CN109421280A - A kind of method for laser welding for thermoplastic - Google Patents
A kind of method for laser welding for thermoplastic Download PDFInfo
- Publication number
- CN109421280A CN109421280A CN201710733150.7A CN201710733150A CN109421280A CN 109421280 A CN109421280 A CN 109421280A CN 201710733150 A CN201710733150 A CN 201710733150A CN 109421280 A CN109421280 A CN 109421280A
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- CN
- China
- Prior art keywords
- laser
- welding
- laser welding
- thermoplastic
- product
- 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
- 238000003466 welding Methods 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims abstract description 25
- 229920001169 thermoplastic Polymers 0.000 title claims abstract description 7
- 239000004416 thermosoftening plastic Substances 0.000 title claims abstract description 7
- 239000004033 plastic Substances 0.000 claims abstract description 5
- 229920003023 plastic Polymers 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims description 8
- 238000002844 melting Methods 0.000 claims description 2
- 230000008018 melting Effects 0.000 claims description 2
- 230000035882 stress Effects 0.000 abstract description 4
- 230000003247 decreasing effect Effects 0.000 abstract description 3
- 229940079593 drug Drugs 0.000 abstract description 3
- 239000003814 drug Substances 0.000 abstract description 3
- 239000000825 pharmaceutical preparation Substances 0.000 abstract description 3
- 229940127557 pharmaceutical product Drugs 0.000 abstract description 3
- 230000008646 thermal stress Effects 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- BVPWJMCABCPUQY-UHFFFAOYSA-N 4-amino-5-chloro-2-methoxy-N-[1-(phenylmethyl)-4-piperidinyl]benzamide Chemical compound COC1=CC(N)=C(Cl)C=C1C(=O)NC1CCN(CC=2C=CC=CC=2)CC1 BVPWJMCABCPUQY-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 238000004023 plastic welding Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
- B29C65/1603—Laser beams characterised by the type of electromagnetic radiation
- B29C65/1612—Infrared [IR] radiation, e.g. by infrared lasers
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Optics & Photonics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
The invention discloses a kind of method for laser welding for thermoplastic, comprising the following steps: S1, clips together multiple plastic items to be welded；S2, it is absorbed by laser emitter by the laser NIR in a branch of short-wave infrared area transmitted through upper part and by lower part.Method for laser welding by adopting the above technical scheme, has a following advantages: welding is accurate, securely and sealed air-tight and water-tight；Welding is more suitable for pharmaceutical products and electronic sensor of State Food and Drug Administration's control etc. without residue；It is easily controllable, it can weld the workpiece that size is small or contour structures are complicated；The vibration stress and thermal stress of product can be greatly decreased, to be more applicable for product easy to damage, such as the electronic component of processing precise.
Description
Technical field
The present invention relates to welding technology field, in particular to a kind of high speed, contactless method for laser welding.
Background technique
Currently, in the prior art, traditional plastics welding manner mainly includes following several:
1, hot plate welding；
2, rotating welding；
3, ultrasonic bonding；
4, Vibration welding.
However, above-mentioned welding manner haves the defects that certain, such as there may be flash, flying chips to ask for welding region
Topic；
Meanwhile it being fluctuated greatly using the product size after the welding of above-mentioned existing way, and product is local because stress may be led
Cause certain deformation；
Further, since precision electronic element is contained in the inside of certain products, several precision elements are easily in the mistake of welding
Impaired because vibrating in journey, eventually leading to can not steady production.
Summary of the invention
The problems such as in order to solve above-mentioned flash, flying chip, deformation and vibration, the present invention provides one kind to be used for thermoplasticity
The method for laser welding of plastics can effectively overcome several defects present in existing welding manner.
A kind of above-mentioned method for laser welding for thermoplastic, comprising the following steps:
S1, multiple plastic items to be welded are clipped together；
S2, by laser emitter by the laser NIR in a branch of short-wave infrared area transmitted through upper part and by lower part
It is absorbed.
