Draw Texturing Machine Pin Stop Control
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Solution Overview
Problem
In pin-type twisting units of draw texturing machines, continuous rotation after yarn breakage leads to wasteful power consumption, reduced component lifespan due to abrasion, and potential detachment of the pin, causing damage or loss.
Innovation Solution
A draw texturing machine equipped with a yarn breakage sensor and a control unit that automatically stops the motor of the pin-type twisting unit upon detecting yarn breakage, along with a tension sensor to manage yarn tension and a cutter to prevent low-quality packages, ensuring swift stoppage of the pin and avoiding unnecessary rotation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the pin keeps rotating after yarn breakage to maintain continuous operation, then productivity is maintained, but power consumption increases and component lifespan decreases
Solution Approach 1:
The patent implements an automated feedback control system where a sensor detects yarn breakage and triggers a control unit to stop the motor automatically. This closed-loop feedback mechanism eliminates the need for continuous manual monitoring while preventing wasteful power consumption after yarn breakage, resolving the contradiction between maintaining productivity and reducing energy loss.
Solution Approach 2:
The system performs self-monitoring and self-stopping through the sensor and control unit, eliminating dependence on operator intervention. The machine automatically detects yarn breakage and stops itself, enabling continuous operation without manual input while preventing unnecessary power consumption and component wear.
2Productivity
If the pin keeps rotating after yarn breakage, then continuous production is maintained, but abrasion increases reducing member lifespan
Solution Approach 1:
The automated feedback system detects yarn breakage through the sensor and immediately triggers the control unit to stop the motor, preventing continued rotation that causes abrasion. This real-time feedback mechanism protects stationary components from unnecessary wear while maintaining productivity during normal operation.
Solution Approach 2:
The system takes preliminary action by automatically stopping the motor as soon as yarn breakage is detected, preventing the harmful effect of continued rotation before it can cause significant abrasion or damage to members constituting the pin-type twisting unit.
3Device complexity
If the pin is retained only by magnets, then device complexity is reduced, but pin detachment risk increases
Solution Approach 1:
The patent applies preliminary anti-action by implementing an automated stop function that prevents the harmful condition (pin detachment) before it can occur. By stopping the motor immediately upon detecting yarn breakage, the system eliminates the rotational force that could cause the magnet-retained pin to detach, thereby maintaining reliability without adding mechanical retention mechanisms.
Solution Approach 2:
The feedback control system monitors yarn status and automatically stops the motor when breakage is detected, preventing the pin from detaching due to continued rotation. This feedback mechanism maintains pin retention reliability while keeping the device simple by using magnets alone without additional mechanical constraints.
4Loss of energy
If the motor stops immediately upon yarn breakage, then power consumption is reduced, but pin detachment may occur due to sudden deceleration
Solution Approach 1:
The patent applies beforehand cushioning by implementing a controlled deceleration process instead of immediate abrupt stopping. The motor is stopped in a controlled manner that gradually reduces rotational speed, cushioning the sudden deceleration forces that could cause the magnet-retained pin to detach, while still achieving timely power savings after yarn breakage.
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
Swiftly stops the pin's rotation upon yarn breakage, reduces power consumption, prevents low-quality packages, and minimizes pin detachment, thereby extending component life and reducing operator burden.
Implementation Method 1
a yarn breakage sensor configured to detect yarn breakage
Implementation Method 2
a tension sensor configured to detect tension of the yarn
Implementation Method 3
a cylindrical pin retained while being in contact with circumferential surfaces of rollers attached to two rotational shafts
Data Source
Figure 1
Figure 2
Figure 3
AI summary
Rotation of a pin is swiftly stopped at the time of yarn breakage in a draw texturing machine including a pin-type twisting unit. A yarn breakage sensor 26 configured to detect yarn breakage and a control unit 30 configured to control a motor 54 of a pin-type twisting unit 15 are provided. When yarn breakage is detected by the yarn breakage sensor 26, the control unit 30 stops the motor 54.