KR20110009424A - Injection molding apparatus having heat shunting reinforcement plate and method of using the same - Google Patents

Abstract

PURPOSE: An injection molding apparatus having a heat shunting reinforcement plate and a control method thereof are provided to reduce the time for heating a heating plate because the heat from a heat shunting reinforcement plate is transferred to the heating plate through conduction. CONSTITUTION: An injection molding apparatus comprises a first mold(20) and a second mold. The second mold comprises a heating plate(30), a heat shunting reinforcement plate(40), and a cooling plate(50). The heating plate has a first side facing a first cavity side of a first mold, a second side separate from the first side, and a second cavity side forming a cavity with the first cavity side. The heat shunting reinforcement plate has a first side connected to the second side of the heating plate and a second side separate from the first side. The coefficient of thermal conductivity of the heat shunting reinforcement plate is greater than that of the heating plate. The cooling plate has a cooling side which is connected to the second side of the heat shunting reinforcement plate. The heating unit is installed between the first side of the heating plate and the second side of the heat shunting reinforcement plate.

Description

Injection molding apparatus with thermal reinforcing plate and control method {INJECTION MOLDING APPARATUS HAVING HEAT SHUNTING REINFORCEMENT PLATE AND METHOD OF USING THE SAME}

The present invention relates to injection molding, and more particularly to heating and cooling an injection molding apparatus.

Injection molding of synthetic resin or metal refers to obtaining a cavity-shaped molded product by injecting and cooling a molten synthetic resin or metal between a fixed mold (cavity mold) having a cavity and a movable mold (core mold) having a core.

In injection molding, when the molten material is injected, the temperature of the mold is preferably the same as that of the molten material. It can improve the flow of injected material and the transferability of the pattern on the cavity surface and reduce the deformation caused by residual stress after the molten material is hardened.

Because. In addition, after the injection of the molten material is completed, it is preferable to lower the temperature of the mold so that the completed material is cooled quickly to shorten the cycle time of the injection molding to increase productivity.

However, increasing the temperature of the mold improves fluidity and transferability, but it takes a lot of time to cool down, resulting in a long cycle time of injection molding. In order to shorten the cycle time, if the mold is made small in size to cool rapidly, There is a problem in that the rigidity is weak due to deformation or poor durability of the product.

As a method for improving this problem, Patent Publication Nos. 0644920, 0644926 and 0644922 disclose an injection molding apparatus having a core mold separated into an intermediate core mold plate and a core mold support plate. With this injection molding apparatus, the intermediate core mold plate is rapidly heated to an appropriate temperature using an electric heater, and at the same time, the core mold support plate is cooled to an appropriate temperature, the mold is molded, and the injection material is injected to form the mold. do. In the process of molding the mold, the intermediate core mold plate is cooled while being in contact with the core mold support plate which has been cooled in advance, thereby enabling rapid cooling of the intermediate core mold plate. Therefore, as soon as injection of the injection material is completed, the injection material starts to solidify, thereby reducing the injection molding cycle time.

However, the conventional injection molding apparatus having a separated core mold has a problem that the durability of the separated intermediate core mold plate is weak, and there is also a problem that a temperature deviation occurs for each position of the intermediate core mold. And there is a demand to further reduce the cycle time by increasing the heating speed of the core mold.

An object of the present invention is to provide an injection molding apparatus and a method of controlling the same.

According to the present invention, an injection molding apparatus comprising a first mold including a first cavity surface and a second mold including a heating means, wherein the second mold is separated from the first surface and the first surface. A heating plate having a second surface, the first surface facing the first cavity surface and including a second cavity surface which forms a cavity together with the first cavity surface; A heat shunting reinforcement plate having a first surface coupled to the second surface of the heating plate and a second surface spaced apart from the first surface and having a higher thermal conductivity than the heating plate; And a cooling plate having a cooling surface coupled with the second surface of the thermally reinforcing plate, wherein the heating means is installed between the first surface of the heating plate and the second surface of the thermally reinforcing plate. An injection molding apparatus having a heat deflection reinforcing plate is provided.

