EP3973093A1 - Suction tube for a condensing device and device for pneumatically condensing a drawn fibre composite - Google Patents
Suction tube for a condensing device and device for pneumatically condensing a drawn fibre compositeInfo
- Publication number
- EP3973093A1 EP3973093A1 EP20731431.1A EP20731431A EP3973093A1 EP 3973093 A1 EP3973093 A1 EP 3973093A1 EP 20731431 A EP20731431 A EP 20731431A EP 3973093 A1 EP3973093 A1 EP 3973093A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- suction
- suction pipe
- output
- roller
- suction tube
- 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.)
- Pending
Links
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
- D01H5/70—Constructional features of drafting elements
- D01H5/72—Fibre-condensing guides
Definitions
- the present invention relates to a suction pipe for a Verdichtungvorrich device in a drafting system of a spinning machine, with a jacket and an interior and with a suction slot, with a suction slot surrounding the guide surface for a sieve element and with an opening for a suction connection for suctioning the interior and the Suction slot, as well as a device for the pneumatic compression of a stretched Fa serverband.
- Suction pipes for compression devices on drafting systems for Spinnmaschi NEN are each arranged subsequently to the output rollers of such a drafting system.
- a variety of suction pipes for use in compression devices in spinning machines are known from the prior art.
- the suction pipes are at least partially wrapped around by a perforated strap or a woven screen strap.
- a corresponding device is described, for example, in DE 102 61 785 A1.
- the suction tube disclosed therein is partially wrapped by an air-permeable conveyor belt and has a suction slot on one side which faces a fiber sliver to be compressed.
- the suction tube is held between two juxtaposed spinning stations and has a suction slot for each spinning station.
- EP 1 134 309 A1 attempted to design a compression device in such a way that additional rollers for driving the air-permeable conveyor belt could be dispensed with. That became Suction tube replaced by a suction shoe, which is wrapped in addition to a guide roller by the air-permeable conveyor belt and has the suction slot necessary for the seal.
- suction pipes that can be pivoted can come into contact with the rollers of the drafting system. This leads to increased wear of the suction pipe or even of the Siebriem, which can then also grind on the roller of the drafting system.
- the object of the present invention is therefore to provide a suction pipe and a sealing device in which wear is minimized.
- a suction pipe for a compression device in egg nem drafting system of a spinning machine has a jacket and an interior such as a suction slot.
- the suction tube further comprises a guide surface surrounding the suction slot for a sieve element and an opening for a suction connection for suctioning the interior space and the suction slot of the suction tube.
- the invention provides that the suction tube has a sliding surface outside the guide surface for the sieve element.
- the sliding surface protrudes at least partially radially beyond an outer circumference of the jacket of the suction pipe so that the sliding surface contacts the roller of the drafting system instead of the suction pipe.
- the material of the suction pipe itself is thereby protected from wear.
- the sliding surface is the special one is selected with regard to the material pairing with the lower cylinder, wesent Lich better protected against wear than the intake manifold, which is usually made of aluminum.
- the suction tube at least partially has a cross section in the form of a polygon, a circle, an oval, a triangle, a crescent moon or a kidney.
- the suction pipe is thus able to optimally design the compression zone on the one hand and the guide for the sieve element on the other.
- the sieve element is guided in such a way that dust and lint that could get stuck in the belement are easily and preferably automatically detached from the sieve element.
- the suction tube is a two-chamber profile in which there is negative pressure in a first chamber and a fastening element can be arranged in a second chamber.
- the sliding surface is arranged on the cap and / or on a sliding piece on the suction pipe. It is particularly simple when the sliding surface is integrated into the cap.
- the cap can thus be designed so that it protrudes over the outer circumference of the jacket of the suction tube and thus when the suction tube is pivoted in the direction of a roller of the drafting system, this protruding area of the cap forms the Gleitflä surface.
- a sliding piece is arranged on the suction pipe, which forms the sliding surface.
- This slider can be connected to the suction pipe in an advantageous manner.
- the slider can either be connected to the suction pipe with a connecting device or glued to the suction pipe.
- the sliding surface is formed from a friction-resistant material, in particular from plastic, ceramic and / or a friction-resistant coating.
- the friction-resistant material is preferably selected from one of the materials which form a friction-resistant material partner to the roller of the drafting system with which it will come into contact.
- the cap is arranged in the interior and / or on theêtum catch of the jacket of the suction tube, in particular inserted.
- a plug connection between the cap and the jacket of the suction tube is sufficient.
- a safety device for example a clip, an adhesive or a screw.
- the suction slot and / or the guide surface for the sieve element is arranged on the cap.
