Spinning Machine Load Carrier Bridge Compression Spring
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Solution Overview
Problem
Existing load carriers for top rollers in spinning machines face suboptimal pressure conditions due to the division of pressure between the output top roller and the pinch roller, leading to unfavorable spinning results.
Innovation Solution
A load carrier with a guide rail and rotatable bridge, where a compression spring is arranged in the guide rail or bridge openings, allowing for independent adjustment of pinch roller pressure and easy retrofitting, ensuring consistent and defined force application to the pinch roller.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If the load carrier presses the output top roller onto the lower output roller, then the drafting system maintains proper roller contact, but the pressure is divided between the output top roller and the pinch roller, creating unfavorable pressure conditions
Solution Approach 1:
The patent divides the pressure application function into two independent systems: the load carrier handles roller contact pressure through the bridge mechanism, while the compression spring independently handles pinch roller pressure. This segmentation allows each component to optimize its pressure application without interfering with the other, resolving the contradiction between maintaining roller contact and ensuring adequate pinch roller pressure.
Solution Approach 2:
The compression spring acts as an intermediary element that specifically targets the pinch roller pressure requirement. By introducing this intermediate force application mechanism, the system can independently adjust pinch roller pressure without affecting the load carrier's roller contact pressure, thus resolving the pressure division problem.
2Manufacturing precision
If the pinch roller pressure is increased to improve fiber compression, then the spinning quality improves, but the pressure division issue creates unfavorable conditions that prevent optimal pressure application
Solution Approach 1:
The patent segments the pressure control functions so that the compression spring exclusively controls pinch roller pressure, independent of the load carrier's roller contact pressure. This allows optimal pressure to be applied to the pinch roller for improved fiber compression and spinning quality, without being compromised by the pressure division issue in the integrated system.
3Manufacturing precision
If the load carrier design is modified to improve pressure distribution, then the spinning result optimizes, but the device complexity increases
Solution Approach 1:
The patent adds only a single compression spring element to the existing load carrier structure, segmenting the pressure control function without requiring complex redesign of the entire load carrier. This minimal addition achieves optimal spinning results while keeping the increase in device complexity to a minimum.
Solution Approach 2:
The compression spring serves as a simple intermediary component that introduces independent pressure control capability without requiring complex structural modifications to the load carrier. This intermediary element achieves the desired spinning result optimization with minimal impact on overall 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
This configuration allows for optimal pressure maintenance on the pinch roller, improving fiber composite uniformity and thread quality, enabling more even and stronger spinning results, while being easy to retrofit and maintain.
Implementation Method 1
the clamping roller is loaded in its working position by means of a compression spring and the compression spring is arranged in the opening of the guide rail and/or the opening of the bridge
Data Source
Figure 1
Figure 2
AI summary
In a load carrier (1) for the upper rolls of a drafting unit of a spinning machine, the upper rolls form an inlet roll (9), an intermediate roll (10), and an outlet roll (11) of the drafting unit. The carrier has a guide rail (2) and at least one bridge (3; 4) rotatably mounted about a pivot axis (5) in the guide rail (2), to which at least one of the upper rolls of the drafting unit is attached. A drive unit (18) is arranged on the bridge, in which the outlet roll (11) of the drafting unit and a clamping roll (17) of a compaction unit are arranged and connected to each other by means of a drive mechanism. The guide rail (2) and/or the bridge (3; 4) have at least one opening (6; 8) in which the pivot axis (5; 7) is received. The outlet roll (11) is arranged on the bridge (3; 4), in particular by means of a load assembly (16).The clamping roller (17) is loaded in its working position by means of a compression spring (20), and the compression spring (20) is arranged in the opening of the (11) and/or bridge, preferably on the axis of rotation. The compression spring (20) has a receptacle for mounting in a guide rail (2) and a pressure surface (22) for loading a clamping roller (17) in its working position, as well as a stop surface (23) to bear against the guide rail (2) of the load carrier (1) in its working position.