Positioning tool for needle-shaped cooling fin laser resistance welding machining

Abstract

The utility model provides a positioning tool for laser resistance welding processing of needle-shaped radiating fins. The positioning tool comprises a clamp panel, positioning through holes are formed in the needle-shaped radiating fins; positioning columns are arranged at the positions, corresponding to the positioning through holes, of the clamp panel. A first fool-proof hole and a second fool-proof hole are respectively formed in two opposite sides of the needle-shaped radiating fin; the included angle between the connecting line of the first fool-proof hole and the second fool-proof hole and the side where the fool-proof holes are located is an acute angle. And a first fool-proof column and a second fool-proof column are respectively arranged at the positions, corresponding to the first fool-proof hole and the second fool-proof hole, of the clamp panel. The positioning tool provided by the utility model can ensure the stability and accurate positioning of the radiating fin in the laser resistance welding processing process, and avoids damage to a nickel-plated layer on the surface of the radiating fin.

Description

Technical Field

[0001] The utility model relates to the technical field of laser processing, in particular to a positioning tooling for laser laser soldering resistance processing of needle-shaped heat sinks. Background Art

[0002] In the field of electronic equipment manufacturing, heat sinks are one of the key components. Among them, the needle-shaped heat sink consists of a heat dissipation bottom plate and multiple heat dissipation needles. A certain distance is maintained between the heat dissipation needles to form a free-flowing air channel, thereby effectively dissipating heat and achieving the heat dissipation effect. Its high efficient heat conduction performance is favored in the industry and is widely used in fields such as servers, high-performance computers, and high-power LED lighting systems.

[0003] At present, the processing methods of needle-shaped heat sinks have problems such as low efficiency, insufficient precision, and high cost. The laser laser soldering resistance processing technology has high processing precision and processing efficiency, and is gradually applied to the processing process of needle-shaped heat sinks. The laser laser soldering resistance processing technology uses laser to print a frame structure on the surface of the heat sink bottom plate to achieve the soldering resistance effect and avoid problems such as short circuit or leakage of the circuit board.

[0004] However, during the laser soldering resistance processing, the precise positioning and fixation of the workpiece are the keys to ensuring the welding quality. If the heat sink cannot be effectively fixed during the processing, it will cause deviation during the laser laser soldering resistance. Therefore, providing a positioning tooling suitable for laser laser soldering resistance processing of needle-shaped heat sinks is a technical problem to be solved. Summary of the Utility Model

[0005] Aiming at the deficiencies of the existing technology, the purpose of the utility model is to provide a positioning tooling for laser laser soldering resistance processing of needle-shaped heat sinks. The positioning tooling can ensure the stability and precise positioning of the heat sink during the laser laser soldering resistance processing and avoid damaging the nickel plating layer on the surface of the heat sink.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] The utility model provides a positioning tooling for laser laser soldering resistance processing of needle-shaped heat sinks, and the positioning tooling includes a fixture panel;

[0008] Positioning through holes are provided on the needle-shaped heat sink;

[0009] Positioning posts are provided on the fixture panel corresponding to the positions of the positioning through holes;

[0010] First anti-fooling holes and second anti-fooling holes are respectively provided on two opposite sides of the needle-shaped heat sink;

[0011] The included angle between the connection line of the first anti-fooling hole and the second anti-fooling hole and the side where the anti-fooling hole is located is an acute angle;

[0012] At the positions of the fixture panel corresponding to the first anti-fooling hole and the second anti-fooling hole, a first anti-fooling post and a second anti-fooling post are respectively provided.

[0013] In the positioning tooling provided by the present utility model, on the one hand, through the setting of the positioning through holes and the positioning posts, stable positioning of the heat sink can be achieved, and the position of the heat sink remains unchanged during the laser laser soldering process. The positioning post is inserted into the corresponding positioning through hole, and through the cooperation of the two, accurate alignment of the laser processing is ensured; on the other hand, through the setting of the anti-fooling holes and the anti-fooling posts, the situation of the heat sink being placed upside down on the positioning tooling can be avoided, ensuring that the heat sink is placed in the correct direction on the positioning tooling, avoiding problems such as processing defects or rework caused by incorrect placement, and improving production efficiency and product quality.

[0014] Preferably, the angle of the acute angle is 30 - 60°, for example, it can be 30°, 35°, 40°, 45°, 50°, 55° or 60°, but is not limited to the listed values, and other unlisted values within the numerical range are equally applicable.

[0015] Preferably, a nickel plating layer is provided on the surface of the needle-shaped heat sink.

