CN107471657A - A kind of non-transmissive welding method of the laser of thermoplastic - Google Patents
A kind of non-transmissive welding method of the laser of thermoplastic Download PDFInfo
- Publication number
- CN107471657A CN107471657A CN201710698139.1A CN201710698139A CN107471657A CN 107471657 A CN107471657 A CN 107471657A CN 201710698139 A CN201710698139 A CN 201710698139A CN 107471657 A CN107471657 A CN 107471657A
- Authority
- CN
- China
- Prior art keywords
- plastic module
- laser
- module
- laser beam
- upper plastic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- B29C65/1632—Laser beams characterised by the way of heating the interface direct heating the surfaces to be joined
-
- 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
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
- B29C66/733—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the optical properties of the material of the parts to be joined, e.g. fluorescence, phosphorescence
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Optics & Photonics (AREA)
- Health & Medical Sciences (AREA)
- Electromagnetism (AREA)
- Toxicology (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
The present invention relates to a kind of non-transmissive welding method of the laser of thermoplastic, including step：Two upper plastic modules to be welded, lower plastic module are positioned；Upper plastic module, lower plastic module are overlapped together by pressure；Using laser beam focus on upper plastic module, heating region is formed；The parameter of regulation laser beam makes the temperature of heating region be less than the fusing point of upper plastic module, and is radiated lower plastic module higher than the fusing point of lower plastic module, the heat of heating region, melts corresponding part, is bonded under the effect of the pressure with upper plastic module；Mobile laser beam, forms some heating regions, realizes that multiple location bonds；After the completion of laser heating, upper plastic module, lower plastic module pressurize for a period of time and are cooled, it is fully bonded.Laser is realized the laser welding of opaque plastic by way of heat radiation, the problem of can avoiding causing product bad using ultrasonic bonding or damaging, improves the qualification rate of product without the upper plastic module of transmission.
Description
Technical field
The present invention relates to laser welding field, particularly a kind of non-transmissive welding method of the laser of thermoplastic.
Background technology
With the fast development of automobile and Medical Devices industry, increasing spare and accessory parts all begin to use plastic material generation
For original metal material.But many plastics spare and accessory parts can not one-shot forming due to factors such as processing procedure, processes；So postorder needs
By the plastic spliced of disparate modules together, wherein, the use of plastic welding laser is a kind of important processing method.
And existing plastic welding laser technique, it is transparent material to be typically only capable to apply on upper strata；Lower floor is opaque material
In the situation of material.Such as Fig. 1：Laser beam a passes through upper strata transparent plastic b；Absorbed by lower floor opaque plastics c and make opaque plastics
Melted by heat；Two layers of plastic is combined together above and below making again.And for the welding between opaque plastic module, prior art
The mode of ultrasonic bonding is used mostly.But ultrasonic bonding has one disadvantage in that, caused high-frequency energy during ultrasonic bonding
Amount ripple can influence the inner member of many electronic products, so as to cause the bad of product or damage.
The content of the invention
The technical problem to be solved in the present invention is, there is provided a kind of non-transmissive welding method of the laser of thermoplastic, purport
Needed between solving existing opaque plastic module by ultrasonic bonding, the problem of causing product bad or damage.
The technical solution adopted for the present invention to solve the technical problems is：It is non-transmissive to provide a kind of laser of thermoplastic
Welding method, it is characterised in that comprise the following steps：
Two upper plastic modules to be welded, lower plastic module are positioned, in holding between plastic module, lower plastic module
Do not offset；
Upper plastic module, lower plastic module are overlapped together by pressure；The upper plastic module, lower plastic module are
Nontransparent thermoplastic；The fusing point of the upper plastic module is higher than lower plastic module；
Using laser beam focus on upper plastic module, heating region is formed；
The parameter of regulation laser beam makes the temperature of heating region be less than the fusing point of upper plastic module, and is higher than lower plastic module
Fusing point, the heat of heating region is radiated lower plastic module, melts corresponding part, and the melt portions are under the effect of the pressure
Bonded with upper plastic module；
Mobile laser beam, forms some heating regions on upper plastic module, plastic module in realization, lower plastic module
Multiple location bonds；
After the completion of laser heating, upper plastic module, lower plastic module pressurize for a period of time and are cooled, make it fully viscous
Close.
