Aluminum die casting mold with independent extrusion pin

Abstract

The utility model belongs to extrusion pin technical field, concretely relates to a kind of aluminium die casting die with independent extrusion pin, comprising: workpiece, the both sides of workpiece are respectively provided with mould one and mould two, one side of mould two is provided with stripper plate, one side of stripper plate is provided with sealing plate, the inside of stripper plate is provided with multiple extrusion pins, and one end of extrusion pin extends to the inside of sealing plate and is connected with rotating shaft;The middle position in the inside of stripper plate is fixedly connected with middle plate, the position of extrusion pin close to middle plate is fixedly connected with threaded ring, and threaded ring is threadedly connected with middle plate.The utility model can be realized, extrusion pin can be replaced by free disassembly, the use of extrusion pin is more flexible, not only design cost can be saved, but also production cost can be reduced to realize the reuse of extrusion pin.

Description

Technical Field

[0001] This utility model belongs to the field of extrusion pin technology, specifically relating to an aluminum die-casting mold with an independent extrusion pin. Background Technology

[0002] The extrusion pin is a key component in aluminum die-casting molds, primarily used to help eject aluminum alloy castings from the mold and prevent them from sticking to the mold after cooling. Extrusion pins are typically made of wear-resistant materials, possessing high temperature and pressure resistance. Their design position and dimensions directly affect the demolding effect of the aluminum alloy casting and the service life of the mold. Extrusion pins play a crucial role in the aluminum die-casting process, ensuring the integrity of the aluminum parts and the smooth operation of the mold, and are widely used in the production of precision aluminum products in the automotive, electronics, and other industries.

[0003] Problems with existing technology: Independent extrusion pins can be freely adjusted in length as needed. By adjusting the length of the extrusion pins during demolding, the order in which the extrusion pins push the workpiece can be controlled, thereby changing the local stress on the workpiece and reducing the force exerted by the extrusion pins on the weaker parts of the workpiece, thus increasing the pass rate. However, the existing extrusion pin structures are relatively complex and are mostly for special use, lacking flexibility and replaceability. Utility Model Content

[0004] The purpose of this invention is to provide an aluminum die-casting mold with an independent extrusion pin, which allows for free disassembly and replacement of the extrusion pin, making its use more flexible. This not only saves design costs but also reduces manufacturing costs and enables the extrusion pin to be reused.

[0005] The specific technical solution adopted by this utility model is as follows: An aluminum die-casting mold with independent extrusion pins includes: a workpiece, a mold first and a mold second are respectively provided on both sides of the workpiece, a demolding plate is provided on one side of the mold second, a sealing plate is provided on one side of the demolding plate, a plurality of extrusion pins are provided inside the demolding plate, one end of the extrusion pin extends into the interior of the sealing plate and is connected to a rotating shaft, a middle plate is fixedly connected to the middle position inside the demolding plate, and a threaded ring is fixedly connected to the extrusion pin near the middle plate, the threaded ring being threadedly connected to the middle plate.

[0006] The end of the rotating shaft extends into the interior of the demolding template and is fixedly connected to a transmission sleeve. The end of the extrusion pin near the transmission sleeve is fixedly connected to a transmission polygonal block, and the transmission sleeve is fitted on the outside of the transmission polygonal block.

[0007] The transmission sleeve is rotatably connected to an anti-rotation mounting post on the side near the rotating shaft. The anti-rotation mounting post is embedded inside the template and can be detachably installed therewith.

[0008] A sliding ring is fitted on the outer side of the rotating shaft near the anti-rotation mounting post. A sliding groove is provided on the rotating shaft near the sliding ring. A protrusion is fixedly connected to the sliding ring near the sliding groove. The protrusion is slidably installed with the sliding groove.

[0009] A movable toothed ring is fixedly connected to the end of the sliding ring near the transmission sleeve, and a fixed toothed ring is fixedly connected to the anti-rotation mounting post near the movable toothed ring. The movable toothed ring and the fixed toothed ring are plugged into each other.

[0010] A limit spring is provided near the inside of the sliding ring on the rotating shaft. One end of the limit spring is fixedly connected to the movable toothed ring, and the other end of the limit spring is fixedly connected to the outer wall of the rotating shaft.

[0011] Multiple anti-rotation teeth are fixedly connected to the outer side of the anti-rotation mounting column, and the multiple anti-rotation teeth are arranged in a ring array.

