CN109926718A - A kind of temperature-controlled laser welding system and method - Google Patents
A kind of temperature-controlled laser welding system and method Download PDFInfo
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- CN109926718A CN109926718A CN201910364923.8A CN201910364923A CN109926718A CN 109926718 A CN109926718 A CN 109926718A CN 201910364923 A CN201910364923 A CN 201910364923A CN 109926718 A CN109926718 A CN 109926718A
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Abstract
The present invention provides a kind of temperature-controlled laser welding systems, and welding efficiency, and the size of controllable welding hot spot not only can be improved, guarantee product quality, in addition, the present invention also provides a kind of temperature-controlled laser welding methods；It includes pyrometer and the laser generator being connected electrically, the light combination mirror being obliquely installed with its laser beam exits direction is equipped with below the laser generator, it is equipped with and light combination mirror reflecting mirror disposed in parallel below the pyrometer, the light combination mirror is located in the input path of the reflecting mirror, galvanometer is provided on the reflected light path of the light combination mirror, the galvanometer lower part is connected with field lens, and the focal spot of the field lens is welding position.
Description
Technical field
The present invention relates to welding technology field, specially a kind of temperature-controlled laser welding system and method.
Background technique
Photovoltaic welding belt is the important raw material during welding photovoltaic component, the company being mainly used between solar battery sheet
It connects, plays the effect of poly- conductance electricity.But the welding between existing welding and cell piece is mostly welded by manually, not only
Welding efficiency is low, and is unable to control the size of welding hot spot, if if hot spot is larger, it is likely that will affect welding procedure matter
Amount, if the lesser words of hot spot, it is likely that can burn solder joint, influence product quality.
Summary of the invention
In view of the above-mentioned problems, welding efficiency not only can be improved the present invention provides a kind of temperature-controlled laser welding system, and
The size of controllable welding hot spot, guarantees product quality, in addition, the present invention also provides a kind of temperature-controlled laser welding methods.
Its technical solution is such that a kind of temperature-controlled laser welding system, it is characterised in that: it include pyrometer and and its
The laser generator of electrical connection, the laser generator lower section are equipped with the light combination mirror being obliquely installed with its laser beam exits direction,
It is equipped with below the pyrometer and is located at the incidence of the reflecting mirror with light combination mirror reflecting mirror disposed in parallel, the light combination mirror
In optical path, galvanometer is provided on the reflected light path of the light combination mirror, the galvanometer lower part is connected with field lens, and the field lens gathers
Focal point is welding position.
It is further characterized by:
The pyrometer, laser generator interface end at be connected respectively mirror unit, light combination mirror seat, it is described anti-
It penetrates microscope base, be equipped with optical path cavity in light combination mirror seat, mirror holder, the reflecting mirror, light combination mirror point are respectively arranged in the optical path cavity
It is not installed in the corresponding optical path cavity by the mirror holder, the pyrometer, the interface of laser generator are right with it
The optical path cavity answered is connected, and the mirror unit, light combination mirror seat pass through connector between galvanometer and be connected to, the company
Fitting is in hollow form；
The reflecting mirror, light combination mirror, which tilt, to be installed in the corresponding optical path cavity, and the light combination mirror swashs with described
The laser beam exits direction of optical generator is in 45 ° of settings；
The reflection wavelength of the reflecting mirror is 1700nm~2000nm；The reflection wavelength of the light combination mirror is 1064nm, thoroughly
A length of 1700nm~the 2000nm of ejected wave；The connector is in hollow tubular；
A kind of temperature-controlled laser welding method, it is characterised in that: itself the following steps are included:
S1, it is close to welding two pieces of cell piece stitching portions, field lens is set to above the welding, and the focusing of the field lens
Point alignment needs on the soldered welding；
S2, laser generator issue laser beam, by being incident on light combination mirror after the optical path cavity of light combination mirror seat, laser beam
Galvanometer is reflected by the light combination mirror, and by the vibration mirror reflected to the field lens, the field lens is by laser beam focus
To suitable size, subsequent focussing force carries out laser welding in formation solder joint hot spot on the welding；
The infrared emanation reflected at pad on S3, the welding enters after sequentially passing through the field lens, galvanometer, light combination mirror
It is mapped on reflecting mirror, pyrometer is then reflexed to by the reflecting mirror and carries out temperature detection, the pyrometer is according to actual measurement temperature
Degree controls the output power of the laser generator, to realize accurate laser welding.
