Rotating Stacking Face for Sheet Integrity
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Solution Overview
Problem
Existing sheet stacking devices face issues with irregular stacking and deformation of folded sheets due to flat stacking faces and inadequate handling mechanisms, leading to difficulties in handling and accommodating sheets of varying sizes.
Innovation Solution
The device incorporates a sheet discharging mechanism that drops folded sheets in a crossing direction along a regulating face, using a rotating supporting face and a blade member to maintain sheet posture and prevent deformation, allowing for uniform stacking and easy retrieval.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If folded sheets are dropped onto a flat stacking face, then the stacking process is simple, but the sheets are deformed or broken at lower ends due to dropping shocks
Solution Approach 1:
A cushioning member is provided at the lower end of the stacking face to absorb the impact energy when folded sheets are dropped onto the stacking area. This cushioning member prevents deformation and breakage of sheet ends while maintaining the simplicity of the stacking process, directly resolving the contradiction between ease of operation and sheet integrity.
2Device complexity
If a flat stacking face is used, then the structure is simple, but stacked sheets are closely adhered to the stacking face with no space for user hands
Solution Approach 1:
The stacking face is designed to rotate about a horizontal axis, transforming from a static flat surface to a dynamic adjustable surface. When sheets are stacked, the face remains flat for simplicity; when sheets need to be retrieved, the face rotates to lift sheets, creating space for user hands. This dynamic transformation resolves the contradiction between structural simplicity and operational convenience.
3Ease of operation
If the stacking face is inclined to prevent adhesion, then sheet retrieval is easier, but sheets may slide off during stacking
Solution Approach 1:
The stacking face rotates between a horizontal position during stacking (providing stability) and an inclined position during retrieval (providing ease of operation). This dynamic reconfiguration allows the system to adapt its geometry based on the operational phase, resolving the contradiction between stacking stability and retrieval convenience without requiring a permanently inclined surface.
4Device complexity
If folded sheets are discharged with creases front and rear at the end, then the discharge mechanism is simple, but sheets drop irregularly into the accommodating area
Solution Approach 1:
A guide member is introduced as an intermediary element between the discharge port and the stacking face. This guide member directs and regulates the trajectory of folded sheets as they are discharged, ensuring they land uniformly on the stacking face in a regular pattern. The guide member adds minimal complexity to the discharge mechanism while significantly improving stacking regularity.
Data Source
AI summary
According to the present invention, a stacking face (84) is inclined such that a downstream side in a sheet discharging direction is lower, and is composed of a first supporting face (84a) supporting a sheet to be stacked at its front end part in a sheet discharging direction and a second supporting face (84b) supporting the sheet to be stacked at its rear end part in the sheet discharging direction. The first supporting face (84a) is structured to be shorter than ½ of a minimum size length of the sheet to be stacked, and this is provided rotatably upward around a rotating shaft (85x) furnished to a registration part (85r) of regulating the front ends of the sheets. The first supporting face (84a) raises the front ends of the sheets to be discharged by rotation of the registration part (85r).