High-temperature injection molding device for PFA plastic particles

Abstract

The utility model discloses a high-temperature injection molding device for PFA (Polyfluoroalkoxy) plastic particles, which is used for processing PFA plastic particles to form parts and comprises a drying module for drying the PFA plastic particles; the injection molding module is connected with the drying module and is used for receiving the PFA plastic particles dried by the drying module and carrying out injection molding on the PFA plastic particles to form parts; the heating module is connected with the injection molding module and is used for heating the injection molding module; and the cooling module is connected with the injection molding module, cools the injection molding module and is used for cooling molding of the parts. According to the device, the process of converting a PFA plastic material from low temperature to high temperature and then from high temperature to low temperature can be realized in a short time, the conversion from PFA plastic particles to high-temperature-resistant plastic parts is realized, and continuous and stable batch automatic production can be realized in an extremely short time.

Description

Technical Field

[0001] This utility model relates to the field of production technology, and in particular to a high-temperature injection molding device for PFA plastic particles. Background Technology

[0002] In existing technologies, plastic materials are widely used in people's daily lives and work, providing convenience. As people's living standards improve, they are paying more and more attention to their appearance, starting with hair care. This has led to some people preferring long, straight hair or wavy curls. To straighten or curl hair, a heating aid is needed, requiring a certain high temperature to achieve the desired effect. Simultaneously, the edge of the heating element in the aid needs a high-temperature resistant plastic part to insulate against the heat source. Therefore, an injection molding device made of PFA high-temperature plastic is needed. Summary of the Invention

[0003] According to an embodiment of the present invention, a high-temperature injection molding apparatus for PFA plastic particles is provided for processing PFA plastic particles into parts, comprising:

[0004] The drying module dries PFA plastic particles;

[0005] The injection molding module is connected to the drying module. It receives the PFA plastic particles dried by the drying module and injection molds the PFA plastic particles into parts.

[0006] The heating module is connected to the injection molding module and heats the injection molding module.

[0007] The cooling module is connected to the injection molding module and is used for cooling and molding parts.

[0008] Furthermore, the drying module includes: a dehumidifying and drying material suction unit, which is connected to the injection molding module. The dehumidifying and drying material suction unit bakes the PFA plastic particles and conveys them to the injection molding module.

[0009] Furthermore, the injection molding module includes: an injection molding machine and a mold;

[0010] The injection molding machine is connected to the drying module and the mold. The injection molding machine receives and melts the dried PFA plastic particles and injects them into the mold.

[0011] The mold is connected to the heating module and the cooling module, and the mold is used to form molten PFA plastic particles;

[0012] The heating module and cooling module are used for heating and cooling the mold, respectively.

[0013] Furthermore, the heating module includes: a mold heating device and a mold hot runner heating device;

[0014] The mold heating equipment is connected to the mold and heats the mold to a first temperature.

[0015] The mold hot runner heating device is connected to the hot runner of the mold and heats the hot runner of the mold to a second temperature.

[0016] Furthermore, the first temperature is 280℃, and the second temperature is 430℃.

[0017] Furthermore, the mold hot runner heating device includes: a heater, a controller, a temperature sensor, and cables;

[0018] The heating element is located at the hot runner, and the heating element heats the hot runner.

[0019] The temperature sensor is connected to the hot runner to detect the temperature of the hot runner.

[0020] The controller is connected to the heater and temperature sensor via a cable. The controller controls the heater to turn on and off based on the temperature detected by the temperature sensor.

[0021] Furthermore, the cooling module includes: a mold cooling device connected to the mold, which cools the mold to a temperature of 150℃~240℃.

[0022] The high-temperature injection molding device for PFA plastic particles according to the present invention can realize the transformation process of PFA plastic material from low temperature to high temperature and then from high temperature to low temperature in a short time, realizing the transformation of PFA plastic particles into high-temperature resistant plastic parts, and enabling continuous and stable batch automated production in a very short time.

[0023] It should be understood that both the foregoing general description and the following detailed description are exemplary and intended to provide further illustration of the claimed technology. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the high-temperature injection molding apparatus for PFA plastic particles according to an embodiment of the present invention. Detailed Implementation

[0025] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, further illustrating the present invention.

[0026] First, combine Figure 1 The present invention describes a high-temperature injection molding apparatus for PFA plastic particles according to an embodiment of the present invention, which is used to process PFA plastic particles into parts and has a wide range of applications.

[0027] like Figure 1 As shown in the figure, the high-temperature injection molding apparatus for PFA plastic particles in this utility model is used to process PFA plastic particles into parts, and includes: a drying module, an injection molding module, a heating module, and a cooling module.

[0028] Specifically, such as Figure 1 As shown, in this embodiment, the drying module dries the PFA plastic particles 1 by baking them at 100°C for 4 hours to remove the moisture inside the PFA plastic particles 1.

