Injection molding system

Abstract

The utility model belongs to the technical field of injection molding, and provides an injection molding system. The mold comprises a first mold assembly, a second mold assembly, a heating module, a cooling module and a control module, a cavity is formed after the second mold assembly and the first mold assembly are assembled, and the mold comprises a movable part and a heating plate located on the side, away from the cavity, of the movable part. The movable part forms a part of the shape of the injection molding part and is provided with an air channel; the heating module comprises a heating piece connected in the heating plate, and the heating piece is used for heating the heating plate; the cooling module comprises an air tap communicated with the air channel, and the air tap is used for supplying cold air into the air channel; the control module is electrically connected with the heating module and the cooling module so as to control the heating module to heat the heating plate and control the cooling module to supply cooling air to the air channel. The injection mold is favorable for improving the production efficiency of injection molded parts.

Description

Technical Field

[0001] This utility model relates to the field of injection molding technology, and in particular to an injection molding system. Background Technology

[0002] To improve the product's battery life, a larger capacity battery is needed to meet the requirements. However, a larger capacity battery places higher demands on the heat dissipation capacity of the casing. The most economical and effective way to improve the casing's heat dissipation is to add more ventilation holes. The casing can be manufactured using injection molding. With increased ventilation holes, the fluidity of the injection molding liquid within the mold cavity becomes even more critical. Insufficient fluidity will result in incomplete or defective ventilation holes far from the injection port, leading to an overall defective casing. This not only increases processing costs but also reduces production efficiency.

[0003] In existing technologies, heating the mold cavity is commonly used to improve the flowability of the injection molding liquid within it. While this solves the flowability problem, it also prolongs the cooling time of the injection molding liquid, thus extending the molding time within the cavity. Although this addresses the issue of low shell yield, it still reduces the overall production efficiency of the shells.

[0004] Therefore, a new solution is needed to address the aforementioned technical problems. Utility Model Content

[0005] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide an injection molding system to solve the problem of low shell production efficiency in the prior art.

[0006] To achieve the above and other related objectives, this utility model provides an injection molding system, specifically configured as follows: It includes a first mold assembly, a second mold assembly, a heating module, a cooling module, and a control module. The second mold assembly, after being closed with the first mold assembly, forms a cavity. The system includes a movable part and a heating plate located on the side of the movable part away from the cavity. The movable part forms part of the shape of the injection molded part and is provided with an air passage. The heating module includes a heating element connected within the heating plate, used to heat the heating plate. The cooling module includes an air nozzle communicating with the air passage, used to supply cold air into the air passage. The control module is electrically connected to the heating module and the cooling module. When the first mold assembly and the second mold assembly open, the control module controls the heating module to heat the heating plate, so that the heating plate transfers heat to the movable part. When the first mold assembly and the second mold assembly close, the control module controls the cooling module to supply cooling air to the air passage to cool the movable part, so that the movable part absorbs heat from the injection molding liquid within the cavity.

[0007] Optionally, the injection molding system further includes a detection module electrically connected to the control module. The detection module is used to detect the mold opening state and mold closing state of the first mold assembly and the second mold assembly, so as to send an mold opening signal or a mold closing signal to the control module.

[0008] Optionally, the detection module includes a striker connected to the first mold assembly, an elastic stop block connected to the second mold assembly, and a relay. The elastic stop block is connected to the relay. When the striker presses the elastic stop block, the relay sends the mold closing signal to the control module. When the striker separates from the elastic stop block, the relay sends the mold opening signal to the control module.

[0009] Optionally, when the control module receives the mold opening signal, the control module sends a heating signal to the heating module, and the heating module heats the heating plate after receiving the heating signal; when the control module receives the mold closing signal, the control module sends a cooling signal to the cooling module after a preset time delay, and the cooling module cools the moving parts after receiving the cooling signal.

