Blind Rivet Tool Rotation Control for Mandrel Jam Prevention
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Solution Overview
Problem
In production environments, tools such as blind rivet setting devices often experience mandrel jamming due to improper disposal of rivet mandrels, leading to tool failure and reduced durability, especially when not tilted correctly after each riveting process.
Innovation Solution
A tool equipped with a control device that detects and ensures a predetermined angle of rotation is achieved after each riveting process, preventing the rivet mandrel from jamming by only allowing the next process if the mandrel is safely removed into a container, and providing warnings for incorrect tilting or rotation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the blind riveting tool is not tilted backward after each riveting operation, then the operation cycle is shorter and productivity is higher, but a mandrel jam occurs inside causing tool malfunction and reduced reliability
Solution Approach 1:
The control device checks the rotation angle before allowing the next riveting operation to commence. By verifying the mandrel discharge position is correct in advance, the system prevents mandrel jams before they occur, ensuring reliable operation without sacrificing productivity.
Solution Approach 2:
The control device continuously monitors the rotation angle of the tool and provides feedback control. When the correct discharge angle is detected, the system enables the next operation; when incorrect, it prevents operation until proper positioning is achieved, thus maintaining reliability while enabling continuous high-speed production.
2Reliability
If the tool is equipped with rotation detection and control mechanisms, then mandrel discharge reliability is improved, but device complexity increases
Solution Approach 1:
The patent replaces complex mechanical interlocking mechanisms with an electronic control system that uses sensors and a control device to monitor and manage mandrel discharge. This substitution achieves reliable mandrel ejection through electronic angle detection and control logic, simplifying the overall system architecture while maintaining high discharge accuracy.
Solution Approach 2:
The control device monitors the rotation angle parameter and uses it to control the riveting process. By changing from a purely mechanical system to one that incorporates electronic parameter detection and control, the system achieves precise mandrel discharge with simpler mechanical components, reducing overall device complexity while improving reliability.
Data Source
Figure 1
Figure 2~3
AI summary
A tool (10) and a method for treating a workpiece (3; 3, 4) with a tool element (18) of a tool (10) are provided. The tool (10) has a tool element (18) for treating a workpiece (3; 3, 4), and a control device (23) for evaluating a rotation angle (WH; WV, WH) detected by a detection device (233), with which the tool (10) is arranged in space after treatment of the workpiece (3; 3, 4) with the tool element (18) has been carried out, and for enabling the control of the tool (10) depending on whether the tool (10) was arranged in space with a predetermined rotation angle (234) after treatment of the workpiece (3; 3, 4).