to form a laser engraving area below; the controller is electrically connected to the driving member and the laser generator. The controller is used to control the driving member to drive the carrying position on the carrier to move to the laser engraving area, and control the laser generator to perform laser engraving on the workpiece to be laser engraved at the carrying position. The technical solution of this utility model simplifies the laser engraving process and improves work efficiency by setting a moving device, a laser generator, and a controller. The laser generator emits laser and forms a laser engraving area, and the controller drives the carrying position on the carrier to move to the laser engraving area. However, there are still many deficiencies in this prior art. For example, there is no structure for fixing the workpiece on the carrying position, and the workpiece cannot be stably clamped when the carrying position moves, which is not conducive to high-precision laser engraving processing; the workpiece is in direct contact with the metal part, which may cause damage to the surface of the workpiece and reduce the quality of the workpiece. Content of the Utility Model

[0004] The purpose of the utility model is to provide a high-precision laser engraving device for the surface of metal structural parts to solve the problems raised in the above background technique.

[0005] To achieve the above object, the present utility model provides the following technical solution: A high-precision laser engraving device for the surface of a metal structural member, comprising an installation table, a lifting table and a laser engraving machine body. The lifting table is fixed on the installation table, and the laser engraving machine body is installed on the lifting table. It is characterized in that: a laser engraving moving mechanism is provided on the installation table, a moving seat is fixed on the laser engraving moving mechanism, a plurality of rectangular sliding grooves are formed in a circular array on the upper end surface of the moving seat, and round rods are slidably installed in a plurality of the rectangular sliding grooves. The upper ends of a plurality of the round rods are all connected with clamping claws; a rotary tensioning disc is arranged inside the moving seat, a plurality of arc-shaped sliding grooves are formed in a circular array on the rotary tensioning disc, and a plurality of the round rods are correspondingly slidably installed in a plurality of the arc-shaped sliding grooves. The lower surface of the rotary tensioning disc is connected to the upper end of a round shaft, a driven gear is fixedly installed on the side wall of the round shaft, and a driving gear is meshed with the outer wall of the driven gear. The driving gear is connected to the output shaft of the motor through a speed reducer.

[0006] As a further improvement of the above solution, the clamping claw includes a base and a clamping rod. A sleeve is installed on the base, the clamping rod is sleeved inside the sleeve, and a hexagon bolt for fixing the clamping rod is installed on the outer wall of the sleeve in a threaded manner.

[0007] As a further improvement of the above solution, a slide bar is fixed on the outer wall of the base, a limit sleeve is sleeved on the slide bar, and the limit sleeve is bolted to the upper end surface of the moving seat.

[0008] As a further improvement of the above solution, a cavity is formed inside the top end of the clamping rod, a buffer block is slidably installed in the cavity, the buffer block is fixedly connected to the inner wall of the cavity by a plurality of springs, and a rubber pad is adhesively fixed on the surface of the buffer block.

[0009] As a further improvement of the above solution, the laser engraving moving mechanism includes a longitudinal rodless cylinder and a transverse rodless cylinder. Longitudinal sliders are slidably installed on both of the longitudinal rodless cylinders, the transverse rodless cylinder is fixed between the two longitudinal sliders, a transverse slider is slidably installed on the transverse rodless cylinder, and the upper end surface of the transverse slider is fixedly connected to the moving seat.

[0010] As a further improvement of the above solution, a vertical rodless cylinder is fixedly installed inside the cavity of the lifting table, a vertical slider is slidably installed on the vertical rodless cylinder, the outer wall of the vertical slider is fixed to the laser engraving machine body through a connecting seat, and a strip-shaped groove for the free up-and-down sliding of the connecting seat is formed on the right side wall of the lifting table.

[0011] As a further improvement of the above solution, the laser engraving machine body includes a laser generator and a laser lens. The emitting end of the laser generator is connected to the laser lens, and the emitting port direction of the laser lens is vertically downward.

