Vapor chamber welding jig and mobile terminal assembling equipment

Abstract

The utility model provides a vapor chamber welding jig and a mobile terminal assembling device, and the vapor chamber welding jig comprises a bottom plate used for fixing a middle frame; the first cover plate assembly is used for fixing the vapor chamber, the first cover plate assembly comprises a first cover plate and a plurality of first pressing heads arranged on the first cover plate, and the first pressing heads are sequentially arranged in the circumferential direction of the first cover plate; the second cover plate assembly is used for fixing the vapor chamber, the second cover plate assembly comprises a second cover plate and a plurality of second pressing heads arranged on the second cover plate, the second pressing heads are sequentially arranged in the circumferential direction of the second cover plate, and the second pressing heads are arranged in a staggered mode relative to the first pressing heads; by adopting the technical scheme, the vapor chamber welding jig provided by the embodiment adopts the two cover plates to sequentially abut against the welding spots at different positions of the vapor chamber, and spot welding is sequentially carried out, so that the problem of mutual interference of pressure heads due to the fact that two adjacent welding spots are too close is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of mobile terminal assembly equipment, and more specifically, to a heat pipe welding fixture and a mobile terminal assembly equipment. Background Art

[0002] At present, in the field of mobile terminal assembly, in order to improve the firmness of the connection between the heat pipe and the middle frame and the heat dissipation performance, it is necessary to weld the heat pipe to the middle frame; however, in order to improve the welding accuracy, it is necessary to arrange dense welding points on the heat pipe. Since the heat pipe needs to be pressed by a pressing head around the welding points before welding, and the distance between two adjacent welding points is too close, it will cause interference between adjacent pressing heads when pressing the heat pipe, resulting in the inability to perform the pressing operation on the dense welding points. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a heat pipe welding fixture and a mobile terminal assembly equipment, so as to solve the technical problem that adjacent pressing heads are prone to interference when welding dense welding points of the heat pipe in the prior art.

[0004] To achieve the above purpose, the technical solution adopted by the utility model is:

[0005] In the first aspect, a heat pipe welding fixture is provided, including

[0006] A bottom plate for fixing the middle frame;

[0007] A first cover plate assembly for fixing the heat pipe, the first cover plate assembly includes a first cover plate and a plurality of first pressing heads arranged on the first cover plate, and the plurality of first pressing heads are arranged in sequence along the circumferential direction of the first cover plate;

[0008] A second cover plate assembly for fixing the heat pipe, the second cover plate assembly includes a second cover plate and a plurality of second pressing heads arranged on the second cover plate, and the plurality of second pressing heads are arranged in sequence along the circumferential direction of the second cover plate, and the second pressing heads are arranged in a staggered manner relative to the first pressing heads;

[0009] Wherein, the first cover plate and the second cover plate are sequentially butted against the bottom plate, and the first pressing head presses against the odd-numbered welding points among the plurality of welding points of the heat pipe when the first cover plate is butted against the bottom plate, and the second pressing head presses against the even-numbered welding points among the plurality of welding points of the heat pipe when the second cover plate is butted against the bottom plate.

[0010] By adopting the above technical solution, the heat pipe welding fixture provided in this embodiment uses two cover plates to sequentially press the welding points at different positions of the heat pipe, and performs spot welding in sequence, reducing the problem of interference between pressing heads caused by the proximity of two adjacent welding points.

[0011] In one embodiment, a first gap is reserved between two adjacent ones of the first pressing heads, the first gap being smaller than the width of the second pressing head, and a second gap is reserved between two adjacent ones of the second pressing heads, the second gap being smaller than the width of the first pressing head.

[0012] By adopting the above technical solution, the density of the solder joints welded by the heat sink welding fixture is further improved.

[0013] In one embodiment, the first pressing head includes a first pressing head body, a first welding through hole penetrating through the first pressing head body, and a first pressing block disposed on the first pressing head body. The first pressing block is located on the surface of the first pressing head body for docking with the bottom plate, and the first pressing block is disposed adjacent to the first welding through hole; the second pressing head includes a second pressing head body, a second welding through hole penetrating through the second pressing head body, and a second pressing block disposed on the second pressing head body. The second pressing block is located on the surface of the second pressing head body for docking with the bottom plate, and the second pressing block is disposed adjacent to the second welding through hole.

