EP4170082A1 - Dispositif pour introduire une bande de matériau en mouvement dans une machine à ramener - Google Patents

Dispositif pour introduire une bande de matériau en mouvement dans une machine à ramener Download PDF

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Publication number
EP4170082A1
EP4170082A1 EP22000238.0A EP22000238A EP4170082A1 EP 4170082 A1 EP4170082 A1 EP 4170082A1 EP 22000238 A EP22000238 A EP 22000238A EP 4170082 A1 EP4170082 A1 EP 4170082A1
Authority
EP
European Patent Office
Prior art keywords
cheek
angle
actuator
web
output
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.)
Pending
Application number
EP22000238.0A
Other languages
German (de)
English (en)
Inventor
Josef Georg Huber
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.)
Texmag GmbH Vertriebsgesellschaft
Original Assignee
Texmag GmbH Vertriebsgesellschaft
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 Texmag GmbH Vertriebsgesellschaft filed Critical Texmag GmbH Vertriebsgesellschaft
Publication of EP4170082A1 publication Critical patent/EP4170082A1/fr
Pending legal-status Critical Current

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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
    • D06C3/00—Stretching, tentering or spreading textile fabrics; Producing elasticity in textile fabrics
    • 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
    • D06C3/00—Stretching, tentering or spreading textile fabrics; Producing elasticity in textile fabrics
    • D06C3/02—Stretching, tentering or spreading textile fabrics; Producing elasticity in textile fabrics by endless chain or like apparatus
    • D06C3/025—Driving or guiding means for stenter chains
    • D06C3/026—Detection means for controlling lateral position of the textile material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/02—Registering, tensioning, smoothing or guiding webs transversely
    • B65H23/022—Registering, tensioning, smoothing or guiding webs transversely by tentering devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/02—Registering, tensioning, smoothing or guiding webs transversely
    • B65H23/032—Controlling transverse register of web
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2402/00—Constructional details of the handling apparatus
    • B65H2402/30—Supports; Subassemblies; Mountings thereof
    • B65H2402/31—Pivoting support means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/20—Location in space
    • B65H2511/21—Angle
    • B65H2511/212—Rotary position
    • 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
    • D06C3/00—Stretching, tentering or spreading textile fabrics; Producing elasticity in textile fabrics
    • D06C3/02—Stretching, tentering or spreading textile fabrics; Producing elasticity in textile fabrics by endless chain or like apparatus
    • D06C3/028—Devices for feeding material onto or removing it from stenders

