Demolding assembly for precision mold production

Abstract

The utility model relates to the technical field of forming molds, in particular to a demolding assembly for precise mold production. The mold comprises a lower mold and an upper mold, a mold cavity is formed in the lower mold, a push plate is arranged at the bottom of the mold cavity, a plurality of air cavities are vertically formed in the side wall of the lower mold, exhaust holes communicated with the outside are formed in the bottoms of the air cavities, a plurality of driving rods are movably inserted into the upper mold and the lower mold, and the bottom end of each driving rod is arranged in the corresponding air cavity. The bottom of the driving rod is connected with a piston, the top end of the driving rod is connected with a pushing block, a plurality of air channels are formed in the lower die, the two ends of each air channel are connected to the top of the air cavity and the groove, and a plurality of one-way air inlet valves connected into the air channels are installed on the side of the lower die. According to the demolding assembly, demolding operation is conducted through the push plate and air pressure at the same time, and a pressed object cannot be damaged; the demolding assembly generates high-pressure gas through driving force generated when the upper mold ascends, external gas supply and automatic control are not needed, and the demolding assembly is simple in structure and efficient.

Description

Technical Field

[0001] This utility model relates to the field of molding die technology, and specifically to a demolding component for precision mold production. Background Technology

[0002] In the precision mold production process, the demolding process is a key step to ensure the separation between the mold and the finished workpiece. Traditional demolding methods often rely on physical forces, such as tension or torque, which may damage the mold or workpiece, thereby affecting production efficiency and product quality. Utility Model Content

[0003] The purpose of this invention is to address the deficiencies and shortcomings of existing technologies by providing a reasonably designed demolding component for precision mold production, which can solve the aforementioned defects.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: It includes a lower mold and an upper mold, with several sliding rods installed between the lower mold and the upper mold. The lower mold has a mold cavity with a groove at the bottom, and a push plate that fits the shape of the groove is provided in the groove. Several air chambers are vertically opened in the side wall of the lower mold, and exhaust holes communicating with the outside are opened at the bottom of the air chambers. Several drive rods are movably inserted in the upper mold and the lower mold. The bottom end of each drive rod is located in the air chamber, and a piston is connected to the bottom of the drive rod. A push block is connected to the top of the drive rod. Several air passages are opened in the lower mold. One end of the air passage is connected to the top of the air chamber, and the other end of the air passage is connected to the groove. Several one-way air inlet valves connected to the air passages are installed on the side of the lower mold.

[0005] Preferably, the lower mold has several spring grooves at the bottom of the push plate, and tension springs are installed in the spring grooves. The push plate is installed in the lower mold by several tension springs.

[0006] Preferably, the upper mold has alignment grooves that match the shape of the push block at the position outside the drive rod, and a buffer pad is provided at the bottom of the alignment groove.

[0007] Preferably, the bottom of both sides of the push plate has several inclined grooves.

[0008] Preferably, the air cavity opening is provided with a sealing ring.

[0009] The beneficial effects of this utility model after adopting the above structure are:

[0010] This demolding assembly uses a push plate and air pressure to perform demolding operations simultaneously, which will not damage the pressed object and results in a good finished product.

[0011] This demolding assembly uses the driving force generated when the upper mold rises to produce high-pressure gas, thereby performing the demolding operation. It requires no external gas supply or automated control, and its structure is simple and efficient. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the external structure of this utility model;

[0013] Figure 2 This is a cross-sectional view of the present invention;

[0014] Figure 3 yes Figure 2 Enlarged view of section A;

[0015] Figure 4 This is a side view of the push plate in this utility model.

[0016] Explanation of reference numerals in the attached figures:

[0017] 1. Lower mold; 2. Upper mold; 3. Slide rod; 4. Mold cavity; 5. Air cavity; 6. Drive rod; 7. Piston; 8. Push block; 9. Alignment groove; 10. Air passage; 11. One-way air inlet valve; 12. Push plate; 13. Tension spring; 14. Inclined groove; 15. Exhaust hole. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] See Figures 1-3 As shown, it includes a lower mold 1 and an upper mold 2. Several sliding rods 3 are installed between the lower mold 1 and the upper mold 2. The lower mold 1 has a mold cavity 4. The bottom of the mold cavity 4 has a groove, and a push plate 12 that fits the shape of the groove is provided in the groove. Several air cavities 5 are vertically opened in the side wall of the lower mold 1. The bottom of the air cavity 5 has an exhaust hole 15 that communicates with the outside. Several drive rods 6 are movably inserted in the upper mold 2 and the lower mold 1. The bottom end of each drive rod 6 is located in the air cavity 5, and the bottom of the drive rod 6 is connected to a piston 7. The top end of the drive rod 6 is connected to a push block 8. Several air passages 10 are opened in the lower mold 1. One end of the air passage 10 is connected to the top of the air cavity 5, and the other end of the air passage 10 is connected to the groove. Several one-way air inlet valves 11 connected to the air passages 10 are installed on the side of the lower mold 1.

