A pin form of the fixed mold ejection structure

Abstract

The utility model relates to a kind of fixed mould ejection structure of pin form, including fixed mould seat, fixed mould core and movable mould core, the fixed mould core and movable mould core are arranged in up-down stacking, and form mould cavity between two, the mould cavity outside of movable mould core is provided with several slag ladle structures, the slag ladle structure is communicated with mould cavity by flow channel groove, so that the residue in product and slag ladle structure in mould cavity form a whole, the fixed mould core is provided with and the ejection pin of slag ladle structure one-to-one correspondence, the ejection pin is in vertical state, lower end and slag ladle structure are top, the fixed mould core is embedded and installed in fixed mould seat lower side, the fixed mould core is installed with several and the spring structure corresponding with ejection pin, the lower side and spring structure upper end of fixed mould seat upper end surface is installed with the pressing plate of top, the utility model has the characteristics such as convenient product rapid disengagement, guarantee product quality, improve production efficiency, structure general-purpose etc.

Description

Technical Field

[0001] This utility model relates to the field of die casting mold demolding technology, and in particular to a pin-shaped mold ejection structure. Background Technology

[0002] In conventional die-casting mold production, ejector plates are usually used to eject the product, thus completing the demolding process. However, when the product structure is too complex, the clamping force between the product and the fixed mold core is too large. When the mold opens, the fixed mold core may pull the product open with it, which can damage the product. At the same time, if an additional fixed mold ejection structure is added, ejector pin holes may be generated on the product surface, affecting the product quality. To solve the above problems, a new ejection structure needs to be designed. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide a pin-shaped mold ejection structure, which has the characteristics of facilitating quick product ejection, ensuring product quality, improving production efficiency, and having strong structural versatility.

[0004] The technical solution adopted by this utility model to solve its technical problem is as follows: a pin-shaped fixed mold ejection structure is provided, including a fixed mold base, a fixed mold core, and a moving mold core. The fixed mold core and the moving mold core are stacked vertically to form a mold cavity. Several slag-packing structures are provided on the outer side of the mold cavity of the moving mold core. The slag-packing structures are connected to the mold cavity through flow channels, so that the product in the mold cavity and the residue in the slag-packing structures form a whole. The fixed mold core is provided with ejection pins corresponding to the slag-packing structures. The ejection pins are in a vertical state, and their lower ends abut against the slag-packing structures. The fixed mold core is embedded in the lower side of the fixed mold base. Several spring structures corresponding to the ejection pins are installed in the fixed mold core. A pressure plate with its lower side abutting against the upper end of the spring structure is installed on the upper surface of the fixed mold base.

[0005] In this technical solution, the slag bag structure and the mold cavity are connected to form a whole, so that when the slag bag and the fixed mold core are ejected, the product can also be separated from the mold cavity, thereby completing the ejection action. At the same time, the ejection pin is arranged on the upper side of the slag bag structure, so that the ejection mark formed during ejection is always on the slag bag, ensuring that no ejection mark appears on the product surface, greatly improving product quality. By installing a spring structure, the ejection force of the ejection pin is provided, so that when the mold is opened, the ejection pin can eject the slag bag together. At the same time, a pressure plate is set to facilitate assembly.

[0006] As a supplement to this technical solution, when the fixed mold core and the moving mold core are fully closed, the upper end of the ejector pin and the lower side of the pressure plate squeeze the spring structure, causing the spring structure to be in a compressed state.

[0007] When the mold closes, the spring structure is in a compressed state. When the mold opens, the spring structure provides an ejection force, which allows the lower end of the ejector pin to abut against the slag bag. At the same time, multiple ejection forces can eject the product from the fixed mold core.

[0008] As a supplement to this technical solution, the upper end of the ejector pin is provided with a ring of outwardly protruding limiting caps, and the fixed mold core is provided with a limiting hole with a diameter larger than that of the limiting caps. When the fixed mold core and the moving mold core are fully closed, a gap is formed between the lower side of the limiting caps and the bottom of the limiting hole.

[0009] The design of the limiting cap facilitates the installation of the ejector pin, while the clearance controls the extension of the lower end of the ejector pin, making it easier for workers to calculate the mold opening distance and enabling faster mold opening.

[0010] As a supplement to this technical solution, a downwardly extending limiting post is installed on the lower end face of the pressure plate, and the spring structure is sleeved on the limiting post. The limiting post is used to facilitate the installation of the spring structure.

