A composite laser cleaning head based on external light path beam combining

Abstract

The present invention discloses a composite laser cleaning head based on external optical path beam combining, wherein a continuous laser galvanometer group and a pulse laser galvanometer group are installed in the shell head, an upper cover is screwed to the top of the shell head, a sealing ring is arranged at the connection between the upper cover and the shell head, two holes are arranged at the bottom of the shell head, an adjustment block is respectively connected to the two holes at the bottom of the shell head, an O-ring is respectively inserted in the adjustment block, a continuous laser field mirror and a pulse laser field mirror are respectively installed in the O-ring, a continuous laser head assembly and a pulse laser head assembly, the continuous laser head assembly and the pulse laser head assembly are located at both sides of one end of the shell head, a shell is sleeved outside the continuous laser head assembly and the pulse laser head assembly, a bellows is arranged at the end of the shell, and a connector is arranged at the connection between the shell and the bellows. The integrated design has low cost and small size, can adapt to more cleaning scenes, has a simple structure, and is easy to disassemble, maintain and repair.

Description

Technical Field

[0001] The present invention relates to the field of laser cleaning technology, and more specifically to a composite laser cleaning head based on external light path beam combining, which is suitable for automobile mold cleaning, rail transportation rust and paint removal, aerospace ship rust and paint removal, military equipment rust and paint removal, etc. Background Art

[0002] Laser cleaning technology is a new type of environmentally friendly cleaning technology and is widely used in aviation, aerospace, shipbuilding, petroleum, chemical industry, electronic manufacturing and other fields. At present, lasers are divided into pulsed lasers and continuous lasers according to the control mode. If a single type of laser is used for cleaning, there will be certain defects in cleaning efficiency and cleaning effect. For example, if a single pulsed laser is used for cleaning, the energy density generated is low due to the limitation of its own performance, resulting in low cleaning efficiency and incomplete cleaning, especially for high-temperature resistant materials, the cleaning effect is very poor. If a single continuous laser is used for cleaning, the energy generated by the laser exceeds the threshold of substrate ablation while cleaning the dirt layer or rust layer, which will damage the substrate itself and fail to achieve a good cleaning effect.

[0003] Therefore, after comprehensive consideration, it is necessary to design a composite laser cleaning technology based on external optical path combining. The angle of the continuous laser and the galvanometer in the pulsed laser galvanometer group is controlled by software to determine the overlapping position of the scannable surface of the continuous laser beam and the scannable surface of the pulsed laser beam. The angle of the galvanometer in the pulsed laser galvanometer group is adjusted by software to make the cleaning surfaces of the pulsed laser and the continuous laser within the overlapping position. The cleaning paths and speeds of the pulsed laser and the continuous laser are made consistent through software settings, so that the spot positions of the continuous laser beam and the pulsed laser beam overlap and act on the surface of the material to be cleaned at the same time. The appropriate cleaning parameters are adjusted according to the properties of the surface of the material to be cleaned. The continuous laser provides preset energy for the pulsed laser cleaning, and the pulsed laser performs fine cleaning on the surface of the dirt layer and the rust layer, thereby improving the cleaning efficiency and cleaning effect and being adaptable to the cleaning of a variety of materials. For this reason, we propose a composite laser cleaning head based on external optical path combining. Summary of the invention

[0004] In order to overcome the shortcomings of the prior art, the purpose of the present invention is to provide a composite laser cleaning head based on external optical path combining, which has higher cleaning efficiency, especially for the cleaning of precision components and high-temperature resistant materials, and can prevent substrate damage. The pulsed laser cleaning machine and the continuous laser cleaning machine are used separately to clean materials with thin and thick dirt layers but low precision requirements. It has an integrated design, low cost, small size, can adapt to more cleaning scenarios, and has a simple structure, which is easy to disassemble, maintain and repair.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] A composite laser cleaning head based on external light path beam combining, the composite laser cleaning head comprises a shell head, a continuous laser galvanometer group and a pulse laser galvanometer group are installed in the shell head, and an upper cover is screwed to the top of the shell head, a sealing ring is arranged at the connection between the upper cover and the shell head, and two holes are arranged at the bottom of the shell head;

[0007] A first adjustment block and a second adjustment block, wherein the first adjustment block and the second adjustment block are respectively connected to two holes at the bottom end of the housing head, and a first O-ring and a second O-ring are respectively inserted into the first adjustment block and the second adjustment block, and the first O-ring and the second O-ring are respectively correspondingly installed with a continuous laser field mirror and a pulse laser field mirror;

[0008] A continuous laser head assembly and a pulse laser head assembly, wherein the continuous laser head assembly and the pulse laser head assembly are located at both sides of one end of the shell head, a shell is provided on the outside of the continuous laser head assembly and the pulse laser head assembly, a bellows is provided at the end of the shell, and a connector is provided at the connection between the shell and the bellows.