It is further characterized by:
In the S2, draw solder joint in mark software, by focus point motion profile be depicted as diameter be 1mm~
The helix of 1.5mm, and the diameter of the focus point is 0.25mm~1mm, the screw pitch of the helix is 0.1mm~0.2mm,
Speed of welding is 50mm/s~100mm/s, and welding times are set as 1 time；
In the S3, the welding temperature in the pyrometer is 350 DEG C~450 DEG C, and the pyrometer is according to actual measurement temperature
Degree real-time control laser output power controls temperature at weld in turn, and control frequency is 10KHZ；
The welding is platypelloid type welding.
The invention has the advantages that the laser beam that laser generator issues is reflected into galvanometer by light combination mirror, then instead
It is mapped on field lens, focussing force is focused the laser beam into after suitable size in needing on soldered welding by field lens, welding
The infrared emanation reflected at upper pad is incident on reflecting mirror along optical path return, then reflexes to pyrometer by reflecting mirror
Temperature detection is carried out, pyrometer can control the output power of laser generator according to observed temperature, to realize accurate laser
Welding not only increases welding efficiency, and the temperature of the size of controllable welding hot spot and pad, guarantees product quality.
Detailed description of the invention
Fig. 1 is schematic view of the front view of the invention；
Fig. 2 is overlooking structure diagram of the invention；
Fig. 3 is the A-A of Fig. 2 to structural schematic diagram；
Fig. 4 is schematic perspective view of the invention；
Fig. 5 is laser welding schematic diagram of the invention.
Specific embodiment
As shown in Figure 1 to 4, the present invention includes pyrometer 1 and the laser generator being connected electrically 2, laser generator 2
Lower section is equipped with the light combination mirror 3 being obliquely installed with its laser beam exits direction, is equipped with below pyrometer 1 and is arranged in parallel with light combination mirror 3
Reflecting mirror 4, light combination mirror 3 is located in the input path of reflecting mirror 4, and galvanometer 5 is provided on the reflected light path of light combination mirror 3, shakes
5 lower part of mirror is connected with field lens 6, and the focal spot of field lens 6 is welding position.
Pyrometer 1, laser generator 2 interface end at be connected respectively mirror unit 7, light combination mirror seat 8, reflecting mirror
It is equipped with optical path cavity 9 in seat 7, light combination mirror seat 8, mirror holder 10 is respectively arranged in optical path cavity 9, reflecting mirror 4, light combination mirror 3 lead to respectively
It crosses mirror holder 10 to be installed in corresponding optical path cavity 9, the corresponding optical path cavity of interface of pyrometer 1, laser generator 2
9 are connected, and mirror unit 7, light combination mirror seat 8 are connected between galvanometer 5 by connector 11, and connector 11 is in hollow tubular；
Reflecting mirror 4, light combination mirror 3 are tilted and are installed in corresponding optical path cavity 9, and light combination mirror 3 swashs with laser generator 2
Beam exit direction is in 45 ° of settings；
The reflection wavelength of reflecting mirror 4 is 1700nm~2000nm；The reflection wavelength of light combination mirror 3 is 1064nm, transmission peak wavelength
For 1700nm~2000nm.
