Automatic focusing device of laser marking machine

Abstract

The utility model discloses an automatic focusing device of a laser marking machine, which comprises a base, a mounting plate is fixedly mounted at the top of the base, a hydraulic push rod is fixedly mounted at the top of the mounting plate, and a placing plate is fixedly mounted at the output end of the hydraulic push rod. Driving assemblies are arranged on the front side and the rear side of the containing plate correspondingly, clamping plates are arranged at the top of the containing plate through the driving assemblies, lifting assemblies are arranged at the tops of the clamping plates, pressing plates are arranged at the tops of the clamping plates through the lifting assemblies, and the clamping plates get close to each other through the driving assemblies to make contact with the front side and the rear side of a workpiece. The pressing plate moves downwards to be in close contact with the top of the workpiece through the lifting assembly, so that the aim of fixing the workpiece before the workpiece is automatically focused is achieved, and the phenomenon that the workpiece deviates in the process of subsequently moving upwards to be automatically focused is avoided; and deviation between the focusing point position of the workpiece and the preset focusing point position is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of laser marking machines, in particular to an automatic focusing device of a laser marking machine. Background Art

[0002] Laser marking is to use laser beam to make permanent marks on the surface of various materials. The effect of marking is to expose the deeper material through the evaporation of the surface material, or to carve out traces through the chemical and physical changes of the surface material caused by light energy, or to burn off part of the material through light energy to reveal the pattern and text to be etched. Before the laser marking machine works, it is necessary to focus the workpiece through the laser lens.

[0003] The existing patent (application number: CN202120740453.3) discloses an automatic focusing device for a laser marking machine, including a laser marking machine body, the sides of the laser marking machine body are respectively fixedly connected with a box and a control switch, the lower surface of the box is respectively fixedly connected with a laser lens and a distance sensor, the lower surface of the laser marking machine body is rotatably connected with an adjusting nut, the inner wall of the adjusting nut is threadedly connected with a supporting leg, the upper surface of the laser marking machine body is rotatably connected with a handle, and a slide groove is provided on the side of the laser marking machine body. By arranging a distance sensor, an adjusting motor, an adjusting screw and an adjusting block, the height of the workpiece placement table can be easily adjusted, so that the laser marking machine has the effect of convenient automatic focusing.

[0004] However, the above patent still has certain defects. Although the above patent can achieve the effect of autofocus by adjusting the height of the placement table, the above patent does not fix the workpiece when performing autofocus. In the process of the placement table moving upward for autofocusing, after the placement table stops moving upward, the workpiece may continue to move upward due to inertia, so that after the workpiece falls on the placement table, the position of the workpiece is prone to shift, thereby causing the autofocus point position of the workpiece to deviate from the predetermined autofocus point position. Therefore, the utility model provides an autofocus device for a laser marking machine. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides an automatic focusing device for a laser marking machine, which is used to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] An automatic focusing device for a laser marking machine comprises a base, a mounting plate is fixedly installed on the top of the base, a hydraulic push rod is fixedly installed on the top of the mounting plate, a placement plate is fixedly installed on the output end of the hydraulic push rod, a driving assembly is arranged on the front and rear sides of the placement plate, a clamping plate is arranged on the top of the placement plate through the driving assembly, a lifting assembly is arranged on the top of the clamping plate, a pressing plate is arranged on the top of the clamping plate through the lifting assembly, a supporting frame is fixedly installed on the top of the base, a left and right moving assembly is arranged inside the supporting frame, a connecting plate is arranged inside the supporting frame through the left and right moving assembly, a front and rear moving assembly is arranged at the bottom of the connecting plate, a laser marking machine body is arranged at the bottom of the connecting plate through the front and rear moving assembly, a laser lens and a distance sensor are fixedly installed at the bottom of the laser marking machine body, and a controller is fixedly installed on the front side of the supporting frame.