[0010] Alternatively, the relay is electrically connected to the heating module and the cooling module. When the control module receives the mold opening signal, the control module sends a heating signal to the relay, and the relay sends a heating signal to the heating module after receiving the heating signal. When the control module receives the mold closing signal, the control module sends a cooling signal to the relay, and the relay sends a cooling signal to the cooling module after receiving the cooling signal and delaying for a preset time.

[0011] Optionally, the second module assembly further includes a base plate, and a heat insulation plate and a pad connected to the base plate. The heating plate is connected to the base plate through the heat insulation plate and the pad, and the heat insulation plate is provided on both sides of the heating plate in the width direction. The pad is provided between the two heat insulation plates, and the air nozzle passes through the base plate and the heat insulation plate and is connected to the air passage.

[0012] Optionally, the heating module further includes a temperature sensor connected to the heating plate for detecting the real-time temperature of the heating plate.

[0013] Optionally, the air passage extends along the length of the movable component and at least one such passage is provided; when multiple air passages are provided, the multiple air passages are distributed at equal intervals along the width of the movable component.

[0014] Optionally, the movable component includes a first movable member, a second movable member, and a third movable member arranged side by side. The first movable member is provided with a connection port communicating with the air nozzle and a first vent communicating with the connection port. The second movable member is provided with a second vent, and the third movable member is provided with a third vent. The connection port, the first vent, the second vent, and the third vent communicate to form the air passage.

[0015] Optionally, the first movable member is further provided with a first exhaust port communicating with the first vent, and the second movable member is further provided with a second exhaust port communicating with the second vent.

[0016] Optionally, the first movable member is located in the middle of the movable component, the second movable member is located on both sides of the movable component, the third movable member is disposed between the first movable member and the second movable member, and the third movable member is also disposed on the side of the second movable member away from the first movable member.

[0017] As described above, the injection molding system of this utility model has the following beneficial effects:

[0018] By setting up heating and cooling modules, after the first and second mold assemblies are opened, the control module controls the heating plate of the heating module to heat the moving parts that form part of the injection molded part. When the first and second mold assemblies are closed, in the early stage of injection molding, the heated moving parts absorb less heat from the injection molding liquid, which helps to improve the fluidity of the injection molding liquid and thus improves the yield of injection molded parts. After the first and second mold assemblies are closed, the control module controls the cooling module to supply cooling air to the air passages of the moving parts to cool them, so that the moving parts absorb heat from the injection molding liquid in the cavity, which helps to shorten the molding time of the injection molding liquid and thus improves the production efficiency of injection molded parts. Attached Figure Description

[0019] Figure 1 The diagram shown is a structural schematic of the injection molding system according to an embodiment of the present invention.

[0020] Figure 2 The diagram shows a partial structural schematic of the injection molding system according to an embodiment of the present invention.

[0021] Figure 3 The diagram shows a partial structural schematic of the injection molding system according to an embodiment of the present invention.

[0022] Figure 4 The diagram shown is a structural schematic of the heating plate according to an embodiment of the present utility model.

[0023] Figure 5 Displayed as Figure 1 A schematic diagram of the structure of part A in the middle;

[0024] Figure 6 The diagram shown is a cross-sectional view of the first movable component according to an embodiment of the present invention.

[0025] Figure 7 The diagram shown is a cross-sectional view of the second movable component according to an embodiment of the present invention.

[0026] Figure 8 The diagram shown is a cross-sectional view of the third movable component according to an embodiment of the present invention.

[0027] Explanation of reference numerals in the attached figures

[0028] 1-First module component;

[0029] 2-Second module assembly; 21-Moving part; 211-Air passage; 22-Heating plate; 221-Heating groove; 23-Base plate; 24-Heat insulation plate; 25-Padded block; 26-First moving part; 261-Connecting port; 262-First vent hole; 263-First exhaust hole; 27-Second moving part; 271-Second vent hole; 272-Second exhaust hole; 28-Third moving part; 281-Third vent hole;

[0030] 3-Detection module; 31-Striking pin; 32-Elastic striking block; 33-Relay. Detailed Implementation

[0031] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model.