[0016] Preferably, the positioning post includes a column body and a plastic washer provided on the column body.

[0017] Preferably, the shape of the column body is cylindrical.

[0018] Preferably, the axial cross-section of the plastic washer is an inverted "T" shape.

[0019] Preferably, the number of the positioning through holes is at least 2, for example, it can be 2, 3 or 4, but is not limited to the listed values, and other unlisted values within the numerical range are equally applicable.

[0020] Preferably, the shape of the needle-shaped heat sink is rectangular.

[0021] Preferably, the number of the positioning through holes is 4 and they are arranged at the four corners of the needle-shaped heat sink.

[0022] Preferably, the shape of the fixture panel is rectangular.

[0023] The operation process of the positioning tooling provided by the present utility model for the laser laser soldering of the needle-shaped heat sink is as follows:

[0024] Positioning through holes are provided at the four corners of the needle-shaped heat sink. Positioning posts are provided on the fixture panel corresponding to the positions of the positioning through holes. First anti-fooling holes and second anti-fooling holes are respectively provided on two opposite sides of the needle-shaped heat sink. First anti-fooling posts and second anti-fooling posts are respectively provided on the fixture panel corresponding to the positions of the first anti-fooling hole and the second anti-fooling hole. Insert the positioning posts into the corresponding positioning through holes, and at the same time insert the first anti-fooling post into the first anti-fooling hole and insert the second anti-fooling post into the second anti-fooling hole. The positioning post includes a cylindrical column body and a plastic washer with an inverted "T" cross-section axially provided on the column body. The plastic washer can prevent scratching the nickel-plated layer on the surface of the needle-shaped heat sink.

[0025] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0026] (1) Through the arrangement of the positioning through holes and the positioning posts, the positioning tooling provided by the present utility model can achieve stable positioning of the heat sink, keep the position of the heat sink unchanged during the laser laser soldering process, insert the positioning posts into the corresponding positioning through holes, and through the cooperation of the two, ensure the precise alignment of the laser processing.

[0027] (2) Through the arrangement of the anti-fooling holes and the anti-fooling posts, the positioning tooling provided by the present utility model can prevent the heat sink from being placed in the wrong direction on the positioning tooling, ensure that the heat sink is placed in the correct direction on the positioning tooling, avoid problems such as processing defects or rework caused by incorrect placement, and improve production efficiency and product quality.

[0028] (3) For the needle-shaped heat sink with a nickel-plated layer on its surface, the positioning tooling provided by the present utility model is provided with a plastic washer on the upper part of the column body of the positioning post, which can avoid scratching the nickel-plated layer on the surface of the heat sink while achieving effective fixation, and ensure the surface integrity of the heat sink. Description of the Drawings

[0029] Figure 1 is a schematic structural view of the needle-shaped heat sink described in Embodiment 1 of the present utility model;

[0030] Figure 2 is a schematic structural view of the positioning tooling described in Embodiment 1 of the present utility model;

[0031] Figure 3 is a schematic structural view of the positioning post described in Embodiment 1 of the present utility model;

[0032] In the figure: 1-fixture panel; 2-positioning through hole; 3-positioning post; 4-first anti-fooling post; 5-second anti-fooling post; 6-first anti-fooling hole; 7-second anti-fooling hole; 8-needle-shaped heat sink; 9-column body; 10-plastic washer. Detailed Embodiments

[0033] The technical solution of the present utility model will be further described below in conjunction with the accompanying drawings and through specific embodiments.

[0034] The present utility model will be further described in detail below. However, the following examples are merely simple examples of the present utility model and do not represent or limit the scope of the claimed rights of the present utility model. The scope of protection of the present utility model shall be subject to the claims.

[0035] It should be understood that in the description of the present utility model, the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "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, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "plurality" is two or more.

[0036] It should be noted that in the description of the present utility model, unless otherwise clearly defined and limited, the terms "set", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood through specific situations.

[0037] Those skilled in the art should understand that the present utility model necessarily includes the necessary pipelines, conventional valves and general pump equipment for realizing the complete process. However, the above contents do not belong to the main creative points of the present utility model. Those skilled in the art can add and arrange them by themselves based on the process flow and equipment structure selection, and the present utility model has no special requirements and specific limitations on this.

[0038] The technical solution of the present utility model will be further described below in conjunction with the accompanying drawings and through specific embodiments.