[0014] By adopting the above technical solution, the portions around the solder joints of the heat sink are pressed by the first pressing head and the second pressing head.

[0015] In one embodiment, the first pressing head includes at least two of the first pressing blocks, and the at least two first pressing blocks are respectively arranged on both sides of the first welding through hole; the second pressing head includes at least two of the second pressing blocks, and the at least two second pressing blocks are respectively arranged on both sides of the second welding through hole.

[0016] By adopting the above technical solution, the stability during the fixation of the heat sink is further improved.

[0017] In one embodiment, the heat sink welding fixture further includes a fixing component, the fixing component is respectively disposed on the first cover component and the second cover component, the fixing component includes a first vacuum device, and the first vacuum device is provided with a plurality of adsorption holes for adsorbing the heat sink, and a negative pressure is formed in the adsorption holes to adsorb the heat sink.

[0018] By adopting the above technical solution, the flexibility of the movement of the heat sink is improved.

[0019] In one embodiment, the fixing component further includes a first elastic member, one end of the first elastic member is respectively connected to the first cover and the second cover, and the other end of the first elastic member is connected to the first vacuum device.

[0020] By adopting the above technical solution, due to the thin thickness of the heat sink, the above design can reduce the possibility of damage to the heat sink.

[0021] In one embodiment, the heat pipe welding jig further includes a shaping component, which includes a shaping plate and a sensing device. The shaping plate is provided with shaping openings corresponding to the middle frame or the heat pipe, and the sensing device is used to sense the middle frame or the heat pipe in the shaping openings.

[0022] By adopting the above technical solution, the accuracy of the alignment of the middle frame or the heat pipe is improved.

[0023] In one embodiment, the shaping component further includes a second elastic member. One end of the second elastic member is respectively connected to the first cover plate and the second cover plate, and the other end of the second elastic member is connected to the shaping plate.

[0024] By adopting the above technical solution, the second elastic member is used to buffer the reaction force when the shaping plate contacts the bottom plate, reducing the possibility of damage to the shaping plate.

[0025] In one embodiment, the heat pipe welding jig further includes an auxiliary assembly base, which is used to carry the bottom plate. The auxiliary assembly base is provided with a second vacuum device for vacuum adsorbing the heat pipe, and the second vacuum device is arranged on the surface of the auxiliary assembly base where it is in contact with the bottom plate.

[0026] By adopting the above technical solution, the second vacuum device is used to vacuum adsorb the heat pipe located on the bottom plate, making the heat pipe more stable when placed on the middle frame.

[0027] In a second aspect, a mobile terminal assembly device is provided, which includes a welding device and the above-mentioned heat pipe welding jig, and the welding device is used to weld the heat pipe on the heat pipe welding jig.

[0028] By adopting the above technical solution, on the basis of the advantages of the heat pipe welding jig in the above embodiment, the mobile terminal assembly device in this embodiment also has the advantage of high welding strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0030] Figure 1 is a three-dimensional structure diagram of the heat pipe welding jig provided by the embodiment of the present invention.

[0031] Figure 2It is an exploded view of the heat sink welding fixture provided by the embodiment of the present utility model.

[0032] Figure 3 It is a top view schematic diagram of the heat sink and the middle frame provided by the embodiment of the present utility model.

[0033] Figure 4 It is a three-dimensional structure diagram of the first pressing head provided by the embodiment of the present utility model.

[0034] Figure 5 It is a three-dimensional structure diagram of the fixing component provided by the embodiment of the present utility model.

[0035] Figure 6 It is a three-dimensional structure diagram of the shaping component provided by the embodiment of the present utility model.

[0036] The reference numerals in the figure are as follows:

[0037] 1, bottom plate; 2, first cover plate assembly; 3, second cover plate assembly; 4, fixing component; 5, shaping component; 6, auxiliary assembly base;

[0038] 10, middle frame; 20, heat sink; 30, single solder joint; 40, double solder joint; 21, first cover plate; 22, first pressing head; 41, first vacuum device; 42, adsorption hole; 43, first elastic member; 51, shaping opening; 52, second elastic member; 61, second vacuum device;

[0039] 221, first gap; 222, first pressing head body; 223, first welding through hole; 224, first pressing block. Detailed implementation manners

[0040] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0041] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as "connected to" another element, it can be directly connected or indirectly connected to the other element.