[0020] Several spring grooves are provided at the bottom of the push plate 12 in the lower mold 1, and tension springs 13 are installed in the spring grooves. The push plate 12 is installed in the lower mold 1 by several tension springs 13.

[0021] The upper mold 2 has alignment grooves 9 on the outside of the drive rod 6, which match the shape of the push block 8. The bottom of the alignment groove 9 is provided with a buffer pad. Several inclined grooves 14 are opened on the bottom of both sides of the push plate 12. A sealing ring is provided at the opening of the air cavity 5.

[0022] The usage process of this utility model:

[0023] First, the mold is installed in the designated position to begin operation. Before operation, the tension spring 13 pulls the push plate 12 downwards, making the upper surface of the push plate 12 flush with the bottom surface of the mold cavity 4, thus allowing operation to begin. Material is placed in and pressing begins. After cooling, the upper mold 2 is raised, and the push block 8 gradually enters the alignment groove 9. The buffer pad cushions the impact and reduces wear caused by collisions. The upper mold 2 then drives the push block 8 and drive rod 6 to rise. The drive rod 6 drives the piston 7 to rise, increasing the air pressure in the air chamber 5 above the piston 7. Consequently, the overall air pressure in the air passage 10 increases. Because the upper mold 2... As the pressure on the pressed finished product is released, the high pressure pushes the push plate 12 upward from the bottom. The push plate 12 gradually moves upward, pushing a portion of the finished product away from the lower mold 1. When the top of the inclined groove 14 is higher than the bottom surface of the lower mold 1, the high pressure gas is quickly ejected outward from the inclined groove 14, pushing the finished product outward, thereby achieving demolding. When the air pressure in the air passage 10 returns to balance, the push plate 12 can return to its position under the action of the tension spring 13. When the upper mold 2 descends, the piston 7 descends and draws in air from the one-way air inlet valve 11, keeping the air pressure in the air chamber 5 at atmospheric pressure until the next demolding.

[0024] It should be understood that the above-described specific embodiments of this utility model are merely illustrative or explanatory of the principles of this utility model and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this utility model should be included within the protection scope of this utility model. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A demolding assembly for precision mold production, comprising a lower mold (1) and an upper mold (2), wherein a plurality of sliding rods (3) are installed between the lower mold (1) and the upper mold (2), and the lower mold (1) has a mold cavity (4), characterized in that: The bottom of the mold cavity (4) has a groove, and a push plate (12) that fits the shape of the groove is provided in the groove. Several air chambers (5) are vertically opened in the side wall of the lower mold (1). The bottom of the air chamber (5) has an exhaust hole (15) that communicates with the outside. Several drive rods (6) are movably inserted in the upper mold (2) and the lower mold (1). The bottom end of each drive rod (6) is located in the air chamber (5), and the bottom of the drive rod (6) is connected to a piston (7). The top of the drive rod (6) is connected to a push block (8). Several air passages (10) are opened in the lower mold (1). One end of the air passage (10) is connected to the top of the air chamber (5), and the other end of the air passage (10) is connected to the groove. Several one-way air inlet valves (11) connected to the air passages (10) are installed on the side of the lower mold (1).

2. A demolding assembly for precision mold production according to claim 1, characterized in that: The lower mold (1) has several spring grooves at the bottom of the push plate (12), and tension springs (13) are installed in the spring grooves. The push plate (12) is installed in the lower mold (1) by several tension springs (13).

3. A demolding assembly for precision mold production according to claim 2, characterized in that: The upper mold (2) has a matching groove (9) on the outside of the drive rod (6) that matches the shape of the push block (8), and a buffer pad is provided at the bottom of the matching groove (9).

4. A demolding assembly for precision mold production according to claim 3, characterized in that: The bottom of both sides of the push plate (12) has several inclined grooves (14).

5. A demolding assembly for precision mold production according to claim 4, characterized in that: The air chamber (5) is provided with a sealing ring at its opening.

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