CN114074431A - Plastic laser welding method, system, computer device and storage medium - Google Patents
Plastic laser welding method, system, computer device and storage medium Download PDFInfo
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- CN114074431A CN114074431A CN202010813953.5A CN202010813953A CN114074431A CN 114074431 A CN114074431 A CN 114074431A CN 202010813953 A CN202010813953 A CN 202010813953A CN 114074431 A CN114074431 A CN 114074431A
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- 238000003466 welding Methods 0.000 title claims abstract description 106
- 229920003023 plastic Polymers 0.000 title claims abstract description 56
- 239000004033 plastic Substances 0.000 title claims abstract description 56
- 238000000034 method Methods 0.000 title claims abstract description 40
- 238000003860 storage Methods 0.000 title abstract description 13
- 239000000463 material Substances 0.000 claims abstract description 102
- 238000010438 heat treatment Methods 0.000 claims abstract description 7
- 238000003825 pressing Methods 0.000 claims abstract description 7
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 4
- 230000001678 irradiating effect Effects 0.000 claims description 4
- 230000003287 optical effect Effects 0.000 claims description 3
- 239000004065 semiconductor Substances 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 claims 1
- 238000004590 computer program Methods 0.000 description 11
- 230000008569 process Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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
- B29C65/1645—Laser beams characterised by the way of heating the interface heating both sides of the joint, e.g. by using two lasers or a split beam
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
- B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
- B23K26/064—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms
- B23K26/0643—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms comprising mirrors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
- B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
- B23K26/067—Dividing the beam into multiple beams, e.g. multifocusing
- B23K26/0676—Dividing the beam into multiple beams, e.g. multifocusing into dependently operating sub-beams, e.g. an array of spots with fixed spatial relationship or for performing simultaneously identical operations
-
- 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
- B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
- B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
- B29C66/45—Joining of substantially the whole surface of the articles
-
- 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
- B29C66/96—Measuring or controlling the joining process characterised by the method for implementing the controlling of the joining process
- B29C66/967—Measuring or controlling the joining process characterised by the method for implementing the controlling of the joining process involving special data inputs or special data outputs, e.g. for monitoring purposes
- B29C66/9674—Measuring or controlling the joining process characterised by the method for implementing the controlling of the joining process involving special data inputs or special data outputs, e.g. for monitoring purposes involving special data outputs, e.g. special data display means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/30—Organic material
- B23K2103/42—Plastics
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2009/00—Layered products
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Plasma & Fusion (AREA)
- Health & Medical Sciences (AREA)
- Electromagnetism (AREA)
- Toxicology (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
The invention discloses a plastic laser welding method, a plastic laser welding system, computer equipment and a storage medium. The method comprises the steps that after an instruction for laser welding of a plastic part to be welded is received, a laser is controlled to emit laser beams; the plastic part to be welded comprises an upper layer material and a lower layer material; the laser beam emitted by the laser is totally reflected to a preset light splitting device through the first total reflection lens, and the laser beam is split into a first beam and a second beam through the preset light splitting device; heating a first welding position of the upper layer material to a molten state by irradiation of a first light beam, and heating a second welding position of the lower layer material to a molten state by irradiation of a second light beam; and pressing the lower layer material and the upper layer material to weld the first welding position and the second welding position in a molten state. The invention reduces the number of lasers required by laser welding, reduces the cost and improves the laser welding speed and the welding quality.
Description
Technical Field
The invention relates to the technical field of laser welding, in particular to a plastic laser welding method, a plastic laser welding system, computer equipment and a storage medium.
Background
With the development of scientific technology, laser welding technology is gradually developed. The plastic laser welding method in the laser welding technology has no scraps and vibration in the welding process, and has important application in methods of automobiles, medical treatment, electronics and the like.
