阅读说明：本技术 一种激光束合成设备及其合成方法 (Laser beam synthesizing equipment and synthesizing method thereof ) 是由 谢曦宇 郑佰成 史丹丹 付敏 于 2020-04-30 设计创作，主要内容包括：本发明公布了一种激光束合成设备及其合成方法,至少包括一激光清洗头、一激光毛化头、一激光合束模块以及一扫描聚焦模块；所述激光清洗头和激光毛化头分别输出清洗激光和毛化激光,所述的激光合束模块具有调整清洗光束和激光毛化光束间距、并使光束平行射出的合束棱镜；通过合束棱镜将三个大间距的激光束合成三个小间距光束,入射到同一振镜和场镜来实现各种复合工艺应用。(The invention discloses a laser beam synthesis device and a synthesis method thereof, which at least comprise a laser cleaning head, a laser texturing head, a laser beam combination module and a scanning focusing module; the laser cleaning head and the laser texturing head respectively output cleaning laser and texturing laser, and the laser beam combining module is provided with a beam combining prism which adjusts the distance between the cleaning beam and the laser texturing beam and enables the beams to be emitted in parallel; three laser beams with large space are synthesized into three beams with small space by a beam combining prism and then are incident to the same galvanometer and field lens to realize various composite process applications.)

1. A laser beam synthesizing device is characterized by at least comprising a laser cleaning head, a laser texturing head, a laser beam combining module and a scanning focusing module; the laser cleaning head and the laser texturing head respectively output cleaning laser and texturing laser, and the laser beam combining module is provided with a beam combining prism which adjusts the distance between the cleaning beam and the laser texturing beam and enables the beams to be emitted in parallel.

2. The laser beam combining apparatus according to claim 1, wherein the number of the laser cleaning heads is two, and the laser cleaning heads are arranged alternately with the laser texturing heads.

3. The laser beam combining apparatus according to claim 2, wherein the beam combining prism comprises a first adjusting module and a second adjusting module for adjusting two sets of cleaning lasers respectively, wherein the first adjusting module and the second adjusting module respectively have a first refractive lens group and a second refractive lens group which are disposed in parallel up and down on the optical path and inclined with respect to a horizontal plane, and a certain angle is formed between the second refractive lens group of the first adjusting module and the second refractive lens group of the second adjusting module, so that the cleaning lasers are emitted in parallel.

4. The laser beam synthesizing apparatus according to claim 3, wherein the synthesizing apparatus further comprises a cover body, a mounting seat is arranged in the cover body, a bearing groove for accommodating the gun head is arranged on the mounting seat, and a pressing block for fixing the laser cleaning head and a light path baffle for fixing the laser texturing head are arranged on the bearing groove.

5. The laser beam combining apparatus according to any one of claims 1 to 4, wherein the combining apparatus further comprises a collimating module provided in front of the laser beam combining module.

6. A method for synthesizing laser beams with the same wavelength is characterized in that three mutually independent lasers with the same wavelength emit three laser beams to act on a beam combining prism, the space between the three input laser beams is adjusted through the beam combining prism, and three cleaning beams, a texturing beam and a cleaning beam which are sequentially arranged in sequence and act on the surface of a material to be processed are output through a scanning and focusing module.

7. The method as claimed in claim 6, wherein the distance from the laser texturing head to the beam combining prism is adjusted according to the incident path distance of the cleaning beam, so that the path distances of the emitted beams are uniform.

8. The method of claim 6, further comprising the step of: before the laser beam acts on the beam-combining prism, the collimation adjustment is carried out on the incident light beam.

Technical Field

The application belongs to the technical field of laser cleaning, and particularly relates to laser beam synthesis equipment and a synthesis method thereof.

Background

The laser surface treatment technology not only uses clean energy but also does not generate secondary pollution in the using process. At present, a laser cleaning-texturing composite processing head with application number of CN201910845749.9 is published on Chinese patent network, which divides a laser beam into two beams for cleaning and texturing. The equipment firstly splits the laser and then changes the beam direction through the two reflecting focusing mirrors at different positions, obviously the equipment has energy loss and interference phenomena at the middle position of the beam at the reflecting focusing part, and has the defects of complex structure, poor continuous laser texturing effect, easy regeneration of oxide and low efficiency.

Disclosure of Invention

The invention mainly aims at the problems, and provides laser beam synthesis equipment and a synthesis method thereof.