- the arrangement of the suction slot and / or guide surface on the cap enables the suction slot and / or guide surface to be changed very quickly and easily.
- different caps can be available be provides, which have different shapes of the suction slot or the guide surface.
- the cap thus enables the integration of various suction slots or guide surfaces in order to be able to meet the special requirements of different fiber structures or yarns to be spun.
- suction slot has a width of 0.5 mm to 3.0 mm and a length of 2.0 mm to 5.0 mm.
- Suction slots with these dimensions are particularly suitable for a compaction spin NEN, which have a compaction device in the form of a small suction tube following a pair of output rollers of the drafting system.
- compaction spin NEN which have a compaction device in the form of a small suction tube following a pair of output rollers of the drafting system.
- other dimensions of the suction slot are possible with the present invention.
- the suction slot is arranged at an angle (a) of 70 ° to 110 ° to a longitudinal axis of the suction pipe. This inclined position of the suction slot in relation to the suction pipe or the perpendicular to the running direction of the fiber structure creates a particularly good seal of the fiber structure.
- two mirror-inverted suction tubes have a common longitudinal axis and are designed in one piece or connected to each other is particularly advantageous.
- the manufacture and attachment of the suction pipe and the connection for a vacuum line on the suction pipe are particularly simple here. If the two suction pipes are designed to be separate but connected to one another, it is particularly advantageous if the separation point is detachable so that, for example, the suction pipes can be separated from one another for cleaning.
- a suction pipe is at least partially wrapped by the sieve element.
- a clamping point is formed by the sieve element with the upper exit roller or the lower exit roller in the region of a guide surface of the sieve element.
- the suction tube is formed according to one or more of the features described above.
- the device has particular advantages if the Gleitflä surface protrudes radially so far over an outer circumference of the jacket of the suction tube that it has no contact with the top or bottom exit roller when the nip is formed.
- the sliding surface has a contact with the output upper roller or output lower roller when the output upper roller is lifted from the output lower roller.
- Figure 1 is a schematic representation of a spinning station of a ring spinning machine
- Figure 2 is a side view of a compression device
- FIG. 3 shows a side view of the compression device according to FIG. 2 with the pressure arm raised
- FIG. 4 shows a front view of two compression devices
- FIG. 5 shows a cross section through a suction pipe
- FIG. 6 shows a rear view of a suction pipe
- FIG. 7 shows a rear view of a further suction pipe
- FIG. 8 a front view of a suction pipe.
- FIG. 1 shows a schematic representation of a section of a spinning machine, in particular a ring spinning machine with a compression device 20.
- Individual components of the spinning machine are shown by way of example, namely a drafting system 2 and a spinning device 10.
- the drafting system 2 consists of three pairs of rollers, one input roller pair 3, a belt pair of rollers 4 and a pair of output rollers 5.
- the pair of output rollers 5 is formed by an output top roller 6 and an output cylinder 7.
- the two rollers of a roller pair are pressed against each other and form a nip at their point of contact
- the clamping point K1 is formed by the pair of output rollers 5 between the output top roller 6 and the output cylinder 7.
- a clamping point K2 is formed by a suction pipe 17 (FIG.
- the fiber structure 1 entering the drafting device 2 is clamped between the rollers of the roller pairs 3, 4 and 5 by the respective clamping points and is stretched due to the different speeds of the roller pairs 3, 4 and 5.
- the fiber structure 1 is transported through the drawing system 2 at the same time.
- the drawn fiber structure 8 arrives at the compression device 20, in which it is compressed.
- the spinning device 10 consists essentially of a ring rail 14, which carries the spinning ring 12, and a spin delbank 15 on which the bobbin 13 is attached.
- the fiber structure 8 GE reached over a runner 11 to the coil 13.
- the coil 13 is set in rotation.
- the Fa serverband 8 is given a rotation and thereby a yarn is formed which is wound onto the bobbin 13 by moving the ring rail 14 up and down.
- the top rollers can be raised from the bottom rollers.
- a loading arm 19, to which the top rollers are attached in a known manner is moved around a pivot point D in the direction of the arrow P.
- Figure 2 shows a side view of a compression device 20 in the area of the output roller pair 5.
- the upper roller 6 is pressed onto the output cylinder 7 and forms a clamping point K1 with this.
- the top roller 6 is fastened to the loading arm 19 in a known manner by means of a loading unit 33.
- the output top roller 6 is pressed against the output cylinder 7 with a loading spring 22 with the loading arm 19 closed.
- the attachment of the loading unit 33 to the loading arm 19 takes place in this embodiment by means of an indicated fastening element, for example a clamping screw that can be moved and fixed in an elongated hole.
