EP0036002B1 - Dispositif de commande de la vitesse de rotation des broches d'un banc a broches - Google Patents

Dispositif de commande de la vitesse de rotation des broches d'un banc a broches Download PDF

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Publication number
EP0036002B1
EP0036002B1 EP80901721A EP80901721A EP0036002B1 EP 0036002 B1 EP0036002 B1 EP 0036002B1 EP 80901721 A EP80901721 A EP 80901721A EP 80901721 A EP80901721 A EP 80901721A EP 0036002 B1 EP0036002 B1 EP 0036002B1
Authority
EP
European Patent Office
Prior art keywords
control
spindle
motor
der
spindles
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
Application number
EP80901721A
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German (de)
English (en)
Other versions
EP0036002A1 (fr
Inventor
Emil Briner
Peter Novak
Hermann Gasser
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.)
Maschinenfabrik Rieter AG
Original Assignee
Maschinenfabrik Rieter AG
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Filing date
Publication date
Application filed by Maschinenfabrik Rieter AG filed Critical Maschinenfabrik Rieter AG
Publication of EP0036002A1 publication Critical patent/EP0036002A1/fr
Application granted granted Critical
Publication of EP0036002B1 publication Critical patent/EP0036002B1/fr
Expired 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
    • D01H1/00—Spinning or twisting machines in which the product is wound-up continuously
    • D01H1/14—Details
    • D01H1/20—Driving or stopping arrangements
    • D01H1/32—Driving or stopping arrangements for complete machines
    • D01H1/34—Driving or stopping arrangements for complete machines with two or more speeds; with variable-speed arrangements, e.g. variation of machine speed according to growing bobbin diameter

