Robotic Handling Device for Pressed Parts Weight Control
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Solution Overview
Problem
The existing press arrangement handling systems cause damage to fragile pressed parts due to multiple pick-up and drop-off procedures, leading to increased cycle time and delayed feedback of process parameters, particularly weight, which affects production efficiency and quality.
Innovation Solution
A press arrangement handling device with a control device and software algorithm that integrates weight determination directly into the gripping and holding process, allowing for real-time weight feedback and adjustment of pressing parameters without the need for separate scales, using sensors like piezoelectric or strain gauge elements to determine weight values during movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple pick-up and drop-off cycles are used to transport pressed parts, then the parts can be moved through the production process, but the risk of part damage increases
Solution Approach 1:
The patent combines multiple handling operations (pick-up, transport, weighing, inspection) into a single continuous robotic arm operation. The robotic arm holds the pressed part throughout the entire process, eliminating multiple drop-off and pick-up cycles, thereby reducing part damage while maintaining productivity.
Solution Approach 2:
The robotic arm is designed to perform multiple functions: gripping the pressed part, transporting it, positioning it for weighing, and coordinating with the weighing device. This multi-functional approach eliminates the need for separate handling stations, reducing handling cycles and part damage risk.
2Productivity
If multiple pick-up and drop-off cycles are used, then parts can be transported and weighed, but the cycle time increases
Solution Approach 1:
The robotic arm maintains continuous holding and transport of the pressed part without releasing it at intermediate stations. The part is moved continuously from the press to the weighing device and back, eliminating idle time associated with multiple pick-up and drop-off cycles, thereby reducing overall cycle time.
Solution Approach 2:
The robotic arm is positioned and prepared in advance to immediately grasp the pressed part as soon as it is ejected from the press. This preliminary positioning eliminates waiting time and ensures continuous operation, reducing cycle time while maintaining efficient transport.
3Measurement precision
If weight feedback is delayed by 3-4 production cycles, then weighing can be performed, but production efficiency decreases
Solution Approach 1:
The weighing operation is performed immediately after the pressed part is formed, while the part is still being held by the robotic arm. This preliminary weighing captures the weight data at the optimal moment, enabling immediate feedback to the dosing system for the next production cycle, thereby eliminating delays.
Solution Approach 2:
The system implements real-time feedback by measuring the weight of the pressed part immediately after formation and using this data to adjust the dosing parameters for the next cycle. This closed-loop feedback eliminates the 3-4 cycle delay, improving production efficiency while maintaining measurement accuracy.
4Productivity
If a linear axis is used for part removal, then parts can be transported, but additional axes are required complicating the system
Solution Approach 1:
The robotic arm is designed with sufficient degrees of freedom to perform multiple functions: removing the pressed part from the press, transporting it to the weighing device, positioning it for weighing, and returning it. This single multi-functional robotic arm replaces what would otherwise require multiple specialized axes, simplifying the system while maintaining productivity.
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
This solution reduces the risk of part damage, shortens cycle time, and enhances production stability by enabling immediate reaction to weight changes, achieving precise weight control and optimizing the manufacturing process with reduced latency and increased precision.
Implementation Method 1
using sensors like piezoelectric or strain gauge elements to determine weight values during movement
Implementation Method 2
using sensors like piezoelectric or strain gauge elements to determine weight values during movement
Data Source
Figure 1~2
Figure 3~4
AI summary
The invention relates to a press arrangement handling device (20) to which a control unit and/or a software algorithm is assigned, with a gripping and/or holding device for holding and transporting die-cast and/or isostatically produced or pressed parts (13) made from powder and/or granules, and with a weight determination arrangement (30) for detecting a weight (wi) or a value determined during a weight determination of such a pressed part (13) received in the gripping and/or holding device, wherein the control unit and/or the software algorithm is configured for press control of a slip casting press or powder and/or granule press (11) that presses such pressed parts (13) which are received by the gripping and/or holding device after pressing.