Elastic Cutting Element for Label Splicing Safety
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Solution Overview
Problem
Existing splicing devices for label tapes pose safety hazards and are costly due to the need for complex and expensive pneumatic systems for cutting, which increases the risk of injury and operational expenses.
Innovation Solution
A splicing device with a movable cutting element prestressed by an elastic element, such as a helical spring, that automatically transitions from a locked to a cutting position upon release, eliminating the need for pneumatics and enhancing safety by retracting the cutting element behind a protective component, allowing for manual operation and electromagnetic actuation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If pneumatic cutting devices are used to cut label tapes, then the cutting function is achieved, but the device complexity and cost increase significantly
Solution Approach 1:
The patent replaces the pneumatic cutting system with a purely mechanical cutting mechanism. A cutting element is mounted on a movable carrier that can be actuated mechanically to perform the cutting function, eliminating the need for complex pneumatic components while maintaining the cutting capability.
Solution Approach 2:
The patent extracts and removes the pneumatic system from the cutting device, keeping only the essential mechanical cutting components. This simplification reduces both device complexity and manufacturing cost while preserving the core cutting function.
2Object-affected harmful factors
If pneumatic cutting devices are used, then cutting is achieved, but the safety risk increases due to exposed cutting elements
Solution Approach 1:
The cutting element is nested within a protective housing structure. The carrier holding the cutting element can be retracted into or protected by the housing, ensuring that the cutting edge is not exposed during operation or maintenance, thereby reducing injury risk without requiring complex safety systems.
Solution Approach 2:
The patent employs a simple, robust cutting element design that can be easily replaced if needed, rather than investing in complex safety mechanisms. The focus is on inherent safety through simple mechanical design rather than complex safety systems.
3Manufacturing precision
If a movable cutting element is used for precise cutting, then cutting precision is improved, but the safety hazard increases when changing label tapes
Solution Approach 1:
The cutting element is pre-positioned on a movable carrier that can be retracted into a protected position before tape changes. This preliminary retraction action ensures the cutting element is not exposed during tape changes, eliminating the safety hazard while maintaining cutting precision when needed.
Solution Approach 2:
The cutting element is mounted on a dynamically movable carrier that can transition between an exposed position for cutting and a retracted position for safety. This dynamic positioning allows the system to adapt its state based on operational requirements, providing both precision and safety.
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 solution provides a safer, more cost-effective splicing process by eliminating pneumatic systems, ensuring reliable and precise cutting at high web speeds without the risk of injury, and simplifying tape changes, reducing operational complexity and costs.
Implementation Method 1
The pretensioning device preferably contains at least one elastic element, preferably a spring, in particular a helical spring or any other elastic element, which pretensions the cutting element in the locking position
Data Source
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AI summary
The invention relates to a cutting apparatus (22a, b) for a label strip, said apparatus having at least one movable cutting element (32a, b) which is pretensioned in an arresting position by a pretensioning device (41a, b), said cutting apparatus having a trigger mechanism (42a, b) for releasing the pretensioning device so as to move the cutting element from the arresting position into a cutting position for separating a label strip, wherein it is retracted behind at least one component (48a, b) of the cutting apparatus in the arresting position. This cutting apparatus allows the label strip to be reliably changed in a splicing apparatus.