Welding tool for red copper heat sink fins

Abstract

The utility model relates to the technical field of machining tools for welding, in particular to a welding tool for red copper heat sink fins. Two rows of studs are fixed to the upper portion of a bottom plate. A plurality of vertical plates are vertically and fixedly connected between the two transverse plates which are arranged in parallel, and the vertical plates are pressed on the longitudinal straight pipe part of the S-shaped copper pipe; each stud penetrates through the corresponding through hole in the transverse plate, and the upper end of each stud is provided with a flat base plate and a nut. And the S-shaped copper pipe is pressed on the copper plate through pressure fit of the vertical plate, the stud and the transverse plate. The tool designed according to the specific shape and size of the heat sink is adopted, and the copper pipe and the copper plate are tightly pressed together, so that the problem of thermal deformation in a welding state can be effectively prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of welding processing tooling, in particular to a welding tooling for copper heat sink fins. Background Art

[0002] At present, copper heat sink fins with good thermal conductivity are widely used in devices such as space environment simulators that need to create different temperature environments. The heat sink fins need to be welded to copper plates and copper tubes that contain heat-absorbing or heat-transfer media. In the common copper heat sink welding process in my country, the copper tubes and copper plates in a high-temperature state will undergo thermal deformation, resulting in an uncertain gap in the contact between them, which directly leads to uneven solder filling, the welding strength cannot be guaranteed, and the welding thermal deformation of the entire product cannot be controlled.

[0003] In the prior art, a pressing device is usually used to press the copper plate and the copper tube to achieve fixation and prevent thermal deformation. The current existing pressing devices have a good fixing effect, but the effect of preventing thermal deformation still needs to be improved. For example, Chinese patent CN206373548U discloses an evaporator copper tube welding tool for welding between copper plates and copper disc evaporation tubes. In this device, a rotating handle is connected to the top of the screw, and a "cross"-shaped pressing frame is provided below the screw. By rotating the screw, the cross-shaped pressing frame can press the plate and the evaporation tube to fix and prevent thermal deformation. However, the contact area between the cross-shaped pressing frame and the copper tube is limited, resulting in a small force point. The effect of preventing thermal deformation during the S-shaped tube welding process is poor. In addition, the screw is located in the center position, and the force applied to the pressing frame is not uniform. Therefore, it is necessary to develop a welding tool for S-shaped tubes to prevent thermal deformation during the welding process. Utility Model Content

[0004] In order to solve the problems existing in the prior art of copper heat sink welding, such as the thermal deformation of copper tubes and copper plates caused by high temperature and the resulting deformation, the present invention provides a welding tool for copper heat sink fins. The specific solution is as follows:

[0005] A welding fixture for copper heat sink fins comprises a copper plate, an S-shaped copper tube and a welding fixing fixture, comprising: a bottom plate, a vertical plate, a horizontal plate, studs, nuts, a copper plate and an S-shaped copper tube, wherein two rows of parallel studs are fixed above opposite sides of the bottom plate; the two horizontal plates are arranged in parallel and have through holes, each of the studs passes through the corresponding horizontal plate through hole, a nut is installed on the upper end of the stud, a plurality of vertical plates are fixedly connected between the two horizontal plates, the vertical plates are located between the bottom plate and the horizontal plate and are fixedly connected to the horizontal plates, and the vertical plates and the horizontal plates are perpendicular to each other; the vertical plates are pressed above the S-shaped copper tube, the lower surface of the S-shaped copper tube is in contact with the copper plate, and the copper plate is in contact with the bottom plate.

[0006] Furthermore, it also includes a flat washer, which is located between the nut and the cross plate.

[0007] Furthermore, the vertical plate is connected to the horizontal plate by welding.

[0008] Furthermore, the S-shaped copper tube includes a longitudinal straight tube portion and an elbow tube portion, the horizontal plate and the stud are located outside the S-shaped copper tube, and the vertical plate is pressed on the longitudinal straight tube portion in the S-shaped copper tube.