[0012] As a further improvement to the above solution, a drawer and a main cabinet are provided on the front end face of the installation table; a display and a control panel are installed on the upper end face of the installation table.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] In the present utility model, a moving seat is provided on the laser engraving moving mechanism, a rotating tensioning disc is arranged inside the moving seat, a plurality of arc-shaped chutes are formed in a circular array on the rotating tensioning disc, a plurality of round rods are slidably installed corresponding to the arc-shaped chutes, the upper ends of the round rods are connected to the clamping claws, the lower surface of the rotating tensioning disc is connected to the upper end of a round shaft, a driven gear is fixedly installed on the side wall of the round shaft, a driving gear is meshed with the outer wall of the driven gear, the driving gear is connected to the output shaft of the motor through a speed reducer, and the motor drives the rotating tensioning disc to rotate through the driving gear, the speed reducer and the driven gear, so that a plurality of round rods installed in the chutes of the rotating tensioning disc drive the clamping claws to move.

[0015] This structure can quickly adjust the clamping claws, and can quickly clamp or release the workpiece during the actual processing process, improving the loading and unloading speed and processing efficiency; at the same time, the rotating tensioning disc structure enables the clamping claws to move synchronously during clamping, which can ensure that the workpiece is positioned at the center of the moving seat, making the processing area more accurately controlled, thereby improving the laser engraving accuracy; the clamping claws with such synchronous movement can also ensure that the force received by the workpiece is uniform and stable, and it is not easy to cause deformation or other damages to the workpiece due to uneven force, ensuring the good product rate of workpiece processing.

[0016] In the present utility model, a sleeve is installed on the base of the clamping claw, a clamping rod is sleeved inside the sleeve, and a hexagonal bolt for fixing the clamping rod is installed on the outer wall of the sleeve by threading. This structure can adapt to the clamping work of workpieces with different heights by adjusting the height of the clamping rod. At the same time, the height of each clamping rod can be adjusted separately to adapt to clamping workpieces with an inclined upper surface or a notch on the upper surface, ensuring that each clamping claw can act on the workpiece, improving the applicable range of the clamping piece, reducing the time for replacing the clamping piece, saving the device cost and time cost, and improving the processing efficiency; in addition, a cavity is formed inside the inner side of the top end of the clamping rod, a buffer block is slidably installed in the cavity, the buffer block is fixedly connected to the inner wall of the cavity by a plurality of springs, and a rubber pad is adhesively fixed on the surface of the buffer block. When clamping the workpiece, the metal clamping claw does not directly contact the surface of the metal workpiece, avoiding possible damage to the workpiece during processing; at the same time, after the buffer block contacts the workpiece, the rubber pad and the spring absorb the vibration generated by the collision, further avoiding possible damage to the workpiece and the surface of the workpiece during the processing process, ensuring the good product rate of workpiece processing. Description of the Drawings

[0017] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a three-dimensional structural schematic diagram of the first perspective of the present utility model;

[0019] Figure 2 It is a three-dimensional structural schematic diagram of the second perspective of the present utility model;

[0020] Figure 3 It is a three-dimensional structural schematic diagram of the clamping assembly in the present utility model;

[0021] Figure 4 It is an internal structural schematic diagram of the clamping assembly in the present utility model;

[0022] Figure 5 It is a sectional view of the internal structure of the lifting platform in the present utility model;

[0023] Figure 6 It is a sectional view of the clamping jaw in the present utility model.