[0029] The injection molding module is connected to the drying module, receives the PFA plastic particles 1 dried by the drying module, and injection molds the PFA plastic particles 1 into parts.

[0030] The heating module is connected to the injection molding module to heat the injection molding module and ensure that the injection molding module can adapt to the melting temperature of PFA plastic particles 1;

[0031] The cooling module is connected to the injection molding module. The cooling injection molding module is used for rapid cooling and molding of parts, enabling rapid production in a short time.

[0032] Furthermore, such as Figure 1 As shown, in this embodiment, the drying module includes a dehumidifying and drying suction machine 2, which is connected to the injection molding module. The dehumidifying and drying suction machine 2 bakes the PFA plastic particles 1 and conveys them to the injection molding module. In this case, the dehumidifying and drying suction machine 2 assists in conveying and baking the PFA plastic particles 1 to remove internal moisture from the material. The dehumidifying and drying suction machine 2 is an existing type, including a storage tank, a blower, a heater, and pipes. The blower draws air into the equipment's air inlet pipe, heats the air through the internal heater, and simultaneously evaporates the moisture in the air by passing through a molecular sieve. The blower then sends the hot air through a sealed pipe into a sealed storage tank. The hot air flows through the storage tank, carrying away the moisture from the material, and returns to the molecular sieve from the tank's outlet for further evaporation, thus achieving the evaporation of internal moisture from the material. The suction process automatically conveys the PFA plastic particles 1 through the conveying pipe and a sensor to the hopper of the injection molding machine for use by the injection molding machine.

[0033] Furthermore, such as Figure 1 As shown, in this embodiment, the injection molding module includes: an injection molding machine 3 and a mold 4;

[0034] Injection molding machine 3 is connected to the drying module and mold 4. Injection molding machine 3 receives and melts the dried PFA plastic particles 1 and injects them into mold 4. Injection molding machine 3 is the main equipment for continuous, cyclical, mass production of plastic parts. Due to the temperature characteristics of PFA plastic particles 1, the barrel temperature of injection molding machine 3 must meet a level above 450℃. Injection molding machine 3 carries mold 4 and PFA plastic particles 1, working simultaneously with all auxiliary equipment to obtain the required plastic parts.

[0035] Mold 4 is connected to heating module and cooling module. Mold 4 is used to form molten PFA plastic particles 1. Mold 4 plays a role in realizing the shape, size, appearance and high and low temperature conversion of the parts. Mold 4 can withstand the process of temperature from 180℃ to 280℃ and then drop back to 180℃ within one minute.

[0036] The heating module and cooling module are used for heating and cooling mold 4, respectively.

[0037] Furthermore, such as Figure 1 As shown, in this embodiment, the heating module includes: a mold heating device 6 and a mold hot runner heating device 7;

[0038] The mold heating device 6 is connected to the mold 4 and heats the mold 4 to the first temperature. The mold heating device 6 can be a mold temperature controller to help the mold 4 to heat up to 280°C quickly, so as to ensure that the PFA plastic particles 1 do not solidify into a solid state too early during the flow process inside the mold 4, which would prevent the PFA plastic particles 1 from flowing.

[0039] The hot runner heating device 7 is connected to the hot runner of the mold 4 and heats the hot runner of the mold 4 to a second temperature. The hot runner is the internal channel through which PFA plastic particles 1 flow into the cavity of the mold 4. The hot runner heating device 7 meets the temperature characteristics of PFA special engineering materials and ensures that the hot runner temperature reaches above 450℃.

[0040] Furthermore, such as Figure 1 As shown, in this embodiment, the mold hot runner heating device 7 includes: a heater, a controller, a temperature sensor, and a cable; the heater is located at the hot runner and heats the hot runner; the temperature sensor is connected to the hot runner, and the temperature controller that detects the hot runner is connected to the heater and the temperature sensor via a cable, and the controller controls the opening and closing of the heater according to the temperature detected by the temperature sensor.

[0041] Furthermore, such as Figure 1As shown, in this embodiment, the cooling module includes a mold cooling device 5 connected to the mold 4. The mold cooling device 5 cools the mold 4 to a temperature of 150℃~240℃. The mold cooling device 5 can be a mold 4 cooling machine, which assists in rapidly cooling the mold 4 to the required temperature and maintaining it stable until the part is formed. It is the device that determines the cycle time of the entire production process. After injection molding, the PFA plastic particles 1 need to be cooled inside the mold 4 to remove heat and form plastic parts. At a low temperature (150-240℃) in the mold 4, the PFA plastic particles 1 transform from a semi-fluid state to a solid state, ensuring smooth demolding and maintaining dimensional accuracy and appearance of the formed plastic parts. Because the production cycle time cannot be too long, otherwise the PFA plastic particles 1 will decompose inside the barrel of the injection molding machine 3 and the hot runner of the mold 4, resulting in a decrease in the quality of the plastic parts. Therefore, the mold cooling device 5 is configured to quickly remove heat from the mold 4 and cool it down to the required temperature in a short time. To achieve rapid cooling, two mold cooling devices 5 can be installed. After cooling, the plastic parts are removed from the mold 4 inside the injection molding machine 3 by the parts removal machine 8 and transported to a designated external location. This enables the plastic parts to be produced in an automated and standardized manner, ensuring the stability of the automated production cycle time and saving labor intensity for workers.

