EP3140441B1 - Vorrichtung mit einem streckwerk zum reinigen von walzenoberflächen einer streckwerksvorrichtung - Google Patents

Vorrichtung mit einem streckwerk zum reinigen von walzenoberflächen einer streckwerksvorrichtung Download PDF

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Publication number
EP3140441B1
EP3140441B1 EP15722583.0A EP15722583A EP3140441B1 EP 3140441 B1 EP3140441 B1 EP 3140441B1 EP 15722583 A EP15722583 A EP 15722583A EP 3140441 B1 EP3140441 B1 EP 3140441B1
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EP
European Patent Office
Prior art keywords
bottom wall
suction
stripping
opening
suction channel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP15722583.0A
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German (de)
English (en)
French (fr)
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EP3140441A1 (de
Inventor
Jindrich VONDRUSKA
Felix Keller
Lauro Peter
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Maschinenfabrik Rieter AG
Original Assignee
Maschinenfabrik Rieter AG
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Publication of EP3140441A1 publication Critical patent/EP3140441A1/de
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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
    • D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
    • D01H5/60—Arrangements maintaining drafting elements free of fibre accumulations
    • D01H5/62—Non-rotary cleaning pads or plates; Scrapers
    • D01H5/625—Non-rotary cleaning pads or plates; Scrapers in cooperation with suction or blowing means

