A composite laser cleaning terminal and processing method

Abstract

The present invention discloses a composite laser cleaning terminal and a processing method, which comprises two cleaning devices, a texturing device and a gun head seat, wherein the cleaning device and the texturing device are used to emit a cleaning light beam and a texturing light beam respectively, and the gun head seat has an upper arc groove surface in the middle position, inclined surfaces on both side walls and a plurality of guide holes opened in the middle, the arc groove surface is used to cooperate with a clamping seat to clamp and fix the texturing device, and the inclined surfaces on both sides are used to configure an adjustment component, and the clamping seat is equipped on the adjustment component to enable the cleaning device to be installed, and then by integrating a plurality of independent laser light paths together, it is achieved that the lasers output by a plurality of light paths act on a very small area on the surface of the material at the same time, and the cleaning and texturing functions are realized synchronously, which can greatly improve the work efficiency.

Description

Technical Field

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

[0002] In order to better prevent corrosion during the production and use of pipelines, it is necessary to remove rust and oxide layers on the surface of the pipelines and roughen the metal and non-metal to increase adhesion and improve corrosion resistance. The sandblasting technology currently used not only produces a large amount of dust during use, which seriously pollutes the air and water, but also the sand itself is a consumable material, which will generate very high costs in transportation, storage and use.

[0003] Laser pipeline surface treatment technology not only uses clean energy but also does not produce secondary pollution during use. Because it only uses electricity, the operating cost is very low. Laser pipeline surface treatment technology meets the pipeline surface treatment process while completely solving the environmental pollution problem.

[0004] There is a cleaning-texturing composite laser output head on the market, which can split a laser beam into two beams for cleaning and texturing. The equipment first splits the laser beam, and then changes the direction of the beam through two reflective focusing mirrors at different positions. Obviously, this equipment must have energy loss and interference in the middle of the beam at the reflective focusing part. At the same time, the processing accuracy of the emission focusing lens cannot be guaranteed, and it is only theoretically possible. In addition, its disadvantages are that the focal length of the split laser cannot be freely adjusted; the optical path structure is cumbersome, and the specifications of the structural parts and optical lenses are complex and difficult to process and use in the market. Summary of the invention

[0005] The present application provides a composite laser cleaning terminal and processing method, which integrates several independent laser light paths together, so that the lasers output by multiple light paths can act on a very small area on the surface of the material at the same time, and simultaneously realize the functions of cleaning and roughening, which greatly improves the efficiency.

[0006] According to one aspect, a composite laser cleaning terminal is provided, which at least comprises:

[0007] a cleaning device for emitting a cleaning light beam;

[0008] a texturing device for emitting a texturing light beam; and

[0009] A gun head seat is used to integrate a cleaning device and a texturing device, and the gun head seat is provided with an adjustment component for changing the distance between the cleaning beam and the texturing beam.

[0010] Furthermore, the number of the cleaning devices is two groups, which are respectively mounted on both sides of the gun head seat through adjustment components, and the texturing device is arranged between the two cleaning devices.

[0011] Furthermore, the cleaning terminal also includes a cover body in which the cleaning device, the texturing device and the gun head seat are built-in, and a slot is penetrated downward at the bottom of the cover body to allow the cleaning light beam and the texturing light beam to be emitted out of the cover.

[0012] Furthermore, a dust extraction nozzle is arranged at the lower end of the notch of the cover body, and the dust extraction nozzle is connected to the dust extraction device through a dust extraction pipe.

[0013] Furthermore, the cleaning terminal also includes an air blowing device, which has a baffle and an air blowing nozzle. The baffle is used to fix the dust extraction nozzle. The air blowing nozzle is arranged between the slot and the dust extraction nozzle, and its blowing direction is arranged toward the baffle.

[0014] Furthermore, the blowing nozzle is composed of a plurality of blowing pipes, and a gap is formed between the blowing pipes so that the light beam passes through the gap. The blowing direction of the blowing pipe is inclined downward toward the baffle, forming an angle with the baffle.

[0015] Furthermore, the dust extraction nozzle is a trumpet structure with upper and lower openings, and the outer wall has a convex portion extending outward and connected to the dust extraction pipe.

[0016] According to another aspect, a composite laser cleaning processing method is provided, which is to compound three independent lasers to form two different types of lasers, so that the lasers emit two cleaning beams acting on the surface of the material to be processed and one roughening beam acting on the surface of the material to be processed, wherein the running direction of the laser is one cleaning beam in front, one roughening beam in the middle, and one cleaning beam in the back.

[0017] Furthermore, the multi-optical path system in the laser integrates the light beam, focuses the light spot to a size of 0.1-0.3mm, and performs cleaning operations at a light spot trajectory speed of 1000-8000mm / s.

[0018] Furthermore, the single pulse energy output by the laser is between 0-1000 mj, and the single pulse frequency is between 1-20 KHZ.