[0011] As a supplement to this technical solution, when the fixed mold core and the moving mold core are fully closed, the lower end of the limiting post and the upper end of the ejector pin abut against each other.

[0012] As a supplement to this technical solution, the pressure plate is in the form of a long strip, a ring, or a curved arc.

[0013] In this technical solution, the form of the pressure plate is not important. The main function of the pressure plate is to form a base to support the spring structure. Therefore, the pressure plate can be changed according to the arrangement of the slag bag structure.

[0014] Beneficial effects: This utility model relates to a pin-type fixed mold ejection structure. By connecting the slag bag structure and the mold cavity to form a whole, the product can be separated from the mold cavity along with the slag bag and the fixed mold core when ejecting, thus completing the ejection action. At the same time, the ejection pin is arranged on the upper side of the slag bag structure, so that the ejection mark formed during ejection is always on the slag bag, ensuring that no ejection mark appears on the product surface, greatly improving product quality. By installing a spring structure to provide ejection force to the ejection pin, the ejection pin can eject the slag bag along with the mold when it opens. At the same time, a pressure plate is set to facilitate assembly. It has the characteristics of convenient and quick product ejection, ensuring product quality, improving production efficiency, and strong structural versatility. Attached Figure Description

[0015] Figure 1 This is a structural view of the present invention;

[0016] Figure 2 This is a top view of the present invention;

[0017] Figure 3 This is the front view of this utility model;

[0018] Figure 4 This is a utility model Figure 2 Sectional view along the A-A direction;

[0019] Figure 5 This is a utility model Figure 2 Sectional view along the B-B direction;

[0020] Figure 6 This is a utility model Figure 5 Enlarged view of a portion of point A in the middle.

[0021] Diagram: 1. Fixed mold base, 2. Fixed mold core, 3. Moving mold core, 4. Slag bag structure, 5. Pressure plate, 6. Spring structure, 7. Ejector pin, 8. Limiting post, 9. Clearance, 10. Limiting cap. Detailed Implementation

[0022] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims.

[0023] The embodiments of this utility model relate to a pin-type mold ejection structure, such as... Figure 1 — Figure 6 As shown, the mold includes a fixed mold base 1, a fixed mold core 2, and a moving mold core 3. The fixed mold core 2 and the moving mold core 3 are stacked vertically to form a mold cavity. Several slag-filled structures 4 are provided on the outer side of the mold cavity of the moving mold core 3. The slag-filled structures 4 are connected to the mold cavity through flow channels, so that the product in the mold cavity and the residue in the slag-filled structures 4 form a whole. The fixed mold core 2 is provided with ejector pins 7 corresponding to the slag-filled structures 4. The ejector pins 7 are vertical and their lower ends abut against the slag-filled structures 4. The fixed mold core 2 is embedded in the lower side of the fixed mold base 1. Several spring structures 6 corresponding to the ejector pins 7 are installed in the fixed mold core 2. A pressure plate 5 is installed on the upper surface of the fixed mold base 1, and its lower side abuts against the upper end of the spring structures 6.

[0024] In this technical solution, the slag bag structure 4 and the mold cavity are connected to form a whole, so that when the slag bag and the fixed mold core 2 are ejected, the product can be separated from the mold cavity along with it, thereby completing the ejection action. At the same time, the ejection pin 7 is arranged on the upper side of the slag bag structure 4, so that the ejection mark formed during ejection is always on the slag bag, ensuring that no ejection mark appears on the product surface, greatly improving product quality. By installing a spring structure 6, the ejection force of the ejection pin 7 is provided, so that when the mold is opened, the ejection pin 7 can eject the slag bag along with it. At the same time, a pressure plate is set to facilitate assembly.

[0025] As a supplement to this technical solution, when the fixed mold core 2 and the moving mold core 3 are fully closed, the upper end of the ejector pin 7 and the lower side of the pressure plate 5 squeeze the spring structure 6, so that the spring structure 6 is in a compressed state.

[0026] When the mold closes, the spring structure 6 is in a compressed state. When the mold opens, the spring structure 6 provides an ejection force, which allows the lower end of the ejector pin 7 to abut against the slag bag. At the same time, multiple ejection forces can eject the product from the fixed mold core 2.