[0039] In a specific embodiment, the present utility model provides a positioning tooling for laser laser soldering of needle-shaped heat sinks, as Figure 1 and Figure 2 shown, the positioning tooling includes a fixture panel 1;

[0040] A positioning through-hole 2 is provided on the needle-shaped heat sink 8;

[0041] A positioning post 3 is provided on the fixture panel 1 corresponding to the position of the positioning through-hole 2;

[0042] On two opposite sides of the needle-shaped heat sink 8, a first anti-fooling hole 6 and a second anti-fooling hole 7 are respectively provided;

[0043] The included angle between the connection line of the first anti-fooling hole 6 and the second anti-fooling hole 7 and the side where the anti-fooling hole is located is an acute angle;

[0044] A first anti-fooling post 4 and a second anti-fooling post 5 are respectively provided on the fixture panel 1 corresponding to the positions of the first anti-fooling hole 6 and the second anti-fooling hole 7.

[0045] The positioning tooling provided by the present utility model ensures the stability and precise positioning of the heat sink during the laser laser soldering process through the design of the positioning through-hole 2, the positioning post 3, the first anti-fooling hole 6, the second anti-fooling hole 7, the first anti-fooling post 4 and the second anti-fooling post 5.

[0046] Heat dissipation pins (not shown in the figure) are arranged on the needle-shaped heat sink 8 provided by the present utility model.

[0047] In some embodiments, the angle of the acute angle is 30 - 60°, for example, it can be 30°, 35°, 40°, 45°, 50°, 55° or 60°, but is not limited to the listed values, and other unlisted values within the numerical range are equally applicable.

[0048] In the present utility model, by setting the acute angle, the situation that the heat sink is placed in the wrong direction on the positioning tooling can be avoided, ensuring that the heat sink is placed in the correct direction on the positioning tooling.

[0049] In some embodiments, a nickel plating layer is provided on the surface of the needle-shaped heat sink 8.

[0050] In the present utility model, the setting of the nickel plating layer can enhance the corrosion resistance and heat dissipation performance of the heat sink.

[0051] In some embodiments, as Figure 3 shown, the positioning post 3 includes a column body 9 and a plastic washer 10 provided on the column body 9.

[0052] In some embodiments, the shape of the column body 9 is cylindrical.

[0053] In some embodiments, the axial cross-section of the plastic washer 10 is an inverted "T" shape.

[0054] In the utility model, the provision of the plastic gasket 10 can avoid damage to the nickel-plated layer on the surface of the heat sink during the positioning process, and ensure stability and accuracy during the laser processing.

[0055] In some embodiments, the number of the positioning through holes 2 is at least 2, for example, 2, 3 or 4, but is not limited to the listed values, and other values ​​not listed within the numerical range are also applicable.

[0056] In some embodiments, the pin-shaped heat sink 8 is rectangular in shape.

[0057] In some embodiments, the number of the positioning through holes 2 is four and they are disposed at the four corners of the pin-shaped heat sink 8 .

[0058] In some embodiments, the fixture panel 1 is rectangular in shape.

[0059] In the utility model, according to the shape of the heat sink, the shape of the angled panel is set to be rectangular, so that the positioning tool can match the shape of the heat sink, and by providing positioning through holes 2 at its four corners, stable and accurate positioning can be further achieved.

[0060] The technical effects of the present invention are specifically described below through Examples 1-2:

[0061] Example 1

[0062] This embodiment provides a positioning tool for laser soldering processing of needle-shaped heat sinks, such as Figure 1 and Figure 2 As shown, the positioning tooling includes a fixture panel 1, the needle-shaped heat sink 8 and the fixture panel 1 are both rectangular, and a total of four positioning through holes 2 are arranged at the four corners of the needle-shaped heat sink 8, and the fixture panel 1 is provided with a positioning column 3 at the position corresponding to the positioning through hole 2, and the two opposite sides of the needle-shaped heat sink 8 are respectively provided with a first fool-proof hole 6 and a second fool-proof hole 7, and the angle between the connecting line of the first fool-proof hole 6 and the second fool-proof hole 7 and the side where the fool-proof hole is located is an acute angle, and the fixture panel 1 is provided with a first fool-proof column 4 and a second fool-proof column 5 at the position corresponding to the first fool-proof hole 6 and the second fool-proof hole 7, and the angle of the acute angle is 60°;

[0063] The surface of the needle-shaped heat sink 8 is provided with a nickel-plated layer. Figure 3 As shown, the positioning column 3 includes a column body 9 and a plastic washer 10 disposed on the column body 9. The column body 9 is cylindrical in shape, and the axial section of the plastic washer 10 is an inverted "T" shape.

