Dynamic Receiver Alignment for Preform Transport
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Solution Overview
Problem
In molding machines, heated preforms are prone to deformation due to centrifugal forces during transfer, leading to uneven stretching and potential 'off-center' container formation, which affects the strength and uniformity of the container base.
Innovation Solution
A transport device that aligns preforms relative to centrifugal forces by using a receiver device with adjustable axes and alignment mechanisms, allowing the preform to be positioned at optimal angles to counteract centrifugal and acceleration forces, ensuring stable transport and reduced deformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If preforms are transferred by rotational transport device with modified spacing, then productivity is improved, but preforms undergo acceleration and deformation due to centrifugal force
Solution Approach 1:
The transport device allows dynamic adjustment of the receiver device orientation relative to the transport direction. The receiver device can be tilted at variable angles to align with the resultant force vector (centrifugal force + gravity), enabling the system to adapt to different transport speeds and maintain preform stability throughout the heating and blowing processes
Solution Approach 2:
The invention changes the orientation parameter of the receiver device from fixed to variable. By adjusting the tilt angle parameter, the system optimizes the alignment between the preform's longitudinal axis and the resultant force direction, preventing deformation while maintaining high transport speeds
2Productivity
If preforms are exposed to centrifugal forces during rotation, then productivity is improved, but manufacturing precision deteriorates due to off-center container formation
Solution Approach 1:
The receiver device orientation is dynamically adjusted during the transport cycle. The tilt angle is varied to maintain optimal alignment between the preform and resultant force direction, ensuring that the preform remains centered and properly oriented for subsequent blowing operations, thus preventing off-center container formation
Solution Approach 2:
The system applies preliminary alignment action by pre-positioning the receiver device at the correct angle before the preform enters the critical stretching zone. This preliminary orientation adjustment counteracts the impending centrifugal forces, ensuring the preform maintains its centered position throughout the high-speed transport and blowing process
3Device complexity
If receiver device is fixed in position, then device complexity is reduced, but preform deformation occurs due to misalignment with movement forces
Solution Approach 1:
The receiver device is made dynamically adjustable in terms of its orientation angle relative to the transport direction. This dynamic capability allows the device to align with the resultant force vector (combination of centrifugal force and gravity) at different positions along the curved track, preventing preform deformation without requiring complex overall system redesign
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
The transport device effectively prevents preform deformation and ensures uniform stretching, maintaining the integrity of the container base by aligning the preform's longitudinal axis to minimize the impact of centrifugal forces, thereby enhancing the strength and uniformity of the container.
Implementation Method 1
heated preforms are prone to deformation due to centrifugal forces during transfer
Data Source
AI summary
In a transport device for transporting containers, the transport device includes at least one transport unit movable along a curved track for transporting at least one container in response to a drive unit, the transport unit having a transport component mobile on the track and a receiver device for holding at least one container wherein the receiver device is constructed and arranged to be aligned in response and in relation to at least one movement force imparted upon the receiver device or the container as a result of movement of the transport unit.