Definitions

  • the present invention relates to a device for controlling the speed of the spindles of a roving machine equipped with spindles and associated wings in function of the growing bobbin diameter with a variably adjustable variator for driving the spindles by means of a step-by-step shifting shaft.
  • a fiber sliver is produced and wound with a wing with parallel windings on the spool of each spinning station. Since the fiber sliver must be able to be warped for the feeding of the next processing stage, it is given a very moderate rotation, which is just enough to feed the fiber sliver to a drafting system of the subsequent processing stage without tension, but results in an undesirable misalignment in the fuse at the slightest tensile stress.
  • the vane normally rotates at a constant speed, while the speed of the spindle is adjusted in accordance with the growing diameter of the coil: for this purpose, the spindle executes the spindle bench stroke between two reversing points that move spatially as a function of the coil diameter, with which it is ensured that the The fiber sliver is wound onto the coil surface with parallel windings, and that the coil extremities are given a conical shape.
  • This invention deals with the problem of adapting the spindle speed to the growing spool diameter, while the shortening of the spindle bench stroke as a function of the spool diameter is not affected by it.
  • the increase in the coil diameter depends crucially on the technological properties of the fuse, such as. B. fiber quality, number, twist, volume, etc., from.
  • z. B. the volume of such a fuse, or its cross section is climate-dependent, d. H. that it can fluctuate over time, and that even such minimal fluctuations already represent a disruptive factor in the wind-up process, which must be corrected with suitable means.
  • Such a solution is e.g. B. is shown in CH-A-569 806.
  • a control surface is used here as the correction rail, which exerts a correcting influence over the entire area of the belt displacement of the conical gear.
  • it is of course also necessary to adapt the average speed of the belt displacement to the match volume, which is normally solved by interposing a gear transmission with interchangeable gears.
  • a characteristic of this known solution is the use of an infinitely variable variator, which is adjusted with a shift shaft that is gradually rotated further.
  • the disadvantages of this known solution lie in the poor operability and the complexity thereof.
  • the adjustment of the organs both for the rough regulation e.g.
  • Another disadvantage of the known device is that it requires a high level of maintenance, in particular cleaning and lubrication work.
  • Another disadvantage of such a device is the fact that the regulatory bodies must be equipped with special restoring means by means of soft z. B. the belt of the double cone drive when stationary Machine must be returned to the initial position after relieving the belt. For this purpose, e.g. B. a relief device for the cones and a separate reset motor, which only comes into action during the very short reset operation, necessary, which makes the device even more complicated and expensive.
  • the spindle speed is controlled so that the sliver tension remains constant (e.g. according to FR-A-815 560), which presupposes that the sliver tension is measured.
  • a device for controlling the speed of the spindles of a pre-spinning machine equipped with spindles and associated blades in function of the growing spool diameter with a variably adjustable variator for the drive of the spindles by means of a step-by-step shifting shaft in that the shifting shaft with an electric adjustment motor receiving the switching pulses is driven by a motor controller, the motor controller having a programmable setpoint generator, which can be externally set to a specific number of switching pulses per switching step, and an adjustable correction element, with which the pulse number determined on the setpoint generator can be adjusted by adding or Subtracting correction pulses can be corrected at each switching step, contains, and that the command to issue switching pulses of the motor control by one scans the reversal points of the spindle bench stroke constant apparatus is issued while the setpoint generator and / or the correction element are in control connection with an apparatus determining the growing coil diameter.
  • Fig. 1 is equipped with spindles and associated wings roving machine with its necessary for the understanding of this invention work organs shown schematically and simplified.
  • Such a roving machine has, in one or more rows on a spindle bench 1, rotatably mounted spindles 2, of which only one is shown in the figure.
  • the spindle bench 1 performs a vertical upward and downward movement and for this purpose is guided in vertical guides (not shown) and coupled with a lifting mechanism which is only shown schematically here.
  • the spindle bench 1 is in at least two locations (only one is shown in FIG. 1) with one of the vertical debris between an upper deflection roller 4 and a lower guide roller 5 revolving chain 3 attached.
  • One of the rollers 4 and 5 is driven alternately in both directions of rotation with a system which is not shown here, but is known in the rest, so that the spindle bench 1 executes an alternating up and down movement, as indicated by the arrow m.