[0008] Preferably, the driving assembly includes a fixing frame arranged on the front and rear sides of the placing plate, a driving motor is fixedly mounted on the surface of the fixing frame, a screw is fixedly mounted on the output end of the driving motor, and the screw is rotatably connected to the fixing frame, a moving block is threadedly connected to the surface of the screw, and the moving block is slidably connected to the fixing frame, and the moving block is fixedly connected to the clamping plate.

[0009] Preferably, the lifting assembly includes a fixed plate arranged on the top of the clamping plate, an electric push rod is fixedly installed on the inner wall of the fixed plate, and the output end of the electric push rod is fixedly connected to the pressure plate.

[0010] Preferably, the left-right moving assembly includes a first linear motor arranged on the inner wall of the support frame, the first linear motor is provided with a first moving seat, and the first moving seat is fixedly connected to the connecting plate.

[0011] Preferably, the forward and backward moving assembly includes a second linear motor arranged at the bottom of the connecting plate, a second moving seat is arranged on the second linear motor, and the second moving seat is fixedly connected to the laser marking machine body.

[0012] Preferably, a supporting leg is fixedly mounted on the bottom of the base, and there are multiple supporting legs, which are symmetrically distributed.

[0013] Preferably, the support frame is in an L-shaped structure and is made of metal material. There are multiple clamping plates, and the multiple clamping plates are symmetrically distributed.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows: the automatic focusing device of the laser marking machine places the workpiece on the placement plate, and before the placement plate and the workpiece are moved upward for automatic focusing by the hydraulic push rod, the front and rear clamping plates are brought close to each other and in close contact with the front and rear sides of the workpiece by the driving component, and the pressing plate is moved downward for close contact with the top of the workpiece by the lifting component, thereby achieving the goal of fixing the workpiece before automatic focusing on the workpiece, avoiding the phenomenon of the workpiece being offset in the subsequent process of moving upward for automatic focusing, and avoiding the deviation between the automatic focus point position of the workpiece and the predetermined automatic focus point position. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional stereogram of the utility model;

[0016] Figure 2 For this utility model Figure 1 The enlarged view of point A in the middle;

[0017] Figure 3 It is a right sectional view of the structure of the utility model;

[0018] Figure 4 For this utility model Figure 3 Enlarged view of point B in the middle.

