Aluminum alloy fin self-guiding deviation correction numerical control punch and stamping method thereof

Abstract

This invention relates to the field of CNC punching technology, specifically to a self-guiding and corrective CNC punching machine for aluminum alloy heat sinks and its punching method. The machine includes: a lifting plate and fixed plates symmetrically arranged and fixedly mounted on the lifting plate; a punching machine body fixed on the lifting plate; a lifting block slidably mounted on the punching machine body; an impact head fixed to the end of the lifting block; a translation component disposed on the lifting plate; a receiving plate connected to the translation component; a follow-up pushing mechanism disposed on the fixed plate and connected to the receiving plate; a clamping and positioning component disposed on the follow-up pushing mechanism; a clamping block connected to the clamping and positioning component; a slot on the clamping block; and a baffle fixed to the clamping block; and a displacement guiding mechanism disposed on the lifting plate and connected to the clamping and positioning component and the receiving plate; a pressure constant-pressure mechanism connected to the displacement guiding mechanism disposed on the clamping and positioning component. This application can maintain a constant clamping pressure to ensure that the heat sink does not deform during punching.

Description

Technical Field

[0001] This invention relates to the field of CNC punching technology, specifically to a self-guiding and corrective CNC punching machine for aluminum alloy heat sinks and its punching method. Background Technology

[0002] Aluminum alloy heat sinks are widely used in computers, servers and other equipment, and are favored for their excellent thermal conductivity and lightweight characteristics.

[0003] Aluminum alloys have excellent thermal conductivity, enabling them to rapidly transfer heat from the surface of the radiator to the entire radiator material. When a hot object comes into contact with the radiator surface, heat is quickly diffused throughout the radiator via the aluminum alloy material.

[0004] In the production of aluminum alloy heat sinks, specific positions typically require stamping. On traditional production lines, workers need to spend time positioning and adjusting these areas. This is especially true when producing small batches or complex-shaped heat sinks, where manual operation becomes more difficult and risky. If workpieces are clamped for positioning, applying excessive clamping force along their length can cause them to bend due to their relatively low strength. Conversely, insufficient clamping force can result in poor positioning accuracy and a tendency for the heat sink to loosen. Summary of the Invention

[0005] The purpose of this invention is to provide a self-guiding and corrective CNC punching machine for aluminum alloy heat sinks and its punching method, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A self-guiding and corrective CNC punching machine for aluminum alloy heat sinks, comprising:

[0008] A lifting plate and a fixing plate fixedly mounted on the lifting plate and arranged symmetrically, a punch press body is fixed on the lifting plate, a lifting block is slidably mounted on the punch press body, and an impact head is fixed at the end of the lifting block;

[0009] Also includes:

[0010] A translation component is disposed on the lifting plate, and a receiving plate is connected to the translation component;

[0011] A follow-up pushing mechanism is mounted on the fixed plate and connected to the receiving plate. The follow-up pushing mechanism is equipped with a clamping and positioning component. A clamping block is connected to the clamping and positioning component. A slot is provided on the clamping block. A baffle is fixed on the clamping block. The clamping and positioning component can drive the clamping block to move in the horizontal direction when the follow-up pushing mechanism moves.

[0012] A displacement guiding mechanism is disposed on the lifting plate and connected to the clamping and positioning assembly and the receiving plate. The clamping and positioning assembly is provided with a pressure constant mechanism connected to the displacement guiding mechanism. The displacement guiding mechanism can operate when the receiving plate moves to drive the pressure constant mechanism to move, so as to adjust the clamping force of the clamping block through the clamping and positioning assembly.

[0013] As a further aspect of the present invention: the translation component includes a groove formed on the lifting plate, a sliding block is slidably installed in the groove, the sliding block is fixedly connected to the receiving plate, and a cylinder fixedly connected to the sliding block is fixed at the bottom of the lifting plate.

[0014] As a further embodiment of the present invention: the follow-up pushing mechanism includes a guide post fixedly installed on the fixed plate, the guide post having a through groove, a connecting plate fixedly attached to the receiving plate and slidably connected to the guide post, a pushing block fixedly attached to the connecting plate, and a driven component connected to the connecting plate on the guide post.

[0015] As a further embodiment of the present invention: the driven component includes a push rod fixedly mounted on the connecting plate and slidably connected to the through groove, a limiting ring fixedly mounted at the end of the push rod and slidably connected to the through groove, a sliding sleeve slidably mounted on the guide post, a first spring sleeved on the guide post, and the two ends of the first spring abutting against the sliding sleeve and the connecting plate respectively.

[0016] It also includes a support ring that is fixedly mounted on the fixed plate and engages with the sliding sleeve.