Definitions

  • the invention relates to a device on a spinning preparation machine with a drafting system, with several pairs of rollers arranged one behind the other with upper and lower rollers, with at least two elongated stripping devices which, for removing dirt and other impurities, rest with their stripping edges on one of the top rollers and with a suction hood which is arranged above the wiping devices and connected to a vacuum source.
  • scraper devices are used in practice, the scraper edges of which rest on the circumferential surface of the rollers with a certain contact pressure.
  • flexible scrapers are used, which lie under a certain pitch roll and with a certain pre-tension on the circumference of the rollers.
  • the flexible scrapers are usually attached to a holder by means of which they are attached to the drafting system.
  • Such a device is e.g. B. from the EP 1 700 937 B1 , DE 11 30 336 , DE20 06 580 A1 and DE 12 66 190 known.
  • a suction hood is provided above the scraper device, which is connected to a vacuum source. So that there is no accumulation of the stripped components on the respective scraper, they are periodically lifted from the circumferential surface of the rolls to be stripped or shifted horizontally with respect to the roll axis via a correspondingly attached adjusting device.
  • Such devices are well known, such. B. from the EP 1 700 937 B1 and also from the DE 38 29 490 A1 can be found.
  • the invention thus sets itself the task of eliminating the disadvantages of known designs and proposing a device in which the material stripped from the roller surfaces by strippers can be safely removed from the stripping area even at high speeds.
  • each of the scraper devices is attached to its own suction channel, the scraper edge of the respective scraper device protruding beyond the suction channel assigned to it in the area of a first opening of the suction channel, and the suction channels being attached to a bottom wall provided with openings , wherein the respective suction channel is provided with a second opening opposite the first opening which faces one of the openings in the bottom wall, the suction hood protruding beyond the openings in the bottom wall and being attached to the side of the bottom wall opposite the suction channels.
  • each scraper device be attached to an individual suction channel, it is possible to adapt the respective suction channel to the scraper device used, or to design it so that a sufficient air flow is generated in this area to allow the scraped material to be quickly and safely followed by a subsequent one to transfer the suction hood connected to a vacuum source. This means that no undesirable accumulations of stripped material can arise in the stripping area.
  • Such a device claimed according to the invention can also be used for stripping lower rolls.
  • the stripping device In order to be able to adapt the stripping device to an adjustment of the drafting distances (distance between the clamping lines of successive roller pairs) in a drafting area (pre- or main drafting area) of the drafting system, it is proposed that at least one of the suction channels be attached to the bottom wall so that it can be displaced transversely to the longitudinal direction of the scraping devices . This makes it possible to align the stripping device to the new position of the top roller to be stripped off without having to adjust the bottom wall.
  • the width of the opening provided in the bottom wall is greater than the width of the second opening of the suction channel, which is opposite the respective opening of the bottom wall. This ensures that the second opening of the respective suction channel faces a passage opening of at least the same size in terms of area of the bottom wall even after the adjustment.
  • the respective displaceable suction channel is provided with cover elements in the area of its second opening, by means of which the area of the opening of the bottom wall of the suction channel is closed which protrudes beyond the area of the second opening of the displaceable suction channel.
  • the front and rear channel walls of the respective suction channel have a distance a between 2 and 10 mm from the stripping device, which, seen in the longitudinal direction of the stripping device, are at their ends on the suction channel are attached.
  • the stripping device is located at least partially inside the suction channel and, due to the negative pressure applied, air flows around both sides on both of its long sides and is thus kept completely clean.
  • the distance between the stripping device and the respective duct wall is to be designed in such a way that, on the one hand, there are no blockages due to an insufficiently selected free space and, on the other hand, the free space should not be too large so that a sufficient air speed is still ensured within the suction duct to remove the stripped To transfer material into the suction hood.
  • an embodiment is also proposed, wherein - seen transversely to the longitudinal direction of the stripping devices and in the conveying direction F - the stripping device is attached as an extension of the front duct wall and is at a distance of between 8 and 20 mm from the rear duct wall of the suction duct, which it faces at least partially.
  • the bottom wall is attached to a frame which is attached to a machine frame such that it can be pivoted about a pivot axis, wherein the pivot axis runs parallel to the longitudinal direction of the stripping devices and the bearings of the top rollers of the drafting system are attached to the frame.
  • the entire device with the stripping devices can thus be pivoted completely into an inoperative position in which the lower area of the drafting system with the lower rollers is accessible.
  • the bottom wall is movably attached to the frame transversely to the longitudinal direction of the scraper device and held in a working position by at least one spring element the spring element (s) are supported on the one hand on the frame and on the other hand on the base plate and can be displaced with an adjusting means attached between the frame and the base wall via which the base wall is periodically transverse to the longitudinal directions of the stripping devices.
