Laser processing equipment

Abstract

The utility model provides laser processing equipment, and relates to the field of laser processing. The laser processing equipment comprises a rack, and a processing seat, a laser processing mechanism, a visual positioning mechanism and a control mechanism which are arranged on the rack, the machining base is arranged on the rack and moves relative to the rack. The laser processing mechanism comprises a light path module and a Z-axis movement module, the light path module is provided with a galvanometer and a field lens, and the driving end of the Z-axis movement module is fixedly connected with the galvanometer and the field lens; the positioning area of the visual positioning mechanism is located in the movement stroke range of the machining base. The control mechanism is electrically connected with the visual positioning mechanism and the Z-axis movement module. The position information of the workpiece is conveyed to the control mechanism through the visual positioning mechanism, then movement control over the Z-axis movement module is achieved through the control mechanism, the galvanometer and the field lens are made to move, the machining requirements for different curved surfaces are met, continuous laser machining is achieved, and the attractiveness of the appearance of the workpiece is improved.

Description

Technical Field

[0001] The present application relates to the field of laser processing, and in particular, to a laser processing device. Background Art

[0002] When laser processing a workpiece with multiple curved surfaces, the field lens of the laser processing equipment cannot cover the height difference of the workpiece's curved surfaces. Under different processing angles, the workpiece processed by the laser processing equipment will have color differences at different positions, and there will be traces of splicing between adjacent curved surfaces due to discontinuity in processing. The color difference is more obvious, which affects the appearance of the workpiece and cannot meet the processing quality requirements. Utility Model Content

[0003] The purpose of this application is to provide a laser processing equipment that can reduce the color difference of the workpiece at different positions, improve the aesthetics of the workpiece appearance, and meet the processing quality requirements.

[0004] In a first aspect, the utility model provides a laser processing device, the laser processing device comprising a frame and a processing seat mounted on the frame, a laser processing mechanism, a visual positioning mechanism and a control mechanism;

[0005] The processing seat is mounted on the frame and moves relative to the frame;

[0006] The laser processing mechanism comprises an optical path module and a Z-axis motion module, the optical path module is provided with a galvanometer and a field lens, and the driving end of the Z-axis motion module is fixedly connected to the galvanometer and the field lens;

[0007] The positioning area of ​​the visual positioning mechanism is located within the movement range of the processing seat;

[0008] The control mechanism is electrically connected to the visual positioning mechanism and the Z-axis motion module respectively.

[0009] In an optional embodiment, the frame is provided with a first motion module, a second motion module and a third motion module, the second motion module is provided on the translation end of the first motion module, the third motion module is provided on the translation end of the second motion module, the processing seat is provided on the rotation end of the third motion module, and the control mechanism is also electrically connected to the first motion module, the second motion module and the third motion module respectively.

[0010] In an optional embodiment, the first motion module drives the processing seat to translate along the X-axis, the second motion module drives the processing seat to translate along the Y-axis, and the third motion module drives the processing seat to rotate around the R-axis, and the X-axis, the Y-axis and the R-axis are perpendicular to each other.

[0011] In an optional embodiment, the optical path module further includes a laser, a first reflector, a beam expander, and a second reflector arranged in sequence, the galvanometer is located between the second reflector and the field lens, and the laser emitted by the laser is emitted from the field lens.

[0012] In an optional embodiment, the Z-axis motion module includes a driving member and a lead screw, the lead screw is connected to the driving end of the driving member, and the lead screw is transmission-connected to the galvanometer and the field mirror.

[0013] In an optional embodiment, the visual positioning mechanism includes at least two groups of visual positioning modules, and each group of the visual positioning modules is electrically connected to the control mechanism.

[0014] In an optional embodiment, each of the visual positioning modules includes a CCD camera, the CCD cameras are electrically connected to the control mechanism, and the CCD cameras are arranged toward the processing seat.

[0015] In an optional embodiment, the control mechanism is a computer control mechanism.

[0016] In an optional embodiment, the processing seat is provided with a processing position and a clamping fixture.

[0017] In an optional embodiment, the laser processing equipment further includes a dust removal mechanism, and the dust removal mechanism is installed on the frame.