[0027] As a supplement to this technical solution, the upper end of the ejector pin 7 is provided with a ring of outwardly protruding limiting caps 10, and the fixed mold core 2 is provided with a limiting hole with a diameter larger than that of the limiting caps 10. When the fixed mold core 2 and the moving mold core 3 are fully closed, a gap 9 is formed between the lower side of the limiting caps 10 and the bottom of the limiting hole.

[0028] The limit cap 10 is designed to facilitate the installation of the ejector pin 7, while the gap 9 is used to control the extension of the lower end of the ejector pin 7, thereby making it easier for workers to calculate the mold opening distance and enabling the mold opening to be faster.

[0029] As a supplement to this technical solution, a downwardly extending limiting post 8 is installed on the lower end surface of the pressure plate 5, and the spring structure 6 is sleeved on the limiting post 8. The limiting post 8 is provided to facilitate the installation of the spring structure 6.

[0030] As a supplement to this technical solution, when the fixed mold core 2 and the moving mold core 3 are fully closed, the lower end of the limiting post 8 and the upper end of the ejector pin 7 abut against each other.

[0031] As a supplement to this technical solution, the pressure plate 5 is in the form of a long strip, a ring, or a curved arc.

[0032] In this technical solution, the form of the pressure plate 5 is not important. The main function of the pressure plate 5 is to form a base to support the spring structure 6. Therefore, the pressure plate 5 can be changed according to the arrangement of the slag bag structure 4.

[0033] Example

[0034] When implementing this technical solution in real time, it is not necessary to modify the mold as a whole. It is only necessary to drill several pin mounting holes on the fixed mold core 2 that correspond one-to-one with the slag bag structure 4. After that, holes are drilled on the fixed mold base 1 to arrange the spring mounting holes. After that, the ejector pins 7 are installed on the pin mounting holes. Then, the fixed mold core 2 and the fixed mold base 1 are assembled, and the spring structure 6 is installed into the spring mounting holes. Finally, the pressure plate 5 is installed on the upper side of the fixed mold base 1. The modification cost is low and it can be applied to different die casting molds.

Claims

1. A pin-type fixed mold ejection structure, comprising a fixed mold base (1), a fixed mold core (2), and a moving mold core (3), wherein the fixed mold core (2) and the moving mold core (3) are stacked vertically to form a mold cavity, and a plurality of slag-encasing structures (4) are provided on the outer side of the mold cavity of the moving mold core (3), characterized in that: The slag bag structure (4) is connected to the mold cavity through the flow channel, so that the product in the mold cavity and the residue in the slag bag structure (4) form a whole. The fixed mold core (2) is provided with ejector pins (7) that correspond one-to-one with the slag bag structure (4). The ejector pins (7) are in a vertical state, with their lower ends abutting against the slag bag structure (4). The fixed mold core (2) is embedded in the lower side of the fixed mold base (1). Several spring structures (6) corresponding to the ejector pins (7) are installed in the fixed mold core (2). A pressure plate (5) with its lower side abutting against the upper end of the spring structure (6) is installed on the upper surface of the fixed mold base (1).

2. The pin-type fixed mold ejection structure according to claim 1, characterized in that: When the fixed mold core (2) and the moving mold core (3) are fully closed, the upper end of the ejector pin (7) and the lower side of the pressure plate (5) squeeze the spring structure (6), causing the spring structure (6) to be in a compressed state.

3. The pin-type fixed mold ejection structure according to claim 1, characterized in that: The upper end of the ejector pin (7) is provided with a ring of outward protruding limiting caps (10), and the fixed mold core (2) is provided with a limiting hole with a diameter larger than that of the limiting caps (10). When the fixed mold core (2) and the moving mold core (3) are fully closed, a gap (9) is formed between the lower side of the limiting caps (10) and the bottom of the limiting hole.

4. The pin-type fixed mold ejection structure according to claim 1, characterized in that: The pressure plate (5) has a downwardly extending limiting post (8) installed on its lower end surface, and the spring structure (6) is sleeved on the limiting post (8).

5. The pin-type fixed mold ejection structure according to claim 4, characterized in that: When the fixed mold core (2) and the moving mold core (3) are fully closed, the lower end of the limiting post (8) and the upper end of the ejector pin (7) abut against each other.

6. The pin-type fixed mold ejection structure according to claim 1, characterized in that: The pressure plate (5) is in the shape of a long strip, a ring, or a curved arc.

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