[0042] It should be understood that the orientation or positional relationship indicated by terms such as "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model, rather than indicating that the device or component must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.

[0043] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating relative importance or indicating the quantity of technical features. In the description of the present utility model, the meaning of "a plurality of" is two or more, unless otherwise specifically defined. The following describes the specific implementation of the present utility model in more detail with reference to specific embodiments:

[0044] As Figures 1 to 3 shown, a heat sink welding jig provided by an embodiment of the present utility model is used to fix the heat sink during heat sink welding; the heat sink welding jig provided in this embodiment uses two cover plates to sequentially press against the solder joints at different positions of the heat sink, and spot welding is performed sequentially, reducing the problem of mutual interference of the pressing heads caused by the adjacent two solder joints being too close; the following is described through specific embodiments:

[0045] The heat sink welding jig includes:

[0046] A bottom plate 1 for fixing the middle frame 10;

[0047] A first cover plate assembly 2 for fixing the heat sink 20. The first cover plate assembly 2 includes a first cover plate 21 and a plurality of first pressing heads 22 provided on the first cover plate 21. The plurality of first pressing heads 22 are sequentially arranged along the circumferential direction of the first cover plate 21;

[0048] A second cover plate assembly for fixing the heat sink 20. The second cover plate assembly includes a second cover plate and a plurality of second pressing heads provided on the second cover plate. The plurality of second pressing heads are sequentially arranged along the circumferential direction of the second cover plate, and the second pressing heads are arranged in a staggered manner relative to the first pressing heads 22;

[0049] Among them, the first cover plate 21 and the second cover plate are sequentially butted against the bottom plate 1. When the first cover plate 21 is butted against the bottom plate 1, the first pressing heads 22 press against the odd-numbered solder joints 30 among the plurality of solder joints of the heat sink 20, and when the second cover plate is butted against the bottom plate 1, the second pressing heads press against the even-numbered solder joints 40 among the plurality of solder joints of the heat sink 20.

[0050] Here, it can be understood that the bottom plate 1 refers to a plate-like structure for carrying the middle frame 10; in this embodiment, the middle frame 10 is a frame structure of a mobile terminal. Generally, the middle frame 10 refers to a frame with openings in the middle. The vapor chamber 20 is welded to the middle frame 10 to improve the heat dissipation performance of the middle frame 10 and the components of the mobile terminal connected to the middle frame 10. Here, the mobile terminal includes, but is not limited to, a mobile phone or a tablet computer; the ways for the bottom plate 1 to fix the middle frame 10 include, but are not limited to, vacuum adsorption fixation or magnetic adsorption fixation;

[0051] The first cover plate assembly 2 refers to an assembly for fixing the vapor chamber 20; the first cover plate assembly 2 includes a first cover plate 21 and a plurality of first pressing heads 22. Here, the first cover plate 21 refers to a cover plate for driving the plurality of first pressing heads 22 to move, and the first cover plate 21 can also have the functions of fixing and moving the vapor chamber 20; a plurality of second pressing heads are arranged in sequence along the circumferential direction of the second cover plate, and the positions of the plurality of second pressing heads are adapted to the arrangement of the solder joints on the vapor chamber 20. The edge of the vapor chamber 20 is used for welding with the middle frame 10. Therefore, a plurality of solder joints of the vapor chamber 20 are arranged along the edge of the vapor chamber 20;

[0052] The second cover plate assembly refers to an assembly for fixing the vapor chamber 20; the second cover plate assembly includes a second cover plate and a plurality of second pressing heads. Here, the second cover plate refers to a cover plate for driving the plurality of second pressing heads to move, and the second cover plate can also have the functions of fixing and moving the vapor chamber 20; a plurality of second pressing heads are arranged in sequence along the circumferential direction of the second cover plate, and the positions of the plurality of second pressing heads are adapted to the arrangement of the solder joints on the vapor chamber 20. The second pressing heads are arranged in a staggered manner with the first pressing heads 22, so that the second pressing heads and the first pressing heads 22 respectively press the solder joints at different positions;