- the fastening element allows, in particular, a displacement of the loading unit 33 within the elongated hole.
- the clamping point K2 is created between the upper roller 6 and a suction pipe 17, the suction pipe 17 being pressed against the upper roller 6 from the output by means of a spring 21.
- the suction pipe 17 has the suction slot 32 through which air is sucked in.
- the fiber bandage 8 is bundled and compressed. So that the fibers of the fiber composite 8 are not sucked into the suction slot 32, the suction slot 32 is surrounded by a sieve element 18.
- the sieve element 18 wraps around the suction pipe 17. It can be tensioned by means of a clamping device or, as shown here, simply placed loosely around the suction pipe 17.
- the suction pipe 17 is connected to a suction pipe 24. From the suction pipe 24, air is sucked out of the suction pipe 17.
- Suction pipe 17 and from suction pipe 24 can be made in one piece or the suction pipe 24 can be flexible, for example as a flexible hose.
- suction pipe 17 and suction pipe 24 are attached to holder 23 of suction pipe 17.
- the suction pipe 17 and suction pipe 24 are preferably detachably connected to each other so that any contamination can be easily cleaned by removing the suction pipe 17 from the suction pipe 24 and thus the interiors of the suction pipe 17 and the suction pipe 24 are easily accessible for cleaning.
- the suction tube 17 is inserted into an opening of the suction tube 24 or of the suction tube holder 23 and fixed there if appropriate, for example by means of a screw.
- the suction pipe 24 is connected elastically or with an elastic connection to a second part of a suction pipe 30, preferably separable.
- the second part of the suction pipe 30 is in particular attached to a machine frame, for example to a longitudinal component of the machine frame, and leads to a suction source of the drafting system 2 or the spinning machine.
- the second part of the suction pipe 30 is arranged in a stationary manner and does not have to be designed to be movable.
- the connection for example with an elastic sleeve 46, or the suction tube 24, 30 must be elastically performed.
- the suction tube holder 23 and thus the suction tube 17 is arranged on the Maschi nengestell.
- the suction tube holder 23 is connected to a spring 21 to the.
- the spring 21 here a leg spring, presses the suction tube 17 with a predetermined force elastically against the top output roller 6.
- the suction tube 17 thus rotates about a pivot point DS on the axis 25, which forms the attachment of the spring 21 at the same time.
- the spring 21 is part of the swivel ble Flalters for the suction pipe 17, with which the suction pipe 17 is rotatably mounted on the machine frame and pressed elastically to the top roller 6 who can.
- the upper rollers 6 of two drawing units 2 pa rallel are attached to a loading arm 19.
- the top rollers 6 are arranged in the manner of twin rollers by means of an axis on the loading unit 33 of the loading arm 19.
- Each of the top rollers 6 is laterally on the loading arm 19 also.
- two compression devices 20 of adjacent drafting systems 2 are preferably assigned to a loading arm 19.
- the two compression devices 20 can be designed as one structural unit. However, they can also be designed individually and thus individually assigned to each drafting device 2.
- a first part of a La storage for rotating and tilting the suction pipe 17 is arranged on the holder 23 of the compression device 20, a first part of a La storage for rotating and tilting the suction pipe 17 is arranged.
- This first part is an axle 25 in this exemplary embodiment.
- the axle 25 also serves to accommodate the leg spring 21.
- Each end of the axis 25 is inserted into an elongated hole 26 of a base body 27.
- the elongated hole 26 forms a second part of the mounting of the holder 23, which cooperates with the first part of the position tion.
- the suction pipe 17 is designed to be movable relative to the base body 27 by means of the mounting. Due to the arrangement of the leg spring 21 between the suction pipe 17 or holder 23 of the suction pipe 17 and the base body 27, a movement of the suction pipe 17 relative to the base body by 27 is possible.
- the leg spring 21 is supported with a first Leg on a support element 28 of the holder 23 and with a second leg on a further support element 29 of the base body 27.
- the holder 23 and thus the suction pipe 17 are moved upwards according to the present illustration. The movement continues until either the suction pipe 17 strikes the second clamping point K2 of the upper output roller 6 or a sliding surface 31 of the suction pipe 17 comes into effect by striking the lower cylinder 7.
- the sliding surface 31 is preferably formed from a friction-resistant material, in particular from plastic, ceramic and / or a friction-resistant coating.
- the bearing of the Hal age 23 forms a rotatable and / or tiltable floating bearing.
