Multi-channel laser beam combining cleaning device and method

Abstract

The present invention provides a multi-path laser beam combining cleaning device, comprising a housing, a first vibrating lens, a second vibrating lens, a first laser field, a second laser field, a first motor, and a second motor; a first vibrating lens and a second vibrating lens are arranged opposite to each other, and respectively cooperate with the first laser field and the second laser field to form two scanning cleaning beams. The two cleaning beams clean simultaneously and effectively improve the cleaning efficiency of the device. At the same time, the first vibrating lens and the second vibrating lens are synchronously driven to swing by the symmetrically arranged first motor and the second motor, and the swing angles of the first vibrating lens and the second vibrating lens are always opposite, so that the first scanning cleaning beam formed by the first vibrating lens shape and the first laser field can cross-over and overlap with the second scanning cleaning beam formed by the second vibrating lens and the second laser field to form a composite scanning cleaning area, effectively avoiding the problem of residual contaminants and poor cleaning degree of the object to be cleaned due to the large spacing between the cleaning beams.

Description

Technical Field

[0001] The present invention relates to the field of laser cleaning, and in particular to a multi-path laser beam combining cleaning device and a method thereof. Background Art

[0002] Laser cleaning is a new cleaning technology that is currently developing rapidly. Its biggest advantage is that it is green and pollution-free, so it is widely used in industrial production. Traditional laser cleaning devices usually use a focused light spot for rapid scanning to form a linear light spot as a linear light spot for cleaning. The linear light spot is fixed on the object to be cleaned and then translated, or the linear spot is fixed on the object to be cleaned and translated to achieve two-dimensional plane cleaning of the object to be cleaned, and the cleaning efficiency is low. Subsequently, in order to improve the cleaning efficiency, the object to be cleaned will be transported and translated in a direction perpendicular to the laser scanning direction. Since the one-dimensional rapid scanning of the focused light spot and the translation of the object to be cleaned are carried out synchronously, the scanning and cleaning path of the focused light spot is a zigzag scanning and cleaning. Once the scanning translation speed of the light spot and / or the translation speed of the object to be cleaned increases, the spacing between the rapidly scanned linear light spots will increase, resulting in residual pollutants and poor cleaning. Therefore, the industry urgently needs a new multi-channel laser beam combining cleaning device and method. Summary of the Invention

[0003] The object of the present invention is to provide a multi-path laser beam combining cleaning device, comprising a first oscillating lens, a second oscillating lens, a first laser field, a second laser field, a first motor and a second motor in a shell, wherein the first motor and the second motor are respectively arranged at relative positions on the two outer sides of the shell; the first oscillating lens is arranged on the output shaft of the first motor, and the first oscillating lens is located in the shell; the second oscillating lens is arranged on the output shaft of the second motor, and the second oscillating lens is located in the shell; a first light through hole and a second light through hole are provided on the shell, the first light through hole is used for a first cleaning beam to pass through and irradiate the first oscillating lens, the first oscillating lens reflects the first cleaning beam to the first laser field, the first laser field focuses the first cleaning beam to form a scanning cleaning light path for cleaning the workpiece to be cleaned; the second light through hole is used for a second cleaning beam to pass through and irradiate the second oscillating lens, the second oscillating lens reflects the second cleaning beam to the second laser field, the second laser field focuses the second cleaning beam to form another scanning cleaning beam path for cleaning the workpiece to be cleaned.

[0004] Furthermore, the first motor drives the first vibrating lens to swing back and forth, and the second motor drives the second vibrating lens to swing back and forth. The swinging directions of the first vibrating lens driven by the first motor and the second vibrating lens driven by the second motor are always opposite.

[0005] Furthermore, the first motor drives the first vibrating lens to swing back and forth at an angle of ±15°, and the second motor drives the second vibrating lens to swing back and forth at an angle of ±15°.

[0006] Furthermore, the first vibrating lens and the second vibrating lens are coated with a total reflection film, and the reflection wavelength of the total reflection film is consistent with the cleaning light beam.