In the above method, the wavelength of laser NIR is 810nm-1064nm in the step S2.
In the above method, the infrared laser that the lower part in the step S2 is absorbed is converted into thermal energy, makes lower layer
Melt on the surface of component；Since upper layer and lower layer material has good heat conductivity, and contact the heat very close, lower layer generates
Amount can convey upper layer of material, and be allowed to melt, so that upper part and lower part melting welding are connected together.
In the above method, the weld strength of the welding method is more than the intensity of raw material.
The advantages and beneficial effects of the present invention are: the present invention provides a kind of laser welding side for thermoplastic
Method, by using the mode of laser welding, to have:
Welding is accurate, securely and sealed air-tight and water-tight；
Welding is more suitable for the pharmaceutical products and electronic sensor of State Food and Drug Administration's control without residue
Deng；
It is easily controllable, it can weld the workpiece that size is small or contour structures are complicated；
The vibration stress and thermal stress of product can be greatly decreased, to be more applicable for product easy to damage, such as process
Accurate electronic component etc..
Specific embodiment
Further description of the specific embodiments of the present invention below.Following embodiment is only used for clearly illustrating
Technical solution of the present invention, and not intended to limit the protection scope of the present invention.
The present invention is a kind of method for laser welding for thermoplastic, and the following steps are included:
S1, multiple plastic items to be welded are clipped together；
S2, by laser emitter by the laser NIR in a branch of short-wave infrared area transmitted through upper part and by lower part
It is absorbed；In this step, this programme uses wavelength as the laser NIR of 810nm-1064nm, so that lower part institute
The infrared laser of absorption is converted into thermal energy, and melts the surface of lower part；
Simultaneously as upper part and the material of lower part all have good heat conductivity, and intimate contact with one another,
The heat that lower layer is generated conveys upper layer of material, and is allowed to melt, thus by upper part and lower part fusion welding
Together, and the intensity that weld strength is more than raw material may be implemented.
In actual production, the method for laser welding in the technical program has characteristics that
Welding is accurate, secured, and sealed air-tight or water, while resin less degradation, the clast of generation are few in welding process,
The surface of product can closely link together around weld seam.
Welding makes it be more suitable for the pharmaceutical products of State Food and Drug Administration's control and electronic sensor without residue
Device etc..
It is easily controllable, it can weld the workpiece that size is small or contour structures are complicated.Since laser is convenient for computer software control,
And optical fiber laser output can neatly reach each subtle position of part, can weld other welding sides using laser welding
The product with complex appearance, even 3 dimensional coil geometry is welded in the not readily accessible region of method.
Compared to other existing welding methods, the vibration of product can be greatly decreased in the method for laser welding in the technical program
Dynamic stress and thermal stress, so that the aging speed of product or device internal component is slower, to be more applicable for easy to damage
Product, and the different material of numerous species can be welded.
It welds without friction, the electronic component of processing precise is therefore particularly suitable for, such as mouse, mobile phone, connector
Part etc..Meanwhile it being also especially suitable for the electronic product of manufacture automobile, such as automatic door lock, without key access device and sensing
Device etc..
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (4)
1. a kind of method for laser welding for thermoplastic, which comprises the following steps:
S1, multiple plastic items to be welded are clipped together；
S2, it is inhaled by laser emitter by the laser NIR in a branch of short-wave infrared area transmitted through upper part and by lower part
It receives.
2. method for laser welding according to claim 1, which is characterized in that the wavelength of laser NIR is in the step S2
810nm-1064nm。
3. method for laser welding according to claim 1, which is characterized in that the lower part in the step S2 is absorbed
Infrared laser be converted into thermal energy, melt the surface of lower part；Since upper part and the material of lower part have
There is good heat conductivity, and intimate contact with one another, the heat that lower layer is generated conveys upper layer of material, and is allowed to melt
Change, so that upper part and lower part melting welding are connected together.
