Initiative demolding injection molding machine mold

Abstract

The utility model relates to the technical field of injection molding equipment, in particular to an active demolding injection molding machine mold which comprises a lower supporting seat, an upper supporting seat, a guide column, a first driving piece, a second driving piece, an upper concave mold, a lower convex mold, a forming cavity and a first lifting piece, a mounting plate is arranged below the second driving piece, and a reset assembly is arranged at the bottom end of the mounting plate. Edge ejector rods are symmetrically arranged on the upper surface of the mounting plate, inner side ejector rods are arranged on the inner sides of the two edge ejector rods, the top ends of the edge ejector rods and the top ends of the inner side ejector rods penetrate through the second driving part and extend to the top end of the lower male die, pushing rods are symmetrically arranged at the bottom end of the first driving part, and a through hole is formed in the second driving part; during demolding, a plurality of positions of a product can be pushed, so that each part of the product is uniformly stressed, the demolding effect is good, and the product is not easy to deform and damage.

Description

Technical Field

[0001] This utility model belongs to the field of injection molding equipment technology, specifically an active demolding injection molding machine mold. Background Technology

[0002] Most automotive parts are made of engineering plastics and are typically injection molded. After injection molding, the parts adhere to the mold and require manual separation by workers or by ejection mechanisms. Manual separation often involves prying one side of the part first, resulting in uneven force application. This is time-consuming, labor-intensive, and prone to causing deformation and damage to the parts. Ejection mechanisms on existing injection molds are often located at the center of the mold. During operation, the center experiences greater force, leading to uneven force distribution during demolding and increasing the risk of deformation and damage to the parts. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide an active demolding injection molding machine mold that, during demolding, can push multiple positions of the product, so that the force is evenly distributed throughout, resulting in good demolding effect and less likelihood of deformation or damage to the product.

[0004] The technical solution adopted by this utility model to solve its technical problem is as follows: An active demolding injection molding machine mold includes a lower support base, an upper support base positioned above the lower support base, guide pillars positioned at four corners between the upper and lower support bases, a first driving member slidably mounted on the guide pillars, a second driving member fixedly mounted on the guide pillars, an upper concave mold positioned at the bottom end of the first driving member, and a lower convex mold positioned at the top end of the second driving member. A molding cavity is formed between the upper concave mold and the lower convex mold. A first lifting member is provided at the top end of the upper support base to drive the first driving member closer to or away from the second driving member. A mounting plate is provided below the second driving member, and a reset mechanism is provided between the bottom end of the mounting plate and the lower support base. The assembly includes symmetrically arranged edge push rods on the upper surface of the mounting plate, and symmetrically arranged inner push rods on the inner sides of the two edge push rods. The top ends of the edge push rods and inner push rods pass through the second driving member and extend to the top of the lower punch. At the bottom end of the first driving member, push rods are symmetrically arranged on both sides of the upper die. The second driving member has through holes that match the push rods. When the first lifting member drives the upper die and lower punch to close, the push rods pass through the through holes and abut against the upper surface of the mounting plate, causing the mounting plate to exert pressure on the reset assembly, causing the edge push rods and inner push rods to be flush with the upper surface of the lower punch. A center ejection assembly is provided at the middle of the two inner push rods of the lower punch.

[0005] Furthermore, there is a gap between the bottom end of the second driving component and the top end of the lower support base, and the mounting plate and reset assembly are located inside the gap.

[0006] Furthermore, the reset assembly includes an upper mounting base disposed at the bottom end of the mounting plate, a lower mounting base disposed at the top end of the lower support base, a telescopic rod disposed between the upper mounting base and the lower mounting base, and a spring sleeved on the outer surface of the telescopic rod.

[0007] Furthermore, the edge push rod and the inner push rod can slide inside the lower punch and the second driving member.

[0008] Furthermore, the center ejection assembly includes a receiving groove at the center of the top of the lower punch, a first through hole inside the receiving groove, a second through hole at the center of the second drive member communicating with the first through hole, a third through hole at the center of the mounting plate, a push plate inside the receiving groove, a long rod at the bottom of the push plate, and a second lifting member at the bottom of the lower support base. The bottom end of the long rod passes through the first through hole, the second through hole, and the third through hole, and extends to the bottom of the mounting plate. The driving end of the second lifting member is connected to the bottom end of the long rod.

[0009] Furthermore, the first through hole, the second through hole, and the third through hole are located on the same central axis.

[0010] The beneficial effects of this utility model are:

[0011] This invention utilizes a mounting plate, a reset assembly, edge ejector pins, inner ejector pins, a push rod, a through hole, and a center ejector assembly. When the upper die and lower punch close, the push rod moves downwards, passes through the mounting plate, and contacts the upper surface of the mounting plate, pushing it and causing it to compress the reset assembly, resulting in elastic deformation. After cooling and molding, the upper die and lower punch separate, the push rod moves away from the mounting plate, the reset assembly resets, and drives the edge ejector pins and inner ejector pins upwards, applying a demolding force to the product. The center ejector assembly also applies a demolding force to the product. Through their coordinated action, a pushing force is evenly applied to the product from multiple locations, achieving demolding. This eliminates the need for manual demolding, resulting in higher demolding efficiency, better product demolding effect, and reduced risk of deformation and damage due to uneven force. Attached Figure Description

[0012] The foregoing and other objects, features and advantages of this invention will become apparent from the following detailed description taken in conjunction with the accompanying drawings.