In the prior art, two lasers and two sets of external light path devices are required for the condition that the upper and lower layer materials of the plastic part are made of opaque materials, so that two beams of laser are emitted simultaneously to stagger and heat the welding positions of the upper and lower layers respectively until the welding positions are molten, and then the upper and lower layer materials are moved to perform pressing and cooling to realize welding. However, in the process of moving the upper and lower layer materials to perform lamination, the welding position cannot be guaranteed to be continuously in a molten state, so that the welding quality may be low, and the two lasers and the two sets of external light path devices are adopted, so that the equipment cost is high, and when different plastics are treated, the parameters of the two lasers and the two sets of external light path devices need to be adjusted simultaneously, so that the welding efficiency is low.
Disclosure of Invention
The embodiment of the invention provides a plastic laser welding method, a plastic laser welding system, computer equipment and a storage medium, and aims to solve the problems of low welding quality, low welding efficiency and high equipment cost.
A plastic laser welding method comprising:
after receiving an instruction of laser welding a plastic part to be welded, controlling a laser to emit a laser beam; the plastic part to be welded comprises an upper layer material and a lower layer material;
the method comprises the steps that a laser beam emitted by a laser is totally reflected to a preset light splitting device through a first total reflection lens, and the laser beam is divided into a first beam and a second beam through the preset light splitting device;
heating a first welding location of the upper layer material to a molten state by irradiation of the first beam, while heating a second welding location of the lower layer material to a molten state by irradiation of the second beam;
and pressing the lower layer material and the upper layer material to weld the first welding position and the second welding position in a molten state.
A plastic laser welding system includes a controller for performing the plastic laser welding method.
A computer device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, the processor implementing the plastic laser welding method when executing the computer program.
A computer-readable storage medium, which stores a computer program that, when executed by a processor, implements the plastic laser welding method described above.
According to the plastic laser welding method, the plastic laser welding system, the computer device and the storage medium, the preset light splitting device is used for splitting the laser beam into the first beam for welding the upper layer material and the second beam for welding the lower layer material, namely, the distributed welding can be realized through the single laser device, the first full-reflection lens and the preset light splitting device, the number of lasers required by laser welding is reduced (if two lasers are needed in the prior art, one laser beam is respectively emitted to the upper layer material, and the other laser beam is emitted to the lower layer material), and the cost is reduced. Meanwhile, the first light beam can be used for welding the upper layer material, and the second light beam can be used for welding the lower layer material, so that the movement of a laser is reduced, and the laser welding speed is improved; the first welding position and the second welding position are heated to be in a molten state and then are directly pressed, so that the welding quality is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor.
FIG. 1 is a flow chart of a method of laser welding plastic material in accordance with an embodiment of the present invention;
FIG. 2 is a schematic diagram of an optical path of a plastic laser welding method according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a computer device according to an embodiment of the invention.
Wherein, each reference mark in the figure is:
1-a first total reflection lens; 2-semi-reflective lens; 3-a second total reflection lens; 4, a transparent fixed plate; 5-upper layer material; 6-lower layer material; 7-laser beam.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In one embodiment, as shown in fig. 1 and 2, there is provided a plastic laser welding method comprising the steps of:
s10: after receiving an instruction of laser welding of the plastic part to be welded, controlling a laser to emit a laser beam 7; the plastic parts to be welded comprise an upper layer of material 5 and a lower layer of material 6.
The plastic parts to be welded comprise an upper layer material 5 and a lower layer material 6, the plastic parts to be welded can be arranged according to requirements, preferably, opaque plastic parts are selected as the plastic parts to be welded in the invention, namely, the upper layer material 5 and the lower layer material 6 are both opaque plastic parts, and the diameter of the upper layer material 5 and the diameter of the lower layer material 6 can be the same or different. Further, the upper layer material 5 may be fixed by an acrylic light-transmitting material so that the laser beam 7 penetrates through the acrylic light-transmitting material to the upper layer material 5, or a fixing mechanism may be disposed above the upper layer material 5 so as to fix the upper layer material 5; the lower layer of material 6 may be secured using a securing base.