[0017] As a further embodiment of the present invention: the clamping and positioning assembly includes a support sleeve fixedly installed on the side wall of the sliding sleeve and arranged symmetrically, a support rod slidably installed inside the support sleeve, the support rod being fixedly connected to the clamping block, a rotating rod being rotatably installed on the clamping block, and a fixing ring being fixed to one end of the rotating rod away from the clamping block.

[0018] As a further embodiment of the present invention: the displacement guiding mechanism includes a first movable plate slidably mounted on the support sleeve and slidably connected to the rotating rod, the first movable plate abutting against the fixed ring, a limit post fixed on the first movable plate, and a guide component connected to the limit post provided on the receiving plate.

[0019] As a further embodiment of the present invention: the guide component includes a horizontal groove and a second vertical groove formed on the receiving plate, the end of the horizontal groove being connected to the end of the second vertical groove, the lifting plate having an inclined groove and a first vertical groove formed on the lifting plate, the end of the inclined groove being connected to the end of the first vertical groove, and the limiting post passing through the horizontal groove and the second vertical groove, and slidingly engaging with the inclined groove and the first vertical groove.

[0020] As a further embodiment of the present invention: the pressure constant mechanism includes a first guide groove and a second guide groove formed on the rotating rod, a first limiting block that slides and engages with the first guide groove is fixed on the first movable plate, and an elastic component connected to the second guide groove and the support rod is provided on the rotating rod.

[0021] As a further embodiment of the present invention: the elastic component includes a second movable plate slidably mounted on the support rod and slidably connected to the rotating rod, a second limiting block fixed on the second movable plate and slidably fitted into the second guide groove, and a second spring sleeved on the rotating rod, the two ends of the second spring abutting against the first movable plate and the second movable plate respectively.

[0022] A stamping method for a self-guiding and correcting CNC punch press for aluminum alloy heat sinks includes the following steps:

[0023] Step 1: Place the heat sink to be stamped on the receiving plate. Under the action of the translation component, push the receiving plate toward the impact head.

[0024] Step 2: The receiving plate will also drive the follow-up pushing mechanism to move, so as to control the movement of the clamping block through the clamping and positioning component. Under the action of the displacement guiding mechanism and the pressure constant mechanism, the clamping and positioning component controls the two clamping blocks to move towards each other.

[0025] Step 3: When the clamping block moves to the position where it engages with the heat sink, the clamping block stops moving. Under the action of the displacement guiding mechanism and the pressure constant mechanism, the pressure of the clamping block on the heat sink remains constant.

[0026] Step 4: The receiving plate continues to move, and under the action of the follow-up pushing mechanism, the heat sink moves to the position where it matches the baffle. At this time, the impact head can be driven by the lifting block to perform a stamping process on the heat sink.

[0027] Compared with the prior art, the beneficial effects of the present invention are: the present application can automatically clamp, position and correct the heat sink to ensure that the stamping position will not be deviated. Specifically, when the translation component moves, it drives the receiving plate to move, thereby driving the follow-up pushing mechanism to move. The clamping and positioning component controls the two clamping blocks to translate towards the required stamping position. At the same time, under the action of the displacement guiding mechanism and the pressure constant mechanism, the two clamping blocks move towards each other to clamp the heat sink. When the slot engages with the heat sink, it means that the two short sides of the heat sink are clamped. At this time, the follow-up pushing mechanism will control the relative displacement between the clamping blocks and the receiving plate to clamp the other two sides of the heat sink through the cooperation of the follow-up pushing mechanism and the baffle, and push them to the required clamping position. Through the above operation, the heat sink can be clamped on all four sides while the heat sink is precisely moved to the required stamping position.

[0028] When the clamping block contacts the heat sink, the heat sink first abuts against the inclined surface of the slot under the action of the slot, causing the heat sink to automatically move aside and align with the center position of the slot. As the clamping block continues to move, the heat sink gradually enters the slot. During this process, the slot plays a guiding role, which can not only position the heat sink to ensure that it can smoothly enter the slot, but also prevent the side of the clamping block from making hard contact with the heat sink when the center of the slot is not on the same horizontal plane as the heat sink, which would cause the heat sink to bend under force. This ensures the accuracy of the heat sink clamping and effective protection.

[0029] When the slot is fully inserted into the side of the heat sink, the second spring can be compressed before the second limiting block disengages from the annular groove. This allows the clamping force to be gradually increased as the clamping block holds the heat sink, ensuring clamping stability. When the increased clamping force reaches a certain value, the second limiting block will disengage from the annular groove and enter the second spiral groove. At this point, the clamping force of the clamping block will remain constant to avoid the problem of the heat sink bending due to the continuous increase of clamping force during subsequent movement. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of one embodiment of a CNC punch press for self-guiding and correcting aluminum alloy heat sinks.

[0031] Figure 2 This is a structural schematic diagram of another angle in one embodiment of a CNC punch press for self-guiding and correcting aluminum alloy heat sinks.

