Blow-molding machine for plastic containers and method for the control thereof

Abstract

The invention relates to a device for producing containers using at least one heating unit (2), which heats preforms, at least one blow-molding unit (3), which expands heated preforms into containers, and at least one sensor apparatus (4, 5, 6), which outputs at least one measured variable (Ml, M2, M3) representative of a physical state of the preforms or containers, wherein at least two control variables (S1, S2, S3) of the heating unit (2) or blow-molding unit (3) can be changed, and the device has a regulating unit (10), which is designed such that it regulates the control variables (Sl, S2, S3) as a function of the measured variable (M1, M2, M3 ). According to the invention, the regulating unit (10) has an association apparatus (12), which associates control variables (S1, S2, S3) with predefined measured variables (M1, M2, M3), said associations between the measured variables (M1, M2, M3) and the control variables (S1, S2, S3) being freely pre-definable.

Description

Technical field [0001] The invention relates to a blow molding machine for blow molding plastic containers. Background technique [0002] Such blow molding machines or devices for producing plastic containers are known in the prior art. Such devices usually have a heating zone or a heating furnace in which the preform is first heated. Then, the heated preform is expanded by means of a blow molding device with a blow mold, especially by compressed air. In addition, the control of the heating furnace and the blow molding device is realized according to a number of control variables, such as temperature, heating area of ​​the preform, pressure changes in the actual blow molding process, and similar control variables. [0003] In order to achieve the desired result, coordinate the control variables as carefully and accurately as possible. For this reason, in the prior art, the quality of these containers is checked by machine operators. When the quality of the container deviates fr...

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Problems solved by technology

After adjustment, the operator checks the containers again and may make adjustments again

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