Plastic injection mold with high cooling forming efficiency

Abstract

The utility model discloses a plastic injection mold with high cooling molding efficiency, which comprises a bottom plate, a lower mold plate, an upper mold plate, a supporting seat and a top plate, the top of the bottom plate is fixedly connected with the supporting seat, the top of the supporting seat is fixedly connected with the lower mold plate, the top of the lower mold plate is connected with the upper mold plate, and the top plate is fixedly connected with the top plate. A lower mold cavity is formed in the top of the lower mold plate, an upper mold cavity is formed in the bottom of the upper mold plate, the heat conducting plates are embedded in the bottom of the inner wall of the lower mold cavity and the top of the inner wall of the upper mold cavity, and cooling cavities are formed in the lower mold plate and the upper mold plate; according to the injection mold, after mold injection molding, cooling is conducted through the cooling components on the lower mold plate and the upper mold plate at the same time, the upper part and the lower part of the mold are cooled at the same time, mold forming is accelerated, and the mold forming efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic injection molds, in particular to a plastic injection mold with high cooling molding efficiency. Background Art

[0002] A mold is a tool used to make molded objects. This tool is composed of various parts, and different molds are composed of different parts. It mainly realizes the processing of the object's shape by changing the physical state of the molded material. In the production process of small household appliance plastic shells, molds are needed to facilitate the processing and molding of plastic shells.

[0003] According to the patent number CN 220242316 U, a plastic injection mold with high cooling molding efficiency is disclosed, which includes a lower mold plate, an upper mold plate, a cooling cavity, a cooling pipe, an upper mold cavity, a lower mold cavity, a heat conducting plate, a heat conducting sheet, a through hole, a pipe plug, an L-shaped clamp block, a support plate, a bracket, a motor and a transmission shaft. Coolant is injected into the cooling cavity through the cooling pipe, and the heat of the plastic in the mold cavity is quickly transferred through the heat conducting plate and the heat conducting sheet, and the cooling liquid in the cooling cavity is used to quickly cool down. However, the upper half of the molding mold is located in the upper mold cavity, and the lower half is located in the lower mold cavity. Only a cooling cavity for cooling the mold is set in the lower mold cavity, so that the lower part of the mold Cooling, and when the cooling effect of the lower part is transferred to the upper part of the mold, the entire mold is cooled and formed. This process takes a long time, so the cooling effect of the mold is not ideal; and the existing injection mold cools the mold by passing the coolant into the cooling cavity. After the cooled mold is demolded and taken out, when the next mold forming is carried out, the coolant is still in the cooling cavity and is not convenient to take out, which causes the liquid re-injected into the mold cavity to be unevenly hot and cold, which is easy to affect the quality of the molding mold, and is also not convenient for the replacement of the coolant. For this reason, we propose a plastic injection mold with high cooling and molding efficiency. Utility Model Content

[0004] The utility model aims to provide a plastic injection mold with high cooling molding efficiency to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a plastic injection mold with high cooling molding efficiency, comprising a bottom plate, a lower template, an upper template, a support seat and a top plate, the top of the bottom plate is fixedly connected to the support seat, the top of the support seat is fixedly connected to the lower template, the top of the lower template is connected to the upper template, and the top of the upper template is fixedly connected to the top plate, the top of the top plate is provided with an injection port, and also includes a heat conducting plate, a heat sink, a water inlet pipe and a water outlet, the top of the lower template is provided with a lower mold cavity, the bottom of the upper template is provided with an upper mold cavity, the bottom of the lower mold cavity inner wall and the top of the upper mold cavity inner wall are both embedded with heat conducting plates, cooling cavities are provided in the lower template and the upper template, the top of the inner wall of the cooling cavity is equidistantly fixedly connected with heat sinks, the ends of the heat sinks are fixedly connected to the heat conducting plate, one side of the lower template and the upper template are connected with water inlet pipes, and the two water inlet pipes are respectively connected to the inside of the two cooling cavities.

[0006] Preferably, one end of the top of the base plate is fixedly connected to a cold water tank, and a water pump is fixedly installed on the top of the cold water tank, the water inlet end of the water pump extends into the cold water tank, and the water outlet end of the water pump is fixedly connected to a water pipe, and the two water inlet pipes are connected to the water pipe, and the lower template and the upper template are provided with water outlets on the side away from the water inlet pipe, and the two water outlets are respectively connected to the bottom ends of the two cooling chambers, and a control valve is fixedly installed on the outside of the water outlet.

[0007] Preferably, an air inlet pipe is provided on one side of the lower template and the upper template, cooling channels are opened in the two heat conduction plates, the ends of the two air inlet pipes are respectively connected to one end of the two cooling channels, and an air outlet is provided on the other side of the lower template and the upper template, and the two air outlets are respectively connected to the other end of the two cooling channels.

