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Press finger for a pre-spinning machine

A roving frame and roving technology, applied in textiles and papermaking, etc., can solve the problems of reducing the risk of threading out, unsatisfactory effect, complicated manufacturing technology, etc., and achieve the effect of reliably preventing threading out

Active Publication Date: 2013-04-17
SAURER GERMANY GMBH & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The risk of piercing can be reduced by keeping the wings slanted, but the effect is still unsatisfactory
Moreover maintaining the precise curvature of the wings is complex in terms of manufacturing technology

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Press finger for a pre-spinning machine
  • Press finger for a pre-spinning machine
  • Press finger for a pre-spinning machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] figure 1 and figure 2 Show the principle structure and working mode of the roving frame. Cooked bar is conveyed by drafting device, and wherein, only shows front roller 1 among the accompanying drawings. The drafted roving 2 is introduced into roving flyers 3, passing through one of the flyers up to its lower end. Presser palm 8 is installed on the flyer. The roving 2 is wrapped around the presser arm 6 and passed through the opening 11 in the presser leaf 7 . The roving bobbins 4 are arranged on the dragon tendons 9 . Longjin 9 can move up and down. The roving 2 obtains the required twist through the rotation of the flyer 3 and the roving bobbin 4, and is wound on the bobbin 4 under the guidance of the presser palm 8. In order to distribute the roving 2 over the axial length of the bobbin 4, the bobbin 4 is then moved up and down by means of the ribs 9.

[0027] When the bobbin 4 has reached the desired diameter, the end rovings 5a, 5b with less twist are reali...

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PUM

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Abstract

The present invention relates to a pressure finger (B) for a roving frame comprising a Pressfingerarm (6) and a press-finger platform (7) and for guiding a sliver during the formation of a coil (4) is formed on a roving frame. The press-finger platform (7) has an opening (11, 11b, 11c) for carrying out a roving (2, 2b, 2c) and one in the orifice (11, 11b, 11c) opening out slot (12, 12b, 12c) for introducing a roving (2, 2b, 2c) in the opening (11, 11b, 11c) connected to the running direction (16, 16b, 16c) of the roving (2, 2b, 2c) at an angle (W) of less than 45 DEG forms;. According to the invention, the longitudinal dimension (Lb, Lc) of the opening (11, 11b, 11c) greater than the transverse extension (Qb, Qc) and the distance (Ab, Ac) of the mouth region (19b, 19c) of the slot (12, 12b, 12c) of the end of the longitudinal extension (Lb, Lc), which faces the Pressfingerarm (6), in the running direction (16, 16b, 16c) of the roving (2, 2b, 2c) is greater than half the transverse dimension (Qb / 2, Qc / 2).

Description

technical field [0001] The invention relates to a presser finger of a roving frame comprising a presser arm and a presser leaf and for guiding the movement of roving during bobbin formation on said roving frame. The presser leaf has an opening for passing the roving, the opening having a longitudinal extension in the direction of travel of the roving through the opening and a transverse extension transverse to the direction of travel of the roving. The presser leaf also has a slot merging into the opening for introducing roving into the opening, the slot forming an angle of less than 45° with the direction of travel of the roving. Background technique [0002] Roving frames (also called flyer roving frames) process the cooked sliver into rovings which are wound onto so-called roving bobbins. The roving bobbins can be further processed into yarn on the ring spinning machine. On the roving frame, the cooked sliver first passes through the drafting unit. The roving is then d...

Claims

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Application Information

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IPC IPC(8): D01H7/32
CPCD01H9/046D01H7/32
Inventor F·马切尼克卡尔-海因茨·麦克
Owner SAURER GERMANY GMBH & CO KG
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