[0018] Compared with the prior art, the beneficial effects of this application are:

[0019] This application uses a processing seat as the processing position of the workpiece, and uses a visual positioning mechanism to transmit the position information of the workpiece to a control mechanism, and then uses the control mechanism to realize the movement control of the Z-axis motion module, so that the galvanometer and field mirror are displaced to meet the processing requirements of different curved surfaces, realize continuous laser processing, improve the aesthetic appearance of the workpiece, and meet the processing quality requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 A schematic diagram of the three-dimensional structure of laser processing equipment in some embodiments is shown;

[0022] Figure 2Schematic diagrams of assembling a rack and a mounting base in some embodiments are shown (some elements are omitted);

[0023] Figure 3 Schematic diagrams of assembling the laser processing mechanism and the dust removal mechanism in some embodiments are shown;

[0024] Figure 4 A schematic diagram of the structure of the visual positioning mechanism in some embodiments is shown.

[0025] Description of main component symbols:

[0026] 100-frame; 110-first motion module; 120-second motion module; 130-third motion module; 200-processing seat; 210-processing position; 220-clamping fixture; 300-laser processing mechanism; 310-optical path module; 311-laser; 312-first reflector; 313-beam expander; 314-second reflector; 315-galvanometer; 316-field mirror; 320-Z-axis motion module; 321-driving part; 322-screw; 400-visual positioning mechanism; 410-first visual positioning module; 420-second visual positioning module; 401-CCD camera; 402-light source; 500-dust removal mechanism. DETAILED DESCRIPTION

[0027] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0028] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0029] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0030] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0031] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0032] Embodiment 1

[0033] This embodiment is applicable to laser processing of a workpiece with multiple curved surfaces. The multiple curved surfaces here refer to a workpiece having multiple curved surfaces, and adjacent curved surfaces are arranged at an angle. The above-mentioned laser processing includes but is not limited to removing coatings, processing specific patterns or performing other surface treatments. As the requirements for the appearance of workpieces are getting higher and higher, different curved surfaces need to be processed with continuous and consistent effects in order to meet the processing quality requirements.

[0034] See also Figure 1 This embodiment provides a laser processing device. Specifically, the laser processing device includes a frame 100 and a processing seat 200 installed on the frame 100, a laser processing mechanism 300, a visual positioning mechanism 400 and a control mechanism (not shown in the figure).

[0035] Please refer to Figure 1 and Figure 2 The processing seat 200 is installed on the frame 100 , and the processing seat 200 is provided with a processing position 210 and a clamping fixture 220 .

[0036] In this embodiment, the processing position 210 is configured as a horizontal table, which can provide a stable placement position for the workpiece, reduce shaking during laser processing, and ensure the processing quality of the workpiece. It is understandable that the placement space of the processing position 210 should be larger than the maximum size of the workpiece, so as to ensure that the workpiece is completely placed on the processing position 210.

[0037] In actual use, the clamping fixture 220 can be controlled pneumatically, electrically or manually to clamp the workpiece. For example, the clamping fixture 220 is pneumatically controlled by a cylinder, or the clamping fixture 220 is electrically controlled by a motor.

[0038] The processing seat 200 moves relative to the frame 100. Here, in order to realize the movement of the processing seat 200 relative to the frame 100, the present embodiment can be set that the frame 100 is provided with a first motion module 110, a second motion module 120 and a third motion module 130, the second motion module 120 is arranged on the translation end of the first motion module 110, the third motion module 130 is arranged on the translation end of the second motion module 120, and the processing seat 200 is arranged on the rotation end of the third motion module 130.

[0039] It can be understood that in this embodiment, the workpiece is tightly clamped by the clamping fixture 220 . Even when the processing seat 200 moves relative to the frame 100 , the workpiece on the processing seat 200 can maintain the original clamping state under the clamping of the clamping fixture 220 .

[0040] This embodiment can also be set up that the first motion module 110 drives the processing seat 200 to translate along the X-axis, the second motion module 120 drives the processing seat 200 to translate along the Y-axis, and the third motion module 130 drives the processing seat 200 to rotate around the R-axis, and the X-axis, Y-axis and R-axis are perpendicular to each other.

[0041] In some embodiments, the first motion module 110 and the second motion module 120 are both configured as linear motor modules, and the third motion module 130 is configured as a direct drive motor (English name: Direct Drive Motor).

[0042] In some other embodiments, the first motion module 110 and the second motion module 120 may also be configured as screw modules or other elements capable of achieving linear motion, and the third motion module 130 may also be configured as a hollow rotating table or other elements capable of achieving rotational motion.

[0043] Please refer to Figure 1 and Figure 3 The laser processing mechanism 300 includes an optical path module 310 and a Z-axis motion module 320 .

[0044] The optical path module 310 is provided with a galvanometer 315 and a field lens 316 , and the galvanometer 315 here can be a 3D galvanometer or a 2D galvanometer.

