CN214602522U - Lens swing type laser welding device - Google Patents
Lens swing type laser welding device Download PDFInfo
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- CN214602522U CN214602522U CN202023144450.8U CN202023144450U CN214602522U CN 214602522 U CN214602522 U CN 214602522U CN 202023144450 U CN202023144450 U CN 202023144450U CN 214602522 U CN214602522 U CN 214602522U
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- laser welding
- reciprocating linear
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- collimating mirror
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Abstract
A lens swing type laser welding device comprises a laser source, a collimating mirror, a focusing mirror and a reciprocating linear motion mechanism; the reciprocating linear motion mechanism is connected with the collimating mirror, so that the off-axis height of the collimating mirror is changed periodically. The utility model discloses a make the off-axis of collimating mirror highly take place periodic change, realize the swing welding of solder joint, its simple structure, practicality, effectual. Compared with the prior art, the utility model discloses can enlarge the amplitude of oscillation, do not need accurate graduation, also need the control of high accuracy, its progressive is obvious.
Description
Technical Field
The utility model belongs to the technical field of the laser welding technique and specifically relates to a lens swing type laser welding device is related to.
Background
The laser welding is applied to the field of precision welding, has four advantages of high speed, deep molten pool, fine and beautiful welding spot and small heat influence of materials, but finds that the advantages are reversed to be the main cause of welding defects in some fields in a large number of application practices. Because the sheet metal has objective clearance tolerance, the phenomenon of welding failure can occur when the butt joint clearance of the materials exceeds the dimension of a laser focusing spot. In applications where the advantages of laser welding are sought, therefore, an oscillating welding process has emerged that increases the bath width, so long as a new widened weld bead is formed by having the melt zone dimension exceed the sheet metal gap.
The 201811427185.9 patent discloses a laser weaving welding system that achieves weaving welding by rotating a laser welding head about a Y-axis. The disadvantage of this patent is that the angle of oscillation is very small due to the amplification of the oscillating arm, which puts high demands on the angular subdivision of the drive motor. The patent application No. 201720385870.4 discloses a laser swing welding device, which realizes swing welding by the matching rotation of a plurality of scanning galvanometers. The disadvantage of this patent is that the transmission link of the laser is complex and the requirement for precision control of the system is high. Therefore, there is a need for a swing type laser welding apparatus having a simple structure and easy control.
SUMMERY OF THE UTILITY MODEL
In order to overcome the not enough in the background art, the utility model discloses a lens oscillating laser welding device adopts following technical scheme:
a lens swing type laser welding device comprises a laser source, a collimating mirror, a focusing mirror and a reciprocating linear motion mechanism, wherein the reciprocating linear motion mechanism is connected with the collimating mirror, so that the off-axis height of the collimating mirror is changed periodically.
The device also comprises a reciprocating linear motion mechanism, wherein the reciprocating linear motion mechanism is connected with the collimating mirror, so that the off-axis height of the collimating mirror is changed periodically.
Further improves the technical proposal that the reciprocating linear motion mechanism is a reciprocating linear motor.
Further improves the technical proposal that the reciprocating linear motion mechanism is a crank connecting rod mechanism driven by a motor.
According to the technical scheme, the laser welding device further comprises a 45-degree reflecting mirror.
The technical scheme is further improved, and the reflecting surface of the 45-degree reflector is plated with a reflecting film.
According to the technical scheme, the laser welding device further comprises an industrial camera, and the industrial camera is arranged on the back of the 45-degree reflector and used for observing the welding spot.
According to the technical scheme, the laser welding device further comprises a swing amplitude controller, and the swing amplitude controller is used for controlling the motion amplitude of the reciprocating linear motion mechanism.
Due to the adoption of the technical scheme, the utility model discloses following beneficial effect has:
the utility model discloses a make the off-axis of collimating mirror highly take place periodic change, realize the swing welding of solder joint, its simple structure, practicality, effectual. Compared with the prior art, the utility model discloses can enlarge the amplitude of oscillation, do not need accurate graduation, also need the control of high accuracy, its progressive is obvious.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic diagram of the present invention.
In the figure: 1. a fiber laser source; 2. a collimating mirror; 3. a 45 ° mirror; 4. a focusing mirror; 5. a reciprocating linear motor; 6. an industrial camera.
Detailed Description
Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention.
