EP0736617A1 - Transport pneumatique de mèche de fibres dans une calandre - Google Patents

Transport pneumatique de mèche de fibres dans une calandre Download PDF

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Publication number
EP0736617A1
EP0736617A1 EP95114975A EP95114975A EP0736617A1 EP 0736617 A1 EP0736617 A1 EP 0736617A1 EP 95114975 A EP95114975 A EP 95114975A EP 95114975 A EP95114975 A EP 95114975A EP 0736617 A1 EP0736617 A1 EP 0736617A1
Authority
EP
European Patent Office
Prior art keywords
sliver
calender
air
guide
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.)
Granted
Application number
EP95114975A
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German (de)
English (en)
Other versions
EP0736617B1 (fr
Inventor
Alfred Nauthe
Wolfgang Göhler
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.)
Rieter Ingolstadt Spinnereimaschinenbau AG
Original Assignee
Rieter Ingolstadt Spinnereimaschinenbau AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Rieter Ingolstadt Spinnereimaschinenbau AG filed Critical Rieter Ingolstadt Spinnereimaschinenbau AG
Priority to DE59601205T priority Critical patent/DE59601205D1/de
Priority to EP19960102887 priority patent/EP0736618B1/fr
Priority to US08/622,213 priority patent/US5680678A/en
Publication of EP0736617A1 publication Critical patent/EP0736617A1/fr
Application granted granted Critical
Publication of EP0736617B1 publication Critical patent/EP0736617B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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

