A three-plate die-casting mold

Abstract

The utility model relates to die casting die technical field, concretely relates to a three -plate type die casting die, including first board and second board, the opposite surface of first board and second board is provided with female die and male die respectively, the side away from first board of second board is provided with third board through elastic component, be provided with pull -out piece on the third board, be provided with core -pulling block on pull -out piece, core -pulling block is located in male die, be provided with ejection mechanism on the third board. In the technical scheme provided by the utility model, when opening the mould, first carry out the opening of the mould between third board and second board, and elastic machine component provides the ejection force, promotes second board and male die movement, and pull -out piece moves with core -pulling block, and the movement of unhooking, when second board and male die move to certain distance, complete first opening of the mould, and unhooking is separated, and then second board and third board move together, first board and second board are separated, and complete second opening of the mould.

Description

Technical Field

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

[0002] Die casting molds are tools used to cast metal parts, specifically for completing the die casting process on a specialized die casting and forging machine. The basic die casting process involves molten metal being poured into the mold cavity at low or high speed. The mold has movable cavity surfaces, which are pressurized and forged as the molten metal cools, eliminating shrinkage cavities and porosity defects in the blank and achieving a forged, fragmented grain structure. This significantly improves the overall mechanical properties of the blank.

[0003] In the automotive manufacturing industry, a problem arose in the die-casting mold of irregularly shaped center console screen brackets: the entire edge of the chin structure was undercut, making normal demolding impossible. Traditional two-plate die-casting molds require angled ejectors to form the undercut, but the angled ejector structure is weak, prone to jamming, and requires a large ejection distance and space, which makes it impossible to meet production needs. Utility Model Content

[0004] The purpose of this invention is to solve the problem that traditional two-plate die-casting molds cannot meet production needs, and to provide a three-plate die-casting mold with a stable structure to meet production needs.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows: A three-plate die-casting mold includes a first plate and a second plate. A female mold core and a male mold core are respectively provided on the opposite surfaces of the first plate and the second plate. A third plate is slidably provided on the side of the second plate away from the first plate. The third plate and the second plate are connected by an elastic component. A pull block is provided on the third plate, and a core-pulling block is provided on the pull block. The core-pulling block is located inside the male mold core. When the second plate and the third plate are closed, the core-pulling block is sealed to the undercut position of the male mold core. An ejection mechanism is provided on the third plate to eject the product inside the male mold core.

[0006] Preferably, the pull block is provided with an inclined T-shaped groove, the core-pulling block is inclined and the core-pulling block is slidably disposed in the T-shaped groove.

[0007] Preferably, a limiting rod is provided on the side of the first plate facing the second plate, and the limiting rod is inclined. A slider is slidably provided on the side of the second plate facing the first plate, and the slider is inserted into the limiting rod. When the first plate and the second plate are closed, the slider abuts against the core-pulling block.

[0008] Preferably, the ejection mechanism includes a bottom plate, which is disposed on the side of the third plate away from the second plate. A pin back plate is slidably disposed between the bottom plate and the third plate. A pin plate is disposed between the pin back plate and the third plate. A plurality of pins are disposed on the side of the pin plate facing the third plate, penetrating the third plate and the second plate.

[0009] Preferably, when the end of the ejector pin is flush with the surface of the second plate, the ejector pin back plate is in contact with the bottom plate, and there is a gap between the ejector pin plate and the third plate.

[0010] Preferably, the ejector pin back plate is provided with a plurality of reset rods that penetrate the ejector pin plate, the third plate and the second plate, and the end of the reset rod is provided with a limit block, which is located on the side of the second plate near the first plate.

[0011] Preferably, a pressure spring is wound around the reset rod.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: In the technical solution provided by this utility model, during mold opening, the mold opening between the third plate and the second plate is performed first. The elastic mechanism provides ejection force to push the second plate and the male mold core to move. At the same time, the pull block moves with the core-pulling block to disengage the undercut. When the second plate and the male mold core move to a certain distance, the first mold opening is completed and the undercut is disengaged. After that, the second plate and the third plate move together, and the first plate separates from the second plate to complete the second mold opening. The product is pushed out of the male mold core by the ejection mechanism, and the mold production is completed. Attached Figure Description

[0013] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts. Wherein: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the structure of the first plate of this utility model; Figure 3 This is a schematic diagram of the structure of the second plate of this utility model; Figure 4 This is a schematic diagram of the structure of the third plate of this utility model.

