A structure for fine pressing of a heat sink

Abstract

The utility model discloses a kind of fine pressing processing structures of fin, belong to fin processing field, including base, the upper portion of base is fixedly connected with organism, the inside rotation of organism is connected with shaft, shaft is located in the middle portion of organism, the outer wall of shaft is fixedly connected with carousel, the surface of carousel is equidistant slidingly connected with multiple mounting blocks, the lower portion of multiple mounting blocks is fixedly connected with upper pressing mould, the size of multiple upper pressing mould is sequentially reduced along clockwise direction, the both sides in mounting block interior are slidingly connected with limit block, in the scheme, by the matching design of " carousel-upper pressing mould " and " runner-lower pressing mould ", the quick synchronous switching of multiple specifications pressing mould is realized, multiple size on carousel along clockwise decreasing upper pressing mould, can be switched by motor drive bevel gear driving shaft rotation, without disassembly and replacement pressing mould;The lower pressing mould corresponding to the specification on runner, then can be locked by screw rod control inserting rod by motor no.

Description

Technical Field

[0001] This utility model relates to the field of heat sink processing, and more specifically, to a precision pressing structure for heat sinks. Background Technology

[0002] With the trend of electronic devices developing towards higher power and miniaturization, heat sinks, as one of the heat dissipation components, are widely installed in electronic devices.

[0003] In the prior art, such as Chinese patent "CN222919430U", a "dual-station stamping device for heat sinks" is provided, which includes a machine base, a column on the machine base, a stamping mechanism on the column, a stamping die on the stamping mechanism, a servo motor inside the machine base, a worktable connected to the output end of the servo motor, and two forming dies movably mounted on the worktable. The two forming dies are symmetrically arranged about the midpoint of the worktable, and each forming die can be adapted to the stamping die.

[0004] However, the dual-station design in the aforementioned patent only improves the processing efficiency of heat sinks of the same specifications. For example, while one station is processing, the other station can be used for placing raw materials or removing finished products. But when it is necessary to change the specifications of the finished heat sink, it is still necessary to stop the machine and manually disassemble the old stamping mold on the stamping mechanism and the old forming mold on the worktable, and then install the molds that are compatible with the new specifications one by one. The mold changing process is not simplified. This design not only continues the problems of time-consuming mold changing and cumbersome operation of traditional equipment. Utility Model Content

[0005] 1. Technical problems to be solved

[0006] In view of the problems existing in the prior art, the purpose of this utility model is to provide a precision pressing structure for heat sinks to solve the problems mentioned in the background art.

[0007] 2. Technical Solution

[0008] To solve the above problems, the present invention adopts the following technical solution.

[0009] A precision pressing structure for a heat sink includes a base, an upper body fixedly connected to the base, a rotating shaft rotatably connected inside the body, the rotating shaft being located in the middle of the body, a turntable fixedly connected to the outer wall of the rotating shaft, a plurality of mounting blocks slidably connected at equal intervals on the surface of the turntable, upper pressing molds fixedly connected below each of the mounting blocks, the size of the upper pressing molds decreasing sequentially in a clockwise direction, limit blocks slidably connected to both sides inside the mounting blocks, a spring installed between the limit blocks and the interior of the mounting blocks, and a protruding portion in the middle of the limit block engaging with the upper part of the turntable.

[0010] Furthermore, an arc-shaped block is fixedly connected to the top of the mounting block, and slide bars are fixedly connected to both sides of the mounting block. The slide bars are slidably connected to the turntable. A No. 1 motor is fixedly connected to the middle of the machine body. Bevel gears are fixedly connected to the outer wall of both the No. 1 motor and the rotating shaft. The two bevel gears mesh.

[0011] Furthermore, a hydraulic cylinder is fixedly connected to the top of the machine body, and an arc-shaped groove is opened at the output end of the hydraulic cylinder. The arc-shaped block is slidably connected inside the arc-shaped groove, and both the arc-shaped groove and the arc-shaped block are inverted trapezoidal.

[0012] Furthermore, a stabilizing block is fixedly connected inside the body, and the outer contour of the turntable is slidably connected inside the stabilizing block.

[0013] Furthermore, a fixing block is fixedly connected to the upper part of the base, and a rotating wheel is rotatably connected between the fixing block and the lower part of the machine body, with the rotating wheel located below the turntable.

[0014] Furthermore, the outer wall of the rotating wheel is fixedly connected with multiple pressing molds at equal intervals, the size of the multiple pressing molds decreasing sequentially in a clockwise direction, and the side wall of the rotating wheel is provided with multiple limiting holes at equal intervals.

