Injection mold and injection tool for preparing shell

Abstract

The utility model relates to the technical field of molds, and discloses an injection mold and an injection tool for preparing a shell, the injection mold comprises: a mold body having a cavity surface consistent with the outer surface of the shell; the electric heating structure is arranged in the mold body and is close to the cavity surface; and the cooling flow channel is arranged in the mold body, and cooling liquid is suitable for being introduced into the cooling flow channel. According to the utility model, the electric heating structure is arranged to heat the mold body, and the cavity surface can be heated to be higher than the glass transition temperature of a material, so that the temperature difference between a polymer melt and the cavity surface of the mold body is reduced, and the shearing and overturning of a spraying-free material during molding are reduced, thereby weakening the generation of weld marks and flow lines, achieving the highlight metallic feeling, and improving the product quality. And when the temperature of the cavity surface reaches the material glass transition temperature or above, the injection molding machine performs mold closing and starts injection molding, cooling liquid is introduced into the cooling runner for cooling after injection filling, after cooling is completed, shell preparation is completed, the mold is opened, and a shell part is taken out.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to an injection mold and an injection tooling for preparing a shell. Background Art

[0002] Air purifiers are increasingly used in home and office environments, and people's requirements for the appearance color and environmental protection of air purifiers are also getting higher and higher. The original preparation method was to first injection mold the casing and then spray it, which was neither environmentally friendly nor had stable quality. Therefore, this injection molding method has been abandoned.

[0003] The metal spray-free material is a modified plastic material in which a large number of aluminum pigments with a particle size of 10 - 30 μm in the shape of scales or silver dollars and pearlescent mica flakes are continuously and densely arranged between polymer chains, and a delicate and smooth metallic texture can be presented by direct injection molding.

[0004] However, since the aluminum pigments in this material are sensitive to heat shear and prone to change their orientation, after the orientation changes, the reflection angle changes, the gloss is inconsistent, and the injection molding weld line will turn black or flow marks will appear. Therefore, when screw posts, buckles or ribs are arranged on the inner wall of the part and the part is prepared using the metal spray-free material, the appearance surface will show flow marks, holes, and the injection molding weld line will turn black. Summary of the Utility Model

[0005] In view of this, the utility model provides an injection mold and an injection tooling for preparing the front shell of an air purifier to solve the problem that the appearance surface shows flow marks, holes, and the injection molding weld line turns black.

[0006] In a first aspect, the utility model provides an injection mold for preparing a shell, including:

[0007] A mold body having a cavity surface consistent with the outer surface of the shell;

[0008] An electric heating structure disposed in the mold body and close to the cavity surface;

[0009] A cooling channel disposed in the mold body, and a coolant is adapted to be introduced into the cooling channel.

[0010] Beneficial effects: The electric heating structure is provided to heat the mold body, and the cavity surface can be heated to a temperature above the glass transition temperature of the material (usually 135°C - 150°C), thereby reducing the temperature difference between the polymer melt and the cavity surface of the mold body, reducing the shear flipping of the spray-free material during molding, thereby weakening the generation of weld lines and flow marks, and achieving a high-gloss metallic feel. When the temperature of the cavity surface reaches above the glass transition temperature of the material, the injection molding machine closes the mold and starts injection molding. After injection filling, coolant is introduced into the cooling channel for cooling. After cooling is completed, the shell preparation is completed, the mold is opened, and the shell part is taken out.

[0011] In an alternative embodiment, the electric heating structure includes a plurality of heating rods arranged side by side and spaced apart, and the plurality of heating rods are evenly distributed.

[0012] Beneficial effects: The electric heating structure includes a plurality of heating rods arranged side by side and spaced apart, and the plurality of heating rods are evenly distributed, which can uniformly heat the cavity surface and improve the heating efficiency.

[0013] In an alternative embodiment, a plurality of mounting holes are provided in the mold body, and one of the heating rods is provided in each of the mounting holes.

[0014] Beneficial effects: By providing mounting holes in the mold body, it is convenient to install and fix the heating rods.

[0015] In an alternative embodiment, there is an air gap between the heating rod and the hole wall of the mounting hole, and the air gap is filled with a heat conduction structure.

