Sheet Cutting Device with Retractable Conveying Rollers
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Solution Overview
Problem
Existing sheet cutting machines require multiple cutting operations to remove margins from the conveying path when their length exceeds the distance between cutting blades and downstream rollers, leading to reduced efficiency due to the need to pause sheet conveyance during each operation.
Innovation Solution
A sheet cutting machine with a retracting mechanism that allows the second conveying part to be upwardly retracted from the conveying path, enabling the margin to be cut and removed in a single operation by positioning the deflecting plate outside the path, preventing contact with downstream rollers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the margin length is longer than the distance between cutting blades and downstream conveying rollers, then multiple cutting operations are required to remove the margin, but this reduces the productivity of the sheet cutting machine
Solution Approach 1:
The downstream conveying rollers are designed to be movable between a first position (at the conveying path) and a second position (retracted from the conveying path). This dynamic positioning allows the system to adapt its structure based on the margin length, enabling single-cut removal of long margins while maintaining reliable margin removal functionality.
2Productivity
If the downstream conveying rollers are retracted from the conveying path, then long margins can be cut in one operation, but the device complexity increases due to the retracting mechanism
Solution Approach 1:
The downstream conveying rollers are designed to be movable between a first position (at the conveying path) and a second position (retracted from the conveying path). This dynamic positioning allows the system to adapt its structure based on the margin length, enabling single-cut removal of long margins while maintaining reliable margin removal functionality.
Data Source
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AI summary
When a length in a conveying direction of a margin M1 to be cut off is shorter than a predetermined distance X between a cutting part 15 and a second conveying part 16, a sheet cutting machine feeds a first sheet S1 to the cutting part 15 using a first conveying part 14 while keeping the second conveying part 16 positioned at a conveying path G. When the length is equal to or longer than the predetermined distance X, the machine feeds the first sheet S1 to the cutting part 15 using the first conveying part 14 after upwardly retracting the second conveying part 16 from the conveying path G using a retracting mechanism 21.