[0024] In the figure: 1, mounting table; 101, drawer; 102, main cabinet; 103, display; 104, control panel; 2, lifting platform; 201, vertical rodless cylinder; 202, vertical slider; 203, connecting seat; 204, strip groove; 3, laser engraving machine body; 301, laser generator; 302, laser lens; 4, laser engraving moving mechanism; 401, longitudinal rodless cylinder; 402, transverse rodless cylinder; 403, longitudinal slider; 404, transverse slider; 5, moving seat; 6, rectangular sliding groove; 7, round rod; 8, clamping jaw; 801, base; 802, clamping rod; 803, sleeve; 804, hexagon bolt; 805, slide bar; 806, limiting sleeve; 807, cavity; 808, buffer block; 9, rotating tensioning disc; 10, arc-shaped sliding groove; 11, round shaft; 12, driven gear; 13, driving gear; 14, motor. Specific embodiments

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, rather than all embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present utility model. Embodiment 1

[0026] A high-precision laser engraving device for the surface of metal structural parts, as Figures 1 to 4 shown, includes an installation table 1, a lifting table 2 and a laser engraving machine body 3. The lifting table 2 is fixed on the installation table 1, and the laser engraving machine body 3 is installed on the lifting table. A laser engraving moving mechanism 4 is provided on the installation table 1. A moving seat 5 is fixed on the laser engraving moving mechanism 4. A plurality of rectangular sliding grooves 6 are formed in an annular array on the upper end surface of the moving seat 5. A round rod 7 is slidably installed in each of the plurality of rectangular sliding grooves 6. A clamping claw 8 is connected to the upper ends of the plurality of round rods 7. A rotary tensioning disc 9 is provided inside the moving seat 5. A plurality of arc-shaped sliding grooves 10 are formed in an annular array on the rotary tensioning disc 9. A plurality of round rods 7 are correspondingly slidably installed in the plurality of arc-shaped sliding grooves 10. The lower surface of the rotary tensioning disc 9 is connected to the upper end of a round shaft 11. A driven gear 12 is fixedly installed on the side wall of the round shaft 11. The outer wall of the driven gear 12 is engaged with a transmission gear 13. The transmission gear 13 is connected to the output shaft of a motor 14 through a reducer.

[0027] As Figure 1 、 Figure 2 shown, a drawer 101 and a main cabinet 102 are provided on the front end surface of the installation table 1. A keyboard is placed in the drawer 101 for inputting the workpieces and processing information required for laser engraving. A computer mainframe is placed in the main cabinet 102, which is electrically connected to structures such as the laser engraving machine body 3 for processing the processing information; A display 103 and a control panel 104 are installed on the upper end surface of the installation table 1. The display 103 is used to display the workpieces and processing information, and the control panel 104 is used to control the processing process; The display 103, the control panel 104, etc. all belong to known and publicly disclosed technologies, and their specific internal structures and working principles will not be elaborated here.

[0028] As Figure 1 、 Figure 2 、 Figure 5 shown, a vertical rodless cylinder 201 is fixedly installed inside the cavity of the lifting table 2. A vertical slider 202 is slidably installed on the vertical rodless cylinder 201. The outer wall of the vertical slider 202 is fixed to the laser engraving machine body 3 through a connecting seat 203. A strip-shaped groove 204 for the free up-and-down sliding of the connecting seat 203 is provided on the right side wall of the lifting table 2; On the upper end surface of the moving seat 5, the laser engraving machine body 3 includes a laser generator 301 and a laser lens 302. The emitting end of the laser generator 301 is connected to the laser lens 302. The emitting port direction of the laser lens 302 is vertically downward. The laser generator 301 generates laser through particle resonance and forms a laser beam that meets the processing requirements through the lens group of the laser lens 302. The laser generator 301 and the laser lens 302 both belong to publicly known technologies, and their internal structures and working principles will not be elaborated here.

[0029] As Figure 1 、 Figure 2As shown in the figure, the laser engraving moving mechanism 4 includes a longitudinal rodless cylinder 401 and a transverse rodless cylinder 402. Longitudinal sliders 403 are slidably mounted on both longitudinal rodless cylinders 401. A transverse rodless cylinder 402 is fixed between the two longitudinal sliders 403. A transverse slider 404 is slidably mounted on the transverse rodless cylinder 402. A moving seat 5 is fixedly connected to the upper end surface of the transverse slider 404.

