Laser cleaning mechanism and cleaning method

Abstract

The invention discloses a laser cleaning mechanism and a cleaning method.The laser cleaning mechanism comprises a laser assembly, the laser assembly comprises a laser generator used for outputting laser and a light transmitting lens set used for transmitting the laser, the light transmitting lens set comprises a fixed lens set and a rotating lens set, and the rotating lens set can rotate in the axial direction; the advancing assembly is used for driving the laser assembly to move in the radial direction, so that the laser advances in a spiral track; through mutual cooperation of the advancing assembly and the laser assembly, the advancing assembly drives the laser assembly to move in the axial direction, meanwhile, the rotating lens set of the laser assembly rotates in the axial direction, a laser beam moves in a double-spiral track, the problem that the cleaning position is omitted is solved, meanwhile, complete cleaning can be achieved through single-time movement, and the cleaning quality is improved; and aiming at a gun barrel structure, a rifling structure in the gun barrel structure can be adapted, cleaning dead angles are avoided, and the cleaning quality is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of pipeline cleaning, and particularly relates to a laser cleaning mechanism and a cleaning method. Background Art

[0002] Most traditional laser cleaning devices perform a linear motion of continuous scanning. Each time they move and scan to clean a line, multiple scans are required. The scanned lines need to be closely connected together each time in order to clean the surface of the object. However, it is very difficult to closely connect each scanned cleaning line together; and when cleaning a tubular object, the internal rifling structure is complex, and the conventional laser spot cannot cover the spiral grooves, easily forming cleaning dead corners, resulting in poor cleaning quality. Summary of the Invention

[0003] The main purpose of the present invention is to provide a laser cleaning mechanism and a cleaning method, aiming to solve the existing technical problems.

[0004] To achieve the above object, the present invention provides a laser cleaning mechanism, including:

[0005] A laser assembly, including a laser generator for outputting laser and a light-transmitting lens group for transmitting the laser. The light-transmitting lens group includes a fixed lens group and a rotating lens group, and the rotating lens group can perform a rotational motion around the axis.

[0006] A traveling assembly for driving the laser assembly to move radially, so that the laser travels in a spiral trajectory.

[0007] Further, the fixed lens group includes a first protective lens, an expander lens, and a focusing lens arranged in sequence at the output end of the laser emitter. The first protective lens, the expander lens, and the focusing lens are coaxially arranged.

[0008] Further, the focusing lens is axially movably arranged for adjusting the focal length of the laser.

[0009] Further, the rotating lens group includes a first reflecting mirror coaxially arranged with the fixed lens group and a second reflecting mirror arranged off the axis. The laser acts on the object to be cleaned after passing through the fixed lens group, the first reflecting mirror, and the second reflecting mirror in sequence.

[0010] Further, the rotating lens group further includes a beam splitter arranged between the fixed lens group and the first reflecting mirror. The beam splitter divides the laser into two equal-path focused light beams. One of the light beams acts on the object to be cleaned after passing through the first reflecting mirror and the second reflecting mirror, and the other light beam acts on the object to be cleaned after being conducted by a third reflecting mirror and a fourth reflecting mirror arranged off the axis. The two light beams rotate around the axis during the traveling process and move in a double-spiral trajectory.

[0011] Furthermore, the two laser beams are arranged in parallel and are arranged at an angle to the traveling direction of the laser cleaning mechanism.

[0012] Furthermore, the distance between the fixed mirror group and the rotating mirror group is adjustable.

[0013] Furthermore, the rotating mirror group further includes a second protective mirror, which is arranged at the front ends of the second reflecting mirror and the fourth reflecting mirror for protecting the lens.

[0014] Furthermore, the traveling component is detachably connected to the laser component, and the traveling component adopts a crawler traveling mechanism or a roller traveling mechanism.

[0015] Furthermore, for the cleaning method of a laser cleaning mechanism as described above, it specifically includes the following steps.

[0016] Assemble the traveling component and the laser component and place them inside the object to be cleaned.

[0017] Control the traveling component to move inside the object to be cleaned, and synchronously control the laser component to work.

[0018] The laser output by the laser passes through the first protective mirror, the beam expander, and the focusing mirror in sequence, and is split into two laser beams by the beam splitter. The two laser beams act on the object to be cleaned. During the traveling process of the two laser beams, they simultaneously perform radial movement and axial rotation, so that the two laser beams move in a double helix trajectory until the cleaning operation is completed.

