CN217942183U - Reduce hand-held type laser welding device that splashes - Google Patents
Reduce hand-held type laser welding device that splashes Download PDFInfo
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- CN217942183U CN217942183U CN202221358157.8U CN202221358157U CN217942183U CN 217942183 U CN217942183 U CN 217942183U CN 202221358157 U CN202221358157 U CN 202221358157U CN 217942183 U CN217942183 U CN 217942183U
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Abstract
The utility model provides a reduce hand-held type laser welding device that splashes, including the soldered connection main part, be equipped with the laser passageway in the soldered connection main part, be equipped with collimating mirror, first frustum lens, focusing mirror and second frustum lens in proper order along the propagation direction of laser in the laser passageway. The taper angle of the first frustum lens is not equal to the taper angle of the second frustum lens. The utility model provides a hand-held type laser welding device can make the light beam form a solder joint that has cyclic annular facula + central facula through two frustum lenses, and the solder joint of this shape can produce a bigger more stable molten bath on the metal workpiece surface, changes and makes metal vapor escape; and the annular light spot can minimize the kinetic energy of escaping steam, thereby reducing splashing as much as possible. On the other hand, the shape of the weld spot makes the weld pool more stable, and no further melting occurs after the more stable weld pool is formed. The annular spot softens the material and deflects it towards the bottom of the bath, thereby significantly reducing splashing.
Description
Technical Field
The utility model belongs to the laser welding equipment field especially relates to a reduce hand-held type laser welding device that splashes.
Background
In recent years, fiber lasers have become more widely used in the field of metal welding and cutting, but in some welding applications, unsatisfactory effects still exist, such as spatter generation during welding.
After laser welding is completed, metal particles appear on the surface of the material or the workpiece, and are attached to the surface of the material or the workpiece, and the particles are generated by splashing. These particles not only scratch the base material easily, pollute the goggles of welding helmet, and pollute light filter and the ground glass piece of equipment camera to lead to the reworking of part, components and parts damage, can lead to shutting down more seriously even.
In particular, in the automobile industry, a great amount of welding of specific materials such as galvanized steel sheets, copper, aluminum and the like is needed, and the inherent advantages of the laser are sacrificed in the conventional mode of eliminating splashing, so that the processing capacity and the efficiency are greatly reduced.
For this reason, it is necessary to develop a novel laser welding apparatus capable of reducing spatter.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a hand-held type laser welding device, what produce when it can reduce the welding metal work piece splashes.
The utility model discloses a realize like this, a hand-held type laser welding device who reduces to splash, including the soldered connection main part, be equipped with the laser passageway in the soldered connection main part, its characterized in that, be equipped with collimating mirror, first frustum lens, focusing mirror and second frustum lens along the propagation direction of laser in proper order in the laser passageway; the large head end of the first frustum lens faces the collimating lens, and the small head end of the second frustum lens faces the focusing lens; and the taper angle of the first frustum lens is not equal to the taper angle of the second frustum lens.
Furthermore, a zoom lens is further arranged in the laser channel and is positioned between the collimating lens and the first frustum lens.
Furthermore, a first adjusting structure for enabling the zoom lens to move back and forth along the propagation direction of the light path is arranged on the welding head main body corresponding to the zoom lens.
Furthermore, a second adjusting structure for enabling the second cone lens to move back and forth along the propagation direction of the light path is arranged on the welding head main body corresponding to the position of the second cone lens.
Further, the taper angle of the first frustum lens and/or the second frustum lens is 5-15 degrees.
Further, the left cone angle and the right cone angle of the first frustum lens are equal; the left cone angle and the right cone angle of the second frustum lens are equal.
Compared with the prior art, the utility model, beneficial effect lies in:
the utility model provides a hand-held type laser welding device is equipped with collimating mirror, first frustum lens, focusing mirror and second frustum lens in proper order in the inside laser channel of its soldered connection main part. The two frustum lenses can enable the light beam to form a welding spot with an annular light spot and a central light spot, and the welding spot in the shape can generate a larger and more stable molten pool on the surface of the metal workpiece, so that metal vapor can escape more easily; and the annular light spot can minimize the kinetic energy of escaping steam, thereby reducing splashing as much as possible.
On the other hand, the shape of the weld spot makes the weld pool more stable, and no further melting occurs after the more stable weld pool is formed. The annular spot softens the material and deflects (dents) towards the bottom of the bath, thereby significantly reducing splashing.
