Preform Zone Heating for Uniform Container Material Distribution
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Solution Overview
Problem
Existing container production methods fail to precisely adjust heating power of heating elements to achieve a desired temperature profile due to reliance on a single reference temperature measurement, leading to non-uniform material distribution and inefficiencies in container manufacturing.
Innovation Solution
Adjust the heating power of each heating element based on the desired material distribution in different areas of the container body, rather than relying on a single temperature measurement, allowing for precise control of the heating process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If heating power is adjusted based on a single reference temperature measurement, then the control system is simple, but the temperature profile precision deteriorates
Solution Approach 1:
The preform body is divided into multiple heated zones along its axis, with each zone having an independently controllable heating element. This segmentation allows each zone to be heated to a specific temperature based on the desired material distribution, rather than using a single reference temperature for the entire preform.
Solution Approach 2:
Different heating powers are applied to different zones of the preform based on the local material distribution requirements. Each heating element's power is individually adjusted according to the quantity of material in the corresponding formed area, enabling precise local temperature control.
2Ease of manufacture
If heating power is uniformly applied, then the heating process is simple, but the material distribution uniformity deteriorates
Solution Approach 1:
The heating process transitions from a static uniform heating approach to a dynamic differentiated heating approach. The heating power of each element is adjusted according to the specific material distribution requirements of different zones, allowing the system to adapt to varying material quantities in different formed areas.
3Manufacturing precision
If heating power is precisely adjusted for each zone, then the material distribution precision improves, but the device complexity increases
Solution Approach 1:
The system uses the desired material distribution as a feedback basis to automatically adjust the heating power of each zone. By calculating the required heating power based on the quantity of material in each formed area, the system achieves precise temperature control without requiring complex manual adjustment procedures.
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
Enables precise adjustment of heating power to match the desired material distribution, improving the uniformity and quality of container production without the need for trial and error, and reducing defects such as burn marks and overstretching.
Implementation Method 1
heat the body of the preform by means of at least two heating elements, each heating element heating one of the heated zones of the body of the preform
Data Source
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AI summary
The manufacturing process comprises the following steps: - defining two formed zones (20) in a body (16) of the container (1), each formed zone (20) corresponding to a heated zone (32) of a body (28) of the preform (2), - heating the body (28) of the preform (2) by means of at least two heating elements (10), each heating element (10) heating one of the heated zones (32), - deforming the heated preform (2) to form the container (1). The process includes, before the step of heating the body (28) of the preform (2), an adjustment step in which the heating power of each heating element (10) is adjusted according to the amount of material in the formed zone (20) corresponding to the heated zone (32) by each heating element (10).