Injection mold for plastic

Abstract

The injection mold comprises an upper mold bin and a lower mold bin, the upper mold bin is arranged on the lower mold bin, bearing plates are symmetrically arranged below the lower mold bin, a fan is arranged in the lower mold bin, a supporting frame is arranged on the lower mold bin, a fixed mold is arranged at the top of the supporting frame, a cooling mechanism is arranged on the outer side face of the lower mold bin, and the cooling mechanism is arranged on the lower mold bin. The cooling mechanism penetrates through the lower die bin and is connected into the fixed die, the movable die is arranged on the fixed die, the upper end of the movable die is connected with the material injection pipe, the upper end of the material injection pipe fixedly penetrates through the upper die bin, and the exhaust filter screen penetrates through the top of the upper die bin. The water pump feeds water in the cooling bin into the cooling inner cavity of the fixed mold to reduce the temperature, and meanwhile, the fan drives air in the upper mold bin and the lower mold bin to flow, so that rapid cooling is realized, the overall production efficiency is improved, and the problem of low air cooling efficiency in the background technology is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of injection molds, and particularly relates to an injection mold for plastics. Background Art

[0002] A two-color mold is a mold that uses two plastic materials to be molded on the same injection molding machine. The molding process is divided into two steps, but the product is only ejected once. This molding process is also called double-material injection molding, which is usually completed with a set of molds and requires a special two-color injection molding machine.

[0003] The existing Chinese patent with publication number CN218838492U discloses an injection mold for plastics, comprising a top plate and a female mold, the lower surface of the top plate is fixedly connected to an upper mold base, the top plate and the right side of the upper surface of the upper mold base are jointly provided with a first injection port, the top plate and the left side of the upper surface of the upper mold base are jointly provided with a second injection port, the lower surface of the upper mold base is provided with a female mold, a small annular cavity is provided inside the female mold, a male mold is provided on the lower surface of the female mold, a large annular cavity is provided inside the male mold, a connecting port is jointly provided between the center of the upper side of the inner wall of the large annular cavity and the center of the lower side of the inner wall of the small annular cavity, an L-shaped air outlet is jointly provided between the left and right sides above the inner wall of the large annular cavity and the left and right sides below the inner wall of the small annular cavity, a first T-shaped port is provided on the right side of the upper surface of the female mold, and a second T-shaped port is provided on the left side of the upper surface of the female mold. The utility model improves the use effect of the equipment.

[0004] During use of the existing injection mold for plastics, the raw materials injected into the mold are hot, and they need to wait for cooling and shaping after being injected into the mold, which greatly increases the processing time and reduces the processing efficiency. The above patent uses air cooling as a cooling method, and the cooling efficiency is low. Therefore, an injection mold for plastics is proposed. Summary of the invention

[0005] The purpose of the utility model is to overcome the problem of low air cooling efficiency in the prior art, and to provide a cooling method that combines water cooling and air cooling through a cooling mechanism and a fan to improve the production efficiency of a plastic injection mold.

[0006] In order to achieve the above-mentioned purpose, the utility model provides an injection mold for plastics, including an upper mold bin and a lower mold bin, the upper mold bin is arranged on the lower mold bin, a bearing plate is symmetrically provided under the lower mold bin, a fan is provided in the lower mold bin, a support frame is provided on the lower mold bin, a fixed mold is provided on the top of the support frame, a cooling mechanism is provided on the outer side of the lower mold bin, the cooling mechanism passes through the lower mold bin and is connected to the fixed mold, a movable mold is provided on the fixed mold, an injection pipe is connected to the upper end of the movable mold, the upper end of the injection pipe is fixedly passed through the upper mold bin, and an exhaust filter is passed through the top of the upper mold bin.

[0007] Preferably, a cooling cavity is provided in the fixed mold, an upward protruding structure is provided in the middle of the cooling cavity, a partition is provided in the upward protruding structure, the partition divides the cooling cavity into two parts, and there is a gap between the upper end of the partition and the upper wall of the cooling cavity.