[0032] Figure 3 This is a schematic diagram showing the connection relationship between the receiving plate, the follow-up pushing mechanism, the clamping and positioning component, and the clamping block in one embodiment of a self-guiding and correcting CNC punching machine for aluminum alloy heat sinks.

[0033] Figure 4 for Figure 3 A magnified schematic diagram of the structure at point A in the middle.

[0034] Figure 5 This is a schematic diagram of the structure of the lifting plate, the receiving plate, and the partial displacement guiding mechanism in one embodiment of a self-guiding and correcting CNC punch press for aluminum alloy heat sinks.

[0035] Figure 6 This is a schematic diagram showing the connection relationship between the follow-up pushing mechanism, the clamping and positioning component, the partial displacement guiding mechanism, and the partial pressure constant mechanism in one embodiment of a self-guided and corrective CNC punching machine for aluminum alloy heat sinks.

[0036] Figure 7 This is a schematic diagram of the structure of some of the follow-up pushing mechanism, clamping and positioning components, clamping blocks, baffles, and slots in one embodiment of a self-guided and corrective CNC punching machine for aluminum alloy heat sinks.

[0037] Figure 8 This is a schematic diagram of the structure of a self-guiding and correcting CNC punch press for aluminum alloy heat sinks, including a clamping and positioning component, a partial displacement guiding mechanism, and a partial pressure constant mechanism.

[0038] Figure 9 This is a partial half-section diagram of one embodiment of a CNC punch press for self-guiding and correcting aluminum alloy heat sinks.

[0039] Figure 10 This is an exploded structural diagram of the clamping and positioning assembly, a partial displacement guiding mechanism, and a partial pressure constant mechanism in one embodiment of a self-guiding and correcting CNC punch press for aluminum alloy heat sinks.

[0040] In the diagram: 1. Lifting plate; 101. Slide groove; 102. Inclined groove; 103. First vertical groove; 2. Fixing plate; 3. Punch press body; 4. Lifting block; 5. Impact head; 6. Receiving plate; 601. Sliding block; 602. Horizontal groove; 603. Second vertical groove; 7. Cylinder; 8. Guide column; 801. Through groove; 9. Connecting plate; 901. Push block; 10. First spring; 11. Push rod; 12. Limiting ring; 13. Sliding sleeve; 14. Support sleeve; 15. Support rod; 16. Clamping block; 1601. Slot; 1602. Baffle; 17. Rotating rod; 1701. Straight groove; 1702. First spiral groove; 1703. Annular groove; 1704. Second spiral groove; 18. Fixing ring; 19. First movable plate; 20. First limiting block; 21. Limiting post; 22. Second spring; 23. Second movable plate; 24. Second limiting block; 25. Support ring. Detailed Implementation

[0041] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0042] Furthermore, elements in this invention are referred to as being "fixed to" or "set on" another element, which may be directly on the other element or may also include an intervening element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or may also include an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations.

[0043] Please see Figures 1-10 In this embodiment of the invention, a self-guiding and corrective CNC punching machine for aluminum alloy heat sinks includes:

[0044] A lifting plate 1 and a fixing plate 2 fixedly installed on the lifting plate 1 and arranged symmetrically. A punch press body 3 is fixed on the lifting plate 1. A lifting block 4 is slidably installed on the punch press body 3. An impact head 5 is fixed at the end of the lifting block 4.

[0045] Also includes:

[0046] A translation component is disposed on the lifting plate 1, and a receiving plate 6 is connected to the translation component;

[0047] A follow-up pushing mechanism is mounted on the fixed plate 2 and connected to the receiving plate 6. The follow-up pushing mechanism is equipped with a clamping and positioning component. A clamping block 16 is connected to the clamping and positioning component. A slot 1601 is provided on the clamping block 16. A baffle 1602 is fixed on the clamping block 16. The clamping and positioning component can drive the clamping block 16 to move in the horizontal direction when the follow-up pushing mechanism moves.

[0048] A displacement guiding mechanism is disposed on the lifting plate 1 and connected to the clamping and positioning assembly and the receiving plate 6. The clamping and positioning assembly is provided with a pressure constant mechanism connected to the displacement guiding mechanism. The displacement guiding mechanism can operate when the receiving plate 6 moves to drive the pressure constant mechanism to move, so as to adjust the clamping force of the clamping block 16 through the clamping and positioning assembly.