Further, before being overlapped together two upper plastic modules to be welded, lower plastic modules by pressure, also
Plastic module, the impurity on lower plastic module contact surface need to be removed.
Further, the laser beam is sent by semiconductor laser.
Further, the wavelength of the laser beam is 900nm-1000nm, power 20-100W, the light of the laser beam
Beam quality 5-20.
Further, the thickness of the upper plastic module is 2mm, and the wavelength of the laser beam is 980nm, power 50W,
The beam quality 20 of the laser beam, the dwell time are 5-10s.
Relative to prior art, a kind of non-transmissive welding method of the laser of thermoplastic provided by the invention, for molten
The welding of higher upper plastic module Yu the relatively low lower plastic module of fusing point of point, during welding, adjusting the parameter of laser beam makes heating
The temperature in region is less than the fusing point of upper plastic module, and need not transmit upper plastic module higher than the fusing point of lower plastic module, laser,
The laser welding of opaque plastic is realized by way of heat radiation, can avoid causing product bad using ultrasonic bonding or damage
Bad the problem of, improve the qualification rate of product.
Brief description of the drawings
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing：
Fig. 1 is the structural representation for the laser transmission welding that prior art provides；
The non-transmissive welded structure schematic diagram of mechanism provided by the invention in Fig. 2；
Fig. 3 is the step flow chart of the welding method of the present invention；
Fig. 4 is another flow chart of steps of welding method of the present invention.
Embodiment
In conjunction with accompanying drawing, presently preferred embodiments of the present invention is elaborated.
As shown in Fig. 2 the present invention provides a kind of non-transmissive welding method of the laser of thermoplastic, mainly for fusing point compared with
The welding of high upper plastic module 10 Yu the relatively low lower plastic module 20 of fusing point.During welding, adjusting the parameter of laser beam makes heating
The temperature in region is less than the fusing point of upper plastic module 10, and higher than the fusing point of lower plastic module 20, laser is without the upper plastics of transmission
Module 10, the laser welding of opaque plastic is realized by way of heat radiation, can avoid causing product using ultrasonic bonding
The problem of bad or damage, improve the qualification rate of product.
As shown in figure 3, the non-transmissive welding method of the laser of thermoplastic, comprises the following steps：
Two upper plastic modules 10 to be welded, lower plastic modules 20 are positioned, plastic module 10, lower the modern designs of plastics in holding
Do not offset between block 20.In the present embodiment, upper plastic module 10, lower plastic module 20 are positioned by positioning fixture,
Dislocation, which occurs, when avoiding welding, between two modules influences welding effect.
Upper plastic module 10, lower plastic module 20 are overlapped together by pressure；Wherein, upper plastic module 10, lower modeling
Material module 20 is nontransparent thermoplastic, and the fusing point of upper plastic module 10 is higher than lower plastic module 20, is so just avoided that modeling
Material module 10 melts before lower plastic module 20；In the present embodiment, by clamping device by upper plastic module 10, lower plastics
Module 20 is pressed together.
Using laser beam focus on upper plastic module 10, heating region is formed；
The parameter of regulation laser beam makes the temperature of heating region be less than the fusing point of upper plastic module 10, and is higher than lower the modern designs of plastics
The fusing point of block 20, the heat of heating region are radiated lower plastic module 20, melt corresponding part, the melt portions are in pressure
Effect is lower to be bonded with upper plastic module 10；
Mobile laser beam, forms some heating regions on upper plastic module 10, plastic module 10, lower the modern designs of plastics in realization
The multiple location bonding of block 20；
After the completion of laser heating, upper plastic module 10, the pressurize of lower plastic module 20 for a period of time and are cooled, make its abundant
Bonding.
As shown in figure 4, two upper plastic modules 10 to be welded, lower plastic modules 20 are overlapped together by it by pressure
Before, also need to remove plastic module 10, the impurity on the contact surface of lower plastic module 20, in order to avoid influence absorption of the material to laser or
Person influences the fitting of two plastic modules.
