Stick Curvature Correction Using Optical Detection and Rollers
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Solution Overview
Problem
Existing stick curvature correction devices are complex and expensive, relying on motors to detect and remove curved sticks, with severely curved sticks often being discarded without correction.
Innovation Solution
A stick curvature correction device with a curvature detection unit using two-end push-up units and a multi-point sensor to determine stick curvature, a center push-up unit to adjust the stick's bow state, and a stick correction unit with guide and correction rollers to apply force opposite to the curve direction for correction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a motor is used to rotate the stick bending amount measuring unit in the vertical plane, then the bending amount of the stick can be measured, but the device becomes complicated and expensive
Solution Approach 1:
The patent replaces the motor-driven mechanical rotation system with a non-contact optical measurement system. The laser displacement sensor measures stick curvature directly by detecting light reflection patterns, eliminating the need for motors, rotating mechanisms, and complex mechanical assemblies while maintaining measurement capability.
Solution Approach 2:
The patent uses optical reflection patterns as a copy or representation of the stick's curvature state. By analyzing the reflected light pattern from the stick surface, the system indirectly measures bending amount without physical contact or mechanical movement, simplifying the overall device structure.
2Productivity
If curved sticks are simply detected and removed, then the measurement process is simple, but severely curved sticks are discarded without correction
Solution Approach 1:
The patent performs preliminary curvature measurement and classification before final disposition decisions. By measuring all sticks and categorizing them by curvature severity, the system identifies which curved sticks can be corrected and which should be discarded, preventing premature rejection of usable material.
Solution Approach 2:
The patent separates the discarding function from the measurement function. Curved sticks that exceed correction capabilities are discarded, while those within correction range are routed to the correction mechanism, thereby recovering usable stick material that would otherwise be wasted.
3Ease of manufacture
If manual correction is used for curved sticks, then correction can be performed, but labor costs increase and severely curved sticks are still discarded
Solution Approach 1:
The patent implements an automated correction system where the stick correction unit mechanically applies force to curved sticks based on measured curvature data. The system self-regulates the correction process without human intervention, continuously processing sticks through measurement, classification, and correction cycles.
4Device complexity
If a simple detection structure is used, then device cost is reduced, but the ability to determine curvature accurately may be compromised
Solution Approach 1:
The patent substitutes complex mechanical measurement mechanisms with a simplified optical sensing system. The laser displacement sensor provides accurate curvature measurements through non-contact optical detection, achieving high measurement precision with minimal mechanical components.
Solution Approach 2:
The patent introduces light as an intermediary medium between the measurement system and the stick. The laser displacement sensor uses light reflection patterns as an intermediary to indirectly measure stick curvature, enabling accurate detection without direct mechanical contact or complex measurement mechanisms.
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
Enables simple and effective determination and correction of stick curvature, reducing the need for manual correction and discarding of severely curved sticks.
Implementation Method 1
two-end push-up units configured to push up two ends of the stick in order to cause a curved stick to axially rotate to be in a valley bow state
Implementation Method 2
a laser displacement sensor unit configured to receive reflected light of a laser light
Implementation Method 3
center push-up unit configured to cause the curved stick to axially rotate to be in a mountain bow state, and push up a part between one end and a center of the stick
Implementation Method 4
correction roller unit configured to apply a force in the direction opposite to the curve direction of the stick
Data Source
AI summary
Provided is a stick curvature correction device that can determine a curvature of a stick with a simple structure and correct a curvature of a curved stick. The stick curvature correction device includes a curvature detection unit, a center push-up unit, a stick holding unit, and a stick correction unit. The curvature detection unit includes two-end push-up units, and a multi-point sensor unit. The center push-up unit causes a curved stick to axially rotate to be in a mountain bow state, and pushes up a part between a left end and a center of the stick. The stick holding unit holds the right end of the stick, and holds the stick slidably in a direction of the left end of the stick. The stick correction unit applies a force in a direction opposite to a curve direction of the put stick and corrects a curvature of the curved stick.