CN110154401A - Plastics school shape laser welding process - Google Patents
Plastics school shape laser welding process Download PDFInfo
- Publication number
- CN110154401A CN110154401A CN201910501787.2A CN201910501787A CN110154401A CN 110154401 A CN110154401 A CN 110154401A CN 201910501787 A CN201910501787 A CN 201910501787A CN 110154401 A CN110154401 A CN 110154401A
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- CN
- China
- Prior art keywords
- welding
- weldments
- shape
- friction
- plastics
- 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.)
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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
-
- 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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
- B29C65/7802—Positioning the parts to be joined, e.g. aligning, indexing or centring
- B29C65/7805—Positioning the parts to be joined, e.g. aligning, indexing or centring the parts to be joined comprising positioning features
-
- 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
- B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
- B29C65/7802—Positioning the parts to be joined, e.g. aligning, indexing or centring
- B29C65/782—Positioning the parts to be joined, e.g. aligning, indexing or centring by setting the gap between the parts 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
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/02—Preparation of the material, in the area to be joined, prior to joining or welding
- B29C66/022—Mechanical pre-treatments, e.g. reshaping
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (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 plastic welding technology fields, more particularly to a kind of plastics school shape laser welding process, first under pressure, the welding surface of two weldments is completely or partially contacted, the shape of two weldments is corrected, after correction, the shape of two weldments is in addition to the gap between two weldments, other are identical as the shape of finished product, then vibration friction is carried out to welding surface with the frequency for vibrating friction welding (FW), reduce between two weldments in the gap to claimed range of welding surface, and part or all of welding surface is reliably connected, then laser welding is carried out to welding surface using laser, the mode that the present invention first passes through vibration friction is surface-treated welding surface, the shape of product can be corrected, face of weld can be made to meet welding requirements again, the dimensional accuracy of welding surface can also be adjusted, vibration Latter two weldment that rubs securely connects relatively, and convenient for the progress of Laser Welding, and welding process will not deform.
Description
Technical field
The present invention relates to plastic welding technology fields, more particularly to a kind of plastics school shape laser welding process.
Background technique
Plastics are a kind of materials with excellent machinability, and with the fast development of high molecular material, increasingly
More product, components start to produce using plastics, so that plastic applications are extremely wide, correspondingly, plastic welding technology
It is more and more extensive using ground.
At present plastics welding using more ultrasonic bonding, friction welding, Vibration Welding, laser welding, induction welding,
High-frequency welding, hot air welding and hot plate welding etc., each advantageous and defect.Wherein laser welding has non-contact, high-efficient, smart
The advantages that degree is high, weld seam is beautiful, good airproof performance, resin less degradation, generation clast are few in the welding process, with other welding process
Compare, the vibration stress and thermal stress of product is greatly decreased, is good at the product that welding has complex appearance, its other party can be welded
The not readily accessible region of method, it is easily controllable, there is good adaptability, be increasingly becoming the development trend of plastics welding.
But laser welding is higher to the dimension precision requirement of weldment, general desired size error within 0.2mm,
But plastics in forming process due to the design of moulding process, mold and structure, raw material and machine etc., may weld
The even certain deformation of biggish scale error is generated on face, this allows for directly carrying out laser welding, portion to the product
Divide the possible surface quality of welding surface not reach requirement, also brings obstruction to laser welding.
Summary of the invention
In view of the above-mentioned deficiencies in the prior art, it is an object of the present invention to and a kind of plastics school shape laser welding process is provided,
By being pre-processed to welding surface, so that the dimensional accuracy of weldment, shape are met the requirements, then carry out laser welding, favorably
In raising welding quality and welding efficiency.
The technical solution adopted by the present invention to solve the technical problems is: a kind of plastics school shape laser welding process, elder generation
Under pressure, the welding surface of two weldments is completely or partially contacted, the shape of two weldments is corrected,
After correction, for the shape of two weldments in addition to the gap between two weldments, other are identical as the shape of finished product, then with vibration
The frequency of dynamic friction weldering carries out welding surface to vibrate friction cutting, and friction cutting squeezes the welding surface first contacted cutting and fusing
Out, it is gradually reduced in the gap to claimed range between two weldments, and part or all of welding surface is reliably connected, so
Laser welding is carried out to welding surface using laser afterwards.
Preferably, the welding surface is provided with several pads, and the pad protrudes from welding surface, vibrates friction welding (FW)
Afterwards, two weldments are fixedly connected by the pad.
Preferably, the pad is higher than the welding surface 0.5mm.
Preferably, after vibrating friction welding (FW), the gap between all welding surfaces of two weldments is less than 0.2-0.3mm.
Preferably, respectively using two weldments of mold or clamp, mold or fixture for each weldment provide to
The pressing force of another weldment.
