A fin die-casting mold

Abstract

The application discloses a heat dissipation fin die-casting die, which comprises a fixed die and a movable die, four limit columns are arranged on one side of the movable die, four limit grooves are arranged on one side of the fixed die, and the positions of the limit grooves and the limit columns are corresponding, a mounting frame is fixedly arranged on the other side of the fixed die, a first die body is adaptively inserted on one side of the fixed die, a second die body is adaptively inserted on one side of the movable die, a dismounting mechanism is arranged on the outer sides of the fixed die and the movable die, and an ejection mechanism is arranged in the inner cavity of the fixed die. Through the double die and the dismounting mechanism, the accurate butt joint between the die bodies is realized, the cavity closing precision is ensured, through the double positioning design, the occurrence rate of defects such as flash and size out-of-tolerance of the die-casting parts is greatly reduced, and the product qualified rate is greatly improved.

Description

Technical Field

[0001] This invention relates to the field of ( ) technology, specifically to a heat sink die-casting mold. Background Technology

[0002] As electronic devices rapidly develop towards higher power and miniaturization, the structural complexity and production precision requirements of heat sinks, as core heat dissipation components, are constantly increasing. Die casting has become the mainstream process for mass production of heat sinks due to its advantages such as high production efficiency and good molding precision. The performance of die casting molds directly determines the product quality and production efficiency of heat sinks.

[0003] Currently, the mold closing accuracy of heat sink die casting molds is insufficient. Traditional molds mostly rely on simple guiding structures, which are prone to misalignment during mold closing, resulting in defects such as flash and dimensional deviations in the die castings. In addition, the molds wear out significantly after long-term use, requiring the entire mold to be replaced, which results in high maintenance costs. Furthermore, the ejector pins are the most prone to wear and are difficult to replace after wear. Summary of the Invention

[0004] The purpose of this invention is to provide a heat sink die-casting mold to solve the problems in the above-mentioned background art where the mold wears out significantly after long-term use, requiring complete mold replacement, resulting in high maintenance costs, and the top pillars being the most prone to wear and difficult to replace after wear.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a heat sink die-casting mold, comprising: Fixed mold and moving mold; The moving mold has four corner limit posts on one side, and the fixed mold has four corner limit grooves on one side, with the limit grooves corresponding to the positions of the limit posts. The mounting bracket is fixedly installed on the other side of the fixed mold; The first mold body is adapted to be inserted into one side of the fixed mold; The second mold body is adapted to be inserted into one side of the moving mold; The disassembly and fixing mechanism is located on the outside of the fixed mold and the moving mold; An ejection mechanism is located inside the cavity of the fixed mold.

[0006] Preferably, the cavities of the fixed mold and the moving mold are provided with cooling channels, and the cooling channels are arranged in a serpentine pattern within the cavities of the fixed mold and the moving mold.

[0007] Preferably, the disassembly and fixing mechanism includes: fastening bolts, with fastening bolts inserted into the upper and lower ends of both the front and rear sides of the fixed mold and the moving mold; threaded holes are provided at the upper and lower ends of both the front and rear sides of the first mold body and the second mold body, and the fastening bolts are threaded into the threaded holes; and inserts, with inserts fixedly provided at both the front and rear ends of one side of the second mold body, and slots are provided at both the front and rear ends of one side of the first mold body, with the slots corresponding to the inserts on the left and right.

[0008] Preferably, a cavity is formed on one side of the first mold body, and a common injection hole is formed on one side of both the second mold body and the moving mold.

[0009] Preferably, the outer sides of the first mold body and the second mold body have a plurality of arc-shaped through grooves from front to back, and the first mold body and the second mold body are adapted to contact the inner cavities of the fixed mold and the moving mold through the inner cavities of the arc-shaped through grooves.

[0010] Preferably, the ejection mechanism includes: a push block, wherein cylindrical grooves are provided at both ends of one side of the inner cavity of the fixed mold, and the push block is inserted into the inner cavity of the cylindrical groove; a gas connector, wherein a gas connector is fixedly provided at both ends of the other side of the fixed mold, and one end of the gas connector communicates with the inner cavity of the cylindrical groove; a gas supply pipe, connected to one end of the gas connector; a connecting rod, fixedly provided on one side of the push block; and a top post, screwed to one end of the connecting rod, and the top post is inserted into the inner cavity of the first mold body, and one end of the top post is located on the same plane as one side of the inner cavity of the mold cavity.

