CN111070700B

CN111070700B - Laser welding jig

Info

Publication number: CN111070700B
Application number: CN201911330597.5A
Authority: CN
Inventors: 方必军; 许银锋
Original assignee: Zhejiang Sunyu Zhiling Technology Co ltd
Current assignee: Zhejiang Sunyu Zhiling Technology Co ltd
Priority date: 2019-12-20
Filing date: 2019-12-20
Publication date: 2022-01-18
Anticipated expiration: 2039-12-20
Also published as: CN111070700A

Abstract

The invention relates to a laser welding jig which comprises a positioning plate (1) and a jig body (2) fixed on the positioning plate (1), wherein the jig body (2) comprises a first module (21), a second module (22) and a third module (23) which are detachably connected with the positioning plate (1) respectively; the second module (22) is located between the first module (21) and the third module (23) with a gap (24) from the first module (21) and the third module (23); and a shell mounting part (221) is arranged on the second module (22). The laser welding jig can solve the problem that the laser position and the welding surface have alignment deviation, and ensures that the welding effect meets the requirement.

Description

Laser welding jig

Technical Field

The invention relates to the technical field of optics, in particular to a laser welding jig for a plastic shell of a camera module.

Background

The existing side surface nondestructive laser welding equipment mainly comprises a laser, an optical fiber, a jig and the like. Therefore, the design of the jig directly results in the quality of laser welding. The effect of tool is the effective welding of the inferior valve on the module of realizing on-vehicle making a video recording for on-vehicle module of making a video recording reaches waterproof requirement.

Usually, there is certain machining error between the upper and lower shell of on-vehicle module of making a video recording, and the face of weld position of the upper and lower shell of the on-vehicle module of making a video recording of difference is not identical, and this will require the laser position to correspond with the face of weld all the time according to actual need to guarantee that absorbent material absorbs the extinction and generates heat and last, the effective welding of shell about realizing ensures waterproof performance.

And current laser welding tool structure is complicated, and processing is loaded down with trivial details to lead to there being great machining error, and machining error and constitution error finally can lead to laser position and face of weld to appear counterpoint deviation, and can not carry out nimble adjustment, lead to welding effect poor.

Disclosure of Invention

The invention aims to provide a laser welding jig, which solves the problem of alignment deviation between a laser position and a welding surface.

In order to achieve the purpose, the invention provides a laser welding jig which comprises a positioning plate and a jig body fixed on the positioning plate, wherein the jig body comprises a first module, a second module and a third module which are detachably connected with the positioning plate respectively;

the second module is located between the first module and the third module with a gap therebetween;

and a shell mounting part is arranged on the second module.

According to an aspect of the invention, the first module and the third module are symmetrically arranged with respect to the second module;

the first module and the third module are in direct contact to surround the second module.

According to one aspect of the invention, the first module and the third module each comprise a semicircular groove;

the gap comprises a first gap between the second module and the side wall of the semicircular groove and a second gap between the second module and the bottom of the semicircular groove;

the first gap and the second gap are in communication.

According to one aspect of the invention, the bottom of the semicircular groove is provided with a limiting opening.

According to one aspect of the invention, the positioning plate is provided with a through hole corresponding to the gap.

According to one aspect of the invention, the first module, the second module and the third module are detachably connected with the positioning plate through screws, and a thickness-adjustable component is detachably mounted between the first module, the third module and/or the second module and the positioning plate.

According to an aspect of the invention, the surfaces of the first, second and third modules constituting the gap are smooth surfaces.

According to one scheme of the invention, the jig body is modularly arranged and is divided into three independent structural components, namely the first module, the second module and the third module, so that the laser welding jig is simple to process and convenient to assemble, and can reduce processing errors and assembling errors, thereby being beneficial to solving the problem of alignment deviation between a laser position and a welding surface of a shell of the vehicle-mounted camera module, and enabling laser to reach the welding surface of the shell of the vehicle-mounted camera module along a gap.

According to one scheme of the invention, the first module, the second module and the third module are detachably connected with the positioning plate, so that the first module, the second module and the third module can be quickly replaced, and meanwhile, the relative arrangement of the second module and the first module and the third module can be adjusted, and high flexibility and high universality are realized.

According to one scheme of the invention, the first module, the second module and the third module are detachably connected with the positioning plate through screws, so that different distances among the first module, the second module, the third module and the positioning plate can be controlled by arranging gaskets with different thicknesses among the first module, the second module, the third module and the positioning plate, and the size of a second gap among the second module, the first module and the third module can be controlled, so that the aim of controlling the laser width and the laser position is fulfilled, the consistency of the laser position and a welding surface is ensured, and the welding effect is ensured.

