Hollow Container Molding Transport Unit and Jetting System
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Solution Overview
Problem
The existing hollow container production devices require a lengthy molding cycle due to the separate transport of the preform mold and plastic sheets, leading to prolonged processing times.
Innovation Solution
A device that integrates a transport unit capable of carrying both parison sheets and an intermediate frame between molds in a single operation, preventing sheet adhesion and incorporating a jetting unit for improved molding accuracy and flexibility in shape and thickness design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the preform mold and plastic sheets are separately transported to the molds, then the transport mechanism can handle each component individually, but the molding cycle time is prolonged
Solution Approach 1:
The patent combines the preform mold and plastic sheets into a single transport unit, allowing both components to be delivered to the molds simultaneously in one operation. This eliminates the sequential separate transport operations, thereby reducing the overall molding cycle time while maintaining proper handling of each component.
2Ease of operation
If the two plastic sheets are carried separately, then each sheet can be positioned independently, but the carrying time increases and sheets may adhere to each other
Solution Approach 1:
The patent introduces an intermediate frame as a carrier that holds both plastic sheets in a spaced-apart configuration. This intermediate structure acts as a mediator that enables independent positioning of each sheet while preventing adhesion between them during transport, and allows both sheets to be moved together in a single operation.
3Reliability
If the intermediate frame holds the pair of parison sheets spaced apart, then the sheets will not adhere during transport, but the frame structure becomes more complex
Solution Approach 1:
The intermediate frame is designed with a segmented structure featuring multiple holding positions that spatially separate the plastic sheets. This segmentation allows each sheet to be held independently at designated locations, preventing adhesion while maintaining a relatively simple overall frame structure that can be integrated into the existing molding system.
4Manufacturing precision
If a jetting unit discharges gas toward the parison sheets, then molding accuracy is improved, but the device complexity increases
Solution Approach 1:
The patent incorporates a jetting unit that utilizes pneumatic principles to discharge controlled jets of gas toward the parison sheets during the molding process. This pneumatic system improves molding accuracy by applying localized pressure or airflow to control sheet positioning and forming, while the jetting mechanism is designed to be integrated efficiently into the existing mold structure.
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 configuration significantly reduces the molding cycle time and enhances the precision and design flexibility of hollow containers produced using parison sheets.
Implementation Method 1
a jetting unit that discharges a jet of gas toward each of the pair of parison sheets from an intermediate frame side of the parison sheet
Data Source
Figure 1A~1C
Figure 2
Figure 3A~3D
AI summary
A hollow container producing device for producing a hollow container using a pair of parison sheets (P, P) is provided. The hollow container producing device includes a pair of molds (2, 3); an intermediate frame (1A) to be clamped to the pair of molds; and a transport unit (5) that carries the intermediate frame (1A) and a pair of parison sheets (P, P) to a position between the pair of molds (2, 3), with the pair of parison sheets (P, P) being respectively held on opposite sides of the intermediate frame (1A).