Definitions

  • the invention relates to a device for introducing a running web of material into a stenter machine, which has at least one pivotable cheek. This picks up the web and guides it into the stenter machine. The position of a web edge of the web is recorded and the swiveling cheek is aligned with the web edge of the web in such a way that it can run directly onto the cheek.
  • a controller is provided, which regulates the position of the cheek on the web edge position under the influence of an actuator.
  • To initiate the desired pivoting movement of this at least one cheek it can be pivoted with at least one actuator with at least one actuator.
  • This at least one actuator acts on the one hand on a fixed frame and on the other hand on the at least one cheek.
  • measuring means are provided for detecting a pivoting angle of the at least one cheek, in particular by to handle dangerous operating conditions of the device.
  • a generic device for introducing a running web of material into a stenter machine has two pivotable cheeks, each of which can be pivoted with an actuator by means of an actuator.
  • the actuator engages on the one hand with a pinion on a toothed rack held on a frame, while an opposite end is connected to one of the cheeks.
  • the cheeks can be adjusted in their angular position with an appropriate actuating force.
  • Limit switches are also provided on the cheeks to detect extreme cheek adjustment angles. These limit switches are operatively connected to a web guiding system.
  • One of the limit switches is used, for example, to generate an emergency stop signal in order to switch off the entire stenter machine before the cheek angle enters an impermissible range that could damage the device.
  • This device has proven itself many times in practice and forms the starting point of the present invention.
  • the invention has for its object to provide a device of the type mentioned, which is characterized by a simpler structure and a shortened installation and commissioning time, further adjustments, if necessary, simply during of the operation can be made in order to make the device more efficient overall.
  • a device is used to introduce a running web of material into a stenter machine.
  • a continuous web of material is to be understood as meaning a flat product which is transported in one direction, in particular in order to be subjected to a processing operation.
  • the running web of material can be made of any materials, with a textile web of material preferably being considered.
  • a stenter machine which is not part of the subject matter of the invention, is a machine which picks up the running web of material at its edge areas and pulls it through it. Such stenter machines have different working widths transverse to the running direction of the running web of material, which makes it necessary to introduce the running web of material into the stenter frame machine.
  • the device has at least one pivotable cheek, which picks up the web of material and feeds it to the stenter machine accordingly.
  • the material web itself can be picked up in different ways, with needles or clamps in particular being considered.
  • this list is only to be understood as an example and not exhaustive. Due to the pivotability of this cheek by means of the at least one actuator with at least one actuator achieves that the edge of the moving web can adapt to the width of the stenter machine during its run. In this way, the running web of material is fed correctly to the subsequent stenter machine.
  • the running web of material can exert a corresponding counterforce on the cheeks under certain conditions due to elastic forces, it is held in the desired position or pivoted against it by the at least one actuator with at least one actuator, which applies the corresponding actuating force for this purpose.
  • the actuator engages on the one hand on a fixed frame of the device and on the other hand on the at least one cheek in order to be able to support the elastic restoring force of the running web of material.
  • the pivoting angle of the at least one cheek is pivoted by appropriate control of the at least one actuator. It can happen that the at least one cheek gets into an impermissible pivoting angle range.
  • the device has measuring means for detecting the pivoting angle of the at least one cheek, with which the angular position of the at least one cheek is detected.
  • the measuring means measure a relative pivoting angle of the at least one cheek capture.
  • the measuring means have angle sensors, which on the one hand measure an angle between the at least one cheek and the at least one actuator and on the other hand the angle between the frame and the at least one actuator capture. Since both angle sensors each relate to the at least one actuator for angle measurement, they can be provided in the area of the at least one actuator, preferably on or within the same. Additionally provided computing means then calculate the difference between the two detected angles, which then corresponds to the cheek angle relative to the frame. In this way, the assembly and commissioning of the device is significantly reduced and simplified. Furthermore, this makes the device more compact and costs can be saved.
  • At least one of the angle sensors is preferably designed as an analog sensor. This at least one angle sensor thus has the potential possibility of detecting the respective angle with high resolution, so that different operating states of the at least one cheek can be detected and assigned without any problems.
  • At least one of the angle sensors is a digital sensor that can output more than two different angle values.
  • a digital sensor has the advantage that numerical further processing of the sensor data is possible, which in particular simplifies the structure of the computing means.
  • the at least one angle sensor can preferably output more than four different angle values in order in this way to enable sensitive angle detection that can be adapted to different operating states.
  • the calculated difference is compared with at least one first threshold value. If this is exceeded, further pivoting of the at least one cheek is prevented. This prevents the at least one cheek from being pivoted too far and being damaged as a result.
