Window Covering Cutting Machine With Compliant Base
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Solution Overview
Problem
Conventional cutting machines for window coverings often produce uneven cuts when cutting cellular shades or slats due to insufficient clamping force, and may damage the blinds or the cutting blade due to excessive force or rigidity, leading to poor cutting quality and blade durability issues.
Innovation Solution
A cutting machine design featuring a machine base with a clamping device that provides consistent pressure and a cutting device with a movable block and stopping block system, allowing for precise control of the cutter's position and automatic waste collection, while the non-rigid pad protects the blade and ensures even cutting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the clamping device provides larger clamping force to firmly press the blinds, then the cutting quality improves, but it may damage some slats of the blinds
Solution Approach 1:
The patent changes the physical state of the supporting surface from rigid to soft/compliant. The soft supporting surface can be compressed under the blind, allowing the clamping device to apply sufficient force to hold the blind firmly against the supporting surface without transmitting excessive force to the slats, thus preventing damage while maintaining good cutting quality.
2Measurement precision
If the blade simultaneously touches the headrail, the bottom rail, and the window covering material before cutting, then the cutting position is accurate, but it makes the user have to exert a large strength to cut the window coverings
Solution Approach 1:
The patent introduces a soft supporting surface as an intermediary between the blind and the machine base. This soft surface deforms under the blind to provide automatic positioning and support, eliminating the need for the blade to simultaneously touch multiple points for accurate positioning. The soft surface absorbs some of the cutting resistance, reducing the effort required by the user.
3Stability of the object's composition
If a rigid machine base is used to sustain the window coverings, then the machine structure is stable, but it would damage the blade after the blade cutting the window coverings several times
Solution Approach 1:
The patent changes the rigidity parameter of the supporting surface from high (rigid) to low (soft). The soft supporting surface reduces the impact and stress transmitted to the blade during cutting operations, preventing blade damage and extending blade life, while the overall machine base remains stable through its rigid frame structure.
Data Source
AI summary
A cutting machine for cutting a window covering includes a machine base and a cutting device provided on the machined base. The machine base includes a sustaining face for putting the window covering thereon. The cutting device includes a frame provided on the machine base, a cutter, a movable block, a stopping block and a connecting bar. The control bar is pivoted on the frame and controllable to pivotally swing and drive the cutter to move up and down. The movable block is moved along with the cutter to drive the connecting bar to pivotally swing relative to the frame. The stopping block is adapted to abut against one end of the window covering to be cut and is further driven by the connecting bar to reciprocate along the machine base.