[0019] The beneficial effects of the present invention are as follows:

[0020] Through the mutual cooperation of the traveling component and the laser component, the traveling component drives the laser component to move axially. At the same time, the rotating mirror group of the laser component rotates around the axis, so that the laser beam moves in a double helix trajectory, avoiding the problem of missing cleaning positions. At the same time, the cleaning can be completed completely by a single movement, improving the cleaning quality. In addition, for the gun barrel structure, it can adapt to the rifling structure inside it, avoiding cleaning dead corners and ensuring the cleaning quality. Description of the Drawings

[0021] Figure 1 It is a schematic structural diagram of the present invention;

[0022] Figure 2 It is a schematic structural diagram of the laser component of the present invention;

[0023] Figure 3 It is a schematic structural diagram of the fixed mirror group and the rotating mirror group of the present invention;

[0024] Figure 4 It is for the present invention Figure 3 Schematic diagram of a further embodiment of the structure;

[0025] Figure 5 Schematic diagram of the columnar housing structure of the present invention;

[0026] Figure 6 Schematic diagram of the walking component structure of the present invention.

[0027] Explanation of reference numerals:

[0028] 100, laser component; 101, laser generator; 102, fixed mirror group; 1021, first protective mirror; 1022, beam expander; 1023, focusing mirror; 103, rotating mirror group; 1031, first reflecting mirror; 1032, second reflecting mirror; 1033, beam splitter; 1034, third reflecting mirror; 1035, fourth reflecting mirror; 1036, second protective mirror; 104,; 105,; 106,; 107,; 108,; 109,; 200, traveling component; 201,; 202,; 203,; 204,; 205,; 206,; 207,; 208,; 209,. Detailed implementation manners

[0029] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0030] Please refer to Figure 1 and 2 The present invention provides a laser cleaning mechanism, including:

[0031] The laser component 100 includes a laser generator 101 for outputting laser and a light-transmitting mirror group for transmitting the laser. The light-transmitting mirror group includes a fixed mirror group 102 and a rotating mirror group 103, and the rotating mirror group 103 can rotate around the axis;

[0032] The traveling component 200 is used to drive the laser component 100 to move radially, so that the laser travels in a spiral trajectory.

[0033] In this embodiment, through the cooperation of the traveling component 200 and the laser component 100, the traveling component 200 moves along the object to be cleaned. During the movement, the laser component 100 outputs a rotatable laser beam, so that the laser beam moves radially and rotates axially at the same time, presenting a spiral trajectory movement, realizing the laser cleaning operation. The cleaning operation can be completed with a single movement, improving the cleaning quality. In addition, for the gun barrel structure, it can adapt to the rifling structure inside it, avoid cleaning dead corners, and ensure the cleaning quality.

[0034] It should be noted that the laser component 100 is installed in a cylindrical shell, and the traveling component 200 is connected to the cylindrical shell 300.

[0035] In one embodiment, please refer to Figure 3 , the fixed lens group 102 includes a first protective lens 1021, a beam expander 1022, and a focusing lens 1023 arranged in sequence at the output end of the laser emitter 101. The first protective lens 1021, the beam expander 1022, and the focusing lens 1023 are coaxially arranged.

[0036] With such a setting in this embodiment, through the combination of the beam expander 1022 and the focusing lens 1023, the laser output by the laser 101 contacts the object to be cleaned with a suitable beam diameter and focal length, ensuring the laser cleaning quality. The setting of the first protective lens 1021 can protect the laser output end from being affected by pollutants and ensure the quality of laser output.

[0037] In one embodiment, the focusing lens 1023 is movably arranged along the axis for adjusting the focal length of the laser.

[0038] Specifically, the focusing lens 1023 can be controlled to move by a linear motor.

[0039] With such a setting in this embodiment, it solves the cumbersome operation of traditional fixed focal length adjustment. By dynamically and real-time adjusting the focal length of the focusing lens, the "one machine with multiple apertures" adaptation is realized, greatly improving the versatility of the laser cleaning equipment, and it can be extended to cleaning scenarios such as the inner walls of variable-diameter cylinders of ship pipelines and pressure vessels, especially suitable for batch production environments where the workpiece size needs to be frequently changed.

[0040] In one embodiment, please refer to Figure 3 , the rotating lens group 103 includes a first reflecting mirror 1031 coaxially arranged with the fixed lens group 102 and a second reflecting mirror 1032 arranged off-axis. The laser acts on the object to be cleaned after passing through the fixed lens group 101, the first reflecting mirror 1031, and the second reflecting mirror 1032 in sequence.

[0041] Specifically, the rotating lens group 103 is arranged in a shell, and the shell is controlled to rotate by a hollow motor for realizing the rotation of the rotating lens group 103 around the axis during the traveling process, so that the laser presents a spiral trajectory movement.

