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Scientific and technological achievements transformation announcement [2021] No. 54 -- two patents were transferred, including a method for optimizing injection rate of plastic injection molding process

Release time: 2021-11-24 Editor: lj Source: Number of visits:

According to the "Huazhong University of science and technology achievements transformation management measures", the related matters of "one kind of optimization method of injection rate of plastic injection molding process and other two patents transfer" were publicized as follows:

1、 Title and brief introduction of achievements:

The achievements include the following two intellectual property rights:

Invention patent 1: an optimization method for injection rate of plastic injection molding process

Inventors: Zhang Yun, Zhou Huamin, Huang Zhigao, Liang Junjie, Xu Zelin, Li Dequn, Zhou Xudao, Mao Ting

Patent No.: zl201510980122.6

Patentee: Huazhong University of science and technology

Brief introduction: the invention provides an optimization method for injection rate of plastic injection molding process, including solving viscosity power-law model, measuring average thickness of plastic parts, solving flow front area injection time curve in filling process, segmenting injection process according to flow front area injection time curve, and adjusting volume flow rate, The melt flow front velocity of each segment is kept constant. According to the simplified mathematical model of filling process, the invention detects the change of inlet pressure with injection time, reverses the change of melt front area, establishes the relationship between flow front area and injection time, so as to more accurately determine the velocity segment point and adjust the injection rate, so as to keep the melt flow front at a constant flow speed. At the same time, the optimization algorithm in the invention can realize the automatic optimization segmentation of injection speed without manual participation, thus reducing the workload and improving the production efficiency.

Invention patent 2: a closed loop control precision machining method and system based on in place detection

Inventors: Zhang Yun, Liu Jiahuan, Huang Zhigao, Zhou Huamin, Li Dequn

Patent No.: zl201910646784.8

Patentee: Huazhong University of science and technology

Introduction: the invention discloses a closed-loop control precision machining method and system based on in-situ detection, belonging to the field of precision machining. The method includes: S1, the machine tool carries out a machining process according to the preset processing path; S2. The shape dimension, shape key point size and processing parameters of the workpiece are collected in situ, and the neural network intelligent compensation model is input in real time. The error compensation value C of the tool is calculated, and the machining path of the next step is optimized according to this, so as to carry out real-time dynamic compensation for the next step of machining; S3. Take the processing path of the next step optimized by step S2 as the preset processing path of step S1, and repeat steps S1 and S2 until the machining is completed. The invention obtains the local key dimensions in the process of processing in real time through in-situ measurement, calculates the processing error, calculates the processing compensation value in real time based on the neural network algorithm, automatically optimizes the processing path, so as to reduce the processing error and realize the precision machining with real-time closed-loop control.

2、 Proposed transaction price

Agreement transfer: 600000 yuan

3、 Price formation process

Wuhan zhongkangzheng Assets Appraisal Co., Ltd. was entrusted by the school to carry out the assets appraisal of the project, with the appraisal value of 599700 yuan. With the consent of all inventors and negotiation with Wuhan moding Technology Co., Ltd., both parties agree that the achievement will be transferred at an agreement price of 600000 yuan. It is hereby announced that the publicity period is 15 days, from November 24, 2021 to December 8, 2021. If you have any objection, please report it to our hospital in written form within the period of publicity.

Contact person: Mr. Cao

Tel: 87558732

Institute of science and technology development

November 24, 2021


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