[0015] Furthermore, a threaded rod is rotatably connected to the lower part of the machine body, a movable plate is threadedly connected to the outer wall of the threaded rod, and an insertion rod is fixedly connected to one side of the movable plate.

[0016] Furthermore, the insertion rod is slidably connected to the machine body, the insertion rod is slidably connected to the limiting hole, and the end of the insertion rod is inserted into the fixing block.

[0017] Furthermore, a second motor is fixedly connected to the lower part of the machine body, and the output end of the second motor is fixedly connected to one end of the threaded rod.

[0018] Furthermore, the cross-sections of both the arc-shaped groove and the arc-shaped block are inverted trapezoidal.

[0019] 3. Beneficial effects

[0020] Compared with existing technologies, the advantages of this utility model are:

[0021] (1) In this solution, the matching design of "turntable-upper die" and "rotary wheel-lower die" enables the rapid and synchronous switching of multiple die specifications. The upper dies on the turntable, whose size decreases clockwise, can be switched by driving the bevel gear of motor No. 1 to rotate the shaft without disassembling and replacing the die. The lower die on the rotary wheel, whose specifications correspond to the lower die, can be locked by controlling the insert rod through the threaded rod driven by motor No. 2, and quickly complete the alignment.

[0022] (2) In this scheme, the stabilizing block inside the machine body wraps around the outer contour of the turntable, restricting the radial runout of the turntable when it rotates, thus improving the stability of the turntable when it rotates.

[0023] (3) In this scheme, the No. 1 motor realizes the switching of the upper mold, and the No. 2 motor completes the locking and unlocking of the lower mold. There is no need for manual insertion or removal of the limit rod or adjustment of the mold position, which reduces manual intervention, reduces operational risks, and adapts to the continuous operation requirements of automated production lines. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0025] Figure 2 This is a schematic diagram showing the position of the arc-shaped groove in this utility model;

[0026] Figure 3 for Figure 1 Enlarged structural diagram of region A in the middle;

[0027] Figure 4 This is a schematic diagram showing the positional relationship between the rotating shaft and the bevel gear in this utility model;

[0028] Figure 5 This is a schematic diagram showing the connection relationship between the mounting block and the limiting block in this utility model;

[0029] Figure 6 This is a schematic diagram showing the positional relationship between the No. 2 motor, the threaded rod, and the machine body in this utility model;

[0030] Figure 7 This is a schematic diagram showing the positional relationship between the limiting hole and the rotating wheel in this utility model.

[0031] Explanation of the labels in the diagram:

[0032] 1. Base; 10. Fixing block; 11. Machine body; 110. Stabilizing block; 12. Hydraulic cylinder; 13. Arc groove; 14. Rotating shaft; 15. Turntable; 16. Mounting block; 17. Upper pressure mold; 18. Limiting block; 19. Spring; 2. Sliding bar; 21. Arc block; 22. Bevel gear; 23. Motor No. 1; 24. Rotating wheel; 25. Lower pressure mold; 26. Limiting hole; 27. Threaded rod; 28. Motor No. 2; 29. ​​Moving plate; 3. Insert rod. Detailed Implementation

[0033] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0034] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0035] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" 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 a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0036] In some embodiments, please refer to Figures 1-7 A precision pressing structure for a heat sink includes a base 1, with a body 11 fixedly connected above the base 1. A rotating shaft 14 is rotatably connected inside the body 11, located in the middle of the body 11. A turntable 15 is fixedly connected to the outer wall of the rotating shaft 14. Multiple mounting blocks 16 are equidistantly slidably connected to the surface of the turntable 15. Upper pressing molds 17 are fixedly connected below each mounting block 16, with the size of the upper pressing molds decreasing sequentially in a clockwise direction. Limiting blocks 18 are slidably connected to both sides inside the mounting blocks 16. Springs 19 are installed between the limiting blocks 18 and the interior of the mounting blocks 16. The protruding part in the middle of the mounting block 18 is engaged above the turntable 15. An arc-shaped block 21 is fixedly connected to the top of the mounting block 16. Slide strips 2 are fixedly connected to both sides of the mounting block 16. The slide strips 2 and the turntable 15 are slidably connected. A No. 1 motor 23 is fixedly connected to the middle of the machine body 11. Bevel gears 22 are fixedly connected to the outer wall of the No. 1 motor 23 and the rotating shaft 14. The two bevel gears 22 mesh. A hydraulic cylinder 12 is fixedly connected to the top of the machine body 11. An arc-shaped groove 13 is opened at the output end of the hydraulic cylinder 12. The arc-shaped block 21 is slidably connected inside the arc-shaped groove 13. Both the arc-shaped groove 13 and the arc-shaped block 21 are inverted trapezoidal.

