Automatic adjusting focusing device and laser engraving machine

Abstract

The utility model provides an automatic adjusting focusing device, comprising a housing; the rotating unit is installed on the outer side of the shell and used for driving the laser to move so that the laser can be close to or away from the to-be-machined workpiece; the laser is movably mounted in the shell through a driven unit; the driven unit is in occlusion connection with the rotating unit so as to drive the laser to move. The focusing distance is automatically adjusted through a mechanical device, the technical problem that the laser focal length cannot be automatically adjusted by manually adjusting the laser focal length of the laser head is solved, the use experience is improved, and great convenience is brought to a user.

Description

Technical Field

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

[0002] Laser engraving and cutting machines focus the laser light emitted from a laser into a laser beam through an optical path system. The laser beam irradiates the surface of the workpiece, causing the workpiece to reach a melting point or boiling point. At the same time, high-pressure gas coaxial with the beam blows away the melted or vaporized material. As the relative position of the beam and the workpiece moves, the material eventually forms a texture or cut, thereby achieving the purpose of engraving or cutting.

[0003] However, the existing laser engraving and cutting heads can only manually adjust the distance between the laser energy focus emitted by the laser and the workpiece surface, and the laser head cannot automatically adjust the distance between the laser focus and the workpiece surface.

[0004] Therefore, how to realize the automatic adjustment of the distance between the laser focus and the workpiece surface by the laser head is a technical problem to be solved urgently in this field. Utility Model Content

[0005] The utility model aims to provide an automatic focusing adjustment device and a laser engraving machine, which can well solve the technical problem that the existing laser engraving head can only manually adjust the distance between the laser energy focus emitted by the laser and the workpiece surface, so the laser head cannot automatically complete the distance adjustment between the laser focus and the workpiece surface.

[0006] The utility model provides an automatic focusing adjustment device and a laser engraving machine.

[0007] On one hand, the utility model provides an automatic focus adjustment device, comprising a shell; a rotating unit, which is installed on the outside of the shell and is used to drive a laser to move closer to or away from a workpiece to be processed; a laser, which is movably installed inside the shell through a driven unit; the driven unit is engaged with the rotating unit to achieve driving the laser to move.

[0008] Furthermore, the rotating unit includes an electric module and a gear module; the gear module is fixedly connected to the electric module.

[0009] Furthermore, the driven unit includes a rack module; the rack module is meshed and connected with the gear module, so that the electric module drives the gear module to rotate and then drives the rack module to move linearly.

[0010] Furthermore, the driven unit is fixed on a heat dissipation unit; and the heat dissipation unit is used to dissipate heat for the laser.

[0011] Furthermore, the rack module is fixedly mounted on the heat dissipation unit to enable the heat dissipation unit and the laser to move back and forth synchronously.

[0012] Furthermore, it also includes a circuit board unit; the circuit board unit is fixedly installed inside the shell; the circuit board unit is connected to the electric module signal and controls the opening or closing of the electric module.

[0013] Furthermore, it also includes a guide light axis module; one end of the guide light axis module is fixed to the top end of the shell.

[0014] Furthermore, the heat dissipation unit is provided with a sliding hole; the sliding hole is a cylindrical structure.

[0015] Furthermore, a sleeve is arranged in the sliding hole; the sleeve is slidably connected to the guide light axis module, so that the heat sink can move back and forth along the guide light axis module through the sleeve arranged inside the sliding hole.

[0016] The utility model provides a laser engraving machine in a second aspect. The laser engraving machine comprises a body and a laser. The body comprises an automatic focus adjustment device. The laser is fixedly mounted on the automatic focus adjustment device.

[0017] Compared with the prior art, the utility model provides an automatic focus adjustment device, including a housing; a rotating unit, which is installed outside the housing and is used to drive the laser to move so as to move it closer to or farther from the workpiece to be processed; a laser, which is movably installed inside the housing through a driven unit; the driven unit is engaged with the rotating unit to drive the laser to move. The focus distance is automatically adjusted by a mechanical device, which solves the technical difficulty that the laser head cannot automatically adjust the laser focus when manually adjusting the laser focus, improves the user experience, and brings great convenience to the user. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A three-dimensional exploded schematic diagram of the automatic focusing adjustment device provided by the utility model;

[0019] Figure 2 for Figure 1 A schematic diagram of a three-dimensional assembly structure of an automatic focusing adjustment device shown;

[0020] Figure 3 for Figure 1 The schematic diagram of the top view structure of the automatic focusing adjustment device is shown. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] Please refer to Figure 1 , Figure 2 and Figure 3 , Figure 1 A three-dimensional exploded schematic diagram of the automatic focusing adjustment device provided by the utility model; Figure 2 for Figure 1 A schematic diagram of a three-dimensional assembly structure of an automatic focusing adjustment device shown; Figure 3 for Figure 1 The schematic diagram of the top view structure of the automatic focusing adjustment device is shown.

[0023] On one hand, the utility model provides an automatic focusing adjustment device, comprising a housing 10; a rotating unit, which is installed on the outside of the housing 10 and is used to drive a laser 60 to move closer to or away from a workpiece to be processed; the laser 60 is movably installed inside the housing 10 through a rack 41; the rack 41 is engaged with the rotating unit to realize driving the laser 60 to move.