  • the choice of the lifting mechanism for the vertical movement of the spindle bank 1, which is necessary for the distribution of the fiber sliver on the surface of the spool, is of no importance in the context of this invention; it is only essential that the reversal of the vertical movement is carried out by means of an apparatus scanning the spindle bench deflection stroke, as will be explained below.
  • the machine can be equipped with a lifting mechanism for a constant stroke, with which the coils are produced with cylindrical ends, or for a stroke which decreases in function of the coil diameter, with which coils with conical ends are produced.
  • the solution with the decreasing stroke was chosen here, since this corresponds to the usual case in the spinning mill.
  • the solution described here can also be used with advantage, as will become clear in the course of the description, also advantageously in a roving machine with a constant stroke.
  • a wing 7 is rotatably mounted in a fixed wing bench 8.
  • the roving machine shown here thus has so-called “suspended” wings 7; however, this is also not a necessary condition in the context of the invention: this would not be the case with any other known solution of roving machines (for example with a wing "placed” on the spindle, with so-called “closed” wings, ie those which are only supported at the top) but driven, etc.) readily applicable.
  • a drafting system consisting of several continuous cylinders 9 and 10 and corresponding pressure rollers 11 and 12 is also provided.
  • the sliver 14 coming from a can 13 is drawn to a desired fineness in the drafting device 9 to 12 and then, in a known manner and with the granting of rotation, is fed to the wing 7 and finally to the bobbin 6 of the spindle 2.
  • the present invention relates to a device for controlling these wind conditions.
  • An electric motor 15 drives the main shaft 16 at a constant speed.
  • a conical gear 17 which is in engagement with the conical gear 18 of a vertical shaft 19.
  • the shaft 19 rotatably supports a pulley 20 for a belt 21, which sets the wing 7 in rotation by means of a pulley 22 placed on the wing 7.
  • the shaft 19 rotates stationary in space, while the spindle bench 1 performs the previously described up and down movement (according to arrow m); for this reason the spindle bank 1 has a wide bore 23 for the shaft 19.
  • the deepest position 1 of the spindle bench 1 is shown in dashed lines in FIG. 1.
  • the shaft 19 carries a conical gearwheel 24, with which a conical gearwheel 25 is in engagement for driving the drafting device 9 to 12 of the prespinning machine.
  • the continuous cylinders 9 and 10 of the drafting system are supported in the supports 26 and 27, which are firmly connected to the wing bench 8; the support 27 is further designed as a gear, d. H. also contains the gears (not shown) for the transmission of the rotary movement of the gear 25 to both (or all) cylinders 9 and 10 of the drafting system, taking into account the speed difference between the cylinders 9 and 10 corresponding to the delay.
  • the wing 7 and the drafting system are therefore always driven synchronously with one another, since they are rigidly connected kinematically.
  • This invention is based on the above finding that (without direct measurement of the sliver tension) correct control of the spindle speed only as a combination of a basic control which gives the mean values of the technological parameters (number of the sliver, fiber properties, ie fineness, degree of maturity, crimp, etc.) Takes into account, and a correction control that can be finely adjusted over the entire coil structure is possible.
  • the main shaft 16 serves as the input shaft of a continuously variable variator 28.
  • the output shaft 29 of the variator 28 rotates at a regulated speed and drives, via angular gear 30/31, vertical shaft 32 Rie mens pulley 33, belt 34, whorl 35, the spindle 2.
  • Both the belt 21 and the belt 34 are preferably non-slip toothed belts, and in this case the pulleys 20, 22 and 33 and the whorl 35 are equipped with a suitable toothing.
  • the speed of the spindle 2 is adapted to the existing winding conditions by appropriate adjustment of the continuously variable variator 28, the variator 28 can be adjusted with a step-by-step shifting shaft 36, the control of which relates to the actual object of the invention.
  • the shift shaft 36 rotated step by step is driven by means of an adjusting motor 39 receiving the switching impulses from a motor control 37 via an electrical line 38.
  • the gradual rotation of the selector shaft 36 is caused by the layer-by-layer deposition of the sliver windings on the coil surface, which requires a gradual adjustment of the spindle speed in accordance with the sudden increase in the coil diameter.
  • the selector shaft 36 carries a belt pulley 40 for a toothed belt 41, with which the belt pulley 42 of an apparatus 47 consisting of worm wheel 43, toothed wheel 44 and template 45 with toothed rack 46 for driving the coil diameter is driven.
