Sawing Machine Piece Handling to Prevent Post-Cut Rotation

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Solution Overview

Problem

Existing sawing machines cause damage and displacement issues when cutting pieces, as the rotation of the first part of a piece on the support plane can lead to incorrect further cuts due to the movement of the second piece, resulting in trapezoidal shapes.

Innovation Solution

A sawing machine with a support plane, pusher system, guiding element, and logic control unit that independently pushes and positions pieces to prevent rotation of the first part after cutting, using detection means and pushing means to ensure precise cutting and correct positioning of the second piece.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If the first piece is guided by the guiding element during advancement, then the positioning precision is improved, but the first part rotates on the support plane after cutting causing damage and displacement

Engineering Contradiction:

Improvepositioning precisionVSAvoidrotation damage

Core Design Contradiction:

Manufacturing precisionVSObject-affected harmful factors

Solution Approach 1:

The pushing means acts on the first part immediately after cutting to push it away from the guiding element before the second piece can cause rotation. This preliminary action prevents the harmful rotation effect from occurring in the first place.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The pushing means applies a counter-action force to prevent the first part from rotating on the support plane. By pushing the first part away from the guiding element, it creates an anti-rotation effect that counteracts the potential harmful rotation caused by the second piece's movement.

Inventive Principle:

Principle #9Preliminary anti-action

2Productivity

If the second piece is pushed independently by the pusher system, then the productivity is improved, but the first part rotates causing the second piece to be displaced

Engineering Contradiction:

Improveindependent pushingVSAvoidcutting accuracy

Core Design Contradiction:

ProductivityVSManufacturing precision

Solution Approach 1:

The system segments the pushing function into two independent parts: the pusher system pushes the second piece forward for productivity, while the pushing means pushes the first part away from the guiding element. This segmentation allows both pieces to be handled independently, preventing the first part's rotation from affecting the second piece's cutting accuracy.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The pushing means acts as an intermediary between the cutting operation and the second piece's movement. It mediates by pushing the first part away from the guiding element, preventing the first part's rotation from transferring to the second piece and causing displacement.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Stability of the object's composition

If the first part remains in contact with the guiding element after cutting, then the positioning is maintained, but the first part rotates causing trapezoidal shapes in further cuts

Engineering Contradiction:

Improvepositioning stabilityVSAvoidcut shape accuracy

Core Design Contradiction:

Stability of the object's compositionVSManufacturing precision

Solution Approach 1:

The pushing means performs a preliminary action by pushing the first part away from the guiding element immediately after cutting. This prevents the first part from rotating during subsequent operations, ensuring that further cuts produce the correct rectangular shape rather than trapezoidal shapes.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system converts the potential harmful effect of the first part's rotation into a beneficial outcome. By using the pushing means to actively push the first part away from the guiding element, the system ensures that the first part's position is controlled in a way that prevents rotation and maintains correct cut shapes, turning a potential problem into a solution.

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

Data Source

PatentEP3964316B1Sawing machine for sawing pieces and method of using it

Publication Date: 2023.12.13 SCM GRP

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Figure 7A~7B

AI summary

The present invention refers to a sawing machine (M) for sawing pieces (P), comprising a support plane (SP) for at least a first piece (P1) and a second piece (P2), in which said first piece (P1) and said second piece (P2) are to be positioned side by side, a pusher system (PS1, PS2) configured to push said first piece (P1) and said second piece (P2) along a forward direction (A), a guiding element (GE), arranged on one side of said support plane (SP), to guide said first piece (P1) when said pusher system (SP1, SP2) pushes said first piece (P1), so that said first piece (P1) has at least one portion of a first lateral surface (S11) in contact with said guiding element (GE) and is arranged between said guiding element (GE) and said second piece (P2), and at least one working station (WS) comprising a cutting unit (GB) for cutting at least said first piece (P1) along a cutting line (C), transversal to said forward direction (A), so that said first piece (P1) is divided into at least a first part (P11) and in a second part (P12). Furthermore, said sawing machine (M) comprises pushing means (PM) for pushing said first part (P11) of said first piece (P1) in a pushing direction (D), transversal to the forward direction (A), so as to move said first part (P11) away from said guiding element (GE).