CN214602521U - Welding jig and vapor chamber laser welding device - Google Patents
Welding jig and vapor chamber laser welding device Download PDFInfo
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- CN214602521U CN214602521U CN202022489878.XU CN202022489878U CN214602521U CN 214602521 U CN214602521 U CN 214602521U CN 202022489878 U CN202022489878 U CN 202022489878U CN 214602521 U CN214602521 U CN 214602521U
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Abstract
The utility model discloses a welding jig and vapor chamber laser welding device, the device includes: an upper die jig piece and a lower die jig piece which can be pressed together; the upper die jig piece comprises an upper copper plate with a profile groove, and a first pipeline, a first heat conducting pad and first graphene which are stacked along the direction from the bottom of the profile groove to the opening of the profile groove; a welding clearance groove is formed in one side, away from the profiling groove, of the upper copper plate, the upper copper plate is provided with a liquid inlet and a liquid outlet which are communicated with a first pipeline, the first pipeline is arranged close to the bottom of the welding clearance groove, and the first graphene is used for being in thermal contact with an upper cover to be welded; the lower die jig piece comprises a lower copper plate with a profile groove, and a second pipeline, a second heat conducting pad and second graphene which are stacked along the direction from the bottom of the profile groove to the opening of the groove. The technical scheme of the utility model can rapid cooling, improve welding efficiency to and promote the stability of welding involution.
Description
Technical Field
The utility model relates to a soaking plate welding technology field especially relates to a welding jig and soaking plate laser welding device.
Background
Communication and consumer electronics products currently have a primary heat sink element to dissipate heat. For the heat dissipation element, it is not only limited to the heat dissipation function, but also needs to take into account the support function of the device housing frame. Based on this, vapor chambers are widely used. In the prior art, a soaking plate generally comprises an upper cover and a lower cover, when processing is carried out, copper plating is needed on the binding surfaces of the upper cover and the lower cover, the upper cover and the lower cover are glued and bound, and then the sealed soaking plate is obtained through brazing sealing in a high-temperature furnace. The manufacturing process of the soaking plate at least has the following defects: 1) the manufacturing of the soaking plate is complex and the cost is high; 2) the timeliness and reliability of the viscose sealing process are poor; 3) the supporting stability and the mechanical property of the copper-plated soaking plate are poor; 4) a high-temperature furnace is needed for brazing, so that the brazing time is long, the cost is high, and the efficiency is low; 5) dispensing equipment is needed, and the cost is high.
In view of the above, it is necessary to provide further improvements to the current soaking plate welding equipment.
SUMMERY OF THE UTILITY MODEL
In order to solve the above technical problem, the present invention provides a welding jig and a laser welding device for vapor chamber.
In order to achieve the above object, the utility model discloses a first technical scheme be: provided is a welding jig including: an upper die jig piece and a lower die jig piece which can be pressed together;
the upper die jig piece comprises an upper copper plate with a profile groove, and a first pipeline, a first heat conducting pad and first graphene which are stacked along the direction from the bottom of the profile groove to the opening of the profile groove; a welding clearance groove is formed in one side, away from the profiling groove, of the upper copper plate, the upper copper plate is provided with a liquid inlet and a liquid outlet which are communicated with a first pipeline, the first pipeline is arranged close to the bottom of the welding clearance groove, and the first graphene is used for being in thermal contact with an upper cover to be welded;
the lower die jig part comprises a lower copper plate with a contour groove, and a second pipeline, a second heat conducting pad and second graphene which are stacked along the direction from the bottom of the contour groove to the opening of the groove; and a welding clearance groove is formed in one side, away from the profiling groove, of the lower copper plate, the lower copper plate is provided with a liquid inlet and a liquid outlet which are communicated with a second pipeline, the second pipeline is arranged close to the bottom of the welding clearance groove, and the second graphene is used for being in thermal contact with a lower cover to be welded.
Wherein the liquid inlet and the liquid outlet are positioned on one side of the upper copper plate far away from the profiling groove, and/or
The liquid inlet and the liquid outlet are positioned on one side of the lower copper plate far away from the profiling groove.