[0019] According to the cleaning terminal and processing method of the above embodiment, it can be known that the present invention has the following beneficial effects:

[0020] 1. The optical path can be adjusted individually, which is convenient for later maintenance, saves the overall cost of the project, and significantly improves work efficiency;

[0021] 2. The working distance between the three optical paths is adjustable, and the gun can be disassembled into a separate handheld gun head for use, making the use of this gun head diversified, humanized and portable;

[0022] 3. This composite laser cleaning terminal is suitable for product diversification and can be applied to products with different structures such as arc surface, flat surface, curved surface, etc.

[0023] 4. Equipped with dust extraction device and air blowing device, it can avoid secondary contamination of the product surface caused by splashes after cleaning, and at the same time protect the lens. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the overall structure of the cleaning terminal for this application.

[0025] Figure 2 This is a schematic diagram of the internal structure of the cleaning terminal for this application.

[0026] Figure 3 Another angle view of the internal structure of the cleaning terminal for this application.

[0027] Figure 4 It is a schematic diagram of the three-dimensional structure of the cleaning device.

[0028] Figure 5 It is a structural schematic diagram of the gun head seat.

[0029] Figure 6 It is a schematic diagram of the three-dimensional structure of the blowing nozzle.

[0030] Figure 7 This is a comparison chart of the pipeline surface before and after treatment.

[0031] Figure 8 Comparison of weld surface before and after treatment

[0032] Reference numerals shown in the figure: 10, cover body; 101, notch; 20, cleaning device; 30, texturing device; 40, gun head seat; 401, arc groove surface; 402, guide hole; 403, inclined surface; 50, adjustment assembly; 51, slide seat; 52, guide rod; 53, slider; 54, adjustment cap; 60, dust extraction nozzle; 61, dust extraction pipe; 601, convex portion; 70, blowing device; 71, baffle; 72, blowing nozzle; 721, blowing pipe; 722, gap; 80, light beam; 90, clamping seat. DETAILED DESCRIPTION

[0033] The present invention is further described in detail below by specific embodiments in conjunction with the accompanying drawings. Wherein similar elements in different embodiments adopt associated similar element numbers. In the following embodiments, many detailed descriptions are for making the present application better understood. However, those skilled in the art can easily recognize that some features can be omitted in different situations, or can be replaced by other elements, materials, methods. In some cases, some operations related to the present application are not shown or described in the specification, this is to avoid the core part of the present application being overwhelmed by too much description, and for those skilled in the art, it is not necessary to describe these related operations in detail, and they can fully understand the related operations according to the description in the specification and the general technical knowledge in the art.

[0034] The serial numbers of the components in this document, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings).

[0035] Please refer to Figure 1-Figure 6 , is a composite laser cleaning terminal of the laser equipment of the present application, that is, a laser output head device, which includes two cleaning devices 20, a texturing device 30 and a gun head seat 40, wherein the cleaning device 20 and the texturing device 30 are used to emit a cleaning beam 80 and a texturing beam 80, and the gun head seat 40 adopts Figure 5 The structure shown has an upper arc groove surface 401 in the middle, inclined surfaces 403 on both side walls and a plurality of guide holes 402 opened in the middle. The arc groove surface 401 is used to cooperate with the clamping seat 90 to clamp and fix the texturing device 30, and the inclined surfaces 403 on both sides are used to configure the adjustment component 50. The clamping seat 90 is equipped on the adjustment component 50 so that the cleaning device 20 can be installed, thereby enabling the two cleaning devices 20 to realize a dual-axis optical path design and the texturing device 30 to realize a single-axis optical path design.

[0036] When the adjustment component 50 adopts a design consisting of a slide seat 51, a guide rod 52, a slider 53 and an adjustment cap 54, the slide seat 51 is fixed on the inclined surface 403, and the slider 53 is sleeved on the guide rod 52. By rotating the adjustment cap 54 to drive the slider 53 and the clamping seats 90 on both sides to move, the working distances between the three optical paths can be adjusted, and the gun head can be disassembled for use as a separate handheld gun head, making the use scenarios of this gun head diversified, user-friendly and portable.

[0037] In the above embodiment, if Figure 3As shown, the cleaning terminal also includes a cover body 10 in which the cleaning device 20, the texturizing device 30 and the gun head seat 40 are built-in, and a slot 101 is penetrated downward from the bottom of the cover body 10 to allow the cleaning light beam 80 and the texturizing light beam 80 to be emitted out of the cover; a dust extraction nozzle 60 is arranged at the lower end of the slot 101 of the cover body 10, and the outer wall of the dust extraction nozzle 60 has an inclined protrusion 601, and the protrusion 601 is connected to the dust extraction device (not shown) through a dust extraction pipe 61.

[0038] Preferably, the cleaning terminal also includes a blowing device 70, the blowing device 70 has a baffle 71 and a blowing nozzle 72, the blowing nozzle 72 is composed of a plurality of blowing pipes 721 arranged horizontally, and a gap 722 is formed between the air pipes, so that the light beam passes through the gap 722. In this preferred embodiment, the baffle 71 is used to fix the dust extraction nozzle 60 with upper and lower openings and a horn structure, so that the structure of the entire cleaning terminal is more compact. At the same time, the blowing nozzle 72 is arranged between the slot 101 and the dust extraction nozzle 60, so that the blowing direction is inclined downward toward the baffle 71, and an angle is formed with the baffle 71, so that a downward airflow is formed during blowing to prevent damage to the lens.

