Self-Positioning Screw Starter With Spring Claws
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Solution Overview
Problem
Existing methods for aligning and holding screws in place, especially in confined spaces or without human intervention, are inadequate, as they often require manual dexterity and free hands, which can be limiting in automated assembly or when space is restricted.
Innovation Solution
A self-positioning screw starter with multiple spring claws and a lock/unlock mechanism, combined with a retention band for manual operation, and automated control via air-cylinder or motor, allowing for secure screw alignment and positioning without human hands, using spring force for release.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If manual holding method is used to align and hold screw, then ease of operation is maintained for simple tasks, but it becomes inapplicable when hands are occupied or space is limited
Solution Approach 1:
The screw starter device performs the alignment and holding functions automatically through its mechanical structure. The claws self-position around the screw shaft, and the slider mechanism automatically locks the screw in place without requiring manual dexterity or free hands, making the device self-sufficient in performing tasks that previously required human operators.
Solution Approach 2:
The screw starter acts as an intermediary tool between the screw and the workpiece. It provides a mechanical interface that bridges the gap between automated systems and screw handling, enabling machines to perform tasks that traditionally required human hands while maintaining precision and control.
2Productivity
If automated mechanism is used to control the slider, then productivity and automation extent are improved, but device complexity increases
Solution Approach 1:
The slider mechanism is designed to be dynamically controllable, allowing it to switch between manual and automated operation modes. The mechanical structure accommodates both direct manual manipulation and automated actuation through air cylinders or motors, providing flexibility in control methods while maintaining the same core functional mechanism.
Solution Approach 2:
The slider control system is designed with multi-functionality, capable of being operated manually or automated through various actuation methods. This universal design allows the same basic mechanism to serve different production needs, from simple manual assembly to high-speed automated production lines, without requiring completely different control systems.
3Reliability
If retention band is used in manual operation, then reliability of screw holding is improved, but ease of operation deteriorates due to additional steps
Solution Approach 1:
The retention band is pre-positioned and integrated into the screw starter structure. By preparing the retention mechanism in advance and incorporating it into the basic device design, the system ensures reliable screw holding without requiring complex operational steps during the actual screwing process. The band is already in place to secure the screw, eliminating the need for additional securing actions.
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
Enables reliable and efficient screw alignment and driving in various environments, including automated systems, by securely gripping the screw head and releasing it when necessary, ensuring precise screw placement and tightening.
Implementation Method 1
The spring force can come from the claw itself, or from the external coil spring force.
Implementation Method 2
Self-positioning screw starter with multiple spring claws
Implementation Method 3
securely gripping the screw head
Data Source
AI summary
A self-positioning screw starter has multiple grab claws, a lock/unlock slider with retention band. Claws are designed to be able to open by elastic material or by coil spring. The slide can be operated by hand or by air-cylinder, motor, or other automatic method.