CN114434808A - Method and device for welding transparent plastic and computer readable storage medium - Google Patents
Method and device for welding transparent plastic and computer readable storage medium Download PDFInfo
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
- B29C65/16—Laser beams
- B29C65/1629—Laser beams characterised by the way of heating the interface
- B29C65/1635—Laser beams characterised by the way of heating the interface at least passing through one of the parts to be joined, i.e. laser transmission welding
- B29C65/1638—Laser beams characterised by the way of heating the interface at least passing through one of the parts to be joined, i.e. laser transmission welding focusing the laser beam on the interface
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/90—Measuring or controlling the joining process
Abstract
The invention discloses a method and a device for welding transparent plastics and a computer readable storage medium, wherein the method comprises the following steps: placing transparent plastic on a welding platform; detecting a joint seam of the transparent material, and determining the region where the joint seam is located as a target welding region; and controlling the laser welding equipment to form a Bessel beam in the target welding area so as to complete the welding of the transparent material. The invention improves the welding quality of the transparent material.
Description
Technical Field
The present invention relates to the field of laser welding technologies, and in particular, to a method and an apparatus for welding transparent plastics, and a computer-readable storage medium.
Background
For the welding process of the plastic end face, the existing process needs to perform wedge-shaped treatment on the material end face of the plastic to be welded, the purpose is to increase the included angle between the laser incidence direction and the welded end face, and after the wedge-shaped end face is formed, the wedge-shaped end face needs to be well pressed, so that the complexity of a pressing jig is increased, and the welding quality is difficult to guarantee.
Disclosure of Invention
The embodiment of the invention provides a method and a device for welding transparent plastics and a computer readable storage medium, and aims to solve the technical problem of improving the welding quality of the transparent plastics.
The embodiment of the invention provides a welding method of transparent plastics, which comprises the following steps:
placing transparent plastic on a welding platform;
detecting a joint seam of the transparent material, and determining the region where the joint seam is located as a target welding region;
and controlling a laser welding device to form a Bessel beam in the target welding area so as to complete the welding of the transparent material.
In one embodiment, the step of controlling the laser welding apparatus to form the bessel beam at the target welding area includes:
and controlling the laser welding equipment to emit Gaussian light, wherein the Gaussian light is focused in the target welding area to form the Bessel light beam.
In one embodiment, the step of controlling the laser welding apparatus to emit gaussian light includes:
adjusting an axicon lens, a first focusing lens and a second focusing lens in the laser welding equipment according to the position of the target welding area;
and starting a Gaussian light source in the laser welding equipment to emit Gaussian light, wherein the Gaussian light is focused into the Bessel light beam in the target welding area when being sequentially incident to the axicon lens, the first focusing lens and the second focusing lens.
In one embodiment, the step of controlling the laser welding apparatus to emit gaussian light includes:
and controlling the laser welding equipment to emit the Gaussian light with the wavelength of 1900nm to 2100 nm.
In one embodiment, the width of the fitting seam is less than or equal to 20 mm.
In one embodiment, the step of controlling the laser welding apparatus to emit gaussian light includes:
and controlling the laser welding equipment to emit Gaussian light in a preset direction, wherein the preset direction is parallel to the joint seam.
In one embodiment, the step of placing the transparent plastic on the welding platform comprises:
and fixing the transparent plastic on the welding platform through a pressing fixture.
In one embodiment, the absorbances of the transparent plastics are the same.
The embodiment of the invention also provides a welding device for transparent plastics, which comprises: a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the steps of the method for welding transparent plastic as described above when executing the computer program.
Embodiments of the present invention also provide a computer-readable storage medium, on which a computer program is stored, and the computer program, when executed by a processor, implements the steps of the welding method for transparent plastics as described above.
