Pile Sheet Remover with Segmented Attack Knives
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Solution Overview
Problem
Existing pile sheet remover systems often manually remove damaged sheets, which can disrupt the alignment of the pile and lack secure insertion between sheets, and do not provide clear marking of the last sheet in the pile.
Innovation Solution
A pile sheet remover system with a moving frame, grab plate, and attack knives that allow for linear and transverse movements to automatically remove sheets without damaging them, along with a marking unit to identify the last sheet in the pile, enabling secure and efficient processing preparation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a large attack knife is used to support the seized partial stack, then the gripping and retention of sheets is improved, but the secure insertion between sheets deteriorates due to increased risk of damaging the sheets
Solution Approach 1:
The patent divides the single large attack knife into multiple smaller attack knives (first attack knife and second attack knife). The first attack knife has a smaller size for safe insertion between sheets, while the second attack knife provides additional supporting strength. This segmentation allows each knife to have optimized dimensions for its specific function, resolving the contradiction between support strength and sheet damage risk.
2Adaptability or versatility
If manual sheet removal is performed, then flexibility in handling damaged sheets is improved, but productivity deteriorates due to time-consuming operations
Solution Approach 1:
The system enables automatic sheet removal through the coordinated action of the attack knives, grab plate, and actuators. The attack knives automatically insert between sheets, the grab plate automatically grips the sheets, and the system automatically removes damaged sheets without manual intervention. This automation maintains adaptability while dramatically improving productivity.
3Reliability
If sheets are removed from the pile, then damaged sheets can be eliminated, but pile alignment deteriorates due to shifting or disturbance of the pile
Solution Approach 1:
The system applies local quality by using the side support plate to maintain the overall pile structure while the attack knives operate locally at specific insertion points between individual sheets. The grab plate then selectively grips only the sheets to be removed. This localized approach allows damaged sheets to be removed while preserving the alignment and stability of the remaining pile.
4Ease of operation
If the attack knife is inserted between sheets, then sheet separation is improved, but the complexity of the system deteriorates due to additional actuators and control mechanisms
Solution Approach 1:
The patent merges multiple functions into integrated components. The attack actuators are combined with the attack knife assembly, the grab actuator is integrated with the grab plate, and the side support plate provides both support and positioning functions. This merging reduces the number of separate components and simplifies the control system while maintaining effective sheet separation capability.
Data Source
Figure 1
Figure 2A~2B
Figure 2C~2D
AI summary
Disclosed is a pile sheet remover system (PSR) for preparing a pile of sheets with a height, a free end, and a side of sheet edges for processing in a pile preparation unit (PPU). The PSR comprises a sheet removing unit having a support frame supporting a moving frame, configured for a linear movement in an attack direction towards the side and the free end of the pile of sheets. The moving frame has a side support plate with a side support face arranged to face and apply to the side of the pile of sheets. The PSR has a grab plate arranged with a grab face essentially perpendicular to the side support face and extending beyond the side support face in the attack direction, configured with a grab actuator for a grab movement towards the free end of the pile of sheets. The PSR has one or more attack knives arranged below the grab plate to face the side of the pile of sheets, and configured with one or more attack actuators for a first attack movement in the attack direction for insertion of the one or more attack knives between a pair of sheets, i.e. between two adjacent sheets.