Aluminum alloy cooling fin self-guiding deviation rectifying numerical control punching machine and punching method thereof

Abstract

The invention relates to the technical field of numerical control punching machines, in particular to an aluminum alloy cooling fin self-guiding deviation rectifying numerical control punching machine and a punching method thereof.The aluminum alloy cooling fin self-guiding deviation rectifying numerical control punching machine comprises a lifting plate and fixing plates fixedly installed on the lifting plate and symmetrically arranged, a punching machine body is fixed to the lifting plate, and a lifting block is slidably installed on the punching machine body; an impact head is fixed at the end of the lifting block; the translation assembly is arranged on the lifting plate, and a bearing plate is connected to the translation assembly; the follow-up pushing mechanism is arranged on the fixing plate and connected with the bearing plate, a clamping and positioning assembly is arranged on the follow-up pushing mechanism, a clamping block is connected to the clamping and positioning assembly, a clamping groove is formed in the clamping block, and a baffle is fixed to the clamping block; and the displacement guiding mechanism is arranged on the lifting plate and connected with the clamping and positioning assembly and the bearing plate, the clamping and positioning assembly is provided with a pressure constant mechanism connected with the displacement guiding mechanism, the clamping pressure can be constant, and it is guaranteed that the cooling fins cannot deform during stamping.

Description

Technical Field

[0001] The invention relates to the technical field of CNC punching machines, in particular to a self-guided and deflection-correcting CNC punching machine for an aluminum alloy heat sink and a punching method thereof. Background Art

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

[0003] Aluminum alloy has good thermal conductivity and can quickly transfer heat from the radiator surface to the entire radiator material. When a high-temperature object touches the radiator surface, the heat quickly diffuses through the aluminum alloy material to the entire radiator.

[0004] When producing aluminum alloy heat sinks, it is usually necessary to stamp specific positions. On traditional production lines, workers need to spend time positioning and adjusting. Especially when producing heat sinks with small batches or complex shapes, the difficulty and risk of manual operation increase. If the positioning is assisted by clamping the workpiece, when clamping on both sides of the length direction, due to the low strength of the heat sink, if the clamping force is too large, it may cause the heat sink to bend. If the clamping force is too small, the positioning accuracy will be low and it is easy to loosen. Summary of the invention

[0005] The object of the present invention is to provide a self-guided and deflection-correcting CNC punch press for aluminum alloy heat sinks and a punching method thereof, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A self-guided and deflection-correcting CNC punching machine for aluminum alloy heat sinks, comprising:

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

[0009] Also includes:

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

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

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

[0013] As a further solution of the present invention: the translation assembly includes a slide groove opened on the lifting plate, a sliding block is slidably installed in the slide 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 solution of the present invention: the follow-up pushing mechanism includes a guide column fixedly mounted on the fixed plate, a through groove is provided on the guide column, a connecting plate slidably connected to the guide column is fixed on the receiving plate, a pushing block is fixed on the connecting plate, and a driven component connected to the connecting plate is provided on the guide column.

[0015] As a further solution of the present invention: the driven assembly includes a push rod fixedly mounted on the connecting plate and slidably connected to the through slot, a limit ring slidably connected to the through slot is fixed to the end of the push rod, a sliding sleeve is slidably mounted on the guide column, a first spring is sleeved on the guide column, and two ends of the first spring are respectively in contact with the sliding sleeve and the connecting plate;

[0016] It also includes a support ring which is fixedly mounted on the fixed plate and abuts against the sliding sleeve.

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

[0018] As a further solution of the present invention: the displacement guiding mechanism includes a first movable plate slidably mounted on the supporting sleeve and slidably connected to the rotating rod, the first movable plate is in abutment with the fixing ring, a limiting column is fixed on the first movable plate, and a guide assembly connected to the limiting column is provided on the supporting plate.

[0019] As a further solution of the present invention: the guide assembly includes a transverse groove and a second vertical groove provided on the supporting plate, the end of the transverse groove is connected to the end of the second vertical groove, the lifting plate is provided with an oblique groove and a first vertical groove, the end of the oblique groove is connected to the end of the first vertical groove, the limiting column passes through the transverse groove and the second vertical groove, and is slidably engaged with the oblique groove and the first vertical groove.

