Blow Molding Machine Dynamic Heating for Multi-Container Production
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Solution Overview
Problem
Current blow molding machines require multiple production runs and manual changes to produce different types of plastic containers, leading to inefficiencies and downtimes, as they are typically designed to produce only one type of container at a time.
Innovation Solution
A method where a blow molding machine operates to produce at least two different plastic containers in a single production run by controlling the heating device to heat preforms to different temperatures, allowing for continuous production without manual intervention, using advanced control systems and treatment units to differentiate the containers based on physical, chemical, and geometric properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the blow molding machine produces only one type of plastic container in each production run, then the manufacturing precision and quality control for each container type is maintained, but the productivity and efficiency are reduced due to multiple production runs and manual changes
Solution Approach 1:
The blow molding machine implements dynamic configurability where production parameters, heating temperatures, and mold settings can be dynamically adjusted during operation. The control system allows real-time modification of production parameters for different container types without physical reconfiguration, enabling the machine to adapt its behavior dynamically between different product types while maintaining continuous operation.
Solution Approach 2:
The invention utilizes parameter changes by storing different production parameter sets (temperatures, pressures, cycle times, mold settings) in a database and automatically retrieving and applying the appropriate parameters for each container type. The heating device temperature and blow molding parameters are adjusted based on the specific container being produced, allowing multiple container types to be manufactured on the same production run with consistent quality.
2Ease of operation
If the blow molding machine is manually changed over from one container type to another, then the manufacturing precision for each container type is maintained, but the ease of operation is reduced and downtime increases
Solution Approach 1:
The blow molding machine implements self-service through automated parameter retrieval and application. When a different container type is to be produced, the control system automatically retrieves the appropriate production parameters from the database and configures the heating device and mold settings without requiring manual intervention. This self-configuration capability eliminates the need for operators to manually change over between container types.
Solution Approach 2:
The system incorporates feedback mechanisms where the control system monitors the production process and automatically adjusts parameters based on detected conditions. The machine receives feedback about the container type being produced and automatically configures itself accordingly, creating a closed-loop control system that maintains both ease of operation and production continuity.
3Device complexity
If the heating device heats all preforms to the same temperature, then the device complexity is reduced, but the manufacturing precision for different container types deteriorates
Solution Approach 1:
The heating device implements local quality control by providing different temperature zones and adjustable heating parameters for different regions of the preform. The system can apply different temperatures to different parts of the preform based on the specific container type requirements, with each heating zone independently controllable to achieve optimal heating for various container geometries and materials.
Solution Approach 2:
The heating device is segmented into multiple independently controllable heating zones along the preform length. Each zone can be controlled at different temperatures and power levels, allowing the system to accommodate different container types with varying thermal requirements. This segmentation enables precise thermal management without requiring complete redesign of the heating system.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach eliminates the need for manual changes and reduces downtime by enabling the simultaneous production of multiple container types, improving efficiency and productivity while maintaining quality through precise temperature control and treatment parameter adjustments.
Implementation Method 1
a heating device of the blow molding machine being controlled in such a way that the preforms are heated to different temperatures before a blow molding process
Data Source
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AI summary
The method involves operating a blow molding machine, such that two different plastic containers are extracted from the blow molding machine within a production flow. The plastic containers are manufactured from two different premoldings. The molding machine is controlled, such that the premoldings are heated to different temperatures by using a heating wheel (101), where the premoldings are moved on different transport paths. A processing parameter is determined in the machine for processing the premoldings, and different sterilization processes are executed for sterilizing the premoldings. An independent claim is also included for a blow molding machine for manufacturing a plastic container.