EP0524615A1 - Dispositif tateur dans un dispositif de detordage - Google Patents

Dispositif tateur dans un dispositif de detordage Download PDF

Info

Publication number
EP0524615A1
EP0524615A1 EP92112499A EP92112499A EP0524615A1 EP 0524615 A1 EP0524615 A1 EP 0524615A1 EP 92112499 A EP92112499 A EP 92112499A EP 92112499 A EP92112499 A EP 92112499A EP 0524615 A1 EP0524615 A1 EP 0524615A1
Authority
EP
European Patent Office
Prior art keywords
strand
roller
sensing device
analog
initiator
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
EP92112499A
Other languages
German (de)
English (en)
Other versions
EP0524615B1 (fr
Inventor
Lutz Seidel
Alois Gröninger
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.)
Erhardt and Leimer GmbH
Original Assignee
Erhardt and Leimer GmbH
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 Erhardt and Leimer GmbH filed Critical Erhardt and Leimer GmbH
Publication of EP0524615A1 publication Critical patent/EP0524615A1/fr
Application granted granted Critical
Publication of EP0524615B1 publication Critical patent/EP0524615B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
    • D06C5/00—Shaping or stretching of tubular fabrics upon cores or internal frames
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
    • D06B23/00—Component parts, details, or accessories of apparatus or machines, specially adapted for the treating of textile materials, not restricted to a particular kind of apparatus, provided for in groups D06B1/00 - D06B21/00
    • D06B23/08—Untwisting devices