  • a pneumatically actuatable bellows cylinder is preferably proposed as the adjusting means. This makes it possible to generate periodic oscillating movements at short intervals (e.g. 1 to 2 minutes) without having to move large masses of the adjusting device.
  • adjusting means for the periodic back and forth movement and the restoring means in the form of a spring element in a common device (e.g. cylinder combined with a spring element).
  • the suction hood is provided with circumferential sealing elements by means of which it rests on the bottom wall and is held by fastening means. This enables the suction hood to be fastened quickly and easily on the base wall with a reliable seal against the ambient air.
  • the removal of the suction hood is also very simple and ensures quick access for cleaning purposes in the area of the second opening of the respective suction channels.
  • the hood be made of transparent material.
  • Fig. 1 a schematic side view of a drafting system 1 is shown, which is equipped with successively arranged pairs of rollers 2, 3; 4, 5; and 6, 7, which are provided for processing a fiber material G in a pre-drafting zone W and a main drafting zone HV.
  • the fiber material G to be drawn is moved through the drawing device 1 in the conveying direction F.
  • the lower rollers 2, 4, 6 connected to drive means are generally designed as profiled steel rollers and are rotatably mounted in a machine frame MG.
  • the upper rollers 3, 5, 7 (also called pressure rollers) assigned to the lower rollers usually have a rubberized surface (circumferential surface) Z and are pressed against the correspondingly assigned lower roller 2, 4 or 6 during operation via a device (not shown) to form a terminal point K1, K2, K3.
  • the top rollers 3, 5, 7 are rotatably supported by axles A in bearings 26, 27, 28 Driven by friction from the respective lower rollers 2, 4, 6 interacting with them.
  • the bearings 26, 27, 28, which are arranged at the respective ends of the upper rollers, are fastened to a frame 24 which is attached to the machine frame MG so as to be pivotable about a pivot axis 22.
  • a frame 24 which is attached to the machine frame MG so as to be pivotable about a pivot axis 22.
  • the frame 24 is in a working position in which the upper rollers 3, 5, 7 rest on the lower rollers 2, 4, 6, the frame being locked in this position by a device not shown.
  • the frame 24 can be pivoted upward about the pivot axis 22 into an inoperative position.
  • the top rollers 3, 5, 7 are also pivoted, as a result of which free access to the bottom rollers 2, 4, 6 is made possible.
  • scraper devices 9 are provided above the top rollers 3, 5 and 7 for scraping off such deposits, which consist of a holder H and a scraper E with a scraper edge K.
  • the wipers are made of a flexible material (e.g. plastic, rubber, etc.) and can be glued to the holder or connected in some other way.
  • the respective stripping devices 9 are each attached within a suction channel 11, 12 or 13 and are schematically shown at both ends via FIG Fig. 2 Fastening means 20 shown attached to an outer wall of the respective suction channel and in the in Fig.1 and Fig.1 a shown working position held. In this position, the respective end of the scraper provided with the scraper edge K protrudes a certain length from a first opening O1 from the respective suction channel out and lies under a bias on the circumferential surface Z of the respective top roller.
  • the scraper devices 9 ( Fig.1a ) are - seen transversely to their longitudinal direction L - arranged approximately centrally within the respective suction channel 11, 12 or 13 and at a distance a of 2 to 10 mm from the front or rear channel wall W1 or W2.
  • an air flow flows around the stripping device 9 from both sides (indicated by arrows), which is generated by the application of a negative pressure via a negative pressure source U. This ensures that the stripped material does not settle on the surface of the stripping device 9.
  • the respective suction channel 11, 12, 13 is provided with a second opening O2, which is opposite an opening B1, B2 or B3 which are mounted in a bottom wall 8.
  • the bottom wall 8 as seen in the conveying direction F, is provided on both longitudinal sides with upwardly projecting bevels 8a.
  • the bevels 8a have elongated holes L1 and L2 at their respective front and rear ends, through which bolts 30 and 31 protrude, which are each fastened to the frame 24 at their two ends.
  • the bottom wall 8 is thus connected to the frame 24 via the bolts 30, 31.
  • Spacers can be provided on the bolts 30, 31 between the bevels 8a and the frame 24 in order to achieve a central position (as shown in FIG Fig. 2 ) to fix the bottom wall 8 within the frame parts of the frame 24 running laterally to the bottom wall.
  • Fig.1b Another exemplary embodiment is shown, the stripping devices 9 being fastened directly in the extension of the front side wall W1 of the respective suction channels 11, 12.
  • the holder H is fastened to the front side wall W1 by fastening means not shown in detail.
  • This fastening can be designed in such a way that the scraper can be infeed in the direction of the circumferential surface Z of the rollers 3, 5 if they have to be reground and their diameter is reduced in the process.
  • the stripping device 9 is at least partially opposite the rear side wall W2 of the respective suction channel 11 or 12 at a distance k of 8 to 20 mm.
  • the end of the scraper E protrudes with its scraper edge K by a certain amount from the respective suction channel 11 or 12 and rests on the circumference Z of the respective roller 3, 5.
  • the material stripped from the roller circumference Z moves through the flexibly designed scraper E and under the action of the rotary movement of the roller 3 or 5 marked with an arrow into the area behind the scraper (viewed in the conveying direction F) which it is sucked off in the direction of the cover AH by the suction air flow created in the suction channels 11, 12 (see arrow).
  • Figure 1c is schematically a further embodiment according to Fig.1a shown on the basis of the suction channel 11.
  • the stripping device 9 is attached eccentrically within the suction channel 11.