In the present embodiment, laser beam is sent by semiconductor laser, because semiconductor laser easily produces 900-
1000nm laser wavelength, the laser of this wave band are referred to as near-infrared laser；Infrared laser and material easily produce heat when acting on
Effect, therefore compare and be adapted to thermoplasticity welding.The wavelength of laser beam is 900nm-1000nm, power 20-100W, laser
(beam quality is an index for weighing laser beam encircled energy to the beam quality 5-20 of beam, and its value is bigger, illustrates to swash
Beam energy concentration degree is smaller, i.e., spot energy distribution is more uniform, and such hot spot is relatively adapted to welding plastic).Upper modeling
Expect that the thickness of module 10 should not be too thick, it is too thick to influence heat radiation.
Specifically, it is 2mm upper plastic module 10 to select thickness, and the thickness of lower plastic module 20 does not require, will partly lead
The laser beam wavelength that body laser projects is adjusted to 980nm, power setting 50W, and beam quality is set to 20.During welding, upper modeling
Expect the non-fusible of module 10, lower plastic module 20 is melted by heat radiation, and laser passes through hot spoke without the upper plastic module 10 of transmission
The mode penetrated realizes the laser welding of opaque plastic, after pressurize 5-10s, completes welding.
It should be appreciated that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations, to ability
For field technique personnel, the technical scheme described in above-described embodiment can be modified, or it is special to which part technology
Sign carries out equivalent substitution；And all such modifications and replacement, it should all belong to the protection domains of appended claims of the present invention.
Claims (5)
1. a kind of non-transmissive welding method of the laser of thermoplastic, it is characterised in that comprise the following steps：
Two upper plastic modules to be welded, lower plastic module are positioned, it is not inclined between plastic module, lower plastic module in holding
Move；
Upper plastic module, lower plastic module are overlapped together by pressure；The upper plastic module, lower plastic module are non-
Bright thermoplastic；The fusing point of the upper plastic module is higher than lower plastic module；
Using laser beam focus on upper plastic module, heating region is formed；
The parameter of regulation laser beam makes the temperature of heating region be less than the fusing point of upper plastic module, and molten higher than lower plastic module
Point, the heat of heating region are radiated lower plastic module, melt corresponding part, the melt portions under the effect of the pressure with it is upper
Plastic module bonds；
Mobile laser beam, forms some heating regions on upper plastic module, plastic module, the multi-section of lower plastic module in realization
Position bonding；
After the completion of laser heating, upper plastic module, lower plastic module pressurize for a period of time and are cooled, it is fully bonded.
2. the non-transmissive welding method of the laser of thermoplastic according to claim 1, it is characterised in that will by pressure
Before two upper plastic modules to be welded, lower plastic modules overlap together, also need to remove plastic module, lower plastic module
Impurity on contact surface.
3. the non-transmissive welding method of the laser of the thermoplastic according to any one in claim 1 or 2, its feature exist
In the laser beam is sent by semiconductor laser.
4. the non-transmissive welding method of the laser of thermoplastic according to claim 3, it is characterised in that the laser beam
Wavelength be 900nm-1000nm, power 20-100W, the beam quality 5-20 of the laser beam.
