Die casting mold core

Abstract

The utility model relates to die core technology field especially a die casting die core, including die core, the inner wall outside processing of die core has the curved inner diameter, the upper inner wall processing of die core has the cavity, and the cavity is linked with the vertical center channel of die core, the upper end right side fixed communication of die core has the water injection opening, the upper end left side fixed communication of die core has the drain. Through the cooperation between water injection opening, drain, curved inner diameter, cavity, heat insulating layer, because through the curved inner diameter water through the die core center vertical channel drainage mode, the water inlet and drainage are separated into two areas, and heat is blocked through the heat insulating layer simultaneously, so that the high-temperature liquid during drainage does not transmit heat to the low-temperature liquid just injected, effectively avoid only setting up the cooling water circulation structure in the inside of die, leading to only can make the metal of die casting gradually cool from outside to inside, the process is more slow problem.

Description

Technical Field

[0001] This utility model relates to the field of mold core technology, specifically a die-casting mold core. Background Technology

[0002] Die casting molds are tools used to cast metal parts. Existing die casting molds generally include a mold frame and a mold core (also called a mold core). The mold frame and mold core are equipped with an integrated mandrel. The conical core at the center of the end face of the mandrel is used to create the cavity inside the die casting. For example, the core structure of a die casting mold for large thin-walled parts with application number "202323470489.2" includes a mold frame of the die casting mold, a mold core fixed to the mold frame, and an insertion hole formed inside the mold frame.

[0003] However, although it can eliminate the setting of step fillets and stress concentration, when waiting for cooling and forming, it usually means that a cooling water circulation structure is set inside the mold. The mold core itself does not have cooling capacity, which means that the die-cast metal can only be cooled gradually from the outside to the inside, and the process is relatively slow. Utility Model Content

[0004] The purpose of this invention is to solve the problem that the device only has a cooling water circulation structure inside the mold, which results in the die-cast metal being cooled gradually from the outside to the inside, and the process is relatively slow. Therefore, a die-casting mold core is proposed.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] Design a die-casting mold core, including a mold core, the outer side of the inner wall of the mold core is machined with a curved inner diameter, the upper inner wall of the mold core is machined with a cavity, and the cavity is connected to the vertical central channel of the mold core, the upper right side of the mold core is fixedly connected with a water inlet, and the upper left side of the mold core is fixedly connected with a drain outlet.

[0007] Preferably, a column is fixedly connected to the upper center of the mold core, and a top plate is fixedly connected to the upper end of the column.

[0008] Preferably, the outer inner wall of the top plate is machined with multiple threaded holes.

[0009] Preferably, flanges are fixed to the outer ends of both the water inlet and the drain outlet.

[0010] Preferably, the inner wall of the mold core is machined with a heat insulation layer.

[0011] The die-casting mold core proposed in this utility model has the following advantages:

[0012] By coordinating the water inlet, drain outlet, curved inner diameter, cavity, and insulation layer, cooling water pipes can be connected to the water inlet and drain outlet via flanges. Cooling water is injected through the water inlet, and the curved inner diameter significantly increases the contact area between the cooling water and the mold core, allowing the mold core to better dissipate heat from the outer wall of the die-cast metal part. Simultaneously, after flowing to the lower part of the mold core, the cooling water flows upward from the vertical channel in the center of the mold core, and finally exits through the drain outlet from the cavity. Because the water enters through the curved inner diameter and exits through the vertical channel in the center of the mold core, the water inlet and outlet are separated into two areas. At the same time, the insulation layer provides heat insulation, preventing the hot liquid during drainage from transferring heat to the newly injected low-temperature liquid. This effectively avoids the problem of slow cooling processes caused by having a cooling water circulation structure only inside the mold, which only allows the die-cast metal to cool gradually from the outside in. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the front appearance structure of this utility model;

[0014] Figure 2 This utility model Figure 1 A schematic diagram of a partial cross-sectional structure in the diagram;

[0015] Figure 3 This utility model Figure 2 A schematic diagram of the structure viewed from below in the image;

[0016] Figure 4 This is a front sectional view of the present invention in combination with a die-casting mold.

[0017] Figure 5 This utility model Figure 2 Schematic diagram of the structure at point A in the diagram;

[0018] Figure 6 This utility model Figure 2 The structural diagram at point B in the diagram.