According to an aspect of the laser welding assembly of the present invention, the surfaces of the first module, the second module, and the third module forming the gap are smooth surfaces. So can guarantee that laser can arrive the face of weld department of the on-vehicle module casing of making a video recording smoothly.

Drawings

Fig. 1 schematically shows a cross-sectional view of a laser welding jig according to an embodiment of the present invention;

FIG. 2 is a schematic view showing a structure of a jig body according to the present invention;

FIG. 3 schematically represents a perspective view of a first module according to the present invention;

FIG. 4 schematically shows a perspective view of a second module according to the present invention;

FIG. 5 schematically shows a perspective view of a third module according to the present invention;

fig. 6 schematically shows a bottom view of a laser welding jig according to the present invention;

fig. 7 schematically shows a view for welding a vehicle-mounted camera module housing using the laser welding jig of the present invention.

The reference numerals in the drawings represent the following meanings:

1. and (7) positioning the plate. 2. A jig body. 21. A first module. 22. A second module. 23. And a third module. 221. A housing mounting portion. 23. A gap. 3. A semicircular groove. 241. A first gap. 242. A second gap. 31. Limiting the opening.

Detailed Description

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

In describing embodiments of the present invention, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship that is based on the orientation or positional relationship shown in the associated drawings, which is for convenience and simplicity of description only, and does not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, the above-described terms should not be construed as limiting the present invention.

The present invention is described in detail below with reference to the drawings and the specific embodiments, which are not repeated herein, but the embodiments of the present invention are not limited to the following embodiments.

As shown in fig. 1, the laser welding jig of the present invention includes a positioning plate 1 and a jig body 2 fixed on the positioning plate 1.

Specifically, as shown in fig. 1 to 6, the jig body 2 of the present invention includes a first module 21, a second module 22, and a third module 23. The first module 21, the second module 22 and the third module 23 are detachably connected to the positioning plate 1. And the second module 22 is located between the first module 21 and the third module 23, there being a gap 24 between the second module 22 and the first module 21 and the third module 23. The second module 22 is provided with a housing mounting portion 221 for mounting an on-vehicle camera module housing a requiring laser welding.

According to the laser welding jig disclosed by the invention, the jig body 2 is modularly arranged and is divided into three independent structural components, namely the first module 21, the second module 22 and the third module 23, so that the laser welding jig is simple to process and convenient to assemble, and can reduce processing errors and assembling errors, thereby being beneficial to solving the problem of alignment deviation between a laser position and a welding surface of a shell of a vehicle-mounted camera module, enabling laser to reach the welding surface of the shell of the vehicle-mounted camera module along the gap 24, ensuring that the laser can accurately reach the welding surface due to the existence of the gap 24, and simultaneously ensuring that the laser can be uniformly spread along the gap 24.

In addition, according to the laser welding jig disclosed by the invention, the first module 21, the second module 22 and the third module 23 are detachably connected with the positioning plate 1, so that the first module 21, the second module 22 and the third module 23 can be quickly replaced, meanwhile, the relative arrangement of the second module 22 and the first module 21 and the third module 23 can be adjusted, and high flexibility and high universality are realized.

As shown in fig. 2 to 5, the first module 21 and the third module 23 of the present invention are symmetrically disposed about the second module 22. The first module 21 and the third module 23 are in direct contact to surround the second module 22. According to the concept of the present invention, the outer dimensions of the first module 21, the second module 22 and the third module 23 can be designed according to specific requirements.

In the present embodiment, the first module 21 and the third module 23 are mirror image components, and both have the same size. The first module 21 and the third module 23 both comprise semicircular grooves 3, the semicircular grooves 3 of the first module 21 and the second module 23 jointly form a circular groove, and the second module 22 is located in the circular groove.

As shown in fig. 1 to 5, in the laser welding jig of the present invention, the gap 24 includes a first gap 241 and a second gap 242 that are communicated with each other. Wherein the first gap 241 is located between the second module 22 and the side wall of the circular groove 3 and the second gap 242 is located between the second module 22 and the bottom of the circular groove. As shown in fig. 1, according to an embodiment of the present invention, a sloped transition surface is provided at the junction of the first gap 241 and the second gap 242, which facilitates uniform laser energy propagating through the gaps, thereby ensuring welding results.

According to one embodiment of the invention, the bottom of the semicircular groove 3 of the invention is provided with a limiting opening 31. For limiting the on-board camera module housing a when placed in the housing mounting portion 221 of the second module 22.