[0008] Preferably, the cooling mechanism includes a cooling bin, a water supply pipe, a semiconductor refrigeration sheet, a heat dissipation bin, heat dissipation holes, a water pump and a connecting pipe. The cooling bin is symmetrically arranged at the upper end of the outer side surface of the lower mold bin, the water pump is arranged on the outer side surface of the cooling bin, the water pump is connected to the lower end of the outer side surface of the cooling bin, the connecting pipe is connected between two groups of water pumps, one end of the water supply pipe is connected to the upper end of the cooling bin, and the other end of the water supply pipe is connected to the cooling inner cavity, the heat dissipation bin is arranged at the lower end of the cooling bin, the semiconductor refrigeration sheet is arranged through the upper wall of the heat dissipation bin, the heat dissipation holes are evenly distributed and arranged through the bottom wall of the cooling bin, and the heat dissipation holes are connected to the heat dissipation holes.

[0009] Preferably, the support frame includes vents, a support plate, a support rod and a separation rod, the support rods are evenly distributed in the lower mold bin, the support plate is arranged at the top of the support rods, the support plate is arranged at the top of the fan, the vents are evenly distributed throughout the support plate, the separation rods are evenly distributed at the top of the support plate, the separation rods and the vents are staggered, and the separation rods are arranged under the fixed mold.

[0010] Preferably, the exhaust filter is an annular structure, and rod structures are evenly distributed on the exhaust filter. The rod structures penetrate the exhaust filter and are connected to two side surfaces of the exhaust filter.

[0011] Preferably, a sleeve block is provided at the upper end of the side surface of the lower mold bin, and the sleeve block is sleeved on the middle part of the connecting pipe.

[0012] Preferably, a plate structure is provided at the lower ends of both sides of the supporting plate, and the bottom surface of the plate structure and the bottom surface of the supporting plate are located at the same horizontal height.

[0013] The beneficial effects of the utility model are:

[0014] The utility model adds a cooling mechanism and a fan. The water pump sends water in the cooling bin into the cooling inner cavity of the fixed mold to reduce the temperature. At the same time, the fan drives the air flow in the upper mold bin and the lower mold bin to achieve rapid cooling, improve the overall production efficiency, and solve the problem of low air cooling efficiency raised in the background technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The utility model is a schematic diagram of the overall structure of an injection mold for plastics.

[0016] Figure 2 It is a structural schematic diagram of another viewing angle of the utility model for the injection mold of plastic.

[0017] Figure 3 yes Figure 1 Diagram of the internal structure of the middle fixed mold.

[0018] Figure 4 yes Figure 1 Internal structure diagram of the cooling mechanism.

[0019] Figure 5 yes Figure 1 Structural diagram of the middle support frame.

[0020] In the figure: 1. upper mold bin; 2. lower mold bin; 3. bearing plate; 4. fan; 5. support frame; 6. fixed mold; 7. cooling mechanism; 8. movable mold; 9. injection pipe; 10. cooling inner cavity; 11. partition; 12. cooling bin; 13. water supply pipe; 14. semiconductor refrigeration plate; 15. heat dissipation bin; 16. heat dissipation hole; 17. water pump; 18. connecting pipe; 19. vent; 20. support plate; 21. support rod; 22. separation rod; 23. sleeve block, 24. exhaust filter. DETAILED DESCRIPTION

[0021] The following is combined with Figure 1-5 , clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, specific orientation structure and operation, and therefore should not be understood as a limitation on the present invention.