[0016] Beneficial effects: Due to the manufacturing tolerances of the heating rod and the mounting hole, when the heating rod is installed in the mounting hole, there will inevitably be an air gap between the heating rod and the hole wall of the mounting hole. The air gap is filled with air, and the thermal conductivity of air is relatively low. Therefore, it will greatly hinder the transfer of heat from the heating rod to the cavity surface of the mold body, and thus greatly affect the heating efficiency of the mold body. Moreover, the heat accumulated in the air gap will increase the temperature of the heating rod and affect the service life of the heating rod. Therefore, filling the air gap with a heat conduction structure can transfer the heat of the heating rod to the mold body and improve the heating efficiency. During cooling, the cold in the cooling channel can also be quickly transferred to the heating rod to achieve the purpose of rapid cooling.

[0017] In an alternative embodiment, the heat conduction structure is thermal grease.

[0018] Beneficial effects: The heat conduction structure is thermal grease. The thermal grease is in a paste state, which is convenient to fill into the air gap between the heating rod and the mounting hole, and has good thermal conductivity.

[0019] In an alternative embodiment, the distance between the electric heating structure and the cavity surface is L1, and 10 mm ≤ L1 ≤ 20 mm.

[0020] Beneficial effects: The distance between the electric heating structure and the cavity surface is 10 mm to 20 mm. Since it is relatively close to the cavity surface, heat can be quickly transferred to the cavity surface, improving the preparation efficiency.

[0021] In an alternative embodiment, the distance between the cooling channel and the cavity surface is L2, and 30 mm ≤ L2 ≤ 40 mm.

[0022] Beneficial effects: The distance between the cooling channel and the cavity surface is 30 mm to 40 mm, and there is a certain distance from the electric heating structure. The distance between the cooling channel and the electric heating structure is shorter than the distance between the electric heating structure and the cavity surface, which can prevent the temperature of the cooling channel from rising too high during the rapid heating of the cavity surface by the electric heating structure and affecting the cooling efficiency.

[0023] In an alternative embodiment, the mold body is provided with a temperature sensor.

[0024] Beneficial effects: By providing a temperature sensor in the mold body, the temperature of the mold body can be detected, which is convenient for controlling the preparation process.

[0025] In a second aspect, the present invention also provides an injection molding tool for manufacturing a housing, including:

[0026] The injection mold as described above, with a temperature sensor provided on the mold body;

[0027] A coolant source, connected to the inlet of the cooling channel through a water inlet pipeline, and a water inlet pump is provided on the water inlet pipeline;

[0028] A cooling water tank, connected to the outlet of the cooling channel through a drainage pipeline, and a drainage valve and a drainage pump are provided on the drainage pipeline;

[0029] A controller, communicatively connected to the electric heating structure, the temperature sensor, the water inlet pump, the drainage valve, and the drainage pump.

[0030] Beneficial effects: The temperature sensor can detect the temperature of the mold body in real time. During preparation, first, the electric heating structure is powered on to heat the cavity surface to above the glass transition temperature of the material (usually 135°C - 150°C), thereby reducing the temperature difference between the polymer melt and the cavity surface of the mold body, reducing the shear and turnover of the spray-free material during molding, thus weakening the generation of weld lines and flow marks, and achieving a high-gloss metallic finish. When the temperature sensor detects that the temperature of the cavity surface reaches above the glass transition temperature of the material, the injection molding machine closes the mold and starts injection molding. After injection filling, the water inlet pump is controlled to open, and coolant is introduced into the cooling channel for cooling. When the cooling time reaches the preset time, the mold is opened, the housing part is taken out, and at the same time, the water inlet pump is closed, the drainage valve and the drainage pump are opened, and the coolant in the cooling channel is pumped back into the cooling water tank, and then the drainage valve and the drainage pump are closed.

[0031] In an alternative embodiment, the coolant source is a water temperature machine, the water temperature machine is connected to a water source through a water pipe, an inlet valve is provided on the water pipe, and the controller is communicatively connected to the inlet valve.