[0007] Furthermore, the first motor and the second motor are servo motors.

[0008] Furthermore, the multi-channel laser beam combining cleaning device of the present application includes a laser generator, the laser output end of the laser generator is arranged opposite to the light hole of the shell, and the laser generator is used to generate a cleaning beam.

[0009] Furthermore, the multi-channel laser beam combining cleaning device of the present application includes a controller for controlling the generation of a cleaning beam of the laser generator, for controlling the reciprocating rotation of the first motor and the second motor, and for adjusting the swing angles of the first vibrating lens and the second vibrating lens.

[0010] Furthermore, the multi-channel laser beam combining and cleaning device of the present application includes an alarm, and a control end of the alarm is connected to the controller, and is used to issue an alarm according to the judgment structure of the controller.

[0011] The present application provides a multi-channel laser beam combining cleaning method, which uses the multi-channel laser beam combining cleaning device described above, and includes the following steps:

[0012] The multi-channel laser cleaning beam combining device is installed on a scanning work platform, and the scanning work platform can drive the object to be cleaned to reciprocate perpendicular to the laser scanning direction;

[0013] Start the multi-path laser cleaning beam combining device, and control the first motor and the second motor through the controller to drive the first laser field mirror and the second laser field mirror to swing in opposite directions respectively, forming two cross-superimposed laser cleaning paths, the first cleaning beam scans back and forth along the first direction, and the second cleaning beam scans back and forth along the second direction; the two cleaning beams cross-superimpose and clean the surface of the object to be cleaned.

[0014] The application of the technical solution of the present invention has the following beneficial effects:

[0015] The present invention provides a multi-path laser beam combining cleaning device. A first vibrating lens and a second vibrating lens are arranged opposite to each other, and cooperate with a first laser field and a second laser field to form two scanning cleaning beams. The two cleaning beams simultaneously clean the object to be cleaned, effectively improving the cleaning efficiency of the device. At the same time, the first vibrating lens and the second vibrating lens are synchronously driven to swing by a symmetrically arranged first motor and a second motor, and the swing angles of the first vibrating lens and the second vibrating lens are always opposite, so that the first scanning cleaning beam formed by the first vibrating lens and the first laser field can cross-over and overlap with the second scanning cleaning beam formed by the second vibrating lens and the second laser field to form a composite scanning cleaning area, effectively avoiding the problem of residual contaminants and poor cleaning degree of the object to be cleaned due to the large spacing between the cleaning beams.

[0016] The present application provides a multi-path laser cleaning and combined beam cleaning method, which is simple and convenient to operate. By controlling the swing direction and swing angle of the first laser field mirror and the second laser field mirror through a controller, two cross-overlapping laser cleaning paths can be formed to simultaneously clean the object to be cleaned. The cleaning efficiency is high, and the problem of residual contaminants and poor cleaning degree of the object to be cleaned caused by the large spacing between single cleaning beams is effectively avoided.

[0017] In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0019] Figure 1 This is a structural diagram of a multi-channel laser beam combining and cleaning device according to this embodiment;

[0020] Figure 2 This is a schematic diagram of a scanning cleaning path of a multi-channel laser beam combining cleaning device according to this embodiment;

[0021] Among them, 1. Shell, 21. First motor, 22. Second motor, 23. First vibrating lens, 24. Second vibrating lens, 31. First laser field, 32. Second laser field, 41. First cleaning beam, 42. Second cleaning beam, 51. First scanning cleaning beam, 52. Second scanning cleaning beam, 6. Composite superimposed scanning cleaning area, 61. First light hole, 62. Second light hole. DETAILED DESCRIPTION

[0022] The embodiments of the present invention are described in detail below with reference to the accompanying drawings. However, the present invention can be implemented in many different ways as defined and covered by the claims.