The injection molding apparatus further includes a first mold including a first cavity surface and a second mold including a heating means, wherein the second mold includes a first surface and a second surface spaced apart from the first surface. A heating plate including a second cavity surface facing the first cavity surface and forming a cavity together with the first cavity surface; A heat deflection reinforcing plate having a first surface coupled to the second surface of the heating plate and a second surface spaced apart from the first surface, wherein the thermal conductivity reinforcing plate has a larger thermal conductivity than the heating plate; The thermally reinforcing plate is moved between a first position in contact with the second surface of the thermally reinforcing plate and a second position away from the second surface of the thermally reinforcing plate based on the position of the thermally reinforcing plate; And a cooling plate having a cooling surface in a direction in contact with the second surface of the heating means, wherein the heating means is installed between the first surface of the heating plate and the second surface of the thermal deflection reinforcing plate. An injection molding apparatus having a reinforcing plate is provided.

The apparatus may further include a heat transfer member installed on at least one of the second surface of the heat transfer reinforcing plate or the cooling surface of the cooling plate to improve heat transfer between the heat transfer reinforcing plate and the cooling plate. An injection molding apparatus having a heat redirecting reinforcing plate is provided.

According to another aspect of the present invention, in the injection molding method, the injection molding method includes a first mold including a first cavity surface and a second mold including heating means, wherein the second mold includes the first surface and the same. A heating plate having a second surface away from the first surface, the first surface facing the first cavity surface, the heating plate including a second cavity surface forming a cavity together with the first cavity surface; A heat deflection reinforcing plate having a first surface coupled to the second surface of the heating plate and a second surface spaced apart from the first surface, wherein the thermal conductivity reinforcing plate has a larger thermal conductivity than the heating plate; And a cooling plate having a cooling surface coupled with the second surface of the thermally reinforcing plate, wherein the heating means is installed between the first surface of the heating plate and the second surface of the thermally reinforcing plate. Providing an injection molding apparatus having a heat deflection reinforcing plate; Moving the heating plate in the first mold direction to form the cavity between the first cavity surface and the second cavity surface; Operating the heating means to heat a heating plate; Injecting molten injection material into the cavity; Cooling the cooling plate to improve the heat diffusion from the heat transfer reinforcing plate to the cooling plate; injection molding method comprising a.

In addition, the injection molding method includes a first mold including a first cavity surface and a second mold including heating means, wherein the second mold includes a second mold spaced apart from the first surface and the first surface thereof. A heating plate having a surface, the first surface facing the first cavity surface, the heating plate including a second cavity surface forming a cavity together with the first cavity surface; A heat deflection reinforcing plate having a first surface coupled to the second surface of the heating plate and a second surface spaced apart from the first surface, wherein the thermal conductivity reinforcing plate has a larger thermal conductivity than the heating plate; The thermally reinforcing plate is moved between a first position in contact with the second surface of the thermally reinforcing plate and a second position away from the second surface of the thermally reinforcing plate based on the position of the thermally reinforcing plate; And a cooling plate having a cooling surface in a direction in contact with a second surface of the heating plate, wherein the heating means is installed between the first surface of the heating plate and the second surface of the thermal deflection reinforcing plate. Providing an injection molding apparatus having a reinforcing plate; Moving the heating plate in the first mold direction to form the cavity between the first cavity surface and the second cavity surface; Operating the heating means to heat a heating plate; Injecting molten injection material into the cavity; Moving the cooling plate to the first position such that the second surface of the heat redirecting plate is in contact with the cooling surface of the cooling plate; Cooling the cooling plate to improve the heat diffusion from the heat transfer reinforcing plate to the cooling plate; injection molding method comprising a.

An injection molding apparatus having a heat shunting reinforcement plate and a control method thereof according to the present invention have the following effects.