[0020] As a further solution of the present invention: the constant pressure mechanism includes a first guide groove and a second guide groove opened on the rotating rod, a first limit block slidingly engaged with the first guide groove is fixed on the first movable plate, and an elastic component connected with the second guide groove and the support rod is provided on the rotating rod.

[0021] As a further solution 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 limit block slidably engaged with the second guide groove is fixed on the second movable plate, a second spring is sleeved on the rotating rod, and two ends of the second spring are respectively abutted against the first movable plate and the second movable plate.

[0022] A punching method of an aluminum alloy heat sink self-guided deviation-correcting CNC punch press comprises the following steps:

[0023] Step 1: Place the heat sink to be stamped on the receiving plate, and push the receiving plate toward the impact head under the action of the translation assembly;

[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 positioning component, and under the action of the displacement guiding mechanism and the constant pressure mechanism, the two clamping blocks are controlled by the clamping positioning component to move toward the direction of approaching each other;

[0025] Step 3: When the clamping block moves to the position where it matches the heat sink, the clamping block stops moving, and the pressure of the clamping block on the heat sink is kept constant under the action of the displacement guide mechanism and the pressure constant mechanism;

[0026] Step 4: The receiving plate continues to move, and under the action of the follow-up pushing mechanism, the heat sink moves to a position that cooperates with the baffle. At this time, the impact head can be driven by the lifting block to punch the heat sink.

[0027] Compared with the prior art, the beneficial effect of the present invention is that the present invention can automatically clamp, position and correct the heat sink to ensure that the stamping position will not be offset. Specifically, when the translation component moves, it drives the receiving plate to move, thereby driving the follow-up pushing mechanism to move, so as to control the two clamping blocks to translate toward the desired stamping position through the clamping and positioning component. At the same time, under the action of the displacement guiding mechanism and the constant pressure mechanism, the two clamping blocks move in a direction close to each other to clamp the heat sink. When the slot cooperates with the heat sink, it means that the short sides of the heat sink are clamped. At this time, the follow-up pushing mechanism will control the relative displacement of the clamping block and the receiving plate, so as 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 desired clamping position. Through the above operation, the heat sink can be clamped on all sides while controlling the heat sink to move accurately to the desired stamping position.

[0028] When the clamping block contacts the heat sink, under the action of the slot, the heat sink first abuts against the inclined surface of the slot, so that the heat sink automatically gives way and aligns with the center of the slot. As the clamping block continues to move, the heat sink gradually enters the slot. In this process, the slot plays a guiding role, which can not only position the heat sink to ensure that the heat sink can enter the slot smoothly, but also prevent the center of the slot from being in the same horizontal plane as the heat sink, causing the side of the clamping block to come into hard contact with the heat sink, which causes the heat sink to bend under force, etc., thereby ensuring the accuracy of the heat sink clamping and effective protection.

[0029] When the slot is completely inserted into the side of the heat sink, the second spring can be compressed before the second limit block disengages from the annular groove, so that when the clamping block clamps the heat sink, the clamping force can be gradually increased to ensure the stability of the clamping. When the increased clamping force reaches a certain value, the second limit block will disengage from the annular groove and enter the second spiral groove. At this time, the clamping force of the clamping block will remain constant to avoid the problem of the heat sink bending caused by the continuous increase in clamping force during the subsequent movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 The present invention is a structural schematic diagram of an embodiment of a self-guided deviation-correcting CNC punching machine for aluminum alloy heat sinks.

[0031] Figure 2 It is a structural schematic diagram of another angle in an embodiment of a self-guided and deflection-correcting CNC punching machine for aluminum alloy heat sinks.

[0032] Figure 3 The present invention is a schematic diagram of the connection relationship among a receiving plate, a follow-up pushing mechanism, a clamping and positioning assembly, and a clamping block in one embodiment of a self-guided and deflection-correcting CNC punching machine for aluminum alloy heat sinks.

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

[0034] Figure 5 The present invention is a structural schematic diagram of a supporting plate, a receiving plate and a part of a displacement guiding mechanism in one embodiment of a self-guided deviation-correcting CNC punching machine for aluminum alloy heat sinks.

