A multi-cavity injection mold cooling system

Abstract

The utility model relates to injection mold technical field, concretely is a kind of multi-cavity injection mold cooling system, it include: lower mould and bottom plate, the inner end of lower mould is provided with cavity, cavity penetrates the bottom end lateral wall of lower mould, bottom plate is fixed in the bottom end of lower mould by bolt, the upper end of bottom plate is evenly fixed and is equipped with several heat dissipation plates two, the lateral wall of one end of each heat dissipation plate two is evenly fixed and is equipped with several heat dissipation fins two, by the upper end of lower mould is fixed in upper mould, it can be to injection molding cavity inside injection molding, then by water inlet pipe is injected into cooling water in cavity, cooling water gradually moves up in cavity, and heat dissipation fin one, heat dissipation fin two and the lateral wall of injection molding cavity contact and carry out heat exchange, then by water outlet pipe is discharged from cavity, let the cooling water in cavity be in flowing state, the heat generated when flowing cooling water carries injection molding product, let product quickly form and cool, improve the efficiency of cooling.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, specifically to a multi-cavity injection mold cooling system. Background Technology

[0002] Injection molds are tools used to produce plastic products, giving them a complete structure and precise dimensions. Injection molding, also known as injection molding, is a molding method that combines injection and molding. The advantages of injection molding are high production speed and efficiency, automated operation, a wide variety of colors and shapes, shapes ranging from simple to complex, sizes ranging from large to small, precise product dimensions, easy product updates and replacements, and the ability to produce complex-shaped parts. Injection molding is suitable for mass production and molding processing of complex-shaped products.

[0003] Multi-cavity injection molds can process multiple workpieces at once, but during the injection process, the temperature of the mold cavity is too high, the natural cooling time is too long, the cooling effect is poor, and the rapid cooling effect cannot be achieved, resulting in low product processing efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a cooling system for multi-cavity injection molds to solve the problems mentioned in the background art, such as excessively long natural cooling molding time, poor cooling effect, inability to achieve rapid cooling, and thus low product processing efficiency.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a multi-cavity injection mold cooling system, comprising: a lower mold and a base plate, wherein the inner end of the lower mold is provided with a cavity, the cavity penetrates the bottom side wall of the lower mold, the base plate is fixed to the bottom end of the lower mold by bolts, and a plurality of heat dissipation plates are uniformly fixedly installed on the upper end of the base plate, and a plurality of heat dissipation fins are uniformly fixedly installed on one side wall of each heat dissipation plate, and the other end of the heat dissipation plate is attached to the outer wall of the injection cavity of the lower mold;

[0006] A water inlet pipe is fixedly installed on the lower left side of the lower mold, and a water outlet pipe is fixedly installed on the upper right side. The inner ends of the water inlet pipe and the water outlet pipe are connected to the cavity. A heat dissipation plate is fixedly installed on the side wall of the front and rear ends of the lower mold by bolts. A heat dissipation fin is evenly fixedly installed on the side wall of the heat dissipation plate. One end of the heat dissipation fin passes through the side wall of the lower mold and contacts the outer wall of the injection cavity.

[0007] Furthermore, the lower mold has frame frames fixedly installed on both the inner and outer sides of its lower end, and two sealing gaskets are fixedly installed on the upper end of the base plate.

[0008] Furthermore, when the base plate is fixed to the lower end of the lower mold with bolts, the two sealing gaskets are in close contact with the lower end surfaces of the two side frames respectively.

[0009] Furthermore, support plates are fixedly installed on both the left and right sides of the lower end of the base plate. The support plates are L-shaped, and fixing holes are opened on the lower side wall of the support plates.

[0010] Furthermore, each of the two heat dissipation fins is in the shape of an isosceles trapezoid, with the larger end fixed to the outer wall of the heat dissipation plate. Heat dissipation grooves are symmetrically opened on the outer walls of the left and right ends of each heat dissipation fin.

[0011] Furthermore, several strip-shaped holes corresponding to the first heat dissipation fin are provided on the side walls at both the front and rear ends of the lower mold, and one end of the first heat dissipation fin passes through the strip-shaped hole.

[0012] Furthermore, a sealing gasket 2 is fixedly installed on the inner end side wall of the heat sink 1. The sealing gasket 2 is located outside the heat sink fin 1 and the strip hole, and the sealing gasket 2 is in close contact with the outer wall of the lower mold.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] By fixing the upper mold to the upper end of the lower mold, injection molding can be performed in the injection cavity. Then, cooling water is injected into the cavity through the water inlet pipe. The cooling water gradually moves upward in the cavity and comes into contact with the heat dissipation fins 1 and 2 and the side wall of the injection cavity for heat exchange. Then, it is discharged out of the cavity through the water outlet pipe, keeping the cooling water in the cavity in a flowing state. The flowing cooling water carries the heat generated during the injection molding of the product, allowing the product to be quickly molded and cooled, thus improving the cooling efficiency. Attached Figure Description

[0015] Figure 1 This is a front view of the overall structure of this utility model;

[0016] Figure 2 This is a schematic cross-sectional view of the present invention;

[0017] Figure 3 This is a longitudinal sectional view of the present invention;

[0018] Figure 4 This is a schematic diagram of the upper structure of the base plate of this utility model;

[0019] Figure 5 This is a top view of the heat sink plate 2 and the heat sink fin 2 of this utility model.