[0012] A limiting ball is provided near the detachment template of the anti-rotation mounting column, and the limiting ball is located on the side of the anti-rotation mounting column surface near the inside of the detachment template.

[0013] The number of the limiting balls is multiple, and the multiple limiting balls are arranged in a circular array.

[0014] The anti-rotation mounting post has a movable groove near the limiting ball, and the limiting ball is slidably installed inside the movable groove.

[0015] The technical effects achieved by this utility model are as follows: This invention allows for the free disassembly and replacement of the extrusion pin, making its use more flexible. This not only saves design costs but also reduces manufacturing costs, enabling the extrusion pin to be reused.

[0016] In this invention, the sliding installation of the protrusion and the groove can synchronously bind the sliding ring and the rotating shaft, that is, when the fixed toothed ring and the movable toothed ring are inserted, the rotating shaft cannot rotate, which has a limiting effect and prevents the threaded ring from rotating under pressure. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the appearance structure of this utility model; Figure 2 This is a schematic diagram of the template release structure in this utility model; Figure 3 This is a schematic diagram of the rotating shaft in this utility model; Figure 4 This is a schematic diagram of the internal structure of the template in this utility model; Figure 5 This is a schematic diagram of the anti-rotation mounting column in this utility model; Figure 6This is a schematic diagram of the transmission polygonal block in this utility model; Figure 7 This is a structural cross-sectional view of the anti-rotation mounting column in this utility model; Figure 8 This is a cross-sectional view of the limiting ball in this utility model.

[0018] The attached diagram lists the components represented by each number as follows: 1. Workpiece; 2. Mold 1; 3. Mold 2; 4. Demolding plate; 5. Extrusion pin; 401. Sealing plate; 402. Middle plate; 501. Rotating shaft; 502. Transmission sleeve; 503. Anti-rotation mounting post; 504. Transmission polygonal block; 505. Sliding ring; 506. Movable toothed ring; 507. Limiting ball; 508. Fixed toothed ring; 509. Limiting spring. Detailed Implementation

[0019] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0020] like Figure 1 - Figure 6 As shown, an aluminum die-casting mold with independent extrusion pins includes: a workpiece 1, with a mold 1 2 and a mold 2 3 respectively arranged on both sides of the workpiece 1, a demolding plate 4 arranged on one side of the mold 2 3, a sealing plate 401 arranged on one side of the demolding plate 4, a plurality of extrusion pins 5 arranged inside the demolding plate 4, one end of the extrusion pin 5 extending into the interior of the sealing plate 401 and connected to a rotating shaft 501, a middle plate 402 fixedly connected to the middle position inside the demolding plate 4, a threaded ring fixedly connected to the position of the extrusion pin 5 near the middle plate 402, and the threaded ring being threadedly connected to the middle plate 402; the end of the rotating shaft 501 extending into the interior of the demolding plate 4 and fixedly connected to a transmission sleeve 502, a transmission polygonal block 504 fixedly connected to the end of the extrusion pin 5 near the transmission sleeve 502, and the transmission sleeve 502 being sleeved on the outside of the transmission polygonal block 504.

[0021] During die casting, mold 1 2 and mold 2 3 are interlocked. The die casting tube presses the molten metal into the gap between mold 1 2 and mold 2 3, and waits for the molten metal to cool and solidify to form workpiece 1. Then mold 1 2 and mold 2 3 are separated. The ejector plate 4 approaches mold 2 3 and pushes out the workpiece 1 inside it through the extrusion pin 5. When pushing out, because the structure of workpiece 1 is complex, the more fragile parts cannot be pushed out with too much force. Therefore, it is necessary to push out the strong parts first and then push out the softer parts to reduce the pushing force on the fragile parts. The extension length of the extrusion pin 5 can be changed by rotating the rotating shaft 501, controlling the forward and backward sequence of pushing, thereby changing the thrust on the vulnerable part. In use, since the threaded ring on the outside of the extrusion pin 5 is threadedly connected to the middle plate 402, rotating the rotating shaft 501 drives the transmission sleeve 502 to rotate. Since the transmission sleeve 502 and the transmission polygonal block 504 are polygonal and are sleeved on the outside of the transmission polygonal block 504, rotating the transmission sleeve 502 can drive the transmission polygonal block 504 to rotate, causing the transmission polygonal block 504 to slide inside the transmission sleeve 502. The transmission polygonal block 504 then drives the extrusion pin 5 to rotate. The extension amount of the extrusion pin 5 is changed through the threaded connection between the threaded ring and the middle plate 402.