[0023] The present embodiment provides an injection mold for plastics, comprising an upper mold bin 1 and a lower mold bin 2, wherein the upper mold bin 1 is arranged on the lower mold bin 2, and a bearing plate 3 is symmetrically arranged under the lower mold bin 2, and a plate body structure is arranged at the lower ends of both sides of the bearing plate 3, and the bottom surface of the plate body structure and the bottom surface of the bearing plate 3 are at the same horizontal height, a fan 4 is arranged in the lower mold bin 2, a support frame 5 is arranged on the lower mold bin 2, and a fixed mold 6 is arranged on the top of the support frame 5, and a cooling mechanism 7 is arranged on the outer side surface of the lower mold bin 2, and the cooling mechanism 7 passes through the lower mold bin 2 and is connected to the fixed mold 6, and a movable mold 8 is arranged on the fixed mold 6, and an injection pipe 9 is connected to the upper end of the movable mold 8, and the upper end of the injection pipe 9 is fixedly arranged through the upper mold bin 1, and an exhaust filter 24 is arranged through the top of the upper mold bin 1, and the exhaust filter 24 is an annular structure, and rod structures are evenly distributed on the exhaust filter 24, and the rod structures pass through the exhaust filter 24 and are connected to the two side surfaces of the exhaust filter 24.

[0024] In one embodiment, specifically, a cooling cavity 10 is provided in the fixed mold 6, an upper protruding structure is provided in the middle of the cooling cavity 10, a partition 11 is provided in the upper protruding structure, and the partition 11 divides the cooling cavity 10 into two parts. There is a gap between the upper end of the partition 11 and the upper wall of the cooling cavity 10.

[0025] In one embodiment, specifically, the cooling mechanism 7 includes a cooling bin 12, a water supply pipe 13, a semiconductor refrigeration sheet 14, a heat dissipation bin 15, heat dissipation holes 16, a water pump 17 and a connecting pipe 18. The cooling bin 12 is symmetrically arranged at the upper end of the outer side of the lower mold bin 2, the water pump 17 is arranged on the outer side of the cooling bin 12, the water pump 17 is connected to the lower end of the outer side of the cooling bin 12, the water pumps 17 on both sides have different transportation directions, the connecting pipe 18 is connected between the two groups of water pumps 17, a sleeve block 23 is provided at the upper end of the side of the lower mold bin, the sleeve block 23 is sleeved on the middle part of the connecting pipe 18, one end of the water supply pipe 13 is connected to the upper end of the cooling bin 12, and the other end of the water supply pipe 13 is connected to the cooling inner cavity 10, the heat dissipation bin 15 is arranged at the lower end of the cooling bin 12, the semiconductor refrigeration sheet 14 is arranged through the upper wall of the heat dissipation bin 15, the heat dissipation holes 16 are evenly distributed and arranged through the bottom wall of the cooling bin 12, and the heat dissipation holes 16 are connected to the heat dissipation holes 16.

[0026] In one embodiment, specifically, the support frame 5 includes vents 19, support plates 20, support rods 21 and separation rods 22. The support rods 21 are evenly distributed in the lower mold bin 2, the support plates 20 are arranged on the top of the support rods 21, the support plates 20 are arranged on the top of the fan 4, the vents 19 are evenly distributed throughout the support plates 20, the separation rods 22 are evenly distributed on the top of the support plates 20, the separation rods 22 and the vents 19 are staggered, and the separation rods 22 are arranged under the fixed mold 6.

[0027] The working process of the injection mold for plastic in this embodiment is as follows: after the injection molding is completed, while waiting for cooling, the fan 4, water pump 17 and semiconductor refrigeration plate 14 are started, the upper surface temperature of the semiconductor refrigeration plate 14 drops, and the water temperature in the cooling bin 12 drops. The water pump 17 on one side draws water from the cooling bin 12 and sends it to the water pump 17 on the other side through the connecting pipe 18. The water pump 17 on the other side sends water into the cooling bin 12 and enters the cooling inner cavity 10 through the water supply pipe 13 to reduce the temperature of the fixed mold 6. Two sets of symmetrical water pumps 17, water supply pipes 13, cooling bin 12 cooperate with the connecting pipe 18 to form a circulating water cooling mechanism 7, which continuously reduces the temperature of the fixed mold 6 and speeds up the working efficiency. At the same time, the fan 4 blows air from the bottom to the top to reduce the temperature of the fixed mold 6 and the movable mold 8, thereby solving the problem of low air cooling efficiency proposed in the background technology.

