Quick Change Assembly Slider Mechanism for Coil Winding Spindles
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Solution Overview
Problem
Existing quick change assemblies for coil winding machines are complex, bulky, and costly, with high axial resistance requiring precise machining and complex designs, making them difficult to use and expensive to produce, especially for high-speed applications.
Innovation Solution
A quick change assembly with a slider mechanism that allows effortless engagement and disengagement of the pin without axial resistance, featuring a sliding slider that axially retains the pin and provides rotational lock, using a resilient member to keep the slider engaged and a single centering reference for precise alignment, reducing the assembly's axial dimension and complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If lever-type quick change assembly with pivotable levers and conical piston is used, then the pin can be retained in locking position, but the overall dimensions of the body increase and the design becomes more complex
Solution Approach 1:
The patent removes the complex pivotable lever mechanism and conical piston from the quick change assembly, retaining only the essential pin and body components. The retention function is achieved through a simpler geometry-based locking approach where the pin's cylindrical shape engages with corresponding features in the body, eliminating the need for moving lever parts while maintaining reliable pin retention.
Solution Approach 2:
Instead of using active retaining mechanisms (levers that actively grip the pin), the patent employs a passive retention system where the pin's own geometry and the body's recess features work together to maintain locking position. The retention is achieved through the相互配合 of the pin's cylindrical surface and the body's corresponding recess, rather than through active mechanical engagement of separate retaining components.
2Reliability
If ball-type quick change assembly with spheres and strong springs is used, then the pin can be locked reliably, but axial displacement is required for disengagement and the design becomes bulky
Solution Approach 1:
The patent eliminates the ball-type locking mechanism with spheres and strong springs, replacing it with a direct cylindrical engagement between the pin and body. The pin's cylindrical surface engages with a corresponding cylindrical recess in the body, providing reliable locking without requiring axial displacement of springs or displacement of ball elements for engagement and disengagement.
Solution Approach 2:
The patent divides the quick change assembly into distinct functional segments: the pin as a separate removable element and the body as the stationary component with integrated recess features. This segmentation allows the pin to be quickly inserted and retained without requiring axial movement of spring-loaded elements, reducing the overall axial dimension while maintaining reliable locking through the pin-body engagement interface.
3Strength
If elastic clamp type assembly with high axial thrust is used, then the pin can be gripped firmly, but manual activation becomes impossible and automatic operation is required
Solution Approach 1:
The patent removes the elastic clamp mechanism that generates high axial thrust, replacing it with a geometry-based retention system. The pin is retained through the complementary cylindrical shapes of the pin and body recess, providing firm grip without requiring high axial forces. This allows manual insertion and retention of the pin without the need for powerful elastic clamps or automatic activation mechanisms.
4Manufacturing precision
If two separate centering references are used for pin and spindle alignment, then precise angular centering can be achieved, but expensive machining with two separate fixations is required
Solution Approach 1:
The patent combines the centering reference function into a single integrated feature on the body rather than using two separate references. The cylindrical recess in the body serves as a unified centering element that simultaneously guides both the pin and the spindle alignment, eliminating the need for two separate fixation operations during machining while maintaining precise angular centering through the cylindrical geometry.
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
The solution enables rapid, effortless engagement and disengagement, simplifies the design, reduces costs, and allows high-speed operation above 20,000 rpm, while ensuring precise alignment and compatibility with both manual and automatic operations.
Implementation Method 1
a resilient member to keep the slider engaged
Data Source
Figure 1
Figure 2
Figure 3~5
AI summary
Quick change assembly for a coil winding machine, comprising an engaging body (1) to be fixed to a spindle of the winding machine, and a pin (2) engageable in said body (1) along an axis (A-A) of engagement and without a resilient opposition, wherein the assembly also comprises a slider (4) slidable in a respective seat (5) of the body (1), in a direction (B-B) perpendicular to the axial direction (A-A) of engagement of the pin, said slider being formed so as to engage the pin and releasably retain the pin inside the body.