Twisted Pair Cable Fabrication Device with Segmented Rotor
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Solution Overview
Problem
Existing twisted pair cable fabrication devices face difficulties in easily inserting and twisting electric wires due to narrow grooves or cylindrical rotors, leading to labor-intensive and troublesome processes.
Innovation Solution
An electric wires twisting device where electric wires are inserted parallel to a twisting rod and rotated together with a rotor, using a timing belt for uniform driving force and inclined guide surfaces to ensure smooth insertion and twisting, allowing for easy and efficient wire alignment and rotation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the electric wire insertion groove in the rotor is formed narrow to admit almost two electric wires, then the twisting of electric wires is ensured, but the insertion work becomes troublesome and labor-intensive
Solution Approach 1:
The rotor is divided into two functional parts: the outer rotor body with a wide insertion opening for easy wire placement, and the inner twisting rod that performs the actual twisting. This segmentation allows the insertion groove to be wide while maintaining twisting precision through the separate twisting rod mechanism.
Solution Approach 2:
The twisting rod acts as an intermediary element between the rotor rotation and the electric wires. It is inserted through the wide opening alongside the wires and performs the twisting function, decoupling the insertion function from the twisting function and enabling both wide opening and precise twisting.
2Device complexity
If the rotor is made cylindrical to simplify the structure, then the device complexity is reduced, but the wire insertion process becomes troublesome requiring pre-insertion through the rotor
Solution Approach 1:
The rotor is segmented into an outer cylindrical body and an inner twisting rod. The cylindrical body provides simple structure and wide opening for easy insertion, while the twisting rod provides the twisting function. This segmentation maintains structural simplicity while solving the insertion problem.
Solution Approach 2:
Instead of making the wires pass through the rotor to achieve twisting, the invention inverts the approach by inserting the twisting rod through the rotor alongside the wires. The wires are inserted first through the wide opening, then the twisting rod is inserted and performs the twisting, reversing the traditional sequence and mechanism.
3Reliability
If the timing belt contact range with the rotor gear portion is increased beyond the slit width, then the driving force continuity is improved, but the device complexity increases
Solution Approach 1:
The timing belt is arranged to wrap around the rotor in a curved path, increasing the contact area with the gear portion. This curved arrangement allows the belt to maintain continuous contact with the gear teeth even when the rotor rotates, ensuring continuous driving force without requiring complex additional mechanisms.
Solution Approach 2:
The timing belt is pre-positioned to contact the gear portion at multiple points along the rotor circumference. This preliminary arrangement ensures that as the rotor rotates, the belt continuously engages with the gear teeth, maintaining driving force continuity without interruption.
Data Source
Figure 1
Figure 2~3
Figure 4~5B
AI summary
An electric wires twisting device includes a rotor that has a slit portion provided in a part of the rotor in a circumferential direction of the rotor, a twisting rod provided on the inner circumferential surface so as to be projected therefrom and so as to face the slit portion, a rotary driving portion that rotates the rotor, and a setting portion that inserts a pair of electric wires parallel in a direction of the width of the slit portion into an inner side of the circumferential surface of the rotor so as to be individually disposed on both sides of the twisting rod. A diameter of an inner circumference of the rotor is greater than a width of the slit portion.