[0020] In the diagram: 1. Lower mold; 2. Cavity; 3. Frame; 4. Base plate; 5. Sealing gasket 1; 6. Support plate; 7. Inlet pipe; 8. Outlet pipe; 9. Strip hole; 10. Heat dissipation plate 1; 11. Sealing gasket 2; 12. Heat dissipation fin 1; 13. Heat dissipation plate 2; 14. Heat dissipation fin 2; 15. Heat dissipation groove. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clear and complete, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of this utility model, and are merely used to explain the embodiments of this utility model. They are not intended to limit the embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0022] Please see Figures 1 to 5 This utility model provides a technical solution: a multi-cavity injection mold cooling system, comprising: a lower mold 1 and a base plate 4. The lower mold 1 has an inner cavity 2 that penetrates the bottom sidewall of the lower mold 1. The base plate 4 is fixed to the bottom of the lower mold 1 by bolts. Frames 3 are fixedly installed on both the inner and outer sides of the lower end of the lower mold 1. Two sealing gaskets 5 are fixedly installed on the upper end of the base plate 4. When the base plate 4 is fixed to the lower end of the lower mold 1 by bolts, the two sealing gaskets 5 are in close contact with the lower end faces of the two frame plates 3 respectively. Specifically, after the bolts pass through the outer frame plates 3 and the base plate 4, nuts are threaded onto them. By screwing the nuts... After tightening, the sealing gasket 5 and the frame 3 are brought into close contact to seal the lower port of the lower mold 1. A water inlet pipe 7 is fixedly installed on the lower left side of the lower mold 1, and a water outlet pipe 8 is fixedly installed on the upper right side. The inner ends of the water inlet pipe 7 and the water outlet pipe 8 are connected to the cavity 2. The water inlet pipe 7 is connected to the external output pipe, and the water outlet pipe 8 is connected to the external drain pipe. Cooling water is injected into the cavity 2 through the water inlet pipe 7. The cooling water gradually moves upward in the cavity 2 and is then discharged out of the cavity 2 through the water outlet pipe 8, so that the cooling water in the cavity 2 is in a flowing state. The flowing cooling water carries the heat generated during the injection molding of the product, allowing the product to be quickly molded and cooled.

[0023] Several heat dissipation plates 13 are evenly fixedly installed on the upper end of the base plate 4. Several heat dissipation fins 14 are evenly fixedly installed on one side wall of each heat dissipation plate 13. The other end of the heat dissipation plate 13 is attached to the outer wall of the injection cavity of the lower mold 1. The injection cavity transfers heat to the heat dissipation plate 13, and then to the heat dissipation fins 14, increasing the heat dissipation area. Each heat dissipation fin 14 is in the shape of an isosceles trapezoid, with the larger end fixed to the outer wall of the heat dissipation plate 13, allowing the volume of the heat dissipation fin 14 to gradually decrease from the inside to the outside. Due to the reduced heat transfer, the volume of the second heat dissipation fin 14 is reduced, thereby lowering the material cost of the second heat dissipation fin 14 without affecting heat dissipation. Each second heat dissipation fin 14 has symmetrical heat dissipation grooves 15 on the outer walls at both ends. The heat dissipation grooves 15 increase the contact area between the second heat dissipation fin 14 and the cooling water, improving the efficiency of heat exchange with the cooling water. Specifically, when cooling water is injected into the cavity 2, the cooling water comes into contact with the second heat dissipation plate 13 and the second heat dissipation fin 14, increasing the efficiency of heat exchange between the cooling water and the injection cavity, and improving the cooling efficiency.

[0024] A sealing gasket 2 11 is fixedly installed on the inner side wall of the heat sink 10. The sealing gasket 2 11 is located outside the heat sink fin 12 and the strip hole 9, and the sealing gasket 2 11 is in close contact with the outer wall of the lower mold 1.