[0009] Furthermore, the vertical plates are slats with a thickness of 10 mm, and the number of the vertical plates is the same as the number of the longitudinal straight tube parts.

[0010] Furthermore, the number of the studs in each row is the same as the number of the elbow pipe parts in the S-shaped copper tube. Specifically, the position of each stud corresponds to the center of the elbow pipe part in the S-shaped copper tube.

[0011] The utility model provides a welding tool for copper heat sink fins. By pressing a plurality of vertical plates on the S-shaped copper tube, uniform pressure on the S-shaped copper tube can be effectively achieved. There are many force points on the S-shaped copper tube and the force-bearing area is large. At the same time, the horizontal plates and the studs are located on the upper and lower sides of the S-shaped copper tube and act symmetrically, so that the force is more uniform. The use of this device can not only effectively reduce the thermal deformation of the copper tube and the copper plate during the welding process, but also ensure the welding gap between the copper tube and the copper sheet, so that the solder filling is uniform and consistent, thereby ensuring reliable welding strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The following further describes the embodiments of the present invention with reference to the accompanying drawings, wherein:

[0013] Figure 1 This is a top view schematic diagram of an embodiment of a welding tool for copper heat sink fins of the present invention;

[0014] Figure 2 This is a schematic diagram of the main view of an embodiment of the utility model;

[0015] Figure 3 This is a top view of the embodiment of the utility model when the nuts, vertical plates and horizontal plates are not installed;

[0016] Figure 4 for Figure 3 Section view at section AA.

[0017] Among them: 1- bottom plate, 2- vertical plate, 3- horizontal plate, 4- stud, 5- flat plate, 6- nut, 7- copper plate, 8- S-shaped copper tube, 81- longitudinal straight tube part, 82- elbow tube part. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below through specific embodiments in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0019] like Figures 1-4 In the embodiment of the present invention shown, a welding fixture for a copper heat sink fin includes a copper plate 7, an S-shaped copper tube 8 and a welding fixing fixture, specifically including: a bottom plate 1, a vertical plate 2, a horizontal plate 3, a stud 4, a nut 6, a copper plate 7 and an S-shaped copper tube 8, wherein two rows of parallel studs 4 are fixed above the opposite sides of the bottom plate 1; two horizontal plates 3 are arranged in parallel and have through holes, each stud 4 passes through the corresponding through hole of the horizontal plate 3, and a flat pad 5 and a nut 6 are provided on the upper end of the stud 4, and multiple vertical plates 2 are fixedly connected between the two horizontal plates 3, and the vertical plates 2 are located between the bottom plate 1 and the horizontal plate 3 and are fixedly connected to the horizontal plate 3, and the vertical plates 2 and the horizontal plates 3 are perpendicular to each other in the horizontal and vertical directions; the S-shaped copper tube 8 includes a longitudinal straight tube portion 81 and an elbow tube The portion 82, the longitudinal straight tube portion 81 and the elbow tube portion 82 are arranged in a staggered order, the horizontal plate and the studs are located on the outside of the S-shaped copper tube, the vertical plate 2 is pressed on the longitudinal straight tube portion 81 in the S-shaped copper tube, the lower surface of the S-shaped copper tube 8 is in contact with the copper plate 7, and the copper plate 7 is in contact with the bottom plate 1. The copper plate 7 and the S-shaped copper tube 8 are pressed against the bottom plate 1 by tightening the nut 6. The number of vertical plates 2 is the same as the longitudinal tube portion 81, and the number of studs 4 in each row is the same as the number of elbow tube portions 82 in the S-shaped copper tube. The position of each stud corresponds to the center of the elbow tube portion 82 in the S-shaped copper tube to ensure that balanced pressure is provided; the upper end of the stud 4 is provided with a flat washer 5 and a nut 6 to fix it to the horizontal plate 3, and the vertical plate 2 and the S-shaped copper tube 8 are firmly pressed by tightening the nut.