Further, after the opaque plastic part is selected as the plastic part to be welded, preferably, the power device is a power semiconductor laser, the power range of the laser is 300W-1000W, and the wavelength of a laser beam 7 emitted by the laser is 915 nm. Further, a high-speed galvanometer (optionally, the scanning speed of the high-speed galvanometer is 1000mm/s to 8000mm/s) is configured on the laser to perform welding on a plastic part to be welded in a fast scanning manner, and a galvanometer field lens with a telecentric lens is further configured to ensure that a laser beam 7 emitted by the laser is vertically emitted to the first all-reflection lens 1.
S20: the laser beam 7 emitted by the laser is totally reflected to the preset light splitting device through the first total reflection lens 1, and the laser beam 7 is divided into a first beam and a second beam through the preset light splitting device.
The following is described according to the schematic diagram of the optical path shown in fig. 2:
the reflective surface of the first total reflection lens 1 is located on the light path of the laser beam 7 emitted from the laser, optionally, the first total reflection lens 1 is placed at 45 degrees, further, the first total reflection lens 1 is horn-shaped, and the diameter of the horn-shaped first total reflection lens 1 gradually increases from the end connected with the transparent fixing plate 4 toward the end far away from the transparent fixing plate 4. Preferably, the reflection surface of the first total reflection mirror 1 is a flat surface on any cross section including the central axis of the trumpet-shaped first total reflection mirror 1.
Further, the predetermined light splitting device includes a transparent fixing plate 4, the transparent fixing plate 4 is a circular ring-shaped transparent acrylic plate coaxially disposed with the first all-reflective lens 1, and in order to avoid touching the transparent fixing plate 4 when the lower layer material 6 and the upper layer material 5 are pressed in step S40, the inner diameter of the transparent fixing plate 4 should be larger than the diameters of the upper layer material 5 and the lower layer material 6 of the plastic part to be welded.
Further, predetermine light splitting equipment and still include half anti-lens 2, this half anti-lens 2 is the loudspeaker form, and the diameter of the half anti-lens 2 of loudspeaker form is crescent to the one end of keeping away from transparent fixed plate 4 from the one end of connecting transparent fixed plate 4, and this half anti-lens 2 and first complete anti-lens 1 coaxial setting to first complete anti-lens 1 and half anti-lens 2 all set up the up end at transparent fixed plate 4. Alternatively, the angle between the half mirror 2 and the transparent fixing plate 4 is typically set to 30 ° to 60 °, and the angle is set in relation to the distance between the half mirror and the plastic part to be welded, and in relation to the distance between the upper layer 5 and the lower layer 6. Preferably, in any cross section including the central axis of the trumpet-shaped half mirror 2, both of the two opposing reflection surfaces of the half mirror 2 are flat surfaces.
Furthermore, the preset light splitting equipment also comprises a second total reflection lens 3, the second total reflection lens 3 is horn-shaped, and the diameter of the horn-shaped second total reflection lens 3 is gradually increased from one end of the horn-shaped second total reflection lens, which is connected with the transparent fixing plate 4, and is far away from one end of the transparent fixing plate 4; the second total reflection lens 3 and the first total reflection lens 1 are coaxially arranged, and the reflection surface of the first total reflection lens 1 is parallel to and opposite to the reflection surface of the second total reflection lens 3. Optionally, the angle between the second all-lens 3 and the transparent fixing plate 4 is generally set to be 30 ° to 60 °, and the angle is set according to the distance between the second all-lens 3 and the plastic part to be welded and also according to the distance between the upper layer material 5 and the lower layer material 6. Preferably, the reflection surface of the second total reflection mirror 3 is a flat surface on any cross section including the center axis of the second total reflection mirror 3 in the horn shape.
