Injection molding machine rapid-mould-opening self-adjustment control method

Abstract

The invention discloses an injection molding machine rapid-mould-opening self-adjustment control method. The method comprises the following steps: 1) after an injection molding machine replaces a new mould, obtaining an initial mould-opening control parameter according to a machine parameter and a mould parameter, 2) performing a first time of injection molding machine mould-opening action, and obtaining a first time of mould-opening result data, 3) judging whether a mould-opening position L is in a set derivation range to determine whether to perform position optimization, and 4) judging whether the maximum noise D is less than a set critical value under a current mould-opening control parameter to determine whether to perform noise optimization. Under the condition without additionally equipment, through analysis optimization processing of the injection molding machine mould-opening control parameter and result data, the mould-opening control parameters can be automatically set after the new mould is replaced, and complex manual setting is omitted; and the best mould-opening control parameter can be obtained, the mould-opening speed is improved, and stability of the mould-opening process is also guaranteed.

Description

technical field [0001] The invention belongs to the field of injection molding machines, and more specifically relates to a rapid mold opening self-adjusting control method for an injection molding machine. Background technique [0002] Plastic products are mainly produced by injection molding process, and injection molding machine is the main production equipment. A typical injection molding process includes the following six steps: mold closing, injection, pressure holding, cooling, mold opening, and ejection. Mold opening refers to the plastic products being cooled to a certain extent in the mold cavity, according to a certain speed and Press to open the mold, and then proceed to the next step of robot pick-up, or in-mold labeling and other processes. [0003] Most of the current injection molding machine control systems adopt the action open-loop hierarchical control method. Generally, the mold opening action of the injection molding machine can be divided into four lev...

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Problems solved by technology

[0004] 1) Positioning error: In the open-loop hierarchical action control mode, when the mold opening action reaches the set stop position, due to the deceleration process of pressure and flow, and the response time lag of the hydraulic system, it will cause an error at the end of mold opening. large positioning error

[0005] 2) Machine vibration: During the process of mold opening, especially at the beginning and end positions, there is relatively large vibration, which will affect the mechanical structure of the machine and the life of the mold. At the same time, large vibration will noise pollution

[0006] 3) Mold opening speed is slow: In order to avoid large vibrations during the mold opening process, it is necessary to reduce the setting speed of each section during the mold opening process, especially the first and second fast mold opening speeds. The overall mold opening speed is slow and the mold opening time is long, which affects production efficiency

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