Method and equipment for monitoring abnormity in injection molding process of injection molding machine

The invention belongs to the related technical field of injection molding machine monitoring, and discloses an injection molding machine injection molding process abnormity monitoring method and device, the method comprises an offline training stage and an online monitoring stage, the offline training stage collects characteristic data and pressure-position data under various different process conditions; the feature data is combined into a feature data set, and the pressure-position data is used for constructing a feature extraction model to realize feature extraction of the pressure-position data; and constructing a process identification model by using a dimension reduction vector output by the feature extraction model. In the online monitoring stage, combining the dimension reduction vector output by the feature extraction model, the error vector and the collected feature data into a feature vector; and inputting the dimension reduction vector into a process identification model to obtain a belonging proc