Transforming Machine for Converting Sealed Bag Precursors to Open Bags
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Solution Overview
Problem
The existing method of creating pre-opened bags for bag filling machines is costly and inefficient due to the need for additional steps and materials, resulting in larger rolls and higher production costs.
Innovation Solution
A transforming machine that includes a perforation station and a separation station to convert a roll of sealed bag precursors into open bags, reducing the number of steps and materials needed, and allowing for direct feeding into a bag filling machine.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If pre-opened bags are created by forming end perforations and separating perforations in a secondary operation, then bags can be opened for filling, but the roll diameter becomes twice the size of sealed film rolls and costs double
Solution Approach 1:
The patent applies preliminary action by forming end perforations in the sealed bag precursors during the initial film sealing process, before the bags are actually needed. This pre-preparation of perforations allows the bags to be quickly opened later without requiring separate perforation equipment, thus avoiding the need to store large volumes of pre-opened bags while still enabling easy bag opening when needed.
2Ease of operation
If pre-opened bags are created by separating end perforations in a secondary operation, then bags can be opened, but additional manufacturing time and cost are added
Solution Approach 1:
The patent merges the perforation function with the existing film sealing process by integrating a perforation knife into the film sealing apparatus. This combination allows end perforations to be formed simultaneously with the sealing of bag precursors, eliminating the need for a separate secondary operation to create perforations. The merging of these functions reduces manufacturing time and eliminates the need for additional equipment while maintaining the ability to easily open bags when needed.
3Volume of moving object
If rolls of sealed bag precursors are used instead of pre-opened bags, then storage space is reduced, but additional equipment is needed to open the bags
Solution Approach 1:
The patent applies universality by designing the film sealing apparatus to perform multiple functions: it both seals the bag precursors and forms end perforations in them. This multi-functional device eliminates the need for separate perforation equipment while maintaining compact roll storage. The same mechanical structure that creates the sealed bags also creates the perforations, reducing overall device complexity while achieving space-efficient storage.
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 increases productivity by reducing interruptions in the manufacturing process, lowering costs, and enabling the supply of bag opening machines at no cost to users, while maintaining or improving the efficiency of the bag sealing operation.
Implementation Method 1
The pressure roller is operative coupled to a brake
Implementation Method 2
the main drive roller is operative coupled to a clutch
Data Source
AI summary
Methods for changing a strip of sealed bag precursors in to open bags are disclosed. The apparatus used in the method is referred to as a transforming machine and includes a separation station and may include a perforation station and a piercing station. The perforation station forms a plurality of end perforations in the multiple layers of a strip of sealed bag precursors. The separation station separates the plurality of end perforations in at least one film layer of the trip to form a plurality of bag openings. The plurality of end perforation are torn by the separation station, which includes manipulating the rotation of a main roller, a pressure roller and at least one separation roller.