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Leather collar under pin and sipnning frame using same

A technology of the apron and straight part, which is applied in the field of the lower pin of the apron in the drafting mechanism of the spinning frame, which can solve the problems of not being able to effectively control the sliver, weakening the strength of the main drafting zone, and insufficient control of the sliver.

Inactive Publication Date: 2004-03-03
汤永学
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, further research and experiments have shown that the lower pin of this shape cannot effectively control the drafted sliver fibers, and there is room for improvement
Its design flaws are: the length of the straight line (plane) part of the lower pin is longer, making the elastic force of the supporting apron weaker, weakening the strength of the friction force circle in the middle of the main drafting area, and the control force on the sliver is not enough Strong; the lifting force of the highest point of the lower pin curve is not enough, so that the drafting channel of the sliver curve formed by the apron is relatively gentle, and the sliver cannot be controlled strongly, which is not conducive to the high quality of the yarn

Method used

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  • Leather collar under pin and sipnning frame using same
  • Leather collar under pin and sipnning frame using same
  • Leather collar under pin and sipnning frame using same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Experimental model: A512V, DVX pneumatic pressure; spinning 40 counts of combed cotton yarn; the structural size of the lower pin using the apron is: the length of the straight part B1 is 6 mm; the length of the curved part connected with the straight part B1 is 18 mm, and the distance A1 from the highest point to the front edge of the straight part is 11 mm, and the distance C1 from the highest point to the tail end of the lower pin of the apron is 13 mm; the thickness I1 of the straight part is 2 mm, and the height between the curved part and the straight part The difference H1 is 2.5 mm. The experimental results are shown in Table 1:

[0015] indicators

(%)

dry

cv

detail

-50

detail

-40

detail

-30

rough place

+100

Thick place

+70

Thick place

+50

Thick place

+35

Neps

+280

Neps

+200

original sales

13.01

4

126.6

1337

0

2.4

29

295

...

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Abstract

A lower pin of apron for spinning machine features that it has a basic T-shaped cross-section, its top surface is composed of a straight line part and a curve part, and said straight line part and curve part has the size relation individually or relatively. Its advantages are simple structure, better control force for drafting yarn, and high quality of yarn.

Description

technical field [0001] The invention relates to spinning drafting technology, specifically the apron lower pin of the spinning frame drafting mechanism, and the international patent main classification number is intended to be Int.Cl 7 .DOIH5 / 88. Background technique [0002] At present, the drafting mechanism of the ring spinning machine in the spinning mill generally adopts long and short double aprons, spring swing pins, spring cradle pressurization or pneumatic cradle pressurization devices, mainly relying on drafting rollers, rubber rollers, aprons, elastic The upper pin and the curved surface stepped lower pin work together to control the fiber and achieve drafting. The intermediate additional friction circle formed by the mechanism composed of aprons, elastic upper pins and curved surface stepped lower pins plays a decisive role in controlling fiber movement and ensuring the quality of the drafted yarn, especially the apron, elastic upper pins and curved surface step...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01H1/02D01H5/88
Inventor 杨玉奇韩文杰段昭一王东明
Owner 汤永学
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