Oscillating Linear Drive Thread Laying Device
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Solution Overview
Problem
Existing thread laying devices are limited in their ability to achieve precise and adjustable oscillating movements of the guide rod, particularly in accommodating variable laying widths, due to their reliance on mechanical coupling gears and torque-driven systems, which require high braking and drive energy and lack precise angle detection and control.
Innovation Solution
A device featuring an oscillating linear drive connected to the guide rod via a coupling member, such as a push rod with swivel joints, allowing for precise pivoting and adjustable laying widths through a pneumatic, hydraulic, or electric actuator, enabling the conversion of linear movement into pivoting motion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a mechanical coupling gear with multi-link gear and grooved disc is used to drive the guide rod, then the guide rod can be driven in an oscillating manner, but the laying width cannot be varied and the system is unsuitable for variable laying width guidance
Solution Approach 1:
The patent replaces the complex mechanical coupling gear system (multi-link gear, grooved disc) with a direct drive system where the drive end of the guide rod is held directly on the driven shaft. This substitution eliminates the intermediate mechanical transmission components, enabling variable laying width control through direct angular position control of the drive shaft while reducing mechanical complexity.
Solution Approach 2:
The invention transitions from a fixed mechanical gear system with predetermined laying width to a dynamic system where the laying width can be varied by controlling the angular position of the drive shaft. The guide rod's oscillation amplitude is dynamically adjustable through the drive shaft's rotation angle, allowing adaptability to different laying width requirements.
2Adaptability or versatility
If the guide rod is held by its drive end on a driven shaft to enable variable laying width, then variable laying width guidance is achieved, but high braking and drive energies are required due to inertial forces at reversal points
Solution Approach 1:
The patent introduces a counterweight element that balances the inertial forces of the guide rod during oscillation. The counterweight is positioned to create opposing inertial forces that cancel out the guide rod's inertial effects on the drive shaft, significantly reducing the braking and drive energy requirements at reversal points while maintaining variable laying width capability.
Solution Approach 2:
The invention optimizes the system parameters by adjusting the mass distribution and moment of inertia of the drive system. By carefully selecting the counterweight mass and position, the system achieves neutral or reduced inertial loading on the drive shaft, allowing variable laying width control with minimal energy consumption during acceleration and deceleration phases.
3Adaptability or versatility
If a torque-driven system is used to generate kinetic energy of the guide rod, then the guide rod can be driven, but precise angle detection and angle control are necessary to guide thread with variable laying width
Solution Approach 1:
The patent incorporates angle detection sensors (such as encoders or resolvers) on the drive shaft to provide real-time feedback on the angular position. This feedback is fed to a control system that adjusts the drive shaft's rotation angle to achieve the desired laying width, enabling precise control of the guide rod's oscillation amplitude and ensuring accurate variable laying width guidance.
Solution Approach 2:
The invention replaces manual or mechanical angle setting mechanisms with electronic angle detection and control systems. This substitution enables precise measurement of the drive shaft's angular position and automated control of the oscillation parameters, achieving accurate variable laying width guidance without complex mechanical angle setting devices.
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 precise and adjustable thread laying with reduced energy consumption and improved angle control, allowing for variable coil widths and shapes, including lifting and asymmetrical coils, with the laying width determined by the stroke of the linear drive and geometry of the guide rod.
Implementation Method 1
a coupling member (7) is provided between the linear drive (6) and the guide rod (1)
Implementation Method 2
The actuator (6.1) is formed by a pneumatic, hydraulic or electric actuator
Data Source
Figure 1
Figure 2
AI summary
The invention relates to a device for laying a thread, comprising a pivotal guide bar (1). The guide bar (1) has a guide end (2) with a thread guide (3) and a drive end (5), said guide bar (1) being rotatably mounted on a stationary pivot axis (4). The drive end (5) of the guide bar is coupled to a drive (9) in order to drive the guide bar (1). The aim of the invention is to lay a thread in a defined and modifiable manner. According to the invention, this is achieved in that the drive (9) is designed as an oscillating linear drive (6) which is connected to the drive end (5) of the guide bar (1) by means of a coupling element (7).