[0032] Beneficial effects: During preparation, first energize the electric heating structure to heat the cavity surface to a temperature above the glass transition temperature of the material (usually 135°C - 150°C), thereby reducing the temperature difference between the polymer melt and the cavity surface of the mold body, reducing the shear and turnover of the spray-free material during molding, thus weakening the generation of weld lines and flow marks, and achieving a high-gloss metallic finish. When the temperature sensor detects that the cavity surface temperature reaches above the glass transition temperature of the material, the injection molding machine closes the mold and starts injection molding. After injection filling, control the water inlet valve and water inlet pump to open, and the water temperature machine injects coolant into the cooling channels for cooling. When the cooling time reaches the preset time, open the mold and take out the shell part. At the same time, close the water inlet pump and water inlet valve, open the drain valve and drain pump, and pump the coolant in the cooling channels back into the cooling water tank. Then close the drain valve and drain pump. Description of the Drawings

[0033] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0034] Figure 1 Structural schematic diagram of an injection mold for preparing a shell according to an embodiment of the present invention;

[0035] Figure 2 For Figure 1 Front view of the injection mold for preparing the shell shown;

[0036] Figure 3 For Figure 2 A - A cross-sectional view of

[0037] Figure 4 Schematic diagram of an air gap formed between the heating rod and the mounting hole;

[0038] Figure 5 For Figure 4 B - B cross-sectional view of

[0039] Figure 6 Schematic diagram after the air gap between the heating rod and the mounting hole is filled with thermal conductive silicone grease;

[0040] Figure 7 For Figure 6 C - C cross-sectional view of

[0041] Figure 8 Structural schematic diagram of the front shell of an air purifier;

[0042] Figure 9 For Figure 8Rear view of the front shell of the air purifier shown;

[0043] Figure 10 For Figure 8 Front view of the front shell of the air purifier shown.

[0044] Description of reference numerals:

[0045] 1. Mold body; 101. Cavity surface; 102. Mounting hole; 2. Heating rod; 3. Cooling channel; 4. Air gap; 5. Thermal conductive silicone grease; 6. Temperature sensor; 7. Front shell of air purifier; 701. Thin-wall structure; 702. Rib; 703. Hole. Detailed implementation mode

[0046] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0047] Air purifiers are increasingly used in home and office environments, and people's requirements for the appearance color and environmental protection of air purifiers are also getting higher and higher. The original preparation method was to first injection mold the shell and then spray it, which was neither environmentally friendly nor had stable quality. Therefore, this injection molding method has been abandoned.

[0048] The metal spray-free material is a modified plastic material in which a large number of aluminum pigments with a particle size of 10 - 30 μm in the form of flaky or silver-dollar-shaped structures and pearlescent mica flakes are continuously and densely arranged between polymer chains, and a delicate and smooth metallic texture can be presented by direct injection molding.

[0049] However, since the aluminum pigments in this material are sensitive to heat shear and prone to change in orientation, after the orientation changes, the reflection angle changes, the gloss is inconsistent, and the injection molding weld line will turn black or show flow marks. Therefore, when screw posts, buckles or ribs 702 are arranged on the inner wall of the part and the part is prepared using the metal spray-free material, the appearance surface will show flow marks, holes 703, and the injection molding weld line will turn black.

[0050] The following combines Figures 1 to 10 , to describe the embodiments of the present utility model.

[0051] According to an embodiment of the present utility model, on the one hand, there is provided an injection mold for preparing a shell, including a mold body 1, an electric heating structure and a cooling channel 3.

[0052] Among them, the mold body 1 has a cavity surface 101 that is consistent with the outer surface of the shell; the electric heating structure is arranged inside the mold body 1 and close to the cavity surface 101; the cooling channel 3 is arranged inside the mold body 1, and a coolant is suitable for being introduced into the cooling channel 3.

[0053] In this embodiment, setting the electric heating structure can heat the mold body 1, and the cavity surface 101 can be heated to above the glass transition temperature of the material (usually 135°C - 150°C), thereby reducing the temperature difference between the polymer melt and the cavity surface 101 of the mold body 1, reducing the shear turning of the spray-free material during molding, thereby weakening the generation of weld lines and flow marks, and achieving a high-gloss metallic feel. When the temperature of the cavity surface 101 reaches above the glass transition temperature of the material, the injection molding machine closes the mold and starts injection molding. After injection filling, a coolant is introduced into the cooling channel 3 for cooling. After cooling is completed, the shell preparation is completed, the mold is opened, and the shell part is taken out.

[0054] Specifically, as Figure 3 shown, the cooling channel 3 is arranged on the side of the electric heating structure away from the cavity surface 101.