[0013] Figure 1 This is a front sectional view of the present invention after mold assembly.

[0014] Figure 2 This is a schematic diagram of the reset component structure of this utility model.

[0015] The components are as follows: 1. Lower support base; 2. Upper support base; 3. Guide column; 4. First driving component; 5. Second driving component; 6. Upper die; 7. Lower punch; 8. Forming cavity; 9. First lifting component; 10. Mounting plate; 11. Reset assembly; 1101. Upper mounting base; 1102. Lower mounting base; 1103. Telescopic rod; 1104. Spring; 12. Edge push rod; 13. Inner push rod; 14. Push rod; 15. Through hole; 1601. Receiving groove; 1602. First through hole; 1603. Second through hole; 1604. Third through hole; 1605. Push plate; 1606. Long rod; 1607. Second lifting component. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings.

[0017] Reference Figure 1-2 As shown, the active demolding injection molding machine mold includes a lower support base 1, an upper support base 2 disposed above the lower support base 1, guide posts 3 disposed at the four corners between the upper support base 2 and the lower support base 1, a first driving member 4 slidably disposed on the guide posts 3 and a second driving member 5 fixedly disposed on the guide posts 3, an upper concave mold 6 disposed at the bottom end of the first driving member 4, a lower punch 7 disposed at the top end of the second driving member 5, a molding cavity 8 formed between the upper concave mold 6 and the lower punch 7, and a first lifting member 9 disposed at the top end of the upper support base 2 to drive the first driving member 4 to approach or move away from the second driving member 5. The first lifting member 9 can be a hydraulic lifting rod, which drives the first driving member 4 to move up and down along the guide posts 3 to make the upper concave mold 6 and the lower punch 7 close or separate.

[0018] A mounting plate 10 is provided below the second driving member 5. A reset assembly 11 is provided between the bottom end of the mounting plate 10 and the bottom support 1. A gap space is left between the bottom end of the second driving member 5 and the top end of the bottom support 1. The mounting plate 10 and the reset assembly 11 are located inside the gap space. The mounting plate 10 can move up and down reciprocally inside the gap space. The reset assembly 11 includes an upper mounting seat 1101 provided at the bottom end of the mounting plate 10, a lower mounting seat 1102 provided at the top end of the bottom support 1, and a telescopic rod 110 provided between the upper mounting seat 1101 and the lower mounting seat 1102. 3. A spring 1104 is sleeved on the outer surface of the telescopic rod 1103. One end of the spring 1104 abuts against the upper mounting seat 1101, and the other end abuts against the lower mounting seat 1102. The upper and lower mounting seats are on the same central axis. When the mold is closed, the mounting plate 10 is pushed and moves closer to the lower support seat 1, which drives the upper mounting seat 1101 to move closer to the lower mounting seat 1102, causing the telescopic rod to contract and compress the spring 1104, causing it to undergo elastic deformation. When the mold is separated, the pushing force disappears, the reset assembly 11 resets, and drives the mounting plate 10 to move upward.

[0019] Edge push rods 12 are symmetrically arranged on the upper surface of the mounting plate 10. Inner push rods 13 are symmetrically arranged on the inner sides of the two edge push rods 12. The top ends of the edge push rods 12 and inner push rods 13 pass through the second driving member 5 and extend to the top of the lower punch 7. Push rods 14 are symmetrically arranged on both sides of the upper die 6 at the bottom end of the first driving member 4. The second driving member 5 has through holes 15 that match the push rods 14. When the first lifting member 9 drives the upper die 6 and lower punch 7 to close, the push rods 14 pass through the through holes 15 and abut against the upper surface of the mounting plate 10, causing the mounting plate 10 to exert pressure on the reset assembly 11, thus driving the edge push rods 12 to close. The ejector pin 12 and the inner ejector pin 13 are flush with the upper surface of the lower punch 7. The lower punch 7 is provided with a center ejector assembly located in the middle of the two inner ejector pins 13. The edge ejector pin 12 and the inner ejector pin 13 can slide inside the lower punch 7 and the second driving member 5. When the mold is closed, the upper surfaces of the edge ejector pin 12, the inner ejector pin 13 and the center ejector assembly are flush with the lower punch 7, forming a complete forming cavity with the upper die 6. When the mold is separated, under the action of the reset assembly 11, the top ends of the edge ejector pin 12 and the inner ejector pin 13 move to the top end of the lower punch 7, and the center ejector assembly is also driven to the top end by its drive unit.