Preferably, the first total reflection lens 1 and the predetermined light splitting device are both located between the upper layer material 5 and the lower layer material 6. If the first fully-reflective lens 1 and the predetermined light splitting device are located at a position parallel to the lower material layer 6, the second fully-reflective lens 3 may be cancelled (that is, the second fully-reflective lens 3 is not provided, or, in the case of providing the second fully-reflective lens 3, the placement angle of the semi-reflective lens 2 and/or the second fully-reflective lens 3 is adjusted, so that after the laser beam 7 is divided into the first beam and the second beam by the semi-reflective lens 2 of the predetermined light splitting device, the first beam irradiates the welding position of the upper material layer 5 at a certain angle, and the second beam may irradiate the welding position of the lower material layer 6 in parallel). Similarly, when the first total-reflection lens 1 and the preset splitting device are located at a position parallel to the upper layer material 5, the second total-reflection lens 3 may be cancelled correspondingly (that is, the second total-reflection lens 3 is not provided, or, in the case that the second total-reflection lens 3 is provided, by adjusting the placement angle of the half-reflection lens 2 and/or the second total-reflection lens 3, the laser beam 7 is divided into the first beam and the second beam by the half-reflection lens 2 of the preset splitting device (optionally, the laser energy of the first beam and the laser energy of the second beam are equal, so that the laser energy irradiated to the upper layer material and the laser energy irradiated to the lower layer material are equal, and further, the melting state of the welding position is kept consistent, thereby facilitating the welding of the first beam and the second beam, and improving the welding quality), after the first beam is irradiated to the welding position of the upper layer material 5 in parallel, and the second beam may be irradiated to the welding position of the lower layer material 6 at a certain angle).
Specifically, after the laser is controlled to emit a laser beam 7, the laser beam 7 passes through a galvanometer field lens comprising a telecentric lens on the laser, and the laser beam 7 vertically irradiates the first total reflection lens 1; the first total-reflection lens 1 totally reflects the laser beam 7 to a preset light splitting device, the laser beam 7 totally reflected by the first total-reflection lens 1 irradiates to a semi-reflection lens 2 in the preset light splitting device along a direction parallel to the transparent fixing plate 4, and then the laser beam 7 is divided into a first beam irradiating to the upper layer material 5 through the semi-reflection lens 2, and a second beam firstly penetrates through the semi-reflection lens 2 and then irradiates to the lower layer material 6 after penetrating through the transparent fixing plate 4.
Further, the predetermined light splitting device further includes a second total reflection lens 3, so that after the second light beam is separated by the half-reflection lens 2, the second light beam irradiates the second total reflection lens 3 along a direction parallel to the transparent fixing plate 4, and after being totally reflected by the second total reflection lens 3, the second light beam irradiates the lower layer material 6 through the transparent fixing plate 4.
S30: the first welding position of the upper layer material 5 is heated to a molten state by the irradiation of the first beam, and at the same time, the second welding position of the lower layer material 6 is heated to a molten state by the irradiation of the second beam.
Specifically, after a laser beam 7 emitted by a laser is totally reflected to a preset light splitting device through a first totally reflecting lens 1, the laser beam 7 is split into a first beam and a second beam through the preset light splitting device, and a first welding position of an upper layer material 5 is heated to a molten state through irradiation of the first beam; at the same time, the second welding position of the lower layer material 6 is heated to a molten state by the irradiation of the second beam.
Further, when a high-speed galvanometer on the laser performs high-speed scanning according to the circular track of the upper layer material 5 or the lower layer material 6, after the laser beam 7 emitted by the laser realizes the light path of the steps S10-S30, the laser beam 7 emitted by the laser is continuously totally reflected to a preset light splitting device through the first totally reflecting lens 1, and the laser beam 7 is split into a first beam and a second beam through the preset light splitting device, so that the first beam continuously irradiates the first welding position of the upper layer material 5, the first beam is absorbed at the first welding position, the temperature is raised and the first beam is melted, and the laser beam is scanned for multiple times until the laser beam is in a melting state; and continuously irradiating a second welding position of the lower layer material 6 by the second light beam, absorbing the second light beam at the second welding position, heating and melting, and scanning by laser for multiple times until the second light beam is in a molten state.