[0032] It should be noted that the illustrations provided in this embodiment are only schematic representations of the basic concept of this utility model. Therefore, the illustrations only show components relevant to this utility model and are not drawn according to the actual number, shape, and size of the components in implementation. In actual implementation, the shape, quantity, and proportion of each component can be arbitrarily changed, and the component layout may be more complex. The structures, proportions, and sizes shown in the accompanying drawings are only for illustrative purposes to aid those skilled in the art and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effects and objectives of this utility model, should still fall within the scope of the technical content disclosed in this utility model. Furthermore, terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are only for clarity of description and are not intended to limit the scope of implementation of this utility model. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of implementation of this utility model.

[0033] like Figures 1 to 3 As shown, some embodiments of this application provide an injection molding system, including a first mold assembly 1, a second mold assembly 2, a heating module, a cooling module, and a control module. After the first mold assembly 1 and the second mold assembly 2 are closed, a cavity is formed. The control module is electrically connected to both the heating module and the cooling module.

[0034] The second mold assembly 2 includes a movable part 21 and a heating plate 22. The movable part 21 forms part of the shape of the injection molded part, that is, the side of the movable part 21 facing the cavity is part of the inner wall of the cavity, and an air passage 211 is provided on the movable part 21. The heating plate 22 is located on the side of the movable part 21 away from the cavity and is used to transfer heat to the movable part 21.

[0035] The heating module includes a heating element installed inside the heating plate 22 for heating the heating plate 22.

[0036] The cooling module includes an air nozzle that communicates with an air passage 211 to supply cold air into the air passage 211 to cool the moving parts 21.

[0037] After the first mold assembly 1 and the second mold assembly 2 are opened, the control module controls the heating module to heat the heating plate 22, so that the heating plate 22 transfers heat to the moving part 21. After the first mold assembly 1 and the second mold assembly 2 are closed, before the cooling module cools the moving part 21, the injection molding liquid is injected into the cavity. The heated moving part 21 absorbs less heat from the injection molding liquid, which helps to improve the fluidity of the injection molding liquid, and thus helps to improve the yield of injection molded parts. This setting also helps to reduce the temperature difference between the first mold assembly 1 and the second mold assembly 2, thereby improving the yield of injection molded parts.

[0038] After the first mold assembly 1 and the second mold assembly 2 are closed, the control module controls the cooling module to supply cooling air to the air passage 211 to cool the moving part 21, so that the moving part 21 absorbs the heat of the injection liquid in the cavity, which helps to shorten the molding time of the injection liquid and thus helps to improve the production efficiency of injection molded parts.

[0039] In one example, the first membrane component can be set as the female mold, and the second membrane component can be set as the male mold.

[0040] like Figure 4 As shown, for example, the heating element includes, but is not limited to, a flexible heating wire, which is embedded in the heating groove 221 of the heating plate 22.

[0041] In some embodiments, the heating module further includes a temperature sensor mounted on the heating plate 22 to detect the real-time temperature of the heating plate 22 so as to control the temperature of the heating plate 22 at a preset temperature value.

[0042] For example, the preset temperature value can be set to 70°, 75°, 80°, 83°, etc., depending on the actual needs. In this embodiment, the preset temperature value is set to 80°.

[0043] In one example, the cooling module also includes a condenser connected to an air nozzle via a pipe, which delivers cooling air to the air passage 211 of the movable part 21.

[0044] like Figure 1 As shown, in some embodiments, the control module is also electrically connected to a detection module 3. The detection module 3 is used to detect the mold opening state and mold closing state of the first mold assembly 1 and the second mold assembly 2, so as to send an opening signal or a closing signal to the control module, so that the control module can control the heating module to heat the moving part 21, or control the cooling module to cool the moving part 21, and accurately control the molding process of the injection molded part.