In the technical scheme of the embodiment, the welding device for the transparent plastic places the transparent plastic on the welding platform; detecting a joint seam of the transparent material, and determining the region where the joint seam is located as a target welding region; and controlling a laser welding device to form a Bessel beam in the target welding area so as to complete the welding of the transparent material. The transparent plastic welding device controls the laser welding equipment to form the Bessel beam in the target welding area, and the characteristics of the Bessel beam determine that the focused beam has longer focal depth, the focused spot diameter is smaller, and the width of a welding seam is smaller, so that thicker transparent materials can be welded without wedge angle pretreatment, the complexity of a pressing fixture is reduced, and the welding quality of the transparent materials is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of a hardware architecture of a welding apparatus for transparent plastics according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart of a first embodiment of the method for welding transparent plastic according to the present invention;
FIG. 3 is a reference view of a first embodiment of the welding method of the transparent plastic of the present invention;
FIG. 4 is a reference view of a first embodiment of the welding method of the transparent plastic of the present invention;
FIG. 5 is a reference view of a first embodiment of the welding method of the transparent plastic of the present invention;
FIG. 6 is a reference drawing of a first embodiment of the method of welding the transparent plastic of the present invention;
FIG. 7 is a schematic flow chart of a second embodiment of the method for welding transparent plastic according to the present invention;
FIG. 8 is a schematic flow chart of a third embodiment of the method for welding transparent plastic according to the present invention;
FIG. 9 is a reference view of a third embodiment of the method of welding the transparent plastic of the present invention;
FIG. 10 is a reference view of a third embodiment of the method of welding the transparent plastic of the present invention;
fig. 11 is a reference view showing a third embodiment of the welding method of the transparent plastic according to the present invention.
Detailed Description
For a better understanding of the above technical solutions, exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
The main solution of the invention is: the welding device for the transparent plastic places the transparent plastic on the welding platform; detecting a joint seam of the transparent material, and determining the region where the joint seam is located as a target welding region; and controlling a laser welding device to form a Bessel beam in the target welding area so as to complete the welding of the transparent material.
The transparent plastic welding device controls the laser welding equipment to form the Bessel beam in the target welding area, and the characteristics of the Bessel beam determine that the focused beam has longer focal depth, the focused spot diameter is smaller, and the width of a welding seam is smaller, so that thicker transparent materials can be welded without wedge angle pretreatment, the complexity of a pressing fixture is reduced, and the welding quality of the transparent materials is improved.
As an implementation, the welding device of the transparent plastic can be as shown in fig. 1.
The embodiment of the invention relates to a welding device for transparent plastics, which comprises: a processor 101, e.g. a CPU, a memory 102, a communication bus 103. Wherein a communication bus 103 is used for enabling the connection communication between these components.
The memory 102 may be a high-speed RAM memory or a non-volatile memory (e.g., a disk memory). As in fig. 1, a detection program may be included in the memory 103 as a computer-readable storage medium; and the processor 101 may be configured to call the detection program stored in the memory 102 and perform the following operations:
placing transparent plastic on a welding platform;
detecting a joint seam of the transparent material, and determining the region where the joint seam is located as a target welding region;
and controlling a laser welding device to form a Bessel beam in the target welding area so as to complete the welding of the transparent material.
In one embodiment, the processor 101 may be configured to call a detection program stored in the memory 102 and perform the following operations:
and controlling the laser welding equipment to emit Gaussian light, wherein the Gaussian light is focused in the target welding area to form the Bessel light beam.
In one embodiment, the processor 101 may be configured to call a detection program stored in the memory 102 and perform the following operations:
adjusting an axicon lens, a first focusing lens and a second focusing lens in the laser welding equipment according to the position of the target welding area;
and starting a Gaussian light source in the laser welding equipment to emit Gaussian light, wherein the Gaussian light is focused into the Bessel light beam in the target welding area when being sequentially incident to the axicon lens, the first focusing lens and the second focusing lens.
In one embodiment, the processor 101 may be configured to call a detection program stored in the memory 102 and perform the following operations:
and controlling the laser welding equipment to emit the Gaussian light with the wavelength of 1900nm to 2100 nm.
In one embodiment, the processor 101 may be configured to call a detection program stored in the memory 102 and perform the following operations:
and controlling the laser welding equipment to emit Gaussian light in a preset direction, wherein the preset direction is parallel to the joint seam.
In one embodiment, the processor 101 may be configured to call a detection program stored in the memory 102 and perform the following operations:
and fixing the transparent plastic on the welding platform through a pressing fixture.
In the technical scheme of the embodiment, the welding device for the transparent plastic places the transparent plastic on the welding platform; detecting a joint seam of the transparent material, and determining the region where the joint seam is located as a target welding region; and controlling a laser welding device to form a Bessel beam in the target welding area so as to complete the welding of the transparent material. The transparent plastic welding device controls the laser welding equipment to form the Bessel beam in the target welding area, and the characteristics of the Bessel beam determine that the focused beam has longer focal depth, the focused spot diameter is smaller, and the width of a welding seam is smaller, so that thicker transparent materials can be welded without wedge angle pretreatment, the complexity of a pressing fixture is reduced, and the welding quality of the transparent materials is improved.