A lens swing type laser welding apparatus, as shown in FIG. 1, includes a frame, in which an optical fiber laser source 1, a collimator lens 2, a 45 DEG reflecting mirror 3, a focusing lens 4 and an industrial camera 6 are provided. A Gaussian light source emitted by the optical fiber laser source 1 is changed into parallel light after passing through the collimating lens 2, the parallel light forms a focus after being focused by the focusing lens 4, the focus has high heat energy, and a workpiece can be welded. A 45 deg. mirror 3 is arranged between the collimator lens 2 and the focusing lens 4 for changing the direction of the laser transmission link.
The laser welding device further comprises a reciprocating linear motor 5, and the reciprocating linear motor 5 is connected with the collimating mirror 2, so that the off-axis height of the collimating mirror 2 is changed periodically. As shown in fig. 2, when the collimator lens 2 is deviated upward from the axis by a certain distance H, the focus is deviated downward from the axis by a certain distance H, and the deviation distance H of the collimator lens 2 is proportional to the deviation distance H of the focus as a lever using the focusing lens 4 as a fulcrum. If the distance from the collimating mirror 2 to the focusing mirror 4 is greater than the focal length of the focusing mirror 4, and the focal point is deviated from the axis by 2mm, the distance from the axis of the collimating mirror 2 is greater than 2 mm. The focus can be understood as welding spots, and when the collimating mirror 2 moves up and down and off-axis in a reciprocating manner in a large range, the welding spots can move up and down and off-axis in a reciprocating manner in a small range, so that swing welding is realized.
The reciprocating linear motor 5 is the prior art, and the motion amplitude of the reciprocating linear motor 5 can be controlled by a swing amplitude controller. The reciprocating linear motion mechanism can also adopt a crank connecting rod mechanism, only the swing amplitude control structure of the crank connecting rod mechanism needs to occupy larger volume, and in addition, the system vibration can be caused, and the effect is not as good as that of the reciprocating linear motor 5. The use of the 45-degree reflecting mirror 3 prolongs the distance from the collimating mirror 2 to the focusing mirror 4, so that the device is more compact in structure; secondly, in order to refract the partial image, the operator can observe the welding situation through the industrial camera 6.
The part of the utility model not detailed is prior art. Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a lens swing type laser welding device, includes laser source, collimating mirror and focusing mirror, characterized by: the device also comprises a reciprocating linear motion mechanism, wherein the reciprocating linear motion mechanism is connected with the collimating mirror, so that the off-axis height of the collimating mirror is changed periodically.
2. The lens oscillating laser welding apparatus according to claim 1, wherein: the reciprocating linear motion mechanism is a reciprocating linear motor.
3. The lens oscillating laser welding apparatus according to claim 1, wherein: the reciprocating linear motion mechanism is a crank connecting rod mechanism driven by a motor.
4. The lens oscillating laser welding apparatus according to claim 1, wherein: the laser welding device also comprises a 45-degree reflecting mirror, wherein the 45-degree reflecting mirror is arranged between the collimating mirror and the focusing mirror and is used for changing the direction of the laser transmission link.
5. The lens oscillating laser welding apparatus according to claim 4, wherein: and the reflecting surface of the 45-degree reflector is plated with a reflecting film.
6. The lens oscillating laser welding apparatus according to claim 4, wherein: the laser welding device further comprises an industrial camera, and the industrial camera is arranged on the back of the 45-degree reflector and used for observing the welding spot.
7. The lens oscillating laser welding apparatus according to claim 1, wherein: the laser welding device also comprises a swing amplitude controller, and the swing amplitude controller is used for controlling the motion amplitude of the reciprocating linear motion mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023144450.8U CN214602522U (en) | 2020-12-24 | 2020-12-24 | Lens swing type laser welding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023144450.8U CN214602522U (en) | 2020-12-24 | 2020-12-24 | Lens swing type laser welding device |
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| CN214602522U true CN214602522U (en) | 2021-11-05 |
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| CN202023144450.8U Active CN214602522U (en) | 2020-12-24 | 2020-12-24 | Lens swing type laser welding device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117031754A (en) * | 2023-08-11 | 2023-11-10 | 江苏泽景汽车电子股份有限公司 | Head-up display and vehicle |
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2020
- 2020-12-24 CN CN202023144450.8U patent/CN214602522U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117031754A (en) * | 2023-08-11 | 2023-11-10 | 江苏泽景汽车电子股份有限公司 | Head-up display and vehicle |
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