Online analysis method and equipment for injection mold cooling system

Abstract

The invention belongs to the field of mold design and evaluation, and discloses an online analysis method and equipment for an injection mold cooling system. The method comprises the following steps:carrying out model cooling analysis on a mold and a plastic part under the condition of not considering a cooling system to obtain internal factors representing the influence of the internal factors on the cooling effect of the plastic part; introducing a finite-length continuous line heat source model of a constant-temperature boundary, and calculating an external factor representing the influence of the external factor on the cooling effect of the plastic part; simulating the whole system model to obtain the cooling time of the plastic part, namely the comprehensive heat influence effect; establishing and training a neural network model of the internal factors, the external factors and the comprehensive heat influence effect; and during online analysis, recalculating the external factoraccording to the modified size and position data of the cooling pipeline, not recalculating the internal factor, and predicting the comprehensive heat influence effect by adopting the trained neural network model. The method is simple and easy to implement, and online analysis of the cooling system can be achieved.

Description

technical field [0001] The invention belongs to the field of mold design and evaluation, and more specifically relates to an online analysis method and equipment for an injection mold cooling system. Background technique [0002] Injection molding is widely used because of its high production efficiency, good product quality, low material consumption, and low production cost. At present, the output of injection molds accounts for more than one-third of the entire plastic mold design and production. With the development of the trend of substituting plastic for steel and plastic for wood, plastic products have been used more and more in daily life and industry, and industries such as automobiles, energy, machinery, electronics, information, aerospace, etc. requirements are also increasing. [0003] The injection molding process is mainly composed of clamping, plasticizing, injection, pressure holding, cooling, mold opening, ejection and other stages, in which the cooling time...

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Problems solved by technology

[0005] Aiming at the above defects or improvement needs of the prior art, the present invention provides an online analysis method for the cooling system of injection molds, the purpose of which is to divide the factors affecting the cooling of plastic products into two types: internal factors and external factors, which are calculated according to the two types of factors respectively Internal factors and external factors are combined to calculate the comprehensive thermal effect reflecting the actual cooling of the product, so as to realize the online analysis of the cooling system, thereby solving the technical problems of long analysis time and low efficiency of the current cooling system

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