Inserter Machine Tray Synchronization and Masking
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Solution Overview
Problem
Existing insertion machines face challenges in accurately and efficiently inserting limp products, such as meat slices, into trays without causing tilting or contamination, leading to potential deformation and leakage issues due to relative speed and liquid droplets during high-speed insertion.
Innovation Solution
The insertion machine synchronizes the movement of the tray with the product in the throughput direction to minimize relative speed at ejection, and uses a mask to cover the tray edge, preventing liquid from reaching the seal, ensuring accurate placement and preventing leaks by moving with the tray and having an absorbent layer to catch any drips.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the product is moved quickly over the discharge edge to reduce tilting moment, then the product lands flat in the tray, but the relative speed between product and tray increases causing deformation
Solution Approach 1:
The patent applies the dynamics principle by making the tray movable rather than stationary. The tray is accelerated to match the product ejection speed, creating a dynamic system where both product and tray move at the same velocity during the critical insertion phase. This eliminates relative speed between product and tray, allowing high-speed ejection without deformation or placement errors.
Solution Approach 2:
The patent creates an equipotential state in terms of velocity between the product and the tray. By synchronizing the tray's movement speed with the product's ejection speed, both objects exist in the same velocity state during insertion, eliminating the harmful velocity differential that would otherwise cause deformation or inaccurate placement.
2Productivity
If the product conveyor speed is increased to improve efficiency, then more products can be inserted per unit time, but liquid from wet products splashes onto the tray edge causing sealing failures
Solution Approach 1:
The patent introduces a mask as an intermediary element between the product and the tray edge. The mask is positioned to cover the tray opening and extend below the product ejection level, creating a physical barrier that intercepts liquid droplets before they can reach the tray edge. This allows high-speed insertion of wet products without contamination, as the mask absorbs or redirects the liquid away from critical sealing areas.
3Reliability
If a mask is used to prevent liquid contamination, then sealing integrity is improved, but the mask must be precisely positioned and removed between cycles adding complexity
Solution Approach 1:
The patent merges the mask positioning function with the existing tray conveyor system. The mask is mounted on the movable tray carrier rather than requiring a separate positioning mechanism. When the tray carrier moves to insert the tray, the mask automatically moves into the correct position; when the tray is removed, the mask automatically returns to its starting position. This integration eliminates complex independent positioning and removal mechanisms while maintaining reliable sealing protection.
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 solution allows for high-speed insertion of products without deformation and reduces the risk of leaks by ensuring products land flat and liquid is contained, enhancing the efficiency and sealing integrity of the packaging process.
Implementation Method 1
the receiving tray underneath is moved along with the product in the throughput direction, preferably at the same speed as the ejected product has at the time of ejection - this means that the relative speed in the throughput direction can be between Product and tray are reduced to zero so that the mostly limp product lands on the bottom of the tray without being deformed or curled there by relative speed
Implementation Method 2
the edge of the tray is therefore covered by a mask which is arranged above it and prevents liquid droplets from hitting the tray
Implementation Method 3
there is an absorbent layer at the bottom of the tray which, in the event of drops of liquid penetrating through the mask, absorbs these and prevents them from reaching the upper side of the edge of the tray
Data Source
Figure 1a
Figure 1b
Figure 2a
AI summary
In order to automatically place marinated meat slices into trays (2) at a high throughput rate, for example, they are dropped at high speed over a fixed discharge edge (7a) of the product conveyor (7), whereby the corresponding tray (2) is moved in the direction of travel (10) under the discharge edge (7a), and the upper edge (2a) of the tray (2) is covered by a mask (4) which prevents contamination of the edge (2a) of the tray (2) by impacting liquid droplets (6), so that the subsequent tight sealing of the sealing film (3) is possible without problems.