Drawings
Fig. 1 is a schematic diagram of a propagation path of an internal optical path of a handheld laser welding device according to an embodiment of the present invention;
fig. 2 is a schematic view of a welding spot of a handheld laser welding device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; the two components can be directly connected or indirectly connected through an intermediate medium, and the two components can be communicated with each other. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1, a preferred embodiment of the present invention is shown, which is a handheld laser welding device with reduced splashing, including a welding head main body, a laser channel is arranged in the welding head main body, and a collimating lens 1, a zoom lens 2, a first frustum lens 3, a focusing lens 4, and a second frustum lens 5 are sequentially arranged in the laser channel along the propagation direction of laser.
The big end of the first frustum lens 3 faces the collimating lens 1, and the small end of the second frustum lens 5 faces the focusing lens 4. The taper angles of the first frustum lens 3 and the second frustum lens 5 are not equal.
In the present embodiment, the taper angles of the first frustum lens 3 and the second frustum lens 5 range from 5 degrees to 15 degrees. The left cone angle and the right cone angle of the first frustum lens 3 are equal; the left and right taper angles of the second truncated lens 5 are equal.
The variable power mirror 2 is a variable power beam expanding mirror for expanding the width of the light beam, and in the present embodiment, twice the variable power mirror 2 is used. The focal length f =110mm of the collimating mirror 1, and the focal length f =240mm of the focusing mirror 4.
In the handheld laser welding device provided by the embodiment, the two frustum lenses with unequal cone angles can enable the light beam to form a welding spot (as shown in fig. 2) with an annular light spot and a central light spot, and the welding spot with the shape can generate a larger and more stable molten pool on the surface of the metal workpiece, so that the metal vapor can escape more easily; and the annular light spot can minimize the kinetic energy of escaping steam, thereby reducing splashing as much as possible.
On the other hand, the shape of the weld spot makes the weld pool more stable, and no further melting occurs after the more stable weld pool is formed. The annular spot softens the material and deflects (dents) towards the bottom of the bath, thereby significantly reducing splashing.
The welding head body is provided with a first adjusting structure corresponding to the zoom lens 2 and used for enabling the zoom lens 2 to reciprocate along the propagation direction of the light path. By operating the first adjusting structure, the zoom lens can move leftwards or rightwards, so that the purpose of adjusting the size of the central welding spot is realized.
A second adjustment structure for reciprocating the second stage lens 5 in the optical path propagation direction is provided at a position corresponding to the second stage lens 5 on the bonding head body. By operating the second adjusting structure, the second frustum lens 5 can be moved leftwards or rightwards, so that the purpose of adjusting the size of the annular light spot is achieved.
The present embodiment is not limited to the specific shape of the first adjustment structure and the second adjustment structure, and may be, for example, a screwing structure or a linear pushing structure.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the present invention, and any modifications, equivalents, improvements, etc. made within the spirit and principles of the present invention should be included within the scope of the present invention.
Claims (6)
1. A handheld laser welding device capable of reducing splashing comprises a welding head main body, wherein a laser channel is arranged in the welding head main body, and the handheld laser welding device is characterized in that a collimating lens, a first frustum lens, a focusing lens and a second frustum lens are sequentially arranged in the laser channel along the propagation direction of laser; the large head end of the first frustum lens faces the collimating lens, and the small head end of the second frustum lens faces the focusing lens; and the taper angle of the first frustum lens is not equal to the taper angle of the second frustum lens.
2. The hand-held laser welding device of claim 1 wherein a variable power mirror is further disposed within the laser channel, the variable power mirror being positioned between the collimating mirror and the first frustum lens.
3. The hand-held laser welding device as recited in claim 2, wherein a first adjusting structure for reciprocating the variable power mirror in the propagation direction of the optical path is provided on the welding head body at a position corresponding to the variable power mirror.
4. The hand-held laser welding apparatus as claimed in any one of claims 1 to 3, wherein a second adjustment structure for reciprocating the second stage lens in the propagation direction of the optical path is provided at a position on the welding head body corresponding to the second stage lens.
5. The hand-held laser welding apparatus according to any one of claims 1 to 3, wherein the taper angle of the first frustum lens and/or the second frustum lens is 5 degrees to 15 degrees.
6. The hand-held laser welding device as defined in any one of claims 1 to 3 wherein the first frustum lens left and right cone angles are equal; the left cone angle and the right cone angle of the second frustum lens are equal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221358157.8U CN217942183U (en) | 2022-06-01 | 2022-06-01 | Reduce hand-held type laser welding device that splashes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221358157.8U CN217942183U (en) | 2022-06-01 | 2022-06-01 | Reduce hand-held type laser welding device that splashes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217942183U true CN217942183U (en) | 2022-12-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221358157.8U Active CN217942183U (en) | 2022-06-01 | 2022-06-01 | Reduce hand-held type laser welding device that splashes |
Country Status (1)
| Country | Link |
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| CN (1) | CN217942183U (en) |
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2022
- 2022-06-01 CN CN202221358157.8U patent/CN217942183U/en active Active
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