Gear Unit Motion Curve Control for Combing Machines
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Solution Overview
Problem
Existing gear units in combing machines struggle to easily influence the movement curve of the pilgrimage movement, which is essential for efficient fiber processing, and often require complex mechanical adjustments.
Innovation Solution
A gear unit with a set gear unit and a control engine that allows for the adjustment of the rotary movement of the tear-off cylinder gear, enabling the influence of the movement curve of the pilgrimage movement through electrical control, while maintaining the basic pilgrimage step unchanged.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a planetary gear is permanently driven with continuous rotary motion and an oscillating motion is superimposed via a sliding rod unit, then the pilgrim step movement is generated, but the motion curve cannot be easily influenced and requires complex mechanical adjustments
Solution Approach 1:
The patent replaces the conventional sliding rod unit with a rocker mechanism that oscillates about a fixed axis. This substitution eliminates the need for complex mechanical adjustments to influence the motion curve, as the oscillating motion is naturally generated by the rocker's rotational movement about its axis, simplifying the overall drive mechanism while maintaining the pilgrim step movement capability.
Solution Approach 2:
The patent changes the geometric parameters of the rocker mechanism, specifically the position of the oscillation axis and the dimensions of the rocker arms, to directly influence the motion curve of the pilgrim step movement. By adjusting these geometric parameters, the motion characteristics can be easily modified without requiring complex mechanical adjustments, thereby improving adaptability while reducing device complexity.
2Ease of operation
If multiple servomotors are used to control the pilgrimage movement, then precise control of phase and acceleration is achieved, but energy consumption and investment costs increase
Solution Approach 1:
The patent merges the control functions into a single permanent drive mechanism that simultaneously provides both the continuous rotary motion and the oscillating motion through the rocker mechanism. This consolidation eliminates the need for multiple servomotors, reducing energy consumption while maintaining precise control over the pilgrimage movement's phase and acceleration through the mechanical design of the rocker and its connection to the planetary gear.
3Use of energy by moving object
If an oscillating tongs shaft with coupling rocker is used, then energy efficiency is improved, but the motion curve influence is limited
Solution Approach 1:
The patent enhances the adaptability of the oscillating rocker mechanism by introducing adjustable geometric parameters, such as the position of the oscillation axis and the lengths of the rocker arms. These parameter changes allow the motion curve to be easily influenced while maintaining the energy efficiency benefits of the oscillating mechanism, as the same rocker structure can be configured for different motion characteristics without requiring additional energy input or complex control systems.
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 solution allows for efficient control of the pilgrimage movement's phase and acceleration, reducing energy consumption and investment costs compared to using multiple servomotors, while being retrofittable and compact.
Implementation Method 1
a coupling rocker which is connected to the tongs shaft in such a way that the coupling rocker can be rotated in an oscillating manner by the tongs shaft
Implementation Method 2
the oscillating movement can be introduced into the break-off cylinder gear by means of the coupling rocker, so that a pilgrim step movement can be executed
Implementation Method 3
a tongs shaft which can be set into an oscillating back-and-forth rotational movement by means of a crank rocker connected to the main drive wheel
Data Source
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AI summary
The invention relates to a gear unit (1) of a combing machine for spinning preparation, comprising: a main drive shaft (10) which can be driven by a drive motor (27) via a main drive wheel (11); a nipper shaft (12) which can be made to move in an oscillating back and forth rotational movement by a four-bar linkage (13) connected to the main drive wheel (11); a coupling linkage (14) which is connected to the nipper shaft (12) in such a way that the coupling linkage (14) can be moved in an oscillating rotating manner by the nipper shaft (12); a detaching cylinder gearing (16) which is designed for driving at least one detaching cylinder (17, 18), and wherein the detaching cylinder gearing (16) can be continuously driven off via the main drive shaft (10), and wherein the oscillating movement can be introduced into the detaching cylinder gearing (16) by means of the coupling linkage (14) and can be superimposed upon the continuous driving by means of the main drive shaft (10) in the detaching cylinder gearing (16), such that a pilgrim-step movement can be performed with an output shaft (19) of the detaching cylinder gearing (16). According to the invention, an control gear unit (20) a control motor (23) are provided, wherein the output shaft (19) of the detaching cylinder gearing (16) is operatively connected to the control gear unit (20) and wherein the control motor (23) is designed for introducing a rotational movement into the control gear unit (20), which rotational movement can be applied to the output shaft (19) of the detaching cylinder gearing (16) by means of the control gear unit (20).