[0053] Among them, the working principle of the vapor chamber 20 welding jig in this embodiment is as follows: The first cover plate 21 and the second cover plate are sequentially butted with the bottom plate 1. The first cover plate 21 drives the plurality of first pressing heads 22 to press against the solder joints of the vapor chamber 20. Among them, a plurality of solder joints of the vapor chamber 20 are sequentially sorted along the circumferential direction, and are divided into odd-numbered solder joints 30 and even-numbered solder joints 40, and the odd-numbered solder joints 30 and the even-numbered solder joints 40 are alternately arranged; the first pressing heads 22 press against the odd-numbered solder joints 30 among the plurality of solder joints of the vapor chamber 20 when the first cover plate 21 is butted with the bottom plate 1; the second cover plate drives the plurality of second pressing heads to press against the solder joints of the vapor chamber 20, and the second pressing heads press against the even-numbered solder joints 40 among the plurality of solder joints of the vapor chamber 20 when the second cover plate is butted with the bottom plate 1.

[0054] By adopting the above technical solution, the vapor chamber 20 welding jig provided in this embodiment uses two cover plates to sequentially press the solder joints at different positions of the vapor chamber 20, and performs spot welding sequentially, reducing the problem of mutual interference of the pressing heads caused by the adjacent two solder joints being too close.

[0055] In one embodiment, a first gap 221 is reserved between two adjacent first press heads 22. The first gap 221 is smaller than the width of the second press head. A second gap is reserved between two adjacent second press heads, and the second gap is smaller than the width of the first press head 22.

[0056] Here, it can be understood that the smaller the first gap 221 between two adjacent first press heads 22, the smaller the distance between two adjacent odd-numbered solder joints 30. The width of the second press head refers to the dimension parallel to the connection line between two adjacent second press heads. The fact that the first gap 221 is smaller than the width of the second press head means that the first press head 22 and the second press head cannot be arranged side by side, and interference will occur if the first press head 22 and the second press head are forced to be arranged side by side. Similarly, the smaller the second gap between two adjacent second press heads, the smaller the distance between two adjacent even-numbered solder joints 40. The width of the first press head 22 refers to the dimension parallel to the connection line between two adjacent first press heads 22. The fact that the second gap is smaller than the width of the first press head 22 means that the first press head 22 and the second press head cannot be arranged side by side, and interference will occur if the first press head 22 and the second press head are forced to be arranged side by side.

[0057] By adopting the above technical solution, the density of the solder joints welded by the heat sink 20 welding jig is further improved.

[0058] Please also refer to Figure 4 In one embodiment, the first press head 22 includes a first press head main body 222, a first welding through hole 223 penetrating through the first press head main body 222, and a first pressing block 224 provided on the first press head main body 222. The first pressing block 224 is located on the surface of the first press head main body 222 for docking with the bottom plate 1, and the first pressing block 224 is adjacent to the first welding through hole 223. The second press head includes a second press head main body, a second welding through hole penetrating through the second press head main body, and a second pressing block provided on the second press head main body. The second pressing block is located on the surface of the second press head main body for docking with the bottom plate 1, and the second pressing block is adjacent to the second welding through hole.

[0059] Here, it can be understood that the first press head main body 222 is the main body structure for driving the movement of the first welding through hole 223 and the first pressing block 224; the first welding through hole 223 is aligned with the solder joint and is used for the welding device to weld; the first pressing block 224 is the pressing block for pressing around the solder joint of the heat sink 20; the second press head main body is the main body structure for driving the movement of the second welding through hole and the second pressing block; the second welding through hole is aligned with the solder joint and is used for the welding device to weld; the second pressing block is the pressing block for pressing around the solder joint of the heat sink 20.

[0060] By adopting the above technical solution, the first press head 22 and the second press head are used to press the parts around the solder joints of the heat sink 20.

[0061] In one embodiment, the first pressing head 22 includes at least two first pressing blocks 224, and the at least two first pressing blocks 224 are respectively arranged on both sides of the first welding through hole 223; the second pressing head includes at least two second pressing blocks, and the at least two second pressing blocks are respectively arranged on both sides of the second welding through hole.

