Plastic Preform Sorting Deflection Mechanism
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Solution Overview
Problem
Existing transport and separation devices for plastic preforms often result in wedging issues, leading to complex mechanisms and temporary stoppages, as they rely on elevating a height guide to eject stuck preforms, which is inefficient and disrupts the flow.
Innovation Solution
A transport and separation device that laterally deflects misaligned or wedged plastic preforms using a deflection device with angled contact surfaces, preventing them from entering the sorting mechanism, thereby avoiding the need to raise the height guide and ensuring continuous flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a height guide is used to separate wedged preforms, then preform separation is achieved, but the mechanism becomes complex and requires temporary stoppages
Solution Approach 1:
The invention transitions from vertical separation (raising height guide) to lateral/ transverse separation (pushing preforms sideways). The deflection device pushes wedged preforms laterally off the transport path, eliminating the need for complex vertical height adjustments while maintaining effective separation.
Solution Approach 2:
The deflection device is positioned upstream of the sorting device to proactively deflect wedged preforms before they reach the sorting mechanism. This preliminary lateral deflection prevents disruptions at the sorting stage and eliminates the need for temporary stoppages.
2Reliability
If a height guide is raised to eject wedged preforms, then separation is achieved, but continuous flow is interrupted
Solution Approach 1:
The deflection device proactively deflects wedged preforms upstream before they can disrupt the sorting process. By performing separation earlier in the transport path, the system maintains continuous flow without interruptions or temporary stoppages.
Solution Approach 2:
The lateral deflection mechanism operates continuously without requiring the system to stop or slow down. Wedged preforms are pushed sideways while the transport device maintains its normal continuous operation, ensuring uninterrupted productivity.
3Productivity
If preforms are transported between rotating rollers, then sorting is achieved, but wedging disturbances occur
Solution Approach 1:
The deflection device acts as an intermediary between the transport rollers and the sorting device. It detects and laterally deflects wedged preforms before they reach the sorting mechanism, preventing disturbances that would otherwise occur during normal roller transport.
Data Source
Figure 1~2
AI summary
A transport and sorting device (1) for plastic containers, and in particular for plastic preforms (10), comprising a transport device (2) which transports the plastic containers (10) along a predetermined transport path (P), and a sorting device (4) arranged along the transport path (P) which is suitable for sorting a portion of the plastic preforms (10) from the transport path. According to the invention, the transport and sorting device (1) has a deflecting device (6) arranged at least partially upstream of the sorting device (4) in the transport direction of the plastic containers, which deflects this portion of the plastic containers transversely to the transport path (P) into an area where these plastic containers (10) can be sorted out by the sorting device (4).