[0049] Specifically, during the stamping of the heat sink, the heat sink can be placed on the receiving plate 6. Under the action of the translation component, the receiving plate 6 drives the heat sink to move towards the impact head 5. The translation component also drives the follow-up pushing mechanism and controls the movement of the clamping block 16 through the clamping and positioning component. At the same time, the receiving plate 6 also controls the displacement guiding mechanism to control the two clamping blocks 16 to move towards each other through the clamping and positioning component. When the clamping block 16 controls the slot 1601 to fit into the side of the heat sink, the heat sink can be clamped in both the horizontal and vertical directions. Under the action of the constant pressure mechanism, the clamping force provided by the clamping block 16 to the heat sink remains constant, so as to prevent the heat sink from deforming due to excessive clamping force. Under the action of the follow-up pushing mechanism, a certain displacement difference can also be formed between the receiving plate 6 and the clamping block 16 to position and clamp the four sides of the heat sink before stamping. At this time, the impact head 5 can be controlled to stamp the heat sink. Through the displacement of the clamping block 16, the heat sink can be automatically positioned and clamped, and the clamping force provided to the heat sink will not be too large, thereby ensuring that the heat sink will not deform.

[0050] Please see Figures 1-3 The translation component includes a groove 101 formed on the lifting plate 1, a sliding block 601 slidably installed in the groove 101, the sliding block 601 being fixedly connected to the receiving plate 6, and a cylinder 7 fixedly connected to the sliding block 601 at the bottom of the lifting plate 1.

[0051] In detail, in the initial state, under the action of cylinder 7, the sliding block 601 is located at the end of its stroke on the side away from the punch body 3. The punch body 3 is provided with a drive source, which is used to drive the impact head 5 to reciprocate in the vertical direction through the lifting block 4. This is an application of the prior art and will not be described in detail in this application. When it is necessary to punch the heat sink, the heat sink can be placed on the receiving plate 6. At this time, cylinder 7 works and drives the sliding block 601 to move along the length direction of the slide groove 101, thereby driving the receiving plate 6 to move, so as to control the heat sink to move towards the impact head 5. When the heat sink moves to the required punching position to cooperate with the impact head 5, cylinder 7 stops working. Under the action of impact head 5, the heat sink is impacted. After the impact is completed, cylinder 7 controls the receiving plate 6 to reset and repeats the above steps, thereby realizing the punching process of the heat sink.

[0052] Please see Figures 1-3 , Figure 6 , Figure 7The follow-up pushing mechanism includes a guide post 8 fixedly installed on the fixed plate 2, a through groove 801 on the guide post 8, a connecting plate 9 fixedly installed on the receiving plate 6 and slidably connected to the guide post 8, a push block 901 fixedly installed on the connecting plate 9, and a driven component connected to the connecting plate 9 on the guide post 8. The driven component includes a push rod 11 fixedly installed on the connecting plate 9 and slidably connected to the through groove 801, a limiting ring 12 fixedly installed at the end of the push rod 11 and slidably connected to the through groove 801, a sliding sleeve 13 slidably installed on the guide post 8, and a first spring 10 sleeved on the guide post 8. The two ends of the first spring 10 abut against the sliding sleeve 13 and the connecting plate 9, respectively. It also includes a support ring 25 fixedly installed on the fixed plate 2 and in contact with the sliding sleeve 13.

[0053] It should be noted that there are two guide posts 8, which makes the clamping and positioning components and the clamping block 16 symmetrically arranged. The support ring 25 is hollow, and the size of the hollow part is larger than the size of the limiting ring 12 but smaller than the size of the sliding sleeve 13. In the initial state, the receiving plate 6 and the connecting plate 9 are located at the end of their stroke on the side away from the punch press body 3, and the first spring 10 is in a compressed state, so that the sliding sleeve 13 is located at the end of its stroke in the direction away from the connecting plate 9 and is in abutting state with the limiting ring 12. At this time, the distance between the sliding sleeve 13 and the support ring 25 is... At its maximum, when stamping of the heat sink is required, the heat sink to be processed can be placed on the receiving plate 6, and the heat sink is controlled to be positioned between the connecting plate 9 and the clamping block 16. At this time, under the action of the cylinder 7, the receiving plate 6 is controlled to move along the length direction of the slide groove 101, thereby driving the connecting plate 9 to move. Since the guide post 8 and the slide groove 101 are arranged in parallel, the connecting plate 9 will move along the length direction of the guide post 8, and drive the sliding sleeve 13 to move synchronously through the first spring 10. The connecting plate 9 will also drive the push rod 11 to move, so that... The limiting ring 12 moves along the length of the through groove 801. Under the action of the first spring 10, the sliding sleeve 13 is always in contact with the limiting ring 12. The sliding sleeve 13 also drives the clamping and positioning assembly to move, thereby driving the clamping block 16 to move. Under the action of the displacement guiding mechanism, the two clamping blocks 16 move towards each other and clamp the heat sink through the slot 1601. After the short side of the heat sink is clamped, the connecting plate 9 continues to move. When the limiting ring 12 passes the support ring 25 and the sliding sleeve... When the cylinder 13 abuts against the support ring 25, the sliding sleeve 13 stops moving, so that the position of the clamping block 16 remains unchanged. The connecting plate 9 continues to move and compresses the first spring 10. The connecting plate 9 also drives the pushing block 901 to move. When the pushing block 901 moves to abut against the heat sink, it controls the heat sink to move towards the baffle 1602. When the heat sink abuts against the baffle 1602, the long side of the heat sink is also clamped. At this time, the heat sink moves to the required stamping position, the cylinder 7 stops moving, and the heat sink is stamped under the action of the impact head 5.