[0019] In the figure: 1. base; 2. mounting plate; 3. hydraulic push rod; 4. placement plate; 5. fixed frame; 6. drive motor; 7. screw; 8. moving block; 9. clamping plate; 10. fixing plate; 11. electric push rod; 12. pressure plate; 13. support frame; 14. first linear motor; 15. first moving seat; 16. connecting plate; 17. second linear motor; 18. second moving seat; 19. laser marking machine body; 20. laser lens; 21. distance sensor; 22. controller; 23. supporting leg. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] Reference Figure 1-4, an automatic focusing device for a laser marking machine, comprising a base 1, a mounting plate 2 is fixedly mounted on the top of the base 1, a hydraulic push rod 3 is fixedly mounted on the top of the mounting plate 2, a placement plate 4 is fixedly mounted on the output end of the hydraulic push rod 3, a driving assembly is arranged on the front and rear sides of the placement plate 4, a clamping plate 9 is arranged on the top of the placement plate 4 through the driving assembly, the driving assembly comprises a fixing frame 5 arranged on the front and rear sides of the placement plate 4, a driving motor 6 is fixedly mounted on the surface of the fixing frame 5, a screw 7 is fixedly mounted on the output end of the driving motor 6, and the screw 7 is rotatably connected to the fixing frame 5, a moving block 8 is threadedly connected to the surface of the screw 7, and the moving block 8 is slidably connected to the fixing frame 5, and the moving block 8 is fixed to the clamping plate 9 The clamping plate 9 is fixedly connected to provide a driving force for the forward and backward movement of the clamping plate 9, so that the clamping plate 9 can clamp and fix the front and rear sides of the workpiece. A lifting assembly is arranged on the top of the clamping plate 9, and a pressing plate 12 is arranged on the top of the clamping plate 9 through the lifting assembly. The lifting assembly includes a fixed plate 10 arranged on the top of the clamping plate 9, and an electric push rod 11 is fixedly installed on the inner wall of the fixed plate 10. The output end of the electric push rod 11 is fixedly connected to the pressing plate 12, which is convenient for providing a driving force for the up and down movement of the pressing plate 12, so that the pressing plate 12 can limit the top of the workpiece, avoiding the phenomenon that the pressing plate 12 will deviate. A support frame 13 is fixedly installed on the top of the base 1, and the support frame 13 is L-shaped. , and the support frame 13 is made of metal material, the number of clamping plates 9 is multiple, and the multiple clamping plates 9 are symmetrically distributed, a left-right moving component is arranged inside the support frame 13, a connecting plate 16 is arranged inside the support frame 13 through the left-right moving component, a front-back moving component is arranged at the bottom of the connecting plate 16, a laser marking machine body 19 is arranged at the bottom of the connecting plate 16 through the front-back moving component, a laser lens 20 and a distance sensor 21 are fixedly installed at the bottom of the laser marking machine body 19, a controller 22 is fixedly installed at the front side of the support frame 13, a supporting leg 23 is fixedly installed at the bottom of the base 1, the number of the supporting leg 23 is multiple, and the multiple supporting legs 23 are symmetrically distributed, which is convenient for installation The device can be placed more stably, avoiding the phenomenon of the device tipping over. The autofocus device of the laser marking machine places the workpiece on the placement plate 4. Before the placement plate 4 and the workpiece are moved upward for autofocusing by the hydraulic push rod 3, the clamping plate 9 is driven by the assembly to make the front and rear of the clamping plate 9 close to each other and in close contact with the front and rear sides of the workpiece, and the pressing plate 12 is moved downward by the lifting assembly to in close contact with the top of the workpiece, thereby achieving the goal of fixing the workpiece before autofocusing the workpiece, avoiding the phenomenon of the workpiece being offset during the subsequent upward movement for autofocusing, and avoiding the deviation between the autofocus point position of the workpiece and the predetermined autofocus point position.

[0022] Specifically, the left and right moving component includes a first linear motor 14 arranged on the inner wall of the support frame 13, a first moving seat 15 is arranged on the first linear motor 14, and the first moving seat 15 is fixedly connected to the connecting plate 16, so as to provide driving force for the left and right movement of the connecting plate 16, and the front and back moving component includes a second linear motor 17 arranged at the bottom of the connecting plate 16, a second moving seat 18 is arranged on the second linear motor 17, and the second moving seat 18 is fixedly connected to the laser marking machine body 19, so as to provide driving force for the front and back movement of the laser marking machine body 19, and the coordinated use of the left and right moving component, the connecting plate 16 and the front and back moving component can facilitate the adjustment of the horizontal position of the laser marking machine body 19, so that the laser marking machine body 19 can focus on different positions on the workpiece.

[0023] The automatic focusing device of the laser marking machine is connected to the 220V mains power, and the main controller can be a conventional known device for control such as a computer.

[0024] When in use: place the workpiece on the placement plate 4, start the drive motor 6, so that the screw 7 rotates, so that the moving block 8 approaches each other along the fixed frame 5, and drives the clamping plate 9 to approach each other front and back, until the clamping plate 9 is in close contact with the front and back sides of the workpiece, start the electric push rod 11, so that the pressure plate 12 moves downward until the pressure plate 12 is in close contact with the top of the workpiece, start the first linear motor 14, so that the first moving seat 15 moves left and right, and drives the connecting plate 16, the second linear motor 17, the second moving seat 18, the laser marking machine body 19 and the laser lens 20 to move left and right, until the laser lens 20 moves left and right to a suitable position, start the second linear motor 17, so that the second moving seat 18 moves back and forth, and drives the laser marking machine body 19 and the laser lens 20 to move back and forth, until the laser lens 20 moves back and forth to a suitable position, then start the hydraulic push rod 3, so that the placement plate 4 and the workpiece move upward, until the workpiece moves to a suitable height, thereby completing the automatic focusing of the workpiece.