In order to better understand the technical solution, the technical solution will be described in detail with reference to the drawings and the specific embodiments.
Referring to fig. 2, fig. 2 is a first embodiment of the welding method of the transparent plastic of the present invention, the method comprising the steps of:
step S10, placing a transparent plastic on the welding platform.
Laser devices can be divided into three major categories: laser marking machine, laser-beam welding machine, laser cutting machine. The laser marking machine comprises a semiconductor laser marking machine, a CO2 laser marking machine, a fiber laser marking machine, an ultraviolet laser marking machine and the like; the laser welding machine comprises a YAG laser automatic welding machine, an optical fiber transmission automatic laser welding machine and the like at present; the laser cutting machine includes a YAG laser cutting machine, an optical fiber laser cutting machine, and the like. The laser welding machine is preferably selected in the embodiment, the laser welding can be realized by adopting continuous or pulse laser beams, and the principle of the laser welding can be divided into heat conduction type welding and laser deep melting welding. The power density is less than 10^10W/cm2The welding is heat conduction welding, and the welding depth is shallow and the welding speed is slow; the power density is more than 10^10W/cm2When the method is used, the metal surface is recessed into 'holes' under the action of heat to form deep fusion welding, and the method has the characteristics of high welding speed and large depth-to-width ratio. The heat conduction type laser welding principle is that laser radiation heats a surface to be processed, surface heat is diffused inwards through heat conduction, and a workpiece is melted by controlling laser parameters such as the width, energy, peak power, repetition frequency and the like of laser pulse to form a specific molten pool. Laser welding for gear welding and metallurgical sheet welding mainly involves laser deep fusion welding. Laser deep melting welding generally adopts continuous laser beams to complete material connection, the metallurgical physical process of the laser deep melting welding is very similar to electron beam welding, and an energy conversion mechanism is realized by small holes"(Key-hole) structure. Under the irradiation of laser with high enough power density, the material is vaporized and forms pores. The vapor filled aperture acts as a black body and absorbs substantially all of the incident beam energy, the equilibrium temperature in the cavity is about 2500 degrees celsius, and heat is transferred from the outer wall of the high temperature cavity to melt the metal surrounding the cavity. The pores are filled with high-temperature steam generated by continuous evaporation of the wall material under the irradiation of the light beam, the walls of the pores surround the molten metal, and the liquid metal surrounds the solid material (whereas in most conventional welding processes and laser conduction welding, energy is firstly deposited on the surface of the workpiece and then is transferred to the inside). The liquid flow outside the pore wall and the surface tension of the wall layer are in accordance with the steam pressure continuously generated in the pore cavity and keep dynamic balance. The light beam continuously enters the small hole, the material outside the small hole continuously flows, and the small hole is always in a flowing stable state along with the movement of the light beam. That is, the keyhole and the molten metal surrounding the keyhole wall move forward with the forward velocity of the pilot beam, and the molten metal fills the void left by the removal of the keyhole and condenses with it, and a weld is formed. All of the above processes occur so fast that the welding speed can easily reach meters per minute.
The basic principle of plastic welding belongs to the field of thermal welding, namely, plastic absorbs part of energy injected by laser and converts the energy into heat energy to achieve the purpose of welding, so that certain plastic plays a crucial role in the welding effect on the absorption rate of different wavelengths, the thickness of materials, the color and the surface texture of the plastic, and the transmittance of different plastic materials under different wavelengths is shown in fig. 3.
In the plastic welding process, the commonly used laser wavelength is 808nm, 915nm, 976nm and the like (the wavelength range is 800nm-1100nm), and the absorptivity of most plastics in the wavelength band is low, so that in order to successfully melt and weld the thermoplastic plastics by laser, the absorptivity must be increased by additives such as pigment or carbon black. It is therefore now common practice to have one component part of a clear plastic and one part of an absorbable plastic (darker in color or with the addition of an infrared absorber). With this welding method, the laser beam can penetrate through the transparent plastic of the upper layer and reach the bottom layer of the absorbable plastic. The laser then melts the surface of the resorbable plastic and the bottom of the transparent component melts due to heat transfer. For opaque parts, an aesthetically pleasing but invisible weld is in fact created, and common welding processes include stitch welding and end face welding as shown in fig. 4.
