EP0334930B1 - Kettenwirkmaschine mit mittels versatzschrittmotoren verstellbaren legebarren - Google Patents

Kettenwirkmaschine mit mittels versatzschrittmotoren verstellbaren legebarren Download PDF

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Publication number
EP0334930B1
EP0334930B1 EP88908663A EP88908663A EP0334930B1 EP 0334930 B1 EP0334930 B1 EP 0334930B1 EP 88908663 A EP88908663 A EP 88908663A EP 88908663 A EP88908663 A EP 88908663A EP 0334930 B1 EP0334930 B1 EP 0334930B1
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EP
European Patent Office
Prior art keywords
racking
sensor
indicator
offset
knitting machine
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
EP88908663A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0334930A1 (de
Inventor
Helmut Schäfer
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.)
Fortron Helmut Schafer & Co KG GmbH
LIBA Maschinenfabrik GmbH
Original Assignee
Fortron Helmut Schafer & Co KG GmbH
LIBA Maschinenfabrik 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 Fortron Helmut Schafer & Co KG GmbH, LIBA Maschinenfabrik GmbH filed Critical Fortron Helmut Schafer & Co KG GmbH
Publication of EP0334930A1 publication Critical patent/EP0334930A1/de
Application granted granted Critical
Publication of EP0334930B1 publication Critical patent/EP0334930B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B35/00—Details of, or auxiliary devices incorporated in, knitting machines, not otherwise provided for
    • D04B35/10—Indicating, warning, or safety devices, e.g. stop motions
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B27/00—Details of, or auxiliary devices incorporated in, warp knitting machines, restricted to machines of this kind
    • D04B27/10—Devices for supplying, feeding, or guiding threads to needles
    • D04B27/24—Thread guide bar assemblies
    • D04B27/26—Shogging devices therefor

