Combing Head Detaching Rollers With Constant Rotation
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Solution Overview
Problem
Existing combing machines face high energy consumption and mechanical stress due to the need for powerful motors and complex gearboxes to manage the reciprocating motion of tear-off rollers, leading to inefficient energy use and increased costs.
Innovation Solution
The combing machine employs two pairs of tear-off rollers that operate with a constant direction of rotation, where the first pair rotates at a higher speed initially to create an overlap, followed by the second pair at a lower speed to facilitate continuous soldering, eliminating the need for complex gearboxes and reducing energy consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If servo motors are used to drive tear-off rollers with reciprocating motion at high combing cycles, then combing productivity is improved, but energy consumption increases and mechanical stress on shafts increases
Solution Approach 1:
The patent applies periodic action by using cam mechanisms to convert continuous rotational motion into periodic reciprocating motion of the tear-off rollers. The cam profiles are designed to provide the necessary acceleration and deceleration phases during each combing cycle, enabling high-speed operation without requiring complex servo motor control while maintaining energy efficiency through optimized motion profiles.
Solution Approach 2:
The patent replaces the servo motor and electronic control system with a purely mechanical cam-based motion control system. This substitution eliminates the need for continuous electronic control, reducing energy consumption and mechanical stress on shafts while maintaining high combing cycle speeds through precisely engineered cam profiles that optimize the reciprocating motion.
2Productivity
If powerful motors are used to drive tear-off rollers with reciprocating motion, then combing productivity is improved, but device complexity and cost increase
Solution Approach 1:
The patent replaces complex servo motors and electronic control systems with a mechanically simple cam-based system. The cam mechanisms directly translate continuous rotation into the required reciprocating motion, eliminating the need for complex motor control electronics and reducing overall system complexity while maintaining high productivity.
Solution Approach 2:
The cam mechanisms are designed with specific periodic profiles that automatically provide the required acceleration and deceleration phases for high-speed combing cycles. This periodic action is built into the mechanical structure itself, eliminating the need for complex control systems while achieving the desired productivity levels.
3Manufacturing precision
If tear-off rollers perform reciprocating motion with constant acceleration and deceleration, then fiber strand tearing is improved, but energy losses increase
Solution Approach 1:
The cam mechanisms are designed with optimized periodic profiles that provide the necessary acceleration and deceleration phases for effective fiber strand tearing. The cam profiles are engineered to minimize energy losses by smooth transitions between motion phases, reducing power consumption while maintaining high-quality fiber strand separation.
Solution Approach 2:
The patent optimizes the motion parameters of the tear-off rollers by carefully designing cam profiles that adjust acceleration and deceleration rates. This parameter optimization ensures effective fiber strand tearing while minimizing energy losses through smooth motion transitions and reduced inertial forces.
Data Source
Figure 1
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Figure 5~7
AI summary
The invention relates to a combing machine and a method for combing fibres, comprising a combing machine having a plurality of combing heads (20), wherein at least one lap strip (4) is unwound from a lap roll (1) at each combing head (20) and is fed to a feed cylinder (7) and a nipper assembly (5), the noils are combed out and removed by suction from the lap strip (4) by means of a fixed and cylindrical comb (9, 8), and the fibre web created is formed by means of a trumpet (15) into a fibre strip, which is drawn with the other fibre strips from the other combing heads to form a single fibre strip. The invention is characterized in that a first pair of detaching rollers (10, 12) and a second pair of detaching rollers (11, 13) are arranged downstream of the nipper assembly (5), wherein the two detaching roller pairs (10, 12; 11, 13) are designed to be operated exclusively with a constant direction of rotation during a comb cycle, wherein the first pair of detaching rollers (10, 12) is operated at a higher speed than the second pair of detaching rollers (11, 13), at least at the beginning of a comb cycle.