Laser processing head and laser processing equipment

Abstract

The utility model provides a laser processing head and a laser processing device, the laser processing head comprises a focus lens seat, the focus lens seat is provided with an assembly hole extending along a laser transmission path, and a focus lens assembly is arranged in the assembly hole; a flow guide groove is formed in the side face, facing the focus direction of the laser machining head, of the focus lens base, the flow guide groove is located in the peripheral side of the assembly hole, a dust suction pipe is arranged on the focus lens base, one end of the dust suction pipe is communicated to the flow guide groove, and the other end of the dust suction pipe is connected with a negative pressure generator. Compared with the structure of a traditional metal plate cover, the flow guide groove is integrally formed in the focus lens base, the weight of the focus lens base can be reduced, meanwhile, the factor that the machining quality of a laser machining head is affected by vibration generated in the negative pressure dust removal process of the traditional metal plate cover is eliminated, the structure is compact, and the machining efficiency is improved. And the machining quality of the laser machining head is guaranteed while the dust removal effect is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of laser processing, in particular to a laser processing head and a laser processing device. Background Art

[0002] At present, for a laser processing head with a focusing lens structure, the dust removal effect at the processing position has always affected the processing quality of the laser processing head. However, most common dust removal methods are to install a sheet metal cover near the focus under the focusing lens and provide negative pressure dust suction through a dust collector. The sheet metal cover is placed under the focusing lens as a separate part, with a non-compact structure, large gaps, and average dust suction effect. At the same time, this structure additionally increases the overall weight of the laser head, and the sheet metal structure is prone to vibration under strong suction, affecting the processing effect. Summary of the Utility Model

[0003] Aiming at the deficiencies of the prior art, the purpose of the utility model is to provide a laser processing head with a compact structure, which ensures the processing quality of the laser processing head while ensuring the dust removal effect.

[0004] Another purpose of the utility model is to provide a laser processing device, which can effectively improve the laser processing quality.

[0005] The embodiments of the utility model are realized through the following technical solutions:

[0006] A laser processing head includes a focusing lens seat. An assembly hole is arranged on the focusing lens seat along the laser transmission path, and a focusing lens assembly is arranged in the assembly hole; on one side of the focusing lens seat facing the focus direction of the laser processing head, a flow guiding groove is configured, the flow guiding groove is located on the periphery of the assembly hole, a dust extraction pipe is arranged on the focusing lens seat, one end of the dust extraction pipe is communicated with the flow guiding groove, and the other end of the dust extraction pipe is connected with a negative pressure generator.

[0007] According to a preferred embodiment, the laser processing head further includes a focusing lens cover. The focusing lens cover includes a first body, and on one side of the first body facing the focus direction of the laser processing head, an assembly groove is configured, and a guiding groove is opened on the side wall of the assembly groove; the focusing lens seat includes a second body, and a guiding protrusion cooperating with the guiding groove is configured on the second body. The flow guiding groove and the assembly hole are both arranged on the second body, and the guiding protrusion can be embedded in the guiding groove; a light transmitting hole is configured on the first body. When the focusing lens seat and the focusing lens cover are assembled, the light transmitting hole is coaxial with the assembly hole.

[0008] According to a preferred embodiment, the flow guiding groove includes a sub-groove extending in a first direction and a main groove extending in a second direction. The sub-groove communicates with the main groove, and the first direction is perpendicular to the second direction; the dust extraction pipe communicates with the main groove or the sub-groove.

[0009] According to a preferred embodiment, the flow guiding groove includes a sub-groove extending in a first direction and a main groove extending in a second direction. The sub-groove communicates with the main groove, and the first direction is perpendicular to the second direction; the dust extraction pipe communicates with the main groove; in the opposite direction of the laser transmission path, the depth of the main groove is greater than that of the sub-groove.

[0010] According to a preferred embodiment, an extension groove is provided at the bottom of the assembly groove, and a buffer hole is provided through the bottom of the main groove. The main groove communicates with the extension groove through the buffer hole.

[0011] According to a preferred embodiment, a limiting plate is configured on the second body, and the guiding protrusion extends to the limiting plate.