[0055] Specifically, in one embodiment, the shell is the front shell 7 of an air purifier. As Figures 8 to 10 , the inner wall of the front shell 7 of the air purifier is provided with a thin-walled structure 701, a rib 702, and a hole 703 for installing a display panel that need to be light-transmitting. Injection molding is carried out using a metal spray-free material, and the appearance can achieve a high-gloss and flow mark-free metallic texture. Using this injection mold to prepare the front shell 7 of the air purifier, specifically during preparation, first use the electric heating structure to heat the mold body 1, and heat the cavity surface 101 to above the glass transition temperature of the material (usually 135°C - 150°C), thereby reducing the temperature difference between the polymer melt and the cavity surface 101 of the mold body 1, reducing the shear turning of the spray-free material during molding, thereby weakening the generation of weld lines and flow marks, and achieving a high-gloss metallic feel. When the temperature of the cavity surface 101 reaches above the glass transition temperature of the material, the injection molding machine closes the mold and starts injection molding. After injection filling, a coolant is introduced into the cooling channel 3 for cooling. After cooling is completed, the front shell 7 of the air purifier is prepared, the mold is opened, and the front shell 7 part is taken out.

[0056] In one embodiment, the electric heating structure includes a plurality of heating rods 2 arranged side by side and at intervals, and the plurality of heating rods 2 are evenly distributed.

[0057] In this embodiment, the electric heating structure includes a plurality of heating rods 2 arranged side by side and at intervals, and the plurality of heating rods 2 are evenly distributed, which can uniformly heat the cavity surface 101 and improve the heating efficiency.

[0058] Specifically, during the preparation, multiple heating rods 2 are first used to heat the mold body 1, heating the cavity surface 101 to above the glass transition temperature of the material (usually 135°C - 150°C), thereby reducing the temperature difference between the polymer melt and the cavity surface 101 of the mold body 1, reducing the shear and turnover of the spray-free material during molding, thereby weakening the generation of weld lines and flow marks, achieving a high-gloss metallic finish. When the temperature of the cavity surface 101 reaches above the glass transition temperature of the material, the injection molding machine closes the mold and starts injection molding. After injection filling, coolant is introduced into the cooling channel 3 for cooling. After cooling is completed, the front shell 7 of the air purifier is prepared. Then the mold is opened, and the front shell 7 part of the air purifier is taken out.

[0059] In an embodiment not shown in the figure, the electric heating structure can be a heating plate.

[0060] In one embodiment, a plurality of mounting holes 102 are provided in the mold body 1, and one heating rod 2 is provided in each mounting hole 102.

[0061] In this embodiment, by providing the mounting holes 102 in the mold body 1, it is convenient to install and fix the heating rod 2.

[0062] In one embodiment, as Figures 4 to 7 , there is an air gap 4 between the heating rod 2 and the hole wall of the mounting hole 102, and the air gap 4 is filled with a heat-conducting structure.

[0063] In this embodiment, due to the manufacturing tolerances of the heating rod 2 and the mounting hole 102, when the heating rod 2 is installed in the mounting hole 102, there is inevitably an air gap 4 between the heating rod 2 and the hole wall of the mounting hole 102. The air gap 4 is filled with air, and the thermal conductivity of air is relatively low. Therefore, it will greatly hinder the transfer of heat from the heating rod 2 to the cavity surface 101 of the mold body 1, and thus greatly affect the heating efficiency of the mold body 1. Moreover, the heat accumulated in the air gap 4 will increase the temperature of the heating rod 2 and affect the service life of the heating rod 2. Therefore, filling the air gap 4 with a heat-conducting structure can transfer the heat of the heating rod 2 to the mold body 1, improving the heating efficiency. During cooling, the cold in the cooling channel 3 can also be quickly transferred to the heating rod 2 to achieve the purpose of rapid cooling.

[0064] In one embodiment, the heat-conducting structure is heat-conducting silicone grease 5.

[0065] In this embodiment, the heat-conducting structure is heat-conducting silicone grease 5. The heat-conducting silicone grease 5 is in a paste state, which is convenient to be filled into the air gap 4 between the heating rod 2 and the mounting hole 102, and has good heat-conducting performance.

