A die-casting mold for aluminum shells
By using a multi-cavity design and a pin-type die-casting mold, the problems of low efficiency and difficult maintenance of existing molds have been solved, achieving efficient multi-aluminum shell molding and low-cost maintenance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DONGGUAN KSY ELECTRONICS MATERIALS CO LTD
- Filing Date
- 2025-07-28
- Publication Date
- 2026-07-17
AI Technical Summary
Existing die-casting molds can only form one aluminum shell at a time, resulting in low processing efficiency; the small holes on the aluminum shell are easily damaged, making maintenance difficult and costly.
The design incorporates a multi-cavity die-casting mold, including a front mold, a rear mold, a front mold core, a rear mold core, pins, an injection mechanism, and an ejection mechanism. This allows for the simultaneous forming of multiple aluminum shells, with small holes formed via pins. The pins can be replaced independently, reducing maintenance difficulty and costs.
It improved processing efficiency, reduced maintenance difficulty and costs, and enhanced market competitiveness.
Smart Images
Figure CN224508430U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of die casting mold design, and in particular to a die casting mold for an aluminum shell. Background Technology
[0002] Die casting molds are essential in die casting processes. A die casting mold is a tool used to inject liquid metal into a mold cavity under high pressure, allowing it to solidify and form the desired parts or products.
[0003] Some metal aluminum shells can be obtained through die casting. However, in actual die casting, it has been found that many die casting molds now only have one cavity, meaning that only one aluminum shell can be formed in one production run, resulting in low processing efficiency.
[0004] In addition, some aluminum shells are often provided with holes to facilitate installation. In die casting molds, these holes are usually formed by directly setting protrusions in the mold cavity. However, these holes are numerous, small in diameter, and deep, making it difficult to set the protrusions. Furthermore, due to size limitations, the protrusions are prone to bending or even breaking after multiple die castings due to stress and other issues. The maintenance of the protrusions is also very difficult. After the protrusions are damaged, the entire mold cavity often needs to be replaced, resulting in high costs and weak market competitiveness. Utility Model Content
[0005] The purpose of this invention is to provide a die-casting mold for aluminum shells that can solve one or more of the above-mentioned problems.
[0006] According to one aspect of this utility model, a die-casting mold for aluminum shells is provided, comprising a front mold, a rear mold, a front mold core, a rear mold core, a pin, an injection mechanism, and an ejection mechanism.
[0007] The front mold core is mounted on the front mold, and the rear mold core is mounted on the rear mold. The front mold core has multiple upper cavities, and the rear mold core has multiple lower cavities. The front mold and the rear mold can abut against each other, and the front mold core and the rear mold core can also abut against each other, so that the multiple upper cavities and the multiple lower cavities correspond one-to-one to form multiple cavities.
[0008] One end of the pin is embedded in the front mold core, and the other end can abut against the lower cavity.
[0009] The injection mechanism is mounted on the rear mold. The injection mechanism has a main runner, and the rear mold core has a branch runner in the middle. The branch runner is connected to multiple sub-runners. The main runner and the branch runners are connected and communicate with each other. The multiple sub-runners are connected and communicate with multiple lower cavities one by one.
[0010] The ejection mechanism is connected to the rear mold.
[0011] The beneficial effects of this utility model are as follows: In this utility model, each cavity can be independently formed to produce an aluminum shell, thereby producing multiple aluminum shells in one processing, improving processing efficiency. Furthermore, by setting pins, it is easy to form small-sized deep holes on the aluminum shell. Compared with traditional protrusion hole forming, its processing and setting difficulty is low. Moreover, even if the pins are damaged due to pressure, the pins can be directly replaced without replacing the entire front mold core, reducing maintenance difficulty and maintenance costs, and making it highly competitive in the market.
[0012] In some embodiments, the rear mold core is provided with slag-filling holes, and each lower cavity is connected to and communicates with multiple slag-filling holes. By providing slag-filling holes, it is convenient to overfill the cavity, and excess material can flow into the slag-filling holes to ensure that the cavity is fully filled as much as possible, thus ensuring the integrity of the finished aluminum shell.
[0013] In some embodiments, the height of the slag pocket orifice is higher than the height of the lower cavity. This ensures that residual material flows into the slag pocket orifice only after the cavity is filled.
[0014] In some embodiments, the rear mold core has multiple recesses, and the front mold core has multiple protrusions. When the front and rear mold cores abut, the protrusions are fitted one-to-one into the multiple recesses. The cooperation between the protrusions and recesses when the front and rear mold cores abut ensures the accuracy of the connection position between the front and rear mold cores, thereby ensuring that the cavity can be effectively formed.
