A thermoforming mold temperature detection and control system

Abstract

The invention provides a temperature detection and control system of a hot forming mold, belonging to the technical field of temperature detection and control. The system consists of a temperature detection system and a temperature control system. Due to the temperature detection and control system, the temperature of the hot forming mold can be detected in real time, acquired temperature information is converted to a cooling rate value, and the cooling rate value is compared with a preset cooling rate value, so that an electromagnetic valve is controlled to adjust the flow rate of cooling water, the control on the temperatures of different areas of the mold can be realized, the cooling rate of a plate can be maintained at a certain constant value, and the quality of hot stamping products each time can be maintained at the same level.

Description

Technical field [0001] The invention provides a thermoforming mold temperature detection and control system, which belongs to the technical field of temperature detection and control. Background technique [0002] With the increase of people's awareness of environmental protection and the improvement of automobile safety performance requirements, the world's major automobile companies have adopted automobile lightweight technology to reduce fuel consumption and reduce exhaust emissions; using high-strength steel stamping parts is an effective way to realize automobile lightweight; However, due to the high yield strength, tensile strength and low elongation of high-strength steel plates, conventional cold stamping forming is more difficult; hot forming technology is an advanced manufacturing technology specially used for forming high-strength stamping parts. Solve the limitations of high-strength steel sheet formability. [0003] The principle of hot forming technology is to first ...

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Problems solved by technology

[0004] Chinese patent document CN101893906A discloses a "temperature control system and method". The temperature control system is composed of a temperature sensing module, a signal acquisition module, a PLC, a control module, a control signal output module and a transformer. The temperature signal is converted into After the temperature data is sent to the PLC, the PLC communicates with the control module through the network to transmit the temperature data, combined with the temperature control target trajectory data and the actual temperature value, combined with the set control mode and control parameters to generate control instructions, the control instructions flow through the data flow from the top After being sent to the PLC, the PLC converts it into a signal that can be received by the control signal output module, and the control signal output module drives the transformer to output the corresponding heating power; the advantage is that it adopts a modular design, and the overall structure design is clear and scalable. Good; its disadvantage is that it can only achieve temperature control for heating, but it cannot control the temperature change when cooling; it can only display temperature information, and there is no relevant information storage module to store the information

[0005] Through literature search, it is found that although thermoforming molds in this field can generally realize temperature detection, none of them can accurately control the mold temperature in real time; because the flow of cooling water cannot be automatically adjusted, the temperature in each area of ​​the mold cannot be effectively controlled; and During the hot stamping process, the heat generated in each area is different. If the temperature of each area of ​​the mold cannot be adjusted accurately, that is, the cooling rate of each area cannot be guaranteed to be consistent, which will have a significant impact on the quality of the hot stamping parts.

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