[0012] According to a preferred embodiment, a dust extraction hole is provided through the limiting plate, and the dust extraction hole communicates with the flow guiding groove; the dust extraction pipe is installed in the dust extraction hole.

[0013] According to a preferred embodiment, the laser processing head further includes a bracket and a connecting plate. The bracket and the connecting plate are connected by an XY-axis manual displacement stage, and the focusing lens cover is installed on the XY-axis manual displacement stage.

[0014] According to a preferred embodiment, an extension frame is provided on the focusing lens cover, and a DOE mirror assembly is assembled on the extension frame. The DOE mirror assembly communicates with the light transmission hole through a mirror base through pipe.

[0015] A laser processing device includes the aforementioned laser processing head.

[0016] The technical solution of the embodiment of the present utility model has at least the following advantages and beneficial effects:

[0017] The negative pressure generator of the present utility model generates negative pressure in the flow guiding groove through the dust extraction pipe. During the processing, the generated dust enters the flow guiding groove along the direction away from the workpiece, that is, along the opposite direction of the laser transmission path, and is discharged through the dust extraction pipe, realizing the dust removal work at the processing position of the laser processing head. Compared with the structure of the traditional sheet metal cover, the flow guiding groove here is integrally provided on the focusing lens seat, which can reduce the weight of the focusing lens seat, and at the same time eliminates the factor that the traditional sheet metal cover generates vibration during negative pressure dust removal, affecting the processing quality of the laser processing head. The structure is compact, ensuring the dust removal effect while ensuring the processing quality of the laser processing head. Description of the Drawings

[0018] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the accompanying drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following accompanying drawings only show certain embodiments of the present utility model and should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other relevant accompanying drawings can also be obtained based on these drawings.

[0019] Figure 1 The first three-dimensional structure diagram of the laser processing head provided by the embodiment of the present utility model;

[0020] Figure 2 The second three-dimensional structure diagram of the laser processing head provided by the embodiment of the present utility model;

[0021] Figure 3 The third three-dimensional structure diagram of the laser processing head provided by the embodiment of the present utility model;

[0022] Figure 4 The right view structure diagram of the laser processing head provided by the embodiment of the present utility model;

[0023] Figure 5 For Figure 4 The cross-sectional view structure diagram of the A-A section in

[0024] Figure 6 The exploded structure diagram after the focusing lens cover and the focusing lens seat are assembled provided by the embodiment of the present utility model;

[0025] Figure 7 The three-dimensional structure diagram of the focusing lens seat provided by the embodiment of the present utility model.

[0026] Icon: 1, focusing lens cover; 11, first body; 12, assembly groove; 13, guiding groove; 14, extension groove; 15, light-transmitting hole; 2, focusing lens seat; 21, second body; 211, sub-groove; 212, main groove; 2121, buffer hole; 22, guiding protrusion; 23, assembly hole; 231, assembly section; 232, light-transmitting section; 24, limiting plate; 241, dust extraction hole; 25, focusing lens assembly; 3, dust extraction pipe; 4, bracket; 5, connecting plate; 6, XY-axis manual displacement table; 7, DOE lens assembly; 8, extension bracket; 9, lens seat through pipe; a, optical path transmission axis. Specific embodiments

[0027] For better understanding and implementation, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model.

[0028] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present utility model belongs. The terms used in the description of the present utility model in this specification are only for the purpose of describing specific embodiments and are not intended to limit the present utility model.

[0030] Please refer to Figures 1 to 7 , a laser processing head, including a focusing lens holder 2. An assembly hole 23 is arranged on the focusing lens holder 2 along the laser transmission path. A focusing lens assembly 25 is arranged in the assembly hole 23. One side of the focusing lens holder 2 facing the focal point direction of the laser processing head is configured with a diversion groove. The diversion groove is located on the periphery of the assembly hole 23. A dust extraction pipe 3 is arranged on the focusing lens holder 2. One end of the dust extraction pipe 3 is communicated with the diversion groove, and the other end of the dust extraction pipe 3 is connected with a negative pressure generator. As Figure 1 and Figure 2 shown, during the processing of the laser processing head, the negative pressure generator generates negative pressure in the diversion groove through the dust extraction pipe 3. The dust generated during the processing enters the diversion groove along the direction away from the workpiece, that is, along the reverse direction of the laser transmission path, and then is discharged through the dust extraction pipe 3, realizing the dust removal work at the processing position of the laser processing head. Compared with the structure of the traditional sheet metal cover, the diversion groove here is integrally arranged on the focusing lens holder 2, which can reduce the weight of the focusing lens holder 2. At the same time, it eliminates the factor that the traditional sheet metal cover generates vibration during negative pressure dust removal, affecting the processing quality of the laser processing head. The structure is compact, ensuring the processing quality of the laser processing head while ensuring the dust removal effect. Preferably, the negative pressure generator is a dust collector.