[0054] Preferably, the first spring 10 enables the control connecting plate 9 and the sliding sleeve 13 to move synchronously. During this period, the clamping block 16 will perform a clamping action on the heat sink. After the heat sink is clamped on both sides, the sliding sleeve 13 abuts against the support ring 25, the first spring 10 is compressed, and under the action of the pushing block 901, it performs a clamping action on the other two sides of the heat sink, thereby achieving four-sided clamping of the heat sink and positioning of the heat sink to ensure that the heat sink is in the required stamping position after clamping.

[0055] Please see Figures 1-4 , Figures 6-10The clamping and positioning assembly includes a support sleeve 14 fixedly installed on the side wall of the sliding sleeve 13 and arranged symmetrically. A support rod 15 is slidably installed inside the support sleeve 14. The support rod 15 is fixedly connected to the clamping block 16. A rotating rod 17 is rotatably installed on the clamping block 16. A fixing ring 18 is fixed to one end of the rotating rod 17 away from the clamping block 16.

[0056] Furthermore, the heat sink is composed of horizontally arranged aluminum alloy sheets and multiple vertically arranged fins, resulting in higher strength on both sides along the fin direction and lower strength on both sides perpendicular to the fins. Initially, the baffle 1602 on the clamping block 16 is located outside the receiving plate 6. Under the action of the displacement guiding mechanism, the support rod 15 is positioned at the end of its stroke within the support sleeve 14, minimizing the distance between the clamping block 16 and the sliding sleeve 13. The baffle 1602 is located at the end of the stroke of the clamping block 16 away from the connecting plate 9. When the sliding sleeve 13 moves along the length of the guide post 8, it drives the support sleeve 14 to move, thereby causing the clamping block 16 to move towards the impact head 5 via the support rod 15. Under the action of the displacement guiding mechanism, the rotating rod 17 is controlled to move away from the sliding sleeve 13, causing the two clamping blocks 16 to move towards each other. It also drives the movement of the slot 1601. Under the action of the slot 1601, the two clamping blocks 16 are set in an isosceles trapezoidal shape at their close ends. The opening thickness of the slot 1601 is equivalent to the thickness of the heat sink. When the slot 1601 moves to abut against the two sides of the heat sink, the clamping blocks 16 are automatically guided into the slot 1601 by the inclined surface of the slot 1601. When the innermost sides of the two slots 1601 abut against the two sides of the heat sink respectively, the position of the clamping blocks 16 no longer changes. At this time, under the action of the displacement guiding mechanism, the clamping force of the clamping blocks 16 on the heat sink is kept constant by the pressure constant mechanism. When the sliding sleeve 13 stops moving, the heat sink is pushed towards the baffle 1602 by the action of the pushing block 901. When the other two sides of the heat sink abut against the baffle 1602 and the pushing block 901 respectively, the cylinder 7 stops moving and the heat sink moves to the required stamping position.

[0057] Preferably, when the clamping block 16 contacts the heat sink, under the action of the slot 1601, the heat sink first abuts against the inclined surface of the slot 1601, causing the heat sink to automatically move aside and align with the center position of the slot 1601. As the clamping block 16 continues to move, the heat sink gradually enters the slot 1601. Under the action of the slot 1601, it can clamp both sides and provide locking force in the vertical direction. In this process, the slot 1601 plays a guiding role, which can not only position the heat sink and ensure that the heat sink can smoothly enter the slot 1601, but also prevent the side of the clamping block 16 from making hard contact with the heat sink when the center of the slot 1601 is not on the same horizontal plane as the heat sink, which would cause the heat sink to bend under force, thus ensuring the accuracy of the heat sink clamping and effective protection.

[0058] Please see Figures 1-5 , Figures 7-10 The displacement guiding mechanism includes a first movable plate 19 slidably mounted on the support sleeve 14 and slidably connected to the rotating rod 17. The first movable plate 19 abuts against the fixed ring 18. A limiting post 21 is fixed on the first movable plate 19. A guide assembly connected to the limiting post 21 is provided on the receiving plate 6. The guide assembly includes a horizontal groove 602 and a second vertical groove 603 formed on the receiving plate 6. The end of the horizontal groove 602 is connected to the end of the second vertical groove 603. An inclined groove 102 and a first vertical groove 103 are formed on the lifting plate 1. The end of the inclined groove 102 is connected to the end of the first vertical groove 103. The limiting post 21 passes through the horizontal groove 602 and the second vertical groove 603 and is slidably engaged with the inclined groove 102 and the first vertical groove 103.

