Laser processing head for removing surface attachments

Abstract

The utility model provides a laser processing head for removing surface attachments, which comprises a shell, a galvanometer mechanism, a support and a nozzle piece, and is characterized in that the interior of the shell is vacuum, and the shell is provided with an incident port and an emergent port; the galvanometer mechanism is arranged in the shell and is used for reflecting the laser emitted from the incident port to the emergent port to be emitted outwards; the support is arranged on one side of the shell, a first channel is formed in the shell, a second channel is formed in the support, and the second channel is communicated with the first channel; the nozzle piece is arranged on the support, an air outlet is formed in the nozzle piece, and the second channel is communicated with the air outlet; when the laser processing head is used, gas is blown out from the gas outlet through the first channel and the second channel, so that a gas curtain is formed on the exit port side, pollutants generated when a workpiece located on the exit port side is cleaned can be blocked by the gas curtain, the pollutants are prevented from polluting an optical device on the exit port side, and normal use of the laser processing head for removing the surface attachments is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of laser cleaning, in particular to a laser processing head for removing surface attachments. Background Art

[0002] Laser cleaning mainly utilizes the high energy density and high monochromaticity of the laser beam to absorb the laser energy irradiated on the surface of the object and convert it into heat energy, thereby causing the contaminants to expand, evaporate or peel off due to the heat. Under low laser flux, the material is heated by the absorbed laser energy and evaporates or sublimates; under high laser flux, the material is usually converted into plasma. In addition, the laser is a non-contact cleaning of the workpiece, which is very safe for cleaning precision workpieces or their fine parts, and its accuracy can be ensured.

[0003] A laser processing head for removing surface attachments, with publication number CN209849455U, comprises: a plurality of laser generators, a reflector group having a rotation axis, the reflector group comprising a plurality of reflective surfaces arranged around the rotation axis; the plurality of reflective surfaces correspond to the plurality of laser generators, each laser generator is used to emit light to the corresponding reflective surface; and each light ray can be reflected by the corresponding reflective surface; a driving device, the driving device is transmission-connected to the reflector group, the driving device is used to drive the reflector group to rotate around the rotation axis, so that each reflective surface can rotate relative to the corresponding laser generator; and the light reflected by the plurality of reflective surfaces can form a roughly annular light spot.

[0004] The above-mentioned existing laser processing head for removing surface attachments is not provided with a corresponding lens protection mechanism during the process of cleaning the workpiece, which causes the pollutants generated by cleaning to easily adhere to the lens surface, causing the laser processing head for removing surface attachments to be unable to be used normally. Utility Model Content

[0005] In view of this, the utility model proposes a laser processing head for removing surface attachments, which can form an air curtain on the exit side of the laser processing head for removing surface attachments, so that pollutants generated when cleaning the workpiece on the exit side can be blocked by the air curtain, so as to avoid the pollutants from contaminating the optical devices on the exit side, thereby ensuring the normal use of the laser processing head for removing surface attachments.

[0006] The technical solution of the utility model is implemented as follows: The utility model provides a laser processing head for removing surface attachments, including a shell, a galvanometer mechanism, a bracket and a nozzle member, wherein:

[0007] The shell is vacuum inside and is provided with an inlet and an outlet;

[0008] The galvanometer mechanism is arranged in the housing and is used to reflect the laser light incident from the incident port to the exit port for outward emission;

[0009] The bracket is arranged on one side of the shell, a first channel is arranged in the shell, a second channel is arranged in the bracket, and the second channel is connected to the first channel;

[0010] The nozzle piece is arranged on the bracket, and an air outlet is arranged on the nozzle piece, and the second channel is connected with the air outlet;

[0011] The gas is blown out from the gas outlet through the first channel and the second channel, so that a gas curtain is formed on the side of the outlet.

[0012] On the basis of the above technical solution, preferably, the incident port is communicated with the interior of the shell and is arranged perpendicular to the incident port.

[0013] On the basis of the above technical solution, preferably, the galvanometer mechanism includes two reflection components, wherein:

[0014] The housing is provided with two mounting openings, one of which is arranged opposite to the position of the incident port; the other mounting opening is arranged opposite to the position of the incident port;

[0015] The two reflective components are respectively arranged in the corresponding installation openings, and the reflective components have a reflective part that can rotate circumferentially. External laser enters the shell from the incident port, and is reflected by the reflective part to the exit port and emitted outward.