Definitions

  • the invention relates to a sensing device specified in the preamble of claim 1.
  • the twisted strand running through a guide is scanned on the surface by a circular brush that can be rotated about an axis perpendicular to the strand axis.
  • the bristles engage in a form-fitting manner on the thread-like recesses in the surface of the strand resulting from the twisting and are deflected laterally.
  • the deflection moves the brush to one side or the other on its guide.
  • a wheel-like body of the brush is scanned contactlessly by two pneumatic servomotors, which alternately and depending on the position of the body actuate electrical switches with which a drive motor for two strand winders is switched on and off depending on the direction.
  • the response of this sensing device is relatively imprecise.
  • the strand is treated relatively roughly. Under certain circumstances, there is a strongly oscillating control behavior when the string is turned open.
  • the invention has for its object to provide a sensing device of the type mentioned that is structurally simple, insensitive to contamination and reliable and sensitive and provides strong and easy to evaluate useful signals for unwinding.
  • the feeler element resting on the strand is delicately displaced by the thread-like recesses of the twist.
  • the position or changes in position of the pushbutton element are permanently determined by the analog initiator, which is able to generate strong, useful analog signals proportional to the extent and direction of rotation.
  • the useful signals not only allow an immediate and exact statement about the direction of rotation and the extent of the twist, but also statements about changing the direction of rotation or the extent of the twist, whereby an exact control of the strand winder is always possible analogous to the twist.
  • the particular advantage can be seen in the fact that clear and clear useful signals are always available by means of the analog initiator and that the sensing device does not require any mechanical adjustment.
  • the initiator types according to claim 3 are also expedient.
  • a structurally simple embodiment emerges from claim 4. If the position encoder is decoupled from the rotatable probe element and only follows its movements along the guide, a straight line is sufficient as a reference contour, the movement of which the analog initiator can precisely sense.
  • the embodiment according to claim 5 is also particularly expedient.
  • Analog initiators are becoming more and more popular in various fields of technology. However, when scanning a straight reference contour, they usually have a curved signal curve that is compensated by a preselected curve as a reference contour to such an extent that an approximately straight signal curve results, which leads to very meaningful and usable useful signals for controlling the unscrewing.
  • the signal changes between the individual positions of the reference contour are continuous, so that an analog control of the unscrewing can easily be carried out.
  • the embodiment according to claim 7 is also technically simple.
  • the embodiment of claim 8 is advantageous so that the feeler element can sense the twist with only minimal slip. Furthermore, the measure of claim 9 is important so that the strand always remains in intimate contact with the feeler element.
  • the counter-roller is expediently identical in construction to the roller forming the sensing element, which is advantageous in terms of production technology and makes it possible to functionally replace one roller with the other roller.
  • a particularly expedient embodiment in which the device is arranged in a strand opening device in a support body containing a strand opening basket which can be driven for rotation and a deflecting roller can be seen from claim 12.
  • the strand twister can be used with the powerful and informative Control useful signals of the analog initiator analogously to the twist determined in each case, wherein the twist can particularly advantageously be completely eliminated within an extremely short lead section of the strand.
  • the result is a compact design with a short overall length, so that the strand opening device can be used without problems even with relatively small room heights.
  • a strand opening device V has a box-shaped support body T, in which a strand former S, a deflection roller U lying behind it in the direction of passage D and a sensing device F are arranged. With the sensing device F, signals can be generated which control the strand winder S by the amount in itself to turn up the twisted strand of goods.
  • the strand winder S is integrated in a frame 1, on which a drive motor 2 is fastened and connected to an annular base body 4 via a drive connection 3.
  • the base body 4 is rotatably mounted on the frame 1 by means of a bearing 5 and has a longitudinal axis 17 which coincides with a strand axis A in the embodiment shown.
  • Mounted on the base body 4 is a holder 7 for a pair of rollers P, the two clamping rollers 8, 9 of which limit a roller gap Z of variable width.
  • the base body 4 defines with the holder 7 and the pair of rollers P a rotating cage K.
  • the clamping rollers 8, 9, which are parallel to one another, are freely supported on swivel arms 10, 11.
  • the pivot arms 10, 11 are arranged in pivot bearings 12 of the holder 7 so as to be pivotable about axes parallel to the roller axes. At least one of the swivel arms 10, 11 is acted upon by a spring (not shown) in the direction of arrow 13.
  • the swivel arms 10, 11 are forcibly coupled by a common crank rod 14, which is articulated directly on the swivel arm 11 at a straight extension 11a in a pivot point 15 and on the swivel arm 10 in a pivot point 16 between the pivot bearing 12 and the pinch roller 9.
  • the distances between the articulation points 15, 16 and the pivot bearings 12 are the same size and are approximately a quarter of the length of the pivot arms 11 between the pivot bearings 12 and the axes of the pinch rollers 8, 9.
  • the pivot bearings 12 are equally spaced from the strand axis A and converge from the pivot bearings 12 when the clamping rollers 8, 9 are adjacent.
  • a peripheral collecting trough 18a is attached to the frame 1, on which a cup-shaped casing 18, preferably made of plastic, is mounted, which has a through opening 19 for the strand (not shown) in its pot bottom and covers the pair of rollers P from the outside.
  • a cup-shaped casing 18, preferably made of plastic On the underside of the frame 1, an inlet pipe 6 protrudes into the rotary cage K.
  • a collar-like flow guide part 20 is connected to the base body 4 and has a bent edge up to the collecting channel 18a protrudes.
  • At least one drain opening 21 is provided in the collecting trough 18a, to which a hose or a pipeline can optionally be connected.
  • the frame 1 is pivotally connected to the support body T by at least one pendulum support 23.
  • the pendulum support 23 is articulated on the support body T on a pendulum axis 22 and has a pivot point 24 on the frame 1 at the other end.
  • the pivot point 24 is adjustable in the longitudinal direction of the frame.
  • the frame 1 is movably connected to the support body T via a pin slot guide 25 on the side of the articulation point 24 opposite the longitudinal axis 17.
  • pins 26 of the frame 1 engage in guide slots 27 of the support body T.
  • a feeler element E is arranged in the sensing device F and will be discussed in more detail, to which a counter roller G is assigned.
  • the counter roller G is held on pivot arms 28 about an axis 29 of the support body T and is acted upon by a spring 30 in the direction of the sensing element E.
  • the probe element E can be adjusted transversely to the longitudinal direction of the support body T according to FIG.
  • the sensing element E and the counter roller G are assigned a scanning device H or H 1, which are each fixed to the support body T and each have an analog initiator J or J 1.
  • the feeler element E is a roller 31, which is arranged so as to be freely rotatable parallel to the axis of the deflection roller U, with grooves 32 running parallel to it in the circumferential direction in its jacket.
  • the roller 31 is rotatably and displaceably supported by rotary and sliding bearings 33 on an axis 34 mounted in bearings 35 in the support body T.
  • a position sensor 36 is provided, which in the exemplary embodiment shown is a sleeve 37 with an outer conical surface 38.
  • the conical lateral surface 38 has a generatrix which is oblique with respect to the axis 34 and serves as a reference contour 41 serves for the analog initiator J and is scanned by it for its respective distance in order to generate signals proportional to the position of the roller 31 on the axis 34.
  • the counter roller G is also designed as a roller 39 with grooves 40 running parallel in the circumferential direction and also axially displaceably mounted on an axis 34a. At one end of this roller 39 there is also a position transmitter 36a in the same design as on the roller 31, which is scanned by a further analog initiator J 1.
  • the twisted strand runs through the device in the strand passage direction D. First, it passes through the rotary cage K before it is subsequently deflected at the deflection roller U and then passed through the sensing device F.
  • the sensing device F senses the direction and the extent of the rotation and generates signals with which the drive motor 2 rotates the rotary cage K.
  • the strand is clamped in the nip Z between the pinch rollers 8, 9, the width of the nip Z dependent on the current strand thickness always being centered on the strand axis A because the two pinch rollers 8, 9 are synchronized by the crank rod 14 opposing spreading movement are forced and always keep the same distances from the strand axis A.
  • the strand By clamping in the nip Z, the strand is forced to follow the rotation of the rotary cage K, whereby the rotation is eliminated.
  • the feeler element E lies against the surface of the strand, the strand being pressed against the grooves 32 by the counter-roller G.
  • the twist of the strand produces thread-like depressions in its surface, the inclination of which during the continuous movement of the strand means that both the roller 31 and the counter roller G or 39 depend on the extent of the twist and the direction of the twist to one side or the other or be moved in opposite directions on axes 34 and 34a.
  • the analog initiators J and J1 key the respective position or the position changes Rollers 31 and 39 and generate the rotation proportional signals that are added, the signal of an initiator J 1 inverted, that is, reversed.
  • the total sensor signal from J1 and J2 indicates the value for the drive motor 2.
  • the rollers 31, 39 are shifted in the opposite direction and the sensor signal doubles, so that the drive motor 2 comes into operation.
  • the rollers 31, 39 shift in the same direction and the sensor signals cancel each other out.
  • This double arrangement of analog initiators J, J1 completely excludes error messages.
  • the frame 1 Since the strand does not always enter the rotary cage K from exactly below, the frame 1 is adjusted about the pendulum axis 22. If necessary, a certain inclination of the frame 1 is predetermined from the outset in order to create favorable run-in conditions for the strand.
  • the strand winder S is very effective thanks to the clamping of the clamping rollers 8, 9 and the always central roller gap Z and comes with an extremely short overall length and a short lead or lag of the strand.
  • the short length of the strand untwinder S and the short lead or trailing length result in a very low strand untwisting device V, which can be easily accommodated even with normal room heights and nevertheless ensures a sensitive untwisting effect of the strand even with a short lead length.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Ropes Or Cables (AREA)
  • Treatment Of Fiber Materials (AREA)
  • A Measuring Device Byusing Mechanical Method (AREA)
EP92112499A 1991-07-26 1992-07-22 Dispositif tateur dans un dispositif de detordage Expired - Lifetime EP0524615B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4124846A DE4124846C1 (fr) 1991-07-26 1991-07-26
DE4124846 1991-07-26