Wherein the liquid inlet and the liquid outlet are positioned at the corner of the upper copper plate, and/or
The liquid inlet and the liquid outlet are positioned at the corner of the lower copper plate.
Wherein, the outer side wall of the upper cover to be welded is provided with an annular welding groove, the first pipeline part is close to the inner wall of the annular welding groove, and/or
The outer side wall of the lower cover to be welded is provided with an annular welding groove, and the second pipeline part is close to the inner wall of the annular welding groove.
The upper cover and the lower cover are made of stainless steel or titanium alloy.
In order to achieve the above object, the utility model discloses a second technical scheme do: provided is a vapor chamber laser welding device including:
the welding jig is used for pressing the upper cover and the lower cover;
the laser equipment is used for emitting laser and welding the upper cover and the lower cover in the jig by utilizing laser welding; and
and the blowing cooling equipment is used for blowing and cooling the welded upper cover or the welded lower cover, wherein the welding jig is the welding jig.
The technical scheme of the utility model mainly comprises an upper die jig part and a lower die jig part, wherein the upper die jig part comprises an upper copper plate with a contour groove, a first water channel pipe, a first heat conducting pad and first graphene which are stacked along the direction from the bottom of the contour groove to the opening of the groove; a welding clearance groove is formed in one side, away from the profiling groove, of the upper copper plate, the upper copper plate is provided with a water inlet and a water outlet which are communicated with a first water path pipe, the first water path pipe is arranged close to the bottom of the welding clearance groove, and the first graphene is used for being in thermal contact with the stainless steel upper cover to be welded; lower mould tool spare is including having the lower copper of profile groove, along profile groove tank bottom to notch direction fold the second water route pipe, second heat conduction pad and the second graphite alkene of establishing, through foretell scheme, can the pressfitting treat welded stainless steel upper cover and stainless steel lower cover, can also reduce welding temperature fast, improve welding efficiency, save the cost to and promote the stability of welding involution.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a flowchart of a laser welding method for vapor chamber according to an embodiment of the present invention;
fig. 2 is a schematic structural view of an upper cover and a lower cover according to an embodiment of the present invention;
FIG. 3 is a cross-sectional view taken at A-A of FIG. 2;
FIG. 4 is a schematic structural view of the upper copper plate of the present invention;
FIG. 5 is a schematic structural view of the lower copper plate of the present invention;
FIG. 6 is an exploded view of the upper and lower mold members of the present invention;
FIG. 7 is a schematic structural view of the assembled welding jig of the present invention;
fig. 8 is a schematic block diagram of the vapor chamber laser welding device of the present invention.
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
It should be noted that the description of the invention referring to "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implying any number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
Different from the welding process of the soaking plate in the prior art, at least the following defects exist: 1) the manufacturing of the soaking plate is complex and the cost is high; 2) the timeliness and reliability of the viscose sealing process are poor; 3) the supporting stability and the mechanical property of the copper-plated soaking plate are poor; 4) a high-temperature furnace is needed for brazing, so that the brazing time is long, the cost is high, and the efficiency is low; 5) need some adhesive deposite equipment, problem with high costs, the utility model provides a vapor chamber laser welding method can rapid cooling, improves production efficiency, increases the ageing and the reliability of vapor chamber involution to and reduce cost. For the specific process of the method, please refer to the steps of the following examples.