[0023] Example 1:

[0024] See also Figures 1 to 2 A multi-channel laser beam combining cleaning device includes a shell 1, a first vibration mirror 23, a second vibration mirror 24, a first laser field 31, a second laser field 32, a first motor 21 and a second motor 22, and the first motor and the second motor are preferably servo motors; the first motor and the second motor are respectively provided at relative positions on the two outer sides of the shell, and the first motor and the second motor are coaxially arranged; the first vibration mirror is arranged on the output shaft of the first motor, and the first vibration mirror is located in the shell; the second vibration mirror is arranged on the output shaft of the second motor, and the second vibration mirror is located in the shell; the first vibration mirror and the second vibration mirror are symmetrically arranged, and the first vibration mirror and the second vibration mirror are both coated with a total reflection film, and the reflection wavelength of the total reflection film is consistent with the cleaning beam, which greatly reduces the energy loss during the reflection process of the cleaning tube bundle. ; A first light through hole 61 and a second light through hole 62 are provided on the shell 1, and a first laser field 31 and a second laser field 32 are respectively provided on the bottom of the shell 1; the first light through hole 61 is used for the first cleaning light beam 41 to pass through and irradiate the first vibrating lens 23, the first vibrating lens 23 reflects the first cleaning light beam 41 to the first laser field 31, the first laser field 31 focuses the first cleaning light beam 41 to form a first scanning cleaning light beam 51 for cleaning the workpiece to be cleaned; the second light through hole 62 is used for the second cleaning light beam 42 to pass through and irradiate the second vibrating lens 24, the second vibrating lens 24 reflects the second cleaning light beam 42 to the second laser field 32, the second laser field 32 focuses the second cleaning light beam 42 to form a second scanning cleaning light beam 52 for cleaning the workpiece to be cleaned.

[0025] The first motor 21 drives the first vibrating lens 23 to swing back and forth, and the second motor 22 drives the second vibrating lens 24 to swing back and forth, and the swing angle directions of the first vibrating lens driven by the first motor and the second vibrating lens driven by the second motor are always opposite; the first motor drives the first vibrating lens to swing back and forth at an angle of ±15°, and the second motor drives the second vibrating lens to swing back and forth at an angle of ±15°; the first vibrating lens and the second vibrating lens are symmetrically arranged, and the swing angles of the first vibrating lens and the second vibrating lens are always opposite, so that the cleaning path of the first scanning cleaning beam formed by the first cleaning light beam reflected by the first vibrating lens and focused by the first laser field is opposite to the cleaning path of the second scanning cleaning beam formed by the second cleaning light beam reflected by the second vibrating lens and focused by the second laser field. When the first cleaning light beam and the second cleaning light beam clean the object to be cleaned at the same time, the two cleaning paths are superimposed to form a composite scanning beam area 6 to clean the object to be cleaned, effectively avoiding the problem of residual contaminants and poor cleaning degree caused by the large spacing between cleaning spots (cleaning beams).

[0026] The device of the present application includes a laser generator, the laser output end of the laser generator is arranged opposite to the light hole of the shell, and the laser generator is used to generate a cleaning light beam.

[0027] The device of the present application includes a controller, which is electrically connected to the laser generator, the first motor and the second motor. The controller is used to control the generation of a cleaning beam of the laser generator, to control the reciprocating rotation of the first motor and the second motor, and to adjust the swing angle of the first vibrating lens and the second vibrating lens.

[0028] The present application provides a multi-channel laser cleaning and beam combining cleaning method, which uses the multi-channel laser cleaning and beam combining device described above, and includes the following steps:

[0029] The multi-channel laser cleaning beam combining device is installed on a scanning work platform, and the scanning work platform can drive the object to be cleaned to reciprocate perpendicular to the laser scanning direction within the scanning area of ​​the multi-channel laser cleaning beam combining device;

[0030] Start the multi-channel laser cleaning beam combining device, and control the first motor and the second motor through the controller to drive the first laser field mirror and the second laser field mirror to swing in opposite directions respectively, and the swing period and amplitude are consistent, forming two cross-superimposed laser cleaning paths. The first cleaning beam scans the object to be cleaned back and forth along the first direction, and the second cleaning beam scans the object to be cleaned back and forth along the second direction; the two cleaning beams cross-superimpose to form a composite area to scan and clean the surface of the object to be cleaned.

