An Electronic Drafting Device for Small Spinning Frame Used in Teaching Demonstration

Abstract

The invention provides an electronic drafting system of a small spinning frame for teaching demonstration. The electronic drafting system comprises a front roller, a middle roller, a back roller, a cradle, a trapezoid shaft, a left wallboard and a right wallboard, wherein the cradle is in pin connection with the trapezoid shaft; the trapezoid shaft is in screw connection with the left and right wallboards; middle parts of the left and right wallboards are respectively provided with three through holes; rolling bearings are embedded in the through holes; the front, middle and back rollers respectively penetrate through the rolling bearings embedded in the through holes, and are arranged between the left wallboard and the right wallboard in a manner that the rollers are parallel to each other in pairs; one end of the front roller, one end of the middle roller and one end of the back roller are respectively connected with an elastic coupling, and the other end of the front roller, the other end of the middle roller and the other end of the back roller are respectively provided with a crank; the other end of each elastic coupling is connected with a step motor. The electronic drafting system has the advantages of compact structure, small size, low manufacturing cost, portability, simple operation, high safety, clear working principle, ideal teaching demonstration effect and the like.

Description

technical field [0001] The invention belongs to the technical field of teaching instruments, in particular to an electronic drafting device of a small spinning frame used for teaching demonstration. Background technique [0002] The draft drive is the heart of the spinning frame. In the prior art, Chinese Patent Document No. 201110250499.8 discloses an electronic drafting system for spinning frame, the principle of which is to disconnect the mechanical connection between the main shaft and the drafting system, and remove the mechanical mechanism of the complicated drafting gear transmission system. The structure, the front, middle and rear rollers are directly driven by the servo motor, frequency conversion motor and reducer, and the operation and process adjustment of the rollers are controlled by PLC and electronic programs to coordinate with the whole machine. The disadvantage is that the whole machine is bulky , the structure is more complex and cannot be well applied t...

AI Technical Summary

Problems solved by technology

In the prior art, Chinese Patent Document No. 201110250499.8 discloses an electronic drafting system for spinning frame, the principle of which is to disconnect the mechanical connection between the main shaft and the drafting system, and remove the mechanical mechanism of the complicated drafting gear transmission system. The structure, the front, middle and rear rollers are directly driven by the servo motor, frequency conversion motor and reducer, and the operation and process adjustment of the rollers are controlled by PLC and electronic programs to coordinate with the whole machine. The disadvantage is that the whole machine is bulky , the structure is more complex and cannot be well applied to classroom teaching

Therefore, in view of the problems that the electronic drafting drive of the spinning frame is abstract in the classroom teaching, the students do not understand it deeply, the transmission mechanism of the on-site teaching is inconvenient to observe, and the cost of starting the teaching is high, a simple structure, small size, clear principle is designed, which can be used with students The electronic drafting device teaching aid for teaching interaction has important application value

Images