[0031] It should be noted that, as Figure 1 shown, the optical path transmission axis a represents the laser transmission path, and the focal point of the laser processing head is on the downstream side of the laser transmission path. The processing position, that is, the position where the workpiece is located, is on the same side as the focal point of the processing head.

[0032] In this embodiment, as Figure 1 and Figure 6As shown, the laser processing head further includes a focusing lens cover 1. The focusing lens cover 1 includes a first body 11. On one side of the first body 11 facing the focal point direction of the laser processing head, an assembly groove 12 is arranged. A guiding groove 13 is formed on the side wall of the assembly groove 12. The focusing lens base 2 includes a second body 21. A guiding protrusion 22 that cooperates with the guiding groove 13 is arranged on the second body 21. A diversion groove and an assembly hole 23 are both arranged on the second body 21. The guiding protrusion 22 can be embedded into the guiding groove 13. A light-transmitting hole 15 is arranged on the first body 11. When the focusing lens base 2 and the focusing lens cover 1 are assembled, the light-transmitting hole 15 and the assembly hole 23 are coaxial. Here, the assembly of the focusing lens base 2 and the focusing lens cover 1 is realized in a plug-and-play structure, which can greatly improve the disassembly and assembly efficiency of the focusing lens base 2, facilitate the replacement of the focusing lens assembly 25, and at the same time, cooperate with the focusing lens cover 1 to seal the focusing lens base 2, preventing the dust generated during processing from escaping into the assembly hole 23 and affecting laser transmission.

[0033] In some embodiments, the diversion groove includes a sub-groove 211 extending in a first direction and a main groove 212 extending in a second direction. The sub-groove 211 communicates with the main groove 212. The first direction is perpendicular to the second direction. The dust extraction pipe 3 communicates with the main groove 212 or the sub-groove 211.

[0034] In this embodiment, the dust extraction pipe 3 communicates with the main groove 212. In the opposite direction of the laser transmission path, the depth of the main groove 212 is greater than that of the sub-groove 211. With such a setting, the volume of the main groove 212 can be increased, so that more dust accumulates in the main groove 212 and is buffered, facilitating its smooth entry into the dust extraction pipe 3 after passing through the main groove 212.

[0035] Specifically, as Figures 5 to 7 shown, an extension groove 14 is arranged at the bottom of the assembly groove 12. A buffer hole 2121 is formed through the bottom of the main groove 212. The main groove 212 communicates with the extension groove 14 through the buffer hole 2121. By arranging the extension groove 14 at the bottom of the focusing lens cover 1, that is, at the bottom of the assembly groove 12, and cooperating with the buffer hole 2121 to increase the depth of the main groove 212, the volume of the main groove 212 is increased, effectively reducing the thickness of the assembly structure of the focusing lens base 2 and the focusing lens cover 1, and realizing the overall weight reduction of the laser processing head.

[0036] As Figure 6 and Figure 7 shown, a limiting plate 24 is arranged on the second body 21. The guiding protrusion 22 extends to the limiting plate 24. After the focusing lens base 2 and the focusing lens cover 1 are assembled, the limiting plate 24 fits against the end face of the focusing lens cover 1 to block the extension groove 14, and at the same time means that the focusing lens base 2 and the focusing lens cover 1 are assembled in place.

[0037] Further, a dust extraction hole 241 is formed through the limit plate 24, and the dust extraction hole 241 communicates with the main groove 212 and / or the buffer hole 2121 and / or the extension groove 14; a dust extraction pipe 3 is installed in the dust extraction hole 241.

