Workpiece Conveyance Lever Structure for Pivot Load Dispersion
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Solution Overview
Problem
Conventional workpiece conveyance devices exert heavy loads on pivot shafts, leading to inefficiencies and potential mechanical stress.
Innovation Solution
The design disperses the load of the lever portions across multiple support points, using a combination of pivotable and slidably supported lever units, with drivers to pivot and slide the levers in coordinated directions, reducing the load on pivot shafts and enabling efficient workpiece conveyance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the entire arm load is concentrated on a single pivot shaft at the proximal end of the first lever portion, then the structure is simple, but the load on the pivot shaft becomes heavy
Solution Approach 1:
The support structure is segmented into multiple pivot shafts (first pivot shaft at proximal end, second pivot shaft at distal end) that share the load. The first lever portion is divided into segments supported at different locations, distributing the arm load across multiple support points rather than concentrating it at a single pivot shaft.
Solution Approach 2:
A second lever portion is introduced as an intermediary element between the first lever portion and the support member. This intermediate lever, supported by a second pivot shaft, acts as a mediator to distribute the load from the arm across multiple support points, reducing the burden on any single pivot shaft.
2Force
If multiple support points are used to disperse load, then the load on pivot shafts is reduced, but the device complexity increases
Solution Approach 1:
The first lever portion and second lever portion are merged into a coordinated lever system where the distal end of the first lever connects to the proximal end of the second lever. This merging allows load distribution across multiple pivot shafts while maintaining a unified mechanical structure that efficiently conveys workpieces.
Solution Approach 2:
The lever unit with multiple support points serves multiple functions: it distributes load across pivot shafts, provides stable support for the arm, and enables smooth workpiece conveyance. This multi-functionality justifies the increased structural complexity by delivering multiple benefits simultaneously.
3Force
If the lever portions are supported at two positions, then the load is dispersed, but the mechanism complexity increases
Solution Approach 1:
The lever portions are arranged in a nested configuration where the first lever portion and second lever portion connect end-to-end, forming a compact articulated structure. This nesting allows the multi-supported lever system to maintain a space-efficient design while achieving load dispersion across multiple pivot shafts.
Data Source
AI summary
A workpiece conveyance device is used for a pressing device. The workpiece conveyance device includes a support member supporting a holding component usable to detachable hold a workpiece, a lever unit including a first lever portion and a second lever portion, a lever unit support body supporting the lever unit, a first lever support portion provided to the lever unit support body, and a second lever support portion provided to the lever unit support body. The second lever portion is provided between the first lever portion and the support member. The second lever portion is rotatably linked to the first lever portion. The lever unit pivotably supports the support member. The first lever support portion pivotably supports the first lever portion. The second lever support portion slidably and pivotably supports the second lever portion.