[0045] like Figure 5As shown, in some embodiments, the detection module 3 includes a striking pin 31, an elastic stop block 32, and a relay 33. The striking pin 31 is mounted on the first mold assembly 1, and the elastic stop block 32 and the relay 33 are mounted on the second mold assembly 2, with the elastic stop block 32 mounted on the relay 33. When the striking pin 31 presses against the elastic stop block 32, the relay 33 sends a mold closing signal to the control module; when the striking pin 31 separates from the elastic stop block 32, the relay 33 sends a mold opening signal to the control module.

[0046] In some embodiments, after the control module receives the mold opening signal, it sends a heating signal to the heating module. Upon receiving the heating signal, the heating module begins to heat the heating plate 22, gradually setting the temperature of the heating plate 22 to a preset value. During this process, the heating plate 22 transfers heat to the moving part 21, gradually equalizing the temperatures of the heating plate 22 and the moving part 21.

[0047] After receiving the mold closing signal, the control module sends a cooling signal to the cooling module after a preset delay. During the preset time, the heating module continuously heats the heating plate 22 to maintain the heating plate 22 and the moving part 21 at a preset temperature, which helps to reduce the absorption of heat from the injection molding liquid by the moving part 21 and thus improves the fluidity of the injection molding liquid.

[0048] After receiving a cooling signal, the cooling module supplies cooling air to the air passage 211 of the moving part 21 to cool it. The cooled moving part 21 absorbs heat from the injection molding liquid, accelerating the molding process and thus improving the production efficiency of injection molded parts. Furthermore, the cooled moving part 21 also absorbs heat from the heating plate 22, lowering its temperature.

[0049] In some other embodiments, relay 33 is electrically connected to both the heating module and the cooling module. When the control module receives the mold opening signal, it sends a heating signal to relay 33, which then sends a heating signal to the heating module. When the control module receives the mold closing signal, it sends a cooling signal to relay 33, which then sends a cooling signal to the cooling module after a preset delay. In this case, relay 33 is a time-delay relay.

[0050] For example, the preset delay time can be set to 2 seconds, 3 seconds, 4 seconds, etc., depending on the actual needs. In this embodiment, the preset delay time is set to 3 seconds.

[0051] It should be noted that when the control module sends a cooling signal to the cooling module, the heating module simultaneously sends a heating-off signal to stop heating the heating plate 22. When the control module sends a heating signal to the heating module, it simultaneously sends a cooling-off signal to the cooling module to stop supplying cooling air to the moving part 21.

[0052] like Figure 2 and Figure 3 As shown, in some embodiments, the second module assembly 2 further includes a base plate 23, a heat insulation plate 24, and a pad 25. The heat insulation plate 24 and the pad 25 are both mounted on the base plate 23. The heating plate 22 is mounted on the base plate 23 via the heat insulation plate 24 and the pad 25. The heat insulation plate 24 provides heat insulation for the heating plate 22. Heat insulation plates 24 are provided on both sides of the heating plate 22 in the width direction, and a pad 25 is provided between the two heat insulation plates 24. The air nozzle passes through the base plate 23 and the heat insulation plate 24 and connects to the air passage 211.

[0053] In some embodiments, the air passage 211 extends along the length of the movable component 21, and at least one air passage 211 is provided to accelerate the cooling time of the movable component 21. The number of air passages 211 can be one, two, three, four, five, etc., depending on actual needs. When multiple air passages 211 are provided, they are evenly distributed along the width direction of the movable component 21 to ensure uniform temperature in all areas of the movable component 21. In this embodiment, four air passages 211 are provided.

[0054] like Figure 3 , Figures 6 to 8 As shown, in some embodiments, the movable component 21 includes a first movable member 26, a second movable member 27, and a third movable member 28 arranged side by side. The first movable member 26 is provided with a connecting port 261 and a first vent 262, the connecting port 261 being used to communicate with an air nozzle. The second movable member 27 is provided with a second vent 271, and the third movable member 28 is provided with a third vent 281. The connecting port 261, the first vent 262, the second vent 271, and the third vent 281 communicate to form an air passage 211.

