Packaging Machine Guide Plate Orientation for Film Width Adaptation
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Solution Overview
Problem
Existing packaging machines require significant space and result in excessive film consumption due to their inability to efficiently handle trays of varying sizes, leading to wasted film and increased costs.
Innovation Solution
A packaging machine with a vertically oriented guide plate and adjustable recesses allows for flexible handling of different film widths, enabling reliable transfer and reduced film waste by adapting the belt conveyor spacing without mechanical changes, and includes a displaceable recess element for continuous adjustment of zero positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a horizontal guide plate with fixed recesses is used, then the film transfer is reliable, but the machine requires large space and cannot adapt to different film widths
Solution Approach 1:
The guide plate is changed from a static horizontal configuration to a dynamic vertical configuration where the second recess can be displaced along the upper edge. This allows the belt conveyor positioning to be adjusted dynamically according to different film widths while maintaining reliable film transfer through the synchronized belt conveyor system.
Solution Approach 2:
The position parameter of the second recess is made variable instead of fixed. By allowing the second recess to be displaced along the upper edge of the guide plate, the system can adapt to different film widths by changing the positioning parameter, thus resolving the contradiction between reliability and adaptability.
2Device complexity
If the belt conveyors are fixed in position, then the machine structure is simple, but film is wasted when packaging smaller trays
Solution Approach 1:
The second belt conveyor is made movable in the transverse direction, allowing its position to be adjusted according to the tray size. This dynamic adjustment enables precise positioning of the film width to match the actual packaging needs, eliminating film waste while maintaining relatively simple machine structure through the use of a displaceable recess element.
Solution Approach 2:
The guide plate with displaceable second recess serves multiple functions: it defines the zero position for different film widths, guides the film accurately, and enables adaptation to various tray sizes. This multi-functional design reduces film waste without significantly increasing device complexity.
3Shape
If the guide plate is horizontally oriented, then the film can be stretched in transverse direction, but the machine footprint is large
Solution Approach 1:
The guide plate orientation is inverted from horizontal to vertical. This inversion changes the direction of film stretching from transverse to longitudinal, while significantly reducing the machine footprint in the transverse direction. The vertical guide plate with displaceable second recess maintains the film stretching capability through the movable second belt conveyor.
Data Source
AI summary
A packaging machine for packaging products to be packaged by means of a stretchable film includes: a film transport device for a film feed to a product to be packaged; a first and a second belt conveyor for transporting the film, the belt conveyors each including a first and a second belt conveyor that are synchronously driven in a film transport direction prescribed by the film transport device and are arranged side by side, at least the second belt conveyor device being movable in a direction perpendicular to a film transport direction; and a movable film guiding element, by which the film is introducible into the film transport device, the film guiding element including a guide plate for guiding the film that has a first recess and a second recess in an upper edge in a vertical direction toward the belt conveyors.