[0015] In some embodiments, the injection mechanism includes a sprue bushing and a guide block. The sprue bushing is embedded in the front mold, and the guide block is mounted on the rear mold. The sprue bushing can abut against the guide block. The sprue bushing has a feed channel, and the main runner is located on the guide block. The feed channel can be connected to and communicate with the main runner. The guide block facilitates the setting of the main runner shape to adapt to different injection needs.
[0016] In some embodiments, the ejection mechanism includes an ejector pin, an upper ejector plate, a lower ejector plate, and a guide post. The upper and lower ejector plates are connected. One end of the ejector pin is embedded in the upper ejector plate, and the other end of the ejector pin passes through the rear mold and extends into the rear mold core. The guide post is connected to the rear mold. Both the upper and lower ejector plates are slidably mounted on the guide post. The upper and lower ejector plates can move along the guide post to move the ejector pin, thereby facilitating the ejection action when needed.
[0017] In some embodiments, the ejection mechanism includes a base plate and a connecting block. One end of the connecting block is connected to the rear mold, and the other end of the connecting block is connected to the base plate. The connecting block has a receiving space within it, and the upper and lower ejector plates are disposed within the receiving space. The receiving space can limit the movement of the upper and lower ejector plates to reduce the movement offset between them.
[0018] In some embodiments, the present invention further includes a connecting rod and a sleeve block, one end of the connecting rod being embedded in the front mold and the sleeve block being embedded in the rear mold, the connecting rod being slidably inserted into the sleeve block. The connecting rod and sleeve block can guide and limit the movement between the front mold and the rear mold, reducing the movement offset that occurs when the two move relative to each other. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the structure of a die-casting mold for an aluminum shell according to one embodiment of the present invention.
[0020] Figure 2 This is a cross-sectional view of a die-casting mold for an aluminum shell, representing one embodiment of the present invention.
[0021] Figure 3 This is an exploded view of the structure of a die-casting mold for an aluminum shell according to one embodiment of the present invention.
[0022] Figure 4 This is a schematic diagram of the front mold core of an aluminum shell die-casting mold according to one embodiment of the present invention.
[0023] Figure 5 This is a schematic diagram of the rear mold core of an aluminum shell die-casting mold according to one embodiment of the present invention.
[0024] Figure 6 This is a schematic diagram of the structure of an aluminum shell that can be die-cast using a die-casting mold according to one embodiment of the present invention.
[0025] In the diagram: 1. Front mold, 2. Rear mold, 3. Front mold core, 4. Rear mold core, 5. Insert pin, 6. Injection mechanism, 7. Ejection mechanism, 8. Connecting rod, 31. Thrust, 41. Recess, 42. Runner, 43. Branch runner, 301. Upper cavity, 401. Lower cavity, 402. Slag trap hole, 61. Sprue bushing, 62. Guide block, 611. Feed channel, 621. Main runner, 71. Ejector pin, 72. Upper ejector plate, 73. Lower ejector plate, 74. Guide pillar, 75. Base plate, 76. Connecting block, 10. Aluminum shell, 101. Hole. Detailed Implementation
[0026] The present invention will now be described in further detail with reference to the accompanying drawings.
[0027] refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 This utility model discloses a die-casting mold for an aluminum shell. In this embodiment, the aluminum shell is the front cover of a surveillance camera. The die-casting mold of this utility model includes a front mold 1, a rear mold 2, a front mold core 3, a rear mold core 4, a pin 5, an injection mechanism 6, and an ejection mechanism 7.
[0028] The die-casting mold for this aluminum shell also includes connecting rods 8 and sleeve blocks. Preferably, there are four connecting rods 8 and four sleeve blocks. The four sleeve blocks are fixedly embedded at the four corners of the rear mold 2, and one end of each of the four connecting rods 8 is fixedly embedded in the front mold 1. The four connecting rods 8 are slidably inserted into the four sleeve blocks one by one, so that the front mold 1 and the rear mold 2 are connected and can move relative to each other.
[0029] The relative movement of the front mold 1 and the rear mold 2 can cause the front mold 1 and the rear mold 2 to come into contact, which is the mold closing state, or it can cause the front mold 1 and the rear mold 2 to separate, which is the mold opening state.
[0030] The front mold core 3 is fixedly mounted on the front mold 1 by bolts, and the rear mold core 4 is fixedly mounted on the rear mold 2 by bolts, so that the front mold core 3 can move with the front mold 1 and the rear mold core 4 can move with the rear mold 2.
[0031] When the front mold 1 and the rear mold 2 abut or separate through relative movement, the front mold core 3 and the rear mold core 4 can also abut or separate in the same way.