[0035] Figure 6 The present invention is a schematic diagram of the connection relationship among a follow-up pushing mechanism, a clamping and positioning assembly, a partial displacement guiding mechanism, and a partial pressure constant mechanism in one embodiment of a self-guided deviation-correcting CNC punching machine for aluminum alloy heat sinks.

[0036] Figure 7 The present invention is a structural schematic diagram of a part of the follow-up pushing mechanism, the clamping and positioning assembly, the clamping block, the baffle plate and the slot in one embodiment of a self-guided deviation-correcting CNC punching machine for aluminum alloy heat sink.

[0037] Figure 8 It is a structural schematic diagram of a clamping and positioning component, a partial displacement guiding mechanism, and a partial pressure constant mechanism in an embodiment of a self-guided and deflection-correcting CNC punching machine for aluminum alloy heat sinks.

[0038] Fig. 9 It is a schematic diagram of a partial half-section structure of an embodiment of a self-guided and deflection-correcting CNC punching machine for aluminum alloy heat sinks.

[0039] Fig.10 The exploded structural diagram of a clamping and positioning assembly, a partial displacement guiding mechanism, and a partial pressure constant mechanism in one embodiment of a self-guided and deflection-correcting CNC punching machine for aluminum alloy heat sinks is provided.

[0040] In the figure: 1, lifting plate; 101, slide; 102, inclined slot; 103, first vertical slot; 2, fixed plate; 3, punch body; 4, lifting block; 5, impact head; 6, receiving plate; 601, sliding block; 602, horizontal slot; 603, second vertical slot; 7, cylinder; 8, guide column; 801, through slot; 9, connecting plate; 901, pushing block; 10, first spring; 11, push rod; 12, limit 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. Fixed ring; 19. First movable plate; 20. First limit block; 21. Limit column; 22. Second spring; 23. Second movable plate; 24. Second limit block; 25. Support ring. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] In addition, when an element in the present invention is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only embodiment.

[0043] See also Figures 1 to 10 In an embodiment of the present invention, a self-guided and deflection-correcting CNC punching machine for an aluminum alloy heat sink comprises:

[0044] A lifting plate 1, and a fixing plate 2 fixedly mounted on the lifting plate 1 and symmetrically arranged, a punch body 3 is fixed on the lifting plate 1, a lifting block 4 is slidably mounted on the punch body 3, and an impact head 5 is fixed at the end of the lifting block 4;

[0045] Also includes:

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

[0047] A follow-up pushing mechanism is arranged on the fixed plate 2 and connected to the receiving plate 6. A clamping and positioning assembly is arranged on the follow-up pushing mechanism. A clamping block 16 is connected to the clamping and positioning assembly. A clamping slot 1601 is provided on the clamping block 16. A baffle 1602 is fixed on the clamping block 16. The clamping and positioning assembly 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 arranged on the lifting plate 1 and is connected to the clamping positioning assembly and the receiving plate 6. The clamping positioning assembly is provided with a constant pressure mechanism connected to the displacement guiding mechanism. The displacement guiding mechanism can be activated when the receiving plate 6 moves to drive the constant pressure mechanism to move, so as to adjust the clamping force of the clamping block 16 through the clamping positioning assembly.

[0049] Specifically, when stamping the heat sink, the heat sink can be placed on the receiving plate 6, and under the action of the translation component, the heat sink is driven to move toward the impact head 5 through the receiving plate 6, and the translation component will also drive the follow-up push mechanism to move, and control the movement of the clamping block 16 through the clamping positioning component. At the same time, the receiving plate 6 will also control the displacement guide mechanism to control the two clamping blocks 16 to move toward each other through the clamping positioning component. When the clamping block 16 controls the slot 1601 to be inserted into the side of the heat sink, the heat sink can be clamped in the horizontal and vertical directions. At the same time, Under the action of the constant pressure mechanism, the clamping force provided by the clamping block 16 to the heat sink is kept constant to prevent the heat sink from being deformed due to excessive clamping force. Under the action of the follow-up pushing mechanism, a certain displacement difference can be controlled 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 perform stamping on 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 be deformed.

[0050] See also Figure 1-Figure 3 The translation assembly includes a slide groove 101 opened on the lifting plate 1, a sliding block 601 is slidably installed in the slide 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 fixed at the bottom of the lifting plate 1.