S40: and pressing the lower layer material 6 and the upper layer material 5 to weld the first welding position and the second welding position in a molten state.
Specifically, after the first welding position of the upper layer material 5 is heated to a molten state by the irradiation of the first light beam, and the second welding position of the lower layer material 6 is heated to a molten state by the irradiation of the second light beam, the lower layer material 6 is jacked up by the cylinder jig, so that the lower layer material 6 and the upper layer material 5 are pressed in the annular inner space of the transparent fixing plate 4, and the first welding position and the second welding position in the molten state are cooled under the action of pressure, so that effective welding is realized.
In this embodiment, divide into laser beam 7 through predetermineeing beam splitting equipment and carry out welded first light beam and carry out welded second light beam to lower floor's material 6 to upper strata material 5, also can realize the distributed welding through single laser equipment, first totally reflecting lens 1 and predetermine beam splitting equipment, reduce when needing to carry out synchronous processing to upper strata material and lower floor's material in step, the required laser instrument quantity of laser welding, the welded synchronism has been promoted, the cost is reduced. Meanwhile, the first light beam can be used for welding the upper layer material 5, and the second light beam can be used for welding the lower layer material 6, so that the movement of a laser is reduced, and the laser welding speed is increased; the first welding position and the second welding position are heated to be in a molten state and then are directly pressed, so that the welding quality is improved.
It should be understood that, the sequence numbers of the steps in the foregoing embodiments do not imply an execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.
In an embodiment, there is provided a plastic laser welding system including a controller for performing the plastic laser welding method in the above-described embodiment.
In one embodiment, a computer device is provided, which may be a server, the internal structure of which may be as shown in fig. 3. The computer device includes a processor, a memory, a network interface, and a database connected by a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program, and a database. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The network interface of the computer device is used for communicating with an external terminal through a network connection. The computer program is executed by a processor to implement a plastic laser welding method.
In one embodiment, a computer device is provided, which comprises a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor executes the computer program to implement the plastic laser welding method in the above-mentioned embodiments.
In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored, which computer program, when being executed by a processor, realizes the plastic laser welding method in the above-mentioned embodiments.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, storage, database, or other medium used in the embodiments provided herein may include non-volatile and/or volatile memory, among others. Non-volatile memory can include read-only memory (ROM), Programmable ROM (PROM), Electrically Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDRSDRAM), Enhanced SDRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), Rambus Direct RAM (RDRAM), direct bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-mentioned division of the functional units and modules is illustrated, and in practical applications, the above-mentioned function distribution may be performed by different functional units and modules according to needs, that is, the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-mentioned functions.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.
Claims (10)
1. A plastic laser welding method, comprising:
after receiving an instruction of laser welding a plastic part to be welded, controlling a laser to emit a laser beam; the plastic part to be welded comprises an upper layer material and a lower layer material;
the method comprises the steps that a laser beam emitted by a laser is totally reflected to a preset light splitting device through a first total reflection lens, and the laser beam is divided into a first beam and a second beam through the preset light splitting device;
heating a first welding location of the upper layer material to a molten state by irradiation of the first beam, while heating a second welding location of the lower layer material to a molten state by irradiation of the second beam;
and pressing the lower layer material and the upper layer material to weld the first welding position and the second welding position in a molten state.
2. The plastic laser welding method of claim 1, wherein the reflective surface of the first all-mirror plate is positioned in an optical path of the laser beam emitted from the laser.
3. The plastic laser welding method of claim 1, wherein the predetermined beam splitting device comprises a transparent fixing plate and a semi-reflective mirror plate; the semi-reflective lens and the first full-reflective lens are both arranged on the upper end surface of the transparent fixing plate;
the laser beam total reflection to predetermineeing beam splitting equipment through first total reflection lens with laser instrument transmission, through predetermine beam splitting equipment will laser beam divides into first light beam and second light beam, includes:
the laser beam after the total reflection of the first total reflection lens irradiates to the semi-reflection lens along the direction parallel to the transparent fixed plate, and is divided into a first beam irradiating to the upper layer material and a second beam irradiating to the lower layer material through the transparent fixed plate by the semi-reflection lens.