  • the distance a 'to the front side wall W1 is smaller than the distance a to the rear side wall W2. It would also be possible to reverse the relationships between the distances. This results in different channel cross-sections on both sides of the stripping device 9. The result is that the flow velocity in the area with the smaller distance a 'is greater than the flow velocity in the area with the greater distance a.
  • the fibers shown schematically, which are laid around the wiping edge K of the wiper E can loosen again.
  • Fig. 1 how out Fig. 1 can be seen, at least one spring element 36 is attached to a transverse web 33 attached between the folds 8a, which spring element 36 is attached with its free The end is supported on the bolt 30.
  • the spring element 36 is designed as a compression spring and has the effect that the bottom wall 8 is displaced in the direction of travel F until the elongated hole L1 in the FIG Fig. 1 The position shown on the bolt 30 comes to a stop. The bottom wall 8 is thus in the position shown in relation to the frame 24 ( Fig. 1 ) fixed.
  • a further transverse web 34 is provided between the bevels 8a.
  • At least one bellows cylinder 38 is articulated on this transverse web 34 and, as shown schematically in FIG Fig. 1 shown, is attached to a transverse web 40 of the frame 24.
  • the bellows cylinder 38 is acted upon by a pressure source P. If compressed air is applied to the bellows cylinder 38 via the pressure source P, a pressure force is applied to the frame 24 via the transverse web 34, which pushes it against the conveying direction F and against the spring force of the spring 36. During this shift, the frame 24 is guided onto the bolts 30, 31 via the elongated holes L1, L2.
  • the suction channels 11, 12, 13 are attached to the bottom wall 8, they are also moved along with the stripping devices 9 attached within the suction channels. As a result of this displacement movement, the respective wiping edge K moves away from the surfaces Z of the top rollers 3, 5, 7, whereby any deposits in the area of these wiping edges K can be loosened and sucked off. As soon as the bellows cylinder 38 is no longer acted upon by the pressure source P, the bottom wall 8 is returned to its starting position in the conveying direction F by the spring force of the spring 36. The periodic displacement of the stripping devices 9 can take place by a corresponding controlled application of the bellows cylinder 38 at predetermined time intervals.
  • cover elements A1, A2, A3 are attached to the suction channels 11, 12, 13 in the area of the respective second opening O2, which cover elements A1, A2, A3 lie directly or indirectly beneath the bottom wall 8, leaving the respective opening O2 free.
  • These cover elements have lateral folds A11, A21, A31, which lie directly or indirectly on the folds 8a of the bottom wall 8.
  • the lateral folds A11 and A21 are provided with elongated holes T, through each of which a screw R protrudes, over which the folds A11 and A21 with the Folds 8a of the bottom wall 8 are connected. Via the elongated holes T it is possible - after loosening the screws R - to move the cover elements A1 and A2 relative to the bottom wall 8. Changes in the clamping distances in the pre-draft W and main draft HV can thus be compensated for with the masses c and d.
  • the corresponding stripping devices 9 can be adjusted in their position. This ensures that the stripping devices are always in the correct stripping position in relation to the correspondingly assigned top roller.
  • the foremost pair of rollers 6, 7 (viewed in the conveying direction F) is fixed in place. Therefore, the front suction channel 13 is also fixedly attached to the bottom wall 8.
  • the cover element A3 attached to the suction channel 13 rests directly on the bottom wall 8, the opening O2 of the suction channel 13 and the opening B3 of the bottom wall 8 being directly opposite one another.
  • the cover element A3 has lateral bevels A31 which rest directly on the lateral bevels 8a of the bottom wall 8.
  • the folds A31 are fastened to the folds 8a by means of screws R.
  • the bevels 31 are provided with holes through which the screws R can protrude.
  • the cover element A2 lies directly on the bottom wall 8 ( Fig.1a ) and extends over the cover element A1, which rests on the cover element A2.
  • the cover element A2 is provided with a further opening B in the area in which the cover element A1 rests, the width of which is approximately the width h of Corresponds to opening B1.
  • the constituents that have entered the interior 43 of the suction hood AH are transferred to a schematically indicated collection reservoir S under the influence of a vacuum source U connected to the suction hood AH.
  • the vacuum source U is connected to a tubular connection part 10, which is located in an upper area of the suction hood AH.
  • the suction hood which rests on the base wall 8 via a circumferential seal D, protrudes beyond the openings B1 to B3 of the base wall 8 in the area of its support.
  • the suction hood AH is fastened to the base wall 8 by means of fastening means 44 (e.g. screws) shown schematically.
  • fastening means 44 e.g. screws
  • the suction hood AH is detachable and can be removed at any time, e.g. to carry out cleaning work or to eliminate malfunctions.
  • the suction hood can be made of transparent material, which simplifies the monitoring of the interior 43 of the suction hood.
  • the proposed device enables through the proposed attachment of adjustable suction channels provided with stripping devices an intensive suction of the stripped components as well as a simple adaptation of the device to different drafting distances in advance or main draft of the drafting system.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
EP15722583.0A 2014-05-06 2015-04-14 Vorrichtung mit einem streckwerk zum reinigen von walzenoberflächen einer streckwerksvorrichtung Active EP3140441B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH00673/14A CH709595A2 (de) 2014-05-06 2014-05-06 Vorrichtung zum Reinigen von Walzenoberflächen einer Streckwerksvorrichtung.
PCT/IB2015/000478 WO2015170154A1 (de) 2014-05-06 2015-04-14 Vorrichtung zum reinigen von walzenoberflächen einer streckwerksvorrichtung