[0011] Preferably, a top block is fixedly provided at one end of the outer wall of the connecting rod, and the top block is in contact with one side of the top column.

[0012] Preferably, the top block is located between the push block and the first mold body.

[0013] The heat sink die-casting mold proposed in this invention has the following advantages: 1. Dual Positioning Design Ensures Precise Alignment: The mold features a dual positioning structure with both limiting posts and limiting grooves, as well as inserts and slots. The limiting posts at the four corners of the moving mold mate with the corresponding limiting grooves of the fixed mold, achieving macroscopically precise alignment between the fixed and moving molds. The inserts of the second mold body fit into the slots of the first mold body, further ensuring microscopically precise closure between the first and second mold bodies. This dual positioning synergistic effect effectively avoids the misalignment problem that easily occurs with traditional single positioning, significantly reducing the incidence of defects such as flash and dimensional deviations in die castings, and significantly improving product quality. The dual positioning ensures precise fit between the first and second mold bodies, forming a sealed cavity space. Simultaneously, the second mold body and the moving mold have interconnected injection holes, ensuring that the molten metal smoothly fills the cavity, avoiding molding defects caused by injection deviation or poor cavity sealing, and further ensuring the structural accuracy and appearance quality of the heat sink die casting.

[0014] 2. Serpentine Cooling Channels Enhance Heat Exchange: The serpentine cooling channels in the cavities of the fixed and moving molds significantly increase the contact area between the coolant and the mold compared to traditional straight channels, improving heat exchange efficiency. After injection molding, the coolant can quickly remove heat from the cavity, accelerating the solidification and setting of the die-cast parts, effectively shortening the production cycle of a single product and improving batch production efficiency. Several arc-shaped grooves are opened on the outer sides of the first and second mold bodies, allowing the mold bodies to fully adapt to the cavities of the fixed and moving molds. Heat can be quickly conducted to the cooling channels through the arc-shaped grooves, further enhancing the heat dissipation effect and avoiding stress concentration inside the die-cast parts caused by uneven heat dissipation of the mold bodies, thus improving the mechanical properties of the product.

[0015] 3. Modular mold design enables partial replacement: The first mold body and the fixed mold, as well as the second mold body and the moving mold, all adopt a detachable connection structure with "adaptive plug-in and fastening bolts". When the mold body wears out due to long-term use, there is no need to replace the entire mold. Only by loosening the fastening bolts can the first mold body or the second mold body be disassembled separately for repair or replacement, which greatly reduces mold maintenance costs and reduces resource waste. The ejector pin and connecting rod in the ejection mechanism are connected by screws, and the ejection mechanism can push the first mold body to detach from the fixed mold. When the ejector pin (the core vulnerable component of the mold) wears out, there is no need to disassemble the main body of the ejection mechanism. Only by taking out the first mold body and rotating the ejector pin can the ejector pin be quickly disassembled and replaced. After maintenance, the mold body can be re-plugged and fixed to restore production, which significantly shortens maintenance time and improves equipment uptime.

[0016] 4. Pneumatic Ejection for Smooth Demolding: The ejection mechanism is pneumatically driven. Externally controlled gas enters the cylindrical groove through a gas supply pipe and connector, pushing the push block, connecting rod, and ejector pin to move synchronously, smoothly ejecting the die-casting part from the cavity. Compared to traditional mechanical ejection, pneumatic ejection provides more uniform force, avoiding deformation or damage to the die-casting part caused by uneven ejection force, and ensuring the stability of the demolding process. An ejector block is installed on the outer wall of the connecting rod. After the die-casting part is ejected, the push block can continue to push the ejector block to contact the first mold body, pushing the first mold body out of the fixed mold as a whole. This facilitates subsequent removal of the die-casting part and provides convenient operating space for mold body or ejector pin maintenance, further optimizing the continuity and convenience of the production process.