  • the difference calculated by the computing means is compared with at least a second threshold value, which, when exceeded, causes the at least one cheek to be pivoted into a position that is closer to a neutral position, so that the angle between the cheek and the Web direction reduced.
  • This is intended to prevent the at least one cheek from being pivoted further, e.g. due to a width adjustment of the stenter machine, and thereby getting into a state in which it could be damaged.
  • the difference calculated by the computing means is compared with at least a third threshold value, which, if exceeded, sends an alarm signal to the stenter machine.
  • the unusual operating states mentioned can be detected by the two angle sensors without a separate sensor being required for each individual operating state.
  • the threshold values mentioned are compared with the result of the angle measurement in order to generate corresponding signals in this way.
  • At least one comparator and/or at least one window comparator is preferably used for the comparison.
  • the device has at least one additional sensor that detects the angle between the at least one cheek on the one hand and the frame on the other hand.
  • This additional sensor allows the angle sensors together with the computing means to be counter-checked, for example to detect a failure of the angle sensors or the computing means and to react accordingly.
  • this additional sensor is used for a plausibility check, so that its recorded sensor value is not generally used to determine the operating state.
  • angle sensors together with the at least one actuator in one common housing are housed. This simplifies in particular the structure of the device. Finally, what is achieved by this measure is that the entire device becomes less sensitive to interference, since long wired lines outside the housing, through which interference signals can easily be coupled, are avoided.
  • a device 1 according to figure 1 serves to introduce a web of material 3 running in a web travel direction 2.
  • This web of material 3 is fed to a stenter machine, not shown in the figure.
  • the device 1 has a deflection roller 4 which deflects the material web 3 into the desired web travel direction 2.
  • stripping devices 5 Downstream of this deflection roller 4 are stripping devices 5 which have motor-driven thread spreading rollers 6 .
  • These thread-spreading rollers 6 are in frictional contact with the moving web 3 and, due to the rotation and a thread pitch, exert forces on the web 3 that are directed toward edges 7 and strip these edge regions. In this way it is achieved that the material web 3 is essentially smooth and does not have any rolled-up edges. This is particularly important for knitwear, which generally has a tendency to curl in the edge areas.
  • chains 8 which are guided around deflection rollers 9. Contrary to what is shown, these chains can figure 1 be arranged not only horizontally but also vertically. In addition, it is also conceivable to arrange the chains 8 in a plane arranged at an angle to the horizontal plane. Of these deflection rollers 9, only the inlet-side pair is shown.
  • the chains 8 are endless and are driven by a motor in such a way that their speed corresponds to the web running speed of the moving web 3 .
  • the chains 8 have clamping tongs 10 which frictionally and/or form-fittingly grip the moving material web 3 between their clamping jaws 11 .
  • the chains 8 could also be equipped with needles.
  • the moving web 3 in its movement in the respective areas synchronized their edges 7 with the movement of the chains 8.
  • the chains 8 are held on pivoted cheeks 12 so that the edges 7 of the running web of material 3 run onto the chains 8 exactly. In this way, a positional guidance of the moving web 3 is achieved, which is important for the subsequent stenter machine.
  • the position of the cheeks 12 is regulated in such a way that the respective edge 7 of the material web 3 is aligned with the chain 8 .
  • Edge sensors 52 are provided for this purpose, which detect the edge position of the material web 3 and feed it to a controller (not shown). These edge sensors 52 are firmly connected to the cheeks 12 so that they detect the edge 7 of the web 3 relative to the cheek position. The edge sensors 52 thus directly indicate an infeed error of the edge 7 relative to the cheeks 12 . This feed error is corrected by the controller to the target value 0 in order to achieve an optimal and, in particular, distortion-free feed of the material web 2 to the cheeks 12 in the settled control state.
  • an actuator 13 is provided, which is pivotally supported on the respective cheek 12 via a pivot bearing 14 and is pivotably supported on a frame 17 via a pivot bearing.
  • an actuator is provided, the pinion 15 with a Rack 16 meshes, which is attached to the machine-fixed frame 17.
  • the pinion 15 rolls along the toothed rack 16, as a result of which a pinion shaft is displaced transversely to the direction of web travel 2.
  • the specific structure of the actuator 13 is based on the figures 2 and 3 explained in more detail.
  • the actuator 13 has a housing 18 on which the pivot bearing 14 is held for support on the cheek 12 .
  • an actuator 19 is provided in the actuator 13, which via a gear 20 in the figure 4 shown pinion 15 drives.
  • pinion 15 drives.
  • a lock 21 formed by ball bearings 22 .
  • This lock 21 forms an abutment for the actuator 13, which engages behind the frame 17 and in this way ensures that the pinion 15 meshes correctly with the rack 16.
  • the ball bearings 22 or the lock 21 can be designed as such to be self-adjusting in order to keep the abutment formed without play.
  • the pinion 15 and lock 21 are supported on a pivotable plate 23 which maintains axes 24 of the pinion 15 and ball bearings 22 in relative alignment. Due to the geometric arrangement of the pinion 15 and the lock 21, the plate 23 follows the frame 17 exactly, regardless of which angular position the actuator 13 assumes.
  • Magnetic strips 30 are arranged on the pivot bearing 14 and on the plate 23 and interact with magnetic sensors 31 which are fixedly connected to the housing 18 of the actuator 13 and together form angle sensors 32 .
  • optical sensors can also be used.
