Workpiece Removal Sensing for Separation and Fixation Checks
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Solution Overview
Problem
The manual and automated removal of workpiece parts from residual workpieces during processes like punching or cutting of sheet metal is challenging due to the close proximity and potential jamming, leading to production interruptions and damage, necessitating reliable separation and fixation checks.
Innovation Solution
A device with sensor contact elements that detect complete separation by measuring electrical resistance between contact points and a holding device with switchable fixing states, ensuring reliable separation and fixation of workpieces using conductive contact elements and suction pads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If automated removal of workpiece parts is implemented, then productivity increases, but reliability decreases due to jamming and damage risks
Solution Approach 1:
The sensor device performs preliminary detection to check whether the workpiece part is completely separated from the remaining workpiece before removal, and whether the workpiece part is securely fixed to the holding device during transport. This preliminary action prevents jamming and damage by identifying potential problems before they occur, thereby maintaining high automated removal speed while improving process reliability.
2Manufacturing precision
If close proximity removal is performed, then manufacturing precision is maintained, but harmful factors increase due to jamming risks
Solution Approach 1:
The sensor device provides real-time feedback by detecting the separation state between the workpiece part and remaining workpiece, as well as the fixation state during transport. This feedback mechanism allows the system to adjust the removal process dynamically, maintaining precise separation while preventing jamming and damage through continuous monitoring and control.
3Reliability
If separation detection is implemented, then reliability improves, but device complexity increases
Solution Approach 1:
The sensor device is designed to perform multiple functions: detecting separation between the workpiece part and remaining workpiece, detecting fixation state during transport, and providing feedback for process control. By consolidating these detection functions into a single multi-functional device, the patent improves reliability through comprehensive monitoring while minimizing the increase in device complexity.
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
Enhances process reliability by accurately determining separation and fixation states, preventing jamming and damage, and ensuring safe removal of workpiece parts from residual workpieces.
Implementation Method 1
A device with sensor contact elements that detect complete separation by measuring electrical resistance between contact points
Implementation Method 2
a holding device with switchable fixing states, ensuring reliable separation and fixation of workpieces using conductive contact elements and suction pads
Data Source
Figure 1
Figure 2
Figure 3a~4
AI summary
The invention relates to a device (16) for removing an electrically conductive workpiece part (14) from the rest of the electrically conductive workpiece (15), comprising: a holding device (24) which can be moved in a removal direction (Z) and which can be converted between a fixing state for fixing the workpiece part (14) on the holding device (24) and a release state for releasing the workpiece part (14) from the holding device (24). The holding device (24) has at least one first electrically conductive contact element (41) for contacting the workpiece part (14) at at least one first contact point (K1), and the holding device (24) also has at least one second electrically conductive contact element (43) for contacting the workpiece part (14) at at least one second contact point (K2). The device (16) additionally has a sensor device (45) which is designed to check the complete separation of the workpiece part (14) from the rest of the workpiece (15) using the at least one first and second contact element (41, 43) in a first check state (P1) and to check the fixation of the workpiece part (14) to the holding device (24, 25) in the fixing state in a second check state (P2). The invention also relates to a corresponding method.