Definitions

  • the invention relates to a warp knitting machine, the laying bars of which are adjusted according to a pattern by means of offset stepping motors, which receive their offset information in the form of a specific number of offset pulses (number of offset pulses) from a pattern memory of a control device.
  • a device for such a control of a warp knitting machine is known from DE-PS 24 19 694.
  • a warp knitting machine controlled in this way must be switched off, for example, because of nighttime work interruptions, and there are also operational interruptions due to power failures.
  • this is done in that - for determining and correcting the position of the laying bars in the Underlaid position of the warp knitting machine - with each laying bar the indicator of an electrical proximity switch is connected, the sensor of which is attached to a measuring slide which is displaceable in the direction of movement of the laying bars and which can be displaced by means of a measuring step motor over the displacement area of the indicator from a starting position which corresponds to the zero position of the laying bar and that a pulse counter which counts the steps of the measuring step motor in this shift to cover the indicator and sensor is provided, the counting result of which is compared with the offset pulse number defining the respective sample shift, taken from the sample memory by means of a comparator, and the difference determined by the comparator the offset step motor in question is entered as the correction pulse number.
  • the respective position of the individual laying bars is determined absolutely by means of the caliper, by counting the number of steps taken by the measuring stepping motor when moving the caliper in the form of electrical pulses, with one per bar individual number of impulses results.
  • the counting of this number of pulses begins at an initial position of the caliper which corresponds to the zero offset position of the laying bar or bars.
  • This pulse number which is taken as the result of a pulse counter counting the steps of the measuring step motor, is now compared with the offset pulse number, which can be found as offset information in the pattern memory of the control device and which, depending on the stored pattern, indicates the position in which the laying bar in question is located Has.
  • This comparison of the offset pulse number derived from the sample memory with the count result of the abovementioned pulse counter is now carried out by means of a comparator.
  • the difference determined by this comparison represents a correction pulse number, which is then input to the offset motor in question.
  • the offset stepping motor now carries out a corresponding number of steps in the forward or backward direction, with which the laying bar in question is brought into the position in which it should stand according to the number of offset pulses taken from the sample memory.
  • the warp knitting machine can then be started, the laying bars being in the correct position for the pattern in question.
  • the measuring stepping motor In order to be able to determine the position of each laying bar by means of the caliper with particular accuracy, it is advisable to give the measuring stepping motor a smaller pitch than the offset stepping motor, i.e. the number of pulses required for a certain displacement path of a sensor and supplied to the measuring step motor in question is a multiple of the number of pulses required for the same displacement path is fed to the offset stepper motor. For example, if for the displacement by a needle division of the offset stepper motor must receive eight pulses, then the measuring stepper motor can carry out four times the number of steps for the same displacement path, that is to say 32 steps.
  • the indicator and sensor of the proximity switch can of course be interchanged, i.e. it is also possible to attach the indicator to the caliper and to couple the sensor to the bar.
  • Figure 1 shows three laying bars 1, 2, 3 of a warp knitting machine constructed in a known manner, which are moved back and forth over the push rods 4, 5 and 6 according to a predetermined pattern.
  • the push rods 4, 5 and 6 are coupled to the push nut pieces 7, 8 and 9 under prestress by the springs 56, 57, 58, which end in the nut parts 10, 11, 12 on their side facing away from the push rods 4, 5 and 6.
  • These nut parts 10, 11, 12 are penetrated by spindles 13, 14, 15 provided with a corresponding thread, so that when the spindles 13, 14, 15 rotate, they rotate in a known manner secured push nut pieces 7, 8 and 9 are moved longitudinally. They use the push rods 4, 5 and 6 to give the laying bars 1, 2 and 3 the necessary displacement.
  • the rotation of the spindle 13, 14, 15 required for this displacement takes place by means of the offset stepping motors 16, 17 and 18 driving these spindles.
  • the offset stepping motors 16, 17 and 18 receive the respective offset information in the form of offset pulses from a control unit 19, on the function of which in the In connection with Figure 2 is discussed in more detail.
  • a control unit 19 on the function of which in the In connection with Figure 2 is discussed in more detail.
  • more or fewer than three such arrangements can be provided with the bars 1, 2 and 3.
  • the indicators 20, 21 and 22 of proximity switches which are equipped with associated sensors 23, 24, 25, are attached to the thrust nut pieces 7, 8 and 9. These sensors 23, 24, 25 are attached to the caliper 26.
  • a proximity switch thus consists of an indicator 20 and the associated sensor 23.
  • the proximity switches are known components which emit an electrical pulse when their indicator and sensor are covered.
  • the caliper 26 is penetrated by the spindle 27 which is driven by the measuring step motor.
  • the spindle 27 is received by the caliper 26 in a nut thread, so that when the spindle 27 is rotated, the caliper 26, which is secured against rotation, moves in the direction of the offset movement of the bars 1, 2 and 3.
  • the caliper 26 is shown with the sensors 23, 24 and 25 at a distance from the push nut pieces 7, 8 and 9. This is done here for the sake of clarity of presentation. In fact, the caliper 26 is mounted closely adjacent to the thrust nut pieces 7, 8 and 9, in any case in such a way that the indicators 20, 21 and 22 with the associated sensors 23, 24 and 25 are in working order of the proximity switch concerned can be brought to the required coverage.
  • the offset step motors 16, 17 and 18 receive their individual offset information in the form of offset pulses, as a result of which the offset step motors 16, 17 and 18 carry out a corresponding number of turning steps, with the result that the laying bars 1, 2 and 3 are carried out in the manner described above then the desired and required shift is given.