  • the magnetic strips 30 have alternating polarity, so that when the actuator 13 is pivoted, the magnetic sensors 31 deliver an AC voltage signal from which the current angular position can be determined by counting the zero crossings.
  • the magnetic strips 30 and/or the magnetic sensors 31 are doubled, so that the direction of rotation can also be determined based on the phase position of the zero crossing.
  • Hall sensors are preferably used as magnetic sensors 31 .
  • the signals from the magnetic sensors 31 are fed via signal paths 43 to an evaluation unit 40, which is also located inside the housing 18 of the actuator 13 and in figure 2 can be seen.
  • the evaluation unit 40 is connected to the actuator 19 via a signal path 41 in order to control it.
  • the evaluation unit 40 is operatively connected via a further signal path 42 to the edge sensor 52, which generates the required position information of the running material web 3.
  • the evaluation unit 40 is based on the basic circuit diagram according to FIG figure 4 explained in more detail.
  • the edge position signal from the edge sensor 52 is sent to a controller via the signal path 42 50, preferably with PID behavior supplied.
  • the controller 50 supplies a correction signal at its output 53, by means of which the actuator 19 is controlled and the cheek 12 is thus adjusted.
  • An adder 54 is provided between the controller 50 and the actuator 19 exclusively for the purpose of increasing operational reliability, which can subtract a constant but adjustable value from the output signal of the controller 50 .
  • the adder 54 receives a zero signal at its non-inverting input 55, so that the entire adder 54 is ineffective in this operating condition and the signal at the output 53 of the controller 50 remains unchanged via the signal path 41 the actuator 19 is passed on.
  • the magnetic sensors 31 are operatively connected to a phase detector 61 via signal amplifiers 60 .
  • This phase detector 61 detects zero crossings at its inputs 62 including the phase position of these zero crossings.
  • a clock signal is output either at its plus output 63 or at its minus output 64 .
  • the plus output 63 and the minus output 64 are connected to an up-down counter 65. This up/down counter 65 only counts the edges of the plus output 63 upwards and of the minus output 64 downwards, so that its count is proportional to the angle actually present.
  • the circuit parts described, from the magnetic sensors 31 to the up/down counter 65, are duplicated in order to detect the angle of rotation of the pivot bearing 14 on the one hand and the angle of rotation of the pivotable plate 23 on the other. These are basically identical in structure and are therefore not described in detail.
  • the outputs of both up-down counters are fed to a summer 66, which detects the difference between the two counter readings and forms arithmetic means 66'. This differential angle corresponds to the actual cheek angle except for an additive correction variable, which is not important in the following.
  • An output 67 of the adder 66 is compared with threshold values of threshold generators 71, 72, 73 via comparators 68, 69, 70.
  • the threshold generators 71, 72, 73 can be potentiometers which output analog voltages.
  • the comparison is such that an active signal is output when the value at the output 67 is greater than the respective threshold value. In this way, critical operating states of the cheek 12 are detected.
  • the normal operating state is present, so that the regulation via the controller 50 can work by any adjustment of the cheek 12.
  • a zero value is supplied to the adder 54, so that the signal from the controller at its output 53 is supplied unchanged to the actuator 19 via the signal path 41.
  • the comparator 68 transmits a signal to the controller 50, by which the output value of the controller 50 is held. If control deviations now occur, which reach the controller 50 via the signal path 42, the latter will no longer react to these control deviations and thus will not adjust the cheek 12 any further via the actuator 19 either. This influence takes place in such a way that the controller 50 can adjust the cheek 12 in the direction of its neutral position, which is parallel to the direction of web travel 2, but not in the opposite direction. In this way it is avoided that the cheek 12, the web 3 or the following stenter machine are damaged by pivoting the cheek 12 too far.
  • the controller 50 will reduce its signal at the output 53, as a result of which the limiting effect of the comparator 68 is canceled.
  • the evaluation unit 40 therefore automatically returns to the normal operating state in the event of self-eliminating faults.
  • the second comparator 69 is provided for this purpose and compares the signal at the output 67 with a somewhat higher threshold value.
  • This comparator 69 emits a signal at its output 75 which is zero in the normal but inactive state, but supplies a value which can be predetermined by a transmitter 56 to the adder 54 when the threshold value of the threshold value transmitter 72 is exceeded. In this way, the output signal of controller 50 is reduced by this predetermined value, so that cheek 12 is forcibly pivoted back by this value in the direction of the neutral position.
  • the transmitter 56 can be implemented like the threshold transmitters 71, 72, 73 or else differently.
  • the signal at the output 67 of the adder 66 is compared with a third threshold value in the comparator 70, which then sends a high-priority signal via the output 75 to the downstream stenter machine when this threshold value is exceeded, causing it to switch off. This state can only be canceled with reset 74.
  • the entire evaluation unit 40 or parts thereof is preferably implemented in the form of a microcontroller. This simplifies the structure of the evaluation unit 40.
  • FIG 4 are signal paths, which are to be formed with multiple bits, shown with a thicker line width.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Treatment Of Fiber Materials (AREA)
EP22000238.0A 2021-10-25 2022-10-19 Dispositif pour introduire une bande de matériau en mouvement dans une machine à ramener Pending EP4170082A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102021005293.5A DE102021005293A1 (de) 2021-10-25 2021-10-25 Vorrichtung zum Einführen einer laufenden Warenbahn in eine Spannrahmenmaschine

