Heat treatment equipment for polyimide molding compound

Abstract

The utility model discloses heat treatment equipment for a polyimide molding compound. The heat treatment equipment consists of a box body structure, a heating unit, a shielding gas unit and a control unit, the box body structure comprises a box body, a closed heat insulation door and a storage rack. The heating unit comprises a heating module and a temperature measuring probe; the shielding gas unit comprises a gas inlet, a gas outlet, a gas flowmeter, a pressure gauge, a vacuum gauge, a fan module, a gas disperser, a gas flow guide part and an oxygen content detector; the control unit monitors and controls the heating unit and the shielding gas unit through electric signal interaction. The heat treatment equipment for the polyimide molding compound can effectively prevent the surface of the polyimide molding compound from being oxidized in a long-time heat treatment process to cause performance degradation, and can provide a uniform and stable temperature field for the polyimide molding compound subjected to heat treatment, so that the operation accuracy and reliability of the equipment are improved; and the requirements of high precision and high reliability on polyimide part heat treatment in the fields of aircraft manufacturing and the like are met.

Description

Technical Field

[0001] This utility model relates to a heat treatment device for polyimide molding compounds. Background Technology

[0002] The aerospace industry has very high requirements for its components, demanding not only lightweight materials but also the ability to withstand extreme loads in extremely harsh environments. Polyimide materials, due to their excellent high and low creep resistance, high wear resistance, radiation resistance, good fatigue strength, high PV value, resistance to ionizing radiation, low outgassing under high vacuum, high dielectric strength, and self-extinguishing properties, are widely used in the manufacture of key components for modern aircraft manufacturing, such as bearings, gears, bushings, bushings, piston rings, seals, and connectors.

[0003] The engine is one of the core components of an aircraft, requiring a large number of non-metallic parts, many of which are made of polyimide materials. These include jet engine casings, stator blades, bearings, bearing supports, seals, and thrust washers. These parts need to withstand high strength, high temperature, and high pressure, and their manufacturing process must strictly adhere to relevant standards and specifications. Furthermore, the quality and performance of engine parts directly affect the safety and performance of the aircraft, thus requiring rigorous quality control and testing.

[0004] Heat treatment is one of the key steps to improve the overall performance of polyimide resin materials. It can improve the overall mechanical properties of the material, eliminate residual stress, change the microstructure of the material, and significantly improve the toughness, wear resistance, corrosion resistance and dimensional stability of the manufactured parts.

[0005] Most existing heat treatment equipment for polyimide molding compounds is simply modified from a high-temperature oven, which cannot adequately meet the heat treatment requirements of high-precision and high-reliability parts. Utility Model Content

[0006] The purpose of this invention is to solve the above problems and provide a heat treatment device for polyimide molding compounds.

[0007] The technical solution to achieve the purpose of this utility model is: a heat treatment device for polyimide molding compound, comprising a box structure, a heating unit, a protective gas unit, and a control unit; the box structure includes a box body, a sealed insulated door, and a shelf installed inside the box body; the heating unit includes a heating module and a temperature probe installed inside the box body; the protective gas unit includes an air inlet, an exhaust outlet, a gas flow meter, a pressure gauge, and a vacuum gauge installed on the outer wall of the box body, as well as a fan module, a gas disperser, a gas guide, and an oxygen content detector installed inside the box body; the control unit is installed on the outer wall of the box body and monitors and controls the heating unit and the protective gas unit through electrical signal interaction.

[0008] Furthermore, the enclosed door is equipped with an observation hole and a lock.

[0009] Furthermore, at least two temperature probes are provided.

[0010] Furthermore, the fan module, the heating module, and the gas diffuser are arranged in parallel to each other from bottom to top.

[0011] The positive effects of this utility model are:

[0012] (1) The heat treatment equipment for polyimide molding compound of this utility model is equipped with a protective gas unit, which can effectively replace the air in the system and maintain the protective gas atmosphere inside the equipment during normal operation of the system, which can effectively prevent the polyimide molding compound surface from being oxidized and deteriorating in performance during long-term heat treatment.

[0013] (2) The heat treatment equipment for polyimide molding compounds of this utility model is equipped with a fan module, a heating module, a gas disperser and a gas guide in the internal space of the box body. The fan module, heating module and gas disperser are arranged in parallel from bottom to top. During the heat treatment process, the protective gas enters and flows back to the bottom of the box body along the outer wall of the gas guide arranged around the inside of the box body. The fan module sends the back protective gas upward to the heating module. The heat-protected gas heated by the heating module is dispersed by the gas disperser and enters the shelf space in the center of the box body. After rising to the top of the box body, it flows back to the bottom of the box body through the gas guide, realizing circulation. While the heat-protected gas is flowing back, it can transfer heat to the outer wall of the box body, thereby blocking the interference of external cold on the temperature of the shelf area. Finally, it can provide a uniform and stable temperature field for the heat-treated polyimide molding compounds, improve the accuracy and reliability of the equipment operation, and can well meet the high precision and high reliability requirements of heat treatment of polyimide parts in the fields of aircraft manufacturing.

