Conveying Device Linkage Mechanism Area Reduction
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Solution Overview
Problem
Existing conveying devices for workpieces in robot systems occupy a large area and have complex structures due to the need for precise movement and interlocking mechanisms.
Innovation Solution
A conveying device with a simplified structure that uses a first link, a second link, and a third link to move a holder part between two points, reducing the occupied area and simplifying the movement mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If an interlocking mechanism with belt drive is used to rotate the first link body and second link body, then the workpiece can be conveyed between processing area and loading area, but the structure for driving the link bodies becomes complicated
Solution Approach 1:
The patent extracts and eliminates the complex belt drive interlocking mechanism from the system. Instead of using a motor with belt drive to rotate both link bodies, the invention uses a simpler direct drive approach where the motor directly rotates the first link body, and the second link body is driven through a gear mechanism, thereby simplifying the overall structure while maintaining the conveyance function.
Solution Approach 2:
The patent replaces the belt drive mechanical system with a gear-based mechanical system. The gear mechanism provides a more compact and simpler structure compared to the belt drive, reducing structural complexity while achieving the same rotational driving function for the link bodies.
2Manufacturing precision
If a conventional conveying device with multiple links and interlocking mechanisms is used, then precise movement of the holder part can be achieved, but the occupying area becomes large
Solution Approach 1:
The patent applies a nested structure where the second link body is positioned inside or adjacent to the first link body during rotation. The holder part moves through a compact path that utilizes the space within the radius of the processing position, effectively nesting the motion path within a smaller area while maintaining precise movement control.
Solution Approach 2:
The patent changes the motion path from a conventional large-area arc rotation to a more compact three-dimensional path. The holder part moves in a combination of radial and tangential directions, utilizing vertical and radial dimensions to achieve precise positioning within a smaller horizontal footprint, thereby reducing the occupying area while maintaining movement precision.
Data Source
AI summary
A conveying device includes a first link that includes a first connecting part, a second connecting part, and a first holder part located opposite the second connecting part with respect to the first connecting part, a second link that includes a third connecting part rotatably connected with the first connecting part, and operates to rotate the third connecting part about a first reference point, a third link that includes a fourth connecting part rotatably connected with the second connecting part and operates to rotate the fourth connecting part about a second reference point, and a first drive that operates the links. The links move the first holder part between a first point and a second point opposite each other with respect to the first reference point so that the first holder part approaches the first reference point in association with operation of the second link.