Referring to fig. 1 to 3, fig. 1 is a flowchart illustrating a method for laser welding a vapor chamber according to an embodiment of the present invention; fig. 2 is a schematic structural view of an upper cover and a lower cover according to an embodiment of the present invention; fig. 3 is a cross-sectional view taken at a-a in fig. 2. In an embodiment of the present invention, the method for laser welding a vapor chamber includes:
s10, preparing a lower cover 12 and an upper cover 11, wherein welding grooves 13 are formed in the outer side walls of the lower cover 12 and the upper cover 11;
s20, placing the upper cover 11 on the upper die jig piece, and enabling one side, provided with the welding groove 13, of the upper cover 11 to be tightly attached to the first graphene and enabling the welding groove 13 to be opposite to the welding clearance groove of the upper copper plate; placing the lower cover 12 on the lower die jig piece, enabling one side, provided with the welding groove 13, of the lower cover 12 to be tightly attached to the second graphene, enabling the welding groove 13 to be opposite to the welding clearance groove of the lower copper plate, and pressing the upper copper plate and the lower copper plate;
s30, driving laser into the welding clearance groove of the upper copper plate or the lower copper plate in a segmented mode to form a welding path so as to weld and seal the upper cover 11 and the lower cover 12;
and S40, automatically blowing air to cool the welded upper cover 11 or lower cover 12 according to the welding path to obtain the soaking plate.
In this embodiment, when laser welding is used, high heat is generated, which easily causes deformation of stainless steel products. In the scheme, the welding groove 13 is formed in the outer side surfaces (the outer side surfaces are the reverse surfaces of the binding surfaces) of the lower cover 12 and the upper cover 11, the groove depth of the welding groove 13 is shallow, the fusion welding thickness is thin during laser welding, and the temperature required by the laser welding is directly reduced. The upper cover 11 and the lower cover 12 can be positioned by pressing the upper copper plate and the lower copper plate to improve the welding stability. The welding melt is dissolved in the welding groove 13, and the welding stability is improved. When laser welding specifically, this scheme adopts laser segmentation welding to form complete welding route, so, realizes that upper cover 11 and lower cover 12 weld the involution. Just after the welding, the steel upper cover has a large amount of welding heats with lower cover 12, and this scheme is through keeping away the groove cooling processing of blowing automatically to the welding, can take away the heat rapidly, effectively prevents that lower cover 12 or upper cover from warping.
It can be understood that the soaking plate in the scheme can be made of stainless steel and can also be made of titanium alloy. That is, in this embodiment, the upper cover 11 and the lower cover 12 are made of stainless steel or titanium alloy.
Specifically, go up the graphite alkene in mould tool spare and the lower mould tool spare and can be fast with welding heat transfer to supreme copper or lower copper, avoid welding heat accumulation. Further, go up and all have the pipeline in mould tool spare and the lower mould tool spare, the pipeline sets up as close to welding groove 13 as far as possible, so, can take away the heat on copper and the lower copper rapidly. And the pipe can also prevent the welding heat from directly diffusing to the inside of the lower cover 12 or the upper cover.
Specifically, in the automatic air blowing and cooling treatment, a liquid nitrogen device or a cold air gun is adopted for air blowing and cooling. In order to rapidly lower the welding temperature of the upper cover 11 or the lower cover, the temperature of the welding groove 13 may be directly reduced by blowing air. Specifically, the liquid nitrogen can be directly blown by a liquid nitrogen device or cold air can be directly ejected by a cold air gun so as to rapidly cool. It is understood that the temperature can be reduced by other blowing devices.
Specifically, the side of the upper cover 11 or the lower cover 12 having the welding path is formed with a reinforcing rib. After welding, at least one side of the welding groove 13 may be formed with a reinforcing rib, which can reduce stress deformation to the lower cover 12 or the upper cover.
In conclusion, the vapor chamber laser welding method has at least the following advantages:
1. copper plating is not needed to be carried out on the upper cover 11 and the lower cover, so that the cost is reduced;
2. the upper cover 11 and the lower cover have better mechanical properties than the stainless steel copper-plated upper cover and the stainless steel copper-plated lower cover, and the upper cover 11 or the lower cover can be provided with reinforcing ribs, so that the stress deformation can be reduced;
3. brazing equipment is not needed, and the field space is saved; the brazing time is not needed, and the manufacturing efficiency is greatly improved;
4. the outer side walls of the upper cover 11 and the lower cover are provided with welding grooves 13, and the groove depth of the welding grooves 13 is shallow, so that the thinning design of the soaking plate is facilitated;
5. the sealing timeliness is prolonged by adopting laser welding;
6. adhesive materials are not needed, so that the cost is saved, and the environmental pollution is reduced.