[0051] In detail, in the initial state, under the action of the cylinder 7, the sliding block 601 is located at the end of the stroke away from the side of the punch body 3. A driving source is provided on the punch body 3, which is used to drive the impact head 5 to reciprocate in the vertical direction through the lifting block 4. This is the application of the prior art and will not be elaborated in this application. When it is necessary to stamp the heat sink, the heat sink can be placed on the receiving plate 6. At this time, the 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 to control the heat sink to move toward the impact head 5. When the required stamping position of the heat sink moves to cooperate with the impact head 5, the cylinder 7 stops working, and under the action of the impact head 5, the heat sink is impacted. After the impact is completed, the cylinder 7 controls the receiving plate 6 to reset, and repeats the above steps to achieve the stamping of the heat sink.

[0052] See also Figure 1-Figure 3 , Figure 6 , Figure 7The follow-up pushing mechanism includes a guide column 8 fixedly mounted on the fixed plate 2, a through groove 801 is provided on the guide column 8, a connecting plate 9 slidably connected to the guide column 8 is fixed on the receiving plate 6, a pushing block 901 is fixed on the connecting plate 9, and a driven component connected to the connecting plate 9 is provided on the guide column 8, wherein the driven component includes a push rod 11 fixedly mounted on the connecting plate 9 and slidably connected to the through groove 801, a limit ring 12 slidably connected to the through groove 801 is fixed at the end of the push rod 11, a sliding sleeve 13 is slidably mounted on the guide column 8, a first spring 10 is sleeved on the guide column 8, and the two ends of the first spring 10 are respectively abutted against the sliding sleeve 13 and the connecting plate 9; and also includes a support ring 25 fixedly mounted on the fixed plate 2 and abutting against the sliding sleeve 13.

[0053] It should be noted that two guide columns 8 are provided, so that the clamping positioning assembly and the clamping block 16 are symmetrically arranged, and the support ring 25 is hollow, and the size of the hollow part is larger than the size of the limit ring 12 and 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 the stroke away from the side of the punch body 3, and the first spring 10 is in a compressed state, so that the sliding sleeve 13 is located at the end of the stroke away from the connecting plate 9 and is in abutment with the limit ring 12. At this time, the distance between the sliding sleeve 13 and the support ring 25 is When the heat sink needs to be stamped, the heat sink to be processed can be placed on the receiving plate 6, and the heat sink is controlled to be located 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 column 8 and the slide groove 101 are arranged in parallel, the connecting plate 9 will move along the length direction of the guide column 8, and the sliding sleeve 13 will be driven 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 direction of the through slot 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, so as to drive the clamping block 16 to move. Under the action of the displacement guide mechanism, the two clamping blocks 16 move toward each other and clamp the heat sink through the slot 1601. When the short side of the heat sink is clamped, the connecting plate 9 continues to move. When the limiting ring 12 passes over the supporting ring 25 and the sliding sleeve When the cylinder 13 abuts against the support ring 25, the sliding sleeve 13 no longer moves, so that the position of the clamping block 16 remains unchanged, the connecting plate 9 continues to move and compresses the first spring 10, and the connecting plate 9 also drives the pushing block 901 to move. When the pushing block 901 moves until it abuts against the heat sink, the heat sink is controlled to move toward 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 under the action of the impact head 5, the heat sink is stamped.

[0054] Preferably, the first spring 10 can be used to control the synchronous movement of the connecting plate 9 and the sliding sleeve 13. During this period, the clamping block 16 will perform a clamping action on the heat sink. When the two sides of the heat sink are clamped, the sliding sleeve 13 abuts against the support ring 25, and the first spring 10 is compressed. Under the action of the pushing block 901, the clamping action is performed on the other two sides of the heat sink, thereby achieving four-sided clamping of the heat sink and positioning the heat sink to ensure that the heat sink is in the required stamping position after clamping is completed.

[0055] See also Figure 1-Figure 4 , Figure 6-Figure 10The clamping and positioning assembly includes a supporting sleeve 14 fixedly mounted on the side wall of the sliding sleeve 13 and symmetrically arranged, a supporting rod 15 is slidably mounted in the supporting sleeve 14, the supporting rod 15 is fixedly connected to the clamping block 16, a rotating rod 17 is rotatably mounted on the clamping block 16, and a fixing ring 18 is fixed to the end of the rotating rod 17 facing away from the clamping block 16.