4. The plastic laser welding method according to claim 3, wherein the predetermined splitting apparatus further comprises a second all-reflection mirror disposed on an upper end surface of the transparent fixing plate, the second all-reflection mirror being located on a side of the splitting mirror away from the first all-reflection mirror; and the second light beam separated from the semi-reflective lens passes through the transparent fixing plate after being totally reflected by the second totally-reflective lens and then irradiates the lower layer material.
5. The plastic laser welding method as claimed in claim 4, wherein the first full-reflection lens is flared, and the diameter of the flared first full-reflection lens gradually increases from the end connected with the transparent fixing plate to the end far away from the transparent fixing plate.
6. The plastic laser welding method as claimed in claim 5, wherein the second total reflection lens is trumpet-shaped, and the diameter of the trumpet-shaped second total reflection lens gradually increases from the end connected with the transparent fixed plate to the end far away from the transparent fixed plate;
the first total reflection lens and the second total reflection lens are coaxially arranged; and the reflecting surface of the first total reflection lens and the reflecting surface of the second total reflection lens are parallel and are arranged oppositely.
7. The plastic laser welding method as claimed in claim 5, wherein the half mirror is trumpet-shaped, and the diameter of the trumpet-shaped half mirror is gradually increased from the end connected with the transparent fixed plate to the end far away from the transparent fixed plate; the first total reflection lens and the semi-reflection lens are coaxially arranged;
the second light beam separated by the semi-reflective lens irradiates to the second total-reflective lens along the direction parallel to the transparent fixed plate, and after being totally reflected by the second total-reflective lens, the second light beam penetrates through the transparent fixed plate to irradiate to the lower layer material.
8. The plastic laser welding method of claim 5, wherein the upper layer material and the lower layer material are both circular opaque plastic, and the upper layer material and the lower layer material are parallel and are both coaxially disposed with the first all-reflective mirror; and the first total reflection lens and the preset light splitting equipment are positioned between the upper layer material and the lower layer material.
9. The plastic laser welding method according to claim 8, wherein the transparent fixing plate is a circular ring-shaped transparent acrylic plate coaxially disposed with the first all-mirror plate; the inner diameter of the transparent fixed plate is larger than the diameters of the upper layer material and the lower layer material;
the step of pressing the lower layer material and the upper layer material comprises the following steps:
and pressing the lower layer material and the upper layer material in the inner space of the circular ring of the transparent fixed plate.
10. The plastic laser welding method as claimed in claim 1, wherein the laser is a power semiconductor laser, and the power of the laser is 300W to 1000W; the wavelength of the laser beam emitted by the laser is 915 nm.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070007259A1 (en) * | 2004-01-24 | 2007-01-11 | Hentze-Lissotschenko Patentverwaltungs Gmbh & Co. Kg | Apparatus for simultaneous laser welding |
| CN101811364A (en) * | 2009-02-25 | 2010-08-25 | 宝理塑料株式会社 | The joint method of synthetic resin |
| CN205097540U (en) * | 2015-09-16 | 2016-03-23 | 广东顺德华焯机械科技有限公司 | A laser dualbeam soldered connection for plastics both sides welding |
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2020
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070007259A1 (en) * | 2004-01-24 | 2007-01-11 | Hentze-Lissotschenko Patentverwaltungs Gmbh & Co. Kg | Apparatus for simultaneous laser welding |
| CN101811364A (en) * | 2009-02-25 | 2010-08-25 | 宝理塑料株式会社 | The joint method of synthetic resin |
| CN205097540U (en) * | 2015-09-16 | 2016-03-23 | 广东顺德华焯机械科技有限公司 | A laser dualbeam soldered connection for plastics both sides welding |
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