  • the apparatus 47 further includes a contactor 48, which can be brought into successive contact with a plurality of contact takers 49 lying along the movement path of the contactor 48. Via the line 50, the contact takers 49 are connected to the motor control 37 in such a way that the position of the contact generator 48 can be transmitted to the majority of the contact takers 49 of the motor control 37.
  • the functioning of the apparatus 47 for example described here, for determining the coil diameter is now as follows: If the coil 6 is empty, i. H. if there is an empty sleeve (not shown) on the spindle 2, the variator 28 is in its initial position, since in this position the spindle 2 must assume one of its extreme speeds. In this position, the template 45, which is kinematically rigidly connected to the switching shaft 36 of the variator 28, is also arranged in its left-hand extreme position, so that the contactor 48 is in contact with the left-hand contact 49a; Via the line 50, the motor control 37 is given a signal which corresponds to this initial position or the smallest coil diameter.
  • the variator 28 When the diameter of the coil 6 grows, the variator 28 must be adjusted, which is done by gradually rotating the selector shaft 36: due to the rigid coupling shown between the selector shaft 36 and the template 45, or contactor 48, each position of the selector shaft 36 or the variator 28, a specific position of the template 45, since each position of the variator 28 corresponds to a specific coil diameter.
  • the result of this is that each layer of the template 45 also corresponds to a specific coil diameter.
  • the apparatus 47 is thus able to output a signal via the line 50 to the motor control 37, which signal corresponds to the current coil diameter or the current range of the coil diameter in accordance with the division of the contacts 49 over the path of the contactor 48.
  • the apparatus 47 described here for determining the coil diameter is not the only one which can be considered in the context of this invention. In principle, any apparatus which can determine the diameter or the diameter ranges can be used in the context of this invention. So z. B. also a direct scanning of the coils, for. B. mechanically with direct contact with the same or z. B. optically non-contact can be used without further ado, since the only condition is that a signal is to be emitted via the electrical line 50 of the motor control 37, which contains the information about the instantaneous diameter of the coil 6, optionally divided into a certain number of layers , contains.
  • the solution of the apparatus 47 shown has the particular advantage that, in addition to determining the current coil diameter, it can also control the spindle bench stroke during the coil build-up in order to achieve the desired coil 6 contour, as will now be shown.
  • the template 45 is used, which corresponds to a curve 51, equal to the desired profile of the coil 6 in cross-section (e.g. with two conical end parts).
  • a toggle switch 52 is attached to the spindle bench 1 and is switched over at the curve 51 at the top and bottom during the lifting movement of the spindle bench 1.
  • the toggle switch 52 thus gives the motor control 37, via the electrical line 53, a signal at each reversal point of the spindle bench stroke, which is required for the control according to the invention, as will be explained later.
  • the overturning of the switch 52 via transfer elements (not shown), the reversal of the lifting movement, i. H. reverse the chain 3; however, this is not a requirement in the context of this invention.
  • FIG. 1 Another embodiment of an apparatus which can also be used for determining the coil diameter is shown in dashed lines in FIG. 1, but is no longer connected to the apparatus for scanning the reversal points. It is shown purely schematically how the shaft of the pulley 42 (or the switching shaft 36 directly) is coupled with a potentiometer 54; by rotation of the switching shaft 36, the potentiometer 54 is thus also rotated further and further, each of its positions corresponding to a specific coil diameter. The potentiometer 54 is also connected to the motor control 37 by an electrical line 55 and gives it a signal which corresponds to the current coil diameter.
  • the structure of the motor control 37 according to the invention is contained in the block diagram of FIG. 2, the same elements of FIG. 1 having been given the same reference numbers.
  • the motor control 37 contains a programmable setpoint generator 56, which can be set externally to a specific number of switching pulses per switching step.
  • This relationship which e.g. B. the known mathematical relationship given by the geometrical dimensions of the coil must be regarded as a first approximation of the control function, which must be overlaid by a correction which changes in function of the diameter of the coil structure. This must take account of the external influences on the coil formation, as mentioned in the introduction.
  • the setting can e.g. B. consist in the fact that the setpoint generator 56 enters a specific function V ⁇ f (D), which is nowadays carried out by various means (e.g. via a programmable computer or by scanning a template, e.g. mechanically or optically etc. ) can be solved.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
  • Supporting Of Heads In Record-Carrier Devices (AREA)
  • Manufacturing Optical Record Carriers (AREA)
  • Cleaning Or Drying Semiconductors (AREA)

