Integral push-out type detachable injection mold

Abstract

A lower mold base is arranged on the upper surface of a lower mold bottom plate through cushion blocks, an upper push plate and a lower push plate are connected through bolts and movably arranged between the two cushion blocks, a plurality of positioning grooves are formed in the upper surface of the upper push plate, ejector rods are installed at the positions, located at the positioning grooves, of the upper push plate through bolts, and the ejector rods are connected with the lower push plate through bolts. The upper portion of the ejector rod penetrates through the lower die base and the lower die core and is connected with a discharging ejector plate, the discharging ejector plate is movably arranged in the lower die groove, counter bores are formed in the positions, located at the positioning grooves, of a lower panel of the upper push plate, a plurality of through holes are formed in the lower push plate, the positions of the through holes correspond to the positions of the counter bores formed in the upper push plate one to one, and round holes are formed in a lower die bottom plate. According to the utility model, the structure is reasonable, materials are integrally pushed out through the discharging top plate, the probability that thin objects are damaged by ejection and deformed is greatly reduced, the yield is improved, the ejection rod can be disassembled on the premise that the upper push plate and the lower push plate are not disassembled, and the convenience is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to an integrally-pushed and demouldable injection mold. Background Technique

[0002] An injection mold refers to a device that obtains products with a certain shape after injecting a resin material into a metal mold. Specifically, the heat-melted material is injected into the mold cavity under high pressure, and after cooling and solidification, various shaped products are obtained.

[0003] When the existing injection mold discharges materials, generally, a thimble or a ejector rod is used to eject the workpiece from the mold cavity. However, if the workpiece is thin, it is easy to be damaged or deformed during the ejection process, resulting in an increase in the defective rate. Moreover, generally two ejector plates are used for the existing injection mold, and the bottom of the thimble is connected to the ejector plate. When the thimble needs to be replaced, the two ejector plates need to be disassembled to complete the replacement, which is rather inconvenient. Therefore, an improved technology is urgently needed to solve this problem existing in the prior art. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an integrally-pushed and demouldable injection mold. The discharge ejector plate is movably arranged in the lower mold groove of the lower mold core. When ejecting materials, the materials are integrally ejected through the discharge ejector plate. Compared with the direct use of a thimble, the force applied to the object is more uniform, greatly reducing the probability of the thin object being damaged or deformed and improving the qualified rate. The bottom of the ejector rod is connected to the upper push plate, and the lower push plate is provided with through holes at the positioning groove and the counterbore, and the through holes are located at the round holes of the lower mold bottom plate. The ejector rod can be disassembled without disassembling the upper push plate and the lower push plate. Thus, when replacing the lower mold core and the convex mold core, the ejector rod and the discharge ejector plate can be disassembled together, greatly improving the convenience, so as to solve the problems put forward in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: an integrally-pushed and demouldable injection mold, comprising a lower mold main body and an upper mold main body;

[0006] The lower die body includes a lower die bottom plate, cushion blocks, a lower die base, a lower die core, an upper ejector plate, a lower ejector plate, ejector rods and an ejection top plate. Cushion blocks are symmetrically arranged on both sides of the upper surface of the lower die bottom plate. The upper surface of the cushion blocks is provided with a lower die base. The upper surface of the lower die base is provided with a lower die core installation groove, and a lower die core is arranged in the lower die core installation groove. The lower die core is provided with a lower die groove. The upper ejector plate and the lower ejector plate are connected by bolts and are both movably arranged between the two cushion blocks. The upper surface of the upper ejector plate is provided with a plurality of positioning grooves. Ejector rods are installed at the positioning grooves of the upper ejector plate through bolts. The upper parts of the ejector rods pass through the lower die base and the lower die core and are connected with an ejection top plate. The ejection top plate is movably arranged in the lower die groove. Counterbores are arranged on the lower panel of the upper ejector plate and at the positions of the respective positioning grooves. The lower ejector plate is provided with a plurality of through holes. The positions of the through holes correspond to the positions of the counterbores provided on the upper ejector plate one by one. The lower die bottom plate is provided with round holes. The through holes and the round holes are communicated with each other. A plurality of guide rods are arranged on the upper surface of the lower die base;