[0059] Furthermore, the end of the inclined groove 102 away from the first vertical groove 103 and the end of the transverse groove 602 away from the second vertical groove 603 are located on the same central axis. In the initial state, the connecting plate 9 is located at the end of its stroke away from the punch body 3, making the distance between the sliding sleeve 13 and the support ring 25 the largest. At this time, the limiting post 21 penetrates the transverse groove 602 and is located at the end of the stroke of the inclined groove 102 away from the first vertical groove 103. Under the action of the limiting post 21, the first movable plate 19 is located at the end of its stroke towards the sliding sleeve 13 and is fixed. The fixed ring 18 is in a contact state. Under the action of the fixed ring 18, the clamping block 16 is controlled by the rotating rod 17 to be at the end of its stroke towards the sliding sleeve 13. When it is necessary to clamp the heat sink, the connecting plate 9 moves, and the sliding sleeve 13 moves synchronously through the first spring 10, thereby driving the limiting post 21 to move along the length direction of the inclined groove 102. Under the action of the inclined groove 102, the first movable plate 19 moves away from the sliding sleeve 13. Since there is no relative displacement between the sliding sleeve 13 and the receiving plate 6, Therefore, the limiting post 21 will also slide along the transverse groove 602. The first movable plate 19 will drive the rotating rod 17 to move through the pressure constant mechanism, thereby controlling the two clamping blocks 16 to move towards each other until the slot 1601 clamps the heat sink. At this time, the limiting post 21 is still located in the inclined groove 102. At this time, the limiting post 21 continues to slide along the inclined groove 102, and under the action of the pressure constant mechanism, it ensures that the clamping force of the clamping block 16 on the heat sink does not change, so as to prevent the problem of bending caused by excessive clamping force on both sides of the heat sink. When the positioning post 21 disengages from the inclined groove 102, the distance between the first movable plate 19 and the sliding sleeve 13 is at its maximum. The positioning post 21 will be located at the connection position between the horizontal groove 602 and the second vertical groove 603. At this time, the sliding sleeve 13 continues to move, causing the positioning post 21 to slide in the first vertical groove 103. When the sliding sleeve 13 abuts against the support ring 25, the sliding sleeve 13 stops moving, and the positioning post 21 also stops moving. Meanwhile, the receiving plate 6 continues to move, and the positioning post 21 will enter the second vertical groove 603, thereby ensuring that the positioning post 21 will not interfere with the receiving plate 6.

[0060] Preferably, by cooperating with the inclined groove 102 and the limiting post 21, it is possible to control the movement of the two clamping blocks 16 toward the punch press body 3 while simultaneously controlling the movement of the two clamping blocks 16 toward each other, thereby achieving the effect of synchronous transfer and clamping of the heat sink.

[0061] Please see Figures 1-4 , Figures 6-10The pressure constant mechanism includes a first guide groove and a second guide groove formed on the rotating rod 17. A first limiting block 20 that slides and engages with the first guide groove is fixed on the first movable plate 19. An elastic component connected to the second guide groove and the support rod 15 is provided on the rotating rod 17. The elastic component includes a second movable plate 23 that is slidably mounted on the support rod 15 and slidably connected to the rotating rod 17. A second limiting block 24 that slides and engages with the second guide groove is fixed on the second movable plate 23. A second spring 22 is sleeved on the rotating rod 17. The two ends of the second spring 22 abut against the first movable plate 19 and the second movable plate 23, respectively.

[0062] In detail, the first guide groove can be divided into two sections: a straight groove 1701 and a first spiral groove 1702, with one end of each section connected to the other. Similarly, the second guide groove can be divided into two sections: an annular groove 1703 and a second spiral groove 1704, with one end of each section also connected to the other. The spiral angle of the first spiral groove 1702 is the same as the spiral angle formed by the combination of the annular groove 1703 and the second spiral groove 1704, and the pitches of the first spiral groove 1702 and the second spiral groove 1704 are equal. Initially, the second limiting block 24 is located at the end of the stroke of the annular groove 1703 on the side furthest from the second spiral groove 1704, maximizing the distance between the second movable plate 23 and the clamping block 16. When spring 22 is compressed, and the limiting post 21 is located at the end of its stroke on the side of the inclined groove 102 away from the first vertical groove 103, the distance between the first movable plate 19 and the sliding sleeve 13 is minimized. Meanwhile, when spring 22 is compressed, the force provided by spring 22 to the second movable plate 23 maximizes the distance between the clamping block 16 and the first movable plate 19, ensuring that the fixing ring 18 and the first movable plate 19 are in contact. When clamping the heat sink is required, the sliding sleeve 13 will move along the length of the guide post 8, thereby causing the limiting post 21 to slide along the inclined groove 102, causing the first movable plate 19 to move away from the sliding sleeve 13. The second movable plate 23 will move synchronously under the control of the second spring 22. Under the action of the second limiting block 24 and the annular groove 1703, the rotating rod 17 will move synchronously to control the two clamping blocks 16 to move closer to each other. When the heat sink is fully inserted into the slot 1601, the positions of the clamping block 16 and the rotating rod 17 will no longer change. At this time, the first movable plate 19 continues to move and drives the first limiting block 20 to slide along the straight groove 1701. Due to the action of the second limiting block 24 and the annular groove 1703, the position of the second movable plate 23 on the rotating rod 17 will not change. Therefore, the distance between the first movable plate 19 and the second movable plate 23 will decrease, and the second spring 22 will be compressed, causing the clamping block 16 to lift. As the clamping force of the heat sink increases, when the first limiting block 20 disengages from the straight groove 1701 and enters the first spiral groove 1702, the rotating rod 17 will rotate and drive the annular groove 1703 to move, causing the second limiting block 24 to slide within the annular groove 1703. When the second limiting block 24 disengages from the annular groove 1703 and enters the second spiral groove 1704, the rotating rod 17 rotates, and through the cooperation of the first limiting block 20, the first spiral groove 1702, the second limiting block 24, and the second spiral groove 1704, the second movable plate 23 moves synchronously with the first movable plate 19, ensuring that the compression of the second spring 22 no longer changes, thereby maintaining a constant clamping force of the clamping block 16 on the heat sink.