Preferably, whether the shape that welder is provided with after detecting two weld assembly calibratings is identical with the shape of finished product
Shape detecting apparatus, the mold or fixture are provided with several according to the pressure of Adjusting Shape pressure after two weld assembly calibratings
Point.
Preferably, when vibration friction, amplitude 0.5mm-1.2mm.
Preferably, the vibration friction is that linear electromagnetic vibrates friction, the friction of path type electric and magnetic oscillation, the vibration of mechanical track
Dynamic friction or orbital friction welding (FW).
The beneficial effects of the present invention are: a kind of plastics school shape laser welding process, first under pressure, by two
The welding surface of weldment completely or partially contacts, and the shape of two weldments is corrected, after correction, the shape of two weldments
For shape in addition to the gap between two weldments, other are identical as the shape of finished product, then to vibrate the frequency of friction welding (FW) to welding
Face carries out vibration friction, reduces in the gap to claimed range between two weldments, and makes part or all of welding surface can
By connection, laser welding then is carried out to welding surface using laser, the present invention first passes through the mode of vibration friction to welding surface
It is surface-treated, the shape of product can be corrected and face of weld is made to meet welding requirements, moreover it is possible to welding
The dimensional accuracy in face is adjusted, latter two weldment of vibration friction securely connects relatively, convenient for the progress of Laser Welding, and is welded
Termination process will not deform.
Specific embodiment
The present invention will be further described in detail below with reference to specific embodiments, is not practical range of the invention
Limited to this.
The plastics school shape laser welding process of the present embodiment, first under pressure, by the welding of two weldments
Face completely or partially contacts, and the shape of two weldments is corrected, and after correction, the shape of two weldments is except two welding
Outside gap between part, other are identical as the shape of finished product, then carry out vibration to welding surface to vibrate the frequency of friction welding (FW) and rub
Wipe cutting, friction cutting makes that the welding surface first contacted is cut and fusing squeezes out, and is gradually reduced gap between two weldments extremely
In claimed range, and part or all of welding surface is reliably connected, laser welding then is carried out to welding surface using laser,
The present invention first pass through vibration friction mode welding surface is surface-treated, the shape of product can be corrected and
So that face of weld meets welding requirements, moreover it is possible to be adjusted to the dimensional accuracy of welding surface, latter two weldment of vibration friction
Securely connection relatively, convenient for the progress of Laser Welding, and welding process will not deform.
It further, can be linear electromagnetic vibration friction, the friction of path type electric and magnetic oscillation, machine when carrying out vibration friction
The vibration friction of tool formula track or orbital friction welding (FW), can also be not limited to the several ways.
The technical program needs technological parameter when rubbing to vibration to carry out certain adjustment, specific as follows: vibration friction
When, amplitude 0.5mm-1.2mm, 50-1000 kilograms of pressure, depth of weld 0.2mm-1.0mm.The present invention carries out friction welding
When, weld amplitude is smaller, in order to avoid generate dust；Friction cutting is carried out to surface by vibrating friction, welding surface is rough and uneven in surface
Part correct shape processing, make welding surface can be very good to coincide, in order to laser welding；And when friction welding, welding
Depth is shallower, can tentatively make two weldment bondings.The present invention is in the case where welding product is pressurized, in the mould type of standard
Inside chamber, the deformation that weldment generates when correction is molded, and be tentatively bonded, weldment is bonded completion substantially after vibration friction, welds
It connects and is not very secured, but whole three-dimensional dimension is fixed, and makes product in order to laser welding.Welding surface is due to injection molding or mould
Tool or other reasons cause welding contact surface greater than the welding face contact gap of laser plastic welding requirement, welding surface contact surface
Not smooth enough, after vibrating friction welding (FW), some or all of welding surface of two weldments realizes fitting, have part it is welded on,
But intensity is lower than welding requirements.
To be fixedly welded part and clamping weldment when vibrating friction, the present invention uses mold or clamp two respectively
A weldment, mold or fixture provide the pressing force to another weldment for each weldment, and need to prevent weldment
It is deformed since pressing force is uneven, preferable mode is that the welding surface is provided with several pads, the weldering
Contact protrudes from welding surface, and after vibrating friction welding (FW), two weldments are fixedly connected by the pad, it is preferred that the welding
Point is higher than the welding surface 0.5mm, and after vibration friction, the height of the pad is reduced to concordant or slightly higher with other welding surfaces.
After vibrating friction welding (FW), the gap between all welding surfaces of two weldments is less than 0.2-0.3mm, preferably 0-
0.1mm。
Welder is provided with the shape shape inspection whether identical with the shape of finished product after two weld assembly calibratings of detection
Device is surveyed, the mold or fixture are provided with several according to the pressure spot of Adjusting Shape pressure after two weld assembly calibratings, lead to
Crossing the detection device can determine whether the pressure of adjustment pressure spot, to make deformation of products to meeting at this pressure
It is required that.Meanwhile shape detecting apparatus be also to product whether He Ge inspection.Certain limit should be arranged in the pressure of pressure spot, keep away
Exempt from because of the excessive damage weldment of pressure.