[0037] In this embodiment, multiple mounting blocks 16 are equidistantly slidably connected on the surface of the turntable 15, and upper pressing molds 17 of decreasing size clockwise are fixed below them respectively. This can adapt to the precision pressing needs of different specifications of heat sinks at one time. Compared with the traditional single-specification pressing mold that requires frequent machine stoppages for replacement, multi-area processing can be completed without disassembling and replacing the pressing mold, which is especially suitable for mass production scenarios.

[0038] The No. 1 motor 23 in the middle of the machine body 11 drives the rotating shaft 14 to rotate through a pair of meshing bevel gears 22, which in turn drives the turntable 15 to rotate, realizing the rapid switching of the upper pressure mold 17.

[0039] The limiting blocks 18 on both sides inside the mounting block 16 are provided with elastic pre-tightening force by springs 19. Their protruding parts are engaged above the turntable 15, which can firmly lock the position of the mounting block 16 on the turntable 15 and prevent the upper pressure mold 17 from being displaced due to force during the fine pressing process. At the same time, when it is necessary to finely adjust the position of the upper pressure mold 17, it is only necessary to overcome the elastic force of the spring 19 to push the mounting block 16. With the sliding connection between the slide strips 2 on both sides of the mounting block 16 and the turntable 15, the adjustment process is smooth and without jamming, which not only ensures the stability during processing, but also takes into account the convenience of later maintenance and adjustment.

[0040] The arc-shaped block 21 above the mounting block 16 and the arc-shaped groove 13 at the output end of the hydraulic cylinder 12 both adopt an inverted trapezoidal design. This structure can form a double limit in both the longitudinal and lateral directions—the longitudinal direction prevents the arc-shaped block 21 from falling out of the arc-shaped groove 13, and the lateral direction ensures that the pressure of the hydraulic cylinder 12 is accurately transmitted to the upper mold 17.

[0041] In some embodiments, please refer to Figures 1-7 A precision pressing structure for a heat sink includes a stabilizing block 110 fixedly connected inside the body 11, a turntable 15 slidably connected to the inside of the stabilizing block 110, a fixing block 10 fixedly connected above the base 1, and a rotating wheel 24 rotatably connected between the fixing block 10 and the lower part of the body 11. The rotating wheel 24 is located below the turntable 15, and multiple pressing dies 25 are fixedly connected at equal intervals to the outer wall of the rotating wheel 24. The size of the multiple pressing dies 25 decreases sequentially in a clockwise direction. Multiple limiting holes 26 are equidistantly opened on the side wall of the machine body 11. A threaded rod 27 is rotatably connected to the lower part of the machine body 11. A movable plate 29 is threadedly connected to the outer wall of the threaded rod 27. An insertion rod 3 is fixedly connected to one side of the movable plate 29. The insertion rod 3 is slidably connected to the machine body 11 and to the limiting holes 26. The end of the insertion rod 3 is inserted into the fixing block 10. A second motor 28 is fixedly connected to the lower part of the machine body 11. The output end of the second motor 28 is fixedly connected to one end of the threaded rod 27.

[0042] In this embodiment, the stabilizing block 110, which is fixedly connected inside the machine body 11, provides an annular wrapping support for the turntable 15 through a sliding connection with the outer contour of the turntable 15. When the No. 1 motor 23 drives the turntable 15 to rotate at high speed to switch the upper die 17, the stabilizing block 110 can limit the radial runout of the turntable 15, greatly reduce the amplitude of the turntable 15 when rotating, and avoid the misalignment of the upper die 17 and the lower die 25 caused by the shaking of the turntable 15. Compared with the design without a stabilizing structure, the vibration and noise during the processing are significantly reduced, and the connection wear between the turntable 15 and the rotating shaft 14 is reduced, extending the service life of the core components.

[0043] The rotating wheel 24, which is rotatably connected between the fixed block 10 above the base 1 and the lower part of the body 11, has multiple lower pressing molds 25 fixed at equal intervals on its outer wall. The size of these molds decreases synchronously with the upper pressing mold 17 in a clockwise direction, forming a precise pairing combination of "upper pressing mold 17 - lower pressing mold 25". When the turntable 15 drives the upper pressing mold 17 of a certain specification to the processing position, the rotating wheel 24 can rotate synchronously to place the corresponding lower pressing mold 25 in the lower receiving position. There is no need to adjust the size of the upper and lower molds separately. This design adapts to the pressing needs of the entire area of ​​the heat sink, from the large-size main body to the small-size corners. This synchronous adaptation design greatly shortens the alignment time of the upper and lower molds and has extremely high alignment accuracy, significantly improving the surface flatness and dimensional consistency of the heat sink.