4. method for laser welding according to claim 1, which is characterized in that the weld strength of the welding method is more than original
The intensity of material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710733150.7A CN109421280A (en) | 2017-08-24 | 2017-08-24 | A kind of method for laser welding for thermoplastic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710733150.7A CN109421280A (en) | 2017-08-24 | 2017-08-24 | A kind of method for laser welding for thermoplastic |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109421280A true CN109421280A (en) | 2019-03-05 |
Family
ID=65500879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710733150.7A Pending CN109421280A (en) | 2017-08-24 | 2017-08-24 | A kind of method for laser welding for thermoplastic |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109421280A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6255121A (en) * | 1985-09-04 | 1987-03-10 | Toyota Motor Corp | Jointing synthetic resin materials |
| WO2000066346A1 (en) * | 1999-04-30 | 2000-11-09 | Powerlasers Limited | Welding of carpet to panels |
| CN100348404C (en) * | 2002-12-27 | 2007-11-14 | Lpkf激光电子股份公司 | Method and device for welding thermoplastic material shaped parts, particularly for contour-welding three-dimensional shaped parts |
| CN101267933A (en) * | 2005-09-21 | 2008-09-17 | 东方化学工业株式会社 | Laser welded body |
| CN102107530A (en) * | 2010-12-30 | 2011-06-29 | 东莞市创普光电技术有限公司 | New method for welding plastics by metal laser welding machine |
| CN102173218A (en) * | 2010-12-30 | 2011-09-07 | 东莞市创普光电技术有限公司 | New application of laser marking machine |
| CN103817926A (en) * | 2012-11-17 | 2014-05-28 | 安徽蓝德集团股份有限公司 | Method for welding plastic parts by utilizing laser |
| CN105817763A (en) * | 2015-07-13 | 2016-08-03 | 常州市华晟福涛光电科技有限公司 | Plastic optical fiber laser-welding technique and application thereof |
-
2017
- 2017-08-24 CN CN201710733150.7A patent/CN109421280A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6255121A (en) * | 1985-09-04 | 1987-03-10 | Toyota Motor Corp | Jointing synthetic resin materials |
| WO2000066346A1 (en) * | 1999-04-30 | 2000-11-09 | Powerlasers Limited | Welding of carpet to panels |
| CN100348404C (en) * | 2002-12-27 | 2007-11-14 | Lpkf激光电子股份公司 | Method and device for welding thermoplastic material shaped parts, particularly for contour-welding three-dimensional shaped parts |
| CN101267933A (en) * | 2005-09-21 | 2008-09-17 | 东方化学工业株式会社 | Laser welded body |
| CN102107530A (en) * | 2010-12-30 | 2011-06-29 | 东莞市创普光电技术有限公司 | New method for welding plastics by metal laser welding machine |
| CN102173218A (en) * | 2010-12-30 | 2011-09-07 | 东莞市创普光电技术有限公司 | New application of laser marking machine |
| CN103817926A (en) * | 2012-11-17 | 2014-05-28 | 安徽蓝德集团股份有限公司 | Method for welding plastic parts by utilizing laser |
| CN105817763A (en) * | 2015-07-13 | 2016-08-03 | 常州市华晟福涛光电科技有限公司 | Plastic optical fiber laser-welding technique and application thereof |
Non-Patent Citations (1)
| Title |
|---|
| 王中林等: "《激光加工设备与工艺》", 30 September 2011, 武汉：华中科技大学出版社 * |
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| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 201515 No. 633, Qin bend road, Jinshan Wei Town, Shanghai, Jinshan District Applicant after: Shanghai Zhaomin New Materials Technology Co.,Ltd. Address before: 201515 No. 633, Qin bend road, Jinshan Wei Town, Shanghai, Jinshan District Applicant before: SHANGHAI ZHAOMIN NEW MATERIAL TECHNOLOGY Co.,Ltd. |
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190305 |