EP0750060B1 - Vorrichtung zur Bestimmung von Unregelmässigkeiten der Masse eines Faserbandes - Google Patents
Vorrichtung zur Bestimmung von Unregelmässigkeiten der Masse eines Faserbandes Download PDFInfo
- Publication number
- EP0750060B1 EP0750060B1 EP96109122A EP96109122A EP0750060B1 EP 0750060 B1 EP0750060 B1 EP 0750060B1 EP 96109122 A EP96109122 A EP 96109122A EP 96109122 A EP96109122 A EP 96109122A EP 0750060 B1 EP0750060 B1 EP 0750060B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- measuring chamber
- sliver
- prechamber
- pressure
- nozzle
- 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.)
- Expired - Lifetime
Links
- 239000000835 fiber Substances 0.000 title 1
- 230000006978 adaptation Effects 0.000 claims 1
- 238000007599 discharging Methods 0.000 claims 1
- 230000035484 reaction time Effects 0.000 claims 1
- 238000005259 measurement Methods 0.000 abstract description 3
- 238000007789 sealing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Images
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
- D01G23/00—Feeding fibres to machines; Conveying fibres between machines
- D01G23/06—Arrangements in which a machine or apparatus is regulated in response to changes in the volume or weight of fibres fed, e.g. piano motions
-
- 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
- D01H5/32—Regulating or varying draft
- D01H5/38—Regulating or varying draft in response to irregularities in material ; Measuring irregularities
Definitions
- the invention relates to a device for determining irregularities the mass of a sliver, with a measuring chamber, with an input and an output for the sliver, in a gas stream is introduced through an opening or nozzle, where a relationship between the pressure in the gas stream and the irregularities in the sliver.
- Such a device is known from DE-A-3036697, at which is a gas stream radial through a nozzle into a cylindrical one Measuring chamber is injected so that the gas flow into the sliver penetrates and spreads out there.
- the measuring chamber is the pressure in the line with which the gas is fed, recorded and the measured pressure fluctuations are used to indicate fluctuations in the diameter of the sliver understood.
- the line is also connected to a pressure transducer connected so that for the fluctuations in diameter an electrical signal is available.
- pressure fluctuations caused by Fluctuations in diameter of the sliver are independent immediately passed on to the measuring system.
- Such pressure fluctuations can for example, only from temporary flow conditions originate in the feed lines, but will but attributed to the fluctuations in diameter. Or, one in the area The sliver compressed in the nozzle can temporarily affect the gas flow oppose a higher resistance so that this too Circumstance is understood as a fluctuation in diameter.
- the invention as characterized in the claims is therefore the task of creating a device that the diameter fluctuations of the sliver more precisely, faster and, in particular, indicates as far as possible adjusted for interferences.
- the measuring chamber one assigned or connected upstream small chamber into which the Gas enters the measuring chamber before entering.
- the antechamber is against the measuring chamber and against the pressure or gas source delimited by a nozzle or a throttle. So that will as an indication of the mass of the sliver the pressure of the gas in the antechamber, i.e. before entering the sliver with a Pressure sensor measured. This creates the opportunity the gas from the antechamber also through several openings in the Introduce measuring chamber and at a single point, i.e. to measure an average pressure in the antechamber.
- the device according to the invention has various others Advantages on. For example, it also allows thicker sliver measure by this method because the arrangement of several Nozzles allow the gas flow to penetrate into the Dispense with the middle of the sliver. Furthermore, through this Solution of the pressure sensor very close to the prechamber or to the sliver to be ordered. With this solution it is also possible make the measuring chamber interchangeable, so that this can be optimally matched to the sliver to be measured.
- Figure 1 shows a measuring chamber 4 in its environment, i.e. at the end an inlet funnel 3, which is on a measuring funnel plate 2 is attached.
- the measuring chamber 4 is in the vicinity of take-off rollers 1 arranged, the sliver, not shown here by the Pull measuring chamber 4.
- FIG. 2 shows again the inlet funnel 3 with the measuring chamber 4 and a sliver 5.
- a measuring unit here 6 an electrical connection 7 and a gas or air duct 8 recognizable, which is connected to a source 9 for the air or gas flow is.
- FIG. 3 allows the structure of the device according to the invention more precisely recognize, elements already known from FIG. 2 have the same reference numerals.
- the Measuring unit 6 for example as an integrated pressure sensor or pressure transducer is formed in a manner known per se a pneumatic pressure into a corresponding electrical Converts signal.
- the measuring unit 6 borders on an antechamber 10, which via an opening or nozzle 12 with the interior 14 of the Measuring chamber 4 is connected.
- the measuring chamber 4 forms a cylindrical one Housing with an input and an output for that
- the sliver and the prechamber 10 lie with the measuring unit 6 in a cylindrical housing 15 that is perpendicular to the measuring chamber 4 is pending at this.
- the measuring chamber 4 has a recess 16 on.