[0016] On the basis of the above technical solution, preferably, the two reflection components each include a driving member, a reflection mirror and a cover, wherein:

[0017] The driving member is fixed in the corresponding installation opening, and the output end of the driving member passes through the corresponding installation opening and extends into the housing;

[0018] The reflector is fixed on the output end of the driving member, and the position of the reflector is arranged corresponding to the positions of the incident port and the exit port;

[0019] The cover is fixed on the housing, corresponds to the position of the mounting opening, and is located outside the driving member;

[0020] The driving part drives the reflector to rotate and adjust the angle of laser reflection.

[0021] On the basis of the above technical solution, preferably, it further comprises a light output protection component, wherein the light output protection component is arranged in the emission port, and the light output protection component is used to protect the galvanometer mechanism in the shell.

[0022] On the basis of the above technical solution, preferably, the light output protection assembly includes a lens barrel, a protective lens, a sealing ring and a pressure ring, wherein:

[0023] The lens barrel is threadedly connected to the inner side of the exit port;

[0024] The protective lens is arranged in the lens barrel;

[0025] The sealing ring is arranged on a side of the protective lens away from the housing, and the outer side wall of the sealing ring abuts against the inner side wall of the lens barrel;

[0026] The pressing ring is clamped at a port on one side of the lens barrel away from the housing, and a side of the pressing ring close to the housing abuts against a surface of the sealing ring.

[0027] On the basis of the above technical solution, preferably, the bracket is arranged perpendicularly to the emission port, and the nozzle member is arranged on a side of the light emission protection component away from the housing.

[0028] On the basis of the above technical solution, preferably, the nozzle member comprises a box body and a cover body, wherein:

[0029] The box body is fixed to a side of the bracket close to the light output protection component by bolts, and a circular hole is opened in the middle of the box body, and the circular hole is connected to the second channel;

[0030] The cover body is fixed to a side of the box body away from the bracket by bolts;

[0031] The air outlet is arranged on a side of the box body away from the light-emitting protection component and is communicated with the circular hole.

[0032] On the basis of the above technical solution, preferably, it further includes a connecting pipe head, one end of which penetrates and extends into the first channel, and the other end of which is connected to the gas supply end of the external gas supply equipment.

[0033] On the basis of the above technical solution, preferably, the driving member is an electric motor.

[0034] The laser processing head for removing surface attachments of the utility model has the following beneficial effects compared with the prior art:

[0035] (1) The gas is blown out from the gas outlet through the first channel and the second channel, so that an air curtain is formed on the outlet side, so that pollutants generated when the workpiece on the outlet side is cleaned can be blocked by the air curtain, so as to prevent the pollutants from contaminating the optical device on the outlet side, thereby ensuring the normal use of the laser processing head for removing surface attachments;

[0036] (2) The reflector is driven to rotate by a driving member, thereby controlling the angle of the reflector, thereby adjusting the reflection direction of the laser, thereby improving the efficiency and accuracy of laser cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0038] Figure 1 A three-dimensional diagram of a laser processing head for removing surface attachments of the utility model;

[0039] Figure 2 It is a rear view of the laser processing head for removing surface attachments of the utility model;

[0040] Figure 3 It is a schematic diagram of the connection structure between the bracket and the nozzle member of the laser processing head for removing surface attachments of the utility model;

[0041] Figure 4 A three-dimensional diagram of a nozzle member of a laser processing head for removing surface attachments of the utility model;

[0042] Figure 5 It is an exploded view of the nozzle part of the laser processing head for removing surface attachments of the utility model;

[0043] Figure 6 A three-dimensional diagram of the internal structure of the shell of the laser processing head for removing surface attachments of the utility model;

[0044] Figure 7 A three-dimensional diagram of a light-emitting protection component of a laser processing head for removing surface attachments of the utility model;

[0045] Figure 8 It is a stereoscopic diagram of the connection structure between the laser processing head and the cover body for removing surface attachments of the utility model. DETAILED DESCRIPTION

[0046] The following will be combined with the implementation of the utility model to clearly and completely describe the technical solutions in the implementation of the utility model. Obviously, the described implementation is only a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0047] like Figure 1-8 As shown, a laser processing head for removing surface attachments of the utility model comprises a housing 1, a galvanometer mechanism 2, a bracket 3 and a nozzle member 4.