[0042] In this embodiment, the laser output by the laser 101 passes through the fixed mirror group 102 and then successively passes through the first reflecting mirror 1031 and the second reflecting mirror 1032, so that the direction of the laser transmission is changed from the axial direction to the inclined direction towards the surface of the object to be cleaned. At this time, the traveling mechanism 200 is cooperated to move the laser along the object to be cleaned, and under the action of the rotating mirror group 103, the laser moves in a spiral trajectory to clean the object.

[0043] In one embodiment, please refer to Figure 4 , the rotating mirror group 103 further includes a beam splitter 1033 disposed between the fixed mirror group 102 and the first reflecting mirror 1031. The beam splitter 1033 divides the laser into two equal-path focused light beams. One of the laser beams acts on the object to be cleaned through the first reflecting mirror 1031 and the second reflecting mirror 1032, and the other laser beam acts on the object to be cleaned after being conducted through the third reflecting mirror 1034 and the fourth reflecting mirror 1035 disposed off the axis. The two laser beams rotate around the axis during the traveling process and move in a double spiral trajectory.

[0044] In this embodiment, through the mutual cooperation of the traveling component 200 and the laser component 100, the traveling component drives the laser component 100 to move axially. At the same time, the laser outputs two laser beams through the beam splitter 1033, and the rotating mirror group 103 of the laser component 100 rotates around the axis, so that the laser beams move in a double spiral trajectory, avoiding the problem of missing cleaning positions. At the same time, the cleaning can be completed completely by a single movement, improving the cleaning quality. In addition, for the gun barrel structure, it can adapt to the rifling structure inside it, avoid cleaning dead corners, and ensure the cleaning quality.

[0045] In one embodiment, the two laser beams are arranged in parallel and are arranged at an angle to the traveling direction of the laser cleaning mechanism.

[0046] Preferably, the angle is 45°. At this degree, it can not only ensure that additional components can be expanded around the rotating mirror group 103 on the premise of not affecting the contact between the laser output and the object to be cleaned (for example, an expandable protection mechanism can be used to isolate the influence of pollutants generated during the laser cleaning process on the rotating mirror group 103), but also ensure that the laser contacts the object to be cleaned in a more appropriate path.

[0047] In one embodiment, please refer to Figure 5 , the distance between the fixed mirror group 102 and the rotating mirror group 103 is adjustable.

[0048] In this embodiment, it can be understood that the fixed mirror group 102 and the rotating mirror group 103 are installed in a cylindrical shell. The cylindrical shell 300 can be set as a telescopic sleeve structure. The fixed mirror group 102 and the rotating mirror group 103 are placed in different sleeves. Before the cleaning operation starts, the sleeve installed with the rotating mirror group 103 can be driven to move into the object to be cleaned first. When it reaches the end, the walking component 200 is controlled to enter the object to be cleaned, which can ensure the stability of the laser cleaning process and avoid the problem that the floating generated when the walking component 200 contacts the object to be cleaned affects the cleaning quality.

[0049] Specifically, the telescopic sleeve structure can be controlled to expand and contract by a lead screw and a stepper motor.

[0050] In one embodiment, please refer to Figure 4 , the rotating mirror group 103 further includes a second protective mirror 1036, which is arranged at the front ends of the second reflecting mirror 1032 and the fourth reflecting mirror 1035 for protecting the lens.

[0051] With this setting in this embodiment, through the setting of the second protective mirror 1036, it can avoid the problem that the soot generated during the laser cleaning process enters the rotating mirror group 103 and contaminates the lenses such as the beam splitter 1033, affecting the subsequent laser cleaning quality, and ensures the service life of the laser cleaning component 100.

[0052] In one embodiment, please refer to Figure 6 , the traveling component 200 is detachably connected to the laser component 100, and the traveling component 200 adopts a crawler traveling mechanism or a roller traveling mechanism.

[0053] Specifically, both the crawler traveling mechanism and the roller traveling mechanism include three crawlers or rollers that are equidistantly surrounded around the laser component 100 and are connected to it through support rods to provide power for the movement of the laser component 100.

[0054] It should be noted that the support rod is detachably connected to the housing of the laser component 100.

[0055] The present invention also provides a cleaning method for a laser cleaning mechanism, which specifically includes the following steps,

[0056] Assemble the traveling component 200 and the laser component 100 and place them in the object to be cleaned;

[0057] Control the traveling component 200 to move along the object to be cleaned and synchronously control the laser component 100 to work;

[0058] The laser output by the laser passes through the first protective mirror 1021, the beam expander 1022, and the focusing mirror 1023 in sequence, and is split into two beams of laser by the beam splitter 1033. The two beams of laser act on the object to be cleaned. During the movement of the two beams of laser, they simultaneously perform radial movement and axial rotation, so that the two beams of laser move in a double helix trajectory until the cleaning operation is completed.