[0017] In summary, by setting up dual molds and disassembly mechanisms, precise docking between mold bodies is achieved, ensuring the cavity closure accuracy. Through the dual positioning design, the occurrence rate of defects such as flash and dimensional deviations in die castings is significantly reduced, and the product qualification rate is greatly improved. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the exploded structure of the present invention; Figure 3 This is a front sectional view of the mold of the present invention; Figure 4 For the present invention Figure 3 Enlarged view of point A in the image; Figure 5 This is a front sectional view of the moving mold of the present invention; Figure 6 This is a diagram showing the position of the top column in this invention; Figure 7 This is a schematic diagram of the first model of the present invention; Figure 8 This is a dynamic model illustration of the present invention.

[0019] Explanation of reference numerals in the attached drawings: 1. Fixed mold; 2. Moving mold; 3. Limiting post; 4. Limiting groove; 5. Mounting bracket; 6. First mold body; 7. Second mold body; 8. Disassembly and fixing mechanism; 81. Fastening bolt; 82. Screw hole; 83. Insert post; 84. Slot; 9. Ejection mechanism; 91. Push block; 92. Cylindrical groove; 93. Gas connector; 94. Gas supply pipe; 95. Connecting rod; 96. Ejector post; 97. Ejector block; 10. Cooling channel; 11. Cavity; 12. Injection hole; 13. Arc-shaped through groove. Detailed Implementation

[0020] 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.

[0021] Please see Figures 1-8 The present invention provides a technical solution: a heat sink die casting mold, comprising: a fixed mold 1, a moving mold 2, a limiting post 3, a limiting groove 4, a mounting frame 5, a first mold body 6, a second mold body 7, a disassembly mechanism 8, and an ejection mechanism 9; Limiting posts 3 are provided at the four corners of one side of the moving mold 2, and limiting grooves 4 are provided at the four corners of one side of the fixed mold 1. The positions of the limiting grooves 4 and the limiting posts 3 correspond. When the moving mold 2 and the fixed mold 1 are closed, the limiting posts 3 are inserted into the limiting grooves 4. The mounting bracket 5 is fixedly set on the other side of the fixed mold 1. The first mold body 6 is adapted to be inserted into one side of the fixed mold 1, and the second mold body 7 is adapted to be inserted into one side of the moving mold 2. The disassembly and fixing mechanism 8 is set on the outside of the fixed mold 1 and the moving mold 2, and the ejection mechanism 9 is set in the inner cavity of the fixed mold 1.

[0022] As a preferred embodiment, the inner cavities of the fixed mold 1 and the moving mold 2 are provided with cooling channels 10, and the cooling channels 10 are arranged in a serpentine pattern in the inner cavities of the fixed mold 1 and the moving mold 2. The coolant delivery pipe is connected to the cooling channels 10, and the first mold body 6 and the second mold body 7 are cooled through the cooling channels 10.

[0023] As a preferred embodiment, the disassembly and fixing mechanism 8 further includes: a fastening bolt 81, a screw hole 82, a pin 83, and a slot 84; In order to fix the first mold 6 and the second mold 7, fastening bolts 81 are inserted into the upper and lower ends of the front and rear sides of the fixed mold 1 and the moving mold 2. Screw holes 82 are opened at the upper and lower ends of the front and rear sides of the first mold 6 and the second mold 7, and the fastening bolts 81 are screwed into the screw holes 82. Insert pins 83 are fixedly installed at the front and rear ends of one side of the second mold 7. Slots 84 are opened at the front and rear ends of one side of the first mold 6, and the slots 84 are arranged in a left-right correspondence with the insert pins 83. The first mold 6 and the second mold 7 can be precisely fitted by the cooperation of the insert pins 83 and the slots 84. The second mold 7 can be easily removed from the moving mold 2 by the second insert pin 83.

[0024] When the mold starts the mold closing procedure, the moving mold 2 moves towards the fixed mold 1. At this time, the second mold body 7 moves synchronously with the moving mold 2. The insert pins 83 on the second mold body 7 first contact the slots 84 of the first mold body 6 and are inserted into the slots along the guide of the slots 84. Through the cooperation of the insert pins 83 and the slots 84, the first mold body 6 and the second mold body 7 are initially and accurately positioned to avoid mold body misalignment. At the same time, the limiting pins 3 at the four corners of the moving mold 2 are inserted into the limiting slots 4 of the fixed mold 1 to further assist in positioning. Finally, the fixed mold 1 and the moving mold 2, and the first mold body 6 and the second mold body 7 are accurately closed, ensuring the closing accuracy of the cavity 11 and reducing defects such as flash and dimensional deviations in the die casting. During this process, the fastening bolts 81 always keep the first mold body 6 and the fixed mold 1, and the second mold body 7 and the moving mold 2 firmly fixed to prevent the mold body from shifting under the action of mold closing pressure and ensure the overall stability of the mold structure.