[0063] Preferably, when the first annular groove 1703 engages with the second limiting block 24, the first limiting block 20 engages with the straight groove 1701, preventing the rotating rod 17 from rotating and locking the position of the second movable plate 23. Therefore, the second spring 22 can be compressed before the second limiting block 24 disengages from the annular groove 1703, allowing the clamping force to be gradually increased when the clamping block 16 clamps the heat sink, ensuring the stability of the heat sink clamping. When the increased clamping force reaches a certain value, the second limiting block 24 will disengage from the annular groove 1703 and enter the second spiral groove 1704. At this time, the clamping force of the clamping block 16 will remain constant to avoid the problem of the heat sink bending due to the continuous increase of the clamping force during subsequent movement.

[0064] After the heat sink is stamped, the receiving plate 6 is reset under the action of the cylinder 7. When the limiting ring 12 moves to abut against the sliding sleeve 13, it drives the sliding sleeve 13 to reset. At the same time, when the limiting post 21 disengages from the first vertical groove 103 and returns to the inclined groove 102, the first movable plate 19 is reset. Under the action of the first limiting block 20 and the first spiral groove 1702, the rotating rod 17 rotates towards the initial angle so as to control the second limiting block 24 to return to the annular groove 1703 through the second spiral groove 1704. The first movable plate 19 continues to move so that the clamping block 16 separates from the heat sink. At this time, the heat sink can be taken out and the above steps are repeated to achieve the effect of automatically clamping, positioning and correcting the heat sink and automatically transferring it to the required stamping position in an integrated operation.

[0065] A stamping method for a self-guiding and correcting CNC punch press for aluminum alloy heat sinks includes the following steps:

[0066] Step 1: Place the heat sink to be stamped on the receiving plate 6. Under the action of the translation component, push the receiving plate 6 toward the impact head 5.

[0067] Step 2: The receiving plate 6 will also drive the follow-up pushing mechanism to move, so as to control the movement of the clamping block 16 through the clamping and positioning component. Under the action of the displacement guiding mechanism and the pressure constant mechanism, the clamping and positioning component controls the two clamping blocks 16 to move towards each other.

[0068] Step 3: When the clamping block 16 moves to the position where it engages with the heat sink, the clamping block 16 stops moving. Under the action of the displacement guiding mechanism and the pressure constant mechanism, the pressure of the clamping block 16 on the heat sink remains constant.

[0069] Step 4: The receiving plate 6 continues to move, and under the action of the follow-up pushing mechanism, the heat sink moves to the position where it matches the baffle 1602. At this time, the impact head 5 can be driven by the lifting block 4 to perform a stamping process on the heat sink.