First, the heat deflection reinforcing plate having a higher thermal conductivity than the heating plate is heated faster than the heating plate. Therefore, the heat redirecting plate serves as a heat source for transferring heat to the heating plate through conduction. This reduces the time for the heating plate to reach a temperature suitable for injection molding. The cycle time is thus reduced and productivity is improved.

Second, as described above, since the heat deflection reinforcing plate acts as an auxiliary heat source, it is possible to reduce the positional deviation of the temperature of the heating plate. If there is no heat reinforcing plate, the temperature deviation of the heating plate located near and far from the position where the heating means is installed, but this deviation is reduced when the heat reinforcing plate is installed.

Third, the heat redirecting reinforcing plate shortens the heating time of the heating plate and at the same time reinforces it, thereby improving durability of the heating plate.

Fourth, when the cooling plate and the heat reinforcing plate is separated from the heat reinforcing plate and the cooling plate in the step of heating the heating plate, the cooling of the heat reinforcing plate by the cooling plate is blocked, so that faster heating is possible. Also, faster cooling is possible.

Fifth, when the heat transfer member is installed between the cooling plate and the heat transfer reinforcing plate, it is possible to cool the heat transfer reinforcement plate more quickly.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, embodiments of the present invention may be modified in many different forms, and the scope of the present invention should not be construed as being limited to the embodiments described below. The embodiments of the present invention are provided to more completely explain the present invention to those skilled in the art.

1 is a block diagram schematically showing an injection molding apparatus having a heat shunting reinforcement plate according to a first embodiment of the present invention. As shown in FIG. 1, the injection part is a portion for injecting material for molding into the cavity, and includes a screw 124 installed inside the heating cylinder 122 and the heating cylinder 122, and the screw 124 is rotated. It is provided with a hydraulic motor 120. In addition, a hydraulic cylinder 110 is provided to move the second mold fixing plate 60. In addition, the first mold 20 is fixed to the first mold fixing plate 10 and the first mold fixing plate 10 is provided to be in close contact with the heating cylinder 122 during injection and melted in the cavity through the injection passage 23 Injection material is injected.

The inside of the heating cylinder 122, the screw 124 is installed in the longitudinal direction of the heating cylinder 122, one side is connected to the screw 124, the hydraulic motor 120 for rotating the screw 124 is It is installed. In addition, the injection control unit 310 is installed to be electrically connected to the hydraulic cylinder 110, the hydraulic motor 120 and the mold temperature control unit 320, the mold temperature control unit 320 is the cooling water installed in the cooling plate 50 Electrically connected to the valve 322 for controlling the flow of the cooling water flowing in the pipe 53, the heat transfer heater 33 installed on the heating plate 30, and the temperature sensor 80 installed on the heating plate 30. It is installed as possible.

FIG. 2 is a schematic view showing a state in which a mold of the injection molding apparatus having a heat deflection reinforcing plate shown in FIG. 1 is opened, and FIG. 3 is a schematic view showing a state in which the mold shown in FIG.

2, a first cavity surface 21 into which molten injection material is injected is formed in the first mold 20, and an injection passage 23 of molten injection material is formed in the first cavity surface 21. Is connected. In addition, the first mold 20 is formed with a guide hole 22 for inserting the guide pin 51.