[0062] Here, it can be understood that the at least two first pressing blocks 224 respectively press against different parts around the solder joints of the heat sink 20, improving the stability during the fixation of the heat sink 20; the at least two second pressing blocks respectively press against different parts around the solder joints of the heat sink 20, improving the stability during the fixation of the heat sink 20.

[0063] By adopting the above technical solution, the stability during the fixation of the heat sink 20 is further improved.

[0064] Please refer to Figure 5 simultaneously. In one embodiment, the heat sink welding fixture further includes a fixing component 4. The fixing component 4 is respectively arranged on the first cover plate component 2 and the second cover plate component. The fixing component 4 includes a first vacuum device 41. The first vacuum device 41 is provided with a plurality of adsorption holes 42 for adsorbing the heat sink 20, and a negative pressure is formed in the adsorption holes 42 to adsorb the heat sink 20.

[0065] Here, it can be understood that the fixing component 4 fixes the heat sink 20 by means of vacuum adsorption; the fixing component 4 includes a first vacuum device 41, and the first vacuum device 41 is provided with a plurality of adsorption holes 42, and a negative pressure is formed in the adsorption holes 42 to adsorb the heat sink 20; the fixing component 4 can move the heat sink 20 to the target position and then release the vacuum state, so that the heat sink 20 is placed on the target position, for example, placing the heat sink 20 on the middle frame 10.

[0066] By adopting the above technical solution, the flexibility of the movement of the heat sink 20 is improved.

[0067] In one embodiment, the fixing component 4 further includes a first elastic member 43. One end of the first elastic member 43 is respectively connected to the first cover plate 21 and the second cover plate, and the other end of the first elastic member 43 is connected to the first vacuum device 41.

[0068] Here, it can be understood that the first elastic member 43 is used to buffer the reaction force when the first vacuum device 41 is released from the bottom plate 1, and the first elastic member 43 applies an elastic force to the heat sink 20 on the first vacuum device 41, so that the heat sink 20 can press against the middle frame 10.

[0069] By adopting the above technical solution, since the thickness of the heat sink 20 is thin, the above design can reduce the possibility of damage to the heat sink 20.

[0070] In one embodiment, the heat sink welding fixture further includes a shaping component 5. The shaping component 5 includes a shaping plate and a sensing device. The shaping plate is provided with shaping openings 51 corresponding to the middle frame 10 or the heat sink 20. The sensing device is used to sense the middle frame 10 or the heat sink 20 in the shaping openings 51.

[0071] Here, it can be understood that the shaping component 5 refers to a component used to sense whether the middle frame 10 or the heat sink 20 is in a proper position. The shaping plate is provided with shaping openings 51, and the shaping openings 51 match the shapes of the middle frame 10 or the heat sink 20. The sensing device generally senses the middle frame 10 or the heat sink 20 by means of image recognition. Specifically, when the image obtained by the sensing device from the shaping openings 51 is missing parts, it means that the middle frame 10 or the heat sink 20 has shifted and needs to be readjusted.

[0072] By adopting the above technical solution, the alignment accuracy of the middle frame 10 or the heat sink 20 is improved.

[0073] In one embodiment, the shaping component 5 further includes a second elastic member 52. One end of the second elastic member 52 is respectively connected to the first cover plate 21 and the second cover plate, and the other end of the second elastic member 52 is connected to the shaping plate.

[0074] By adopting the above technical solution, the second elastic member 52 is used to buffer the reaction force when the shaping plate contacts the bottom plate 1, reducing the possibility of damage to the shaping plate.

[0075] Please refer to again Figure 2 In one embodiment, the heat sink welding fixture further includes an auxiliary assembly base 6. The auxiliary assembly base 6 is used to carry the bottom plate 1. The auxiliary assembly base 6 is provided with a second vacuum device 61 for vacuum adsorbing the heat sink 20. The second vacuum device 61 is arranged on the surface of the auxiliary assembly base 6 where it is in contact with the bottom plate 1.

[0076] By adopting the above technical solution, the second vacuum device 61 is used to vacuum adsorb the heat sink 20 located on the bottom plate 1, making the heat sink 20 more stable when placed on the middle frame 10.

[0077] In a second aspect, a mobile terminal assembly device is provided, including a welding device and the above heat sink welding fixture. The welding device is used to weld the heat sink 20 on the heat sink welding fixture.