- a sealing ring 13 seals the two cylindrical Housing in the recess 16 from each other.
- the antechamber 10 is via one or more bores 11, 17 with an annular channel 18 connected, which is connected to the air duct 8, which here as Air hose is formed.
- the bore 11, 17 forms a throttle or pre-nozzle, the pressure in the prechamber 10 delimited from a source of pressure or gas and thus causes a predetermined pressure drop.
- At 19 there is one Denoted axis, along which the nozzle 12, the pre-chamber 10 and the measuring unit 6 are lined up. In this version, the Nozzle 12 incorporated into the wall of the measuring chamber 4.
- Figure 4 shows an embodiment with an annular prechamber 20, which encloses a measuring chamber 21 and one on one side Air duct 22 and on the other side an electrical connection 23 and a measuring unit 24. At least two Nozzles 25 and 26 open here from the pre-chamber 20 into the measuring chamber 21. There is a pre-nozzle or throttle against the pressure source here designated 47.
- FIG. 5 shows a further embodiment with an axis 27 arranged nozzle 28, prechamber 29 and measuring unit 30, one electrical connection 31 and a pneumatic connection 32 are arranged coaxially.
- the prechamber 29 is connected to a Ring channel 33 supplied with compressed air.
- the ring channel 33 acts here as a throttle or pre-nozzle to the pre-chamber 29.
- This ring channel 33 can thus have a cylindrical shape. Is fed this ring channel 33 through two or more bores 33a, 33b, so that one can assume that the throttle in the ring channel 33 or pre-nozzle made of several bores 33a, 33b or constrictions can exist.
- Figure 6 shows an embodiment with parallel to a measuring chamber axis 34 arranged prechamber 35 and with an air supply 36 and a pneumatic connection 37 to the prechamber 35 for a corresponding pneumatic measuring unit. Also recognizable are a pre-nozzle 49 and a nozzle 39, which in the measuring chamber 40th flows.
- the device detects via the measuring unit, which is designed as a pressure sensor, the pressure fluctuations in the antechamber.
- the pressure in front of the pre-chamber is stabilized because it is shielded from interfering influences by the throttle or pre-nozzle that could come from the air supply.
- the prechamber also stores a certain volume of air can be the function of a filter for small pressure fluctuations that are independent of the sliver or for noise caused by the sliver become. So the pressure sensor only measures those pressure fluctuations, which are generated by the sliver and which are essential be considered.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Spinning Or Twisting Of Yarns (AREA)
- Preliminary Treatment Of Fibers (AREA)
- Measuring Fluid Pressure (AREA)
- Measuring Arrangements Characterized By The Use Of Fluids (AREA)
Description
Claims (9)
- Vorrichtung zur Bestimmung von Unregelmässigkeiten der Masse eines Faserbandes (5), mit einer Messkammer (4, 21, 40, 41, 42) mit einem Eingang und einem Ausgang für das Faserband, in die, über eine Öffnung oder Düse (12, 25, 26, 28, 39, 45, 46), ein von einer Quelle (9) kommender Gasstrom eingeführt wird, wobei eine Beziehung zwischen dem Druck im Gasstrom und den Unregelmässigkeiten im Faserband besteht, dadurch gekennzeichnet, dass eine Vorkammer (10, 20, 29, 35) vorgesehen ist, die einerseits über eine Drossel (11,17-Fig.3 ; 33-Fig.5 ; 47-Fig.4 ; 49-Fig.6) mit der Quelle (9) mit stabilem Druck und andererseits über die Öffnung oder Düse (12, 25, 26, 28, 39, 45, 46) an die Messkammer (4, 21, 40, 41, 42) angeschlossen ist und dass eine Messeinheit (6, 24) an diese Vorkammer angeschlossen ist.
- Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass eine kurze Reaktionszeit der Vorrichtung durch ein kleines Gasvolumen in der Vorkammer (10) erreicht ist.
- Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Messkammer (41, 42) austauschbar ausgebildet und angeordnet ist.
- Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass eine Anpassung der Vorrichtung an eine vorgegebene Dicke des Faserbandes wahlweise durch Einstellen des Druckes in der Quelle (9) und durch Austausch der Messkammer (41, 42) mit der Düse (45, 46) erfolgt.
- Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Vorkammer mehrere Düsen (25, 26) zur Messkammer hin aufweist.
- Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Quelle (9) zur Abgabe eines Gasstromes mit einstellbarem und stabilisiertem Druck ausgebildet ist.
- Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Vorkammer (20, 35) parallel zur Achse (34) der Messkammer (21,40) erstreckend ausgebildet ist.
- Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Vorkammer (20) die Messkammer (21) ringförmig umfassend ausgebildet ist.
- Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Vorkammer (20, 35) durch den Aussenumfang der Messkammer (21, 40) begrenzt ist.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH01828/95A CH690131A5 (de) | 1995-06-22 | 1995-06-22 | Vorrichtung zur Bestimmung von Unregelmässigkeiten der Masse eines Faserbandes. |
CH182895 | 1995-06-22 | ||
CH1828/95 | 1995-06-22 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0750060A1 EP0750060A1 (de) | 1996-12-27 |
EP0750060B1 true EP0750060B1 (de) | 1999-12-08 |
Family
ID=4219554
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96109122A Expired - Lifetime EP0750060B1 (de) | 1995-06-22 | 1996-06-07 | Vorrichtung zur Bestimmung von Unregelmässigkeiten der Masse eines Faserbandes |
Country Status (7)
Country | Link |
---|---|
US (1) | US5709011A (de) |
EP (1) | EP0750060B1 (de) |
JP (1) | JPH0913236A (de) |
CN (1) | CN1071810C (de) |
AT (1) | ATE187507T1 (de) |
CH (1) | CH690131A5 (de) |
DE (1) | DE59603835D1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19739186A1 (de) * | 1997-09-08 | 1999-03-11 | Truetzschler Gmbh & Co Kg | Vorrichtung zum Verbinden und Zuführen von Faserbändern, insbesondere Karden- oder Streckenbändern |
JPH11222735A (ja) * | 1997-10-30 | 1999-08-17 | Zellweger Luwa Ag | 長く延びた繊維中間製品を引込む装置 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH436779A (de) * | 1966-05-06 | 1967-05-31 | Zellweger Uster Ag | Verfahren und Vorrichtung zur Gewinnung von Messwerten, die dem Substanzquerschnitt von Textilmaterial, insbesondere von Faserbändern, entsprechen |
DE2657603A1 (de) * | 1976-12-18 | 1978-06-22 | Truetzschler & Co | Geraet zum messen eines faserbandes |
US4100791A (en) * | 1977-05-02 | 1978-07-18 | Fiber Controls Corporation | Auto-leveler |
GB1599222A (en) * | 1978-05-03 | 1981-09-30 | Fiber Controls Corp | Sliver auto-leveller |
CH635373A5 (de) * | 1979-04-06 | 1983-03-31 | Zellweger Uster Ag | Mess- und regeleinrichtung mit einem messtrichter zur bestimmung der durchzugskraft von faserbaendern. |
US4306450A (en) * | 1979-10-15 | 1981-12-22 | Rieter Machine Works, Ltd. | Apparatus for measuring a cross-sectional area of a travelling fiber sliver |
SU1381207A1 (ru) * | 1986-08-14 | 1988-03-15 | Всесоюзный Научно-Исследовательский Институт Легкого И Текстильного Машиностроения | Пневматический датчик линейной плотности волокнистого продукта |
JPH0765250B2 (ja) * | 1987-01-09 | 1995-07-12 | 中部精工株式会社 | 練条機 |
DE3713285A1 (de) * | 1987-04-18 | 1988-11-03 | Seydel Spinnereimasch | Vorrichtung zum spleissen und verflechten von faserbaendern |
US4947947A (en) * | 1989-11-27 | 1990-08-14 | Myrick-White, Inc. | Sliver measuring apparatus with overload relief |
RU2032780C1 (ru) * | 1990-11-11 | 1995-04-10 | Санкт-Петербургский институт текстильной и легкой промышленности им.С.М.Кирова | Пневматический датчик линейной плотности волокнистого материала |
US5361450A (en) * | 1992-12-31 | 1994-11-08 | Zellweger Uster, Inc. | Direct control of fiber testing or processing performance parameters by application of controlled, conditioned gas flows |
CH685506A5 (de) * | 1993-06-23 | 1995-07-31 | Zellweger Uster Ag | Vorrichtung zur Messung der Masse oder des Substanzquerschnitts von Faserbändern und Verwendung der Vorrichtung. |
-
1995
- 1995-06-22 CH CH01828/95A patent/CH690131A5/de not_active IP Right Cessation
-
1996
- 1996-05-15 JP JP8155919A patent/JPH0913236A/ja active Pending
- 1996-06-07 AT AT96109122T patent/ATE187507T1/de not_active IP Right Cessation
- 1996-06-07 EP EP96109122A patent/EP0750060B1/de not_active Expired - Lifetime
- 1996-06-07 DE DE59603835T patent/DE59603835D1/de not_active Expired - Fee Related
- 1996-06-21 US US08/670,220 patent/US5709011A/en not_active Expired - Fee Related
- 1996-06-21 CN CN96110228A patent/CN1071810C/zh not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
CN1071810C (zh) | 2001-09-26 |
US5709011A (en) | 1998-01-20 |
EP0750060A1 (de) | 1996-12-27 |
DE59603835D1 (de) | 2000-01-13 |
CH690131A5 (de) | 2000-05-15 |
JPH0913236A (ja) | 1997-01-14 |
ATE187507T1 (de) | 1999-12-15 |
CN1142547A (zh) | 1997-02-12 |
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