The second mold includes a heating plate 30, a heat deflection reinforcing plate 40, and a cooling plate 50. The second cavity surface 31 is formed on the surface facing the first cavity surface 21 of the heating plate 30. Referring to FIG. 3, the second cavity surface 31 forms a cavity C into which molten injection material is injected together with the first cavity surface 21. The heat deflection reinforcing plate 40 is coupled to the heating plate 30, and a plurality of grooves 36 are formed at the interface where the heat plate 30 and the heat deflection reinforcing plate 40 are coupled to each other. An electric heater 33 for heating the heating plate 30 and the heat deflection reinforcing plate 40 is inserted in the interior 36. The heat transfer heater 33 is configured such that an insulation coating surrounds heating wires such as nichrome, tungsten, and titanium series. In addition, in order to increase the contact area between the heating plate 30 and the heat transfer reinforcing plate 40 and to promote heat transfer at the same time, in the space between the groove 36 into which the heat transfer heater 33 is inserted and the heat transfer heater 33. The copper member 37 is filled. The heating heater 33 may use one heating wire or may be installed using a plurality of heating wires. In addition, the heating plate 30 is provided with a temperature sensor 80. The temperature sensor 80 measures the temperature of the heating plate 30 in real time and transmits it to the mold temperature controller 320 to appropriately control the amount of heat generated by the heat transfer heater 33 to maintain the temperature of the heating plate 30 in a certain range. To be able. Although one temperature sensor 80 is shown in this embodiment, a plurality of temperature sensors may be provided as necessary. In particular, when it is desired to control the heating value of the heat transfer heater to have a different temperature for each part of the mold surface, it is preferable to install a temperature sensor for each part of the desired temperature.

The thermal reinforcing plate 40 is made of a material having a higher thermal conductivity than the heating plate 30. For example, it consists of aluminum, copper, or an alloy containing them. The thermal reinforcing plate 40 serves to shorten the heating time of the heating plate 30 and to uniformly heat the heating plate 30. In addition, it serves to reinforce the thin heating plate 30. Hereinafter, referring to FIG. 4, the role of the heat deflection reinforcing plate 40 will be described in detail. When the electric power is supplied to the heat transfer heater 33, the temperature of the heating plate 30 and the heat conversion reinforcing plate 40 increases while the heat transfer heater 33 generates heat. In this case, since the thermal conductivity coefficient of the thermally reinforcing plate 40 is greater, the temperature of the thermally reinforcing plate 40 rises faster than the heating plate 30. As a result, a temperature difference occurs at the boundary between the heat deflection reinforcing plate 40 and the heating plate 30, and as shown in FIG. Thermal conduction is made in the direction of the low heating plate 30. That is, the heat redirecting plate 40 also acts as a kind of heat source. Therefore, it is possible to raise the temperature of the heating plate 30 more quickly than when the heat redirecting reinforcing plate 40 is not used. In addition, as shown in FIG. 4, when the heat deflection reinforcing plate 40 is not used, a deviation occurs in the surface temperature Ts of the heating plate 30 depending on the distance from the heat transfer heater 33. When the heat deflection reinforcing plate 40 is used, since the portion far from the heat transfer heater 33 is also heated by heat conducted from the heat deflection reinforcing plate 40, the deviation is reduced. Of course, if more time passes, even if there is no heat deflection reinforcing plate 40, the variation of the surface portion temperature (Ts) is reduced, but by using the heat deflection reinforcing plate 40 can be shortened the time. As a result, the use of the thermally reinforcing plate 40 shortens the time for the second cavity surface 31 formed on the heating plate 30 to reach a temperature distribution suitable for injection molding. As a result, the cycle time is reduced. It works.

The cooling plate 50 is provided with cooling means for maintaining the cooling plate 50 at a constant temperature so as to cool the heat redirecting plate 40 in contact with the heat redirecting plate 40. In the present embodiment, the cooling means includes a cooling water tank, a pump for circulating the cooling water, and a cooling water pipe 53 formed inside the cooling plate 50. Cooling water pipe 53 is connected in the cooling plate 50, the side of the cooling plate 50 is formed with inlet port and outlet port not shown. Guide pins 51 are provided on the cooling plate. The guide pin 51 is inserted into the guide hole 22 formed in the first mold 20 through the heat transfer reinforcing plate 40 and the heating plate 30.

Hereinafter, with reference to Figure 10, the operation of the injection molding apparatus having a heat redirecting plate according to the first embodiment will be described. A method of manufacturing an injection molded article using the mold apparatus according to the present embodiment is as follows.