In order to achieve the purpose, the invention provides the following technical scheme:

according to one aspect, the present invention provides a laser beam combining apparatus, at least comprising a laser cleaning head, a laser texturing head, a laser beam combining module and a scanning focusing module; the laser cleaning head and the laser texturing head respectively output cleaning laser and texturing laser, and the laser beam combining module is provided with a beam combining prism which adjusts the distance between the cleaning beam and the laser texturing beam and enables the beams to be emitted in parallel.

As an improvement of the invention used for the same-wavelength laser beam synthesis equipment, the number of the laser cleaning heads is two, and the laser cleaning heads and the laser texturing heads are arranged in a staggered mode.

As an improvement of the present invention for a co-wavelength laser beam synthesizing device, the beam combining prism includes a first adjusting module and a second adjusting module for adjusting two sets of cleaning lasers, respectively, wherein the first adjusting module and the second adjusting module respectively have a first refractive lens group and a second refractive lens group which are arranged in parallel up and down on a light path channel and inclined with a horizontal plane, and a certain included angle is formed between the second refractive lens group of the first adjusting module and the second refractive lens group of the second adjusting module, so that the cleaning lasers are emitted in parallel.

As an improvement of the same-wavelength laser beam synthesis device, the synthesis device further comprises a cover body, wherein an installation seat is arranged in the cover body, a bearing groove for containing the gun head is formed in the installation seat, and a pressing block for fixing the laser cleaning head and a light path baffle for fixing the laser texturing head are arranged on the bearing groove.

As an improvement of the invention for the same-wavelength laser beam combining device, the combining device further comprises a collimating module arranged at the front side of the laser beam combining module.

According to another aspect, the invention further provides a method for synthesizing the laser beams with the same wavelength, wherein the method for combining the laser beams comprises the steps of enabling three mutually independent lasers with the same wavelength to emit three laser beams to act on a beam combining prism, adjusting the distance between the three input laser beams through the beam combining prism, and outputting three cleaning light beams, three texturing light beams and three cleaning light beams which are sequentially arranged in a front-back mode and act on the surface of a material to be processed through a scanning and focusing module.

As an improvement of the same-wavelength laser beam synthesis method, the distance from the laser texturing head to the beam combining prism is adjusted according to the incident path distance of the cleaning beam, so that the path distances of the emitted beams are consistent.

As an improvement of the method for synthesizing the laser beams with the same wavelength, the method further comprises the following steps: before the laser beam acts on the beam-combining prism, the collimation adjustment is carried out on the incident light beam.

According to the above technical solution, it can be known that the same-wavelength laser beam synthesizing apparatus and the synthesizing method thereof provided by the present invention have the following technical and economic advantages: the laser cleaning device can reduce the distance between the light beams of the three laser heads to the minimum through the beam combining prism, and simultaneously emit three laser beams through one scanning system to carry out composite cleaning, and can be applied to the fields of cleaning, texturing, cleaning, pulse-continuous-pulse composite cleaning reciprocating operation, continuous-quasi-continuous-pulse to realize the process application of heating, smashing, cleaning and the like, and finally achieve the purpose of high-quality cleaning.

Drawings

Fig. 1 is a schematic structural diagram of a laser synthesizing apparatus according to the present application.

Fig. 2 is a schematic diagram of an internal structure of the laser synthesizing apparatus according to the present application.

Fig. 3 is an exploded view of the apparatus of the present application.

Fig. 4 is a schematic diagram of a beam combining prism according to the present application.

Fig. 5 is a schematic front structure diagram of the laser beam combining module of the present application.

Fig. 6 is a schematic back structure diagram of the laser beam combining module of the present application.

Detailed Description

The present invention will be described in further detail with reference to the following detailed description and accompanying drawings. Wherein like elements in different embodiments are numbered with like associated elements. In the following description, numerous details are set forth in order to provide a better understanding of the present application. However, those skilled in the art will readily recognize that some of the features may be omitted or replaced with other elements, materials, methods in different instances. In some instances, certain operations related to the present application have not been shown or described in detail in order to avoid obscuring the core of the present application from excessive description, and it is not necessary for those skilled in the art to describe these operations in detail, so that they may be fully understood from the description in the specification and the general knowledge in the art.

The numbering of the components as such, e.g., "first", "second", etc., is used herein only to distinguish the objects as described, and does not have any sequential or technical meaning. The term "connected" and "coupled" when used in this application, unless otherwise indicated, includes both direct and indirect connections (couplings).