[0009] Preferably, the continuous laser galvanometer group includes a first galvanometer, a second galvanometer, and a continuous laser galvanometer fixing seat, and the first galvanometer and the second galvanometer are fixedly installed in the X-axial and Y-axial holes of the continuous laser galvanometer fixing seat respectively.

[0010] Preferably, the pulse laser galvanometer group includes a third galvanometer, a fourth galvanometer, and a pulse laser galvanometer fixing seat, and the third galvanometer and the fourth galvanometer are respectively fixedly installed in the X-axial and Y-axial holes of the pulse laser galvanometer fixing seat.

[0011] The continuous laser galvanometer fixing seat and the pulsed laser galvanometer fixing seat are connected together and fixed in the housing head.

[0012] Preferably, the continuous laser head assembly includes a QBH continuous laser head, a collimating lens, and a first fixing seat. The front end of the QBH continuous laser head is equipped with a collimating lens, the front end of the collimating lens is equipped with a first fixing seat, and the first fixing seat is connected to the continuous light incident port of the shell head.

[0013] Preferably, the pulse laser head assembly comprises a QCS pulse laser head and a second fixing seat, the front end of the QCS pulse laser head is equipped with a second fixing seat, and the second fixing seat is connected to the pulse light incident port of the housing head.

[0014] Preferably, a second handle is connected to the middle of the top of the upper cover, and laser optical fiber, electric wires and cold water pipes are arranged in the corrugated tube, a light source hole is provided on the head of the outer shell, the continuous laser head assembly and the pulse laser head assembly are connected to the light source hole, and a first handle is connected to the top of the outer shell.

[0015] Preferably, the surfaces of the first handle and the second handle are both sleeved with protective covers, and the surfaces of the protective covers are provided with convex points at equal distances.

[0016] Preferably, the bellows has a cylindrical structure, and a waterproof ring is provided at the end of the bellows.

[0017] Preferably, the second handle and the first handle are both in an arc-shaped structure, and the upper cover and the second handle, and the outer shell and the first handle are all fixedly connected by bolts.

[0018] Preferably, an anti-collision layer is provided on the surface of the shell, and an anodized film is provided on the surface of the anti-collision layer.

[0019] Compared with the prior art, the present invention can achieve the following beneficial effects:

[0020] The composite cleaning technology of the present invention controls the angle of the continuous laser and the galvanometer in the pulsed laser galvanometer group through software, determines the overlapping position of the scannable surface of the continuous laser beam and the scannable surface of the pulsed laser beam, and adjusts the angle of the galvanometer in the pulsed laser and the continuous laser galvanometer group through software so that the cleaning surfaces of the pulsed laser and the continuous laser are within the overlapping position range, and through software settings, the cleaning paths, paths, and speeds of the pulsed laser and the continuous laser are made consistent, so that the spot positions of the continuous laser beam and the pulsed laser beam overlap, thereby acting on the material to be cleaned at the same time. Material surface, adjust appropriate cleaning parameters according to the properties of the surface of the material to be cleaned, continuous laser provides preset energy for pulse laser cleaning, pulse laser performs fine cleaning of the surface of the dirt layer and rust layer, with higher cleaning efficiency and effect, especially for the cleaning of precision parts and high-temperature resistant materials, it has the advantage of preventing damage to the substrate, and at the same time, pulse laser cleaning machine and continuous laser cleaning machine can also be used separately to clean materials with thin and thick dirt layers but low precision requirements, integrated design, low cost, small size, can adapt to more cleaning scenarios, and simple structure, easy to disassemble, maintain and repair. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of a composite laser cleaning head based on external light path beam combining;

[0022] Figure 2 It is a schematic diagram of the structure of a continuous laser galvanometer group and a pulse laser head assembly of a composite laser cleaning head based on external light path beam combining;

[0023] Figure 3 This is a schematic diagram of laser beam combining cleaning principle of a composite laser cleaning head based on external light path beam combining;

[0024] Figure 4 It is a basic schematic diagram of a continuous laser head assembly;

[0025] Figure 5 A basic schematic diagram of a pulsed laser head assembly.

