EP3038964A1 - Verfahren zum erkennen eines fadenwickels und vorrichtung zum führen eines fadens - Google Patents
Verfahren zum erkennen eines fadenwickels und vorrichtung zum führen eines fadensInfo
- Publication number
- EP3038964A1 EP3038964A1 EP14755621.1A EP14755621A EP3038964A1 EP 3038964 A1 EP3038964 A1 EP 3038964A1 EP 14755621 A EP14755621 A EP 14755621A EP 3038964 A1 EP3038964 A1 EP 3038964A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- electric motor
- thread
- motor
- delivery device
- godet jacket
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H51/00—Forwarding filamentary material
- B65H51/02—Rotary devices, e.g. with helical forwarding surfaces
- B65H51/04—Rollers, pulleys, capstans, or intermeshing rotary elements
- B65H51/08—Rollers, pulleys, capstans, or intermeshing rotary elements arranged to operate in groups or in co-operation with other elements
- B65H51/12—Rollers, pulleys, capstans, or intermeshing rotary elements arranged to operate in groups or in co-operation with other elements in spaced relation to provide a series of independent forwarding surfaces around which material is passed or wound
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H51/00—Forwarding filamentary material
- B65H51/32—Supporting or driving arrangements for forwarding 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
- B65H63/00—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package
- B65H63/003—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to winding of yarns around rotating cylinders
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
- D02J1/00—Modifying the structure or properties resulting from a particular structure; Modifying, retaining, or restoring the physical form or cross-sectional shape, e.g. by use of dies or squeeze rollers
- D02J1/22—Stretching or tensioning, shrinking or relaxing, e.g. by use of overfeed and underfeed apparatus, or preventing stretch
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
- D02J13/00—Heating or cooling the yarn, thread, cord, rope, or the like, not specific to any one of the processes provided for in this subclass
- D02J13/005—Heating or cooling the yarn, thread, cord, rope, or the like, not specific to any one of the processes provided for in this subclass by contact with at least one rotating roll
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/30—Handled filamentary material
- B65H2701/31—Textiles threads or artificial strands of filaments
Definitions
- the invention relates to a method for detecting a thread winding on the circumference of a driven godet casing according to the preamble of claim 1 and to a delivery device for guiding a thread according to the preamble of claim 9.
- the circumference of the godet casing is detected by a winding sensor, which is converted by mechanical contact with a thread winding in a switching position. Within the switching position, the winding sensor causes a direct interruption of the voltage supply of the electric motor, so that the godet casing is stopped.
- the known method and the known delivery device thus require additional tools to recognize on the one hand a filament winding and on the other hand to effect a shutdown of the godet shell.
- the prior art also discloses similar methods for monitoring unwanted filament winding on a roll.
- DE 10 2007 026 631 A1 describes a method and a device in which a friction roller for driving a thread winding in a winding device is monitored.
- the roller is assigned a limiting means at a distance on the circumference, which generates a stiffness and thus a braking torque in the case of a thread winding on the circumference of the roller.
- This impressed braking torque counteracts the drive torque of a motor of the friction roller, which is evaluated in a connected control unit to detect a thread winding.
- the additional tools needed to detect the thread formed on the circumference of the friction roller are also known.
- This object is achieved by a method according to claim 1 and with a delivery device according to claim 9.
- the invention is based on the recognition that the delivery devices used to guide a thread used in a textile machine each have a separate electric motor with a relatively low and therefore sensitive power spectrum.
- the thread guide on the godet casing decisively determines the power output of the electric motor.
- changes in the thread guide can already cause minor changes in power loss on the electric motor.
- the invention now provides that at least one physical operating parameter of the electric motor is continuously monitored, wherein an instantaneous actual value of the operating parameter is compared with a stored threshold value of the operating parameter.
- the threshold the operating parameter forms the unique identifier of a thread winding formed on the circumference of the godet casing.
- the development of the method according to the invention turns out to be particularly advantageous, in which an operating torque of the electric motor is monitored as a physical operating parameter.
- the actual values of the operating torque can be seen directly proportional to the yarn tension forces acting on the godet casing.
- the actual value of the operating torque is determined from measured values of at least one engine parameter, in particular a motor current. It is known that power changes in the output of the power directly affect the motor current. In that regard, the measurement of the motor current for determining the actual values of the operating torque is particularly advantageous.
- the power output of the electric motor can advantageously be influenced by a further development of the method in that nes acting on the godet roller braking torque acts a friction surface, which is formed at a distance from the godet casing by a stationary friction means.
- nes acting on the godet roller braking torque acts a friction surface, which is formed at a distance from the godet casing by a stationary friction means.
- the method variant is preferably carried out, which generates an interference signal at an inadmissible undershooting or exceeding the threshold value of the operating parameter and the electric motor switches off automatically.
- a direct stop of the godet mantle is triggered and, moreover, an operator can receive corresponding information via the interference signal.
- the development of the method according to the invention is particularly advantageous, in which the electric motor for driving the godet cover is controlled in several operating modes, the modes being assigned separate monitoring algorithms with separate threshold presets.