[0025] like Figure 1 and Figure 3 As shown, in some embodiments, heat dissipation plates 10 are fixedly installed on the front and rear sidewalls of the lower mold 1 by bolts. Heat dissipation fins 12 are uniformly fixedly installed on the sidewalls of the heat dissipation plates 10. The front and rear ends of the heat dissipation fins 12 pass through the front and rear sidewalls of the heat dissipation plates 10. Several strip holes 9 corresponding to the heat dissipation fins 12 are opened on the sidewalls of the front and rear ends of the lower mold 1. One end of the heat dissipation fin 12 passes through the strip hole 9 and contacts the outer wall of the injection cavity. The heat dissipation fin 12 is located in the middle part of the injection cavity. It does not contact the upper and lower ends of cavity 2, which facilitates the passage of cooling water. The heat generated when the product is injected into the injection cavity is transferred to the outer end through the heat dissipation fin 12 and comes into contact with the air, further accelerating the heat dissipation of the injection mold. More specifically, when the product is injected into the injection cavity of the lower mold 1, the heat generated in the injection cavity is transferred to the heat dissipation fin 12, which transfers the heat to the outer end and comes into contact with the air. At the same time, the heat dissipation fin 12 also comes into contact with the cooling water, further accelerating the heat dissipation of the injection mold and improving the heat dissipation efficiency.

[0026] like Figure 1 and Figure 2 As shown, in some embodiments, support plates 6 are fixedly installed on both the left and right sides of the lower end of the base plate 4. The support plates 6 are L-shaped, and fixing holes are provided on the lower sidewalls of the support plates 6. More specifically, the lower mold 1 is supported by the support plates 6, and the support plates 6 and the lower mold 1 are easily fixed to the operating table through the fixing holes.

[0027] When this device is working, the base plate 4 and the lower mold 1 are fixed on the operating table. Then, the upper mold is installed on the upper end of the lower mold 1 through the driving component. The upper mold is fixed on the upper end of the lower mold 1 by the driving component, and injection molding can be performed in the injection cavity. Then, cooling water is injected into the cavity 2 through the water inlet pipe 7. The cooling water gradually moves upward in the cavity 2 and comes into contact with the heat dissipation fins 12 and 14 and the side wall of the injection cavity for heat exchange. Then, it is discharged out of the cavity 2 through the water outlet pipe 8, so that the cooling water in the cavity 2 is in a flowing state. The flowing cooling water carries the heat generated when the product is injected, so that the product can be quickly formed and cooled, improving the cooling efficiency.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cooling system for a multi-cavity injection mold, comprising: The lower mold (1) and the base plate (4) are characterized in that: the inner end of the lower mold (1) is provided with a cavity (2), the cavity (2) penetrates the bottom side wall of the lower mold (1), the base plate (4) is fixed to the bottom end of the lower mold (1) by bolts, and a number of heat dissipation plates (13) are uniformly fixedly installed on the upper end of the base plate (4). A number of heat dissipation fins (14) are uniformly fixedly installed on one side wall of each heat dissipation plate (13), and the other end of the heat dissipation plate (13) is attached to the outer wall of the injection cavity of the lower mold (1). A water inlet pipe (7) is fixedly installed on the lower left side of the lower mold (1), and a water outlet pipe (8) is fixedly installed on the upper right side. The inner ends of the water inlet pipe (7) and the water outlet pipe (8) are connected to the cavity (2). A heat dissipation plate (10) is fixedly installed on the side walls of the front and rear ends of the lower mold (1) by bolts. A heat dissipation fin (12) is evenly fixedly installed on the side wall of the heat dissipation plate (10). One end of the heat dissipation fin (12) passes through the side wall of the lower mold (1) and contacts the outer wall of the injection cavity.

2. The multi-cavity injection mold cooling system according to claim 1, characterized in that: The lower mold (1) has a frame (3) fixedly installed on the inner and outer sides of its lower end, and two sealing gaskets (5) are fixedly installed on the upper end of the base plate (4).

3. The multi-cavity injection mold cooling system according to claim 2, characterized in that: When the base plate (4) is fixed to the lower end of the lower mold (1) by bolts, the two sealing gaskets (5) are in close contact with the lower end surfaces of the two frame plates (3).

4. The multi-cavity injection mold cooling system according to claim 1, characterized in that: Support plates (6) are fixedly installed on both the left and right sides of the lower end of the base plate (4). The support plates (6) are L-shaped and have fixing holes on the lower side wall.

5. A multi-cavity injection mold cooling system according to claim 1, characterized in that: Each of the two heat dissipation fins (14) is in the shape of an isosceles trapezoid, and the larger end is fixed to the outer wall of the heat dissipation plate (13). Heat dissipation grooves (15) are symmetrically opened on the outer walls of the left and right ends of each heat dissipation fin (14).

6. The multi-cavity injection mold cooling system according to claim 1, characterized in that: The lower mold (1) has several strip holes (9) corresponding to the heat dissipation fins (12) on the side walls at both ends. One end of the heat dissipation fins (12) passes through the strip holes (9).

7. A multi-cavity injection mold cooling system according to claim 1, characterized in that: A sealing gasket 2 (11) is fixedly installed on the inner end side wall of the heat sink 1 (10). The sealing gasket 2 (11) is located outside the heat sink fin 1 (12) and the strip hole (9), and the sealing gasket 2 (11) is in close contact with the outer wall of the lower mold (1).

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