The electric heating heater 33 is supplied with current to heat the heating plate 30 and the heat deflection reinforcing plate 40. The heated heat reinforcing plate 40 transfers heat to the heating plate 30 so that the heating plate 30 is heated quickly and uniformly. At the same time, in the state shown in FIG. 1, in which the mold apparatus 100 of this embodiment is installed in the injection molding machine, the first mold 20 and the heating plate are moved by moving the second mold fixing plate 60 in the left direction (to the cavity mold side) in the drawing. Yite 30 is in close contact. After moving the second mold fixing plate 60 to bring the first mold 20 and the heating plate 30 into close contact with each other, the heating plate 30 is heated, or after the heating plate 30 is heated, the second mold fixing plate ( The first mold 20 and the heating plate 30 may be brought into close contact with each other by moving 60.

When the heating plate 30 reaches a temperature suitable for injection, the molten injection material is injected into the cavity C formed as shown in FIG. 3, and the power source of the heat transfer heater 33 is turned off during the injection or when the injection is completed. Block it. At the same time, the cooling water flows to the cooling water pipe 53 of the cooling plate 50 to cool the cooling plate 50 to maintain the temperature necessary for efficient cooling. When the injection is completed and the solidification of the injection material is completed, the cooling of the cooling plate 50 is stopped and the second mold fixing plate 60 is moved backwards (to the right in the figure) so that the guide pin 51 guides. To be separated from (22). The injection molded product is removed from the cavity C, and the above process is repeated to perform injection.

5 is a schematic view showing a state in which a mold of an injection molding apparatus having a heat deflection reinforcing plate according to a second embodiment of the present invention is opened, and FIG. 6 is a heat deflection reinforcing plate according to a third embodiment of the present invention. It is a schematic diagram which shows the state in which the metal mold | die of the provided injection molding apparatus was opened. 5 and 6 differ from the embodiment shown in FIGS. 2 and 3 in the position of the electric heater. The installation position of the heat transfer heater may be changed according to the characteristics of the injection material to be molded or the shape of the injection molded product.

As shown in FIG. 5, when the electrothermal heater 33 is installed on the heating plate 30, there is an advantage that the temperature of the heating plate 30 can be raised more quickly. As shown in FIG. 6. In the case of installing the heat transfer heater 33 on the heat transfer reinforcing plate 40, there is an advantage that the temperature of the heating plate 30 can be made more uniform.

FIG. 7 is a schematic view showing a mold in a mold of the injection molding apparatus having a heat deflection reinforcing plate according to a fourth embodiment of the present invention, and FIG. 8 is a schematic view showing a mold in the mold shown in FIG. 7. . The present embodiment differs from the first embodiment in that the heat redirecting plate 40 and the cooling plate 50 are separated. In addition, since the cooling plate 50 is separated, the cooling water pipe 53 is separated from the cooling surface of the cooling plate 50. The cross section of the cooling water pipe 53 is circular unlike the first embodiment, but the cooling water pipe 53 having the same shape as the first embodiment may be used. The same parts as those in the first embodiment will be denoted by the same reference numerals, and the description thereof will be omitted.

In this embodiment, the coil spring 90 is inserted into the guide pin 51 between the heat transfer reinforcing plate 40 and the cooling plate 50. The coil spring 90 causes the heat transfer reinforcing plate 40 and the cooling plate 50 to be separated by elasticity when the cooling plate 50 moves backward to open the cavity, and thus the cooling spring 50 is separated by the cooling plate 50. The cooling plate is blocked and the heating plate 30 and the heat deflection reinforcing plate 40 are rapidly heated by the heat of the heat transfer heater 33. In particular, as shown in FIG. 8, after the molten injection material is injected into the cavity C formed by closely contacting the heat redirecting plate 30 to the first mold 20, the cooling effect of the heating plate 30 is applied. In order to increase the heat transfer reinforcing plate 40 and the cooling plate 50 is preferably to be in close contact with the separation surface completely. Therefore, the coil spring 90 is inserted into the guide pin 51 and installed, and as shown in FIG. 8, when the cooling plate 50 moves and contacts the heating plate 30, the coil spring 90 guides the guide pin. The 51 is completely inserted into the annular groove 54 of a constant depth formed around the fixed cooling plate 50.