[0019] In the diagram: 1. Mold core, 2. Column, 3. Top plate, 4. Water inlet, 5. Flange, 6. Drain outlet, 7. Cavity, 8. Insulation layer, 9. Bending inner diameter. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings:

[0021] See attached document Figure 1-6In this embodiment, a die-casting mold core includes a mold core 1. The outer side of the inner wall of the mold core 1 is machined with a curved inner diameter 9. A cavity 7 is machined on the upper inner wall of the mold core 1, and the cavity 7 is connected to the vertical central channel of the mold core 1. A water inlet 4 is fixedly connected to the upper right side of the mold core 1, and a drain outlet 6 is fixedly connected to the upper left side of the mold core 1. External cooling water pipes are connected to the water inlet 4 and the drain outlet 6 respectively via flanges. A column 2 is fixedly connected to the upper center of the mold core 1, and a top plate 3 is fixedly connected to the upper end of the column 2. Multiple threaded holes are machined on the outer inner wall of the top plate 3. Flanges 5 are fixedly connected to the outer ends of both the water inlet 4 and the drain outlet 6. A heat insulation layer 8 is machined on the inner side of the inner wall of the mold core 1. The material of the heat insulation layer 8 can be selected according to requirements, and can be materials such as rock wool. Figure 4 As shown, the mold core 1 can be machined in a split manner (in... Figure 4 (A horizontal partition can be clearly seen above). After the upper and lower parts are processed, the heat insulation layer 8 can be inserted into the inner wall of the mold core 1, and then the upper and lower parts are fastened together and fixed and sealed by welding.

[0022] Working principle:

[0023] When this die-casting mold core is needed, the user first installs the mold core 1 under the corresponding platform through the threaded hole at the top plate 3. Then, the two separate die-casting molds on the outer sides are brought together and fixed from both sides towards the center. Molding sand of the corresponding shape can be filled into the inner wall of the die-casting mold to form a mold core 1 as described in this case. Figure 4 As shown, the sealing at the joint is achieved by molding sand on the inner walls of the two-part die-casting mold. Then, molten metal (e.g., molten aluminum) is poured into the gap between the mold core 1 and the opening at the top of the die-casting mold. An external ring is then inserted into the gap between the mold core 1 and the die-casting mold to compress the molten metal, ensuring it fills the gap. The mold core 1 is then allowed to cool and solidify. This is the method of using the mold core 1. The specific mold core 1 can be selected according to different usage requirements. This case only involves the die-casting core of this type of split-type hollow ball head shell, and... Figure 4 As shown, there is a partition between the die-casting mold mating surfaces on both sides of the mold core 1, which separates the metal on both sides for molding. Therefore, after cooling and molding, it is only necessary to pull the die-casting molds on both sides outward to separate them, and then remove the separate metal hollow ball head shells from both sides of the mold core 1.

[0024] During the cooling and molding process, a cooling water circulation structure is typically installed inside the mold. This results in the die-cast metal cooling gradually from the outside in, a relatively slow process. Therefore, this design incorporates a water inlet 4, a drain outlet 6, and a bent inner diameter 9. This allows cooling water pipes to be connected to the water inlet 4 and drain outlet 6 via flanges during cooling. Cooling water is injected through the water inlet 4, and the bent inner diameter 9 significantly increases the contact area between the cooling water and the mold core 1. This allows the mold core 1 to better dissipate heat from the outer wall of the die-cast metal part. Simultaneously, the cooling water... After flowing to the lower part of the mold core 1, it will flow upward from the vertical channel in the center of the mold core 1, and finally be discharged from the cavity 7 through the drain port 6. Because the water enters through the curved inner diameter 9 and drains through the vertical channel in the center of the mold core 1, the water inlet and outlet are separated into two areas. At the same time, the heat insulation layer 8 blocks the heat, so that the hot liquid during drainage will not transfer heat to the newly injected low-temperature liquid. This effectively avoids the problem that only the cooling water circulation structure is set inside the mold, which can only make the die-cast metal cool down gradually from the outside to the inside, and the process is relatively slow.

[0025] Although the present invention has been illustrated and described with reference to preferred embodiments, those skilled in the art should understand that various changes in form and detail are possible within the scope of the claims.

Claims

1. A die-casting mold core, comprising a mold core (1), characterized in that: The inner wall of the mold core (1) is machined with a curved inner diameter (9), the upper inner wall of the mold core (1) is machined with a cavity (7), and the cavity (7) is connected to the vertical central channel of the mold core (1). The upper right side of the mold core (1) is fixedly connected with a water inlet (4), and the upper left side of the mold core (1) is fixedly connected with a drain outlet (6).

2. The die-casting mold core according to claim 1, characterized in that: A column (2) is fixedly connected to the upper center of the mold core (1), and a top plate (3) is fixedly connected to the upper end of the column (2).

3. The die-casting mold core according to claim 2, characterized in that: The outer inner wall of the top plate (3) is machined with multiple threaded holes.

4. The die-casting mold core according to claim 1, characterized in that: Flanges (5) are fixed to the outer ends of the water inlet (4) and the drain outlet (6).

5. The die-casting mold core according to claim 1, characterized in that: The inner wall of the mold core (1) is processed with a heat insulation layer (8).

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