[0056] Furthermore, the heat sink is composed of a horizontally arranged aluminum alloy sheet and a plurality of vertically arranged fins, so that the strength of the heat sink on both sides along the fin direction is higher, and the strength on both sides perpendicular to the heat sink fin direction is lower. In the initial state, the baffle 1602 on the clamping block 16 is located on the outside of the receiving plate 6. Under the action of the displacement guiding mechanism, the support rod 15 is located at the end of the stroke in the support sleeve 14, so that the distance between the clamping block 16 and the sliding sleeve 13 is minimized. 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 direction of the guide column 8, the support sleeve 14 is driven to move, thereby driving the clamping block 16 to move toward the impact head 5 through the support rod 15. Under the action of the displacement guiding mechanism, the rotating rod 17 is controlled to move in the direction away from the sliding sleeve 13, so as to drive the two clamping blocks 16 to move in the direction close to each other. The clamping block 16 It will also drive the slot 1601 to move. Under the action of the slot 1601, the ends of the two clamping blocks 16 that are close to each other are set in an isosceles trapezoidal opening, and 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, under the action of the inclined surface of the slot 1601, the clamping block 16 is automatically guided into the slot 1601, and when the innermost sides of the two slots 1601 abut against the two sides of the heat sink respectively, the position of the clamping block 16 no longer changes. At this time, under the action of the displacement guiding mechanism, the clamping force of the clamping block 16 on the heat sink is controlled to remain unchanged through the constant pressure mechanism. When the sliding sleeve 13 no longer moves, under the action of the pushing block 901, the heat sink is pushed to move toward the baffle 1602. 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, so that the heat sink automatically gives way and is aligned 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 a locking force in the vertical direction. In this process, the slot 1601 plays a guiding role, which can not only position the heat sink to ensure that the heat sink can smoothly enter the slot 1601, but also prevent the center of the slot 1601 from being in the same horizontal plane as the heat sink, resulting in hard contact between the side of the clamping block 16 and the heat sink, which causes the heat sink to bend due to force, etc., thereby ensuring the accuracy of the heat sink clamping and effective protection.

[0058] See also Figure 1-Figure 5 , Figure 7-Figure 10 The displacement guiding mechanism comprises a first movable plate 19 which is slidably mounted on the supporting sleeve 14 and slidably connected to the rotating rod 17, the first movable plate 19 is in abutment with the fixing ring 18, a limiting column 21 is fixed on the first movable plate 19, and a guiding assembly connected to the limiting column 21 is provided on the receiving plate 6, wherein the guiding assembly comprises a transverse groove 602 and a second vertical groove 603 provided on the receiving plate 6, the end of the transverse groove 602 is connected to the end of the second vertical groove 603, an inclined groove 102 and a first vertical groove 103 are provided 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 column 21 passes through the transverse 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 at the same central axis position. In the initial state, the connecting plate 9 is located at the end of the stroke away from the punch body 3, so that the distance between the sliding sleeve 13 and the support ring 25 is the largest. At this time, the limiting column 21 passes through the transverse groove 602 and is located at the end of the stroke on the side of the inclined groove 102 away from the first vertical groove 103. Under the action of the limiting column 21, the first movable plate 19 is located at the end of the stroke toward the sliding sleeve 13 and is in contact with the fixed plate 19. The fixed ring 18 is in an abutting state. Under the action of the fixed ring 18, the clamping block 16 is controlled by the rotating rod 17 to be located at the end of the stroke in the direction of the sliding sleeve 13. When the heat sink needs to be clamped, the connecting plate 9 moves, and the sliding sleeve 13 is driven to move synchronously through the first spring 10, thereby driving the limiting column 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 in the direction away from the sliding sleeve 13. Since there is no relative displacement between the sliding sleeve 13 and the receiving plate 6, At this time, the limiting column 21 will also slide along the transverse groove 602, and the first movable plate 19 will drive the rotating rod 17 to move through the constant pressure mechanism, thereby controlling the two clamping blocks 16 to move in a direction close to each other, until the slot 1601 clamps the heat sink, and the limiting column 21 is still located in the inclined groove 102. At this time, the limiting column 21 continues to slide along the inclined groove 102, and under the action of the constant pressure mechanism, it is ensured 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 column 21 is separated from the inclined groove 102, the distance between the first movable plate 19 and the sliding sleeve 13 is the largest, and the limiting column 21 will be located at the connection position between the transverse groove 602 and the second vertical groove 603. At this time, the sliding sleeve 13 continues to move, so that the limiting column 21 slides in the first vertical groove 103. When the sliding sleeve 13 abuts against the support ring 25, the sliding sleeve 13 no longer moves, and the limiting column 21 also stops moving. The receiving plate 6 continues to move, and the limiting column 21 will enter the second vertical groove 603, thereby ensuring that the limiting column 21 will not interfere with the receiving plate 6.