[0025] When disassembling for maintenance, if it is necessary to maintain or replace the first mold body 6 or the second mold body 7 (such as mold body wear, cavity 11 repair), or if the top pillar 96 needs to be replaced, first stop the mold operation and separate the moving mold 2 from the fixed mold 1 to the maximum distance. For disassembling the first mold body 6: use a wrench to loosen the fastening bolts 81 at the top and bottom ends of the front and rear sides of the fixed mold 1 until the fastening bolts 81 are completely disengaged from the screw holes 82 of the first mold body 6. Then the first mold body 6 can be removed from one side of the fixed mold 1 for subsequent maintenance or replacement operations. After maintenance, reinsert the first mold body 6 into the fixed mold 1, align the screw holes 82 with the bolt through holes, screw in the fastening bolts 81 and tighten them. For disassembling the second mold body 7: Similarly, loosen the fastening bolts 81 on the moving mold 2. After the bolts are removed, the second mold body 7 can be smoothly removed from one side of the moving mold 2 by holding or using a tool to clamp the insert post 83 on the second mold body 7. During installation, first mate the second mold body 7 with the moving mold 2, and then fix it with the fastening bolts 81 to ensure that the insert post 83 is in the correct position so that it can cooperate with the slot 84 of the first mold body 6 when the mold is closed later.

[0026] As a preferred option, the first mold body 6 has a cavity 11 on one side, and the second mold body 7 and the moving mold 2 both have a common injection hole 12 on one side, in order to enable precise injection molding.

[0027] In order to effectively exchange heat between the first mold body 6 and the second mold body 7, there are several arc-shaped through grooves 13 on the outer side of the first mold body 6 and the second mold body 7 from front to back, and the first mold body 6 and the second mold body 7 are adapted to contact the inner cavity of the fixed mold 1 and the moving mold 2 through the inner cavity of the arc-shaped through grooves 13.

[0028] As a preferred embodiment, the ejection mechanism 9 further includes: a push block 91, a cylindrical groove 92, a gas connector 93, a gas delivery pipe 94, a connecting rod 95, a top column 96, and a top block 97. To facilitate the ejection of the die-cast part and the first mold body 6, cylindrical grooves 92 are provided at both the front and rear ends of one side of the inner cavity of the fixed mold 1. Push blocks 91 are inserted into the inner cavity of the cylindrical grooves 92. Gas connectors 93 are fixedly provided at both the front and rear ends of the other side of the fixed mold 1, and one end of the gas connectors 93 communicates with the inner cavity of the cylindrical grooves 92. The gas supply pipe 94 is connected to one end of the gas connectors 93, and external control gas is connected to the gas supply pipe 94. Gas is input into the cylindrical grooves 92 through the gas supply pipe 94 and the gas connectors 93 to push the push blocks 91 to one side. The connecting rod 95 is fixedly provided on one side of the push blocks 91. The top post 96 is screwed to one end of the connecting rod 95 and is inserted into the inner cavity of the first mold body 6. One end of the top post 96 is located on the same plane as one side of the inner cavity of the cavity 11. Under the push of the push blocks 91, the connecting rod 95 and the top post 96, the top post 96 ejects the die-cast part.

[0029] As a preferred embodiment, a top block 97 is fixedly provided at one end of the outer wall of the connecting rod 95, and the top block 97 contacts one side of the top post 96. Under the continuous pushing of the push block 91 and the connecting rod 95, the first mold body 6 is pushed out of one side of the fixed mold 1 so that the first mold body 6 can be taken out. After the first mold body 6 is taken out, the top post 96 can be replaced.

[0030] As a preferred embodiment, the top block 97 is further positioned between the push block 91 and the first mold body 6, so that the top block 97 can push out the first mold body 6.