Claims (6)

1. Dispositif pour commander le nombre de tours des broches d'une machine de préparation de filature, qui est équipée avec des ailettes en appartenance aux broches, en fonction de l'augmentation du diamètre des bobines, avec, pour la commande des broches, un variateur qui est réglable d'une manière continue au moyen d'un arbre de changement de vitesse qui poursuit sa rotation pas à pas, caractérisé par le fait que l'arbre de changement de vitesse (36) est commandé par un moteur électrique de réglage (39) qui reçoit des impulsions de marche par un moteur de commande (37), procédé dans lequel le moteur de commande (37) possède un donneur de valeur de consigne programmable (56) qui, de l'extérieur, peut être réglé sur un nombre déterminé d'impulsions de marche, par pas de marche, ainsi qu'un élément de correction (60, 65), réglable de l'extérieur, par lequel le nombre déterminé d'impulsions mis dans le donneur de valeur de consigne (56) peut être corrigé, à chaque pas de marche, par addition ou soustraction d'impulsions de correction, et que l'ordre pour la sortie d'impulsions de marche est donné au moteur de commande (37) par un appareil (51 à 53) tâtant les points d'inversion de la course du banc porte-broches, tandis que le donneur de valeur de consigne (56) et/ou l'élément de correction (60, 65) se trouvent en liaison de commande avec un appareil (47; 54, 55) déterminant le diamètre croissant des bobines.
2. Dispositif selon revendication 1, caractérisé par le fait que aussi bien le donneur de valeur de consigne (56) que l'élément de correction (60,65) sont librement accessibles au personnel de servitude, et peuvent être réglés pendant la marche de la machine de préparation de filature.
3. Dispositif selon revendication 1, caractérisé par le fait que le variateur (28) possède, sur sa zone de réglage, un rapport de multiplication qui réalise, lors de son déplacement linéaire, un premier approchement de la relation, connue en soi, entre le nombre de rotations de broches et le diamètre de bobines, et que le donneur de valeur de consigne (56) est régie, pour toute la construction de bobine, sur un nombre constant d'impulsions de. marche par pas de marche.
4. Dispositif selon revendication 1, caractérisé par le fait le moteur de réglage (39) est un moteur pas à pas.
5. Dispositif selon revendication 1, caractérisé par le fait que l'élément de correction (60). consiste en un répartiteur à voies croisées (65) sur lequel une des coordonnées signifie le diamètre de bobines et l'autre la correction positive ou négative du nombre d'impulsions.
6. Dispositif selon revendication 1, caractérisé par le fait que l'appareil (47; 54, 55) déterminant le diamètre de bobines est accouplé rigidement et cinématiquement avec l'arbre de changement de vitesse (36) du variateur (28).
EP80901721A 1979-09-28 1981-04-08 Dispositif de commande de la vitesse de rotation des broches d'un banc a broches Expired EP0036002B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH876879 1979-09-28
CH8768/79 1979-09-28

Publications (2)

Publication Number Publication Date
EP0036002A1 EP0036002A1 (fr) 1981-09-23
EP0036002B1 true EP0036002B1 (fr) 1983-07-27

Family

ID=4344513

Family Applications (1)

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EP80901721A Expired EP0036002B1 (fr) 1979-09-28 1981-04-08 Dispositif de commande de la vitesse de rotation des broches d'un banc a broches

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US (1) US4375744A (fr)
EP (1) EP0036002B1 (fr)
JP (1) JPS638213B2 (fr)
AT (1) ATE4332T1 (fr)
AU (1) AU538097B2 (fr)
BE (1) BE885439A (fr)
BR (1) BR8008852A (fr)
DE (1) DE3064419D1 (fr)
ES (1) ES8203114A1 (fr)
HK (1) HK70284A (fr)
IN (1) IN153941B (fr)
IT (1) IT1194694B (fr)
WO (1) WO1981000866A1 (fr)

Families Citing this family (18)