[0008] Preferably, a fan is fixedly installed on the top of the cold water tank, the air inlet end of the fan is fixedly connected to an air inlet pipe, and the end of the air inlet pipe passes through the cold water tank and is connected to the outside, the air outlet end of the fan is fixedly connected to a ventilation pipe, and the ends of the two air inlet pipes are connected to the ventilation pipe.

[0009] Preferably, the cooling channel is arranged in a serpentine structure as a whole, and a section of the air inlet pipe located inside the cold water tank is arranged in a plurality of connected S-shaped structures.

[0010] Preferably, the water inlet pipe, water passage pipe, ventilation pipe and air inlet pipe are all elastic hoses.

[0011] Preferably, a recovery tank is connected to the top of the bottom plate on one side away from the cold water tank, and ends of the two water outlets are located directly above the recovery tank.

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

[0013] 1. When the water pump of the utility model works, the cold water in the cold water tank is pumped into the water pipe, and is respectively injected into the cooling chambers of the lower mold plate and the upper mold plate through two water inlet pipes connected to the water pipe. The cold water in the cooling chamber contacts the heat sink, and a plurality of heat sinks are connected to the heat conduction plate to cool the upper and lower parts of the mold at the same time.

[0014] 2. When the fan of the utility model works, the cold air is respectively placed into the cooling channels on the two heat conducting plates through the two air inlet pipes, and finally discharged through the air outlet, which can quickly cool the heat conducting plates and thus achieve the effect of quickly cooling the mold.

[0015] 3. The utility model realizes simultaneous cooling of the upper and lower parts of the mold by cooling the cooling components on the lower mold plate and the upper mold plate, which speeds up the molding of the mold and greatly improves the molding efficiency of the mold.

[0016] 4. Before the next mold processing, the utility model opens the control valve on the water outlet to discharge the water in the cooling cavity of the lower mold plate and the upper mold plate into the recovery tank for recovery, so that the inside of the cooling cavity returns to its original state, does not affect the next injection molding, and ensures the quality of mold molding. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the internal connection structure of the upper template and the lower template of the utility model;

[0019] Figure 3 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 4 This is a schematic diagram of the heat conduction plate structure of the utility model;

[0021] Figure 5 It is a cross-sectional structural schematic diagram of a top view of a heat conducting plate of the utility model;

[0022] Figure 6 It is a cross-sectional structural schematic diagram of a top view of a cold water tank of the present utility model.

[0023] In the figure: 1. bottom plate; 2. lower template; 3. upper template; 4. support seat; 5. top plate; 6. lower mold cavity; 7. upper mold cavity; 8. heat conduction plate; 9. cooling cavity; 10. heat sink; 11. cold water tank; 12. water pump; 13. water inlet pipe; 14. water pipe; 15. water outlet; 16. fan; 17. ventilation pipe; 18. air inlet pipe; 19. air outlet; 20. cooling channel; 21. recovery tank; 22. air inlet pipe. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to 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 the embodiments. Based on the embodiments in 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.

[0025] See also Figure 1-6 The utility model provides a technical solution: a plastic injection mold with high cooling molding efficiency, comprising a bottom plate 1, a lower template 2, an upper template 3, a support seat 4 and a top plate 5, the top of the bottom plate 1 is fixedly connected with the support seat 4, the top of the support seat 4 is fixedly connected with the lower template 2, the top of the lower template 2 is connected with the upper template 3, and the top of the upper template 3 is fixedly connected with the top plate 5, and the top of the top plate 5 is provided with an injection port.

[0026] It should be noted that the injection liquid can be placed into the mold cavity through the injection port. The cooling cavity 9 on the upper mold plate 3 is provided with a column. The internal injection channel connected to the injection port is located inside the column. The injection channel is connected to the inside of the mold cavity to facilitate the injection liquid to be introduced into the mold cavity.

[0027] It also includes a heat conducting plate 8, a heat sink 10, a water inlet pipe 13 and a water outlet 15. A lower mold cavity 6 is opened at the top of the lower mold 2, an upper mold cavity 7 is opened at the bottom of the upper mold 3, and a heat conducting plate 8 is embedded and installed at the bottom of the inner wall of the lower mold cavity 6 and the top of the inner wall of the upper mold cavity 7. A cooling cavity 9 is opened in the lower mold 2 and the upper mold 3. The top of the inner wall of the cooling cavity 9 is equidistantly fixedly connected with heat sinks 10, and the end of the heat sink 10 is fixedly connected to the heat conducting plate 8. One side of the lower mold 2 and the upper mold 3 is connected to a water inlet pipe 13, and the two water inlet pipes 13 are respectively connected to the inside of the two cooling cavities 9.