- the suction tube 17 can be applied evenly to the top exit roll 6 both by rotating and tilting to the longitudinal direction of the suction tube 17, which runs essentially parallel to the axis of the top exit roller 6.
- the suction pipe 17 and the sieve element 18 are pressed evenly against the upper exit roller 6, so that the fiber structure 8 can be compressed evenly and of high quality.
- the base body 27 is screwed in this embodiment to a longitudinal part 42 of the spinning machine.
- the longitudinal component 42 extends, for example, between two punches of the spinning machine and in this way accommodates several, for example eight, compression devices for eight spinning devices 10 arranged next to one another.
- the longitudinal component 42 can be a shaped, for example extruded or rolled profiled sheet.
- the longitudinal component 42 can, however, also be formed by one or more rods, for example arranged between punches.
- FIG. 3 shows a side view of the compression device 20 according to FIG. 2 with the loading arm 19 raised. In this illustration, the kidney-shaped cross section of the suction pipe 17 can be clearly seen.
- the spring 21 causes the base body 27 and the holder 23 to rotate further apart.
- the sliding surface 31 is provided on the suction pipe 17.
- the sliding surface 31 protrudes beyond the outer jacket of the suction tube 17.
- the sliding surface 31, which serves as a stop for the suction tube 17, limits the rotation of the flapper 23 relative to the base body 27, and this can prevent the suction tube 17 or the sieve element 18 from touching the output cylinder 7.
- FIG. 4 shows a front view of two compression devices 20 according to FIG. 2.
- two output top rollers 6 are arranged as twin rollers. Each of the top output rollers 6 is assigned to a suction pipe 17, a sieve element 18 and a suction slot 32.
- the loading arm 19 is raised so that the top output rollers 6 do not press on the suction pipe 17 in this illustration.
- the output cylinder 7 has a corrugation 34 in the area of each spinning station or compression device 20. For reasons of clarity, the base body 27 is not shown.
- the suction tube 17 Due to the raised exit top rollers 6 and the rotatably mounted suction tube 17, the suction tube 17 swivels onto the exit cylinder 7 and its corrugation 34.By the sliding surfaces 31 at the two ends of the suction tube 17, the suction tube 17 is supported via these sliding surfaces 31 on the exit cylinder 7. The suction pipe 17 is prevented from contacting the corrugation 34 of the output cylinder 7 by the sliding surfaces 31.
- the suction pipe 17, which is usually made of aluminum or plastic, is therefore not subject to any wear due to the otherwise occurring loops of the corrugation 34 on the suction pipe 17.
- the sliding surface 31 is part of a cap 35 which is arranged at each of the two ends of the suction tube 17.
- the cap 35 also closes the suction tube 17 and thus has the effect that the negative pressure applied to the suction tube 17 generates a suction effect at the suction slot 32.
- the compression of the fiber structure 8 can thus take place very effectively.
- Figure 5 shows a suction pipe 17 that is designed as a two-chamber profile.
- a first chamber which forms a flea space 36
- negative pressure can be present in order to supply the suction slot 32 with negative pressure.
- a fastening element 38 can be arranged with which the suction tube 17 can be fastened to a receptacle 39 of the flinder 23, for example.
- FIG. 6 shows the suction tube 17 with a suction slot 32 in which the cap 35 only closes off the flea space 36 of the suction tube 37.
- the cap 35 is arranged with a plug-in element 37 in the flea space 36 and fastened there.
- the plug-in element 37 does not engage in the flea space 36, but rather encompasses the suction tube 17 on the outer circumference and is fastened there.
- the suction slot 32 is arranged at an angle ⁇ between 70 ° and 110 ° to a longitudinal axis of the suction pipe.
- the length L of the suction slot 32 is preferably between 2 and 5 mm.
- the width B has proven to be particularly advantageous in a range between 0.5 and 3 mm.
- FIG 7 a further embodiment of the invention is shown.
- the suction tube 17 is completed at its end in a conventional manner.
- the sliding surface 31 is part of a sliding piece 41 which is attached to the suction pipe
- the attachment of the slider 41 can be done, for example, by a non-positive or positive connection with the suction pipe 17.
- a single suction pipe 17 is shown.
- This suction pipe 17 can either be part of a double-sided suction pipe, wherein it is connected to a mirror-inverted suction pipe, not shown here. It can also be made in one piece, as shown in the previous exemplary embodiments, for the two adjacent spinning stations. As a further alternative, it is possible that it is connected to a vacuum source independently of the suction pipe 17 of the adjacent spinning stations.
- the suction tube 17 has, in contrast to the previousticiansbeispie len on a cap 35 which not only closes the suction tube 17 at its end, but also a guide for the screen element
- the suction slot 32 is also arranged in the cap 35.