Definitions

  • the technical field of the invention is textile machines. In this area, a section is particularly affected, which is followed by a calender device, which usually consists of two opposing calender disks with which the sliver is compacted.
  • a method is proposed which makes accelerated and at the same time simplified processing possible - the introduction of the stretched fiber sliver between the calender disks.
  • a pair of output rollers to convey nonwoven fabric into a nonwoven funnel is arranged at the exit of a drafting system of a draw frame (as an example of a sliver processing machine).
  • the nonwoven fabric is combined in the nonwoven funnel and transported through the funnel mouth to a sliver tube which has a considerable length.
  • the sliver is introduced into a sliver funnel, which deflects the conveying direction of the sliver by approximately 90 ° and introduces it between a pair of calender rolls. After passing through the pair of calenders, the sliver compacted there is conveyed on to the laying device of the draw frame.
  • Such an example is shown in the left half of FIG. 1, the sliver tube being designated 8 and the exit rollers of the draw frame being 70b and 70a.
  • a structure with a long sliver tube 8 is also described in EP 593 884 A1 .
  • Another example of a long sliver tube (also designated 8 there) is US 4,372,010 ; the pair of calender rolls is designated 9a, 9b there.
  • Another example of the customary use of the long sliver tube is shown in DE-A 26 23 400 . There, the sliver tube itself is curved at an angle of approximately 90 ° and guides the nonwoven without changing the angle between the calender disks designated 5, 6 there.
  • a collector pipe also shows the DD 290 697 ; there the fleece funnel and belt funnel are clearly spaced apart.
  • a ventilation opening (there 8) allows the air flowing in at the beginning of the collecting pipe (there 5) to escape completely in front of the narrowest point of the band funnel.
  • the faster and safer processing is achieved even if the long sliver tube of the prior art is omitted and fleece funnels and sliver funnels are arranged directly one behind the other, but are nested in such a way that they can be tilted against each other or that they can be together above the Calender disks can be pivoted (or swung out) about a swivel axis that is arranged a little above the clamping line in the area of the calender disks. Tilting allows the sliver run to be changed, which runs through the nozzle insert mentioned above and not through the nozzle insert, which is the so-called preparation position or preparation position.
  • the "tilting together” relates to a uniform belt and fleece funnel, which can be tilted together in relation to a guide section which remains in a fixed relationship with the calender disks in the processing position.
  • the “tilting against each other” refers to a tilting of the axis of the first nozzle (fleece funnel) with respect to the axis of the second nozzle (belt funnel).
  • the sliver is fed with air from at least two sides between the calender disks.
  • a calender feed nozzle is proposed, which is arranged at the location of the band funnels known in the prior art, but which has injector bores without first venting takes place (claim 12).
  • the calender feed nozzle moves as a sliver funnel close to the fleece funnel.
  • the fleece tape guide according to the invention is particularly short and compact, at the same time long distances and thus unpleasant dead times in terms of control technology can be avoided.
  • the fleece tape guide according to the invention is easy to handle and even allows the aforementioned two positions of the nested nozzles, one for normal operation and one for processing.
  • the compact non-woven tape guide can be adjusted particularly easily and is considerably more user-friendly in terms of its adjustment effort than the non-woven tape guides known in the prior art.
  • the method for automated insertion of the beginning of the sliver is very economical in its air balance.
  • the method is insensitive to fluctuations in air pressure and can work reliably in a large range of pressures of the compressed air, which becomes oblique, inclined in the direction of the fiber channel to a suction flow formed above.
  • a mechanical threading of a section of the sliver (claim 4) into the fleece funnel is completely eliminated.
  • the sliver only has to be reduced to a smaller width at the front end (to width F1) and the remaining narrower section has to be shortened to a predetermined length, which results from the weight of the sliver and the length of the fiber channel from the fleece funnel to the clamping gap ( on length H).
  • Switching on a short pulse of compressed air causes the narrowed section to be threaded into the fleece funnel and this section to be transported to the nip, where complete threading or complete insertion of the sliver between the calender disks is achieved with a short angular momentum.
  • the air pressure pulse can advantageously be coupled with a slightly offset angular momentum, so that the operator only needs to press a button to thread the fiber sliver.
  • a sliver cannot be presented, introduced and brought into the operating position easier, faster and more reliably.
  • the suction flow above the location of the introduction of the compressed air is reliably formed when the compressed air is introduced at the location of the sliver transport channel that has the smallest diameter (claim 10, 11).
  • this is the belt funnel, which is arranged close to the calender rolls.
  • a compressed air flow introduced here in the direction of the calender rolls brings about a reliable suction flow above the point of introduction up to the fleece funnel, since there are no air losses (claim 13).
  • the sliver is gripped at the front end by air flow, drawn along the entire fiber channel and presented directly to the calender disks.
  • the sliver is not "pushed” by compressed air and is vented far in front of the calender discs.
  • the overlay in FIG. 1 illustrates the difference from the prior art, which is shown schematically in FIG.
  • the sliver FV which has not yet been properly drawn during insertion is introduced into a long guide tube 8 via stretching rollers 68a, 68b, 69a, 69b and delivery rollers 70a, 70b, which ends in a ribbon funnel 9.
  • the sliver funnel directs the sliver FB by 90 ° into the nip of the calender with its calender discs 100a, 100b.
  • the calendered fiber sliver KF emerges vertically downwards from the calender and is stored in a depositing device.
  • This sliver guide is also shown in FIG. 2 with the same reference numerals.
  • An embodiment of the invention shortens the sliver path and eliminates the sliver tube 8, there is an additional deflection roller 71, which causes a deflection of about 60 ° of the nonwoven conveying direction FV and introduces the sliver into one of several functional elements - forming the nonwoven channel.
  • the first element is the fleece funnel 50 with a ramp surface 50b and a funnel section 50a arranged directly thereon, in which the broadly arriving fiber sliver is folded, folded over and introduced into a first channel section becomes.
  • the channel section is formed by an insert 40, which is inserted on the rear side of the funnel section 50a of the fleece funnel 50 and fastened with a screw. It can be adjusted.
  • the fleece funnel 50 (with inner insert) can be tilted such that the ramp surface can be pivoted into the sliver guide and the funnel section next to it.
  • an articulated surface is provided which, in the angular position shown in FIG. 1 , enables the guide channel to be sealed off from the subsequent band funnel 30.
  • the articulated surface of the front, cylindrical section of the inner insert 40 consists of two backward-narrowing, continuously curved surface sections 41a and 41b, which engage in a corresponding bearing surface 35 on the belt funnel 30.
