Manipulator Asynchronous Grasping for Piece Goods Positioning
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Solution Overview
Problem
Existing methods for handling and palletizing piece goods face challenges in achieving precise positioning and high-speed processing without increasing mechanical stress, leading to inefficiencies and increased cycle times due to abrupt speed changes and directional shifts during the transfer of goods between conveyor belts.
Innovation Solution
A method and device that utilize a manipulator to detect and position piece goods moved in a row, employing asynchronous picking and 270° rotational movements to reduce deflections and mechanical loads, allowing for faster operation with maintained precision by minimizing unnecessary movements and collisions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If piece goods are transferred between conveyor belts using speed differences and abrupt changes in speed or direction, then positioning precision can be achieved, but mechanical stresses on piece goods increase and cycle times are extended
Solution Approach 1:
The patent implements dynamic speed adjustment of conveyor belts, where the allocation belt and conveyor belt operate at different speeds during transfer operations. The system dynamically changes belt speeds to smoothly accelerate or decelerate piece goods during transfer, avoiding abrupt speed changes while maintaining precise positioning control throughout the process
Solution Approach 2:
The system changes operational parameters (belt speed, acceleration rate) during the transfer process to optimize performance. By adjusting the speed difference between belts and controlling acceleration rates, the system achieves both gentle handling and precise positioning without extending cycle times
2Manufacturing precision
If piece goods are transferred between conveyor belts using speed differences, then positioning precision can be achieved, but mechanical stresses and component wear increase
Solution Approach 1:
The patent employs dynamic speed control where conveyor belts adjust their speeds during transfer operations. The allocation belt and conveyor belt operate at coordinated different speeds to create smooth acceleration and deceleration profiles for piece goods, eliminating abrupt mechanical stresses while maintaining precise positioning accuracy
Solution Approach 2:
The system optimizes mechanical stress by changing operational parameters (speed, acceleration) during transfer. By carefully controlling the speed difference and acceleration rates between belts, the system achieves gentle handling that protects piece goods and reduces component wear while preserving positioning precision
3Manufacturing precision
If multiple conveyor belts with different speeds are used for piece goods transfer, then positioning accuracy is improved, but device complexity increases
Solution Approach 1:
The patent designs the conveyor system with multi-functional belts that can operate at different speeds and perform multiple functions (transport, positioning, transfer). The allocation belt and conveyor belt are integrated into a coordinated system where each belt serves multiple purposes, reducing the need for additional specialized components and simplifying the overall device structure
Data Source
Figure 1(A)~1(C)
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AI summary
The invention relates to a method and to a device for handling piece goods (2) moved one after the other, which piece goods are transported to a grasping zone (4) of at least one manipulator (5). At least one transported piece good (2) is grasped in the grasping zone, spatially separated from following piece goods (2), and brought into a defined relative target position (P) and target orientation. The invention relates in particular to the asynchronous grasping of piece goods by the manipulator. By rotation of the manipulator (5) or the clamping and/or grasping means (22) of the manipulator about a vertical axis at an angle of rotation of approximately 270°, the at least one grasped piece good is separated from the following piece goods and brought into a relative target position (P) and target orientation. A palletizable layer or a pre-grouping for a palletizable layer is formed by a plurality of consecutive steps.