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Publication number Priority date Publication date Assignee Title
DD234040B5 (de) * 1985-01-25 1994-03-24 Grossenhainer Textilmaschinen Verfahren zur steuerung von vorspinnmaschinen mit dezentralem antriebssystem
JPS5865012A (ja) * 1981-10-09 1983-04-18 Toyoda Autom Loom Works Ltd 粗紡機の粗糸巻取張力自動制御方法および装置
JPS5865013A (ja) * 1981-10-12 1983-04-18 Toyoda Autom Loom Works Ltd 粗紡機の粗糸巻取張力の制御方法および装置
EP0134195B1 (fr) * 1983-08-02 1987-04-29 Howa Kogyo Kabushiki Kaisha Montage pour le réglage de la vitesse du fil dans les dispositifs de bobinage
US4930520A (en) * 1985-05-16 1990-06-05 Algotek, Inc. Earpiece for auditory testing of infants
JP2652962B2 (ja) * 1989-04-07 1997-09-10 豊和工業株式会社 精紡機の運転制御方法
JP2804789B2 (ja) * 1989-06-30 1998-09-30 豊和工業株式会社 粗紡機における粗糸巻取装置
FR2687884B1 (fr) * 1992-02-24 1994-04-08 Alcatel Cit Codec videc, notamment visiophonique.
US5463557A (en) * 1992-05-15 1995-10-31 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Roving machine
US5706642A (en) * 1996-10-08 1998-01-13 Haselwander; Jack G. Variable twist level yarn
DE19649909C1 (de) * 1996-12-02 1997-07-31 Zinser Textilmaschinen Gmbh Vorspinnmaschine
US5826582A (en) * 1997-05-22 1998-10-27 Natus Medical Inc. Ear phone assembly for use with a hearing screener
US5913309A (en) * 1997-05-22 1999-06-22 Natus Medical Inc. Disposable element for use with a hearing screener
AU5424400A (en) * 1999-02-11 2000-09-04 Lakshmi Machine Works Limited A ring spinning and twisting machine
US7133715B1 (en) * 2000-01-07 2006-11-07 Natus Medical Inc. Hearing evaluation device with noise detection and evaluation capability
US20050157899A1 (en) * 2004-01-15 2005-07-21 Gabriel Raviv Molded earpiece assembly for auditory testing
US7299615B2 (en) * 2004-06-18 2007-11-27 Mannington Mills, Inc. Variable twist level yarn using fluid twisting
US7288306B2 (en) * 2004-08-25 2007-10-30 Mannington Mills, Inc. Textile substrate having low variable twist yarn

Family Cites Families (6)

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Publication number Priority date Publication date Assignee Title
DE1204982B (de) * 1961-11-27 1965-11-11 Heinz Bechlenberg Dr Ing Verfahren und Vorrichtung zum selbsttaetigen Steuern der Spulendrehzahl und der Spulenbankgeschwindigkeit an Vorspinnmaschinen in Abhaengigkeit vom Spulendurchmesser
FR1401075A (fr) * 1963-07-19 1965-05-28 Zinser Textilmaschine G M B H Procédé et dispositif pour commander le formage des bobines sur les bancs à broches
FR1566512A (fr) * 1968-03-12 1969-05-09
JPS5248652B2 (fr) * 1973-05-25 1977-12-12
JPS53122828A (en) * 1977-04-01 1978-10-26 Aichi Spinning Co Method of and device for winding yarn under constant tension in bobbin lead spinning machine
DE2817711C2 (de) * 1978-04-22 1983-08-18 Schubert & Salzer Maschinenfabrik Ag, 8070 Ingolstadt Vorrichtung zum Steuern des Spulenantriebes einer Flügel-Vorspinnmaschine

Also Published As

Publication number Publication date
BE885439A (fr) 1981-03-26
IN153941B (fr) 1984-09-01
US4375744A (en) 1983-03-08
AU6332480A (en) 1981-04-14
JPS56501249A (fr) 1981-09-03
WO1981000866A1 (fr) 1981-04-02
EP0036002A1 (fr) 1981-09-23
HK70284A (en) 1984-09-21
ES495765A0 (es) 1982-03-01
ES8203114A1 (es) 1982-03-01
AU538097B2 (en) 1984-07-26
IT1194694B (it) 1988-09-22
BR8008852A (pt) 1981-07-21
ATE4332T1 (de) 1983-08-15
JPS638213B2 (fr) 1988-02-22
DE3064419D1 (en) 1983-09-01
IT8024907A0 (it) 1980-09-25

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