[0032] The rear mold core 4 is provided with multiple recesses 41 at the edge of the top surface, and the front mold core 3 is provided with multiple protrusions 31 at the bottom surface. In this embodiment, the recesses 41 and protrusions 31 are preferably four in each case. When the front mold core 3 and the rear mold core 4 abut against each other, the four protrusions 31 can be embedded in the four recesses 41 one by one.
[0033] The bottom of the front mold core 3 is provided with multiple upper cavities 301, and the top of the rear mold core 4 is provided with multiple lower cavities 401. In this embodiment, the upper cavities 301 and the lower cavities 401 are preferably six in each case. The six upper cavities 301 and the six lower cavities 401 are arranged in a one-to-one correspondence. After the front mold core 3 and the rear mold core 4 abut each other, the six upper cavities 301 and the six lower cavities 401 can form six cavities in a one-to-one correspondence. The shape of the cavity can match the shape of the aluminum shell 10 to be formed.
[0034] One end of the pin 5 is fixedly embedded in the front mold core 3. After the front mold core 3 and the rear mold core 4 abut against each other, the other end of the pin 5 can extend into the lower cavity 401 and abut against the lower cavity 401. In this embodiment, it is preferred that four pins 5 can be inserted into each lower cavity 401, so as to correspond to the four holes 101 formed on each formed aluminum shell 10.
[0035] The rear mold core 4 is also provided with slag-filling holes 402. Each lower mold cavity 401 can be connected and communicated with multiple slag-filling holes 402. In this embodiment, it is preferable that each lower mold cavity 401 can be connected and communicated with three slag-filling holes 402. After the front mold core 3 and the rear mold core 4 abut against each other, the slag-filling holes 402 can be closed by the front mold core 3.
[0036] The height of the slag bag hole 402 after setting is higher than the height of the lower cavity 401.
[0037] The injection mechanism 6 includes a sprue bushing 61 and a guide block 62. The sprue bushing 61 is fixedly embedded in the front mold 1, and the guide block 62 is fixedly installed on the rear mold 2 by screws. After the front mold 1 and the rear mold 2 abut together, the sprue bushing 61 and the guide block 62 can also abut together. The sprue bushing 61 has a feed channel 611 at its center, and the guide block 62 has a main channel 621 on one side. After the sprue bushing 61 and the guide block 66 abut together, the feed channel 611 can be connected to the main channel 621.
[0038] The rear mold core 4 is also provided with a branch channel 42 in the middle. The branch channel 42 is connected to and communicates with the main channel 621. The rear mold core 4 is also provided with a branch channel 43. The number of branch channels 43 is equivalent to the number of lower cavities 401. Preferably, there are six branch channels 43. The branch channel 42 is connected to and communicates with the six branch channels 43. The six branch channels 43 are connected to and communicate with the six lower cavities 401 in a one-to-one correspondence.
[0039] The ejection mechanism 7 includes ejector pins 71, an upper ejector plate 72, a lower ejector plate 73, and guide pillars 74. There can be multiple ejector pins 71. The upper ejector plate 72 and the lower ejector plate 73 are fixedly connected by screws and are stacked on top of each other. One end of all ejector pins 71 is fixedly embedded in the upper ejector plate 72, and the bottom end of the ejector pin 71 abuts against the top surface of the lower ejector plate 73. The other end of the ejector pin 71 can pass through the rear mold 2 and extend into the rear mold core 4. As the upper ejector plate 72 and the lower ejector plate 73 move, one end of the ejector pin 71 can also pass out from the rear mold core 4. The ejector pins 71 can be distributed in multiple positions, and can be located below structures such as the lower cavity 401, the runner 42, the branch runner 43, and the slag packing hole 402.
[0040] The top of the guide post 74 is fixedly connected to the bottom of the rear mold 2 by screws, and the upper ejector plate 72 and the lower ejector plate 73 can be slidably sleeved on the guide post 74, so that the upper ejector plate 72 and the lower ejector plate 73 can move along the guide post 74.
[0041] The ejection mechanism 7 also includes a base plate 75 and a connecting block 76. Preferably, there are two connecting blocks 76. One end of the connecting block 76 is fixedly connected to the bottom of the rear mold 2 by screws, and the other end of the connecting block 76 is connected to the base plate 75. The connecting block 76 has an accommodating space, and the upper ejector plate 72 and the lower ejector plate 73 are both located in the accommodating space.