[0025] To summarize, the autofocus device of the laser marking machine places the workpiece on the placement plate 4, and before the placement plate 4 and the workpiece are moved upward for autofocusing by the hydraulic push rod 3, the clamping plate 9 is moved close to each other front and back and in close contact with the front and back sides of the workpiece by the driving component, and the pressing plate 12 is moved downward and in close contact with the top of the workpiece by the lifting component, thereby achieving the goal of fixing the workpiece before autofocusing the workpiece, avoiding the phenomenon of the workpiece being offset during the subsequent upward movement for autofocusing, avoiding the deviation between the autofocus point position of the workpiece and the predetermined autofocus point position, and solving the problems raised in the above-mentioned background technology.

[0026] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic focusing device for a laser marking machine, comprising a base (1), characterized in that: The top of the base (1) is fixedly mounted with a mounting plate (2), the top of the mounting plate (2) is fixedly mounted with a hydraulic push rod (3), the output end of the hydraulic push rod (3) is fixedly mounted with a placement plate (4), the front and rear sides of the placement plate (4) are both provided with drive components, the top of the placement plate (4) is provided with a clamping plate (9) through the drive component, the top of the clamping plate (9) is provided with a lifting component, the top of the clamping plate (9) is provided with a pressing plate (12) through the lifting component, and the top of the base (1) is fixedly mounted with a support A support frame (13), wherein a left-right moving component is arranged inside the support frame (13), a connecting plate (16) is arranged inside the support frame (13) through the left-right moving component, a front-back moving component is arranged at the bottom of the connecting plate (16), a laser marking machine body (19) is arranged at the bottom of the connecting plate (16) through the front-back moving component, a laser lens (20) and a distance sensor (21) are fixedly installed at the bottom of the laser marking machine body (19), and a controller (22) is fixedly installed on the front side of the support frame (13).

2. The automatic focusing device of a laser marking machine according to claim 1, characterized in that: The driving assembly comprises a fixing frame (5) arranged on the front and rear sides of the placement plate (4); a driving motor (6) is fixedly mounted on the surface of the fixing frame (5); a screw rod (7) is fixedly mounted on the output end of the driving motor (6); the screw rod (7) is rotatably connected to the fixing frame (5); a moving block (8) is threadedly connected to the surface of the screw rod (7); the moving block (8) is slidably connected to the fixing frame (5); and the moving block (8) is fixedly connected to a clamping plate (9).

3. The automatic focusing device of a laser marking machine according to claim 1, characterized in that: The lifting assembly comprises a fixed plate (10) arranged on the top of the clamping plate (9), an electric push rod (11) is fixedly installed on the inner wall of the fixed plate (10), and the output end of the electric push rod (11) is fixedly connected to the pressing plate (12).

4. The automatic focusing device of a laser marking machine according to claim 1, characterized in that: The left-right moving assembly comprises a first linear motor (14) arranged on the inner wall of the support frame (13); a first moving seat (15) is arranged on the first linear motor (14); and the first moving seat (15) is fixedly connected to a connecting plate (16).

5. The automatic focusing device of a laser marking machine according to claim 1, characterized in that: The forward and backward moving assembly comprises a second linear motor (17) arranged at the bottom of the connecting plate (16); a second moving seat (18) is arranged on the second linear motor (17); and the second moving seat (18) is fixedly connected to the laser marking machine body (19).

6. The automatic focusing device of a laser marking machine according to claim 1, characterized in that: A supporting leg (23) is fixedly mounted on the bottom of the base (1); there are a plurality of supporting legs (23), and the plurality of supporting legs (23) are symmetrically distributed.

7. The automatic focusing device of a laser marking machine according to claim 1, characterized in that: The support frame (13) is in an L-shaped structure and is made of metal material. The number of the clamping plates (9) is multiple, and the multiple clamping plates (9) are symmetrically distributed.

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