[0030] During the operation of Embodiment 1, the workpiece is placed on the moving seat 5. The control panel 104 is used to control the motor 14 to work. The rotating tensioning disc 9 is driven to rotate clockwise through the transmission gear 13, the reducer, and the driven gear 12. The rotating tensioning disc 9 drives the round rod 7 connected to the clamping jaw 8 to slide in the arc-shaped chute 10. Since a slide bar 805 is fixed to the outer wall of the base 801 of the clamping jaw 8, and a limit sleeve 806 is sleeved on the slide bar 805 and fixed by bolts, the clamping jaw 8 rotates with the rotating tensioning disc 9 and slides towards the center in the rectangular chute 6. After gradually clamping the workpiece, the motor 14 stops working to avoid damaging the workpiece due to excessive clamping. Then, the control panel 104 is used to control the longitudinal rodless cylinder 401 and the transverse rodless cylinder 402 on the laser engraving moving mechanism 4, so that the longitudinal slider 403 and the transverse slider 404 slide along the respective cylinder tracks, driving the workpiece clamped on the moving seat 5 to move longitudinally and transversely until the part to be processed is moved below the laser engraving machine body 3, enabling the workpiece to enter the laser engraving area. The control panel 104 is used to control the vertical slider 202 on the vertical rodless cylinder 201 in the lifting table 2, and the height of the laser engraving machine body 3 is adjusted according to the processing requirements and the focal length of the laser engraving machine body 3. The laser engraving machine body 3 is started to process the position to be processed on the workpiece. According to the processing requirements, the position of the moving seat 5 can be adjusted again to change the processing position of the workpiece until the processing is completed. The moving seat is controlled to return to the initial position to facilitate the removal of the workpiece. Then, the motor 14 is started to drive the rotating tensioning disc 9 to rotate counterclockwise, so that the clamping jaw moves away from the workpiece along the chute, releasing the clamping of the workpiece, and completing the laser engraving processing on the surface of the workpiece. Embodiment 2

[0031] Based on Embodiment 1, as Figure 6 shown, the clamping jaw 8 includes a base 801 and a clamping rod 802. A sleeve 803 is installed on the base 801. The clamping rod 802 is sleeved in the sleeve 803. A hexagonal bolt 804 for fixing the clamping rod 802 is threadedly installed on the outer wall of the sleeve 803.

[0032] Example 2 When clamping workpieces of different specifications, the hexagonal bolt 804 can be loosened. According to the different heights of the workpieces, after synchronously adjusting the height of the clamping rod 802, the hexagonal bolt 804 is tightened to fix it, and workpieces of different heights are clamped to quickly and stably complete the clamping work. In addition, the height of the clamping rod 802 can also be adjusted separately to cope with the clamping problems of workpieces with inclined surfaces or notches at the upper end, ensuring that the clamping claws 8 can all play a clamping role on the workpieces and guaranteeing the clamping stability. Example 3

[0033] Based on Example 1, as Figure 6 shown, a cavity 807 is opened on the inner side of the top end of the clamping rod 802. A buffer block 808 is slidably installed in the cavity 807. The buffer block 808 is fixedly connected to the inner wall of the cavity 807 by a number of springs. A rubber pad is adhesively fixed on the surface of the buffer block 808.

[0034] When Example 3 clamps some workpieces with easily deformable structures or easily scratched surfaces, the metal on the clamping claws 8 does not directly contact the surface of the workpiece, but is buffered by the rubber pad, which can effectively avoid damage to the surface of the workpiece. At the same time, when the buffer block contacts the surface of the workpiece, the rubber pad and the spring on the buffer block can provide a buffer space to avoid damage to the workpiece caused by excessive clamping.