[0026] Among them: 1-housing, 2-first handle, 3-continuous laser head assembly, 4-second handle, 5-upper cover, 6-continuous laser galvanometer group, 7-sealing ring, 8-housing head, 9-first adjustment block, 10-first O-ring, 11-continuous laser field mirror, 12-pulse laser field mirror, 13-second O-ring, 14-second adjustment block (purchased on the market), 15-pulse laser galvanometer group, 16-pulse laser head assembly, 17-connecting part, 18-bellows, 301-QBH continuous laser head, 302-collimating mirror, 303-first fixing seat, 601-first galvanometer, 602-second galvanometer, 603-continuous laser galvanometer fixing seat, 1501-third galvanometer, 1502-fourth galvanometer, 150-pulse laser galvanometer fixing seat, 1601-QCS pulse laser head, 1602-second fixing seat. DETAILED DESCRIPTION

[0027] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific embodiments, but the following embodiments are only preferred embodiments of the present invention, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work all belong to the protection scope of the present invention. The experimental methods in the following embodiments, unless otherwise specified, are conventional methods, and the materials, reagents, etc. used in the following embodiments, unless otherwise specified, can all be obtained from commercial channels.

[0028] Embodiment 1:

[0029] like Figure 1-3As shown, a composite laser cleaning head based on external light path beam combining, the composite laser cleaning head comprises: a shell head 8, a continuous laser galvanometer group 6 and a pulse laser galvanometer group 15 are installed in the shell head 8, and the top of the shell head 8 is screwed with an upper cover 5, a sealing ring 7 is arranged at the connection between the upper cover 5 and the shell head 8, and two holes are arranged at the bottom of the shell head 8; a first adjustment block 9 and a second adjustment block 14, the first adjustment block 9 and the second adjustment block 14 are respectively connected to the two holes at the bottom of the shell head 8, and the first adjustment block 9 and the second adjustment block 14 are respectively inserted with a first O-ring 10 and a second O-ring 13, and the first O-ring 10 and the second O-ring 13 are respectively installed with connecting rings Continuous laser field mirror 11 and pulse laser field mirror 12; continuous laser head assembly 3 and pulse laser head assembly 16, the continuous laser head assembly 3 and pulse laser head assembly 16 are located on both sides of one end of the shell head 8, the outer side of the continuous laser head assembly 3 and the pulse laser head assembly 16 is provided with a shell 1, the end of the shell 1 is provided with a bellows 18, and the connection between the shell 1 and the bellows 18 is provided with a connector 17; a second handle 4 is connected to the middle position of the top of the upper cover 5, and the bellows 18 is provided with laser optical fiber, electric wire, and cold water pipe, a light source hole is provided on the shell head 8, the continuous laser head assembly 3 and the pulse laser head assembly 16 are connected to the light source hole, and the top of the shell 1 is connected to the first handle 2.

[0030] The continuous laser head assembly 3 includes a QBH continuous laser head 301, a collimator 302, and a first fixing seat 303. The front end of the QBH continuous laser head 301 is equipped with a collimator 302, which is used to adjust the divergent light emitted by the QBH continuous laser head 301 into parallel light. The front end of the collimator 302 is equipped with a first fixing seat 303, which is connected to the continuous light incident port of the housing head 8, so that the laser continuous light is injected into the cavity of the continuous laser galvanometer group 6.

[0031] The continuous laser galvanometer group 6 includes a first galvanometer 601, a second galvanometer 602, and a continuous laser galvanometer fixing seat 603. The first galvanometer 601 and the second galvanometer 602 are fixedly installed in the X-axis and Y-axis holes of the continuous laser galvanometer fixing seat 603, respectively, so that the incident continuous laser is reflected by the first galvanometer 601 and the second galvanometer 602 and hits the surface of the material to be cleaned. The continuous laser galvanometer fixing seat 603 is connected to the pulse laser galvanometer fixing seat 1503 in the pulse laser galvanometer group 15 and fixed in the housing head 8.

[0032] The pulse laser galvanometer group 15 includes a third galvanometer 1501, a fourth galvanometer 1502, and a pulse laser galvanometer fixing seat 1503. The third galvanometer 1501 and the fourth galvanometer 1502 are respectively fixedly installed in the X-axis and Y-axis holes of the pulse laser galvanometer fixing seat 1503, so that the incident pulse laser is reflected by the third galvanometer 1501 and the fourth galvanometer 1502 and then hits the surface of the material to be cleaned.