[0055] In some embodiments, one or more of the following are provided: connection port 261, first vent 262, second vent 271, and third vent 281. The connection port 261 and the first vent 262 can be configured in a one-to-one correspondence, or one connection port 261 can correspond to two or more first vents 262, or two or more connection ports 261 can correspond to one first vent 262. The first vent 262, second vent 271, and third vent 281 are configured in a one-to-one correspondence.

[0056] In one application example, the first movable component 26 is provided with two connection ports 261, each connection port 261 being connected to two first vent holes 262, that is, there are four first vent holes 262. The second movable component 27 is provided with four second vent holes 271, and the third movable component 28 is provided with four third vent holes 281.

[0057] In some embodiments, the first movable member 26 is further provided with a first exhaust port 263 communicating with the first vent 262, and the second movable member 27 is further provided with a second exhaust port 272 communicating with the second vent 271. The first exhaust port 263 and the second exhaust port 272 are used to discharge the cooled air that has undergone heat exchange in the air passage 211.

[0058] For example, the number of first exhaust holes 263 corresponds one-to-one with the number of connection ports 261, and the diameter of the connection port 261 is larger than the diameter of the first exhaust holes 263, so that the cooling air flowing in through the connection port 261 can pass through the entire air passage 211. When there are two connection ports 261, there are also two first exhaust holes 263, located on both sides of the first movable member 26.

[0059] The number of second vent holes 272 corresponds one-to-one with the number of second vent holes 271. When there are 4 second vent holes 271, there are also 4 second vent holes 272. There is one second vent hole 272 on each side of the second movable member 27, and there are also 2 second vent holes 272 on the side of the second movable member 27 away from the cavity.

[0060] In some embodiments, the first movable member 26 is located in the middle of the movable component 21, and the cooling air flowing into the air passage 211 through the air nozzle flows to both sides of the movable component 21. The second movable member 27 is located on both sides of the movable component 21, and a third movable member 28 is disposed between the first movable member 26 and the second movable member 27, and the third movable member 28 is also disposed on the side of the second movable member 27 away from the first movable member 26, so that the cooling air that has undergone heat exchange in the air passage 211 is mainly discharged through both sides of the air passage 211.

[0061] In one application example, after the first mold assembly 1 and the second mold assembly 2 are opened, the control module controls the heating module to heat the heating plate 22 from 65° to 80°. During this process, the moving part 21 absorbs the heat from the heating plate 22, reducing the temperature difference between the two until their temperatures are equal.

[0062] After the first mold assembly 1 and the second mold assembly 2 are closed, the control module controls the heating module to maintain the temperature of the heating plate 22 at 80°C. At this time, the temperature between the moving part 21 and the heating plate 22 is basically the same. After the injection molding liquid is injected into the cavity, the heated moving part 21 can reduce the absorption of heat from the injection molding liquid, thereby reducing the heat loss of the injection molding liquid and improving the fluidity of the injection molding liquid.

[0063] After 3 seconds, the control module stops the heating module and controls the cooling module to deliver cooling air to the air passage 211 of the moving part 21 to reduce the temperature of the moving part 21. The cooled moving part 21 absorbs the heat from the injection molding liquid, thereby shortening the molding time of the injection molding liquid. At this time, the cooled moving part 21 also absorbs the heat from the heating plate 22, so that the temperature of the heating plate 22 drops from 80° to 65°.

[0064] In summary, the injection molding system provided by this utility model, by setting up a heating module and a cooling module, allows the control module to control the heating plate of the heating module to heat the moving parts after the first mold assembly and the second mold assembly are opened. This allows the heating plate to transfer heat to the moving parts that form part of the shape of the injection molded part. After the first mold assembly and the second mold assembly are closed, in the early stage of injection of the injection liquid into the cavity, the heated moving parts absorb less heat from the injection liquid, which helps to improve the fluidity of the injection liquid and thus improves the yield rate of the injection molded parts. After the first mold assembly and the second mold assembly are closed, the control module controls the cooling module to supply cooling air to the air passages of the moving parts to cool them. This allows the moving parts to absorb heat from the injection liquid in the cavity, which helps to shorten the molding time of the injection liquid and thus improves the production efficiency of the injection molded parts.