[0078] By adopting the above technical solution, on the basis of having the advantages of the heat sink welding fixture in the above embodiments, the mobile terminal assembly device in this embodiment also has the advantage of high welding firmness.

[0079] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A heat pipe welding fixture, characterized in that, Comprising: A bottom plate for fixing the middle frame; A first cover plate assembly for fixing the heat sink plate. The first cover plate assembly includes a first cover plate and a plurality of first pressing heads provided on the first cover plate, and the plurality of first pressing heads are arranged in sequence along the circumferential direction of the first cover plate; A second cover plate assembly for fixing the heat sink plate. The second cover plate assembly includes a second cover plate and a plurality of second pressing heads provided on the second cover plate, and the plurality of second pressing heads are arranged in sequence along the circumferential direction of the second cover plate. The second pressing heads are arranged in a staggered manner relative to the first pressing heads; Wherein, the first cover plate and the second cover plate are sequentially docked with the bottom plate. When the first cover plate is docked with the bottom plate, the first pressing heads press against the odd-numbered solder joints among the plurality of solder joints of the heat sink plate, and when the second cover plate is docked with the bottom plate, the second pressing heads press against the even-numbered solder joints among the plurality of solder joints of the heat sink plate.

2. The heat sink welding fixture according to claim 1, wherein A first gap is reserved between two adjacent first pressing heads, and the first gap is smaller than the width of the second pressing head. A second gap is reserved between two adjacent second pressing heads, and the second gap is smaller than the width of the first pressing head.

3. The heat sink welding fixture according to claim 1, wherein The first pressing head includes a first pressing head body, a first welding through hole penetrating the first pressing head body, and a first pressing block provided on the first pressing head body. The first pressing block is located on the surface of the first pressing head body for docking with the bottom plate, and the first pressing block is adjacent to the first welding through hole; the second pressing head includes a second pressing head body, a second welding through hole penetrating the second pressing head body, and a second pressing block provided on the second pressing head body. The second pressing block is located on the surface of the second pressing head body for docking with the bottom plate, and the second pressing block is adjacent to the second welding through hole.

4. The heat sink welding jig according to claim 3, wherein The first pressing head includes at least two first pressing blocks, and the at least two first pressing blocks are respectively arranged on both sides of the first welding through hole; the second pressing head includes at least two second pressing blocks, and the at least two second pressing blocks are respectively arranged on both sides of the second welding through hole.

5. The heat sink welding fixture according to any one of claims 1 to 4, characterized in that, The heat sink plate welding fixture further includes a fixing component, and the fixing component is respectively provided on the first cover plate assembly and the second cover plate assembly. The fixing component includes a first vacuum device, and the first vacuum device is provided with a plurality of adsorption holes for adsorbing the heat sink plate, and a negative pressure is formed in the adsorption holes to adsorb the heat sink plate.

6. The heat sink welding fixture according to claim 5, characterized in that, The fixing component further includes a first elastic member. One end of the first elastic member is respectively connected to the first cover plate and the second cover plate, and the other end of the first elastic member is connected to the first vacuum device.

7. The heat sink welding fixture according to any one of claims 1 to 4, characterized in that The heat sink plate welding fixture further includes a shaping component, and the shaping component includes a shaping plate and an induction device. The shaping plate is provided with shaping openings corresponding to the middle frame or the heat sink plate, and the induction device is used to sense the middle frame or the heat sink plate in the shaping openings.

8. The heat sink welding jig according to claim 7, wherein, The shaping component further includes a second elastic member. One end of the second elastic member is respectively connected to the first cover plate and the second cover plate, and the other end of the second elastic member is connected to the shaping plate.

9. The heat sink welding fixture according to any one of claims 1 to 4, characterized in that, The heat sink welding fixture further includes an auxiliary assembly base for carrying the bottom plate. The auxiliary assembly base is provided with a second vacuum device for vacuum-sucking the heat sink, and the second vacuum device is disposed on the surface of the auxiliary assembly base that is in contact with the bottom plate.

10. A mobile terminal assembly device, characterized in that, It includes a welding device and the heat sink welding fixture according to any one of claims 1 to 9, and the welding device is used for welding the heat sink on the heat sink welding fixture.

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