Referring to fig. 3, the thickness of the upper cover 11 is 0.15mm to 0.25mm, the thickness of the lower cover 12 is 0.10mm to 0.20mm, and the depth of the welding groove 13 of the upper cover 11 or the lower cover 12 is 0.02mm to 0.09 mm. Specifically, the thickness of the lower cover 12 may be 0.10mm, 0.15mm, 0.20 mm. The thickness of the upper cover 11 can be 0.15mm, 0.20mm, 0.25 mm. In this embodiment, the thickness of the upper cover 11 is slightly larger than that of the lower cover 12. The groove depth of the welding groove 13 is preferably 0.02mm, 0.04, 0.06, 0.09mm, or the like. The depth of the welding groove 13 is shallow, facilitating laser welding. The upper cover 11 and the lower cover 12 are thinner to facilitate heat dissipation.
Referring to fig. 4 to 7, fig. 4 is a schematic structural view of the upper copper plate of the present invention; FIG. 5 is a schematic structural view of the lower copper plate of the present invention; FIG. 6 is an exploded view of the upper and lower mold members of the present invention; fig. 7 is the utility model discloses welding jig structure chart after the equipment. The embodiment of the utility model provides an in, this welding jig, include: an upper die jig piece and a lower die jig piece which can be pressed together;
the upper die jig part comprises an upper copper plate 21 with a profile groove 23, a first pipeline 31, a first heat conducting pad 41 and first graphene 51 which are stacked along the direction from the groove bottom to the notch of the profile groove 23; a welding clearance groove 27 is formed in one side, away from the contour groove 23, of the upper copper plate 21, the upper copper plate 21 is provided with a liquid inlet 24 and a liquid outlet 25 which are communicated with a first pipeline 31, the first pipeline 31 is arranged close to the bottom of the welding clearance groove 27, and the first graphene 51 is used for being in thermal contact with the upper cover 11 to be welded;
the lower die jig part comprises a lower copper plate 22 with a contour groove 23, a second pipeline 32, a second heat conducting pad 42 and second graphene 52 which are stacked along the direction from the groove bottom to the notch of the contour groove 23; a welding clearance groove 27 is formed in one side, away from the contour groove 23, of the lower copper plate 22, the lower copper plate 22 is provided with a liquid inlet 24 and a liquid outlet 25 which are communicated with a second pipeline 32, the second pipeline 32 is arranged close to the bottom of the welding clearance groove 27, and the second graphene 52 is used for being in thermal contact with the lower cover 12 to be welded.
In this embodiment, the welding jig is mainly composed of an upper mold jig and a lower mold jig. The mould tool piece includes copper 21, first pipeline 31, first heat conduction pad 41 and first graphite alkene 51, and is concrete, goes up one side of copper 21 and is equipped with the profile modeling groove 23, and first pipeline 31, first heat conduction pad 41 and first graphite alkene 51 are folded in proper order and are located the profile modeling inslot 23, and wherein, first pipeline 31 is located the tank bottom of profile modeling groove 23, and first graphite alkene 51 is located the notch in profile modeling groove 23 for with upper cover 11 thermal contact. During welding, the welding heat generated by laser welding is transmitted to the upper copper plate 21 through the first graphene 51 and the first thermal pad 41 in this order, and is diffused by the upper copper plate 21. The first and second pipes 31 and 32 may be filled with water, oil, or other liquid. In order to improve the heat radiation efficiency, the heat radiation is rapidly performed by water cooling or oil cooling through the first pipe line 31 in the upper copper plate 21. It will be appreciated that in order to further improve the efficiency of the water or oil cooling heat dissipation, the first pipe 31 is located as close as possible to the bottom of the welding clearance groove 27, i.e. to the weld of the welding recess 13. The upper copper plate 21 is provided with a liquid inlet 24 and a liquid outlet 25 which are communicated with the first pipeline 31, so that water cooling or oil cooling circulation heat dissipation can be formed, and the heat dissipation efficiency is further increased. The lower mold fixture comprises a lower copper plate 22, a second pipeline 32, a second heat conducting pad 42 and second graphene 52, and the specific structure, position and effect of the lower copper plate 22, the second pipeline 32, the second heat conducting pad 42 and the second graphene 52 are the same as those of each component in the upper mold fixture, and are not repeated here.