- different operating parameters or different threshold values or different evaluation principles can be used in order to be able to trigger the most appropriate possible sequences of actions.
- one of the operating modes is determined in particular for controlling the electric motor when applying a thread to the godet casing. This condition occurs at a process start and after each process interruption. In these cases, a thread is usually applied manually by the operator in the delivery device, so that unintentional changes in the operating torque of the electric motor can occur.
- the associated monitoring algorithm assigns the threshold value a time constant which determines a time duration of the overshoot.
- a second mode of operation can thus be used to control the electric motor when guiding a thread on the circumference of the godet casing, wherein the associated monitoring algorithm detects any undershoot or overshoot of the threshold value.
- the inventive method is thus particularly suitable to be integrated into the drive of a godet shell.
- the delivery device is for this purpose designed such that the electric motor is formed by a brushless synchronous motor (BLDC motor) and a control electronics, wherein the control electronics is designed to detect a thread winding formed on the godet casing.
- the control electronics coupled directly to the motor make the BLDC motors particularly suitable for detecting and evaluating a change in an operating parameter.
- the control electronics on at least one measuring means for monitoring an operating parameter of the electric motor and a memory means for storing a threshold value of the operating parameter. Such measuring means and storage means are also required to meet the electronic control of the motor according to the specifications.
- an ammeter for measuring a motor current is preferably integrated in the control electronics. In this way, directly proportional signals can be determined which allow conclusions to be drawn about operating torque.
- a friction means which opposite to the godet casing has a friction surface.
- friction means any mechanical components are suitable, which are held at a small distance to the godet casing.
- the friction means can be performed by a pin which is aligned substantially coaxially with the godet casing.
- the delivery device In order to be able to quickly trigger subsequent actions by an operator after detecting a filament winding and after switching off the electric motor, the delivery device according to the invention is provided according to an advantageous development, that the control electronics is connected to a light emitting diode and / or a machine control unit. So can be over the LED use visual signals to signal to the outside of the textile machine a fault. Alternatively or additionally, however, it is also possible to issue the fault message directly to a machine control unit in order to be able to control corresponding adjacent process units and delivery devices.
- the delivery device according to the invention is particularly suitable for being operated in a compact arrangement even in loaded environments.
- the control electronics, the electric motor and the godet casing form a unit, wherein the motor shaft is cantilevered in a bearing housing, wherein the control electronics is encapsulated in an electrical housing and wherein a motor carrier for Holding a stator between the bearing housings and the electrical housing is held.
- a motor carrier for Holding a stator between the bearing housings and the electrical housing is held.
- the delivery device provides a high degree of operational reliability, since unwanted filament winding of the electric motor automatically detected and lead to shutdown. Additional tools that perform a detection of the thread winding, are not required.
- FIG. 1 is a schematic cross-sectional view of an embodiment of the delivery device according to the invention
- Fig. 2 shows schematically a side view of the embodiment of Fig. 1 in different operating situations in a textile machine
- Fig. 3 shows schematically a representation of a time course of an operating parameter of the electric motor
- FIG. 1 an embodiment of the delivery device according to the invention is shown in a cross-sectional view.
- the delivery device has a cup-shaped godet casing 1, which is non-rotatably attached to a cantilevered free end of a motor shaft 3 of an electric motor 2.
- the electric motor 2 is designed as a brushless synchronous motor, which also as so-called BLDC motor is known.
- the BLDC motor 4 comprises the electric motor 2 and control electronics 5.
- the BLDC motor 4 is designed in several parts in this embodiment.
- the motor shaft 3 of the electric motor 2 is rotatably supported by a plurality of roller bearings 9 in a bearing housing 8.
- the motor shaft 3 has an opposite to the godet casing 1 end on which a rotor 10 is arranged.
- the rotor 10 is formed by a permanent magent not described here.
- the rotor 10 is surrounded by a stator 11 which carries a plurality of windings.
- the stator 11 is held by a motor carrier 12.
- the motor mount 12 extends between the bearing housing 8 and an electric housing 13 arranged directly on the electric motor 2.
- the electrical housing 13 contains the control electronics 5.
- the control electronics 5 is symbolically in this embodiment by a circuit board 14 and a power module 15, an inverter 17 and a Microprocessor 19 shown.
- the control electronics 5 a measuring means 16, which is usually associated with the inverter 17.
- a memory means 18 is provided, which is coupled to the microprocessor 19.
- the control electronics 5 is coupled via a supply line 21 with a voltage source, not shown here.
- a second connection to the control electronics 5 represents a data line 20, which allows a data exchange with a higher-level machine control unit 22.
- the control electronics 5 directly with a Light emitting diode 23 coupled to indicate possible operating states of the electric motor 2 by visual signals can. For example, a fault can be signaled by a green signal on the light-emitting diode 23 due to a red signal and a normal operating state.
- FIGS. 2.1 and 2.2 each show a view of the embodiment from FIG. 1 when used in a textile machine.