[0048] The shell 1 is vacuum inside, and is provided with an inlet 100 and an outlet 110; the galvanometer mechanism 2 is arranged in the shell 1, and is used for reflecting the laser incident from the inlet 100 to the outlet 110 for outward emission; the bracket 3 is arranged on one side of the shell 1, and is provided with a first channel 120 in the shell 1, and is provided with a second channel 300 in the bracket 3, and the second channel 300 is connected with the first channel 120; the nozzle member 4 is arranged on the bracket 3, and is provided with an air outlet 400, and the second channel 300 is connected with the air outlet 400.

[0049] It should be noted that the external laser is incident on the shell 1 through the incident port 100, and the galvanometer mechanism 2 inside the shell 1 can change the incident angle of the laser to make it perpendicular to the incident port 100, and emit it outward from the outlet 110, so as to clean the stains on the workpiece. At the same time, the external gas supply equipment transports gas into the first channel 120, and the gas is blown out from the outlet 400 through the first channel 120 and the second channel 300, so that an air curtain is formed on the outlet side, so that the pollutants generated when the workpiece on the outlet side is cleaned can be blocked by the air curtain, so as to avoid the pollutants from contaminating the optical device on the outlet side, so as to ensure the normal use of the laser processing head for removing surface attachments.

[0050] The incident port 100 in this embodiment is communicated with the interior of the housing 1 and is vertically disposed with respect to the incident port 110 .

[0051] It should be noted that the incident port 100 is connected to the interior of the shell 1 and is arranged vertically with the exit port 110, which ensures that the laser beam can enter vertically from the incident port 100, be reflected by the galvanometer mechanism 2, and finally be emitted from the exit port 110 in a vertical direction, thereby optimizing the transmission path of the laser beam and improving the efficiency and accuracy of laser cleaning.

[0052] The galvanometer mechanism 2 in this embodiment includes two reflection components 21, wherein two mounting ports 130 are opened on the shell 1, wherein one mounting port 130 is arranged relative to the position of the incident port 100; the other mounting port 130 is arranged relative to the position of the outlet port 110; the two reflection components 21 are respectively arranged in the corresponding mounting ports 130, and the reflection components 21 have a circumferentially rotatable reflection part, and the external laser is incident on the shell 1 from the incident port 100, and the laser is reflected to the outlet port 110 by the reflection part and emitted outward.

[0053] It should be noted that after the laser enters from the incident port 100, it is reflected twice by the reflecting parts of the two reflecting components 21, and finally emitted from the exit port 110 in a vertical direction. The reflecting part should be able to rotate circumferentially to adjust the scanning range and angle of the laser beam to improve the efficiency of laser cleaning.

[0054] The two reflection components 21 in this embodiment both include a driving member 211, a reflector 212 and a cover 213, wherein the driving member 211 is fixed in the corresponding mounting port 130, and the output end of the driving member 211 passes through the corresponding mounting port 130 and extends into the shell 1; the reflector 212 is fixed on the output end of the driving member 211, and the position of the reflector 212 is set corresponding to the positions of the incident port 100 and the exit port 110; the cover 213 is fixed on the shell 1, corresponds to the position of the mounting port 120, and is located on the outside of the driving member 211; the driving member 211 drives the reflector 212 to rotate to adjust the angle of laser reflection.

[0055] It should be noted that the driving member 211 is fixed in the mounting port 130, and its output end extends into the shell 1, and is used to drive the rotation of the reflector 212, control the angle of the reflector 212, and thus adjust the reflection direction of the laser, thereby improving the efficiency and accuracy of laser cleaning. The reflector 212 is fixed on the output end of the driving member 211, and its position corresponds to the incident port 100 and the exit port 110. After the laser is incident from the incident port 100, it is first reflected by the first reflector 212, and then reflected by the second reflector 212, and finally emitted from the exit port 110; the cover body 213 is provided to protect the driving member 211 and prevent dust or other impurities from entering.

