CN201784180U - Remote plastic welding head - Google Patents
Remote plastic welding head Download PDFInfo
- Publication number
- CN201784180U CN201784180U CN 201020546384 CN201020546384U CN201784180U CN 201784180 U CN201784180 U CN 201784180U CN 201020546384 CN201020546384 CN 201020546384 CN 201020546384 U CN201020546384 U CN 201020546384U CN 201784180 U CN201784180 U CN 201784180U
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- China
- Prior art keywords
- lens
- light beam
- welding head
- scanning galvanometer
- galvanometer system
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- Expired - Lifetime
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- 238000004023 plastic welding Methods 0.000 title claims abstract description 19
- 238000006243 chemical reaction Methods 0.000 claims description 19
- 238000003466 welding Methods 0.000 description 18
- 229920003023 plastic Polymers 0.000 description 5
- 239000004033 plastic Substances 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002950 deficient Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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- Lining Or Joining Of Plastics Or The Like (AREA)
- Laser Beam Processing (AREA)
Abstract
The utility model discloses a remote plastic welding head, including a laser beam input end and a scanning galvanometer system; a beam converting module is disposed between the laser beam input end and the scanning galvanometer system; the beam converting module includes a first lens and a second lens; the first lens is a positive lens; the second lens is the positive lens or a negative lens; and the first lens and the second lens are coaxial. The utility model could conveniently realize output of parallel laser beams with different light-spot diameters.
Description
Technical field
The utility model belongs to field of plastics processing, is specifically related to a kind of long-range Plastic Welding head.
Background technology
Along with developing rapidly of manufacturing such as automobile, electronics, medicine equipment and assembly industry, TECHNOLOGY OF WELDING PLASTICS there has been higher demand, need quality and efficient that a kind of quicker, efficient, clean welding manner improves Plastic Welding.In recent years, constantly full-fledged along with laser processing technology, the plastic welding laser technology becomes the focus of research.
The method of utilizing laser to carry out the welding of plastics mainly comprises scanning welding, welding synchronously, profile welding etc., and is wherein common with the scanning welding.The laser welding system of scanning welding is generally by one group of scanning galvanometer system with place F-theta mirror thereafter to form.Galvanometer system is responsible for the control in beam flying path, and the F-theta mirror then is one group of focus lamp, is responsible for laser is focused on the workpiece.When Plastic Welding, different plastics parts has different requirements to welding precision and weld width, the general fine welding requirements weld seam of high accuracy is thinner, the welding of the big workpiece that precision is not too high then requires the weld seam broad, therefore, the different accuracy at different weldments requires just need adjust the size of hot spot.
Traditional scanning galvanometer and f-theta mirror are formed the scanning plumb joint can be by changing the welding that defocusing amount realizes the different in width weld seam, the comparison difficulty but this method operates, defocusing amount also is difficult to control, and to welding apart from strict restriction is arranged, workpiece must be in the specific range of out of focus, is difficult to realize long-range welding.
Summary of the invention
The purpose of this utility model is to overcome the defective of prior art, and a kind of long-range Plastic Welding head is provided, and the utility model can be realized the collimated laser beam output of different spot diameters more easily.
Its technical scheme is as follows:
A kind of long-range Plastic Welding head, comprise laser beam input and scanning galvanometer system, between laser beam input and scanning galvanometer system, be provided with the light beam conversion module, this light beam conversion module comprises first lens and second lens, first lens are positive lens, second lens are negative lens, and first lens are coaxial with second lens.
Also include 45 degree total reflective mirrors, meet at right angles between the input of the output of described light beam conversion module and described scanning galvanometer system, and both are all towards this 45 degree total reflective mirror.
The right focus of described first lens overlaps fully with the right virtual focus of second lens.
The replacement scheme of aforementioned schemes is:
A kind of long-range Plastic Welding head, comprise laser beam input and scanning galvanometer system, between laser beam input and scanning galvanometer system, be provided with the light beam conversion module, this light beam conversion module comprises first lens and second lens, first lens are positive lens, second lens are positive lens, and first lens are coaxial with second lens.
Also include 45 degree total reflective mirrors, meet at right angles between the input of the output of described light beam conversion module and described scanning galvanometer system, and both are all towards this 45 degree total reflective mirror.
The right focus of described first lens overlaps fully with the left focus of second lens.
In sum, the utility model has the advantages that:
Laser instrument is from laser input input laser, and behind the light beam modular converter, convert the collimated laser beam of suitable spot size to, enter the scanning galvanometer system by 45 degree total reflective mirrors again, laser beam welds at plastic workpiece surface along particular path under the control of galvanometer system; Owing to come out to be the parallel laser light beam from this laser welding system, the shape of hot spot remains unchanged substantially after the long Distance Transmission, therefore, as long as in the scope that energy attenuation allows, just can carry out long-range welding.