The present invention is different from directly carrying out vibration friction welding (FW) to weldment, but uses vibration by the technical program
The mode of friction handles welding surface, while adjusting the shape of weldment, and utilizes weldment part after vibration friction
Connection molding, guarantees the shape of product when laser welding, product is avoided to deform.
Finally it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than the present invention is protected
The limitation of range is protected, although explaining in detail referring to preferred embodiment to the present invention, those skilled in the art are answered
Work as understanding, it can be with modification or equivalent replacement of the technical solution of the present invention are made, without departing from the reality of technical solution of the present invention
Matter and range.
Claims (8)
1. plastics school shape laser welding process, it is characterised in that: first under pressure, the welding surface of two weldments is complete
Portion or part contact, and the shape of two weldments is corrected, after correction, the shapes of two weldments except two weldments it
Between gap outside, other are identical as the shape of finished product, then with vibrate friction welding (FW) to welding surface carry out vibration friction cutting, friction
Cutting makes the welding surface first contacted cut and melt extrusion, is gradually reduced in the gap to claimed range between two weldments,
And part or all of welding surface is reliably connected, laser welding then is carried out to welding surface using laser.
2. plastics school shape laser welding process according to claim 1, it is characterised in that: the welding surface is provided with several
A pad, the pad protrude from welding surface, and after vibrating friction welding (FW), two weldments are fixedly connected by the pad.
3. plastics school shape laser welding process according to claim 2, it is characterised in that: the pad is higher than the weldering
Junction 0.5mm or more.
4. plastics school shape laser welding process according to claim 1, it is characterised in that: after vibration friction welding (FW), two welderings
Gap between all welding surfaces of fitting is less than 0.2-0.3mm.
5. plastics school shape laser welding process according to claim 1, it is characterised in that: pressed from both sides respectively using mold or fixture
Tight two weldments, mold or fixture provide the pressing force to another weldment for each weldment.
6. plastics school shape laser welding process according to claim 4, it is characterised in that: welder is provided with detection two
Shape shape detecting apparatus whether identical with the shape of finished product after a weld assembly calibrating, if the mold or fixture are provided with
The dry pressure spot according to Adjusting Shape pressure after two weld assembly calibratings.
7. plastics school shape laser welding process according to claim 1, it is characterised in that: when vibration friction, amplitude is
0.5mm-1.2mm。
8. plastics school shape laser welding process according to claim 1, it is characterised in that: the vibration friction is linear electricity
Magnetic vibration friction, the friction of path type electric and magnetic oscillation, the vibration friction of mechanical track or orbital friction welding (FW).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910501787.2A CN110154401B (en) | 2019-06-11 | 2019-06-11 | Plastic shape correction laser welding process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910501787.2A CN110154401B (en) | 2019-06-11 | 2019-06-11 | Plastic shape correction laser welding process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110154401A true CN110154401A (en) | 2019-08-23 |
| CN110154401B CN110154401B (en) | 2021-10-01 |
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ID=67628319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910501787.2A Active CN110154401B (en) | 2019-06-11 | 2019-06-11 | Plastic shape correction laser welding process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110154401B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107414291A (en) * | 2016-05-05 | 2017-12-01 | 香港理工大学 | Ultrasonic wave added laser welding foreign material |
| DE102017128398B3 (en) * | 2017-11-30 | 2019-05-23 | Ernst-Abbe-Hochschule Jena | Method and device for welding at least two films by means of laser |
| JP2019084767A (en) * | 2017-11-08 | 2019-06-06 | 日産自動車株式会社 | Joining method of member to be joined |
-
2019
- 2019-06-11 CN CN201910501787.2A patent/CN110154401B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107414291A (en) * | 2016-05-05 | 2017-12-01 | 香港理工大学 | Ultrasonic wave added laser welding foreign material |
| JP2019084767A (en) * | 2017-11-08 | 2019-06-06 | 日産自動車株式会社 | Joining method of member to be joined |
| DE102017128398B3 (en) * | 2017-11-30 | 2019-05-23 | Ernst-Abbe-Hochschule Jena | Method and device for welding at least two films by means of laser |
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| Publication number | Publication date |
|---|---|
| CN110154401B (en) | 2021-10-01 |
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Effective date of registration: 20230614 Address after: 441400 Qili Village, Leihe Development Park, Yicheng city, Xiangyang City, Hubei Province Patentee after: Hubei xindingtai Automation Technology Co.,Ltd. Address before: 441400 Yicheng Economic Development Zone, Xiangyang City, Hubei Province Patentee before: HUBEI LONGQING TECHNOLOGY Co.,Ltd. |
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