[0022] See attached document Figure 6 - Figure 7 A transmission sleeve 502 is rotatably connected to an anti-rotation mounting post 503 on the side near the rotating shaft 501. The anti-rotation mounting post 503 is embedded inside the release template 4 and is detachably installed therewith. A sliding ring 505 is sleeved on the outer side of the rotating shaft 501 near the anti-rotation mounting post 503. A groove is formed on the rotating shaft 501 near the sliding ring 505. A protrusion is fixedly connected to the sliding ring 505 near the groove, and the protrusion is slidably installed with the groove. A movable toothed ring 5 is fixedly connected to the end of the sliding ring 505 near the transmission sleeve 502. 06. A fixed toothed ring 508 is fixedly connected to the anti-rotation mounting post 503 near the movable toothed ring 506, and the movable toothed ring 506 and the fixed toothed ring 508 are plugged into each other; a limit spring 509 is provided on the rotating shaft 501 near the inside of the sliding ring 505, one end of the limit spring 509 is fixedly connected to the movable toothed ring 506, and the other end of the limit spring 509 is fixedly connected to the outer wall of the rotating shaft 501; multiple anti-rotation teeth are fixedly connected to the outer side of the anti-rotation mounting post 503, and the multiple anti-rotation teeth are arranged in a ring array.

[0023] According to the above structure, since the extrusion pin 5 and the rotating shaft 501 are detachably installed with the demolding template 4, when using it, you only need to design the mold first, then reserve the demolding hole according to the shape of the mold, drill the corresponding fixing hole on the demolding template 4 according to the position of the demolding hole, and then install the extrusion pin 5 inside the fixing hole. The length of the extrusion pin 5 can be selected, thereby reducing the production cost. When installing the extrusion pin 5, first insert the extrusion pin 5 into the inside of the release plate 4, so that the threaded ring is partially threaded to the middle plate 402. Then insert the anti-rotation mounting post 503, the rotating shaft 501, and the transmission sleeve 502 into the inside of the fixing hole. The transmission sleeve 502 is inserted into the outside of the transmission polygon block 504. When it is necessary to adjust the extension length of the extrusion pin 5, the sliding ring 505 is slid by the handle fixedly installed on the outside of the rotating shaft 501 and the sliding ring 505. At this time, the limit spring 509 is compressed, so that the movable toothed ring 506 and the fixed toothed ring 508 are separated. Then the rotating shaft 501 can be rotated to drive the transmission sleeve 502 to rotate. Both the movable toothed ring 506 and the fixed toothed ring 508 are fixedly connected with teeth, and the two are connected by insertion at the teeth. The transmission polygonal block 504 has a cross groove at its end, which can be rotated with a screwdriver to make the threaded ring threadedly connected to the middle plate 402. The sliding installation of the protrusion and the groove can synchronize the rotation of the sliding ring 505 and the rotating shaft 501. That is, when the fixed toothed ring 508 and the movable toothed ring 506 are inserted, the rotating shaft 501 cannot rotate, which has the effect of limiting the threaded ring to prevent it from rotating under pressure. Multiple anti-rotation teeth can prevent the anti-rotation mounting post 503 from rotating.

[0024] See attached document Figure 8 A limiting ball 507 is provided on the anti-rotation mounting column 503 near the demolding template 4. The limiting ball 507 is located on the side of the surface of the anti-rotation mounting column 503 near the inside of the demolding template 4. There are multiple limiting balls 507 arranged in a circular array. A moving groove is provided on the anti-rotation mounting column 503 near the limiting ball 507, and the limiting ball 507 is slidably installed inside the moving groove.

[0025] According to the above structure, when the anti-rotation mounting post 503 is connected to the release plate 4, a limiting ball 507 is required. When the limiting ball 507 slides to the end of the moving groove, a part will protrude. When installing the anti-rotation mounting post 503, the movable toothed ring 506 and the fixed toothed ring 508 are separated first. Since the lower part of the limiting ball 507 is no longer supported by the movable toothed ring 506, the protruding part of the limiting ball 507 on the outside of the anti-rotation mounting post 503 enters the moving groove. At this time, the anti-rotation mounting post 503 can be inserted into the middle plate 402. After the anti-rotation mounting post 503 is inserted into the middle plate 402, the movable toothed ring 506 is reset under the action of the spring, pushing the limiting ball 507 to move to the other end of the moving groove. The protruding limiting ball 507 limits the anti-rotation mounting post 503.