[0056] Specifically, the driving member 211 in this embodiment is a motor.

[0057] The present embodiment further includes a light-exit protection component 5 , which is disposed in the emission port 110 . The light-exit protection component 5 is used to protect the galvanometer mechanism 2 in the housing 1 .

[0058] In this embodiment, the light output protection component 5 includes a lens barrel 51, a protective mirror 52, a sealing ring 53 and a pressing ring 54, wherein the lens barrel 51 is threadedly connected to the inner side of the emission port 110; the protective mirror 52 is arranged in the lens barrel 51; the sealing ring 53 is arranged on the side of the protective mirror 52 away from the shell 1, and the outer wall of the sealing ring 53 abuts against the inner wall of the lens barrel 51; the pressing ring 54 is clamped at the port on the side of the lens barrel 51 away from the shell 1, and the side of the pressing ring 54 close to the shell 1 abuts against the surface of the sealing ring 53.

[0059] It should be noted that the light-exit protection assembly 5 can effectively protect the galvanometer mechanism 2 from being polluted or damaged from the emission port 110. The lens barrel 51 is connected to the inner side of the emission port 110 by threads to ensure a tight connection with the housing 1 to prevent external pollutants from entering through the gap. The protective mirror 52 is arranged in the lens barrel 51 to directly face the laser reflected from the galvanometer mechanism 2. Its function is to prevent the laser from directly irradiating the dust or other pollutants in the external environment and prevent these pollutants from entering the interior of the housing 1. The sealing ring 53 is arranged on the side of the protective mirror 52 away from the housing 1 and abuts against the inner side wall of the lens barrel 51; it plays a sealing role to prevent pollutants from entering through the gap between the lens barrel 51 and the protective mirror 52. The pressing ring 54 is clamped at the port on the side of the lens barrel 51 away from the housing 1 and abuts against the surface of the sealing ring 53; the pressing ring 54 ensures that a tight seal is formed between the sealing ring 53 and the lens barrel 51 and the protective mirror 52 by applying a certain pressure.

[0060] It is understandable that the protective lens 52 may be damaged or contaminated due to long-term use. The protective lens 52 can be fixed to the lens barrel 51 by means of snap-fit ​​or threaded connection, so that the user can replace it conveniently.

[0061] In this embodiment, the bracket 3 is vertically arranged to the emission port 110 , and the nozzle member 4 is arranged on a side of the light emission protection component 5 away from the housing 1 .

[0062] The nozzle member 4 in this embodiment includes a box body 41 and a cover body 42, wherein the box body 41 is fixed to the side of the bracket 3 close to the light output protection component 5 by bolts, a circular hole 410 is opened in the middle of the box body 41, and the circular hole 410 is connected to the second channel 300; the cover body 42 is fixed to the side of the box body 41 away from the bracket 3 by bolts; the air outlet 400 is opened on the side of the box body 41 away from the light output protection component 5, and is connected to the circular hole 410.

[0063] It should be noted that the end of the air outlet 400 is in a trapezoidal shape, and the gas passing through the air outlet 400 can increase the protection area of ​​the air curtain, thereby improving the protection effect of the lens on the light-emitting side.

[0064] This embodiment further includes a connecting pipe head 6 , one end of which penetrates through and extends into the first channel 120 , and the other end of which is connected to a gas supply end of an external gas supply device.

[0065] Working principle:

[0066] After the laser is incident from the incident port 100, it is first reflected by the first reflector 212, and then reflected by the second reflector 212, and is incident from the incident port 110 into the light output protection assembly 5, and finally passes through the protection mirror 52 and is incident onto the surface of the workpiece for laser cleaning operation. At the same time, an external gas supply device transports gas into the first channel 120, and the gas is blown out from the gas outlet 400 through the first channel 120 and the second channel 300, so that an air curtain is formed on the light output side, so that pollutants generated when the workpiece on the incident port side is cleaned can be blocked by the air curtain.