Hereinafter, with reference to FIG. 11, the operation of the injection molding apparatus having the heat deflection reinforcing plate according to the fourth embodiment will be described. First, the electric heating heater 33 is supplied with current to heat the heating plate 30 and the heat deflection reinforcing plate 40. Cooling water continues to flow into the cooling water pipe 53 of the cooling plate 50 to cool the cooling plate 50 to maintain the temperature necessary for efficient cooling. In the present embodiment, since the heat deflection reinforcement plate 40 and the cooling plate 50 are separated, the heating of the heating plate 30 and the heat deflection reinforcement plate 40 and cooling of the cooling plate 50 may be simultaneously performed. have. Next, when the heating plate 30 reaches a temperature suitable for injection, in the state shown in FIG. 7 in which the mold apparatus 400 of the present embodiment is installed in the injection molding machine, the second mold fixing plate in the left direction (to the cavity mold side) in the drawing. By moving the 60, the first mold 20 and the heating plate 30, the heat transfer reinforcing plate 40 and the cooling plate 50 are in close contact with each other. Immediately, the molten injection material is injected into the cavity C formed as shown in FIG. 8, and the power supply of the heat transfer heater 33 is cut off during the injection or when the injection is completed. When the injection is completed and the solidification of the injection material is completed, the second mold fixing plate 60 is moved rearward (to the right in the figure) so that the guide pin 51 is separated from the guide hole 22. At this time, the thermal reinforcing plate 40 is separated from the cooling plate 50 by the restoring force of the coil spring 90, the cooling is cut off and at the same time the power is supplied to the heat transfer heater 33, the heating plate 30 is heated. The injection molded product is removed from the cavity C, and the above process is repeated to perform injection.

When the mold apparatus according to the present embodiment is used, the heating plate 30 and the heat deflection reinforcing plate 40 are heated by heating means before molding to maintain a temperature suitable for injection molding, and the cooling plate 50 is cooled to heat transfer. When the contact with the reinforcing plate 40 is in contact with the reinforcement plate 40 to maintain a state that can rapidly cool, injection molding can be performed while rapidly cooling the heat conversion reinforcement plate 40 with the cooling plate 50 after molding. Will be. Therefore, when the molten injection material is injected, the temperature of the second cavity surface 31 is properly maintained to ensure excellent fluidity and transferability, and the mold can be rapidly cooled at the completion of the injection, thereby improving cycle time of injection molding. You can shorten it. In particular, when the heating means can control a plurality of electric heaters independently, the mold surface is set to a different temperature for each part, and the injection molded product is appropriately controlled to be deformed due to residual stress when cooling, thereby forming a high quality molded product. Cycle time can be further reduced by controlling the cooling rate.

9 is a schematic diagram showing a state in which a mold of an injection molding apparatus having a heat deflection reinforcing plate according to a fifth embodiment of the present invention is opened. The fifth embodiment is different from the fourth embodiment in that the heat transfer member 70 is installed on the surface of the heat transfer reinforcing plate 40 facing the cooling plate 50. The heat transfer member 70 is installed to quickly cool the heat transfer reinforcing plate 40.

The heat transfer member 70 is a soft metal having a hardness lower than that of the heat transfer reinforcing plate 40, and preferably, a metal selected from gold, silver, copper, tin, lead, aluminum, or an alloy including the selected metal. In addition, the heat transfer member 70 is a gel heat transfer material having a decomposition temperature of 180 ° C. or higher, and the heat transfer material is preferably lubricating grease.