[0059] This cleaning method solves the problems of the complexity of the cleaning operation with the laser output by traditional equipment moving in a straight line reciprocally and the poor cleaning quality. By this method, a moving double helix trajectory laser can be output, avoiding the problem of missing cleaning positions. At the same time, the cleaning can be completed completely with a single movement, improving the cleaning quality. In addition, for the gun barrel structure, it can adapt to the rifling structure inside it, avoiding cleaning dead corners and ensuring the cleaning quality.

[0060] It should be noted that if there are directional indications such as up, down, left, right, front, back... in the embodiments of the present invention, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture as shown in the drawings. If the specific posture changes, the directional indications will also change accordingly.

[0061] In addition, if there are descriptions such as "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and / or" appearing throughout the text includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, or solution B, or the solution where A and B are satisfied simultaneously. In addition, "a plurality" means two or more. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those skilled in the art can implement it. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist.

[0062] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A laser cleaning mechanism, characterized in that ,include: A laser assembly (100) comprises a laser generator (101) for outputting laser light and a light-transmitting lens group for transmitting laser light, wherein the light-transmitting lens group comprises a fixed lens group (102) and a rotating lens group (103), and the rotating lens group (103) can rotate around an axial direction; The moving component (200) is used to drive the laser component (100) to move radially so that the laser moves in a spiral trajectory.

2. A laser cleaning mechanism as claimed in claim 1, characterized in that: The fixed mirror group (102) comprises a first protective mirror (1021), a beam expander (1022) and a focusing mirror (1023) which are arranged in sequence at the output end of the laser emitter (101); the first protective mirror (1021), the beam expander (1022) and the focusing mirror (1023) are arranged coaxially.

3. A laser cleaning mechanism as claimed in claim 2, characterized in that: The focusing mirror (1023) is movably arranged along the axial direction and is used to adjust the focal length of the laser.

4. A laser cleaning mechanism as claimed in claim 1, characterized in that: The rotating mirror group (103) comprises a first reflecting mirror (1031) arranged coaxially with the fixed mirror group (102) and a second reflecting mirror (1032) arranged offset from the axis, and the laser sequentially passes through the fixed mirror group (101), the first reflecting mirror (1031) and the second reflecting mirror (1032) to act on the object to be cleaned.

5. A laser cleaning mechanism as claimed in claim 4, characterized in that: The rotating mirror group (103) further comprises a beam splitter (1033) arranged between the fixed mirror group (102) and the first reflector (1031), wherein the beam splitter (1033) splits the laser into two equally focused beams, wherein one beam of the laser acts on the object to be cleaned via the first reflector (1031) and the second reflector (1032), and the other beam of the laser acts on the object to be cleaned after being transmitted via the third reflector (1034) and the fourth reflector (1035) arranged off the axis, and the two beams of the laser rotate around the axis during their travel, and move in a double helical trajectory.

6. A laser cleaning mechanism as claimed in claim 5, characterized in that: The two laser beams are arranged in parallel and form an angle with the moving direction of the laser cleaning mechanism.

7. A laser cleaning mechanism according to claim 1, characterized in that: The distance between the fixed mirror group (102) and the rotating mirror group (103) is adjustable.

8. A laser cleaning mechanism as claimed in claim 5, characterized in that: The rotating mirror assembly (103) further comprises a second protective mirror (1036), which is arranged at the front end of the second reflecting mirror (1032) and the fourth reflecting mirror (1035) and is used to protect the lenses.

9. A laser cleaning mechanism as claimed in claim 1, characterized in that: The traveling component (200) is detachably connected to the laser component (100), and the traveling component (200) adopts a crawler traveling mechanism or a roller traveling mechanism.

10. A cleaning method for a laser cleaning mechanism according to any one of claims 1 to 9, characterized in that: The specific steps include: Assembling the traveling assembly (200) and the laser assembly (100), and placing them inside the object to be cleaned; Controlling the traveling component (200) to move along the inside of the object to be cleaned, and synchronously controlling the laser component (100) to work; The laser output by the laser sequentially passes through the first protective mirror (1021), the beam expander (1022) and the focusing mirror (1023), and is split into two laser beams via the beam splitter (1033). The two laser beams act on the object to be cleaned. During the movement of the two laser beams, the two laser beams simultaneously move radially and rotate axially, so that the two laser beams move in a double helical trajectory until the cleaning operation is completed.

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