Stamping Transfer Robot Linkage for Fast Stable Sheet Handling
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Solution Overview
Problem
Current automatic robot lines in the automobile stamping industry are limited by the efficiency of sheet transfer between presses, which restricts overall production cycle and cannot meet the demands of increasing automotive output.
Innovation Solution
A high-speed stamping transfer robot with a linkage motion of upper and lower arms, featuring a six-connecting-rod hinged suspension portion, synchronous belt transmission, and rotational motion to maintain sheet horizontality, allowing for compact layout, high-speed transfer, and reduced energy consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional manual transfer method is used, then workers can transfer sheets between presses, but the sheets may be warped, collided and inaccurately located, severely impacting product quality and stamping efficiency
Solution Approach 1:
The patent replaces manual mechanical transfer with an automated robotic system featuring a multi-axis mechanism (Y-axis, Z1-axis, Z2-axis, and mechanical lower arm portion) that uses synchronous belt transmission and rotational connections to achieve precise, controlled sheet transfer, eliminating manual handling issues while maintaining high speed
Solution Approach 2:
The robotic system performs self-controlled transfer operations through automated positioning mechanisms, including the Z2-axis portion that can move vertically and horizontally, and the mechanical lower arm that rotates to precisely place sheets between presses without human intervention
2Productivity
If common automatic robot line with maximum load of 100 kg and maximum arm spread of 3,000 mm is used, then automatic transfer can be achieved, but the production efficiency is limited to 8 times/minute, cannot meeting the needs for efficient production
Solution Approach 1:
The robotic system is divided into distinct functional modules: Y-axis portion for horizontal movement, Z1-axis portion for vertical positioning, Z2-axis portion for combined vertical and horizontal motion, and mechanical lower arm portion for final positioning. This segmentation allows each module to be optimized for high-speed operation while maintaining overall system coordination
Solution Approach 2:
The patent employs dynamic motion control through rotational connections between axes, allowing the robot to adjust its kinematic chain for optimal speed and positioning. The Z2-axis portion can rotate to change the configuration of the mechanical arm, enabling high-speed transfer while adapting to different sheet positions and press configurations
3Productivity
If the robot achieves high-speed transfer, then production efficiency increases, but energy consumption may increase
Solution Approach 1:
The synchronous belt transmission system allows for variable speed control and optimized motion profiles, enabling the robot to operate at high speeds during transfer while using lower speeds during positioning and acceleration phases, thereby reducing overall energy consumption while maintaining high productivity
Data Source
AI summary
A high-speed stamping transfer robot, including a Y-axis portion, a Z1-axis portion, a Z2-axis portion (upper arm), a mechanical lower arm portion and a tooling portion, wherein the Z1-axis portion is fixedly connected to the Y-axis portion; the Z2-axis portion (upper arm) is in rotational connection with the Z1-axis portion and the Y-axis portion and is capable of moving vertically relative to the Z1-axis portion while moving horizontally relative to the Y-axis portion; the mechanical lower arm portion is in rotational connection with the Z2-axis portion (upper arm) and is capable of rotating relative to the Z2-axis portion (upper arm); and the tooling portion is fixedly connected to the mechanical lower arm portion. Through linkage among the respective axis portions, high-speed and high-load stable transfer of sheets between presses can be realized.