A kind of temperature-controlled laser welding method comprising following steps:
S1, it is close to welding 14 two pieces of 13 stitching portions of cell piece, welding 14 is platypelloid type welding, and field lens 6 is set to welding
14 tops, and the focus point alignment of field lens 6 needs on soldered welding 14；
S2, solder joint 15 is drawn in mark software MarkingMate, as shown in figure 5, focus point motion profile is depicted as
Diameter is the helix of 1mm, and the diameter of focus point is 0.25mm, and the screw pitch of helix is 0.1mm, speed of welding 50mm/
S, welding times are set as 1 time；The location data precise positioning that galvanometer 5 can be provided according to camera controls completion and beats to pad
It marks on a map shape, beat requires to be 8 solder joint 1s, wherein camera is connected by cable with industrial personal computer, after camera is taken pictures, can be led to
It crosses camera and image data is issued into industrial personal computer, after industrial personal computer is handled by corresponding software, bond pad locations information is transferred to galvanometer
5, it is used as prior art principle, therefore industrial personal computer and camera are not shown in the present embodiment；
Then laser generator 2 issues laser beam, by being incident on light combination mirror 3 after the optical path cavity 9 of light combination mirror seat 8, swashs
Light beam is reflected into galvanometer 5 by light combination mirror 3, and is reflected on field lens 6 by galvanometer 5, and field lens 6 focuses the laser beam into suitable big
It is small, can also be adjusted focal beam spot by adjusting the knob 12 on laser generator 2 and pyrometer 1, subsequent focussing force in
Solder joint hot spot is formed on welding, hot spot is scanned along this helical trajectory, to carry out laser welding；
The infrared emanation reflected at pad on S3, welding 14 sequentially passes through field lens 6, galvanometer 5, light combination mirror 3 through optical path
After be incident on reflecting mirror 4, pyrometer 1 is then reflexed to by reflecting mirror 4 and carries out temperature detection, the welding temperature in pyrometer 1
Degree is set as 350 DEG C, and pyrometer 1 controls pad temperature according to the output power of observed temperature real-time control laser generator 2
Degree, and controlling frequency is 10KHZ, to realize accurate laser welding.
Claims (8)
1. a kind of temperature-controlled laser welding system, it is characterised in that: it includes pyrometer and the laser generator being connected electrically, institute
The light combination mirror for being equipped with below laser generator and being obliquely installed with its laser beam exits direction is stated, is equipped with and institute below the pyrometer
Light combination mirror reflecting mirror disposed in parallel is stated, the light combination mirror is located in the input path of the reflecting mirror, in the light combination mirror
Galvanometer is provided on reflected light path, the galvanometer lower part is connected with field lens, and the focal spot of the field lens is welding position.
2. a kind of temperature-controlled laser welding system according to claim 1, it is characterised in that: the pyrometer, laser occur
It has been connected respectively mirror unit, light combination mirror seat at the interface end of device, has been equipped with optical path in the mirror unit, light combination mirror seat
Cavity is respectively arranged with mirror holder in the optical path cavity, and the reflecting mirror, light combination mirror pass through the mirror holder respectively and be installed on corresponding institute
It states in optical path cavity, the pyrometer, the optical path cavity that the interface of laser generator is corresponding are connected, described anti-
It penetrates microscope base, light combination mirror seat, be connected to by connector between galvanometer, the connector is in hollow form.
3. a kind of temperature-controlled laser welding system according to claim 2, it is characterised in that: the reflecting mirror, light combination mirror are equal
Inclination is installed in the corresponding optical path cavity, and the laser beam exits direction of the light combination mirror and the laser generator is in
45 ° of settings.
4. a kind of temperature-controlled laser welding system according to claim 2, it is characterised in that: the reflection wavelength of the reflecting mirror
For 1700nm~2000nm；The reflection wavelength of the light combination mirror is 1064nm, transmission peak wavelength is 1700nm~2000nm；The company
Fitting is in hollow tubular.