- not only one sliding surface 31 is present, but two sliding surfaces 31 are provided to enable the suction pipe 17 to support evenly.
- the two sliding surfaces 31 guide the screen element 18 laterally.
- the screen element 18 can slide on the outer circumference of the cap 35 and is also guided there.
- the cap 35 is inserted with a plug element 37 into the cavity 36 of the suction tube 17 and fastened therein.
- the fastening can take place positively or non-positively, by means of clamps, adhesive or, for example, by means of a screw connection.
- This embodiment has the advantage that the cap 35 can be exchanged quickly.
- different shapes of the suction slot 32 can be adapted to the individual requirements of special fiber structures 8 or special yarns that are to be spun, and the spinning position can be quickly adapted when the requirements change.
- the suction pipe 17 can also be rotatably arranged on the loading arm 19.
- the suction pipe 17 is pressed against the output lower roller 7 during the spinning operation.
- the sliding surface acts accordingly against the upper output roller 6 in order to prevent the suction pipe 17 or the belement 18 from pressing against the upper output roller 6.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Spinning Or Twisting Of Yarns (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102019115219.4A DE102019115219A1 (en) | 2019-06-05 | 2019-06-05 | Suction tube for a compression device and device for the pneumatic compression of a drawn fiber structure |
PCT/EP2020/065478 WO2020245268A1 (en) | 2019-06-05 | 2020-06-04 | Suction tube for a condensing device and device for pneumatically condensing a drawn fibre composite |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3973093A1 true EP3973093A1 (en) | 2022-03-30 |
Family
ID=71069825
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20731431.1A Pending EP3973093A1 (en) | 2019-06-05 | 2020-06-04 | Suction tube for a condensing device and device for pneumatically condensing a drawn fibre composite |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP3973093A1 (en) |
CN (1) | CN113994036B (en) |
DE (1) | DE102019115219A1 (en) |
WO (1) | WO2020245268A1 (en) |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19722772A1 (en) * | 1997-06-02 | 1998-12-03 | Csm Gmbh | Ring spinner drawing unit |
JP2001279539A (en) * | 2000-03-08 | 2001-10-10 | Zinser Textilmas Gmbh | Draft system in fine spinning frame |
DE10053698A1 (en) * | 2000-10-23 | 2002-05-02 | Stahlecker Fritz | Device on a spinning machine for compacting a fiber structure |
DE10261785A1 (en) * | 2002-12-23 | 2004-07-01 | Wilhelm Stahlecker Gmbh | Pressure application mechanism acting on fibrous band in spinning machine, includes sliding surface spring-loaded against lower feed roller |
JP4419703B2 (en) * | 2004-06-22 | 2010-02-24 | 株式会社豊田自動織機 | Fiber bundle concentrator in spinning machine |
JP4844336B2 (en) * | 2006-10-11 | 2011-12-28 | 株式会社豊田自動織機 | Fiber bundle concentrator in spinning machine |
CN201228299Y (en) * | 2008-07-14 | 2009-04-29 | 张�育 | Integrated composite spinning gathering apparatus |
CH704137A1 (en) * | 2010-11-26 | 2012-05-31 | Rieter Ag Maschf | Device for compacting a fiber structure on a spinning machine and spinning machine. |
DE102012110899A1 (en) * | 2012-11-13 | 2014-05-15 | Wilhelm Stahlecker Gmbh | Insert for pneumatic compression device for compression spinning on spinning machine, has lateral guide surfaces for lateral guidance of conveyor belt in region of clamping point, particularly in lateral extension of clamping line |
DE102017130224A1 (en) * | 2017-12-15 | 2019-06-19 | Maschinenfabrik Rieter Ag | Drafting and compacting device for a spinning machine |
CH714448A1 (en) * | 2017-12-15 | 2019-06-28 | Rieter Ag Maschf | Device and drafting system for compacting a fiber structure. |
-
2019
- 2019-06-05 DE DE102019115219.4A patent/DE102019115219A1/en active Pending
-
2020
- 2020-06-04 WO PCT/EP2020/065478 patent/WO2020245268A1/en unknown
- 2020-06-04 CN CN202080038846.8A patent/CN113994036B/en active Active
- 2020-06-04 EP EP20731431.1A patent/EP3973093A1/en active Pending
Also Published As
Publication number | Publication date |
---|---|
WO2020245268A1 (en) | 2020-12-10 |
CN113994036A (en) | 2022-01-28 |
DE102019115219A1 (en) | 2020-12-10 |
CN113994036B (en) | 2023-06-16 |
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