[0031] After the heat sink die-casting is solidified and molded in the cavity 11, the external gas control device is activated, and gas at a set pressure is supplied to the gas connector 93 through the gas supply pipe 94. The gas enters the inner cavity of the cylindrical groove 92 through the gas connector 93, generating a horizontal thrust on the push block 91. Under the action of the gas thrust, the push block 91 slides along the cylindrical groove 92 towards the first mold body 6. The push block 91 simultaneously drives the connecting rod 95 to move, and the connecting rod 95 in turn pushes the ejector pin 96 to extend towards the cavity 11. Since one end of the ejector pin 96 is initially on the same plane as one side of the inner cavity of the cavity 11, as the ejector pin 96 extends, one end will contact the side of the die-casting and apply a uniform thrust, smoothly ejecting the die-casting from the cavity 11 until the die-casting is completely removed from the cavity 11, completing the demolding operation.

[0032] If maintenance or replacement of the worn ejector pin 96 is required during the disassembly process of the first mold body 6, after the die-casting part is ejected, gas continues to be supplied to the cylindrical groove 92 through the gas supply pipe 94, causing the pusher block 91 to continuously drive the connecting rod 95 and the ejector block 97 to move towards the first mold body 6. When the ejector block 97 contacts the side of the first mold body 6, the pushing force of the pusher block 91 is transmitted to the first mold body 6 through the ejector block 97. As the pushing force continues to be applied, the first mold body 6 gradually detaches from one side of the fixed mold 1 until the first mold body 6 is completely detached from the fixed mold 1, at which point the operator can directly remove the first mold body 6. If the ejector pin 96 needs to be replaced, simply rotate the ejector pin 96 after the first mold body 6 is removed to separate its threaded connection with the connecting rod 95, replace it with a new ejector pin 96, and then reinsert the first mold body 6 into the fixed mold 1 to complete the replacement of the ejector pin 96 and mold reset.

[0033] Its detailed connection method is a well-known technology in this field. The following mainly introduces the working principle and process, and the specific work is as follows.

[0034] Step 1: Start the mold closing mechanism. The moving mold 2 moves towards the fixed mold 1. At this time, the limiting pins 3 at the four corners of the moving mold 2 are precisely inserted into the corresponding limiting grooves 4 of the fixed mold. At the same time, the insert pins 83 on the second mold body 7 are inserted into the slots 84 of the first mold body 6. Through the dual positioning of the limiting pins 3 and the limiting grooves 4, and the insert pins 83 and the slots 84, the fixed mold 1 and the moving mold 2, and the first mold body 6 and the second mold body 7 are precisely closed, ensuring that the cavity 11 forms a sealed molding space. Step 2: After the mold is closed, the external die-casting machine injects molten metal into the cavity 11 of the first mold 6 through the injection hole 13 on the moving mold 2 and the second mold body 7. The coaxial design of the injection hole 13 ensures that the molten metal can fill the cavity smoothly and avoids molding defects caused by injection deviation. After the molten metal fills the cavity 11, the die-casting pressure is maintained for a set time to allow the molten metal to initially solidify and form in the cavity 11. Step 3: After injection molding is completed, connect the external coolant supply pipe to the cooling channel 10 of the mold. The coolant circulates in the cavity of the fixed mold 1 and the moving mold 2 along the serpentine distribution of the cooling channel 10. The first mold body 61 and the second mold body 7 are in full contact with the inner cavity of the mold through the outer arc groove 13, which quickly conducts the heat of the molten metal in the cavity 11 to the cooling channel 10. The heat is carried away by the heat exchange of the circulating coolant. After the temperature of the die casting drops to the set value and it is completely solidified and molded, the coolant supply is turned off. Step 4: After the die-cast part is shaped, start the ejection system. Connect the external control gas to the gas connector 93 on the fixed mold through the gas supply pipe. The gas enters the inner cavity of the cylindrical groove 92 through the gas connector 93, pushing the push block 91 in the cylindrical groove 92 to move closer to the first mold body 6. The push block 91 drives the connecting rod 95 to move synchronously. The ejector pin 96 at one end of the connecting rod 95 extends towards the cavity 11, ejecting the die-cast part from the cavity 11 until it is detached from the cavity 11. When it is necessary to replace or maintain the first mold body 61, the second mold body 62, or the ejector pin 96, loosen the fastening bolts 8 on the fixed mold 1 and the moving mold 2. 1. The first mold body 61 and the second mold body 62 can be removed from the fixed mold 1 and the moving mold 2 respectively. When the push block 91 moves continuously, the top block 97 on the connecting rod 95 contacts the first mold body 61 and applies a pushing force to push the first mold body 61 out from the side of the fixed mold 1. By pulling the insert 83, the second mold body 62 can be pulled out from the side of the moving mold 2. The workers can easily take out the die-casting parts. If the top column 96 needs to be replaced, the top column 96 can be directly rotated to separate the top column 96 from the connecting rod 95, and the disassembly and replacement can be completed. After maintenance, the mold body is re-inserted and fixed, and the next round of production can begin.