[0044] Multiple equidistant limiting holes 26 on the side wall of the rotary wheel 24 form a precise limiting fit with the insert rod 3 that is slidably connected inside the machine body 11. When the rotary wheel 24 drives the lower pressing mold 25 to rotate to the target position, the second motor 28 drives the threaded rod 27 to rotate, so that the threaded moving plate 29 drives the insert rod 3 to insert into the limiting hole 26. At the same time, the end of the insert rod 3 is inserted into the fixing block 10 to form a double rigid lock. This structure can completely limit the rotation or displacement of the rotary wheel 24 during the precision pressing process, avoid the lower pressing mold 25 from shifting due to excessive pressing force, keep the dimensional error of the heat sink processing within a very small range, and significantly reduce the scrap rate.

[0045] Working principle: Before the equipment is started, the base 1 serves as a basic support, firmly supporting the fixed body 11 and all auxiliary components above, ensuring that the overall structure is in a stable state. At this time, the outer contour of the turntable 15 is slidably connected to the stabilizing block 110 inside the body 11. Multiple mounting blocks 16 are slidably connected to the turntable 15 through the side slides 2, and with the help of the internal limit block 18 and the spring 19, the upper pressure mold 17 below the mounting block 16 is kept in the initial positioning position. The rotating wheel 24 is rotatably connected between the fixed block 10 above the base 1 and the lower part of the body 11. The multiple lower pressure molds 25 on its outer wall correspond one-to-one with the upper pressure molds 17 on the turntable 15, and their sizes decrease synchronously in a clockwise direction. The limit hole 26 on the side wall of the rotating wheel 24 is separated from the insertion rod 3 inside the body 11, reserving space for subsequent component adjustment.

[0046] According to the size requirements of the heat sink to be processed, the No. 1 motor 23 in the middle of the machine body 11 is started. The bevel gear 22 at the output end of the No. 1 motor 23 meshes with the bevel gear 22 on the outer wall of the rotating shaft 14, driving the rotating shaft 14 and the turntable 15 fixed on the outer wall to rotate. During the rotation of the turntable 15, the stabilizing block 110 inside the machine body 11 restricts the radial runout of the turntable 15 through sliding cooperation with the outer contour of the turntable 15, ensuring that the turntable 15 rotates smoothly. When the upper pressure mold 17 of the target specification rotates with the turntable 15 to the processing station, the No. 1 motor 23 stops running. At this time, the arc block 21 above the mounting block 16 is exactly aligned with the arc groove 13 at the output end of the hydraulic cylinder 12 above the machine body 11, completing the switching and positioning of the upper pressure mold 17.

[0047] The second motor 28 located at the bottom of the machine body 11 is started. The output end of the second motor 28 directly drives the threaded rod 27 to rotate. The moving plate 29, which is threaded to the outer wall of the threaded rod 27, moves axially along the threaded rod 27, thereby driving the insertion rod 3 fixed on one side of the moving plate 29 to move synchronously. The insertion rod 3 first slides with the target limiting hole 26 on the side wall of the rotating wheel 24. After continuing to move, its end is inserted into the fixing block 10 above the base 1, forming a double rigid lock on the rotating wheel 24. This ensures that the lower die 25 on the rotating wheel 24, which matches the specifications of the target upper die 17, is accurately positioned directly below the processing station, completing the alignment of the upper and lower dies 25. The upper die 17 is located directly above the lower die 25. At this time, due to the self-locking property of the threaded drive, the threaded rod 27 maintains the locked state of the insertion rod 3, preventing the rotating wheel 24 from shifting during subsequent processing.

[0048] The heat sink to be processed is placed on the surface of the lower pressure mold 25 above the rotary wheel 24. The hydraulic cylinder 12 above the machine body 11 is activated. The output end of the hydraulic cylinder 12 extends downward. The arc groove 13 at its end slides and engages with the arc block 21 above the mounting block 16. The inverted trapezoidal structure ensures that there is no risk of them falling off and that the pressure transmission is stable. This pushes the mounting block 16 and the upper pressure mold 17 below it to move downward. The upper pressure mold 17 and the lower pressure mold 25 cooperate to apply uniform pressure to the heat sink, completing the precision pressing of the corresponding area of ​​the heat sink. During the processing, the limiting block 18 inside the mounting block 16 is always locked above the rotary wheel 15 under the action of the spring 19 to prevent the upper pressure mold 17 from shifting under force. The rotary wheel 24 remains stationary under the locking action of the insertion rod 3 to ensure the accuracy of the heat sink processing dimensions.