[0014] The diagram is labeled as follows: 1. First plate; 2. Second plate; 3. Third plate; 4. Female mold core; 5. Limiting rod; 6. Male mold core; 7. Core pulling block; 8. Slider; 9. Limiting block; 10. Elastic component; 11. Reset rod; 12. Ejector plate; 13. Ejector back plate; 14. Bottom sealing plate; 15. Pull block. Detailed Implementation

[0015] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0016] like Figure 1 As shown in the figure, a specific embodiment of a three-plate die-casting mold provided by this utility model includes a first plate 1 and a second plate 2. The opposite surfaces of the first plate 1 and the second plate 2 are respectively provided with a female mold core 4 and a male mold core 6. When the mold is closed, the female mold core 4 and the male mold core 6 together form a mold cavity for the injection of magnesium alloy slurry. A mold locking buckle is provided between the first plate 1 and the second plate 2 to ensure the stability of the relative position of the first plate 1 and the second plate 2.

[0017] A third plate 3 is slidably mounted on the side of the second plate 2 away from the first plate 1 via a guide post. The third plate 3 is connected to the second plate 2 via an elastic component 10. The elastic component 10 can consist of a spring and a telescopic rod, or other combinations thereof; no restrictions are placed here. Figure 4 As shown, a pull block 15 is provided on the third plate 3, and an inclined T-shaped groove is provided on the pull block 15. A core-pulling block 7 is slidably arranged in the T-shaped groove. The core-pulling block 7 is inclined and located in the male mold core 6. When the second plate 2 and the third plate 3 are closed, the core-pulling block 7 is sealed to the undercut position of the male mold core 6. When the mold is opened, the elastic component 10 provides an ejection force to push the second plate 2 and the male mold core 6 to move. At the same time, the pull block 15 carries the core-pulling block 7 to move obliquely through the T-groove, thereby disengaging from the undercut. As a preferred solution, an equal-height screw is also provided between the second plate 2 and the third plate 3. When the second plate 2 and the male mold core 6 move to a certain distance, the movement of the second plate 2 stops due to the limiting effect of the equal-height screw.

[0018] like Figure 2 As shown, a limit rod 5 is provided on the side of the first plate 1 facing the second plate 2. The limit rod 5 is inclined, as... Figure 3 As shown, a slider 8 is slidably disposed on the side of the second plate 2 facing the first plate 1. The slider 8 is provided with an inclined insertion hole. The slider 8 is inserted into the limiting rod 5 through the insertion hole. When the first plate 1 and the second plate 2 are closed, the slider 8 abuts against the core-pulling block 7. When the mold is opened, as the first plate 1 and the second plate 2 separate, the slider 8 gradually moves away from the core-pulling block 7 and the male mold core 6, thereby assisting in the release of the undercut. As a preferred solution, a limiting spring is provided at the end of the slider 8 away from the core-pulling block 7 to ensure that the slider 8 does not detach from the device.

[0019] The third plate 3 is equipped with an ejection mechanism, which includes a bottom sealing plate 14, such as... Figure 4 As shown, the bottom plate 14 is located on the side of the third plate 3 away from the second plate 2. A pin back plate 13 is slidably disposed between the bottom plate 14 and the third plate 3. A pin plate 12 is disposed between the pin back plate 13 and the third plate 3. Several pins are disposed on the side of the pin plate 12 facing the third plate 3, penetrating between the third plate 3 and the second plate 2. The product inside the male mold core 6 is ejected by the movement of the pins. When the end of the pin is flush with the surface of the second plate 2, the pin back plate 13 is in contact with the bottom plate 14, leaving no space for the pin to retract. There is a gap between plate 2 and the third plate 3 to allow space for the ejector pin movement and ensure the stability of the ejection operation. The ejector pin back plate 13 is provided with multiple reset rods 11 that pass through the ejector pin plate 12, the third plate 3 and the second plate 2. The end of the reset rod 11 is provided with a limit block 9. The limit block 9 is located on the side of the second plate 2 near the first plate 1, so as to ensure that the ejector pin plate 12 and the ejector pin back plate 13 move together with the second plate 2 when the mold is opened between the second plate 2 and the third plate 3, so as to avoid the ejector pin moving backward and causing damage, and play a role in protecting the ejector pin.