  • Figure 4a and 4b show this joint surface in two views at the front end of the insert 40 for the fleece funnel 50. Swiveling the fleece funnel 50 in the direction ⁇ into the other angular position does not release the radially airtight seal between the fleece funnel and the band funnel; A radially airtight fleece guidance is achieved both in the swung-in and in the swung-out state.
  • the radial tightness of the joint surfaces 41a, 41b on the bearing surface 35 is adjustable.
  • the upper part - above the articular surface - can be changed in the axial direction, in particular also in the radial direction, in its position relative to the lower part.
  • the fixed holder 20, in which the band funnel 30 is inserted, forms the basis for the adjustment.
  • the fleece funnel 50 is designed in two parts - with an insert inserted into it counter to the fleece conveying direction - the aforementioned relative adjustment can be carried out on a handle 51.
  • the fiber sliver is conveyed into the guide channel up to the clamping gap 100c through the fleece nozzle 50, the inner insert 40 and the band funnel 30, for which purpose the fleece funnel 50 is swung out and this is done manually by injector holes 34a, 34b, 64a, 64b on the band funnel according to FIG. 3 narrowed and held in the funnel mouth 50a sliver part F1.
  • a short suction flow of the order of 500 msec is sufficient to convey the narrowed fiber sliver F1 to the clamping gap 100c with the least amount of compressed air, since the joint surface 35 and the bearing surfaces 41a, 41b of the inner insert 40 are radially airtight. Mechanical insertion aids are not required.
  • a short angular momentum of duration T 2 is applied to the calender disks. It can switch itself on after a predetermined suction time T 1 , can be superimposed on it or can be initiated separately manually.
  • the shape of the band funnel 30 can be seen more clearly in FIGS. 5a, 5b and 5c , where the direction and arrangement of the injector bores 34a, 34b in the band funnel are also shown enlarged. They open into a cylindrical channel 31 which forms the front end of the fleece channel. The cylindrical section 31 widens via a conical section 32 to the diameter of the fleece channel, which is predetermined by the inner insert 40. At the upper end of the cone, the bearing surfaces 35 are provided which correspond in their curvature to the joint surfaces 41a, 41b.
  • the inclined injector bores 34a, 34b can run at an angle of approximately 45 ° with respect to the axis 200b of the band funnel insert 30; they can be offset in parallel to give the inserted sliver a twist and additional strength, as can be seen in FIG. 5d .
  • a band funnel holder 60 according to FIGS. 6a, 6b, 6c has a central, approximately cylindrical opening 62, into which the band funnel insert 30 is inserted.
  • an annular channel 63 which can be fed with compressed air from two or more cylindrical bores 64a, 64b, extends inwardly in the cylindrical opening.
  • the compressed air introduced from the outside is introduced into the aforementioned inclined injector bores 34a, 34b when the band funnel insert 30 is inserted, in order to open into the cylindrical section 31 of the nonwoven channel, which lies close to the clamping gap 100c.
  • Figures 6a and 6b illustrate the cylindrical beak 61 of the band funnel holder 60. It has a length L and a diameter, shown in the cross section of Figure 6b as width b.
  • the beak 61 has two halves, since - as can be seen in FIG. 6c - it is slit on the side.
  • a segment of the rotating calender disks 100a, 100b each engages in the two slots mentioned; this can also be clearly seen in FIG. 1 in the right half.
  • the clamping gap 100c comes to rest, which according to FIGS. 7a and 7b can both be closed (clamping gap 100c) and by turning off the one calender disc 100b can be opened (open clamping gap 100d).
  • the beak halves 61a, 61b which are formed by the aforementioned slits in the cylindrical beak 61, guide the guide air, which previously previously through the injector bores 64a, 64b in the Ring channel 63 and from there via the injector holes 34a, 34b of the band funnel 30, which run obliquely to the axis 200b, into the fleece channel.
  • the beaks prevent the guide air from escaping in front of the calendering gap 100c, 100d, but rather is guided beyond the calendering gap to behind the clamping gap.
  • a first narrow channel section 65a on one side of the calender disks or a second narrow channel section 65b on the other side of the calender disks, which have an approximately semicircular cross-sectional shape, serves to guide this air.
  • the respective channel is very narrow compared to the thickness d or width b of the beak 61 or its inner wall, which is directly adjacent to the side surface of the calender disk.
  • the width b of the beak and the overlap d of the inside of the beak half are opposite Calender disc to a sealing effect, which is formed without contact by significant to considerable flow resistance to the side air channels 65a, 65b.
  • the open calender gap 100d is the air not only passed the calender gap, but also clearly passed through the calender gap.
  • the sliver is also immediately threaded through the calender nip and the calender disk 100b can then be delivered in order to have reached the operating position with the sliver threaded.
  • the open calender gap is the sealing surface (part of the cover d) against that Air resistance of the now enlarged passage channel, consisting of the channel segments 65a, 65b and the open calender gap 100d, is large enough to prevent radial escape of guide air.
  • 4 bar can be mentioned as an example of an air pressure to be used, which is matched to a duct diameter 31 of approximately 3.8 mm in the band funnel 30 and approximately 8 mm in the duct 45 of the insert 40 of the fleece funnel 50.
  • a An air pulse of approx. 500 msec is sufficient to safely insert the front part F1 of the sliver up to the clamping gap 100c.
  • the length H1 of the manually narrowed sliver is matched to the distance from the fleece funnel 50 to the clamping gap 100c and thus the length of the airtight fleece channel.
  • the mentioned inwardly facing annular channel 63 can also be formed on the insert 30 as an outwardly pointing channel, for example by a circumferential notch. Both channels 63, 33 can also be provided in order to form an annular channel together when the funnel 30 and holder 60 are plugged together.
  • the band funnel holder 60 has an intermediate truncated cone section between its upper cylindrical section 62 and its beak section 61. With it or with the cylindrical section, it can be inserted into a carrier 20 which is positioned just above the calender disks 100a, 100b in such a way that the beak section of the holder 60 engages over the calender disks and the clamping gap.
  • the fleece nozzle 50 is also pivotably held on the carrier 20 by means of bearing tabs 51 which create a distance. All parts of the nozzle system are interchangeable but still fixed in position.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
EP95114975A 1995-04-07 1995-09-22 Transport pneumatique de mèche de fibres dans une calandre Expired - Lifetime EP0736617B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE59601205T DE59601205D1 (de) 1995-04-07 1996-02-27 Führungseinrichtung zum Einführen eines Faserbandes in die Klemmlinie von Kalanderscheiben einer faserbandverarbeitenden Textilmaschine und ein Verfahren zum Einführen
EP19960102887 EP0736618B1 (fr) 1995-04-07 1996-02-27 Dispositif de guidage pour introduire un ruban de fibres dans la ligne de pincement des disques d'une calandre d'une machine de textile utilisant des rubans de fibres et un procédé d'introduction
US08/622,213 US5680678A (en) 1995-04-07 1996-03-27 Process and guide system for the introduction of a fiber sliver into the nip line of calender disks of a fiber processing textile machine