[0060] Preferably, by cooperating with the inclined slot 102 and the limiting column 21, the two clamping blocks 16 can be controlled to move toward the punch body 3 while being controlled to move toward each other, thereby achieving the effect of synchronously transporting and clamping the heat sink.

[0061] See also Figure 1-Figure 4 , Figure 6-Figure 10The constant pressure mechanism includes a first guide groove and a second guide groove provided on the rotating rod 17, a first limit block 20 slidably engaged with the first guide groove is fixed on the first movable plate 19, an elastic component connected with the second guide groove and the support rod 15 is provided on the rotating rod 17, wherein the elastic component includes a second movable plate 23 slidably mounted on the support rod 15 and slidably connected with the rotating rod 17, a second limit block 24 slidably engaged with the second guide groove is fixed on the second movable plate 23, a second spring 22 is sleeved on the rotating rod 17, and the two ends of the second spring 22 are respectively abutted against the first movable plate 19 and the second movable plate 23.

[0062] In detail, the first guide groove can be divided into two sections, namely the straight groove 1701 and the first spiral groove 1702, one end of which is connected to each other, and the second guide groove can also be divided into two sections, namely the annular groove 1703 and the second spiral groove 1704, one end of which is also connected to each 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 pitch of the first spiral groove 1702 and the second spiral groove 1704 is equal. In the initial state, the second limit block 24 is located at the end of the stroke of the annular groove 1703 away from the second spiral groove 1704, so that the distance between the second movable plate 23 and the clamping block 16 is the largest, and the second The spring 22 is in a compressed state. Since the limiting column 21 is located at the end of the stroke of the side of the inclined slot 102 away from the first vertical slot 103, the distance between the first movable plate 19 and the sliding sleeve 13 is minimized. The second spring 22 is in a compressed state. Under the action of the thrust provided by the second spring 22 to the second movable plate 23, the distance between the clamping block 16 and the first movable plate 19 is maximized, so that the fixing ring 18 and the first movable plate 19 are in abutment. When the heat sink needs to be clamped, the sliding sleeve 13 will move along the length direction of the guide column 8, thereby driving the limiting column 21 to slide along the inclined slot 102, so that the first movable plate 19 moves in the direction away from the sliding sleeve 13. The first movable plate 19 The second movable plate 23 will be controlled to move synchronously by the second spring 22. Under the action of the second limit block 24 and the annular groove 1703, the rotating rod 17 will move synchronously to control the two clamping blocks 16 to approach 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 limit block 20 to slide along the straight groove 1701. Due to the action of the second limit 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 is reduced, and the second spring 22 is compressed, so that the clamping block 16 is lifted. The clamping force supplied to the heat sink increases. When the first limit 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, so that the second limit block 24 slides in the annular groove 1703. When the second limit block 24 disengages from the annular groove 1703 and enters the second spiral groove 1704, at this time, when the rotating rod 17 rotates, through the cooperation of the first limit block 20 and the first spiral groove 1702 and the second limit block 24 and the second spiral groove 1704, the second movable plate 23 follows the first movable plate 19 to move synchronously, ensuring that the compression amount of the second spring 22 no longer changes, thereby maintaining the clamping force of the clamping block 16 on the heat sink.