Publications (2)

Publication Number Publication Date
EP3140441A1 EP3140441A1 (de) 2017-03-15
EP3140441B1 true EP3140441B1 (de) 2021-06-16

Family

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Application Number Title Priority Date Filing Date
EP15722583.0A Active EP3140441B1 (de) 2014-05-06 2015-04-14 Vorrichtung mit einem streckwerk zum reinigen von walzenoberflächen einer streckwerksvorrichtung

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US (1) US10344405B2 (zh)
EP (1) EP3140441B1 (zh)
JP (1) JP6762878B2 (zh)
CN (1) CN106574408B (zh)
CH (1) CH709595A2 (zh)
WO (1) WO2015170154A1 (zh)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108035066A (zh) * 2017-12-15 2018-05-15 新昌县开心纺织有限公司 一种人造毛皮编织机用罗拉装置
DE102018207163A1 (de) * 2018-05-08 2019-11-14 Dahmen Textilmaschinen Gmbh Spulenreinigungseinheit
CN109594156A (zh) * 2018-11-30 2019-04-09 湖北德永盛纺织有限公司 一种粗纱机
DE102019110731A1 (de) * 2019-04-25 2020-10-29 Saurer Intelligent Technology AG Saugkanalendteil, Herstellverfahren und Streckwerk umfassend ein solches Saugkanalendteil
CN110318127A (zh) * 2019-08-19 2019-10-11 青岛云龙纺织机械有限公司 一种并条机刮板式上清洁装置
CN113445167B (zh) * 2021-07-14 2023-09-29 浙江坤洲工贸有限公司 一种纺织生产用纺织机内部引导罗拉的毛絮自清理机构
CN115418757B (zh) * 2022-08-15 2024-01-05 陆川恒和纺织科技有限责任公司 一种可调节式纺织细纱机
CN115418735A (zh) * 2022-09-02 2022-12-02 安徽质恒新材料有限公司 一种复合纤维拉伸设备

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US3074121A (en) * 1956-01-09 1963-01-22 Pneumafil Corp Roll clearers
GB872939A (en) * 1958-12-09 1961-07-12 Ferdinand Reiterer Improvements in devices for cleaning rollers, more particularly for textile machines
DE1130336B (de) * 1958-12-09 1962-05-24 Ferdinand Reiterer Vorrichtung zum Reinigen der Walzen von Streckwerken an Spinnereimaschinen
US3101504A (en) * 1959-09-12 1963-08-27 Luwa Ag Cleaning device for yarn carrying rotary cylinders of textile machines
DE1266190B (de) * 1962-10-25 1968-04-11 Schubert & Salzer Maschinen Vorrichtung zum mechanisch- pneumatischen Reinigen von Ober- und Unterwalzen an Streckwerken von Spinnereimaschinen
US3251101A (en) * 1964-02-06 1966-05-17 Deering Milliken Res Corp Suction clearer
US3431717A (en) * 1966-09-12 1969-03-11 Bahnson Co Suction flute mounted wiper device for drafting rolls
DE2527714A1 (de) * 1975-06-21 1977-01-13 Jacobi E & Co Kg Vorrichtung zum erfassen eines luntenbruchs in streckwerken
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JPH02118765U (zh) * 1989-03-10 1990-09-25
DE102004052177B4 (de) * 2004-10-27 2013-10-31 Rieter Ingolstadt Gmbh Spinnereivorbereitungsmaschine sowie Gehäuse für ein Streckwerk einer Spinnereivorbereitungsmaschine
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Also Published As

Publication number Publication date
JP2017517642A (ja) 2017-06-29
CN106574408B (zh) 2019-11-12
EP3140441A1 (de) 2017-03-15
CH709595A2 (de) 2015-11-13
US10344405B2 (en) 2019-07-09
US20170073850A1 (en) 2017-03-16
JP6762878B2 (ja) 2020-09-30
WO2015170154A1 (de) 2015-11-12
CN106574408A (zh) 2017-04-19

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