Specifically, the liquid inlet 24 and the liquid outlet 25 are located on one side of the upper copper plate 21 away from the profiling groove 23, so that the structural design of the upper copper plate 21 can be facilitated. In practical application, the upper copper plate 21 has a small thickness, usually 10mm, and the side surface of the upper copper plate 21 is provided with the liquid inlet 24 and the liquid outlet 25, which is beneficial to the area design of the liquid inlet 24 and the liquid outlet 25.
Specifically, the liquid inlet 24 and the liquid outlet 25 are located on one side of the lower copper plate 22 away from the contour groove 23. The lower copper plate 22 has a liquid inlet 24 and a liquid outlet 25, which are the same as those of the upper copper plate 21, and are not described in detail herein.
Furthermore, in this embodiment, the outer side surfaces of the upper copper plate 21 and the lower copper plate 22 are provided with the liquid inlet 24 and the liquid outlet 25, so that water can be injected into the pipeline more conveniently, and the heat dissipation efficiency is improved.
Specifically, the liquid inlet 24 and the liquid outlet 25 are located at the corners of the upper copper plate 21. Two corners of the upper copper plate 21 are respectively provided with a liquid inlet 24 and a liquid outlet 25, so that the water cooling or oil cooling heat dissipation area can be increased, and the heat dissipation is facilitated.
Specifically, the liquid inlet 24 and the liquid outlet 25 are located at the corner of the lower copper plate 22. The structure and function of the lower copper plate 22 having the liquid inlet 24 and the liquid outlet 25 at both corners thereof are the same as those of the upper copper plate 21.
Of course, the present embodiment may also adopt a structure in which the liquid inlet 24 and the liquid outlet 25 are respectively provided at two corners of the upper copper plate 21 and the lower copper plate 22.
Specifically, the outer side wall of the to-be-welded upper cover 11 is provided with an annular welding groove 13, and the first pipeline 31 is partially close to the inner wall of the annular welding groove 13. In this embodiment, first pipeline 31 is close to annular welding recess 13 inner wall setting, then can be favorable to water-cooling or oil-cooling heat dissipation, then can block the inside diffusion of welding heat towards upper cover 11, is favorable to reducing stress deformation.
Specifically, the outer side wall of the lower cover 12 to be welded is provided with an annular welding groove 13, and the second pipeline 32 is partially close to the inner wall of the annular welding groove 13. In this embodiment, the second pipe 32 is disposed near the inner wall of the annular welding groove 13, and functions in the same manner as the first pipe 31.
Certainly, as the whole welding jig, the parts of the first pipeline 31 and the second pipeline 32 of the scheme are respectively close to the inner wall of the annular welding groove 13, so that the whole heat dissipation efficiency is favorably improved, and the stress deformation of the soaking plate is reduced.
In order to improve the water cooling or oil cooling heat dissipation efficiency of the first pipeline 31 and the second pipeline, the first pipeline 31 and the second pipeline are made of heat conduction materials.
Please refer to fig. 8, fig. 8 is a schematic block diagram of the vapor chamber laser welding apparatus according to the present invention. The embodiment of the utility model provides an in, this soaking plate laser welding device, include:
a welding jig 100 for pressing the upper cover 11 and the lower cover 12;
a laser device 200 for emitting laser and welding the upper cover 11 and the lower cover 12 in the jig 100 by laser welding; and
the air blowing and cooling device 300 is configured to blow air to cool the welded upper cover 11 or the welded lower cover 12, wherein the welding jig 100 is the welding jig 100 described above.