[0033] The pulse laser head assembly 16 includes a QCS pulse laser head 1601 and a second fixed seat 1602. The second fixed seat 1602 is installed at the front end of the QCS pulse laser head 1601. The second fixed seat 1602 is connected to the pulse light incident port of the shell head 8, so that the laser pulse light is injected into the cavity of the pulse laser galvanometer group 15.

[0034] The present invention is controlled by software (registration number is 2021SR1099725 computer software copyright), and can achieve cleaning of different paths (such as various shapes such as circle, square, triangle, etc.) in the scannable overlapping area, with very good results.

[0035] In order to ensure the dust-proof effect of the laser head and increase the service life of the galvanometer, each installation joint is sealed with a sealing ring, and the angle of the galvanometer in the continuous laser and pulsed laser galvanometer group is controlled by software during cleaning, and the scannable surface of the continuous laser beam A is determined to be A1+C, and the scannable surface of the pulsed laser beam B is determined to be B1+C. The angle of the galvanometer in the pulsed laser and continuous laser galvanometer group is adjusted by software to make the cleaning surface of the pulsed laser and the continuous laser within the range of C, and the cleaning path and speed of the pulsed laser and the continuous laser are made consistent through software settings, so that the spot positions of the continuous laser beam A and the pulsed laser beam B overlap and act on the surface to be cleaned at the same time. The surface of the material is cleaned, and then the appropriate cleaning parameters are adjusted according to the properties of the surface of the material to be cleaned. The continuous laser provides preset energy for the pulsed laser cleaning, and the pulsed laser performs fine cleaning on the surface of the dirt layer and the rust layer; the composite cleaning technology of the present invention allows the pulsed laser and the continuous laser to play a role at the same time, and has higher cleaning efficiency and effect, especially for the cleaning of precision parts and high-temperature resistant materials, it has the advantage of preventing damage to the substrate. At the same time, the pulsed laser cleaning machine and the continuous laser cleaning machine can also be used separately to clean materials with thin and thick dirt layers but low precision requirements. The integrated design has low cost and small size, can adapt to more cleaning scenarios, and has a simple structure, which is easy to disassemble, maintain and repair.

[0036] In other embodiments, the present embodiment discloses, please Figure 1As shown, the surfaces of the first handle 2 and the second handle 4 are both sleeved with protective covers, and raised points are arranged at equal distances on the surfaces of the protective covers; by arranging protective covers on the surfaces of the first handle 2 and the second handle 4, it is possible to prevent them from being damaged and affecting their use, and arranging raised points at equal distances on the surfaces of the protective covers can increase friction and make them more stable when held in hand.

[0037] In other embodiments, the present embodiment discloses, please Figure 1 As shown, the bellows 18 is a cylindrical structure, and a waterproof ring is provided at the end of the bellows 18; by providing a waterproof ring at the end of the bellows 18, water can be prevented from entering from the end of the bellows 18.

[0038] In other embodiments, the present embodiment discloses, please Figure 1 As shown, the second handle 4 and the first handle 2 are both arc-shaped structures, and the upper cover 5 and the second handle 4, and the outer shell 1 and the first handle 2 are all bolt-fixedly connected; by arranging the first handle 2 and the second handle 4 to be bolt-fixedly connected, it is more stable and firm.

[0039] In other embodiments, the present embodiment discloses, please Figure 1 As shown, an anti-collision layer is provided on the surface of the shell 1, and an anodized film is provided on the surface of the anti-collision layer; by providing an anti-collision layer on the surface of the shell 1, it can be prevented from being damaged and deformed by impact, and a layer of anodized film is provided on its surface to make it more beautiful.