[0039] The composite laser cleaning method mainly utilizes the characteristics of multiple different wavelengths and different beam qualities to clean and roughen the pipeline surface.

[0040] The processing method mainly combines three independent lasers to form two different types of lasers, so that the laser emits two cleaning beams acting on the surface of the material to be processed and one roughening beam acting on the surface of the material to be processed, wherein the light spot is focused to a size of 0.1-0.3mm, and the light spot trajectory is controlled to operate at an operating speed of 1000-8000mm / s. The operating direction of the laser is a cleaning beam in front, a roughening beam in the middle, and a cleaning beam in the back; the following is further explained in conjunction with the embodiments.

[0041] Embodiment 1

[0042] This example aims at cleaning the 100-300 micron rust on the pipeline and roughening the cleaned metal layer while ensuring that the anchor pit depth reaches 50-90um.

[0043] Using a fiber laser with a peak power of 90KW and a pulse width of 100ns at a frequency of 20K, the spot track moves at a speed of 6000mm / s to clean the surface of 100-300 microns. At the same time, with a single pulse energy of 600mj and a frequency of 10K, the spot track moves at a speed of 5000mm / s, and the optical path system moves at a speed of 30mm / s to roughen the metal. Rust is cleaned by taking advantage of the difference in the optical physical properties of rust and the metal itself. At the same time, 50J / mm 2 The energy per unit area is used to roughen the metal, so that the anchor pit depth reaches 70 microns.

[0044] Embodiment 2

[0045] This embodiment cleans and roughens the surface of the pipeline weld while ensuring that the anchor pit depth of the weld reaches 50-59 um.

[0046] The fiber laser with 20KW peak power and 40K frequency and 60ns pulse width is used. The spot track movement speed is 6000mm / s to clean the 50-90 micron rust on the surface. At the same time, the single pulse energy of 700mj and the frequency of 12K, the spot track movement speed is 5000mm / s, and the moving speed of the optical path system is 30mm / s to roughen the metal. The rust is cleaned by using the difference in the optical physical properties of the weld surface material and the metal itself. At the same time, 40J / mm 2 The energy per unit area is used to roughen the metal, so that the anchor pit depth reaches 60 microns.

[0047] The above specific examples are used to illustrate the present invention, which is only used to help understand the present invention and is not intended to limit the present invention. For those skilled in the art, according to the concept of the present invention, some simple deductions, modifications or substitutions can be made.

Claims

1. A composite laser cleaning terminal, characterized in that: It includes at least: a cleaning device for emitting a cleaning light beam; a texturing device for emitting a texturing light beam; and A gun head seat, a side wall of which is provided with an inclined surface, the texturing device is mounted on the gun head seat, the inclined surface is used to configure an adjustment component, and the adjustment component can drive the cleaning device to move along the inclined surface to change the distance between the cleaning beam and the texturing beam; The cleaning terminal also includes a cover body in which the cleaning device, the texturing device and the gun head seat are built, and a slot is passed downward through the bottom of the cover body to allow the cleaning beam and the texturing beam to be emitted out of the cover; a dust extraction nozzle is arranged at the lower end of the slot of the cover body, and the dust extraction nozzle is connected to the dust extraction device through a dust extraction pipe; The cleaning terminal further comprises an air blowing device, the air blowing device comprises a baffle and an air blowing nozzle, the baffle is used to fix the dust extraction nozzle, the air blowing nozzle is arranged between the notch and the dust extraction nozzle, and its air blowing direction is arranged toward the baffle; the air blowing nozzle is composed of a plurality of air blowing pipes, and a gap is formed between the air blowing pipes so that the light beam passes through the gap, and the air blowing direction of the air blowing pipe is arranged obliquely downward toward the baffle, forming an angle with the baffle; The dust extraction nozzle is a trumpet structure with upper and lower openings, and the outer wall has a convex portion extending outwards and connected to the dust extraction pipe.

2. A composite laser cleaning terminal as claimed in claim 1, characterized in that: The number of the cleaning devices is two groups, which are respectively mounted on both sides of the gun head seat through adjustment components, and the texturing device is arranged between the two cleaning devices.

3. A composite laser cleaning method for a composite laser cleaning terminal using the composite laser cleaning terminal according to any one of claims 1 or 2, characterized in that: The processing method is to compound three independent lasers to form two different types of lasers, so that the lasers emit two cleaning beams acting on the surface of the material to be processed and one roughening beam acting on the surface of the material to be processed, wherein the running direction of the laser is one cleaning beam in front, one roughening beam in the middle, and one cleaning beam in the back.

4. A composite laser cleaning method as claimed in claim 3, characterized in that: The multi-optical path system in the laser integrates the light beam, focusing the light spot to a size of 0.1-0.3mm, and the light spot trajectory movement speed is 1000-8000mm / s for cleaning operations.

5. A composite laser cleaning method as claimed in claim 3, characterized in that: The single pulse energy output by the laser is between 0-1000mj, and the single pulse frequency is between 1-20KHZ.

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