Sheet Processing Machine Light Barrier Height Detection
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Solution Overview
Problem
Existing sheet processing machines require time-consuming and complex adjustments of light barriers to measure the height of sheet piles, which is cumbersome and costly, especially when dealing with sheets of varying sizes and shapes.
Innovation Solution
A sheet processing machine equipped with a device comprising a manually displaceable first sensor element and an automatically displaceable second sensor element, forming a light barrier that can be adjusted to measure the height of sheet piles without manual intervention for different sheet sizes and shapes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a light barrier is used to measure sheet pile height, then measurement capability is provided, but complex manual adjustment is required for different sheet sizes and shapes
Solution Approach 1:
The light barrier system is made dynamically adjustable through automated displacement mechanisms. The first sensor element can be manually positioned, while the second sensor element automatically adapts its position relative to the first, allowing the light barrier to dynamically adjust to different sheet sizes and shapes without complex manual intervention for both elements
Solution Approach 2:
The second sensor element performs self-adjustment by automatically displacing itself to the correct position relative to the first sensor element. This self-service capability eliminates the need for operators to manually adjust both sensor elements, reducing operational complexity while maintaining adaptability
2Reliability
If a light curtain with multiple light barriers is used, then complete receiving area monitoring is achieved, but system cost increases significantly
Solution Approach 1:
Instead of using a complete light curtain covering the entire receiving area, the system segments the detection function into a single adjustable light barrier with two sensor elements. This segmented approach provides sufficient detection capability while significantly reducing system cost and complexity
Solution Approach 2:
The single light barrier system is designed to be universally applicable for detecting different sheet sizes and shapes through automated adjustment. This multi-functional capability replaces the need for multiple fixed light barriers, achieving reliable detection with reduced system cost
3Measurement precision
If manual adjustment of light barrier position is required, then measurement accuracy is maintained, but operator training requirements increase
Solution Approach 1:
The system combines manual positioning capability with automated relative adjustment. The first sensor element can be manually positioned to maintain measurement precision, while the automated displacement of the second sensor element simplifies operation, reducing the need for highly trained operators
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution simplifies and reduces the cost of measuring sheet pile height, allowing less trained personnel to operate the machine, reducing downtime between jobs, and enabling easy adaptation to various sheet sizes and shapes.
Implementation Method 1
The light emitting source and the light receiving sensor form a light barrier along the width direction when facing each other
Data Source
AI summary
A sheet processing machine comprises a receiving area (38) for collecting a sheet pile and a device (36) for determining the height of the sheet pile. The device (36) comprises a manually displaceable first sensor element arranged at a first side (48) of the receiving area (38), and an automatically displaceable second sensor element (50) arranged at an opposite side (52) of the receiving area (38) such that the first and second sensor elements (50) are arranged opposite each other along a width direction of the receiving area (38). The first sensor element and the second sensor element (50) are displaceable along a length direction of the sheet receiving area (38), wherein the first sensor element is one of a light emitting source and a light receiving sensor (56) and the second sensor element (50) is the other one of a light emitting source and a light receiving sensor (56). The light emitting source and the light receiving sensor (56) form a light barrier (58) along the width direction when facing each other.