Referring to fig. 1 and 7, according to an embodiment of the present invention, the positioning plate 1 is provided with a through hole corresponding to the gap 24. When carrying out laser welding to on-vehicle module casing A of making a video recording, meet laser emitter's optic fibre pipe g setting with the up end mouth of clearance 24 in the through-hole for laser reaches the face of weld along clearance 24. Specifically, one of the upper and lower shells of the vehicle-mounted camera module is made of a transparent material, the other one of the upper and lower shells is made of an absorbing material, laser reaches the absorbing material through the transparent material, the absorbing material absorbs, generates heat and melts, the absorbing material and the absorbing material are melted into a whole, internal welding is achieved, the laser is internal laser, the absorbing material is selected according to the structure of the module, and when the upper and lower shells are in butt joint, the absorbing material is arranged on the inner side. The laser can be external laser, so that the upper shell and the lower shell are directly melted and welded, and the material of the upper shell and the lower shell is not required.

As shown in fig. 1 and 7, the laser reaches the welding surface through the gap 24, so that the position of the laser, which is finally reached, can be controlled by controlling the size of the gap, so that the laser position can be always ensured to correspond to the welding surface, and a good welding effect can be achieved.

Specifically, as shown in fig. 6, according to an embodiment of the present invention, the first module 21, the second module 22 and the third module 23 are detachably connected to the positioning board 1 by screws, so that different distances between the first module 21, the second module 22, the third module 23 and the positioning board 1 can be controlled by disposing spacers with different thicknesses between the first module 21, the second module 22, the third module 23 and the positioning board 1, and thus the size of the second gap 242 between the second module 22 and the first module 21, the third module 23 can be controlled, so as to achieve the purpose of controlling the laser width and the laser position.

Of course, according to the concept of the present invention, the position that the laser reaches finally is controlled by controlling the size of the gap, a detachable thickness-adjustable component may be further disposed between the second module 22 and the positioning plate 1, and the distance between the second module 22 and the positioning plate 1 is controlled by adjusting the thickness of the thickness-adjustable component, that is, the width of the second gap 242 between the second module 22 and the first and

third modules

21 and 23 may be controlled by adjusting the thickness of the thickness-adjustable component, and the purpose of controlling the laser width and the laser position may also be achieved, so as to ensure the consistency of the laser position and the welding surface and ensure the welding effect. Detachable thickness-adjustable components can be arranged between the first module 21 and the third module 23 and the positioning plate 1, and the width of the second gap 242 between the first module 21, the third module 33 and the second module 22 can be controlled by adjusting the thickness of the thickness-adjustable components, so that the purpose of controlling the laser width and the laser reaching position can be realized. Of course, it is also possible to provide detachable thickness-adjustable components between the first module 21, the second module 22 and the third module 23 and the positioning plate 1 at the same time, and it is also possible to control the laser width and the laser arrival position.

In the laser welding assembly of the present invention, the surfaces of the first block 21, the second block 22 and the third block 23 constituting the gap 24 are smooth surfaces, that is, the surfaces on both sides of the gap 24 are provided with smooth surfaces. So can guarantee that laser can arrive the face of weld department of the on-vehicle module casing of making a video recording smoothly.

The above description is only one embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A laser welding jig is characterized by comprising a positioning plate (1) and a jig body (2) fixed on the positioning plate (1), wherein the jig body (2) comprises a first module (21), a second module (22) and a third module (23) which are detachably connected with the positioning plate (1) respectively;

the second module (22) is located between the first module (21) and the third module (23) with a gap (24) from the first module (21) and the third module (23);

a shell mounting part (221) is arranged on the second module (22);

the first module (21) and the third module (23) each comprise a semicircular groove (3);

the gap (24) comprises a first gap (241) between the second module (22) and the side wall of the semicircular groove (3) and a second gap (242) between the second module (22) and the bottom of the semicircular groove (3);

the first gap (241) and the second gap (242) communicate.

2. The laser welding jig according to claim 1, characterized in that the first module (21) and the third module (23) are symmetrically arranged with respect to the second module (22);

the first module (21) and the third module (23) are in direct contact and surround the second module (22).

3. The laser welding jig according to claim 1 or 2, characterized in that the groove bottom of the semicircular groove (3) is provided with a limit opening (31).

4. The laser welding jig according to claim 1, characterized in that the positioning plate (1) is provided with a through hole corresponding to the gap (24).

5. The laser welding jig according to claim 1, characterized in that the first module (21), the second module (22) and the third module (23) are detachably connected with the positioning plate through screws, and a thickness-adjustable component is detachably mounted between the first module (21), the third module (23) and/or the second module (22) and the positioning plate (1).

6. The laser welding jig according to claim 1, characterized in that the surfaces of the first module (21), the second module (22), and the third module (23) that constitute the gap (24) are smooth surfaces.