Dunnage Coil Winding With Adjustable Adhesive Tape Application
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Solution Overview
Problem
Existing devices for processing dunnage material strands into coils are complex, leading to increased manufacturing and maintenance costs, limited processing speed due to stopping the winding operation for adhesive tape application, and pose a risk of injury from rotating tines, with adhesive tape requirements being adjustable only to a limited extent.
Innovation Solution
A device with a winding device and adhesive tape dispensing system that applies adhesive tape to the outer end layer of the dunnage material strand after it is wound around the winding center, using a spring-damped adhesive tape pivoting mechanism and linear drives to adjust tape application independently of the coil's radial extension, reducing the need for additional drives and enabling continuous winding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If adhesive tape is applied to the dunnage material strand end using a counter plate and spring plate arrangement, then the adhesive tape can be pressed against the strand end, but the winding process must be stopped and the device complexity increases with multiple drives
Solution Approach 1:
The patent extracts the adhesive tape application function from the winding process by using a separate adhesive tape dispensing device that operates independently. The adhesive tape is applied to the strand end before winding, eliminating the need for complex in-line application mechanisms with multiple drives and counter plates.
Solution Approach 2:
The adhesive tape is applied preliminarily to the strand end before the winding process begins. This preliminary action ensures that the strand end is secured without requiring complex real-time adjustment mechanisms during winding, simplifying the overall device structure.
2Reliability
If the winding process is stopped to apply adhesive tape and strip the coil, then adhesive tape can be applied to the strand end, but processing speed decreases
Solution Approach 1:
The adhesive tape application is performed as a preliminary action before the winding process starts. The strand end is prepared with adhesive tape in advance, allowing the winding to proceed continuously without interruptions for tape application or coil stripping operations.
Solution Approach 2:
The winding process maintains continuous operation by applying adhesive tape before winding begins. This eliminates stop-start cycles for tape application and coil stripping, ensuring continuous productive action throughout the winding process.
3Productivity
If rotating tines are used in the winding device, then the dunnage material strand can be wound around the winding center, but the risk of injury to persons operating the device increases
Solution Approach 1:
The patent removes the rotating tine mechanism from the winding device and replaces it with a spindle-based winding system. The adhesive tape dispensing device is also extracted and positioned separately, eliminating the need for complex rotating components that pose injury risks to operators.
Solution Approach 2:
The rotating tine mechanical system is replaced with a spindle-based mechanism that does not require operators to be in close proximity to rotating parts. The adhesive tape application mechanism is also replaced with a stationary dispensing device, reducing mechanical injury hazards.
4Device complexity
If the distance between the counter plate and winding device is fixed, then the adhesive tape application is simplified, but adhesive tape overrun occurs regardless of coil size
Solution Approach 1:
The adhesive tape dispensing device is designed with dynamic adjustment capabilities that allow the tape application parameters to be optimized based on the specific winding task. This dynamic design enables precise tape application without overrun while maintaining operational simplicity.
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 approach reduces adhesive tape requirement, processing time, and maintenance effort while ensuring secure adhesive application, allowing for adjustable tape usage based on coil size and eliminating the need for an ejector mechanism, thus enhancing safety and efficiency.
Implementation Method 1
spring-damped adhesive tape pivoting mechanism
Implementation Method 2
adhesive tape applied to an outer end layer of the dunnage material strand and extending in the longitudinal direction of the dunnage material strand, for securing the outer end layer to the coil of dunnage material
Data Source
AI summary
An apparatus for processing a strand of dunnage material, such as a coil of dunnage material, may include a winding device configured to wind the strand of dunnage material around a winding center, and an adhesive tape dispenser aligned with the winding device. The adhesive tape dispenser may be configured such that the adhesive tape dispensed by the dispenser is applied to an outer end layer of the strand of dunnage material when the outer end layer is wound around the winding center. The dunnage material may be produced by a dunnage forming machine from a web-shaped starting material, such as a roll or a leporello stack, for example of paper.