Publications (2)

Publication Number Publication Date
EP0524615A1 true EP0524615A1 (fr) 1993-01-27
EP0524615B1 EP0524615B1 (fr) 1995-03-15

Family

ID=6437100

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92112499A Expired - Lifetime EP0524615B1 (fr) 1991-07-26 1992-07-22 Dispositif tateur dans un dispositif de detordage

Country Status (4)

Country Link
EP (1) EP0524615B1 (fr)
BR (1) BR9202871A (fr)
DE (2) DE4124846C1 (fr)
ES (1) ES2069941T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115058850A (zh) * 2022-07-11 2022-09-16 绍兴康利德机械有限公司 一种退捻装置的自适应控制方法及系统

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104528454B (zh) * 2014-12-29 2016-09-07 常熟市龙略机电有限公司 展布机

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB794503A (en) * 1954-11-20 1958-05-07 Derrick Foxwell Improvements in or relating to means for untwisting material in twisted rope form
FR2394632A1 (fr) * 1977-06-15 1979-01-12 Bassani Mariano Dispositif pour le detordage des tissus mis en torsade
DE2818648A1 (de) * 1978-04-27 1979-10-31 Mituru Kuroda Vorrichtung zum feststellen der drehung eines stranges

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1370767A (en) * 1972-03-31 1974-10-16 Toyo Machinery Co Fabric twist detecting and correcting apparatus
DE2912340C2 (de) * 1979-03-28 1982-02-18 Erhardt & Leimer Kg, 8900 Augsburg Strangöffner zum Öffnen und Aufdrehen eines Textilstranges
DE3135452A1 (de) * 1981-09-08 1983-03-24 Erhardt & Leimer Kg, 8900 Augsburg Verfahren und vorrichtung zum beruehrungslosen erkennen und aufloesen des dralls bei einer in strangform laufenden bahn