[0045] The driving end of the Z-axis motion module 320 is fixedly connected to the galvanometer 315 and the field lens 316. In this embodiment, the Z-axis motion module 320 is used to drive the galvanometer 315 and the field lens 316 to move up and down, thereby achieving the purpose of adjusting the focus of the optical path module 310. Under the premise of ensuring the processing accuracy, the processing range of the laser processing equipment is expanded to meet the processing requirements of multiple curved surfaces.

[0046] Specifically, the Z-axis motion module 320 includes a driving member 321 and a lead screw 322 . The lead screw 322 is connected to the driving end of the driving member 321 , and the lead screw 322 is transmission-connected to the galvanometer 315 and the field lens 316 . The driving member 321 is configured as a servo motor.

[0047] Please refer to Figure 1 and Figure 4 , the positioning area of ​​the visual positioning mechanism 400 is located within the movement range of the processing seat 200, and the visual positioning mechanism 400 is arranged toward the processing seat 200 and is used to obtain the size and position information of the workpiece;

[0048] Specifically, the visual positioning mechanism 400 includes at least two groups of visual positioning modules.

[0049] In this embodiment, two groups of visual positioning modules are used as exemplary illustrations. For ease of description and understanding, one group of visual positioning modules is defined as a first visual positioning module 410 , and the other group of visual positioning modules is defined as a second visual positioning module 420 .

[0050] The first vision positioning module 410 is disposed above the processing seat 200 and is used to locate the upper size and position of the workpiece. The second vision positioning module 420 is disposed on the side of the processing seat 200 and is used to locate the side size and position of the workpiece.

[0051] In this embodiment, the first visual positioning module 410 and the processing seat 200 are arranged at intervals in the vertical direction, and the second visual positioning module 420 is arranged at intervals in the horizontal direction, that is, the line connecting the first visual positioning module 410 and the processing seat 200 and the line connecting the second visual positioning module 420 and the processing seat 200 are perpendicular to each other.

[0052] It is understandable that the number of vision positioning modules can be three, four or even more, and the setting positions of the vision positioning modules can also be adaptively adjusted as needed.

[0053] In some embodiments, each visual positioning module includes a CCD camera 401 , the CCD cameras 401 are electrically connected to the control mechanism, and a lens is provided at one end of the CCD camera 401 facing the processing seat 200 .

[0054] In some other embodiments, the CCD camera 401 may be replaced by a 3D camera, a line scan camera, or other visual positioning devices, which are not limited herein.

[0055] To improve the accuracy of visual positioning, each visual positioning module also includes a light source 402. One CCD camera 401 is provided with at least one light source 402. Through the fill light effect of the light source 402, the visual positioning module is more sensitive to the capture of size and position.

[0056] See also Figures 1 to 3 The control mechanism is electrically connected to the visual positioning mechanism 400 and the Z-axis motion module 320 respectively, and the control mechanism is also electrically connected to the first motion module 110, the second motion module 120 and the third motion module 130 respectively.

[0057] In some embodiments, the control mechanism is a computer control mechanism. Of course, the control mechanism can also be other control mechanisms with control functions, which are not limited here.

[0058] First, the control mechanism is electrically connected to each group of visual positioning modules respectively, that is, after the visual positioning module mechanism transmits the position information of the workpiece to the control mechanism, the control mechanism judges and analyzes the received information.

[0059] Secondly, on one hand, the control mechanism is used to realize the movement control of the Z-axis motion module 320, so that the galvanometer 315 and the field lens 316 are displaced, so as to meet the processing requirements of different curved surfaces, realize continuous laser processing, improve the aesthetic appearance of the workpiece, and meet the processing quality requirements. On the other hand, the control mechanism is used to realize the movement control of the first motion module 110 and the second motion module 120 and the rotation control of the third motion module 130, so that the first motion module 110, the second motion module 120, the third motion module 130 and the Z-axis motion module 320 are multi-axis linked, so as to ensure that the surface of the workpiece is always located at the focal position of the laser, the processing effect is uniform, the surface texture is consistent, and no splicing marks and color difference are generated.

[0060] Based on the above content, this embodiment further explains the use principle of the laser processing equipment as follows:

[0061] S100. Place the workpiece on the processing position 210 and lock the clamping fixture 220.

[0062] S200. Start the laser processing equipment.

[0063] S300. Each visual positioning module captures and locates the size and position of the workpiece, and sends the acquired information to the control mechanism.

