Flexible Accommodation Member Weighted Unwinding Mechanism
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Solution Overview
Problem
Existing processing devices face challenges in normal unwinding of the sheet-like accommodation member due to material or flexibility issues, leading to insufficient medium accommodation.
Innovation Solution
A processing device with a flexible sheet-like accommodation member, a pivot shaft, an operation portion, and support portions that allow the accommodation member to be wound around the pivot shaft and unwound to accommodate media, with a weight positioned to facilitate effective unwinding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the accommodation member is made flexible and sheet-like to enable winding and unwinding, then the medium can be accommodated effectively, but the accommodation member may not unwind normally due to material or flexibility issues
Solution Approach 1:
The patent changes the physical parameters of the system by introducing a weight to alter the gravitational force acting on the accommodation member. This parameter change ensures that the gravitational force is sufficient to overcome friction and initiate unwinding, while the weight's position on the intermediate position prevents excessive force that could cause jumping or catching. This resolves the contradiction by adjusting physical parameters to achieve both flexibility and reliable unwinding.
Solution Approach 2:
The patent applies the principle of equipotentiality by positioning the weight at an intermediate position between the pivot shaft and the free end of the accommodation member. This positioning creates a balanced gravitational effect that ensures uniform unwinding force distribution, preventing both insufficient unwinding and excessive jumping. The weight's strategic placement equalizes the forces involved in the unwinding process, achieving reliable operation.
2Ease of operation
If the accommodation member is unwound from the pivot shaft to accommodate medium, then medium accommodation is enabled, but the accommodation member may jump up vigorously and be caught by operation portion at initial stage
Solution Approach 1:
The patent introduces a weight as a new parameter to control the unwinding dynamics. By carefully selecting the weight's mass and positioning it at an intermediate position, the gravitational force is optimized to provide just enough force to initiate unwinding without causing excessive acceleration. This parameter control prevents the accommodation member from jumping up vigorously while still enabling easy unwinding operation.
Solution Approach 2:
The weight acts as an intermediary element between the pivot shaft and the free end of the accommodation member. It mediates the unwinding process by providing a controlled gravitational force that smooths out the initial unwinding action. This intermediary prevents direct, uncontrolled movement of the accommodation member, eliminating the jumping and catching problems while maintaining ease of operation.
3Force
If frictional resistance is high compared to mass of accommodation member, then accommodation member cannot drop properly, but unwinding amount becomes insufficient
Solution Approach 1:
The patent changes the force parameter by introducing a weight with specific mass and positioning it at an intermediate position. This creates an optimized gravitational force that is sufficient to overcome frictional resistance without being excessive. The weight's position ensures that the force is applied at the right leverage point, enabling the accommodation member to drop and unwind adequately, thus resolving the contradiction between sufficient force and adequate unwinding amount.
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 ensures reliable unwinding of the accommodation member, preventing unwinding failures and ensuring efficient medium accommodation by leveraging the weight's gravity to guide the unwinding process.
Implementation Method 1
holds a weight on the other end side of an intermediate position between the one end and the other end in the advance and retreat direction
Data Source
AI summary
A processing device includes a processing unit and a medium accommodation portion, and the medium accommodation portion includes a flexible sheet-like accommodation member, a pivot shaft to which one end of the accommodation member is coupled, an operation portion to which the other end of the accommodation member is coupled and that is provided separably from the pivot shaft, and a pair of support portions that supports both ends of the operation portion, and the accommodation member is wound around the pivot shaft and stored inside the housing when the operation portion approaches the pivot shaft, and is unwound from the pivot shaft and hung down to accommodate the medium when the operation portion is separated from the pivot shaft, and holds a weight closer to the other end than to an intermediate position between the one end and the other end in the advance and retreat direction.