Rotating Sheet Separation Member for Low-Precision Stacks

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Solution Overview

Problem

Existing sheet materials separation apparatuses require high precision in location and energy to separate laminated sheet materials, especially when the precision of the laminating direction and orthogonal direction is low, leading to increased energy consumption and potential processing machine failures due to sticking sheets.

Innovation Solution

A sheet materials separation-aiding apparatus with a rotatable sheet materials separation-aiding member that creates a gap between sheets by generating an upward moment through an abutment portion, allowing for efficient separation even with low precision, and includes a saw-toothed abutment portion to ensure reliable contact and minimize energy usage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a linearly reciprocating actuator and parallel linkage mechanism are used to curl up the sheet material end, then sheet separation is achieved, but high location precision in the laminating direction is required which increases device complexity

Engineering Contradiction:

Improvesheet separation reliabilityVSAvoidlocation precision requirement

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

Instead of moving the catching mechanism horizontally along the laminating direction to curl the sheet end, the invention inverts the approach by rotating the catching mechanism about a vertical axis. The abutment portion rotates from a retracted position to engage the sheet material end, curling it upward through rotational motion rather than linear reciprocating motion. This inversion eliminates the need for high location precision in the laminating direction while achieving reliable sheet separation.

Inventive Principle:

Principle #13The other way round (Inversion)

Solution Approach 2:

The invention transitions from one-dimensional linear reciprocating motion in the laminating direction to two-dimensional rotational motion about a vertical axis. The catching mechanism rotates in a plane perpendicular to the laminating direction, allowing the sheet material end to be curled by rotational displacement rather than linear displacement. This dimensional change reduces the precision requirements in the original laminating direction.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Manufacturing precision

If the catching mechanism moves up and down with high precision to ensure abutment against the sheet end, then separation is achieved, but energy consumption increases

Engineering Contradiction:

Improvevertical location precisionVSAvoidenergy for moving catching mechanism

Core Design Contradiction:

Manufacturing precisionVSUse of energy by moving object

Solution Approach 1:

Instead of moving the catching mechanism vertically up and down to ensure precise abutment against the sheet end, the invention inverts the approach by rotating the catching mechanism about a vertical axis. The abutment portion engages the sheet material end through rotational motion, and the sheet is curled upward by the lever action of rotation rather than by vertical displacement. This inversion eliminates the need for precise vertical positioning and reduces energy consumption.

Inventive Principle:

Principle #13The other way round (Inversion)

Solution Approach 2:

The catching mechanism is designed to engage the sheet material end automatically through its rotational motion. As the abutment portion rotates into engagement, it naturally contacts the sheet end and initiates the curling action through its geometric configuration and lever arm, without requiring precise vertical positioning or additional actuation forces.

Inventive Principle:

Principle #25Self-service

3Measurement precision

If a support plate is provided to impart resistance to ascending sheet materials, then location precision in orthogonal direction is improved, but energy consumption increases

Engineering Contradiction:

Improveorthogonal location precisionVSAvoidenergy for moving sheet materials

Core Design Contradiction:

Measurement precisionVSUse of energy by moving object

Solution Approach 1:

Instead of providing a support plate that resists the ascending motion of sheet materials to maintain orthogonal position, the invention inverts the approach by using rotational motion of the catching mechanism. The abutment portion rotates to engage the sheet end, and the rotational geometry naturally maintains proper positioning without requiring resistive support. This eliminates the energy loss associated with overcoming friction and resistance from support plates.

Inventive Principle:

Principle #13The other way round (Inversion)

Data Source

PatentUS9908725B2Sheet material separation-aiding apparatus

Publication Date: 2018.03.06 OYABE SEIKI CO LTD

AI summary

An object of the invention is to provide a sheet materials separation-aiding apparatus capable of creating a gap between a specific sheet material and a sheet material coming into contact with the lower surface thereof even when the location precision of a stack of laminated sheet materials is low in the height direction of the stack of laminated sheet materials and in the direction orthogonal to the height direction.