[0063] Preferably, when the first annular groove 1703 cooperates with the second limit block 24, since the first limit block 20 cooperates with the straight groove 1701, the rotating rod 17 will not rotate, so that the position of the second movable plate 23 is locked. Therefore, before the second limit block 24 disengages from the annular groove 1703, the second spring 22 can be compressed to achieve that when the clamping block 16 clamps the heat sink, the clamping force can be gradually increased to ensure the stability of the clamping of the heat sink. When the increased clamping force reaches a certain value, the second limit 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 caused by the continuous increase in the clamping force during the subsequent movement.

[0064] Among them, when the stamping of the heat sink is completed, under the action of the cylinder 7, the receiving plate 6 is reset, and when the limit ring 12 moves to abut against the sliding sleeve 13, the sliding sleeve 13 is driven to reset. At the same time, when the limit column 21 disengages from the first vertical groove 103 and returns to the inclined groove 102, the first movable plate 19 is reset, and under the action of the first limit block 20 and the first spiral groove 1702, the rotating rod 17 is rotated toward the initial angle to control the second limit block 24 to return to the annular groove 1703 through the second spiral groove 1704, and the first movable plate 19 continues to move to separate the clamping block 16 from the heat sink. At this time, the heat sink can be taken out and the above steps are repeated, so as to achieve the effect of automatically clamping, positioning and correcting the heat sink, and automatically transporting it to the required stamping position for integrated operation.

[0065] A punching method of an aluminum alloy heat sink self-guided deviation-correcting CNC punch press comprises the following steps:

[0066] Step 1: Place the heat sink to be stamped on the receiving plate 6, and push the receiving plate 6 toward the impact head 5 under the action of the translation assembly;

[0067] Step 2: The receiving plate 6 also drives the follower pushing mechanism to move, so as to control the movement of the clamping block 16 through the clamping positioning assembly, and under the action of the displacement guiding mechanism and the constant pressure mechanism, the two clamping blocks 16 are controlled by the clamping positioning assembly to move toward each other;

[0068] Step 3: When the clamping block 16 moves to the position matching with the heat sink, the clamping block 16 stops moving, and the pressure of the clamping block 16 on the heat sink is kept constant under the action of the displacement guide mechanism and the constant pressure mechanism;

[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 a position that cooperates with the baffle 1602. At this time, the lifting block 4 can drive the impact head 5 to perform stamping on the heat sink.

[0070] It will be apparent to those skilled in the art that the 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 the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0071] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A self-guided and deflection-correcting CNC punching machine for aluminum alloy heat sinks, comprising: A lifting plate (1), and a fixing plate (2) fixedly mounted on the lifting plate (1) and symmetrically arranged, a punch body (3) being fixed on the lifting plate (1), a lifting block (4) being slidably mounted on the punch body (3), and an impact head (5) being fixed at the end of the lifting block (4); It is characterized by further comprising: A translation assembly is arranged on the lifting plate (1), and a receiving plate (6) is connected to the translation assembly; A follow-up pushing mechanism is arranged on the fixed plate (2) and connected to the receiving plate (6); a clamping and positioning component is arranged on the follow-up pushing mechanism; a clamping block (16) is connected to the clamping and positioning component; a clamping slot (1601) is provided on the clamping block (16); a baffle (1602) is fixed on the clamping block (16); and the clamping and positioning component can drive the clamping block (16) to move in a horizontal direction when the follow-up pushing mechanism moves; A displacement guiding mechanism is arranged on the lifting plate (1) and is connected to the clamping positioning assembly and the receiving plate (6); the clamping positioning assembly is provided with a pressure constant mechanism connected to the displacement guiding mechanism; the displacement guiding mechanism can be actuated 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 positioning assembly.

2. The self-guided and deflection-correcting CNC punch press for aluminum alloy heat sink according to claim 1, characterized in that: The translation assembly comprises a slide groove (101) provided on the lifting plate (1), a sliding block (601) being slidably installed in the slide 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) being fixedly provided at the bottom of the lifting plate (1).

3. The self-guided and deflection-correcting CNC punch press for aluminum alloy heat sink according to claim 1, characterized in that: The follow-up pushing mechanism comprises a guide column (8) fixedly mounted on the fixed plate (2), a through slot (801) being provided on the guide column (8), a connecting plate (9) slidably connected to the guide column (8) being fixed on the receiving plate (6), a pushing block (901) being fixed on the connecting plate (9), and a driven component connected to the connecting plate (9) being provided on the guide column (8).