With the continuous acceleration of the development and industrialization steps of various thulium-doped fiber lasers with the wavelength of 2 microns, a brand-new solution is brought to plastic welding, particularly transparent plastic welding, as can be seen from fig. 3, the absorptivity of most plastic materials to the wavelength of 1900nm-2100nm is between that of infrared (750nm-1100nm) and that of CO2(10.6 microns), the absorptivity of materials such as PMMA, PP, PC is between 25% and 40%, and can be as high as 70% for PA6, therefore, the laser with the wavelength of 2.0 microns has good balance between laser energy absorption and energy transmission for the plastic materials, the beam diameter falling on the upper surface of a workpiece is far larger than the spot of a focus through the selection of beam quality and the adjustment of the focal depth, and when the laser passes through the upper workpiece, the beam diameter is larger, so the energy density is not enough to melt the upper workpiece, the focus of the laser is located at the welding seam, and due to the fact that the focus has enough energy density and the combination contact surface of the workpiece forms a steep drop of the refractive index, the energy gathering effect is easy to generate, and the molten plastic completes welding as shown in figure 5.
However, for the plastic end face welding process in fig. 4 and 5, the existing welding process needs to perform wedge-shaped processing on the end face of the material to be welded, which is to increase the included angle between the laser incident direction and the end face to be welded, improve the absorption efficiency of the end face, and achieve the purpose of welding, and the specific content is as shown in fig. 6, which not only increases the cost for the welding process, but also seriously affects the welding quality due to the quality of the wedge-shaped end face processing process. But also increases the complexity of the pressure fixture.
In this embodiment, the transparent plastic may be a transparent material without wedge-shaped pretreatment, and the welding platform is a platform for placing the transparent material to be welded, which is disposed on the welding device for the transparent plastic.
Optionally, the transparent plastic is fixed on the welding platform through a pressing fixture.
And step S20, detecting the joint seam of the transparent material, and determining the area where the joint seam is located as a target welding area.
In this embodiment, the joint seam of the transparent material may be understood as a welding area, and it is easy to understand that, under the condition of having no requirement on a welding angle, the joint seam may be as small as possible, the area of the welding area is reduced, and the area needing to be welded may be reduced, thereby improving the welding quality.
And step S30, controlling the laser welding equipment to form a Bessel beam in the target welding area so as to complete the welding of the transparent material.
In the embodiment, the welding head adopted by the controlled laser welding equipment is a Bessel welding head, and the end face of the transparent plastic is directly welded by combining a laser light source with the wavelength of 1900nm-2100 nm.
Optionally, the absorbances of the transparent plastics are the same. The control of the same light absorption rate of the transparent plastic to be welded can prevent the sub-materials from respectively reacting differently under the condition that the transparent plastic to be welded has the sub-materials with different light absorption rates, thereby ensuring higher welding quality of the transparent plastic.
Optionally, the welding may be performed by using a welding head and moving an XY table, or by using a bessel beam galvanometer method.
In the technical scheme of this embodiment, because the welding set of transparent plastics has controlled laser welding equipment and has formed the Bessel light beam in the target welding region, and the characteristics of Bessel light beam have decided that the light beam after the focus has longer depth of focus, and the facula diameter after the focus is less moreover, and the welding seam width is less, consequently, can weld thicker transparent material, need not to carry out wedge angle preliminary treatment, has reduced the complexity of pressfitting tool to transparent material's welding quality has been improved.
Referring to fig. 7, fig. 7 is a second embodiment of the welding method of the transparent plastic according to the present invention, and step S30 includes:
and step S31, controlling laser welding equipment to emit Gaussian light, wherein the Gaussian light is focused in the target welding area to form the Bessel beam.
In this embodiment, the gaussian light emitted from the laser welding apparatus is focused to obtain a bessel beam.
Optionally, the laser welding device is controlled to emit the gaussian light with a wavelength of 1900nm to 2100 nm. The Bessel beam is combined with a laser source with the wavelength of 1900nm-2100nm, the end face of transparent plastic with thicker thickness (up to 20mm) can be directly welded, and wedge-shaped surface pretreatment is not needed. And the welding seam is narrower, the welding is smooth, the welding efficiency is high, and the welding strength is high.
Optionally, the width of the fitting seam is less than or equal to 20 mm. The width of the joint seam is controlled, so that the joint seam appears under the condition of poor welding quality caused by large joint seam.