The present invention has been described in detail with reference to embodiments, but the present invention is not limited to the above embodiments, and many modifications can be made by those skilled in the art within the technical idea of the present invention. Is obvious.

For example, the heat transfer member is described as being installed on the side facing the cooling plate of the heat transfer reinforcing plate, but the heat transfer member may be installed on the side facing the heat transfer reinforcement plate of the cooling plate, or may be installed on both sides.

In addition, it has been described that the cooling water pipe is installed in the cooling plate, but it is also possible to form the cooling water channel in the cooling plate itself without installing a separate pipe.

In addition, in the present exemplary embodiment, the heat transfer reinforcing plate and the cooling plate are coupled to and separated from each other by using the guide pin and the coil spring, but other means such as a hydraulic cylinder may be used.

In addition, in the present embodiments, only the second mold has been described as including a heating plate, a heat deflection reinforcing plate, and a cooling plate, but the first mold is configured in the same form, or both the first mold and the second mold are the same form. It is also possible to configure.

In addition, although the eject pins for separating the injection-molded product from the mold are not shown in the present embodiments, an eject pin for ejecting the molded product from the mold in the case of a product in which the product is not naturally released from the mold is shown. Must be installed.

1 is a block diagram schematically showing an injection molding apparatus having a heat deflection reinforcing plate according to a first embodiment of the present invention.

Figure 2 is a schematic diagram showing a state in which the mold of the injection molding apparatus having a heat redirecting plate shown in FIG.

3 is a schematic view showing a state in which the mold shown in FIG.

4 is a view for explaining the temperature distribution of the surface of the heating plate of the mold shown in FIG.

5 is a schematic view showing a state in which a mold of an injection molding apparatus having a heat deflection reinforcing plate according to a second embodiment of the present invention is opened.

Figure 6 is a schematic diagram showing a state in which the mold of the injection molding apparatus having a heat redirecting reinforcing plate according to a third embodiment of the present invention is opened

7 is a schematic view showing a state in which a mold of an injection molding apparatus having a heat deflection reinforcing plate according to a fourth embodiment of the present invention is opened.

8 is a schematic view showing a state in which the mold shown in FIG. 7 is molded;

9 is a schematic view showing a state in which a mold is opened in an injection molding apparatus having a heat deflection reinforcing plate according to a fifth embodiment of the present invention.

10 is a flow chart showing an injection molding method of an injection molding apparatus having a heat deflection reinforcing plate according to a first embodiment of the present invention.

11 is a flow chart showing an injection molding method of an injection molding apparatus having a heat deflection reinforcing plate according to a fourth embodiment of the present invention.

<Description of the symbols for the main parts of the drawings>

10: first mold fixing plate 20: the first mold

30: heating plate 33: electric heater

40: heat transfer reinforcing plate 50: cooling plate

53: cooling water pipe 60: the second mold fixing plate

70: heat transfer member 80 temperature sensor

Claims (10)