  • the offset stepper motors 16, 17 and 18, as already said above receive their offset pulses from the control unit (see FIG. 2).
  • the control unit 19 also supplies the pulses necessary for driving the measuring step motor 28.
  • the length of such a noticeable misalignment of a laying bar 1, 2 or 3 is now determined as follows:
  • the warp knitting machine is stopped and in such a way that it stops in an angular range of the main shaft 34 which corresponds to the position of the laying bars underlaying.
  • the underlay position is in fact the position that the laying bars take during normal operation of the machine in order to carry out the offset required for the patterning.
  • the underlay position thus encompasses the entire offset area of the laying bars for the pattern-based laying of the threads.
  • the warp knitting machine can be guided, for example, in a crawl gear.
  • the bar 3 and thus the indicator 22 is in the position indicated by the dash-dotted line B.
  • the offset range of the laying bar 3 and thus of the indicator 22 extends from position A to position C within the underlying position.
  • Sensor 25 assigned to indicator 22 is located in its starting position, which also corresponds to position A. This starting position thus corresponds to the zero offset position of the bar 3.
  • the measuring step motor 28 is now put into operation, which drives the spindle 27 due to its rotation and thus shifts the caliper 26 with the sensor 25 in the direction of offset movement, to the end of the offset range at the dash-dotted line C. In this way, the sensor runs 25 past indicator 22.
  • the sensor 25 comes to coincide with the indicator 22, the sensor 25 emitting a pulse via the line 35.
  • the measuring stepper motor 28 receives 19 pulses for its rotation from the control unit, which are simultaneously fed to the counter 36. Each pulse corresponds to the effect of the measuring step motor, a specific step from it and thus a corresponding longitudinal displacement of the sensor 25.
  • the pulses or steps of the measuring step motor 28, each counted by the counter are transferred to the registers via line 37 and gate circuits 38, 39, 40 41, 42 and 43 are supplied, register 43 being assigned to bar 3 and thus to indicator 22. The same applies to the two further registers 41 and 42.
  • gate 40 is blocked for the subsequent time, so that register 43 remains with the display of the number of steps previously traveled by measuring step motor 28.
  • the registers 41 and 42 remain at counter readings of the counter 36 which correspond to the relevant positions of the indicators 20 and 21.
  • the pattern memory 29 contains, in a known manner, the pattern to be achieved by the warp knitting machine in question, ie the pattern memory 29 emits offset pulses via its outputs 45, 46 and 47 in normal operation via lines 30, 31 and 32, which the offset step motors 16, 17 and 18 according to the respective number of offset pulses and thus move the bars 1, 2 and 3 accordingly.
  • the offset pulse numbers stored by the pattern memory 29 for each laying bar 1, 2 and 3 are now fed via lines 48, 49, 50 to the comparator 44, which compares these pulse numbers with the pulse numbers supplied by the registers 41, 42 and 43.
  • the difference determined in each case by the comparator is then fed as a sequence of pulses (correction pulse numbers) via line 30, 31 or 32 to the relevant offset step motor 16, 17 or 18, with the result that, starting from that by means of the caliper 26 with its sensors 23, 24, 25 determined position of the laying bars 1, 2 and 3 and thus the indicators 20, 21 and 22, the offset stepping motors 16, 17 and 18 each now execute such a number of steps that the laying bars 1, 2 and 3 in their intended end position for the relevant offset operation. It is thus ensured that all laying bars 1, 2 and 3 are in the offset position provided for the end of an underlay.
  • the laying bars 1, 2 and 3 are in their end position correct for the offset movement in question, but, as explained above, the warp knitting machine in question was stopped in an angular range of the main shaft 34. that corresponds to any position in the offset area. This means that normally the main shaft 34 lags behind the position of the laying bars 1, 2 and 3 that has already been assumed.
  • the slotted disk 52 which is scanned by a light-sensitive sensor 51, is arranged on the main shaft 34, which because of its rigid connection to the main shaft 34 is connected to the latter rotates and therefore generated via the slots 53 attached to it by means of the encoder 51 pulses.
  • the pulses thus emitted by the encoder 51 are fed to the pattern memory 29 as synchronization pulses.
  • a reference slot 54 is arranged on the slotted disk 52 in addition to the row of slots 53, which in each case by means of the reference transmitter 55 Reaching a certain angular position of the main shaft 34 emits a reference pulse. This reference pulse is also supplied to the control unit 19 and in this to the pattern memory 29.
  • the positions of the sensor 25 (and correspondingly also of the sensors 23 and 24) indicated by the dash-dotted lines D and E are indicated, which go beyond the range of displacement delimited by the lines A and C.
  • the area lying between the lines A and C is sufficient, which corresponds to the maximum displacement range of the laying bars 1, 2 and 3 in the underlay position.
  • the steps described above for determining and possibly correcting the position of the laying bars can advantageously also be used if a new pattern is to be knitted with the warp knitting machine in question.
  • the new pattern is entered into the pattern memory 29, unless the new pattern was already stored in it.
  • the position of the laying bars is then determined in accordance with the above-mentioned processes, the warp knitting machine in question, of course, being stopped in the underlying position.
  • the laying bars can be in any position.
  • the comparator 44 from the registers 41, 42 and 43 is supplied with the relevant pulse numbers, whereupon the offset pulse numbers determined by the new pattern are taken from the pattern memory 29 and likewise entered into the comparator 44.
  • the laying bars Based on the comparison subsequently carried out in the manner described above, the laying bars can then be shifted into their end position determined by the new pattern in the relevant underlay position.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
EP88908663A 1987-10-08 1988-10-06 Kettenwirkmaschine mit mittels versatzschrittmotoren verstellbaren legebarren Expired - Lifetime EP0334930B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873734072 DE3734072A1 (de) 1987-10-08 1987-10-08 Kettenwirkmaschine mit mittels versatzschrittmotoren verstellbaren legebarren
DE3734072 1987-10-08

