Laminate Cutting Device Pivot Axis Displacement
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Solution Overview
Problem
Existing cutting devices for laminate floor boards face challenges in minimizing workpiece displacement during cutting, often requiring alignment aids to prevent slipping, and lack reliable mechanisms to maintain the cutting blade in the open position.
Innovation Solution
The cutting device features a pivot axis positioned transversely to the support, with a control cam and link control system ensuring the cutting edge moves perpendicular to the support's extension, and includes a detent spring mechanism to securely hold the cutting blade in the open position, eliminating the need for alignment aids and minimizing workpiece displacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the pivot axis of the cutting knife lies in the plane of the support, then the cutting device can achieve a cutting movement, but the workpiece experiences displacement and slipping during cutting
Solution Approach 1:
The pivot axis is moved from the plane of the support to a position below it, changing the spatial dimension. This allows the cutting knife to pivot in an arc that is perpendicular to the support extension, eliminating the parallel movement component that causes workpiece displacement while maintaining effective cutting action.
2Manufacturing precision
If a fixed stop is provided to prevent workpiece slipping, then workpiece position stability is improved, but the device complexity increases
Solution Approach 1:
The harmful parallel movement component is extracted and eliminated by repositioning the pivot axis below the support plane. This removes the root cause of workpiece slipping, making additional anti-slip stops unnecessary and thereby reducing overall device complexity.
3Ease of operation
If the cutting blade can be freely pivoted, then ease of operation is improved, but unintended closure of the cutting blade occurs
Solution Approach 1:
A detent spring mechanism is implemented to pre-establish a stable open position for the cutting blade. The spring engages with a cam surface to create a detent that holds the blade open before cutting, preventing unintended closure while allowing smooth pivoting when intentionally activated.
4Reliability
If a detent spring mechanism is added to hold the cutting blade open, then reliability is improved, but device complexity increases
Solution Approach 1:
The detent spring mechanism is integrated with the existing cam and pivot assembly. The spring works in conjunction with the cam surface to provide positioning, merging the holding function with the existing structural elements rather than adding completely separate components.
Data Source
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AI summary
The invention relates to a device for cutting a workpiece (8) having the shape of a plate, in particular a laminate floor tile, comprising a frame (1), a support (9) formed by the frame (1) for placing the workpiece (8) thereon, and a cutting knife (2) fastened to the frame, which knife can be pivoted about a pivot axis (3) from an open position into a closed position and enters into the workpiece (8) with an edge (18, 19, 20) thereof. In order to further develop the device in an advantageous manner for use, a pivot axis displacement device (5, 6) is proposed, by which the pivot axis (3), during the pivoting of the cutting knife (2), is displaced substantially parallel to the extension direction of the support (9) such that each cutting point passes perpendicularly through the workpiece.