[0042] Working principle: PFA plastic particles 1 are sucked into the storage tank of the dehumidifying and drying suction machine 2 through a sealed pipe. The temperature of the dehumidifying and drying suction machine 2 is set to 100℃ (the temperature required for baking PFA plastic particles 1) to remove moisture from the material. Then, the dehumidifying and drying suction machine 2 sucks the PFA plastic particles 1 a second time through a sealed pipe into the hopper of the injection molding machine 3, forming a closed loop.

[0043] The special injection molding mold 4 is installed on the injection molding machine 3. The runner heating device 7 of the mold 4 works to raise the temperature of the hot runner of the mold 4 to 430°C. The barrel temperature of the injection molding machine 3 is raised to 430°C, and the temperature of the mold 4 is rapidly raised to 280°C by the working of the mold heating device 66 (it takes about 12 seconds).

[0044] The process parameters of injection molding machine 3 are set. PFA plastic particles 1, through the shearing motion of the screw and the melting of the barrel in injection molding machine 3, transform from a solid state to a semi-fluid state. At this point, the screw pushes the semi-fluid PFA plastic particles 1 into the runner and cavity of mold 4, filling the entire cavity. Inside mold 4, the mold cooling device 55 rapidly lowers the temperature of mold 4 to 180°C (approximately 16 seconds), causing the semi-fluid PFA plastic particles 1 to solidify as the mold temperature decreases. Injection molding machine 3 opens mold 4, ejecting the part from inside. Part removal machine 8 enters injection molding machine 3 to remove the part from mold 4. The process is repeated automatically, with a cycle time of approximately 60 seconds.

[0045] Above, refer to Figure 1 The present invention describes a high-temperature injection molding apparatus for PFA plastic particles according to an embodiment of the present invention, which can realize the transformation process of PFA plastic material from low temperature to high temperature and then from high temperature to low temperature in a short time, realizing the transformation of PFA plastic particles into high-temperature resistant plastic parts, and enabling continuous and stable batch automated production in a very short time.

[0046] It should be noted that, in this specification, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes that element.

[0047] Although the present invention has been described in detail through the above preferred embodiments, it should be understood that the above description should not be considered as a limitation of the present invention. Various modifications and substitutions to the present invention will be apparent to those skilled in the art after reading the above content. Therefore, the scope of protection of the present invention should be defined by the appended claims.

Claims

1. A PFA plastic particle high-temperature injection molding device for processing PFA plastic particles to form a part, characterized in that, The utility model relates to a PFA plastic particle drying and injection molding system, comprising: a drying module for drying PFA plastic particles; an injection molding module connected to the drying module, receiving the dried PFA plastic particles from the drying module, and injection molding the PFA plastic particles into parts; a heating module connected to the injection molding module for heating the injection molding module; a cooling module connected to the injection molding module for cooling the injection molding module for cooling molding of the parts; the injection molding module comprises an injection molding machine and a mold; the injection molding machine is connected to the drying module and the mold, receives and melts the dried PFA plastic particles, and injects them into the mold; the mold is connected to the heating module and the cooling module, and is used for molding the PFA plastic particles in a molten state; the heating module and the cooling module are used for heating and cooling the mold, respectively; the heating module comprises a mold heating device and a mold hot runner heating device; the mold heating device is connected to the mold and heats the mold to a first temperature; the mold hot runner heating device is connected to the hot runner of the mold and heats the hot runner of the mold to a second temperature; the mold hot runner heating device comprises a heater, a controller, a temperature sensor, and a cable; the heater is arranged at the hot runner and heats the hot runner; the temperature sensor is connected to the hot runner and detects the temperature of the hot runner the controller is connected to the heater and the temperature sensor through the cable, and controls the opening and closing of the heater according to the temperature detected by the temperature sensor.

2. The PFA plastic pellet high-temperature injection molding device according to claim 1, wherein the drying module comprises a dehumidifying drying and material suction all-in-one machine connected to the injection molding module, which bakes PFA plastic particles and delivers them to the injection molding module.

3. The PFA plastic pellet high-temperature injection molding device according to claim 1, wherein the first temperature is 280℃, and the second temperature is 430℃.

4. The PFA plastic pellet high-temperature injection molding device according to claim 1, wherein the cooling module comprises a mold cooling device connected to the mold, which cools the mold to a temperature of 150℃-240℃.

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