EP0524615B1 - Fühlvorrichtung in einem Strangaufdreher - Google Patents

Fühlvorrichtung in einem Strangaufdreher Download PDF

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Publication number
EP0524615B1
EP0524615B1 EP92112499A EP92112499A EP0524615B1 EP 0524615 B1 EP0524615 B1 EP 0524615B1 EP 92112499 A EP92112499 A EP 92112499A EP 92112499 A EP92112499 A EP 92112499A EP 0524615 B1 EP0524615 B1 EP 0524615B1
Authority
EP
European Patent Office
Prior art keywords
roller
sensor device
analog
rope
strand
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
Application number
EP92112499A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0524615A1 (de
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/de
Application granted granted Critical
Publication of EP0524615B1 publication Critical patent/EP0524615B1/de
Anticipated expiration legal-status Critical
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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 of the type specified in the preamble of claim 1.
  • a sensing device is known from the document FR-A-2 394 632.
  • 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 probe 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 immediate and exact information on the direction of rotation and the extent of the twist, but also information on changing the direction of rotation or the extent of the twist, which enables exact control of the strand untwist 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.
  • the embodiment according to claim 5 is also particularly expedient.
  • Analog initiators are finding more and more input in various fields of technology. However, when scanning a straight reference contour, they usually have a curved signal curve, which 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 be carried out easily.
  • 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 rotation 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 Activate useful signals of the analog initiator analogously to the twist determined in each case, the twist being particularly advantageously 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 untwisted 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 parallel clamping rollers 8, 9 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 of 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 pot-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 pot-shaped casing 18 preferably made of plastic On the underside of the frame 1, an inlet pipe 6 projects 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 pipe 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 in the circumferential direction in its jacket.
  • the roller 31 is rotatably and displaceably mounted with rotary and sliding bearings 33 on an axis 34 mounted in bearings 35 in the support body T.
  • a position sensor 36 At one end of the roller 31 there is a position sensor 36, 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 roll G is also designed as a roll 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 twist 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 causes both the roller 31 and the counter roller G or 39 to depend on the extent of the twist and the direction of the twist on one side or the other or be moved in opposite directions on axes 34 and 34a.
  • the analog initiators J and J1 feel the respective position or the changes in position 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 nip Z and manages 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)
  • A Measuring Device Byusing Mechanical Method (AREA)
  • Treatment Of Fiber Materials (AREA)
EP92112499A 1991-07-26 1992-07-22 Fühlvorrichtung in einem Strangaufdreher Expired - Lifetime EP0524615B1 (de)

Applications Claiming Priority (2)

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

Publications (2)

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

Family

ID=6437100

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92112499A Expired - Lifetime EP0524615B1 (de) 1991-07-26 1992-07-22 Fühlvorrichtung in einem Strangaufdreher

Country Status (4)

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

Families Citing this family (2)

* 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
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

Family Cites Families (6)

* 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
GB1370767A (en) * 1972-03-31 1974-10-16 Toyo Machinery Co Fabric twist detecting and correcting apparatus
IT1083518B (it) * 1977-06-15 1985-05-21 Bassani Mariano Sistema per la detrocitura di tessuti in corda
DE2818648C2 (de) * 1978-04-27 1987-02-12 Mituru Kyoto Kuroda Vorrichtung zur Ermittlung des Dralles eines Stranges aus gewirktem oder gewebtem Stoff und zum Steuern einer Aufdrehvorrichtung für den Strang
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

Also Published As

Publication number Publication date
ES2069941T3 (es) 1995-05-16
EP0524615A1 (de) 1993-01-27
BR9202871A (pt) 1993-03-30
DE59201643D1 (de) 1995-04-20
DE4124846C1 (enrdf_load_stackoverflow) 1992-11-05

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