5. the non-transmissive welding method of the laser of thermoplastic according to claim 4, it is characterised in that the upper plastics
The thickness of module is 2mm, and the wavelength of the laser beam is 980nm, power 50W, and the beam quality 20 of the laser beam is described
Dwell time is 5-10s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710698139.1A CN107471657A (en) | 2017-08-15 | 2017-08-15 | A kind of non-transmissive welding method of the laser of thermoplastic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710698139.1A CN107471657A (en) | 2017-08-15 | 2017-08-15 | A kind of non-transmissive welding method of the laser of thermoplastic |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107471657A true CN107471657A (en) | 2017-12-15 |
Family
ID=60599654
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710698139.1A Pending CN107471657A (en) | 2017-08-15 | 2017-08-15 | A kind of non-transmissive welding method of the laser of thermoplastic |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107471657A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110625949A (en) * | 2019-10-25 | 2019-12-31 | 苏州卡利肯新光讯科技有限公司 | Laser transmission welding method for thermoplastic plastics |
| CN110789131A (en) * | 2019-11-13 | 2020-02-14 | 南京航空航天大学 | Controllable progressive loading clamping equipment and method for laser connection of thermoplastic composite material and light alloy |
| DE102021209203B3 (en) | 2021-08-20 | 2022-04-21 | Continental Automotive Gmbh | Device and method for joining two parts to be joined |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104626543A (en) * | 2015-01-12 | 2015-05-20 | 中国科学院宁波材料技术与工程研究所 | Welding method for thermoplastic composite material |
-
2017
- 2017-08-15 CN CN201710698139.1A patent/CN107471657A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104626543A (en) * | 2015-01-12 | 2015-05-20 | 中国科学院宁波材料技术与工程研究所 | Welding method for thermoplastic composite material |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110625949A (en) * | 2019-10-25 | 2019-12-31 | 苏州卡利肯新光讯科技有限公司 | Laser transmission welding method for thermoplastic plastics |
| CN110625949B (en) * | 2019-10-25 | 2023-12-08 | 苏州卡利肯新光讯科技有限公司 | Laser transmission welding method for thermoplastic plastics |
| CN110789131A (en) * | 2019-11-13 | 2020-02-14 | 南京航空航天大学 | Controllable progressive loading clamping equipment and method for laser connection of thermoplastic composite material and light alloy |
| CN110789131B (en) * | 2019-11-13 | 2021-09-24 | 南京航空航天大学 | Controllable progressive loading clamping equipment and method for laser connection of thermoplastic composite material and light alloy |
| DE102021209203B3 (en) | 2021-08-20 | 2022-04-21 | Continental Automotive Gmbh | Device and method for joining two parts to be joined |
| WO2023020669A1 (en) | 2021-08-20 | 2023-02-23 | Continental Autonomous Mobility Germany GmbH | Device and method for joining together two joining partners |
| DE102021209203C5 (en) | 2021-08-20 | 2023-03-30 | Continental Autonomous Mobility Germany GmbH | Device and method for joining two parts to be joined |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107471657A (en) | A kind of non-transmissive welding method of the laser of thermoplastic | |
| JP4572118B2 (en) | Method and apparatus for trajectory welding thermoplastic moldings | |
| CN110625949B (en) | Laser transmission welding method for thermoplastic plastics | |
| US8641858B2 (en) | Airtight container manufacturing method, and image displaying apparatus manufacturing method using airtight container manufacturing method | |
| JP2007111931A (en) | Laser welding method of thermoplastic resin members and laser welding apparatus | |
| WO2014123022A1 (en) | Laser joining apparatus and laser joining method | |
| JP5364039B2 (en) | Manufacturing method of resin molded products | |
| CN110039177B (en) | Glass sealing welding method | |
| US8728268B2 (en) | Method for manufacturing resin molding and laser beam irradiation apparatus | |
| CN102240850B (en) | Joint method and engagement device | |
| JP6073643B2 (en) | Vehicle lamp and manufacturing method thereof | |
| CN102950766B (en) | Laser transmission welding method for thermoplastic plastics | |
| JP2006237451A (en) | Apparatus and method for bonding anisotropic conductive film by using laser | |
| KR101703561B1 (en) | Solder reflow equipment | |
| CN205097540U (en) | A laser dualbeam soldered connection for plastics both sides welding | |
| CN102107530A (en) | New method for welding plastics by metal laser welding machine | |
| JP2007182003A (en) | Laser welding method for resin material | |
| CN107414295A (en) | A kind of watchband and its processing method and device | |
| KR20110090767A (en) | Method for laser welding resin members and laser welded body of resin members | |
| KR102309105B1 (en) | Manufacturing method of different material joint body | |
| CN1912694A (en) | Jointing method | |
| CN103817926A (en) | Method for welding plastic parts by utilizing laser | |
| JP2004188802A (en) | Laser welding method of resin member | |
| JP2011031587A (en) | Method for laser welding between resin members | |
| JP2015063418A (en) | Method of fusing glass substrate by laser beam, and laser processing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171215 |
|
| RJ01 | Rejection of invention patent application after publication |