[0064] Example 2

[0065] This embodiment provides a positioning tooling for laser laser soldering of needle-shaped heat sinks. The positioning tooling includes a fixture panel. Both the needle-shaped heat sink and the fixture panel are rectangular. A total of 4 positioning through holes are provided at the four corners of the needle-shaped heat sink. The fixture panel is provided with positioning posts at positions corresponding to the positioning through holes. The two opposite sides of the needle-shaped heat sink are respectively provided with a first anti-fooling hole and a second anti-fooling hole. The included angle between the connection line of the first anti-fooling hole and the second anti-fooling hole and the side where the anti-fooling hole is located is an acute angle. The fixture panel is provided with a first anti-fooling post and a second anti-fooling post at positions corresponding to the first anti-fooling hole and the second anti-fooling hole respectively. The angle of the acute angle is 30°;

[0066] The surface of the needle-shaped heat sink is provided with a nickel plating layer. The positioning post includes a column body and a plastic washer provided on the column body. The shape of the column body is cylindrical, and the axial cross-section of the plastic washer is an inverted "T" shape.

[0067] The operation process of the positioning tooling of the above embodiment for laser laser soldering of needle-shaped heat sinks is as follows:

[0068] Positioning through holes are provided at the four corners of the needle-shaped heat sink. The fixture panel is provided with positioning posts at positions corresponding to the positioning through holes. The two opposite sides of the needle-shaped heat sink are respectively provided with a first anti-fooling hole and a second anti-fooling hole. The fixture panel is provided with a first anti-fooling post and a second anti-fooling post at positions corresponding to the first anti-fooling hole and the second anti-fooling hole respectively. Insert the positioning posts into the corresponding positioning through holes. At the same time, insert the first anti-fooling post into the first anti-fooling hole and insert the second anti-fooling post into the second anti-fooling hole. The positioning post includes a cylindrical column body and a plastic washer with an axial cross-section of an inverted "T" shape provided on the column body. The plastic washer can avoid scratching the nickel plating layer on the surface of the needle-shaped heat sink.

[0069] In summary, the positioning tooling provided by the present invention can ensure the stability and precise positioning of the heat sink during the laser laser soldering process and avoid damage to the nickel plating layer on the surface of the heat sink.

[0070] The applicant declares that the above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Those skilled in the art should understand that any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention fall within the protection scope and disclosure scope of the present invention.

Claims

1. A positioning tooling for laser soldering mask processing of needle-shaped heat sinks, characterized in that, The positioning tooling includes a fixture panel; The needle-shaped heat sink is provided with positioning through holes; The fixture panel is provided with positioning posts at positions corresponding to the positioning through holes; Two opposite sides of the needle-shaped heat sink are respectively provided with a first anti-fooling hole and a second anti-fooling hole; The included angle between the line connecting the first anti-fooling hole and the second anti-fooling hole and the side where the anti-fooling hole is located is an acute angle; The fixture panel is respectively provided with a first anti-fooling post and a second anti-fooling post at positions corresponding to the first anti-fooling hole and the second anti-fooling hole.

2. The positioning tooling for laser soldering of needle-shaped heat sinks according to claim 1, wherein The angle of the acute angle is 30-60°; 3. The positioning tooling for laser soldering of needle-shaped heat sinks according to claim 1, characterized in that, The surface of the needle-shaped heat sink is provided with a nickel plating layer; 4. The positioning tooling for laser soldering of needle-shaped heat sinks according to claim 1, wherein, The positioning post includes a column body and a plastic washer arranged on the column body; 5. The positioning tooling for laser soldering of needle-shaped heat sinks according to claim 4, characterized in that The shape of the column body is cylindrical; 6. The positioning tooling for laser soldering of needle-shaped heat sinks according to claim 4, wherein, The axial cross-section of the plastic washer is an inverted "T" shape; 7. The positioning tooling for laser soldering of needle-shaped heat sinks according to claim 1, characterized in that, The number of the positioning through holes is at least 2; 8. The positioning tooling for laser soldering of needle-shaped heat sinks according to claim 7, characterized in that, The shape of the needle-shaped heat sink is rectangular; 9. The positioning tooling for laser soldering of needle-shaped heat sinks according to claim 8, characterized in that, The number of the positioning through holes is 4 and they are arranged at the four corners of the needle-shaped heat sink; 10. The positioning tooling for laser soldering of needle-shaped heat sinks according to claim 1, characterized in that, The shape of the fixture panel is rectangular.

Images