[0024] The rotating unit includes a motor 80 and a gear 70 ; the gear 70 is fixedly connected to the motor 80 , and the gear 70 is connected to the rotating shaft of the motor 80 , and the rotation of the rotating shaft of the motor 80 drives the rotation of the gear 70 .

[0025] In one embodiment, the gear 70 is connected to the motor 80 via a belt.

[0026] The rack 41 is meshed with the gear 70 to realize the linear motion of the rack 41 by the motor 80 driving the gear 70 to rotate. The rack 41 is fixed on the radiator 40; the radiator 40 is used to dissipate heat for the laser 60. At the same time, the laser 60 is fixedly mounted on the radiator 40, and the rack 41 drives the radiator 40 to move straightly, and at the same time drives the laser 60 to realize linear back and forth motion.

[0027] from Figure 3 It can be seen that the heat sink 40 half wraps the laser 60 to achieve a better heat dissipation effect.

[0028] The automatic focusing adjustment device further includes a laser circuit board 30 , and the laser circuit board 30 is fixedly installed inside the housing 10 . The laser circuit board 30 is electrically connected to the motor 80 , and controls the motor 80 to be turned on or off.

[0029] The automatic focusing device further includes an optical axis 20 , one end of which is fixed to the top of the housing 10 .

[0030] It should be noted that the optical axis 20 is pressed into the hole of the housing 10 and fixed.

[0031] from Figure 1 It can be seen that the automatic focusing device includes two optical axes 20 , so there are corresponding mounting holes for the two optical axes 20 in the housing 10 .

[0032] The heat sink 40 is provided with a sliding hole 42, and the sliding hole 42 is a cylindrical structure, wherein a copper sleeve 50 is provided in the sliding hole 42. The copper sleeve 50 is slidably connected with the optical axis 20, so that the heat sink 40 can be directional and move back and forth along the optical axis 20 through the copper sleeve 50 provided inside the sliding hole 42.

[0033] from Figure 1 It can be seen that the number of copper sleeves 50 is 2; the number of optical axes 20 is 2; and the number of sliding holes 42 is 2.

[0034] It should be noted that by setting the copper sleeve 50 and the optical axis 20 to be slidably connected, and the copper sleeve 50 and the optical axis 20 move in the sliding hole 42 on the heat sink 40, the reciprocating motion of the automatic focus adjustment device is a linear motion without offset.

[0035] The utility model provides a laser engraving machine in a second aspect. The laser engraving machine comprises a body and a laser. The body comprises an automatic focus adjustment device. The laser is fixedly mounted on the automatic focus adjustment device.

[0036] Compared with the prior art, the utility model provides an automatic focus adjustment device and a laser engraving machine (not shown). The automatic focus adjustment device includes a housing 10, wherein the housing 10 is used to install the automatic focus adjustment device on the laser engraving machine. The automatic focus adjustment device also includes a rotating unit, which is installed on the outside of the housing 10 and is used to drive the laser 60 to move closer to or away from the workpiece to be processed; the laser 60 is movably installed inside the housing 10 through a rack 41; the rack 41 is engaged with the rotating unit to achieve driving the laser 60 to move.

[0037] The above descriptions are only some embodiments of the present invention, and do not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the utility model specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An automatic focus adjustment device, characterized in that: include: case; A rotating unit, which is mounted outside the housing and is used to drive the laser to move closer to or away from a workpiece to be processed; A laser, which is movably mounted inside the housing via a driven unit; The driven unit is meshedly connected with the rotating unit to drive the laser to move.

2. The automatic focusing device according to claim 1, characterized in that: The rotating unit includes an electric module and a gear module; the gear module is fixedly connected to the electric module.

3. The automatic focusing adjustment device according to claim 2, characterized in that: The driven unit includes a rack module; the rack module is meshed and connected with the gear module, so that the electric module drives the gear module to rotate and then drives the rack module to move linearly.

4. The automatic focusing device according to claim 3, characterized in that: The driven unit is fixed on the heat dissipation unit; the heat dissipation unit is used to dissipate heat for the laser.

5. The automatic focusing adjustment device according to claim 4, characterized in that: The rack module is fixedly mounted on the heat dissipation unit to enable the heat dissipation unit and the laser to move back and forth synchronously.

6. The automatic focusing device according to claim 2, characterized in that: It also includes a circuit board unit; the circuit board unit is fixedly installed inside the shell; the circuit board unit is connected to the electric module signal and controls the opening or closing of the electric module.

7. The automatic focusing device according to claim 5, characterized in that: Also includes a guide light axis module; One end of the guide light axis module is fixed to the top end of the shell.

8. The automatic focusing device according to claim 7, characterized in that: The heat dissipation unit is provided with a sliding hole; the sliding hole is a cylindrical structure.

9. The automatic focusing device according to claim 8, characterized in that: A sleeve is arranged in the sliding hole; the sleeve is slidably connected to the guide light axis module, so that the heat dissipation unit can move back and forth along the guide light axis module through the sleeve arranged inside the sliding hole.

10. A laser engraving machine, characterized in that: The invention comprises the automatic focusing adjustment device according to any one of claims 1 to 9.

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