[0031] The present application discloses a multi-path laser cleaning and beam-combining cleaning method, which is simple and convenient to operate. By controlling the swing direction and swing angle of the first laser field mirror and the second laser field mirror through a controller, two cross-overlapping laser cleaning paths can be formed to simultaneously clean the object to be cleaned. The cleaning efficiency is high, and the problem of residual contaminants and poor cleaning degree of the object to be cleaned caused by the large spacing between single cleaning beams is effectively avoided.

[0032] The device of the present application includes an alarm, the control end of which is electrically connected to the controller and is used to issue an alarm according to the judgment structure of the controller; the controller is preferably a single-chip microcomputer or a PLC programmable controller.

[0033] It should be noted that the scanning workbench is an existing transport platform device, and the control system integrated in the single chip microcomputer or PLC programmable controller refers to the conventional settings of the existing technology.

[0034] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A multi-channel laser beam combining cleaning device, characterized in that: The invention comprises a shell, a first vibrating lens, a second vibrating lens, a first laser field, a second laser field, a first motor and a second motor, wherein the first motor and the second motor are respectively provided at opposite positions on two opposite outer sides of the shell; the first vibrating lens is provided on the output shaft of the first motor and is located in the shell; the second vibrating lens is provided on the output shaft of the second motor and is located in the shell; the shell is provided with a first light hole and a second light hole, the first light hole is used for a first cleaning light beam to pass through and irradiate the first vibrating lens, the first vibrating lens reflects the first cleaning light beam to the first laser field, the first laser field focuses the first cleaning light beam to form a scanning cleaning light path for cleaning the workpiece to be cleaned; the second light hole is used for a second cleaning light beam to pass through and irradiate the second vibrating lens, the second vibrating lens reflects the second cleaning light beam to the second laser field, the second laser field focuses the second cleaning light beam to form another scanning cleaning light path for cleaning the workpiece to be cleaned; The first motor drives the first vibrating lens to swing back and forth, and the second motor drives the second vibrating lens to swing back and forth. The swinging directions of the first vibrating lens driven by the first motor and the second vibrating lens driven by the second motor are always opposite; The multi-channel laser beam combining cleaning device is installed on a scanning workbench, and the scanning workbench can drive the workpiece to be cleaned to reciprocate perpendicular to the laser scanning direction within the scanning area of ​​the multi-channel laser beam combining cleaning device; The two cleaning light beams are cross-superimposed to clean the surface of the workpiece to be cleaned.

2. The multi-channel laser beam combining cleaning device according to claim 1, characterized in that: The first motor drives the first vibrating lens to swing back and forth at an angle of ±15°, and the second motor drives the second vibrating lens to swing back and forth at an angle of ±15°.

3. The multi-channel laser beam combining cleaning device according to claim 2, characterized in that: The first galvanometer lens and the second galvanometer lens are coated with a total reflection film, and the reflection wavelength of the total reflection film is consistent with the cleaning light beam.

4. The multi-channel laser beam combining cleaning device according to claim 3, characterized in that: The first motor and the second motor are servo motors.

5. The multi-channel laser beam combining cleaning device according to claim 2, characterized in that: The utility model comprises a laser generator, wherein the laser output end of the laser generator is arranged opposite to the light hole of the shell, and the laser generator is used for generating a cleaning light beam.

6. The multi-channel laser beam combining cleaning device according to any one of claims 1 to 5, characterized in that: The controller is used to control the generation of a cleaning beam of a laser generator, control the reciprocating rotation of the first motor and the second motor, and adjust the swing angles of the first vibrating lens and the second vibrating lens.

7. The multi-channel laser beam combining cleaning device according to claim 6, characterized in that: It includes an alarm, a control end of which is connected to the controller and is used to issue an alarm according to the judgment structure of the controller.

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