[0035] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A heat sink die-casting mold, characterized in that, include: Fixed mold (1) and moving mold (2); limiting posts (3), with limiting posts (3) provided at the four corners of one side of the moving mold (2) and limiting grooves (4) provided at the four corners of one side of the fixed mold (1), and the limiting grooves (4) corresponding to the positions of the limiting posts (3); mounting bracket (5), fixedly set on the other side of the fixed mold (1); first mold body (6), adapted to be inserted into one side of the fixed mold (1); second mold body (7), adapted to be inserted into one side of the moving mold (2); disassembly and fixing mechanism (8), set on the outside of the fixed mold (1) and the moving mold (2); ejection mechanism (9), set in the inner cavity of the fixed mold (1).

2. The heat sink die-casting mold according to claim 1, characterized in that: The fixed mold (1) and the moving mold (2) are provided with cooling channels (10), and the cooling channels (10) are arranged in a serpentine pattern in the inner cavity of the fixed mold (1) and the moving mold (2).

3. The heat sink die-casting mold according to claim 1, characterized in that: The disassembly and fixing mechanism (8) includes: fastening bolts (81), fastening bolts (81) are inserted into the upper and lower ends of the front and rear sides of the fixed mold (1) and the moving mold (2), and screw holes (82) are opened at the upper and lower ends of the front and rear sides of the first mold body (6) and the second mold body (7), and the fastening bolts (81) are screwed into the screw holes (82); inserts (83), inserts (83) are fixedly provided at the front and rear ends of one side of the second mold body (7), and slots (84) are opened at the front and rear ends of one side of the first mold body (6), and the slots (84) are correspondingly arranged with the inserts (83) on the left and right.

4. The heat sink die-casting mold according to claim 3, characterized in that: The first mold body (6) has a cavity (11) on one side, and the second mold body (7) and the moving mold (2) both have a communicating injection hole (12) on one side.

5. A heat sink die-casting mold according to claim 4, characterized in that: The first mold (6) and the second mold (7) have several arc-shaped through grooves (13) from front to back on their outer sides, and the first mold (6) and the second mold (7) are adapted to contact the inner cavities of the fixed mold (1) and the moving mold (2) through the inner cavities of the arc-shaped through grooves (13).

6. The heat sink die-casting mold according to claim 1, characterized in that: The ejection mechanism (9) includes: a push block (91), with cylindrical grooves (92) provided at both ends of one side of the inner cavity of the fixed mold (1), and the push block (91) is inserted into the inner cavity of the cylindrical groove (92); a gas connector (93), with a gas connector (93) fixedly provided at both ends of the other side of the fixed mold (1), and one end of the gas connector (93) communicating with the inner cavity of the cylindrical groove (92); a gas pipe (94), connected to one end of the gas connector (93); a connecting rod (95), fixedly provided on one side of the push block (91); and a top post (96), screwed to one end of the connecting rod (95), and the top post (96) is inserted into the inner cavity of the first mold body (6), and one end of the top post (96) is located on the same plane as one side of the inner cavity of the cavity (11).

7. A heat sink die-casting mold according to claim 6, characterized in that: A top block (97) is fixedly provided at one end of the outer wall of the connecting rod (95), and the top block (97) is in contact with one side of the top column (96).

8. A heat sink die-casting mold according to claim 7, characterized in that: The top block (97) is located between the push block (91) and the first mold (6).

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