[0038] As Figure 5 and Figure 7 shown, the assembly hole 23 includes an assembly section 231 and a light-transmitting section 232 that communicate with each other, and the focusing lens assembly 25 is installed in the assembly section 231.

[0039] As Figures 1 to 3 shown, the laser processing head further includes a bracket 4 and a connecting plate 5. The bracket 4 and the connecting plate 5 are connected by an XY-axis manual displacement table 6, and the focusing lens cover 1 is installed on the XY-axis manual displacement table 6. With such a setting, it is convenient to adjust the position of the assembly structure of the focusing lens cover 1 and the focusing lens seat 2 in space, which is beneficial to improving the flexibility and precision of processing.

[0040] As Figures 1 to 6 shown, an extension bracket 8 is provided on the focusing lens cover 1, and a DOE lens assembly 7 is assembled on the extension bracket 8. The DOE lens assembly 7 communicates with the light-transmitting hole 15 through a lens seat through pipe 9.

[0041] In this embodiment, a laser processing device is further provided, including the aforementioned laser processing head. Due to the advantages of the laser processing head, the laser processing device can effectively remove dust and ensure the processing quality.

[0042] The technical means disclosed in the solution of the present invention are not limited to the technical means disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements are also regarded as the protection scope of the present invention.

Claims

1. A laser processing head, characterized in that, It includes a focusing lens base, on which an assembly hole is arranged along the laser transmission path, and a focusing lens assembly is arranged in the assembly hole; One side of the focusing lens base facing the focal point direction of the laser processing head is provided with a diversion groove, the diversion groove is located on the periphery of the assembly hole, a dust extraction pipe is arranged on the focusing lens base, one end of the dust extraction pipe is communicated with the diversion groove, and the other end of the dust extraction pipe is connected with a negative pressure generator.

2. The laser processing head according to claim 1, wherein, The laser processing head further includes a focusing lens cover, the focusing lens cover includes a first body, and one side of the first body facing the focal point direction of the laser processing head is provided with an assembly groove, and a guiding groove is formed on the side wall of the assembly groove; The focusing lens base includes a second body, on which a guiding protrusion matching with the guiding groove is arranged, the diversion groove and the assembly hole are both arranged on the second body, and the guiding protrusion can be embedded into the guiding groove; The first body is provided with a light-transmitting hole, and when the focusing lens base and the focusing lens cover are assembled, the light-transmitting hole is coaxial with the assembly hole.

3. The laser processing head according to claim 2, characterized in that, The diversion groove includes a sub-groove extending in a first direction and a main groove extending in a second direction, the sub-groove is communicated with the main groove, and the first direction is perpendicular to the second direction; The dust extraction pipe is communicated with the main groove or the sub-groove.

4. The laser processing head according to claim 2, characterized in that, The diversion groove includes a sub-groove extending in a first direction and a main groove extending in a second direction, the sub-groove is communicated with the main groove, and the first direction is perpendicular to the second direction; The dust extraction pipe is communicated with the main groove; In the reverse direction of the laser transmission path, the depth of the main groove is greater than the depth of the sub-groove.

5. The laser processing head according to claim 4, characterized in that, An extension groove is arranged at the bottom of the assembly groove, a buffer hole is arranged through the bottom of the main groove, and the main groove is communicated with the extension groove through the buffer hole.

6. The laser processing head according to claim 2, wherein A limiting plate is arranged on the second body, and the guiding protrusion extends to the limiting plate.

7. The laser processing head according to claim 6, characterized in that, A dust extraction hole is arranged through the limiting plate, and the dust extraction hole is communicated with the diversion groove; The dust extraction pipe is installed in the dust extraction hole.

8. The laser processing head according to claim 2, characterized in that, The laser processing head further includes a bracket and a connecting plate, the bracket and the connecting plate are connected by an XY-axis manual displacement table, and the focusing lens cover is installed on the XY-axis manual displacement table.

9. The laser processing head according to claim 2, wherein, An extension frame is arranged on the focusing lens cover, a DOE lens assembly is assembled on the extension frame, and the DOE lens assembly is communicated with the light-transmitting hole through a lens base through pipe.

10. A laser processing device, characterized in that, It includes the laser processing head according to any one of claims 1-9.

Images