[0066] Specifically, the thermal conductive silicone grease 5, also known as heat dissipation paste and thermal conductive paste, is a highly thermally conductive insulating silicone material. It also has a low oil separation degree (tending to zero), and is resistant to high and low temperatures, water, ozone, and weather aging. It can maintain the paste state during long-term use at a temperature of -50°C to +230°C.

[0067] In an embodiment not shown in the figure, the thermal conductive structure can also be thermal conductive silica gel, graphite, thermal conductive gasket, thermal conductive potting glue, etc.

[0068] In one embodiment, the distance between the electric heating structure and the cavity surface 101 is L1, where 10mm ≤ L1 ≤ 20mm.

[0069] In this embodiment, the distance between the electric heating structure and the cavity surface 101 is 10mm to 20mm. Since it is relatively close to the cavity surface 101, heat can be quickly transferred to the cavity surface 101, improving the preparation efficiency.

[0070] Specifically, in one embodiment, the distance between the electric heating structure and the cavity surface 101 is 10mm.

[0071] Specifically, in one embodiment, the distance between the electric heating structure and the cavity surface 101 is 15mm.

[0072] Specifically, in one embodiment, the distance between the electric heating structure and the cavity surface 101 is 20mm.

[0073] In one embodiment, the distance between the cooling channel 3 and the cavity surface 101 is L2, where 30mm ≤ L2 ≤ 40mm.

[0074] In this embodiment, the distance between the cooling channel 3 and the cavity surface 101 is 30mm to 40mm. Since it is at a certain distance from the electric heating structure, and the distance between the cooling channel 3 and the electric heating structure is shorter than the distance between the electric heating structure and the cavity surface 101, it can prevent the temperature of the cooling channel 3 from rising too high during the rapid heating of the cavity surface 101 by the electric heating structure, thus affecting the cooling efficiency.

[0075] Specifically, in one embodiment, the distance between the cooling channel 3 and the cavity surface 101 is 30mm.

[0076] Specifically, in one embodiment, the distance between the cooling channel 3 and the cavity surface 101 is 35mm.

[0077] Specifically, in one embodiment, the distance between the cooling channel 3 and the cavity surface 101 is 40mm.

[0078] Specifically, in one embodiment, the distance between the electric heating structure and the cavity surface 101 is 10mm, and the distance between the cooling channel 3 and the cavity surface 101 is 30mm.

[0079] Specifically, in one embodiment, the distance between the electric heating structure and the cavity surface 101 is 15 mm, and the distance between the cooling channel 3 and the cavity surface 101 is 35 mm.

[0080] Specifically, in one embodiment, the distance between the electric heating structure and the cavity surface 101 is 20 mm, and the distance between the cooling channel 3 and the cavity surface 101 is 40 mm.

[0081] In one embodiment, the mold body 1 is provided with a temperature sensor 6.

[0082] In this embodiment, by providing the temperature sensor 6 on the mold body 1, the temperature of the mold body 1 can be detected, which is convenient for controlling the preparation process.

[0083] According to an embodiment of the present invention, on the other hand, an injection molding tool for manufacturing a housing is further provided, including: the injection mold provided in the above embodiment, a coolant source, a cooling water tank, and a controller.

[0084] Wherein, a temperature sensor 6 is provided on the mold body 1; the coolant source is connected to the inlet of the cooling channel 3 through a water inlet pipeline, and a water inlet pump is provided on the water inlet pipeline; the cooling water tank is connected to the outlet of the cooling channel 3 through a drainage pipeline, and a drainage valve and a drainage pump are provided on the drainage pipeline; the controller is communicatively connected to the electric heating structure, the temperature sensor 6, the water inlet pump, the drainage valve, and the drainage pump.

[0085] In this embodiment, the temperature sensor 6 can detect the temperature of the mold body 1 in real time. During preparation, first, the electric heating structure is powered on to heat the cavity surface 101 to a temperature above the glass transition temperature of the material (usually 135°C - 150°C), thereby reducing the temperature difference between the polymer melt and the cavity surface 101 of the mold body 1, reducing the shear and turnover of the spray-free material during molding, thereby weakening the generation of weld lines and flow marks, and achieving a high-gloss metallic finish. When the temperature sensor 6 detects that the temperature of the cavity surface 101 reaches above the glass transition temperature of the material, the injection molding machine closes the mold and starts injection molding. After injection filling, the water inlet pump is controlled to open, and coolant is introduced into the cooling channel 3 for cooling. When the cooling time reaches the preset time, the mold is opened, the housing part is taken out, at the same time, the water inlet pump is closed, the drainage valve and the drainage pump are opened, and the coolant in the cooling channel 3 is pumped back into the cooling water tank, and then the drainage valve and the drainage pump are closed.