[0014] (3) Heat treatment generally requires a stable and continuous process with high requirements for time and temperature control. If the process is interrupted in the middle, it will have an irreversible effect. In order to avoid misoperation, this utility model is equipped with a lock on the closed insulation door and different levels of operation permission passwords are set in the control unit. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the internal structure of the heat treatment equipment for polyimide molding compound of this utility model.

[0016] Figure 2 This is a schematic diagram of the external structure of the heat treatment equipment for polyimide molding compound of this utility model. Detailed Implementation

[0017] (Example 1)

[0018] See Figure 1 and Figure 2 The heat treatment equipment for polyimide molding compound in this embodiment consists of a box structure 100, a heating unit 200, a protective gas unit 300, and a control unit 400.

[0019] The box structure 100 includes a box body 110, a closed and insulated door 120, and a shelf 130 installed in the internal space of the box body 110. In this embodiment, the shelf 130 has two layers, upper and lower.

[0020] The box body 110 is lined with high-temperature resistant insulation material, which can withstand temperatures above 420℃.

[0021] The enclosed door 120 is equipped with an observation hole 121 and a lock 122.

[0022] The heating unit 200 includes a heating module 210 and a temperature probe 220 installed in the internal space of the box body 110. In this embodiment, there are two temperature probes 220. The temperature probes 220 can monitor the temperature inside the box body in real time and send the data back to the control unit. The control unit adjusts the operating status of the heating module and the fan module in real time according to the relevant program settings to ensure that the system operates strictly in accordance with the relevant settings.

[0023] The protective gas unit 300 includes an air inlet 310, an exhaust outlet 320, a gas flow meter 330, a pressure gauge 340, a vacuum gauge 350 installed on the outer wall of the housing body 110, and a fan module 360, a gas diffuser 370, a gas guide 380, and an oxygen content detector 390 installed in the internal space of the housing body 110. The oxygen content detector 390 can monitor the oxygen concentration in the equipment throughout the process, ensuring the reliability of the equipment operation.

[0024] The gas guide 380 has an open bottom, a mesh top, and a closed perimeter. All components installed inside the box body are located inside the gas guide 380. The fan module 360, heating module 210, and gas diffuser 370 are arranged in parallel from bottom to top. All components installed inside the box body 110 can also withstand temperatures above 420°C.

[0025] The control unit 400 is installed on the outer wall of the enclosure 110 and monitors and controls the heating unit 200 and the protective gas unit 300 through electrical signal interaction. The control unit 400 is physically isolated from the enclosure 110, which can prevent the high temperature of the enclosure from affecting the precision electronic components of the control unit.

[0026] The working process of the heat treatment equipment for polyimide molding compound in this embodiment is as follows:

[0027] ① Open the sealed insulated door 120, place the polyimide molding compound on the shelf 130 inside the box body 110, and then close and lock the sealed insulated door 120.

[0028] ② Turn on the main power supply on the control unit 400, enter the operation permission password, replace the air in the heat treatment equipment with protective gas three times, continuously introduce protective gas into the heat treatment equipment, and set the protective gas pressure and flow rate according to the process.

[0029] Set the process parameters such as temperature and time for the heating, holding and cooling stages according to the process requirements, press the start button to start the heating unit 200 and the protective gas unit 300, and the heat treatment will officially begin.

[0030] ③ After the heat treatment is completed, the control unit 400 automatically shuts down the heating unit 200 and the protective gas unit 300, and manually shuts off the main power supply of the control unit 400. After confirming that the internal pressure of the heat treatment equipment is normal by reading the relevant values ​​of the pressure gauge 350 and the vacuum gauge 360, the sealing insulation door 120 is opened and the polyimide molding compound is taken out.

Claims

1. A heat treatment device for polyimide molding compounds, characterized in that: It consists of a housing structure (100), a heating unit (200), a protective gas unit (300), and a control unit (400); The box structure (100) includes a box body (110), a closed and insulated door (120), and a shelf (130) installed in the internal space of the box body (110). The heating unit (200) includes a heating module (210) and a temperature probe (220) installed in the internal space of the box body (110). The protective gas unit (300) includes an air inlet (310), an exhaust outlet (320), a gas flow meter (330), a pressure gauge (340), a vacuum gauge (350) installed on the outer wall of the box body (110), and a fan module (360), a gas diffuser (370), a gas guide (380), and an oxygen content detector (390) installed in the internal space of the box body (110). The control unit (400) is installed on the outer wall of the box body (110) and monitors and controls the heating unit (200) and the protective gas unit (300) through electrical signal interaction.

2. The heat treatment equipment for polyimide molding compounds according to claim 1, characterized in that: The enclosed door (120) is equipped with an observation hole (121) and a lock (122).

3. The heat treatment equipment for polyimide molding compounds according to claim 1, characterized in that: The temperature probe (220) is provided with at least two.

4. The heat treatment equipment for polyimide molding compounds according to any one of claims 1 to 3, characterized in that: The fan module (360), the heating module (210), and the gas diffuser (370) are arranged in parallel to each other from bottom to top.

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