[0007] The upper die body includes an upper die top plate, an upper die base and a punch core. The lower surface of the upper die top plate is provided with an upper die base. The lower surface of the upper die base is provided with an upper die core installation groove, and a punch core is arranged at the upper die core installation groove. The punch core cooperates with the lower die groove opened by the lower die core. Guide sleeves are arranged in both the upper die top plate and the upper die base. The guide sleeves correspond to the guide rods one by one and cooperate with each other.

[0008] Preferably, for an integral ejection type demouldable injection mould provided by the present utility model, an injection port is opened on the upper die top plate, a feed channel is opened in the upper die base, and a discharge channel is opened in the punch core. The injection port, the feed channel and the discharge channel are communicated with each other.

[0009] Preferably, for an integral ejection type demouldable injection mould provided by the present utility model, the outer edge of the ejection top plate is closely attached to the inner wall of the lower die groove.

[0010] Preferably, for an integral ejection type demouldable injection mould provided by the present utility model, the outer diameter of the ejector rod is the same as the inner diameter of the positioning groove.

[0011] Preferably, for an integral ejection type demouldable injection mould provided by the present utility model, a push top mechanism connection hole is arranged at the central position of the lower ejector plate.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] (1) The ejection top plate is movably arranged in the lower die groove of the lower die core. When ejecting the material, the material is integrally ejected through the ejection top plate. Compared with the direct use of ejector pins, the force applied to the object is more uniform, greatly reducing the probability of thin objects being damaged or deformed, and improving the yield rate.

[0014] (2) The bottom of the ejector rod is connected to the upper push plate. The lower push plate is provided with through holes at the positioning grooves and counterbores, and the through holes are located at the circular holes of the lower die base plate. The ejector rod can be disassembled without disassembling the upper push plate and the lower push plate, so that the ejector rod and the discharge top plate can be disassembled together when replacing the lower die core and the punch core, greatly improving the convenience. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0016] Figure 2 is a schematic view of the structure of the present invention (the lower die core and the punch core are not shown);

[0017] Figure 3 is a schematic view of the working state of the present invention.

[0018] In the figure: lower die base plate 1, spacer block 2, lower die holder 3, lower die core 4, upper push plate 5, lower push plate 6, ejector rod 7, discharge top plate 8, lower die core installation groove 9, lower die groove 10, positioning groove 11, counterbore 12, through hole 13, circular hole 14, guide rod 15, upper die top plate 16, upper die holder 17, punch core 18, upper die core installation groove 19, guide sleeve 20, injection port 21, feed channel 22, discharge channel 23, ejecting mechanism connection hole 24. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] Next, the technical solutions of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention;

[0020] It should be noted that in the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "inner", "outer", "upper", "lower", "both sides", "one end", "the other end", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0021] Please refer to Figure 1-2 , the present invention provides a technical solution: an integrally ejected and dischargeable injection mold, including a lower die main body and an upper die main body;