Description of drawings
Fig. 1 is the structured flowchart of the described long-range Plastic Welding head of the utility model embodiment;
Fig. 2 is among the embodiment one, and laser beam is by the schematic diagram of light beam conversion module;
Fig. 3 is among the embodiment two, and laser beam is by the schematic diagram of light beam conversion module;
Description of reference numerals:
1, laser input, 2, the scanning galvanometer system, 3, the light beam conversion module, 4, first lens, 5, second lens, 6, total reflective mirror, 7, workpiece.
The specific embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is elaborated:
Embodiment one
As shown in Figure 1 and Figure 2, a kind of long-range Plastic Welding head, comprise laser beam input and scanning galvanometer system 2, between laser beam input and scanning galvanometer system 2, be provided with light beam conversion module 3, this light beam conversion module 3 comprises first lens 4 and second lens 5, first lens 4 are positive lens, and second lens 5 are negative lens, and first lens 4 are coaxial with second lens 5.Also include 45 degree total reflective mirrors 6, meet at right angles between the input of the output of light beam conversion module 3 and scanning galvanometer system 2, and both all overlap with the right virtual focus of second lens 5 fully towards the right focus of these 45 degree total reflective mirror, 6, the first lens 4.
The focal length of first lens 4 is f1, and the empty focal length of second lens 5 is f2, and then spot diameter is that the light beam of d1 is the light beam of d2 through light beam conversion module 3 back output facula diameters, and the relation of the two satisfies d1/d2=--f1/f2.Like this, just can form the light beam modular converter of different switching ratio by selecting the lens of different focal.So, for present embodiment, laser instrument is from laser input 1 input laser, and behind the light beam modular converter, convert the collimated laser beam of suitable spot size to, enter scanning galvanometer system 2 by 45 degree total reflective mirrors 6 again, laser beam welds on plastics part 7 surfaces along particular path under the control of galvanometer system; Owing to come out to be the parallel laser light beam from this laser welding system, the shape of hot spot remains unchanged substantially after the long Distance Transmission, therefore, as long as in the scope that energy attenuation allows, just can carry out long-range welding.
Embodiment two
As shown in Figure 3, in the present embodiment, second lens 5 are positive lens, and the right focus of first lens 4 overlaps fully with the left focus of second lens 5.
The focal length of two positive lens is respectively f1 and f2, and diameter is that the collimated light beam of d1 is converted into the collimated light beam that diameter is d2 through behind the lens, and then the relation of the two satisfies d1/d2=f1/f2.Equally, can form the light beam modular converter of different switching ratio by selecting the lens of different focal.Its principle and effect are identical with embodiment one, repeat no more herein.
Only be specific embodiment of the utility model below, do not limit protection domain of the present utility model with this; Any replacement and the improvement done on the basis of not violating the utility model design all belong to protection domain of the present utility model.
Claims (6)
1. long-range Plastic Welding head, comprise laser beam input and scanning galvanometer system, it is characterized in that, between laser beam input and scanning galvanometer system, be provided with the light beam conversion module, this light beam conversion module comprises first lens and second lens, first lens are positive lens, and second lens are negative lens, and first lens are coaxial with second lens.
2. long-range according to claim 1 Plastic Welding head is characterized in that, also includes 45 degree total reflective mirrors, meet at right angles between the input of the output of described light beam conversion module and described scanning galvanometer system, and both is all towards this 45 degree total reflective mirror.
3. long-range as claimed in claim 1 or 2 Plastic Welding head is characterized in that, the right focus of described first lens overlaps fully with the right virtual focus of second lens.
4. long-range Plastic Welding head, comprise laser beam input and scanning galvanometer system, it is characterized in that, between laser beam input and scanning galvanometer system, be provided with the light beam conversion module, this light beam conversion module comprises first lens and second lens, first lens are positive lens, and second lens are positive lens, and first lens are coaxial with second lens.
5. as long-range Plastic Welding head as described in the claim 4, it is characterized in that, also include 45 degree total reflective mirrors, meet at right angles between the input of the output of described light beam conversion module and described scanning galvanometer system, and both are all towards this 45 degree total reflective mirror.
6. as long-range Plastic Welding head as described in claim 4 or 5, it is characterized in that the right focus of described first lens overlaps fully with the left focus of second lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020546384 CN201784180U (en) | 2010-09-27 | 2010-09-27 | Remote plastic welding head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020546384 CN201784180U (en) | 2010-09-27 | 2010-09-27 | Remote plastic welding head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201784180U true CN201784180U (en) | 2011-04-06 |
Family
ID=43816157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201020546384 Expired - Lifetime CN201784180U (en) | 2010-09-27 | 2010-09-27 | Remote plastic welding head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201784180U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105807421A (en) * | 2016-05-10 | 2016-07-27 | 天津大学 | Parallel-light-emerging angle magnification MEMS scanning method and optical system |
-
2010
- 2010-09-27 CN CN 201020546384 patent/CN201784180U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105807421A (en) * | 2016-05-10 | 2016-07-27 | 天津大学 | Parallel-light-emerging angle magnification MEMS scanning method and optical system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110406 |
|
| CX01 | Expiry of patent term |