[0035] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-precision laser engraving device for the surface of a metal structural part, comprising a mounting platform (1), a lifting platform (2) and a laser engraving machine body (3), wherein the lifting platform (2) is fixed on the mounting platform (1), and the laser engraving machine body (3) is installed on the lifting platform (2), characterized in that: The mounting platform (1) is provided with a laser engraving moving mechanism (4), and a moving seat (5) is fixed on the laser engraving moving mechanism (4). The upper end surface of the moving seat (5) is provided with a plurality of rectangular slide grooves (6) in a circular array, and round rods (7) are slidably installed in the plurality of rectangular slide grooves (6), and the upper ends of the plurality of round rods (7) are connected with clamping claws (8); a rotating tensioning disk (9) is provided inside the moving seat (5), and a plurality of arcuate slide grooves (10) are provided on the rotating tensioning disk (9) in a circular array, and the plurality of round rods (7) are slidably installed in the plurality of arcuate slide grooves (10), and the lower surface of the rotating tensioning disk (9) is connected to the upper end of a circular shaft (11), and a driven gear (12) is fixedly installed on the side wall of the circular shaft (11), and a transmission gear (13) is meshed on the outer wall of the driven gear (12), and the transmission gear (13) is connected to the output shaft of the motor (14) through a reducer.

2. The high-precision laser engraving equipment for metal structural parts according to claim 1, characterized in that: The clamping claw (8) comprises a base (801) and a clamping rod (802); a sleeve (803) is mounted on the base (801); the clamping rod (802) is sleeved inside the sleeve (803); and a hexagonal bolt (804) for fixing the clamping rod (802) is threadedly mounted on the outer wall of the sleeve (803).

3. The high-precision laser engraving equipment for metal structural parts according to claim 2, characterized in that: A slide bar (805) is fixed to the outer wall of the base (801), a limit sleeve (806) is sleeved on the slide bar (805), and the limit sleeve (806) is bolted to the upper end surface of the movable seat (5).

4. The high-precision laser engraving equipment for metal structural parts surface according to claim 2, characterized in that: A cavity (807) is provided on the inner side of the top end of the clamping rod (802), a buffer block (808) is slidably mounted in the cavity (807), the buffer block (808) is fixedly connected to the inner wall of the cavity (807) by a plurality of springs, and a rubber pad is bonded and fixed to the surface of the buffer block (808).

5. The high-precision laser engraving equipment for metal structural parts according to claim 1, characterized in that: The laser engraving moving mechanism (4) comprises a longitudinal rodless cylinder (401) and a transverse rodless cylinder (402), the two longitudinal rodless cylinders (401) are both slidably mounted with longitudinal sliders (403), the transverse rodless cylinder (402) is fixed between the two longitudinal sliders (403), the transverse rodless cylinder (404) is slidably mounted on the transverse rodless cylinder (402), and the upper end surface of the transverse slider (404) is fixedly connected to the moving seat (5).

6. The high-precision laser engraving equipment for metal structural parts surface according to claim 1, characterized in that: A vertical rodless cylinder (201) is fixedly installed inside the cavity of the lifting platform (2), a vertical slider (202) is slidably installed on the vertical rodless cylinder (201), the outer wall of the vertical slider (202) is fixed to the laser engraving machine body (3) via a connecting seat (203), and a strip groove (204) is provided on the right side wall of the lifting platform (2) for the connecting seat (203) to slide freely up and down.

7. The high-precision laser engraving equipment for metal structural parts surface according to claim 1, characterized in that: The laser engraving machine body (3) comprises a laser generator (301) and a laser lens (302); an emitting end of the laser generator (301) is connected to the laser lens (302); and an emitting port of the laser lens (302) is directed vertically downward.

8. The high-precision laser engraving equipment for metal structural parts surface according to claim 1, characterized in that: The front end surface of the mounting platform (1) is provided with a drawer (101) and a main cabinet (102); the upper end surface of the mounting platform (1) is provided with a display (103) and a control panel (104).

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