[0022] The lower die body includes a lower die bottom plate 1, cushion blocks 2, a lower die base 3, a lower die core 4, an upper push plate 5, a lower push plate 6, ejector pins 7 and a discharge top plate 8. Cushion blocks 2 are symmetrically arranged on both sides of the upper surface of the lower die bottom plate 1. A lower die base 3 is arranged on the upper surface of the cushion blocks 2. A lower die core installation groove 9 is formed on the upper surface of the lower die base 3, and a lower die core 4 is arranged in the lower die core installation groove 9. A lower die groove 10 is formed in the lower die core 4. The upper push plate 5 and the lower push plate 6 are connected by bolts and are both movably arranged between the two cushion blocks 2. A plurality of positioning grooves 11 are arranged on the upper surface of the upper push plate 5. Ejector pins 7 are installed at the positioning grooves 11 of the upper push plate 5 through bolts. The outer diameter of the ejector pins 7 is the same as the inner diameter of the positioning grooves 11 to ensure the structural stability of the ejector pins 7. The upper part of the ejector pins 7 passes through the lower die base 3 and the lower die core 4 and is connected with a discharge top plate 8. The discharge top plate 8 is movably arranged in the lower die groove 10. The outer edge of the discharge top plate 8 is in close contact with the inner wall of the lower die groove 10 to ensure that materials will not enter below the discharge top plate 8. Counterbores 12 are arranged on the lower panel of the upper push plate 5 at each positioning groove 11. A plurality of through holes 13 are formed in the lower push plate 6. The positions of the through holes 13 correspond to the positions of the counterbores 12 arranged on the upper push plate 5 one by one. A round hole 14 is formed in the lower die bottom plate 1. The through holes 13 and the round hole 14 are interconnected. A plurality of guide rods 15 are arranged on the upper surface of the lower die base 3. A push mechanism connection hole 24 is arranged at the central position of the lower push plate 6 to realize the connection and installation with the push mechanism;

[0023] The upper die body includes an upper die top plate 16, an upper die base 17 and a convex die core 18. The upper die top plate 16 is arranged on the lower surface of the upper die base 17. An upper die core installation groove 19 is formed on the lower surface of the upper die base 17, and a convex die core 18 is arranged at the upper die core installation groove 19. The convex die core 18 cooperates with the lower die groove 10 formed in the lower die core 4. Guide sleeves 20 are arranged in both the upper die top plate 16 and the upper die base 17. The guide sleeves 20 correspond to the guide rods 15 one by one and cooperate with each other. An injection port 21 is formed in the upper die top plate 16. A feed channel 22 is formed in the upper die base 17. A discharge channel 23 is formed in the convex die core 18. The injection port 21, the feed channel 22 and the discharge channel 23 are interconnected, and materials are extruded through the injection port 21, the feed channel 22 and the discharge channel 23.

[0024] Installation method and working principle: First, assemble the lower die body and the upper die body, and install the lower die core 4 and the punch core 18 according to requirements. At the same time, pass the ejector rod 7 connected to the discharge top plate 8 from top to bottom through the lower die core 4 and the lower die base 3, and insert the bottom of the ejector rod 7 into the corresponding positioning groove 11 of the upper push plate 5. Pass the bolt through the round hole 14 of the lower die bottom plate 1 and the through hole 13 of the lower push plate 6, and connect it to the bottom of the ejector rod 7 through the counterbore 12 to complete the connection between the ejector rod 7 and the upper push plate 5. At this time, the discharge top plate 8 is located at the bottom of the lower die groove 10. Before use, connect the push top frame to the lower die bottom plate 1, connect the piston rod of the discharge push top mechanism to the push top mechanism connection hole 24 of the lower push plate 6, and connect the injection nozzle to the injection port 21. When in use, it is installed laterally as a whole. After closing the mold, the punch core 18 is located in the lower die groove 10 of the lower die core 4, and the punch core 18 and the lower die groove 10 form a mold cavity. The material is extruded into the mold cavity. As Figure 3 shown, it is cooled through the oil channel. After the material solidifies and forms, the mold is opened. The upper push plate 5 and the lower push plate 6 are pushed by the push top mechanism, driving the discharge top plate 8 to push outwards, thereby realizing discharging. The structure of the present utility model is reasonable. The discharge top plate 8 is movably arranged in the lower die groove 10 of the lower die core 4. When ejecting the material, the material is pushed out as a whole through the discharge top plate 8. Compared with the direct use of ejector pins, the force applied to the object is more uniform, greatly reducing the probability of thin objects being damaged or deformed, and improving the qualified rate. And the bottom of the ejector rod 7 is connected to the upper push plate 5. The lower push plate 6 is provided with a through hole 13 at the positioning groove 11 and the counterbore 12, and the through hole 13 is located at the round hole 14 of the lower die bottom plate 1. The ejector rod 7 can be disassembled without disassembling the upper push plate 5 and the lower push plate 6. Therefore, when replacing the lower die core 4 and the punch core 18, the ejector rod 7 and the discharge top plate 8 can be disassembled together, greatly improving the convenience.