Publications (1)

Publication Number Publication Date
EP4170082A1 true EP4170082A1 (fr) 2023-04-26

Family

ID=84331938

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22000238.0A Pending EP4170082A1 (fr) 2021-10-25 2022-10-19 Dispositif pour introduire une bande de matériau en mouvement dans une machine à ramener

Country Status (5)

Country Link
US (1) US20230129064A1 (fr)
EP (1) EP4170082A1 (fr)
KR (1) KR20230059145A (fr)
CN (1) CN116024767A (fr)
DE (1) DE102021005293A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE901165C (de) * 1952-04-24 1954-01-07 Manfred Erhardt & Co Elektrisches Steuergeraet fuer die Steuerung der Einlasskettenwaende an Spannrahmen
JPH0219562A (ja) * 1988-07-04 1990-01-23 Kyoto Kikai Kk ピンテンタのレール幅調整装置
DE202010014335U1 (de) 2010-10-14 2010-12-16 Texmag Gmbh Vertriebsgesellschaft Regelsystem zum Einführen einer Materialbahn in eine Spannrahmenmaschine

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US408758A (en) * 1889-08-13 Island
US1163565A (en) * 1915-07-02 1915-12-07 Ludwig H A Schwartz Automatic web-handling apparatus.
DE1413778B2 (de) * 1961-02-22 1970-04-30 Erhardt & Leimer KG, 89OO Augsburg Vorrichtung zum Steuern und Regeln eines Elektromotors in Abhängigkeit von der Kantenabweichung einer Warenbahn
US3150431A (en) * 1961-05-19 1964-09-29 Farberei Und Appretur Schuster Apparatus for displacing the chain walls of tenter frames
DE1635188B1 (de) * 1966-05-18 1972-03-09 Famatex Gmbh Fühlgliedvorrichtung zur Regelung der Einlasswangen eines Spannrahmens
US3943612A (en) 1975-06-27 1976-03-16 Barbara Cox Campbell Drive apparatus for tenter frames
DE3305893A1 (de) * 1983-02-19 1984-08-30 Erhardt & Leimer Kg, 8900 Augsburg Spannvorrichtung
DE3417030A1 (de) * 1984-05-09 1985-11-14 A. Monforts GmbH & Co, 4050 Mönchengladbach Spannmaschine
US4817254A (en) * 1986-04-24 1989-04-04 Poterala Robert J Tenter entry feed system and method
DE19609928C2 (de) * 1996-03-14 1998-02-26 Monforts Textilmaschinen Gmbh Spannmaschine für eine textile Warenbahn
JP5782197B2 (ja) 2011-12-15 2015-09-24 スリーエム イノベイティブ プロパティズ カンパニー 移動ウェブを導くための装置
CN204676306U (zh) * 2015-05-15 2015-09-30 浙江凯瑞博科技股份有限公司 一种拉幅定型机
ITUB20153571A1 (it) * 2015-09-11 2017-03-11 Unitech Textile Machinery S P A Dispositivo di ricerca e guida dei bordi di un tessuto
DE202020001243U1 (de) 2020-03-31 2021-07-01 Texmag Gmbh Vertriebsgesellschaft Vorrichtung zum Regeln des Bahnlaufs einer laufenden Warenbahn

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE901165C (de) * 1952-04-24 1954-01-07 Manfred Erhardt & Co Elektrisches Steuergeraet fuer die Steuerung der Einlasskettenwaende an Spannrahmen
JPH0219562A (ja) * 1988-07-04 1990-01-23 Kyoto Kikai Kk ピンテンタのレール幅調整装置
DE202010014335U1 (de) 2010-10-14 2010-12-16 Texmag Gmbh Vertriebsgesellschaft Regelsystem zum Einführen einer Materialbahn in eine Spannrahmenmaschine

Also Published As

Publication number Publication date
US20230129064A1 (en) 2023-04-27
CN116024767A (zh) 2023-04-28
DE102021005293A1 (de) 2023-04-27
KR20230059145A (ko) 2023-05-03

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