[0026] The working principle of this utility model is as follows: When installing the extrusion pin 5, first insert the extrusion pin 5 into the inside of the release plate 4, so that the threaded ring is partially threaded to the middle plate 402. Then, insert the anti-rotation mounting post 503, the rotating shaft 501, and the transmission sleeve 502 into the inside of the fixing hole. The transmission sleeve 502 is sleeved on the outside of the transmission polygonal block 504. The movable toothed ring 506 is limited and fixed by the limiting ball 507. When it is necessary to adjust the extension length of the extrusion pin 5, the sliding ring 505 is slid by the handle fixedly installed on the outside of the rotating shaft 501 and the sliding ring 505. At this time, the limiting spring 509 is compressed, so that the movable toothed ring 506 is separated from the fixed toothed ring 508. Then the rotating shaft 501 can be rotated to drive the transmission sleeve 502 to rotate.

[0027] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. An aluminum die-casting mold with an independent extrusion pin, comprising a workpiece (1), wherein a first mold (2) and a second mold (3) are respectively provided on both sides of the workpiece (1), and a release mold (4) is provided on one side of the second mold (3), characterized in that: A sealing plate (401) is provided on one side of the demolding template (4), and a plurality of extrusion pins (5) are provided inside the demolding template (4). One end of the extrusion pin (5) extends into the interior of the sealing plate (401) and is connected to a rotating shaft (501). A middle plate (402) is fixedly connected to the middle position inside the template (4), and a threaded ring is fixedly connected to the extrusion pin (5) near the middle plate (402). The threaded ring is threadedly connected to the middle plate (402).

2. The aluminum die-casting mold according to claim 1, characterized in that: The end of the rotating shaft (501) extends into the interior of the demolding template (4) and is fixedly connected to the transmission sleeve (502). The end of the extrusion pin (5) near the transmission sleeve (502) is fixedly connected to the transmission polygonal block (504). The transmission sleeve (502) is sleeved on the outside of the transmission polygonal block (504).

3. The aluminum die-casting mold according to claim 2, characterized in that: The transmission sleeve (502) is rotatably connected to an anti-rotation mounting post (503) on the side near the rotating shaft (501). The anti-rotation mounting post (503) is embedded inside the release template (4) and is detachably installed therewith.

4. The aluminum die-casting mold according to claim 3, characterized in that: A sliding ring (505) is sleeved on the outer side of the rotating shaft (501) near the anti-rotation mounting column (503). A groove is provided on the rotating shaft (501) near the sliding ring (505). A protrusion is fixedly connected to the sliding ring (505) near the groove. The protrusion is slidably installed with the groove.

5. The aluminum die-casting mold according to claim 4, characterized in that: The sliding ring (505) is fixedly connected to a movable toothed ring (506) at the end near the transmission sleeve (502), and the anti-rotation mounting post (503) is fixedly connected to a fixed toothed ring (508) at the position near the movable toothed ring (506). The movable toothed ring (506) and the fixed toothed ring (508) are plugged into each other.

6. The aluminum die-casting mold according to claim 1, characterized in that: A limiting spring (509) is provided at a position near the inside of the sliding ring (505) on the rotating shaft (501). One end of the limiting spring (509) is fixedly connected to the movable toothed ring (506), and the other end of the limiting spring (509) is fixedly connected to the outer wall of the rotating shaft (501).

7. The aluminum die-casting mold according to claim 3, characterized in that: The outer side of the anti-rotation mounting post (503) is fixedly connected with multiple anti-rotation teeth, and the multiple anti-rotation teeth are arranged in a ring array.

8. The aluminum die-casting mold according to claim 3, characterized in that: A limiting ball (507) is provided near the stripping template (4) on the anti-rotation mounting column (503). The limiting ball (507) is located on the side of the surface of the anti-rotation mounting column (503) near the inside of the stripping template (4).

9. The aluminum die-casting mold according to claim 8, characterized in that: The number of the limiting balls (507) is multiple, and the multiple limiting balls (507) are arranged in a ring array.

10. The aluminum die-casting mold according to claim 7, characterized in that: The anti-rotation mounting post (503) has a movable groove near the limiting ball (507), and the limiting ball (507) is slidably installed inside the movable groove.

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