[0025] For those parts not detailed in the present utility model, they are all well-known technologies to those skilled in the art.

[0026] Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solutions of the present utility model and are not restrictive. Although the present utility model has been described in detail with reference to the embodiments, those of ordinary skill in the art should understand that the technical solutions of the present utility model can be modified and equivalently replaced without departing from the spirit and scope of the technical solutions of the present utility model, and they should all be covered within the scope of the claims of the present utility model.

Claims

1. An integral push-out removable injection mold, characterized in that: It includes a lower mold body and an upper mold body; The lower mold body comprises a lower mold base plate (1), a cushion block (2), a lower mold seat (3), a lower mold core (4), an upper push plate (5), a lower push plate (6), a push rod (7) and a discharge top plate (8). The cushion blocks (2) are symmetrically arranged on both sides of the upper surface of the lower mold base plate (1). The upper surface of the cushion block (2) is provided with a lower mold seat (3). The upper surface of the lower mold seat (3) is provided with a lower mold core mounting groove (9) and the lower mold core (4) is arranged in the lower mold core mounting groove (9). The lower mold core (4) is provided with a lower mold groove (10). The upper push plate (5) and the lower push plate (6) are connected by bolts and are movably arranged between the two cushion blocks (2). The upper surface of the upper push plate (5) is provided with a plurality of positioning grooves (11). The upper push plate (5) is located at the positioning groove (11) and is installed with a push rod (7) by bolts. The upper part of the push rod (7) passes through the lower die base (3) and the lower die core (4) and is connected to the discharge top plate (8). The discharge top plate (8) is movably arranged in the lower die groove (10). The lower panel of the upper push plate (5) is provided with a countersunk hole (12) at each positioning groove (11). The lower push plate (6) is provided with a plurality of through holes (13). The positions of the through holes (13) correspond to the positions of the countersunk holes (12) provided on the upper push plate (5). The lower die bottom plate (1) is provided with a circular hole (14). The through hole (13) and the circular hole (14) are connected to each other. The upper surface of the lower die base (3) is provided with a plurality of guide rods (15). The upper mold body comprises an upper mold top plate (16), an upper mold base (17) and a punch core (18); the upper mold base (17) is arranged on the lower surface of the upper mold top plate (16); an upper mold core mounting groove (19) is opened on the lower surface of the upper mold base (17); and a punch core (18) is arranged at the upper mold core mounting groove (19); the punch core (18) cooperates with the lower mold groove (10) opened by the lower mold core (4); guide sleeves (20) are arranged in the upper mold top plate (16) and the upper mold base (17); the guide sleeves (20) correspond to the guide rods (15) one by one and cooperate with each other.

2. The integral push-out removable injection mold according to claim 1, characterized in that: The upper mold top plate (16) is provided with an injection port (21), the upper mold base (17) is provided with a feed channel (22), the punch core (18) is provided with a discharge channel (23), and the injection port (21), the feed channel (22) and the discharge channel (23) are interconnected.

3. The integral push-out removable injection mold according to claim 1, characterized in that: The outer edge of the discharge top plate (8) is in close contact with the inner wall of the lower die groove (10).

4. The integral push-out removable injection mold according to claim 1, characterized in that: The outer diameter of the push rod (7) is consistent with the inner diameter of the positioning groove (11).

5. The integral push-out removable injection mold according to claim 1, characterized in that: A push-up mechanism connection hole (24) is provided at the center of the push-down plate (6).

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