4. The self-guided and deflection-correcting CNC punching machine for aluminum alloy heat sink according to claim 3 is characterized in that: The driven assembly comprises a push rod (11) fixedly mounted on the connecting plate (9) and slidably connected to the through slot (801), a limit ring (12) slidably connected to the through slot (801) being fixed to the end of the push rod (11), a sliding sleeve (13) slidably mounted on the guide column (8), a first spring (10) being sleeved on the guide column (8), and two ends of the first spring (10) respectively abutting against the sliding sleeve (13) and the connecting plate (9); It also includes a support ring (25) which is fixedly mounted on the fixed plate (2) and is in abutment with the sliding sleeve (13).

5. The self-guided and deflection-correcting CNC punching machine for aluminum alloy heat sink according to claim 4 is characterized in that: The clamping and positioning assembly comprises a supporting sleeve (14) fixedly mounted on the side wall of the sliding sleeve (13) and arranged symmetrically, a supporting rod (15) being slidably mounted in the supporting sleeve (14), the supporting rod (15) being fixedly connected to the clamping block (16), a rotating rod (17) being rotatably mounted on the clamping block (16), and a fixing ring (18) being fixed to one end of the rotating rod (17) which is away from the clamping block (16).

6. The self-guided and deflection-correcting CNC punching machine for aluminum alloy heat sink according to claim 5, characterized in that: The displacement guiding mechanism comprises a first movable plate (19) slidably mounted on the supporting sleeve (14) and slidably connected to the rotating rod (17); the first movable plate (19) is in abutment with the fixing ring (18); a limiting column (21) is fixed on the first movable plate (19); and a guiding assembly connected to the limiting column (21) is provided on the receiving plate (6).

7. The self-guided and deflection-correcting CNC punching machine for aluminum alloy heat sink according to claim 6, characterized in that: The guide assembly comprises a transverse groove (602) and a second vertical groove (603) provided on the receiving plate (6), the end of the transverse groove (602) being connected to the end of the second vertical groove (603); an inclined groove (102) and a first vertical groove (103) are provided on the lifting plate (1), the end of the inclined groove (102) being connected to the end of the first vertical groove (103); the limiting column (21) passes through the transverse groove (602) and the second vertical groove (603), and is slidably engaged with the inclined groove (102) and the first vertical groove (103).

8. The self-guided and deflection-correcting CNC punching machine for aluminum alloy heat sink according to claim 6, characterized in that: The constant pressure mechanism comprises a first guide groove and a second guide groove provided on the rotating rod (17); a first limit block (20) slidably engaged with the first guide groove is fixed on the first movable plate (19); and an elastic component connected with the second guide groove and the support rod (15) is provided on the rotating rod (17).

9. The self-guided and deflection-correcting CNC punching machine for aluminum alloy heat sink according to claim 8, characterized in that: The elastic component comprises a second movable plate (23) slidably mounted on the support rod (15) and slidably connected to the rotating rod (17); a second limit block (24) slidably engaged with the second guide groove is fixed on the second movable plate (23); a second spring (22) is sleeved on the rotating rod (17); two ends of the second spring (22) are respectively in contact with the first movable plate (19) and the second movable plate (23).

10. A punching method of an aluminum alloy heat sink self-guided and deflection-correcting CNC punch press, using the aluminum alloy heat sink self-guided and deflection-correcting CNC punch press as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: placing the heat sink to be stamped on the receiving plate (6), and pushing the receiving plate (6) toward the impact head (5) under the action of the translation assembly; Step 2: The receiving plate (6) also drives the follower pushing mechanism to move, so as to control the movement of the clamping block (16) through the clamping positioning assembly, and under the action of the displacement guiding mechanism and the constant pressure mechanism, the two clamping blocks (16) are controlled by the clamping positioning assembly to move in a direction close to each other; Step 3: When the clamping block (16) moves to a position where it cooperates with the heat sink, the clamping block (16) stops moving, and under the action of the displacement guiding mechanism and the pressure constant mechanism, the pressure of the clamping block (16) on the heat sink is kept 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 a position where it cooperates with 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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