[0065] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. An injection molding system, characterized in that, include: First module component; The second mold assembly, after being molded together with the first mold assembly, forms a cavity, including a movable part and a heating plate located on the side of the movable part away from the cavity. The movable part forms part of the shape of the injection molded part and is provided with air passages. A heating module includes a heating element connected within the heating plate, the heating element being used to heat the heating plate; A cooling module includes an air nozzle connected to the air passage, the air nozzle being used to supply cold air into the air passage; The control module is electrically connected to the heating module and the cooling module. When the first mold assembly and the second mold assembly are opened, the control module controls the heating module to heat the heating plate so that the heating plate transfers heat to the moving part. When the first mold assembly and the second mold assembly are closed, the control module controls the cooling module to supply cooling air to the air passage to cool the moving part so that the moving part absorbs the heat of the injection liquid in the cavity.

2. The injection molding system according to claim 1, characterized in that: The injection molding system further includes a detection module electrically connected to the control module. The detection module is used to detect the mold opening and mold closing states of the first mold assembly and the second mold assembly, so as to send an mold opening signal or a mold closing signal to the control module.

3. The injection molding system according to claim 2, characterized in that: The detection module includes a striker connected to the first mold assembly, an elastic stop block connected to the second mold assembly, and a relay. The elastic stop block is connected to the relay. When the striker presses the elastic stop block, the relay sends the mold closing signal to the control module. When the striker separates from the elastic stop block, the relay sends the mold opening signal to the control module.

4. The injection molding system according to claim 3, characterized in that: When the control module receives the mold opening signal, it sends a heating signal to the heating module, and the heating module heats the heating plate after receiving the heating signal; when the control module receives the mold closing signal, it sends a cooling signal to the cooling module after a preset time delay, and the cooling module cools the moving parts after receiving the cooling signal. Alternatively, the relay is electrically connected to the heating module and the cooling module. When the control module receives the mold opening signal, the control module sends a heating signal to the relay, and the relay sends a heating signal to the heating module after receiving the heating signal. When the control module receives the mold closing signal, the control module sends a cooling signal to the relay, and the relay sends a cooling signal to the cooling module after receiving the cooling signal and delaying for a preset time.

5. The injection molding system according to claim 1, characterized in that: The second module assembly also includes a base plate, and a heat insulation plate and a pad connected to the base plate. The heating plate is connected to the base plate through the heat insulation plate and the pad. The heat insulation plate is provided on both sides of the heating plate in the width direction. The pad is provided between the two heat insulation plates. The air nozzle passes through the base plate and the heat insulation plate and is connected to the air passage.

6. The injection molding system according to claim 1, characterized in that: The heating module also includes a temperature sensor connected to the heating plate for detecting the real-time temperature of the heating plate.

7. The injection molding system according to any one of claims 1-6, characterized in that: The air passage extends along the length of the movable component and is provided in at least one manner; when multiple air passages are provided, the multiple air passages are distributed at equal intervals along the width direction of the movable component.

8. The injection molding system according to claim 7, characterized in that: The movable components include a first movable component, a second movable component, and a third movable component arranged side by side. The first movable component is provided with a connection port communicating with the air nozzle and a first vent hole communicating with the connection port. The second movable component is provided with a second vent hole, and the third movable component is provided with a third vent hole. The connection port, the first vent hole, the second vent hole, and the third vent hole communicate to form the air passage.

9. The injection molding system according to claim 8, characterized in that: The first movable component is further provided with a first exhaust port communicating with the first vent, and the second movable component is further provided with a second exhaust port communicating with the second vent.

10. The injection molding system according to claim 9, characterized in that: The first movable member is located in the middle of the movable component, the second movable member is located on both sides of the movable component, the third movable member is disposed between the first movable member and the second movable member, and the third movable member is also disposed on the side of the second movable member away from the first movable member.

Images