5. a kind of temperature-controlled laser welding method of any temperature-controlled laser welding system, feature exist according to claim 1~4
In: itself the following steps are included:
S1, it is close to welding two pieces of cell piece stitching portions, field lens is set to above the welding, and the focus point pair of the field lens
Standard needs on the soldered welding；
S2, laser generator issue laser beam, and by being incident on light combination mirror after the optical path cavity of light combination mirror seat, laser beam is by institute
It states light combination mirror and is reflected into galvanometer, and by the way that in the vibration mirror reflected to the field lens, the field lens focuses the laser beam into conjunction
Suitable size, subsequent focussing force carry out laser welding in formation solder joint hot spot on the welding；
The infrared emanation reflected at pad on S3, the welding is incident on after sequentially passing through the field lens, galvanometer, light combination mirror
On reflecting mirror, pyrometer is then reflexed to by the reflecting mirror and carries out temperature detection, the pyrometer is according to observed temperature control
The output power of the laser generator is made, to realize accurate laser welding.
6. a kind of temperature-controlled laser welding method according to claim 5, it is characterised in that: soft in mark in the S2
Solder joint is drawn in part, focus point motion profile is depicted as the helix that diameter is 1mm~1.5mm, and the focus point is straight
Diameter is 0.25mm~1mm, and the screw pitch of the helix is 0.1mm~0.2mm, and speed of welding is 50mm/s~100mm/s, welding
Number is set as 1 time.
7. a kind of temperature-controlled laser welding method according to claim 5, it is characterised in that: in the S3, the high temperature
Welding temperature in meter is 350 DEG C~450 DEG C, and the pyrometer is according to observed temperature real-time control laser output power and then controls
Temperature at weld processed, control frequency are 10KHZ.
8. a kind of temperature-controlled laser welding method according to claim 5, it is characterised in that: the welding is platypelloid type weldering
Band.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910364923.8A CN109926718B (en) | 2019-04-30 | 2019-04-30 | Temperature-control laser welding system and method |
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|---|---|---|---|
| CN201910364923.8A CN109926718B (en) | 2019-04-30 | 2019-04-30 | Temperature-control laser welding system and method |
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| CN109926718A true CN109926718A (en) | 2019-06-25 |
| CN109926718B CN109926718B (en) | 2024-06-21 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113664369A (en) * | 2021-07-22 | 2021-11-19 | 深圳泰德激光科技有限公司 | Laser welding system, method, controller, and computer-readable storage medium |
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| CN103182605A (en) * | 2013-03-21 | 2013-07-03 | 常州镭赛科技有限公司 | Laser welding machine |
| CN206824823U (en) * | 2017-04-14 | 2018-01-02 | 深圳市普盛激光设备有限公司 | A kind of laser soldering device |
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| CN108044231A (en) * | 2018-01-09 | 2018-05-18 | 深圳市海目星激光智能装备股份有限公司 | A kind of laser welding head of coaxial optical path |
| CN108465933A (en) * | 2018-02-13 | 2018-08-31 | 深圳吉阳智能科技有限公司 | A kind of method and apparatus of laser welding foil and lug |
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- 2019-04-30 CN CN201910364923.8A patent/CN109926718B/en active Active
Patent Citations (7)
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|---|---|---|---|---|
| DE10343080A1 (en) * | 2003-09-17 | 2005-04-21 | Raylase Ag | Device for steering and focusing a laser beam in the direction of a target object comprises a focusing unit for focusing the laser beam, a rotating X-mirror, a rotating Y-mirror, and a stationary field mirror for receiving the deviated beam |
| CN103182605A (en) * | 2013-03-21 | 2013-07-03 | 常州镭赛科技有限公司 | Laser welding machine |
| CN206824823U (en) * | 2017-04-14 | 2018-01-02 | 深圳市普盛激光设备有限公司 | A kind of laser soldering device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113664369A (en) * | 2021-07-22 | 2021-11-19 | 深圳泰德激光科技有限公司 | Laser welding system, method, controller, and computer-readable storage medium |
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| CN109926718B (en) | 2024-06-21 |
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