[0042] When using the die-casting mold for this aluminum shell, the mold is first closed, so that the front mold 1 and the rear mold 2 abut together. At this time, the front mold core 3 and the rear mold core 4 will abut together, and the upper cavity 301 and the lower cavity 401 can form a cavity. At the same time, each pin 5 can abut against the lower cavity 401.
[0043] Then, molten material is injected into the feed channel 611. The material can enter the main channel 621 through the feed channel 611, and then flow into the branch channel 42 through the main channel 621. The injection needs to be excessive, so that the material in the branch channel 42 can flow into each cavity through each branch channel 43 to fill the cavity. After the cavity is filled, the excess material can flow into the slag bag hole 402.
[0044] When the molten material cools and solidifies, the required aluminum shell 10 can be formed in the cavity, and the pin 5 can form a hole 101 on the aluminum shell 10.
[0045] When the mold is opened, the front mold 1 and the rear mold 2 are separated. At this time, the front mold core 3 and the rear mold core 4 can also be separated, and the ejector pin 5 can leave the lower cavity 401. After the mold is opened, the upper ejector plate 72 and the lower ejector plate 73 are moved. The upper ejector plate 72 and the lower ejector plate 73 can move along the guide post 74, and the ejector pin 71 can move accordingly. The ejector pin 71 can eject the structure formed on the lower cavity 401, the runner 42, the branch runner 43 and the slag bag hole 402 from the mold. Afterwards, the user can obtain the aluminum shell 10 by cutting the obtained structure.
[0046] In addition, even if the insert pin 5 is damaged due to pressure or prolonged use, the insert pin 5 can be replaced directly without replacing the entire front mold core 3, which reduces maintenance difficulty and cost and makes it highly competitive in the market.
[0047] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and all such modifications and improvements fall within the protection scope of this utility model.
Claims
1. An aluminum shell die-casting mold characterized by comprising: This includes the front mold, rear mold, front mold core, rear mold core, insert pins, injection mechanism, and ejection mechanism. The front mold core is mounted on the front mold, and the rear mold core is mounted on the rear mold. The front mold core has multiple upper cavities, and the rear mold core has multiple lower cavities. The front mold and the rear mold can abut against each other, and the front mold core and the rear mold core can also abut against each other, so that the multiple upper cavities and the multiple lower cavities correspond one-to-one to form multiple cavities. One end of the pin is embedded in the front mold core, and the other end can abut against the lower cavity. The injection mechanism is mounted on the rear mold. The injection mechanism has a main runner, and the rear mold core has a branch runner in the middle. The branch runner is connected to multiple sub-runners. The main runner and the branch runners are connected and communicate with each other. The multiple sub-runners are connected and communicate with multiple lower cavities one by one. The ejection mechanism is connected to the rear mold.
2. An aluminum shell die-casting mold according to claim 1, wherein The rear mold core is provided with slag-filling holes, and each of the lower cavities is connected to and communicates with multiple slag-filling holes.
3. An aluminum shell die-casting mold according to claim 2, wherein The height of the slag bag hole is higher than the height of the lower cavity.
4. The die casting mold for an aluminum shell according to claim 1, wherein The rear mold core has multiple recesses, and the front mold core has multiple protrusions. When the front mold core and the rear mold core abut against each other, the multiple protrusions are embedded in the multiple recesses one by one.
5. The die casting mold for an aluminum housing according to claim 1, wherein The injection mechanism includes a sprue sleeve and a guide block. The sprue sleeve is embedded in the front mold, and the guide block is installed on the rear mold. The sprue sleeve can abut against the guide block. The sprue sleeve is provided with a feed channel, and the main flow channel is provided on the guide block. The feed channel can be connected and communicated with the main flow channel.
6. The die casting mold for an aluminum housing according to claim 1, wherein The ejection mechanism includes an ejector pin, an upper ejector plate, a lower ejector plate, and a guide post. The upper ejector plate and the lower ejector plate are connected. One end of the ejector pin is embedded in the upper ejector plate, and the other end of the ejector pin passes through the rear mold and extends into the rear mold core. The guide post is connected to the rear mold, and both the upper ejector plate and the lower ejector plate can be slidably mounted on the guide post.
7. An aluminum shell die-casting mold according to claim 6, wherein The ejection mechanism includes a base plate and a connecting block. One end of the connecting block is connected to the rear mold, and the other end of the connecting block is connected to the base plate. The connecting block has an accommodating space, and the upper and lower top plates are located within the accommodating space.
8. The die casting mold for an aluminum housing according to claim 1, wherein It includes a connecting rod and a sleeve block. One end of the connecting rod is embedded in the front mold, and the sleeve block is embedded in the rear mold. The connecting rod can slide into the sleeve block.