[0020] In this embodiment, the vertical plate is a strip with a thickness of 10 mm. The horizontal plate and the vertical plate are fixed by welding, and the stud 4 is fixed to the bottom plate 1 by welding.

[0021] Before welding the copper plate 7 and the S-shaped copper tube 8, the copper plate 7 is first laid flat on the base plate 1. The copper tube is then placed on the copper plate according to the design requirements, with each vertical plate 2 correspondingly pressed against each longitudinal straight tube portion 81. The stud 4 is then passed through the through-hole on the horizontal plate 3 to complete the positioning of the S-shaped copper tube 8, the copper plate 7, and the tooling. A flat washer 5 is then placed on the upper end of the stud and a nut 6 is screwed on. By tightening the nut 6, the copper plate 7 and the S-shaped copper tube 8 are firmly pressed together. The welding between the copper plate 7 and the S-shaped copper tube 8 then begins. During the welding process, the thermal deformation problem is effectively suppressed due to the compression of the copper plate and the S-shaped copper tube 8.

[0022] Some exemplary embodiments of the present invention are described above. It will be understood that the above embodiments are only used to explain the present invention and do not constitute a limitation on the scope of protection of the present invention. The features in these embodiments can be recombined in an appropriate manner, and the solutions obtained thereby are still within the scope of protection claimed by the present invention. Based on the above embodiments, all other embodiments obtained by those skilled in the art without making any creative work, that is, all modifications, equivalent substitutions and improvements made within the spirit and principles of this application, fall within the scope of protection claimed by the present invention.

Claims

1. A welding fixture for a copper heat sink fin, comprising a copper plate (7), an S-shaped copper tube (8) and a welding fixture, characterized in that: include: A bottom plate (1), a vertical plate (2), a horizontal plate (3), a stud (4), a nut (6), a copper plate (7) and an S-shaped copper tube (8), wherein two rows of parallel studs (4) are fixed above opposite sides of the bottom plate (1); the two horizontal plates (3) are arranged in parallel and have through holes, each of the studs (4) passes through the corresponding through hole of the horizontal plate (3), and a nut (6) is installed on the upper end of the stud (4); a plurality of vertical plates (2) are fixedly connected between the two horizontal plates (3), the vertical plates (2) are located between the bottom plate (1) and the horizontal plate (3) and are fixedly connected to the horizontal plate (3), and the vertical plates (2) and the horizontal plates (3) are perpendicular to each other; the vertical plates (2) are pressed above the S-shaped copper tube (8), the lower surface of the S-shaped copper tube (8) is in contact with the copper plate (7), and the copper plate (7) is in contact with the bottom plate (1).

2. The welding tool for copper heat sink fins according to claim 1, characterized in that: It also includes a flat washer (5), which is located between the nut (6) and the transverse plate (3).

3. The welding tool for copper heat sink fins according to claim 1, characterized in that: The vertical plate (2) and the horizontal plate (3) are connected by welding.

4. The welding tool for copper heat sink fins according to claim 1, characterized in that: The S-shaped copper tube (8) comprises a longitudinal straight tube portion (81) and an elbow tube portion (82); the horizontal plate (3) and the stud (4) are located outside the S-shaped copper tube (8); and the vertical plate (2) is pressed on the longitudinal straight tube portion (81) in the S-shaped copper tube (8).

5. The welding tool for copper heat sink fins according to claim 4, characterized in that: The vertical plates (2) are strips with a thickness of 10 mm. The number of the vertical plates (2) is the same as the number of the longitudinal straight tube portions (81).

6. The welding tool for copper heat sink fins according to claim 4, characterized in that: The number of the studs (4) in each row is the same as the number of the elbow pipe parts (82) in the S-shaped copper pipe (8).

7. The welding tool for copper heat sink fins according to claim 6, characterized in that: The position of each stud (4) corresponds to the center of the elbow pipe portion (82) in the S-shaped copper pipe (8).

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