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE29506107U 1995-04-07
DE29506107 1995-04-07
DE29510871 1995-07-05
DE29510871U 1995-07-05

Publications (2)

Publication Number Publication Date
EP0736617A1 true EP0736617A1 (fr) 1996-10-09
EP0736617B1 EP0736617B1 (fr) 1999-12-22

Family

ID=26057786

Family Applications (1)

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EP95114975A Expired - Lifetime EP0736617B1 (fr) 1995-04-07 1995-09-22 Transport pneumatique de mèche de fibres dans une calandre

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Country Link
EP (1) EP0736617B1 (fr)
DE (1) DE59507482D1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0806502A2 (fr) * 1996-05-09 1997-11-12 Rieter Ingolstadt Spinnereimaschinenbau AG Entonnoir de ruban de fibres

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006012335B4 (de) * 2006-03-17 2015-07-09 Rieter Ingolstadt Gmbh Vliesführungsvorrichtung sowie Textilmaschine

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2623400A1 (de) 1975-09-09 1977-03-10 Elitex Zavody Textilniho Vorrichtung zur verdichtung und fuehrung von textilfasern
US4372010A (en) 1979-09-28 1983-02-08 Societe Alsacienne De Constructions Mecaniques De Mulhouse Apparatus for the automatic infeed of a textile fibre sheet into a coiler
FR2597119A1 (fr) * 1986-04-10 1987-10-16 Zinser Textilmaschinen Gmbh Conduit de guidage de ruban entre cylindres de sortie et cylindres de calandre dans une machine de preparation de filature
EP0325294A2 (fr) * 1988-01-21 1989-07-26 Zinser Textilmaschinen GmbH Conduit de guidage d'un ruban
DD290697A5 (de) 1989-12-22 1991-06-06 Hochschule F. Bauwesen Cottbus,De Vorrichtung zum bearbeiten und herstellen von horizontal- und vertikalfugen in vertikalen oder stark geneigten oberflaechen
EP0593884A1 (fr) 1992-10-22 1994-04-27 Rieter Ingolstadt Spinnereimaschinenbau AG Entonnoir d'un système d'étirage

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2623400A1 (de) 1975-09-09 1977-03-10 Elitex Zavody Textilniho Vorrichtung zur verdichtung und fuehrung von textilfasern
US4372010A (en) 1979-09-28 1983-02-08 Societe Alsacienne De Constructions Mecaniques De Mulhouse Apparatus for the automatic infeed of a textile fibre sheet into a coiler
FR2597119A1 (fr) * 1986-04-10 1987-10-16 Zinser Textilmaschinen Gmbh Conduit de guidage de ruban entre cylindres de sortie et cylindres de calandre dans une machine de preparation de filature
EP0325294A2 (fr) * 1988-01-21 1989-07-26 Zinser Textilmaschinen GmbH Conduit de guidage d'un ruban
DD290697A5 (de) 1989-12-22 1991-06-06 Hochschule F. Bauwesen Cottbus,De Vorrichtung zum bearbeiten und herstellen von horizontal- und vertikalfugen in vertikalen oder stark geneigten oberflaechen
EP0593884A1 (fr) 1992-10-22 1994-04-27 Rieter Ingolstadt Spinnereimaschinenbau AG Entonnoir d'un système d'étirage

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0806502A2 (fr) * 1996-05-09 1997-11-12 Rieter Ingolstadt Spinnereimaschinenbau AG Entonnoir de ruban de fibres
EP0806502A3 (fr) * 1996-05-09 1998-07-08 Rieter Ingolstadt Spinnereimaschinenbau AG Entonnoir de ruban de fibres
DE19618642B4 (de) * 1996-05-09 2007-07-19 Rieter Ingolstadt Spinnereimaschinenbau Ag Vliestrichter

Also Published As

Publication number Publication date
EP0736617B1 (fr) 1999-12-22
DE59507482D1 (de) 2000-01-27

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