[0020] When the upper die and lower punch close, the push rod moves downward, passes through, and comes into contact with the upper surface of the mounting plate, pushing it and causing it to squeeze the reset assembly, causing it to undergo elastic deformation. After cooling and molding, the upper die and lower punch separate, the push rod moves away from the mounting plate, the reset assembly resets, and drives the edge ejector pins and inner ejector pins to move upward, applying a demolding force to the product. The center ejector assembly also applies a demolding force to the product. They work together to apply a uniform pushing force to the product from multiple positions, thus achieving demolding. There is no need for manual demolding by the operator, the demolding efficiency is higher, the demolding effect of the product is better, and the product is less likely to be deformed and damaged due to uneven force.

[0021] The center ejection assembly includes a receiving groove 1601 at the center of the top of the lower punch 7, a first through hole 1602 inside the receiving groove 1601, a second through hole 1603 at the center of the second driving member 5 communicating with the first through hole 1602, a third through hole 1604 at the center of the mounting plate 10, a push plate 1605 inside the receiving groove 1601, a long rod 1606 at the bottom of the push plate 1605, and a second lifting member 1607 at the bottom of the lower support 1. The second lifting member 1607 can specifically be a cylinder, with the bottom of the long rod 1606 passing through... The first through hole 1602, the second through hole 1603, and the third through hole 1604 extend to the bottom of the mounting plate 10. The driving end of the second lifting member 1607 is connected to the bottom end of the long rod 1606. The first through hole 1602, the second through hole 1603, and the third through hole 1604 are on the same central axis. During mold parting, the second lifting member 1607 drives the long rod 1606 to move upward, causing the push plate 1605 to move upward into the receiving groove 1601, thus pushing the center of the product. During mold closing, the second lifting member 1607 drives the push plate 1605 to move into the receiving groove 1601.

[0022] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. An active demolding injection molding machine mold, comprising a lower support base (1), an upper support base (2) arranged above the lower support base (1), guide columns (3) arranged at four corners between the upper support base (2) and the lower support base (1), a first driving member (4) slidingly arranged on the guide columns (3) and a second driving member (5) fixedly arranged on the guide columns (3), an upper female die (6) arranged at the bottom end of the first driving member (4), a lower male die (7) arranged at the top end of the second driving member (5), a forming cavity (8) formed between the upper female die (6) and the lower male die (7), and a first lifting member (9) arranged at the top end of the upper support base (2) to drive the first driving member (4) to move closer to or farther away from the second driving member (5), characterized in that: The lower part of the second driving part (5) is provided with a mounting plate (10), a reset assembly (11) is arranged between the bottom end of the mounting plate (10) and the lower support base (1), the upper surface of the mounting plate (10) is symmetrically provided with edge top rods (12), the inner sides of the two edge top rods (12) are symmetrically provided with inner side top rods (13), the top ends of the edge top rods (12) and the inner side top rods (13) penetrate the second driving part (5) and extend to the top end of the lower convex die (7), the bottom end of the first driving part (4) is symmetrically provided with push rods (14) on both sides of the upper concave die (6), the second driving part (5) is provided with through holes (15) matched with the push rods (14), when the first lifting part (9) drives the upper concave die (6) to combine with the lower convex die (7), the push rods (14) abut against the upper surface of the mounting plate (10) by penetrating the through holes (15), and the mounting plate (10) drives the reset assembly (11) to form pressure, and drives the edge top rods (12) and the inner side top rods (13) to be flush with the upper surface of the lower convex die (7), and the lower convex die (7) is provided with a center ejection assembly at the middle of the two inner side top rods (13).

2. The active ejection injection molding machine mold of claim 1, wherein: The bottom end of the second driving part (5) and the top end of the lower support base (1) are spaced apart, and the mounting plate (10) and the reset assembly (11) are located in the spacing space.

3. The active ejection injection molding machine mold of claim 1, wherein: The reset assembly (11) comprises an upper mounting seat (1101) arranged at the bottom end of the mounting plate (10), a lower mounting seat (1102) arranged at the top end of the lower support base (1), and a telescopic rod (1103) arranged between the upper mounting seat (1101) and the lower mounting seat (1102), and a spring (1104) sleeved on the outer surface of the telescopic rod (1103).

4. The active ejection injection molding machine mold of claim 1, wherein: The edge top rods (12) and the inner side top rods (13) can slide in the lower convex die (7) and the second driving part (5).

5. The active ejection injection molding machine mold of claim 1, wherein: The center ejection assembly comprises a containing groove (1601) arranged at the center of the top end of the lower convex die (7), a first through hole (1602) arranged in the containing groove (1601), a second through hole (1603) arranged at the center of the second driving part (5) and communicating with the first through hole (1602), a third through hole (1604) arranged at the center of the mounting plate (10), a push plate (1605) arranged in the containing groove (1601), a long rod (1606) arranged at the bottom end of the push plate (1605), and a second lifting part (1607) arranged at the bottom end of the lower support base (1), the bottom end of the long rod (1606) penetrates the first through hole (1602), the second through hole (1603) and the third through hole (1604) and extends to the bottom end of the mounting plate (10), and the driving end of the second lifting part (1607) is connected with the bottom end of the long rod (1606).

6. The active ejection injection molding machine mold of claim 5, wherein: The first through hole (1602), the second through hole (1603) and the third through hole (1604) are on the same central axis.

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