[0020] A pressure spring is wound on the reset rod 11. The pressure spring and the limiting block 9 ensure the stability of the relative position between the ejector pin back plate 13 and the second plate 2 under normal conditions. The distance between the bottom sealing plate 14 and the third plate 3 is greater than the maximum difference in the horizontal height of the core-pulling block 7 moving obliquely. This ensures that there is still space for the ejector pin to move after the second plate 2 and the third plate 3 open the mold, so as to carry out the ejection work. A KO sleeve is provided on the ejector pin back plate 13. A corresponding ejector rod is provided on the machine. The ejector rod moves and pushes the KO sleeve to move, thereby driving the ejector pin back plate 13 to move, and then driving the ejector pin to eject the product. Specifically, the ejector rod can be driven by a cylinder, which is not limited here.

[0021] In use, the mold is first closed so that the first plate 1 and the third plate 3 are tightly attached to the corresponding sides of the second plate 2, and the slurry is injected. Then, the first mold opening is performed. The first plate 1 and the second plate 2 are locked together by the mold locking buckle, and the mold opening between the second plate 2 and the third plate 3 is performed. During the mold opening, the elastic component 10 provides ejection force, pushing the second plate 2 and the male mold core 6 to move. At the same time, the pull block 15 moves at an angle through the T-slot with the core-pulling block 7 to disengage the undercut. When the second plate 2 and the male mold core 6 have moved a certain distance, the movement of the second plate 2 stops due to the limiting effect of the equal height screw, completing the first mold opening and the undercut disengagement is completed. Then, the locking of the first plate 1 and the second plate 2 is released, and the second plate 2 and the third plate 3 move together. The first plate 1 and the second plate 2 separate, completing the second mold opening. The ejector rod moves, driving the ejector pin to push the product in the male mold core 6 out of the mold cavity, and the mold production is completed.

[0022] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A three-plate die-casting mold, characterized in that: The mold includes a first plate (1) and a second plate (2). The opposite surfaces of the first plate (1) and the second plate (2) are respectively provided with a female mold core (4) and a male mold core (6). A third plate (3) is provided on the side of the second plate (2) away from the first plate (1) through an elastic component (10). A pull block (15) is provided on the third plate (3). A core-pulling block (7) is provided on the pull block (15). The core-pulling block (7) is located inside the male mold core (6). When the second plate (2) and the third plate (3) are closed, the core-pulling block (7) is sealed to the undercut position of the male mold core (6). An ejection mechanism is provided on the third plate (3) to eject the product inside the male mold core (6).

2. The three-plate die-casting mold according to claim 1, characterized in that: The pull block (15) is provided with an inclined T-shaped groove, the core-pulling block (7) is inclined and the core-pulling block (7) is slidably disposed in the T-shaped groove.

3. The three-plate die-casting mold according to claim 1, characterized in that: A limiting rod (5) is provided on the side of the first plate (1) facing the second plate (2). The limiting rod (5) is inclined. A slider (8) is slidably provided on the side of the second plate (2) facing the first plate (1). The slider (8) is inserted into the limiting rod (5). When the first plate (1) and the second plate (2) are closed, the slider (8) abuts against the core-pulling block (7).

4. A three-plate die-casting mold according to claim 1, characterized in that: The ejection mechanism includes a bottom plate (14), which is disposed on the side of the third plate (3) away from the second plate (2). A pin back plate (13) is slidably disposed between the bottom plate (14) and the third plate (3). A pin plate (12) is disposed between the pin back plate (13) and the third plate (3). A plurality of pins are disposed on the side of the pin plate (12) facing the third plate (3) that penetrate the third plate (3) and the second plate (2).

5. A three-plate die-casting mold according to claim 4, characterized in that: When the end of the ejector pin is flush with the surface of the second plate (2), the ejector pin back plate (13) is in contact with the bottom plate (14), and there is a gap between the ejector pin plate (12) and the third plate (3).

6. A three-plate die-casting mold according to claim 4, characterized in that: The ejector pin back plate (13) is provided with a plurality of reset rods (11) that penetrate the ejector pin plate (12), the third plate (3) and the second plate (2). The end of the reset rod (11) is provided with a limit block (9), which is located on the side of the second plate (2) near the first plate (1).

7. A three-plate die-casting mold according to claim 6, characterized in that: A pressure spring is wound around the reset rod (11).

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