[0070] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0071] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A CNC punching machine for self-guiding and correcting aluminum alloy heat sinks, comprising: A lifting plate (1) and a fixing plate (2) fixedly installed on the lifting plate (1) and arranged symmetrically. A punch press body (3) is fixed on the lifting plate (1). A lifting block (4) is slidably installed on the punch press body (3). An impact head (5) is fixed at the end of the lifting block (4). Its characteristic is that it further includes: A translation component is provided on the lifting plate (1), and a receiving plate (6) is connected to the translation component. A follow-up pushing mechanism is provided on the fixed plate (2) and connected to the receiving plate (6). The follow-up pushing mechanism is provided with a clamping and positioning component. A clamping block (16) is connected to the clamping and positioning component. A slot (1601) is provided on the clamping block (16). A baffle (1602) is fixed on the clamping block (16). The clamping and positioning component can drive the clamping block (16) to move in the horizontal direction when the follow-up pushing mechanism moves. A displacement guiding mechanism is provided on the lifting plate (1) and connected to the clamping and positioning assembly and the receiving plate (6). The clamping and positioning assembly is provided with a pressure constant mechanism connected to the displacement guiding mechanism. The displacement guiding mechanism can move when the receiving plate (6) moves to drive the pressure constant mechanism to move, so as to adjust the clamping force of the clamping block (16) through the clamping and positioning assembly. The follow-up pushing mechanism includes a guide post (8) fixedly installed on the fixed plate (2), a through groove (801) is provided on the guide post (8), a connecting plate (9) is fixedly fixed on the receiving plate (6) and slidably connected to the guide post (8), a push block (901) is fixed on the connecting plate (9), and a driven component connected to the connecting plate (9) is provided on the guide post (8). The driven component includes a push rod (11) fixedly mounted on the connecting plate (9) and slidably connected to the through groove (801). The end of the push rod (11) is fixed with a limiting ring (12) slidably connected to the through groove (801). A sliding sleeve (13) is slidably mounted on the guide post (8). A first spring (10) is sleeved on the guide post (8). The two ends of the first spring (10) abut against the sliding sleeve (13) and the connecting plate (9) respectively. It also includes a support ring (25) that is fixedly installed on the fixed plate (2) and abuts against the sliding sleeve (13); The clamping and positioning assembly includes a support sleeve (14) fixedly installed on the side wall of the sliding sleeve (13) and symmetrically arranged. A support rod (15) is slidably installed inside the support sleeve (14). The support rod (15) is fixedly connected to the clamping block (16). A rotating rod (17) is rotatably installed on the clamping block (16). A fixing ring (18) is fixed to one end of the rotating rod (17) away from the clamping block (16). The displacement guiding mechanism includes a first movable plate (19) that is slidably mounted on the support sleeve (14) and slidably connected to the rotating rod (17). The first movable plate (19) abuts against the fixed ring (18). A limit post (21) is fixed on the first movable plate (19). A guide component connected to the limit post (21) is provided on the receiving plate (6). The guide assembly includes a horizontal groove (602) and a second vertical groove (603) formed on the receiving plate (6), the end of the horizontal groove (602) is connected to the end of the second vertical groove (603), the lifting plate (1) is provided with an inclined groove (102) and a first vertical groove (103), the end of the inclined groove (102) is connected to the end of the first vertical groove (103), and the limiting post (21) passes through the horizontal groove (602) and the second vertical groove (603) and slides into the inclined groove (102) and the first vertical groove (103); The pressure constant mechanism includes a first guide groove and a second guide groove formed on the rotating rod (17), a first limiting block (20) that slides and fits into the first guide groove is fixed on the first movable plate (19), and an elastic component connected to the second guide groove and the support rod (15) is provided on the rotating rod (17). The elastic component includes a second movable plate (23) that is slidably mounted on the support rod (15) and slidably connected to the rotating rod (17). A second limiting block (24) that is slidably fitted into the second guide groove is fixed on the second movable plate (23). A second spring (22) is sleeved on the rotating rod (17). The two ends of the second spring (22) abut against the first movable plate (19) and the second movable plate (23) respectively.

2. The self-guiding and corrective CNC punching machine for aluminum alloy heat sinks according to claim 1, characterized in that, The translation component includes a groove (101) opened on the lifting plate (1), a sliding block (601) is slidably installed in the groove (101), the sliding block (601) is fixedly connected to the receiving plate (6), and a cylinder (7) fixedly connected to the sliding block (601) is fixedly installed at the bottom of the lifting plate (1).

3. A stamping method for a self-guiding and correcting CNC punch press for aluminum alloy heat sinks, comprising using the self-guiding and correcting CNC punch press for aluminum alloy heat sinks as described in any one of claims 1-2, characterized in that, Includes the following steps: Step 1: Place the heat sink to be stamped on the receiving plate (6), and under the action of the translation component, push the receiving plate (6) toward the impact head (5); Step 2: The receiving plate (6) will also drive the follow-up pushing mechanism to move, so as to control the movement of the clamping block (16) through the clamping and positioning component. Under the action of the displacement guiding mechanism and the pressure constant mechanism, the clamping and positioning component controls the two clamping blocks (16) to move towards each other. Step 3: When the clamping block (16) moves to the position where it engages with the heat sink, the clamping block (16) stops moving. Under the action of the displacement guiding mechanism and the pressure constant mechanism, the pressure of the clamping block (16) on the heat sink remains constant. Step 4: The receiving plate (6) continues to move, and under the action of the follow-up pushing mechanism, the heat sink moves to the position that matches the baffle (1602). At this time, the impact head (5) can be driven by the lifting block (4) to perform stamping on the heat sink.

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