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Drive of twin upper rolls in drawing frames

A drafting device and driving device technology, applied in drafting equipment, continuous winding spinning machines, textiles and papermaking, etc., can solve problems such as yarn breakage, difficulty in replacing lower aprons, drafting errors, etc.

Inactive Publication Date: 2009-08-12
SAURER GERMANY GMBH & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The usual construction of drafting devices has the disadvantage that the long draft bottom rollers can twist under torsional loads, which can lead to drafting errors or even yarn breaks when releasing the twist
Another disadvantage is that it is more difficult to replace the lower apron on the lower apron roller in the event of a broken or damaged drafting lower roller

Method used

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  • Drive of twin upper rolls in drawing frames
  • Drive of twin upper rolls in drawing frames
  • Drive of twin upper rolls in drawing frames

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] From figure 1 It can be seen that the middle bottom roller 1 comprises a plurality of short roller sections 2 in the form of double rollers, the shafts 3 of which are each mounted in their center in a pivot bearing 4, in particular a roller bearing. The rollers 5 of the roller pair are rigidly arranged on the shaft, fastened for example by press fit.

[0020] The middle bottom roller 1 is an apron roller, which is wound by the bottom apron 6 . From figure 2 The components of the cage 7 guiding the apron can be seen.

[0021] The top roller 8 likewise includes a known per se top roller pair 9 , however, the top roller pair 9 is correspondingly offset laterally by one position relative to the bottom roller pair 2 . The roller 10 of the upper roller pair 9 is also wound by the apron 11, and the apron 11 passes through the image 3 The deflection rail 12 visible in is held in tension.

[0022] The pair of rollers 9 is each driven by an electric motor 13 which is desig...

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PUM

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Abstract

In order to simplify the replacement of aprons on the lower rolls (1) of drawing frames on spinning machines, the lower rolls are formed from twin rolls (2) in a similar manner to the upper rolls (8), the floating ends of said twin rolls enabling lower aprons (6) to be easily removed and installed. Tthe drawing rolls of said apron roll pair (1 / 8) are driven by individual synchronous motors (13) on the axles (14) of the twin rolls (9) of the upper roll (8) or the axles (3) of the twin rolls (2) of the lower roll (1). In order to create space for the drive motor for an upper twin roll (9), the twin rolls (2) of the lower roll (1) and the twin rolls (9) of the upper roll (8) are staggered in relation to each other by respectively one working position.

Description

technical field [0001] The invention relates to a drafting device with a plurality of pairs of drafting rollers arranged in tandem, wherein at least the top and bottom rollers of the pair of rollers are wound by drafting aprons, and the top rollers comprise Upper roller is right. Background technique [0002] The usual construction of drafting devices has the disadvantage that the long draft bottom rollers can twist under torsional loads, which can lead to drafting errors or even yarn breaks when the twist is released. Another disadvantage is that it is more difficult to replace the lower apron on the lower apron roller in the event of a broken or damaged drafting lower roller. [0003] DE 33 19 559 A1 and DE 38 25 068 A1 disclose a drafting arrangement in which the bottom rollers comprise a plurality of individual pairs of bottom rollers driven by drive shafts which are continuous along the length of the drafting arrangement. pair of gears for the drive. The pair of bott...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01H5/26D01H1/22
CPCD01H5/26D01H1/22D01H5/82
Inventor 海因策·W·坎普
Owner SAURER GERMANY GMBH & CO KG