[0086] In one embodiment, the coolant source is a water temperature machine, the water temperature machine is connected to a water source through a water pipe, and a water inlet valve is provided on the water pipe. The controller is communicatively connected to the water inlet valve.

[0087] In this embodiment, during preparation, the electro-heating structure is first powered on to heat the cavity surface 101 to a temperature above the glass transition temperature of the material (usually 135°C - 150°C), thereby reducing the temperature difference between the polymer melt and the cavity surface 101 of the mold body 1, reducing the shear turning of the spray-free material during molding, thereby weakening the generation of weld lines and flow marks, and achieving a high-gloss metallic feel. When the temperature sensor 6 detects that the temperature of the cavity surface 101 reaches above the glass transition temperature of the material, the injection molding machine closes the mold and starts injection molding. After injection filling, the water inlet valve and the water inlet pump are controlled to open, and the water temperature machine passes coolant into the cooling channel 3 for cooling. When the cooling time reaches the preset time, the mold is opened, and the housing part is taken out. At the same time, the water inlet pump and the water inlet valve are closed, the drain valve and the drain pump are opened, and the coolant in the cooling channel 3 is pumped back into the cooling water tank. Then the drain valve and the drain pump are closed.

[0088] In an alternative embodiment, the coolant source may include a water tank and a semiconductor refrigeration device. The semiconductor refrigeration device is arranged in the water tank. The water tank is connected to the inlet of the cooling channel 3 through a water inlet pipeline, and a water inlet pump is provided on the water inlet pipeline.

[0089] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. An injection mold for preparing a housing, characterized in that: include: A mold body (1) having a mold cavity surface (101) that is consistent with the outer surface of the shell; An electric heating structure is arranged in the mold body (1) and close to the mold cavity surface (101); A cooling channel (3) is arranged in the mold body (1), and the cooling channel (3) is suitable for passing a cooling liquid; The electric heating structure comprises a plurality of heating rods (2) arranged side by side and at intervals, the plurality of heating rods (2) being evenly distributed, a plurality of mounting holes (102) being provided in the mold body (1), each mounting hole (102) being provided with a heating rod (2), an air gap (4) being provided between the heating rod (2) and the hole wall of the mounting hole (102), and the air gap (4) being filled with a heat-conducting structure.

2. The injection mold for preparing a housing according to claim 1, characterized in that: The heat-conducting structure is heat-conducting silicone grease (5).

3. The injection mold for preparing a housing according to any one of claims 1 to 2, characterized in that: The distance between the electric heating structure and the cavity surface (101) is L1, 10 mm ≤ L1 ≤ 20 mm.

4. The injection mold for preparing a housing according to any one of claims 1 to 2, characterized in that: The distance between the cooling channel (3) and the cavity surface (101) is L2, 30 mm ≤ L2 ≤ 40 mm.

5. The injection mold for preparing a housing according to any one of claims 1 to 2, characterized in that: The mold body (1) is provided with a temperature sensor (6).

6. An injection molding tool for preparing a housing, characterized in that: include: The injection mold according to any one of claims 1 to 5, wherein a temperature sensor (6) is provided on the mold body (1); A coolant source connected to the inlet of the cooling channel (3) via a water inlet pipeline, wherein the water inlet pipeline is provided with a water inlet pump; A cooling water tank connected to the outlet of the cooling channel (3) via a drainage pipeline, wherein the drainage pipeline is provided with a drainage valve and a drainage pump; A controller is communicatively connected with the electric heating structure, the temperature sensor (6), the water inlet pump, the drainage valve and the drainage pump.

7. The injection molding tool for preparing a housing according to claim 6, characterized in that: The cooling liquid source is a water temperature machine, the water temperature machine is connected to the water source through a water pipe, a water inlet valve is provided on the water pipe, and the controller is in communication connection with the water inlet valve.

Images