[0040] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge scope of technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A composite laser cleaning head based on external light path beam combining, characterized in that: The composite laser cleaning head comprises a shell head (8), a continuous laser galvanometer group (6) and a pulse laser galvanometer group (15) are installed in the shell head (8), the top of the shell head (8) is screwed to the upper cover (5), a sealing ring (7) is arranged at the connection between the upper cover (5) and the shell head (8), and two holes are arranged at the bottom of the shell head (8); a first adjustment block (9) and a second adjustment block (14), the first adjustment block (9) and the second adjustment block (14) are respectively connected to the two holes at the bottom of the shell head (8) The first adjusting block (9) and the second adjusting block (14) are connected with each other through holes, the first O-ring (10) and the second O-ring (13) are respectively inserted into the first adjusting block (9) and the second O-ring (14), and the first O-ring (10) and the second O-ring (13) are respectively installed with a continuous laser field mirror (11) and a pulse laser field mirror (12); the continuous laser head assembly (3) and the pulse laser head assembly (16), the continuous laser head assembly (3) and the pulse laser head assembly (16) are located on both sides of one end of the housing head (8), and the continuous laser head assembly (3) A shell (1) is provided on the outer side of the pulse laser head assembly (16), a bellows (18) is provided at the end of the shell (1), and a connecting piece (17) is provided at the connection between the shell (1) and the bellows (18); the continuous laser galvanometer group (6) includes a first galvanometer (601), a second galvanometer (602), and a continuous laser galvanometer fixing seat (603), the first galvanometer (601) and the second galvanometer (602) are respectively fixedly installed in the X-axis and Y-axis holes of the continuous laser galvanometer fixing seat (603) The continuous laser galvanometer fixing seat (603) is connected to the pulsed laser galvanometer fixing seat (1503) in the pulsed laser galvanometer group (15) and fixed in the housing head (8); the pulsed laser galvanometer group (15) comprises a third galvanometer (1501), a fourth galvanometer (1502), and a pulsed laser galvanometer fixing seat (1503); the third galvanometer (1501) and the fourth galvanometer (1502) are respectively fixedly mounted in the X-axis and Y-axis holes of the pulsed laser galvanometer fixing seat (1503); The cleaning paths and speeds of the pulsed laser and the continuous laser can be made consistent through software settings; the pulsed laser cleaning machine and the continuous laser cleaning machine can also be used separately; during cleaning, the angles of the pulsed laser galvanometer group (15) and the galvanometers in the continuous laser galvanometer group (6) are controlled through software to determine that the scannable surface of the continuous laser beam A is A1+C, and the scannable surface of the pulsed laser beam B is B1+C, so that the angles of the galvanometers in the pulsed laser galvanometer group (15) and the continuous laser galvanometer group (6) are adjusted through software to make the cleaning surfaces of the pulsed laser and the continuous laser within the range of C, and the cleaning paths and speeds of the pulsed laser and the continuous laser are made consistent through software settings, so that the positions of the light spots produced by the continuous laser beam A and the pulsed laser beam B overlap.

2. According to claim 1, a composite laser cleaning head based on external light path beam combining is characterized in that: A second handle (4) is connected to the middle of the top of the upper cover (5); laser optical fiber and electric wires are arranged in the corrugated tube (18); a light source hole is arranged on the head of the shell (8); the continuous laser head assembly (3) and the pulse laser head assembly (16) are connected to the light source hole; and a first handle (2) is connected to the top of the shell (1).

3. The composite laser cleaning head based on external light path combining according to claim 2 is characterized in that: The surfaces of the first handle (2) and the second handle (4) are both sleeved with protective covers, and the surfaces of the protective covers are provided with convex points at equal distances.

4. The composite laser cleaning head based on external light path combining according to claim 1 is characterized in that: The bellows (18) is in a cylindrical structure, and a waterproof ring is provided at the end of the bellows (18).

5. The composite laser cleaning head based on external light path combining according to claim 2 is characterized in that: The second handle (4) and the first handle (2) are both arc-shaped structures, and the upper cover (5) and the second handle (4), and the outer shell (1) and the first handle (2) are all fixedly connected by bolts.

6. The composite laser cleaning head based on external light path combining according to claim 1, characterized in that: The surface of the shell (1) is provided with an anti-collision layer, and the surface of the anti-collision layer is provided with an anodized film.

7. The composite laser cleaning head based on external light path combining according to claim 1, characterized in that: The continuous laser head assembly (3) comprises a QBH continuous laser head (301), a collimating lens (302), and a first fixing seat (303); the front end of the QBH continuous laser head (301) is equipped with a collimating lens (302); the front end of the collimating lens (302) is equipped with a first fixing seat (303); the first fixing seat (303) is connected to the continuous light incident port of the housing head (8).

8. The composite laser cleaning head based on external light path combining according to claim 1 is characterized in that: The pulse laser head assembly (16) comprises a QCS pulse laser head (1601) and a second fixing seat (1602). The second fixing seat (1602) is installed at the front end of the QCS pulse laser head (1601), and the second fixing seat (1602) is connected to the pulse light incident port of the housing head (8).

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