[0049] After the heat sink is precision pressed, the output end of the hydraulic cylinder 12 retracts upward, driving the upper pressing mold 17 and the mounting block 16 back to their initial positions. Then, the second motor 28 is started to reverse, and the threaded rod 27 rotates in the opposite direction, causing the moving plate 29 to drive the insertion rod 3 to disengage from the limiting hole 26 and the fixing block 10, thus releasing the lock on the rotating wheel 24. If it is necessary to continue processing heat sinks of other specifications, the above process of "upper pressing mold switching - lower pressing mold 25 alignment and locking - precision pressing" is repeated. If the processing is completed, all motors and hydraulic cylinders are turned off, and all components return to their initial state, waiting for the next round of processing tasks.

[0050] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A structure for precision pressing of a fin, comprising a base (1), characterized in that: An organic body (11) is fixedly connected above the base (1). A rotating shaft (14) is rotatably connected inside the organic body (11). The rotating shaft (14) is located in the middle of the organic body (11). A turntable (15) is fixedly connected to the outer wall of the rotating shaft (14). Multiple mounting blocks (16) are equidistantly slidably connected to the surface of the turntable (15). An upper pressure mold (17) is fixedly connected below each of the multiple mounting blocks (16). The size of the multiple upper pressure molds (17) decreases sequentially in a clockwise direction. Limiting blocks (18) are slidably connected to both sides inside the mounting blocks (16). A spring (19) is installed between the limiting block (18) and the interior of the mounting block (16). The protruding part in the middle of the limiting block (18) is engaged above the turntable (15).

2. The structure for the fine pressing of a heat sink according to claim 1, wherein: An arc-shaped block (21) is fixedly connected above the mounting block (16), and slide bars (2) are fixedly connected to both sides of the mounting block (16). The slide bars (2) and the turntable (15) are slidably connected. A No. 1 motor (23) is fixedly connected to the middle of the machine body (11). The No. 1 motor (23) and the outer wall of the rotating shaft (14) are both fixedly connected to bevel gears (22), and the two bevel gears (22) mesh.

3. The structure for the fine pressing of a heat sink according to claim 2, wherein: A hydraulic cylinder (12) is fixedly connected to the top of the machine body (11). The output end of the hydraulic cylinder (12) is provided with an arc-shaped groove (13), and the arc-shaped block (21) is slidably connected inside the arc-shaped groove (13).

4. The structure for the fine pressing of a heat sink according to claim 1, wherein: The body (11) is fixedly connected to a stabilizing block (110) inside, and the outer contour of the turntable (15) is slidably connected to the inside of the stabilizing block (110).

5. The structure for the fine pressing of a heat sink according to claim 1, wherein: A fixing block (10) is fixedly connected above the base (1), and a rotating wheel (24) is rotatably connected between the fixing block (10) and the lower part of the body (11). The rotating wheel (24) is located below the turntable (15).

6. The structure for the fine pressing of a heat sink according to claim 5, wherein: The outer wall of the rotating wheel (24) is fixedly connected with a plurality of pressing molds (25) at equal intervals. The size of the plurality of pressing molds (25) decreases sequentially in a clockwise direction. The side wall of the rotating wheel (24) is provided with a plurality of limiting holes (26) at equal intervals.

7. The structure for the fine pressing of a heat sink according to claim 6, wherein: A threaded rod (27) is rotatably connected to the lower part of the body (11). A movable plate (29) is threadedly connected to the outer wall of the threaded rod (27). A plug rod (3) is fixedly connected to one side of the movable plate (29).

8. The structure for the fine pressing process of a heat sink according to claim 7, wherein: The insertion rod (3) is slidably connected to the body (11), the insertion rod (3) is slidably connected to the limiting hole (26), and the end of the insertion rod (3) is inserted into the fixing block (10).

9. The structure for the fine pressing process of a heat sink according to claim 8, wherein: A second motor (28) is fixedly connected to the lower part of the body (11), and the output end of the second motor (28) is fixedly connected to one end of the threaded rod (27).

10. The structure for the fine pressing process of a heat sink according to claim 3, wherein: The cross-sections of the arc groove (13) and the arc block (21) are both inverted trapezoidal.

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