Pot Spinning Machine Lid Segmentation for Yarn Rewinding
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Solution Overview
Problem
Existing pot spinning machines face challenges in successfully rewinding yarn onto a bobbin due to the difficulty in maintaining rotational speed and preventing yarn from being dragged out of the pot during the yarn cutting process, leading to failures in yarn rewinding.
Innovation Solution
A pot spinning machine design that includes a fixed cover with a lid that closes the opening, a projecting portion to guide the yarn inside the pot, and a controlled system to manage yarn cutting and rewinding, ensuring the yarn is adhered to the pot's inside wall without being discharged, thus preventing rewinding failures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the inner lid is removed from the pot to insert the bobbin, then the bobbin can be inserted for yarn rewinding, but the rotational speed of the pot must be stopped or decreased excessively which causes the centrifugal force to disappear and the cake to loosen
Solution Approach 1:
The lid is divided into two parts: an inner lid that rotates with the pot and an outer lid that remains stationary. This segmentation allows the inner lid to be removed for bobbin insertion while the outer lid remains in place to maintain the closed state of the pot, preserving centrifugal force and cake stability during the operation.
2Ease of operation
If the yarn cutting is performed with the opening of the pot opened, then the bobbin insertion is facilitated, but the end portion of the yarn is discharged from the pot which causes yarn rewinding failure
Solution Approach 1:
The lid structure is segmented into inner and outer lids. During yarn cutting and bobbin insertion, only the inner lid is removed while the outer lid remains closed, maintaining the enclosed environment that prevents yarn discharge while still allowing access for bobbin insertion.
Solution Approach 2:
The outer lid acts as an intermediary structure that remains in place during inner lid removal. It serves as a mediator that maintains the closed pot environment (preventing yarn discharge) while allowing the inner lid to be removed for bobbin insertion operations.
3Stability of the object's composition
If the inner lid is kept attached to the rotating pot, then the cake stability is maintained through centrifugal force, but the bobbin cannot be inserted for yarn rewinding
Solution Approach 1:
The lid is segmented into an inner lid attached to the rotating pot and an outer lid that remains stationary. This allows selective removal of the inner lid for bobbin insertion while the outer lid remains attached to maintain the closed environment and centrifugal force for cake stability.
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
The design significantly increases the success rate of yarn rewinding onto the bobbin by stabilizing the yarn cutting process and preventing yarn from being discharged, allowing for efficient cake formation and rewinding without the need to remove the inner lid from a rotating pot.
Implementation Method 1
winds the introduced yarn onto an inside wall of the pot by centrifugal force involved in rotation of the pot
Data Source
Figure 1
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Figure 5~6
AI summary
A pot spinning machine (1) includes a pot (16), a yarn introduction pipe (14), a fixed cover (18), and a lid (50). The pot (16) has an opening (26) that opens downward. The yarn introduction pipe (14) introduces a yarn (25) into the pot (16) and has a yarn outlet (14b) from which the yarn (25) is discharged into the pot (16) at a bottom end of the yarn introduction pipe (14). The fixed cover (18) surrounds the pot (16) and has an opening (28) that opens downward. The lid (50) opens and closes the opening (28) of the fixed cover (18). The lid (50) has a projecting portion (52) that is inserted into the pot (16) through the opening (26) of the pot (16) when the opening (28) of the fixed cover (18) is closed by the lid (50). The projecting portion (52) guides the yarn (25) discharged from the yarn outlet (14b) of the yarn introduction pipe (14) at yarn cutting to an inside wall (29) of the pot (16).