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB794503A (en) * 1954-11-20 1958-05-07 Derrick Foxwell Improvements in or relating to means for untwisting material in twisted rope form
FR2394632A1 (fr) * 1977-06-15 1979-01-12 Bassani Mariano Dispositif pour le detordage des tissus mis en torsade
DE2818648A1 (de) * 1978-04-27 1979-10-31 Mituru Kuroda Vorrichtung zum feststellen der drehung eines stranges

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115058850A (zh) * 2022-07-11 2022-09-16 绍兴康利德机械有限公司 一种退捻装置的自适应控制方法及系统
CN115058850B (zh) * 2022-07-11 2023-08-18 绍兴康利德机械有限公司 一种退捻装置的自适应控制方法及系统

Also Published As

Publication number Publication date
ES2069941T3 (es) 1995-05-16
DE4124846C1 (fr) 1992-11-05
BR9202871A (pt) 1993-03-30
EP0524615B1 (fr) 1995-03-15
DE59201643D1 (de) 1995-04-20

Similar Documents

Publication Publication Date Title
EP0041743B1 (fr) Dispositif de commande de la position d'une bande de matériau en mouvement, en particulier un support de bobines
DE4139712A1 (de) Automatische oberflaechenabtastvorrichtung
DE3511564C2 (fr)
EP0261355B1 (fr) Dispositif pour égaliser le ruban de fibres ou la toison de fibres sur une carde, carde (laine) ou similaire
EP1190974B1 (fr) Machine de bobinage notamment pour du matériau sensible
EP0524615B1 (fr) Dispositif tateur dans un dispositif de detordage
EP0374587B1 (fr) Meuleuse de bords de verres de lunettes
EP2284061A1 (fr) Dispositif de détection d'une position de timon verticale d'un transpalette
EP0242608B1 (fr) Dispositif pour enrouler ou dérouler un courant continu de produits plats flexibles
DE19812524C2 (de) Vorrichtung zum Positionieren von Wellrohrschläuchen
DE2520851A1 (de) Vorrichtung zur erfassung von zustandsaenderungen mittels induktiver oder kapazitiver abgriffsysteme
EP0751243B1 (fr) Dispositif pour mesurer l'épaisseur et/ou l'inégalité de rubans de fibres
DE2059637C3 (de) Vorrichtung zum kontinuierlichen Abtasten der Florkante eines aus einem Grundgewebe mit aufgebautem Flor bzw. getuftetem Nadelfilz bestehenden Material
CH639757A5 (de) Messeinrichtung fuer werkstuecke mit unterbrochener oberflaeche.
DE4124847C2 (de) Strangaufdreher
DE3230368C2 (fr)
DE1926308U (de) Abstellvorrichtung an streckzwirnmaschinen.
DE4335156B4 (de) Regelvorrichtung für ein Mahlwerk
DE102015120292B3 (de) Gesteuerte Abspulvorrichtung
EP1837426A2 (fr) Appareil pour la surveillance du guidage d'une courroie
DE60201241T2 (de) Bürstgerät mit alternierenden Walzen
DE3733797C1 (de) Fadenspeicher- und -liefervorrichtung fuer Textilmaschinen,insbesondere Strickmaschinen
DE3722141C2 (de) Vorrichtung zur Vergleichmäßigung des Faserbandes oder -vlieses bei einer Karde, Krempel o. dgl.
EP1420098A2 (fr) Appareil pour détordre un tissu textile tubulaire et dispositif pour déterminer la position de torsion
EP0182241B1 (fr) Dispositif pour la filature à friction

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE ES IT

17P Request for examination filed

Effective date: 19930322

17Q First examination report despatched

Effective date: 19940905

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE ES IT

REF Corresponds to:

Ref document number: 59201643

Country of ref document: DE

Date of ref document: 19950420

ITF It: translation for a ep patent filed

Owner name: ING. C. GREGORJ S.P.A.

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2069941

Country of ref document: ES

Kind code of ref document: T3

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 19950705

Year of fee payment: 4

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19950821

Year of fee payment: 4

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF THE APPLICANT RENOUNCES

Effective date: 19960723

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19970402

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 19991007

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050722