Referring to fig. 1-6, in one aspect, the present embodiment provides a laser beam combining apparatus, which at least includes a laser cleaning head 10, a laser texturing head 20, a laser beam combining module 40, and a scanning focusing module 50; the laser cleaning head 10 and the laser texturing head 20 respectively output cleaning laser and texturing laser, and a beam combining prism 41 which adjusts the distance between the cleaning beam and the laser texturing beam and enables the beams to be emitted in parallel is arranged in the laser beam combining module 40.

The number of the laser cleaning heads 10 in the present embodiment is two, in which the laser texturing heads 20 are arranged in the middle.

As shown in fig. 4, the beam combining prism 41 specifically includes a first adjusting module 410 and a second adjusting module 411 for adjusting two sets of cleaning lasers, respectively, wherein the first adjusting module 410 has a first refractive lens group 4100a and a second refractive lens group 4101a, the second adjusting module 411 has a first refractive lens group 4110b and a second refractive lens group 4111b, the first refractive lens group and the second refractive lens group are disposed in parallel up and down on the optical path, respectively, and have a certain inclination angle with the horizontal plane, and meanwhile, a certain included angle is formed between the second refractive lens group 4101a on the first adjusting module 410 and the second refractive lens group 4111b on the second adjusting module; it can be understood that the frosted light beam in this embodiment is emitted from the beam combining prism 41, the cleaning light beam with the distance S1 between the two sides and the frosted light beam passes through the beam combining prism 41, and then can be parallel to the frosted light beam, and the width of the distance from the frosted light beam is changed from the initial S1 to S2(S1> S2), and then the scanning and focusing module 50 is used to realize the cleaning laser-frosted laser-cleaning laser with small distance and parallel to each other by single scanning, and the composite laser is synthesized to be suitable for cleaning products with different structures such as arc surface, plane, curved surface, etc., so that the conversion time of the cleaning and frosting process is greatly shortened, and the possibility of oxide generation is reduced.

In addition, as shown in fig. 2 and fig. 3, the synthesis apparatus further includes a cover body 60, an installation seat 70 is disposed in the cover body 60, a bearing groove 701 for accommodating the laser gun head is disposed on the installation seat 70, and a pressing block 80 and a light path blocking plate 90 are disposed on the bearing groove 701; the bearing groove 701 is used for being matched with the pressing block 80 to fix the laser cleaning head 10 and the laser texturing head 20, and is matched with the light path baffle 90 to adjust the position of the laser texturing head 20, so that the traveling displacement of the texturing light beam to the scanning focusing module 50 is consistent with the traveling displacement of the cleaning light beam; it is understood that the high power pulse laser used in the present application may be directly roughened without cleaning when the displacement is inconsistent, resulting in an unclean surface after cleaning or oxide re-formation.

Preferably, the combining apparatus further includes a collimating module 30 disposed in front of the laser beam combining module 40 for collimating the light beams before combining the light beams so that the light beams are emitted in parallel.

On the other hand, the present embodiment provides a method for synthesizing laser beams with the same wavelength, in which three mutually independent laser beams with the same wavelength are emitted to act on the beam combining prism 41, the distance between the three input laser beams is adjusted by the beam combining prism 41, and three cleaning beams, a texturing beam, and a cleaning beam, which are sequentially arranged in front of and behind each other and act on the surface of the material to be processed, are output by the scanning and focusing module 50.

In the above embodiment, the distance between the laser texturing head 20 and the beam combining prism 41 is adjusted in accordance with the incident path distance of the cleaning beam, so that the displacement amounts of the emitted beams are made uniform.

In addition, the method also comprises the following steps: the incident light beam is collimated and adjusted before the laser beam is applied to the beam combining prism 41.

The laser beam combining method can adjust the distance between the laser beams emitted by the lasers with the same wavelength, and reduce the distance between the three groups of output laser beams as much as possible, so that the conversion time from the cleaning to the texturing and then to the cleaning process is greatly shortened, and the possibility of oxide generation is reduced.

The present invention is not limited to the above embodiments, and any embodiments mentioned in the description fall within the scope of the present invention.

The present invention has been described in terms of specific examples, which are provided to aid understanding of the invention and are not intended to be limiting. For a person skilled in the art to which the invention pertains, several simple deductions, modifications or substitutions may be made according to the idea of the invention.