Specifically, the welding jig 100 can press the upper cover 11 and the lower cover 12 to stabilize the positions of the upper cover and the lower cover, and provide the welding clearance groove 27 to facilitate laser injection welding and rapid heat dissipation of the fusion welding object by blowing cold air or cold air. The insufflation cooling device 300 includes, but is not limited to, a liquid nitrogen device, a cold air gun, and the like. Since the vapor chamber laser welding device of the present embodiment employs the welding jig 100, and the specific structure of the welding jig 100 refers to the above-mentioned embodiment, the welding device has all the advantages and effects of the welding jig 100.
The above only is the preferred embodiment of the present invention, not therefore the limitation of the patent scope of the present invention, all the technical solutions of the present invention are conceived to utilize the equivalent structure transformation made by the contents of the specification and the drawings, or directly/indirectly applied to other related technical fields all included in the patent protection scope of the present invention.
Claims (8)
1. The utility model provides a welding jig, its characterized in that, welding jig includes: an upper die jig piece and a lower die jig piece which can be pressed together;
the upper die jig piece comprises an upper copper plate with a profile groove, and a first pipeline, a first heat conducting pad and first graphene which are stacked along the direction from the bottom of the profile groove to the opening of the profile groove; a welding clearance groove is formed in one side, away from the profiling groove, of the upper copper plate, the upper copper plate is provided with a liquid inlet and a liquid outlet which are communicated with a first pipeline, the first pipeline is arranged close to the bottom of the welding clearance groove, and the first graphene is used for being in thermal contact with an upper cover to be welded;
the lower die jig part comprises a lower copper plate with a contour groove, and a second pipeline, a second heat conducting pad and second graphene which are stacked along the direction from the bottom of the contour groove to the opening of the groove; and a welding clearance groove is formed in one side, away from the profiling groove, of the lower copper plate, the lower copper plate is provided with a liquid inlet and a liquid outlet which are communicated with a second pipeline, the second pipeline is arranged close to the bottom of the welding clearance groove, and the second graphene is used for being in thermal contact with a lower cover to be welded.
2. The welding jig of claim 1, wherein the liquid inlet and the liquid outlet are located on a side of the upper copper plate away from the contour groove, and/or
The liquid inlet and the liquid outlet are positioned on one side of the lower copper plate far away from the profiling groove.
3. The welding jig of claim 1, wherein the liquid inlet and the liquid outlet are located at corners of the upper copper plate, and/or
The liquid inlet and the liquid outlet are positioned at the corner of the lower copper plate.
4. Welding jig according to claim 1, characterized in that the outer side wall of the upper cover to be welded is provided with an annular welding groove, the first pipe section is close to the inner wall of the annular welding groove, and/or
The outer side wall of the lower cover to be welded is provided with an annular welding groove, and the second pipeline part is close to the inner wall of the annular welding groove.
5. The welding fixture of claim 1, wherein the first and second pipes are made of a thermally conductive material.
6. The welding fixture of claim 1, wherein the upper cover and the lower cover are made of stainless steel or titanium alloy.
7. The vapor chamber laser welding device is characterized by comprising:
the welding jig is used for pressing the upper cover and the lower cover;
the laser equipment is used for emitting laser and welding the upper cover and the lower cover in the jig by utilizing laser welding; and
the air blowing cooling equipment is used for air blowing cooling of the welded upper cover or the welded lower cover, wherein the welding jig is the welding jig according to any one of claims 1 to 6.
8. The vapor chamber laser welding apparatus according to claim 7, wherein the gas-blowing temperature reduction device comprises a liquid nitrogen device or a cold gas gun.
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| CN202022489878.XU CN214602521U (en) | 2020-11-02 | 2020-11-02 | Welding jig and vapor chamber laser welding device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114289869A (en) * | 2022-01-07 | 2022-04-08 | 武汉华工激光工程有限责任公司 | Laser stitch welding method |
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2020
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114289869A (en) * | 2022-01-07 | 2022-04-08 | 武汉华工激光工程有限责任公司 | Laser stitch welding method |
| CN114289869B (en) * | 2022-01-07 | 2023-10-27 | 武汉华工激光工程有限责任公司 | Laser stitch welding method |
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