[0028] It should be noted that when the utility model is used, the injection liquid is placed into the mold cavity through the injection port (the cooling cavity 9 on the upper mold plate 3 is provided with a column, and the internal injection channel connected to the injection port is located inside the column, and the injection channel is connected to the inside of the mold cavity to facilitate the injection liquid to be passed into the mold cavity), and then the control system provided by the device controls the water pump 12 to pump the cold water inside the cold water tank 11 into the water pipe 14, and injects the cold water into the cooling cavity 9 of the lower mold plate 2 and the upper mold plate 3 respectively through two water inlet pipes 13 connected to the water pipe 14, and the cold water inside the cooling cavity 9 contacts the heat sink 10, and the multiple heat sinks 10 are connected to the heat conducting plate 8 for cooling. At the same time, the fan 16 works, and the cold air is respectively placed into the cooling channels 20 on the two heat conducting plates 8 through the two air inlet pipes 18, and finally discharged through the air outlet 19, which can quickly cool the heat conducting plates 8, thereby achieving the effect of quickly cooling the mold. The cooling components on the lower template 2 and the upper template 3 are operated at the same time, so that the upper and lower parts of the mold are cooled at the same time, which speeds up the molding of the mold and greatly improves the molding efficiency of the mold. Before the next mold processing, the control valve on the water outlet 15 is opened to discharge the water in the cooling cavity 9 of the lower template 2 and the upper template 3 into the recovery tank 21 for recovery, so that the inside of the cooling cavity 9 is restored to its original state without affecting the next injection molding.

[0029] One end of the top of the base plate 1 is fixedly connected to a cold water tank 11, and a water pump 12 is fixedly installed on the top of the cold water tank 11, the water inlet end of the water pump 12 extends into the cold water tank 11, and the water outlet end of the water pump 12 is fixedly connected to a water pipe 14, and the two water inlet pipes 13 are connected to the water pipe 14, and the lower template 2 and the upper template 3 are provided with a water outlet 15 on the side away from the water inlet pipe 13, and the two water outlets 15 are respectively connected to the bottom ends of the inside of the two cooling chambers 9, and a control valve is fixedly installed on the outside of the water outlet 15.

[0030] It should be noted that the device is provided with a control system for controlling the operation of the water pump 12, pumping the cold water inside the cold water tank 11 into the water pipe 14, and injecting the cold water into the cooling cavity 9 of the lower template 2 and the upper template 3 respectively through two water inlet pipes 13 connected to the water pipe 14. The cold water inside the cooling cavity 9 contacts the heat sink 10, and the multiple heat sinks 10 are connected to the heat conduction plate 8 for cooling.

[0031] An air inlet duct 18 is provided on one side of the lower template 2 and the upper template 3, and cooling channels 20 are opened in the two heat conducting plates 8. The ends of the two air inlet ducts 18 are respectively connected to one end of the two cooling channels 20, and an air outlet 19 is provided on the other side of the lower template 2 and the upper template 3, and the two air outlets 19 are respectively connected to the other ends of the two cooling channels 20.

[0032] It should be noted that the two air inlet pipes 18 are respectively placed in the cooling channels 20 on the two heat conducting plates 8 and finally discharged through the air outlet 19, which can quickly cool the heat conducting plates 8 and thus achieve the effect of quickly cooling the mold.

[0033] A fan 16 is fixedly installed on the top of the cold water tank 11. The air inlet end of the fan 16 is fixedly connected to an air inlet pipe 22, and the end of the air inlet pipe 22 passes through the cold water tank 11 and is connected to the outside. The air outlet end of the fan 16 is fixedly connected to a ventilation pipe 17, and the ends of the two air inlet pipes 18 are connected to the ventilation pipe 17.

[0034] It should be noted that by controlling the operation of the fan 16, the outside wind can be drawn into the air inlet pipe 22. The air inlet pipe 22 is located inside the cold water tank 11, so that the wind inside the air inlet pipe 22 is cooled by the cold water inside the cold water tank 11, and the cold air enters the ventilation pipe 17, and then the ventilation pipe 17 injects the cold air into the cooling channel 20 in the heat sink 18 through the air inlet pipe 18.

[0035] The cooling channel 20 is arranged in a serpentine structure, and the air inlet pipe 22 is arranged in a section inside the cold water tank 11 and is arranged in a plurality of connected S-shaped structures.

[0036] It should be noted that the cooling channel 20 is configured as a serpentine structure as a whole, so that the cooling channel 20 is distributed over the entire surface of the heat sink 8, so that after the cold air enters the cooling channel 20, it can be distributed over a large area of ​​the heat sink 8, thereby achieving rapid cooling of the heat sink 8, thereby achieving the purpose of cooling the mold; by configuring one end of the air inlet pipe 22 located inside the cold water tank 11 to be an S-shaped structure, the length of the air inlet pipe 22 located inside the cold water tank 11 is longer, so that the air can be cooled for a long time when transporting the air.