Publications (2)

Publication Number Publication Date
EP0334930A1 EP0334930A1 (de) 1989-10-04
EP0334930B1 true EP0334930B1 (de) 1992-08-12

Family

ID=6337910

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88908663A Expired - Lifetime EP0334930B1 (de) 1987-10-08 1988-10-06 Kettenwirkmaschine mit mittels versatzschrittmotoren verstellbaren legebarren

Country Status (7)

Country Link
US (1) US4989423A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
EP (1) EP0334930B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP (1) JPH02502297A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
KR (1) KR940010044B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
CN (1) CN1014809B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE3734072A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
WO (1) WO1989003443A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

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DE4127344A1 (de) * 1991-08-19 1993-02-25 Mayer Textilmaschf Kettenwirkmaschine mit mindestens einer legebarre
TW207555B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1991-09-16 1993-06-11 Zorini Luigi Omodeo
DE4215691C2 (de) * 1992-05-13 1996-07-25 Mayer Textilmaschf Kettenwirkmaschine
DE4411528C2 (de) * 1994-04-02 1997-06-26 Mayer Textilmaschf Kettenwirkmaschine
DE69608369T2 (de) * 1995-01-19 2001-02-01 Nippon Mayer Co., Ltd. Mustervorrichtung für kettenstrickmaschinen und verfahren dazu
JPH10168719A (ja) * 1996-12-12 1998-06-23 Nippon Mayer Ltd 経編機における編成要素の運動制御装置とその制御方法
DE19821845C2 (de) * 1998-05-15 2000-05-04 Mayer Textilmaschf Vorrichtung an Kettenwirkmaschinen zum Positionieren eines Fadenführers
ITMI20010069A1 (it) * 2001-01-16 2002-07-16 Corrado Pedroni Gruppo di comando per l'azionamento di telai raschel multibarre
DE10137601B4 (de) * 2001-08-01 2006-09-07 Karl Mayer Textilmaschinenfabrik Gmbh Kettenwirkmaschine mit mindestens einer Musterlegebarre
DE10321331B4 (de) 2003-05-13 2009-01-02 Karl Mayer Textilmaschinenfabrik Gmbh Wirkmaschine
DE10342843B4 (de) * 2003-09-17 2005-09-15 Karl Mayer Textilmaschinenfabrik Gmbh Verfahren zur Inbetriebnahme einer Kettenwirkmaschine
EP1520922B1 (en) * 2003-09-30 2008-11-19 Luigi Omodeo Zorini Textile machine and control method thereof
ATE308634T1 (de) * 2003-10-21 2005-11-15 Luigi Omodeo Zorini Steuerungsvorrichtung für textilmaschinen, insbesondere für häkelmaschinen
DE102004031268A1 (de) * 2004-06-29 2006-02-02 Karl Mayer Textilmaschinenfabrik Gmbh Legebarrenantrieb in einer Wirkmaschine
US20080253911A1 (en) * 2007-02-27 2008-10-16 Deka Products Limited Partnership Pumping Cassette
KR100980705B1 (ko) * 2010-01-20 2010-09-07 박승헌 랏셀 경편기의 가이드바 구동장치
CN106048879A (zh) * 2016-07-19 2016-10-26 柳州六品科技有限公司 一种用于经编机的控制系统
CN108193374B (zh) * 2017-12-05 2019-05-24 武汉纺织大学 一种针前针背双横移传动装置

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Also Published As

Publication number Publication date
WO1989003443A1 (en) 1989-04-20
CN1014809B (zh) 1991-11-20
DE3734072C2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1990-07-12
US4989423A (en) 1991-02-05
KR940010044B1 (ko) 1994-10-21
EP0334930A1 (de) 1989-10-04
KR890701819A (ko) 1989-12-21
CN1032558A (zh) 1989-04-26
JPH02502297A (ja) 1990-07-26
DE3734072A1 (de) 1989-04-27

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