[0064] The control mechanism processes the information of the visual positioning module to generate motion trajectories of the first motion module 110 , the second motion module 120 and the third motion module 130 .

[0065] S500. The laser emits light, and the control mechanism controls the first motion module 110, the second motion module 120, the third motion module 130 and the Z-axis motion module 320, and the multi-axis linkage is performed according to the motion trajectory, so that the laser focus coincides with the workpiece processing surface, and multiple curved surfaces are processed at one time to complete the product processing.

[0066] Embodiment 2

[0067] See also Figure 3 Based on the first embodiment, this embodiment is improved in that the optical path module 310 also includes a laser 311, a first reflector 312, a beam expander 313, and a second reflector 314 arranged in sequence, the galvanometer 315 is located between the second reflector 314 and the field lens 316, and the laser emitted by the laser 311 is emitted from the field lens 316.

[0068] After being emitted from the laser 311 , the laser enters the beam expander 313 under the reflection effect of the first reflector 312 , and the beam expander 313 enlarges the light spot. Then, the laser enters the galvanometer 315 through the second reflector 314 , and finally is emitted from the field lens 316 .

[0069] In some other embodiments, the configuration of the optical path module 310 is different, for example, the setting of the reflector is increased or decreased, or the setting of the beam expander 313 is reduced, or the galvanometer 315 is replaced by a cutting head.

[0070] This embodiment can flexibly adjust the configuration of the optical path module 310 according to the requirements of the processing procedure, thereby realizing laser processing of different workpieces.

[0071] Embodiment 3

[0072] See also Figure 1 and Figure 3 Based on the first embodiment, this embodiment is improved in that the laser processing equipment further includes a dust removal mechanism 500 , and the dust removal mechanism 500 is installed on the frame 100 .

[0073] The dust removal mechanism 500 is used to remove dust and odor generated during the laser processing, reduce environmental pollution, and ensure the health of processing personnel.

[0074] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0075] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A laser processing device, characterized in that: It includes a frame and a processing seat, a laser processing mechanism, a visual positioning mechanism and a control mechanism installed on the frame; The processing seat is mounted on the frame and moves relative to the frame; The laser processing mechanism comprises an optical path module and a Z-axis motion module, the optical path module is provided with a galvanometer and a field lens, and the driving end of the Z-axis motion module is fixedly connected to the galvanometer and the field lens; The positioning area of ​​the visual positioning mechanism is located within the movement range of the processing seat; The control mechanism is electrically connected to the visual positioning mechanism and the Z-axis motion module respectively.

2. The laser processing equipment according to claim 1, characterized in that: The frame is provided with a first motion module, a second motion module and a third motion module. The second motion module is arranged on the translation end of the first motion module, the third motion module is arranged on the translation end of the second motion module, the processing seat is arranged on the rotation end of the third motion module, and the control mechanism is also electrically connected to the first motion module, the second motion module and the third motion module respectively.

3. The laser processing equipment according to claim 2, characterized in that: The first motion module drives the processing seat to translate along the X-axis, the second motion module drives the processing seat to translate along the Y-axis, and the third motion module drives the processing seat to rotate around the R-axis. The X-axis, the Y-axis and the R-axis are perpendicular to each other.

4. The laser processing equipment according to any one of claims 1 to 3, characterized in that: The optical path module also includes a laser, a first reflector, a beam expander, and a second reflector which are arranged in sequence. The galvanometer is located between the second reflector and the field mirror, and the laser emitted by the laser is emitted from the field mirror.

5. The laser processing equipment according to any one of claims 1 to 3, characterized in that: The Z-axis motion module includes a driving member and a lead screw, wherein the lead screw is connected to a driving end of the driving member, and the lead screw is transmission-connected to the galvanometer and the field mirror.

6. The laser processing equipment according to any one of claims 1 to 3, characterized in that: The visual positioning mechanism includes at least two groups of visual positioning modules, and each group of the visual positioning modules is electrically connected to the control mechanism.

7. The laser processing equipment according to claim 6, characterized in that: Each of the visual positioning modules includes a CCD camera, which is electrically connected to the control mechanism, and is arranged toward the processing seat.

8. The laser processing equipment according to any one of claims 1 to 3, characterized in that: The control mechanism is a computer control mechanism.

9. The laser processing equipment according to any one of claims 1 to 3, characterized in that: The processing seat is provided with a processing position and a clamping fixture.

10. The laser processing equipment according to any one of claims 1 to 3, characterized in that: It also includes a dust removal mechanism, which is installed on the frame.

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