[0037] The water inlet pipe 13, the water passage pipe 14, the ventilation pipe 17 and the air inlet pipe 18 are all elastic hoses.

[0038] It should be noted that the water inlet pipe 13, the water pipe 14, the ventilation pipe 17 and the air inlet pipe 18 are all configured as elastic hoses, and the water inlet pipe 13, the water pipe 14, the ventilation pipe 17 and the air inlet pipe 18 all have a certain length, which can enable them to be better connected during the demoulding process to avoid the rupture of the pipes due to pulling.

[0039] A recovery tank 21 is connected to the top of the bottom plate 1 at one side away from the cold water tank 11 , and ends of the two water outlets 15 are located right above the recovery tank 21 .

[0040] It should be noted that the water in the cooling chamber 9 can be discharged to the recovery tank 21 for collection through the water outlet 15 .

[0041] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply 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 understood as a limitation on the present invention.

[0042] In addition, the terms "first", "second", "third" and "fourth" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first", "second", "third" and "fourth" may explicitly or implicitly include at least one of such features.

[0043] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0044] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A plastic injection mold with high cooling molding efficiency, comprising a bottom plate (1), a lower mold plate (2), an upper mold plate (3), a support seat (4) and a top plate (5), wherein the top of the bottom plate (1) is fixedly connected to the support seat (4), the top of the support seat (4) is fixedly connected to the lower mold plate (2), the top of the lower mold plate (2) is connected to the upper mold plate (3), and the top of the upper mold plate (3) is fixedly connected to the top plate (5), and an injection port is opened on the top of the top plate (5), characterized in that: It also includes a heat conducting plate (8), a heat sink (10), a water inlet pipe (13) and a water outlet (15); a lower mold cavity (6) is provided at the top of the lower mold plate (2); an upper mold cavity (7) is provided at the bottom of the upper mold plate (3); a heat conducting plate (8) is embedded and installed at the bottom of the inner wall of the lower mold cavity (6) and the top of the inner wall of the upper mold cavity (7); a cooling cavity (9) is provided in the lower mold plate (2) and the upper mold plate (3); a heat sink (10) is fixedly connected to the top of the inner wall of the cooling cavity (9) at an equidistant distance; the end of the heat sink (10) is fixedly connected to the heat conducting plate (8); one side of the lower mold plate (2) and the upper mold plate (3) are connected to a water inlet pipe (13), and the two water inlet pipes (13) are respectively connected to the inside of the two cooling cavities (9); One end of the top of the base plate (1) is fixedly connected to a cold water tank (11), and a water pump (12) is fixedly installed on the top of the cold water tank (11), the water inlet end of the water pump (12) extends into the cold water tank (11), the water outlet end of the water pump (12) is fixedly connected to a water pipe (14), the two water inlet pipes (13) are connected to the water pipe (14), the lower template (2) and the upper template (3) are both provided with a water outlet (15) on the side away from the water inlet pipe (13), and the two water outlets (15) are respectively connected to the bottom ends of the inside of the two cooling chambers (9), and a control valve is fixedly installed on the outside of the water outlet (15); An air inlet pipe (18) is provided on one side of the lower template (2) and the upper template (3), a cooling channel (20) is provided in each of the two heat conducting plates (8), the ends of the two air inlet pipes (18) are respectively connected to one end of the two cooling channels (20), and an air outlet (19) is provided on the other side of the lower template (2) and the upper template (3), and the two air outlets (19) are respectively connected to the other ends of the two cooling channels (20); A fan (16) is fixedly installed on the top of the cold water tank (11); an air inlet end of the fan (16) is fixedly connected to an air inlet pipe (22), and an end of the air inlet pipe (22) passes through the cold water tank (11) and is connected to the outside; an air outlet end of the fan (16) is fixedly connected to a ventilation pipe (17), and ends of the two air inlet pipes (18) are both connected to the ventilation pipe (17); The cooling channel (20) is arranged in a serpentine structure as a whole, and the air inlet pipe (22) is arranged in a section inside the cold water tank (11) in a plurality of connected S-shaped structures.

2. A plastic injection mold with high cooling molding efficiency according to claim 1, characterized in that: The water inlet pipe (13), the water passage pipe (14), the ventilation pipe (17) and the air inlet pipe (18) are all elastic hoses.

3. A plastic injection mold with high cooling molding efficiency according to claim 2, characterized in that: A recovery tank (21) is connected to the top of the bottom plate (1) on one side away from the cold water tank (11), and the ends of the two water outlets (15) are located directly above the recovery tank (21).

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