[0028] The above contents are merely examples and explanations of the structure of the utility model. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of the utility model.

Claims

1. An injection mold for plastic, characterized in that: The invention comprises an upper mold bin (1) and a lower mold bin (2), wherein the upper mold bin (1) is arranged on the lower mold bin (2), a bearing plate (3) is symmetrically arranged below the lower mold bin (2), a fan (4) is arranged inside the lower mold bin (2), a support frame (5) is arranged on the lower mold bin (2), a fixed mold (6) is arranged on the top of the support frame (5), a cooling mechanism (7) is arranged on the outer side of the lower mold bin (2), the cooling mechanism (7) passes through the lower mold bin (2) and is connected to the fixed mold (6), a movable mold (8) is arranged on the fixed mold (6), an injection pipe (9) is connected to the upper end of the movable mold (8), the upper end of the injection pipe (9) is fixedly arranged to pass through the upper mold bin (1), and an exhaust filter (24) is arranged to pass through the top of the upper mold bin (1).

2. The injection mold for plastic according to claim 1, characterized in that: A cooling inner cavity (10) is provided in the fixed mold (6), an upper protrusion structure is provided in the middle of the cooling inner cavity (10), a partition (11) is provided in the upper protrusion structure, the partition (11) divides the cooling inner cavity (10) into two parts, and a gap exists between the upper end of the partition (11) and the upper wall of the cooling inner cavity (10).

3. The injection mold for plastic according to claim 2, characterized in that: The cooling mechanism (7) comprises a cooling bin (12), a water supply pipe (13), a semiconductor refrigeration sheet (14), a heat dissipation bin (15), heat dissipation holes (16), a water pump (17) and a connecting pipe (18); the cooling bin (12) is symmetrically arranged at the upper end of the outer side surface of the lower mold bin (2); the water pump (17) is arranged on the outer side surface of the cooling bin (12); the water pump (17) is connected to the lower end of the outer side surface of the cooling bin (12); the connecting pipe (18) is connected to the two groups of The water pump (17) is disposed between the cooling chamber (12), one end of the water supply pipe (13) is connected to the upper end of the cooling chamber (12), the other end of the water supply pipe (13) is connected to the cooling inner cavity (10), the heat dissipation chamber (15) is disposed at the lower end of the cooling chamber (12), the semiconductor refrigeration plate (14) is disposed through the upper wall of the heat dissipation chamber (15), the heat dissipation holes (16) are evenly distributed and disposed through the bottom wall of the cooling chamber (12), and the heat dissipation holes (16) are connected to the heat dissipation holes (16).

4. The injection mold for plastic according to claim 3, characterized in that: The support frame (5) comprises vent holes (19), a support plate (20), a support rod (21) and a separation rod (22); the support rod (21) is evenly distributed in the lower mold bin (2); the support plate (20) is arranged on the top of the support rod (21); the support plate (20) is arranged on the top of the fan (4); the vent holes (19) are evenly distributed and penetrate the support plate (20); the separation rod (22) is evenly distributed and arranged on the top of the support plate (20); the separation rod (22) and the vent holes (19) are staggered; and the separation rod (22) is arranged under the fixed mold (6).

5. The injection mold for plastic according to claim 1, characterized in that: The exhaust filter (24) is an annular structure, and rod structures are evenly distributed on the exhaust filter (24), wherein the rod structures penetrate the exhaust filter (24) and are connected to two side surfaces of the exhaust filter (24).

6. The injection mold for plastic according to claim 1, characterized in that: It also comprises a lower mould bin, wherein a sleeve block (23) is provided at the upper end of the side surface of the lower mould bin, and the sleeve block (23) is sleeved on the middle part of the connecting pipe (18).

7. The injection mold for plastic according to claim 1, characterized in that: A plate structure is provided at the lower ends of both sides of the bearing plate (3), and the bottom surface of the plate structure and the bottom surface of the bearing plate (3) are located at the same horizontal height.

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