An injection molding apparatus comprising a first mold including a first cavity surface and a second mold including a heating means, The second mold, A first surface and a second surface spaced apart from the first surface, the first surface comprising a second cavity surface facing the first cavity surface and forming a cavity with the first cavity surface; Heating plate; A heat shunting reinforcement plate having a first surface coupled to the second surface of the heating plate and a second surface spaced apart from the first surface and having a higher thermal conductivity than the heating plate; And a cooling plate having a cooling surface coupled with the second surface of the thermally reinforcing plate. And the heating means is installed between the first surface of the heating plate and the second surface of the heat redirecting plate. The method of claim 1, And a heat transfer member installed on at least one of a second surface of the heat transfer reinforcement plate or a cooling surface of the cooling plate to improve heat transfer between the heat transfer reinforcement plate and the cooling plate. Injection molding apparatus having a flavor reinforcing plate. The method of claim 1, The heat redirecting plate, Injection molding apparatus having a heat transfer reinforcing plate, characterized in that it comprises at least one metal of copper or aluminum. The method of claim 1, The heating means, Injection molding apparatus having a heat redirecting plate, characterized in that installed between the heating plate and the heat redirecting plate. An injection molding apparatus comprising a first mold including a first cavity surface and a second mold including a heating means, The second mold, A first surface and a second surface spaced apart from the first surface, the first surface comprising a second cavity surface facing the first cavity surface and forming a cavity with the first cavity surface; Heating plate; A heat deflection reinforcing plate having a first surface coupled to the second surface of the heating plate and a second surface spaced apart from the first surface, wherein the thermal conductivity reinforcing plate has a larger thermal conductivity than the heating plate; The thermally reinforcing plate is moved between a first position in contact with the second surface of the thermally reinforcing plate and a second position away from the second surface of the thermally reinforcing plate based on the position of the thermally reinforcing plate; It includes; a cooling plate having a cooling surface in the direction in contact with the second surface of the, And the heating means is installed between the first surface of the heating plate and the second surface of the heat redirecting plate. The method of claim 5, And a heat transfer member installed on at least one of a second surface of the heat transfer reinforcement plate or a cooling surface of the cooling plate to improve heat transfer between the heat transfer reinforcement plate and the cooling plate. Injection molding apparatus having a flavor reinforcing plate. The method of claim 5, The heat redirecting plate, Injection molding apparatus having a heat transfer reinforcing plate, characterized in that it comprises at least one metal of copper or aluminum. The method of claim 5, The heating means, Injection molding apparatus having a heat redirecting plate, characterized in that installed between the heating plate and the heat redirecting plate. In the injection molding method, A first mold comprising a first cavity surface and a second mold comprising heating means, the second mold having a first surface and a second surface spaced apart from the first surface, the first mold comprising: a first mold; A heating plate facing the first cavity surface, the heating plate including a second cavity surface forming a cavity together with the first cavity surface; A heat deflection reinforcing plate having a first surface coupled to the second surface of the heating plate and a second surface spaced apart from the first surface, wherein the thermal conductivity reinforcing plate has a larger thermal conductivity than the heating plate; And a cooling plate having a cooling surface coupled with the second surface of the thermally reinforcing plate, wherein the heating means is installed between the first surface of the heating plate and the second surface of the thermally reinforcing plate. Providing an injection molding apparatus having a heat deflection reinforcing plate; Moving the heating plate in the first mold direction to form the cavity between the first cavity surface and the second cavity surface; Operating the heating means to heat a heating plate; Injecting molten injection material into the cavity; And cooling the cooling plate to improve thermal diffusion from the heat transfer reinforcing plate to the cooling plate. In the injection molding method, A first mold comprising a first cavity surface and a second mold comprising heating means, the second mold having a first surface and a second surface spaced apart from the first surface, the first mold comprising: a first mold; A heating plate facing the first cavity surface, the heating plate including a second cavity surface forming a cavity together with the first cavity surface; A heat deflection reinforcing plate having a first surface coupled to the second surface of the heating plate and a second surface spaced apart from the first surface, wherein the thermal conductivity reinforcing plate has a larger thermal conductivity than the heating plate; The thermally reinforcing plate is moved between a first position in contact with the second surface of the thermally reinforcing plate and a second position away from the second surface of the thermally reinforcing plate based on the position of the thermally reinforcing plate; And a cooling plate having a cooling surface in a direction in contact with the second surface of the heating means. Providing an injection molding apparatus having a reinforcing plate; Moving the heating plate in the first mold direction to form the cavity between the first cavity surface and the second cavity surface; Operating the heating means to heat a heating plate; Injecting molten injection material into the cavity; Moving the cooling plate to the first position such that the second surface of the heat redirecting plate is in contact with the cooling surface of the cooling plate; And cooling the cooling plate to improve thermal diffusion from the heat transfer reinforcing plate to the cooling plate.

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