In the technical scheme of the embodiment, compared with the prior art, when the transparent plastic end face is welded, wedge-shaped treatment is not required to be carried out on the plastic end face, so that the cost of welding the plastic end face is greatly reduced, and the welding process is simplified. When the transparent plastic end face is welded, the incident angle of the laser is not required to be adjusted, and the focus of the laser is not required to be adjusted, so that the welding speed is greatly improved. When the transparent plastic end face is welded, the Bessel light spot is adopted for welding, so that the laser is uniformly absorbed by the welding end face, the consistency and quality of the welding line are greatly improved, and the product yield is greatly improved.
Referring to fig. 8, fig. 8 is a third embodiment of the welding method of the transparent plastic according to the present invention, and step S31 includes:
step 311, adjusting the axicon lens, the first focusing lens and the second focusing lens in the laser welding device according to the position of the target welding area.
Step S312, turning on a gaussian light source in the laser welding device to emit gaussian light, where the gaussian light is focused into the bessel beam in the target welding area when sequentially entering the axicon lens, the first focusing lens and the second focusing lens.
In the present embodiment, the bessel beam is formed by making a common gaussian beam incident on the axicon lens, and focusing the bessel beam formed by the gaussian beam (as shown in fig. 10) through the lens group (as shown in fig. 9), and the wedge angle is usually not more than 30 degrees. Compared with the common Gaussian spot, the Bessel light spot beam has the characteristics of small light spot diameter and long focusing focal depth.
In the technical scheme of this embodiment, the bessel beam and the common gaussian spot are different in welding the transparent material. Under the condition of ensuring a certain energy density, the focal depth of a focused light spot is generally small (generally not more than 1mm), a focusing lens with a longer focal length is adopted to obtain a longer focal depth, so that the energy density is greatly reduced, the welding depth of the light spot is very limited, the width of a welding seam is wider (as shown in a in figure 11), the characteristics of a Bessel light beam determine that the focused light beam has a longer focal depth (as 10mm), the diameter of the focused light spot is smaller (generally smaller than 5mm), and the width of the welding seam is smaller, so that a thicker transparent material can be welded without wedge angle pretreatment (as shown in b in figure 11).
To achieve the above object, an embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, implements the steps of the welding method of transparent plastic as described above.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It should be noted that in the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The usage of the words first, second and third, etcetera do not indicate any ordering. These words may be interpreted as names.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the invention without departing from the invention
With clear spirit and scope. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A method for welding transparent plastic, characterized in that the method comprises the following steps:
placing transparent plastic on a welding platform;
detecting a joint seam of the transparent material, and determining the area where the joint seam is located as a target welding area;
and controlling a laser welding device to form a Bessel beam in the target welding area so as to complete the welding of the transparent material.
2. The welding method of transparent plastics according to claim 1, wherein the step of controlling the laser welding apparatus to form a bessel beam at the target welding area comprises:
and controlling the laser welding equipment to emit Gaussian light, wherein the Gaussian light is focused in the target welding area to form the Bessel light beam.
3. The method for welding transparent plastics according to claim 2, wherein the step of controlling the laser welding apparatus to emit gaussian light comprises:
adjusting an axicon lens, a first focusing lens and a second focusing lens in the laser welding equipment according to the position of the target welding area;
and starting a Gaussian light source in the laser welding equipment to emit Gaussian light, wherein the Gaussian light is focused into the Bessel light beam in the target welding area when being sequentially incident to the axicon lens, the first focusing lens and the second focusing lens.
4. The method for welding transparent plastics according to claim 2, wherein the step of controlling the laser welding apparatus to emit gaussian light comprises:
and controlling the laser welding equipment to emit the Gaussian light with the wavelength of 1900nm to 2100 nm.
5. The method for welding transparent plastic according to claim 4, wherein the width of the fitting seam is 20mm or less.
6. The method for welding transparent plastics according to claim 2, wherein the step of controlling the laser welding apparatus to emit gaussian light comprises:
and controlling the laser welding equipment to emit Gaussian light in a preset direction, wherein the preset direction is parallel to the joint seam.
7. The method of welding transparent plastic as defined in claim 1, wherein said step of placing transparent plastic on a welding platform includes:
and fixing the transparent plastic on the welding platform through a pressing fixture.
8. The method for welding transparent plastics according to claim 1, wherein the absorbances of the transparent plastics are the same.
9. A welding device for transparent plastic, comprising: memory, processor and computer program stored on the memory and executable on the processor, which when executed by the processor implements the steps of the method for welding transparent plastic according to any one of claims 1 to 8.
10. A computer-readable storage medium, characterized in that a computer program is stored thereon, which computer program, when being executed by a processor, carries out the steps of the method for welding of transparent plastic material according to one of the claims 1 to 6.
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