[0067] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A laser processing head for removing surface deposits, characterized in that: It comprises a housing (1), a galvanometer mechanism (2), a bracket (3) and a nozzle member (4), wherein: The interior of the shell (1) is vacuum, and the shell (1) is provided with an inlet (100) and an outlet (110); The galvanometer mechanism (2) is arranged in the housing (1) and is used to reflect the laser light incident from the incident port (100) to the incident port (110) for outward emission; The bracket (3) is arranged on one side of the shell (1); a first channel (120) is arranged in the shell (1); a second channel (300) is arranged in the bracket (3); and the second channel (300) is connected to the first channel (120); The nozzle member (4) is arranged on the bracket (3), and an air outlet (400) is provided on the nozzle member (4), and the second channel (300) is connected to the air outlet (400); The gas is blown out from the gas outlet (400) through the first channel (120) and the second channel (300), so that a gas curtain is formed on the side of the outlet (110).

2. The laser processing head for removing surface deposits according to claim 1, characterized in that: The incident port (100) is communicated with the interior of the housing (1) and is arranged vertically with the incident port (110).

3. The laser processing head for removing surface deposits as claimed in claim 2, characterized in that: The galvanometer mechanism (2) comprises two reflection components (21), wherein: The housing (1) is provided with two mounting openings (130), one mounting opening (130) being arranged opposite to the incident opening (100); and the other mounting opening (130) being arranged opposite to the incident opening (110); The two reflection components (21) are respectively arranged in corresponding installation openings (130), and the reflection component (21) has a circumferentially rotatable reflection part. External laser light is incident into the housing (1) from the incident opening (100), and is reflected by the reflection part to the emission opening (110) and emitted outwards.

4. The laser processing head for removing surface deposits according to claim 3, characterized in that: The two reflection assemblies (21) each comprise a driving member (211), a reflection mirror (212) and a cover (213), wherein: The driving member (211) is fixed in the corresponding installation opening (130), and the output end of the driving member (211) passes through the corresponding installation opening (130) and extends into the housing (1); The reflector (212) is fixed on the output end of the driving member (211), and the position of the reflector (212) is arranged corresponding to the positions of the incident port (100) and the incident port (110); The cover body (213) is fixed on the housing (1), corresponds to the position of the installation opening (130), and is located outside the driving member (211); The driving member (211) drives the reflector (212) to rotate, thereby adjusting the angle of laser reflection.

5. The laser processing head for removing surface deposits according to claim 1, characterized in that: It also comprises a light-exit protection component (5), which is arranged in the emission port (110) and is used to protect the galvanometer mechanism (2) in the housing (1).

6. The laser processing head for removing surface deposits according to claim 5, characterized in that: The light output protection assembly (5) comprises a lens barrel (51), a protection lens (52), a sealing ring (53) and a pressure ring (54), wherein: The lens barrel (51) is threadedly connected to the inner side of the emission port (110); The protective mirror (52) is arranged in the lens barrel (51); The sealing ring (53) is arranged on a side of the protective mirror (52) away from the housing (1), and the outer wall of the sealing ring (53) abuts against the inner wall of the lens barrel (51); The pressing ring (54) is clamped at a port on one side of the lens barrel (51) away from the housing (1), and the side of the pressing ring (54) close to the housing (1) abuts against the surface of the sealing ring (53).

7. The laser processing head for removing surface deposits according to claim 6, characterized in that: The support (3) and the emission port (110) are arranged vertically, and the nozzle member (4) is arranged on a side of the light emission protection component (5) away from the housing (1).

8. The laser processing head for removing surface deposits according to claim 6, characterized in that: The nozzle member (4) comprises a box body (41) and a cover body (42), wherein: The box body (41) is fixed to a side of the bracket (3) close to the light output protection component (5) by means of bolts, and a circular hole (410) is provided in the middle of the box body (41), and the circular hole (410) is connected to the second channel (300); The cover body (42) is fixed to a side of the box body (41) away from the bracket (3) by means of bolts; The air outlet (400) is disposed on a side of the box body (41) away from the light output protection assembly (5), and is communicated with the circular hole (410).

9. The laser processing head for removing surface deposits according to claim 1, characterized in that: It also comprises a connecting pipe head (6), one end of which penetrates through and extends into the first channel (120), and the other end of which is connected to the gas supply end of an external gas supply device.

10. The laser processing head for removing surface deposits according to claim 4, characterized in that: The driving member (211) is an electric motor.

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