- FIG. 2.1 shows the delivery device in operation with a thread guide
- FIG. 2.2 shows the delivery device in operation with formation of a thread winding.
- the delivery device according to FIG. 1 is held on a carrier 27.
- the godet casing 1 is held on a front side of the carrier 27 and the BLDC motor 4 is held on a rear side of the carrier 27.
- the godet 1 is assigned at a distance a rotatably mounted roller 28.
- a friction means 24 is attached to the front of the carrier 27, which is held with a friction surface 26 at a small distance to godet casing 1.
- the friction means 24 is formed in this embodiment by a pin 25 which is aligned coaxially with the godet casing 1 and extends substantially over the entire length of the godet casing 1.
- Fig. 2.1 the situation is shown, in which a yarn 29 is guided with several wraps on the circumference of the godet casing 1 and on the circumference of the roller 28.
- the godet 1 is in this situation driven by the electric motor 2 at a substantially constant speed.
- the control of the electric motor 2 via the control electronics 5, wherein the target speed of the control electronics 5 is placed over the data input.
- the method according to the invention is based on the fact that in this phase a physical operating parameter of the electric motor 2 within the control electronics 5 is continuously monitored. For this purpose, an actual value of the operating parameter is compared with a stored threshold value of the operating parameter. As an operating parameter, preferably the operating torque of the electric motor 2 is detected. Basically, however, it is also possible to monitor the performance of the engine as an operating parameter.
- FIG. 3 shows in a diagram the course of an actual value of the operating torque of the electric motor 2 in a time profile. The time t is plotted on the abscissa and the operating torque M of the motor is plotted on the ordinate of the graph.
- the actual value of the operating torque remains essentially constant except for a few small fluctuations.
- the actual value is identified in FIG. 3 by the reference symbol Mj. Since, during the monitoring of the operating torque of the electric motor 2, the threshold value represents a maximum torque load of the electric motor, the threshold value is to be regarded as the upper limit value and in FIG. marked M s .
- the threshold value M s forms a parallel to the abscissa and is constant.
- FIG. 2.2 shows a situation in which a thread winding 30 on the circumference of the godet casing 1 adjusts itself by winding up a tapering thread 29.
- the filament winding 30 could alternatively be formed by an already expired thread, so that a returning thread to the thread winding 30 is guided.
- a motor current is measured as a motor characteristic in this embodiment.
- the measuring means 16 within the control electronics 5.
- other engine characteristics such as the motor voltage can be used to operating parameters of the electric motor 2 to determine.
- the actual value of the operating torque is continuously compared with a threshold value of the operating torque.
- the threshold is stored in the storage means 18 of the S expensive electronics 5.
- the actual value Mi of the operating torque increases in the case of winding formation and exceeds the threshold value M s at the time ⁇ . After adjustment of the actual value with the threshold value and the determination of the excess at time ⁇ causes the control electronics 5, the electric motor 2 stops immediately.
- the machine control unit 22 is transmitted an interference signal, so that the failure can be displayed to an operator.
- the signal is gain the godet 1, the friction medium 24 with a friction surface 26 assigned such that after an increase of the thread winding of this on the friction surface 26 of the friction means 24 drags.
- This frictional contact between the filament winding 30 and the stationary friction means 24 is transmitted directly to the electric motor 2 and leads to a disproportionate increase in the actual value of the operating torque.
- an increase of the thread winding 30 can advantageously be limited if the change in the operating torque due to the thread winding is insufficient.
- the thread is threaded again by an operator and applied to the circumference of the godet casing 1 and the roller 28.
- the operator unintentionally generates higher loads on the godet casing 1, which lead to an undesired elevation of the operating torque of the electric motor 2.
- an immediate shutdown and shutdown of the electric motor is not desired. It is therefore intended to carry out the monitoring of the operating torque in the various operating modes according to different monitoring algorithms.
- Each mode is assigned to one of several monitoring algorithms, which are usually stored in the microprocessor 19 of the control electronics 5.
- FIG. 4 shows the profile of an actual value of the operating torque of the electric motor 2 during a plurality of operating modes.
- the time t is plotted on the abscissa and the operating torque M on the ordinate.
- the actual value of the operating torque Mi will increase continuously until a desired operating torque for guiding the yarn is reached.
- the operator causes a disproportionate increase in the operating torque on the electric motor 2 during the application of the thread.
- the actual value of the operating torque continuously determined via the motor current measurement becomes a threshold value M S2 compared.
- the threshold value M S2 represents a maximum load on the electric motor 2. As soon as this load limit of the electric motor is reached, the speed for reducing the operating torque is lowered via the control electronics 5. Regardless of the speed change, the monitoring of the operating torque takes place. In addition to the actual value of the operating torque, a period of overshoot is determined in this phase. In the course shown in Fig. 4, the excess at time t 2 is completed. The time duration results from the difference of the times t 2 - The time difference determined therefrom likewise forms a monitoring criterion. In the event that the excess exceeds a predetermined period of time takes place via the control electronics 5 a shutdown of the electric motor 2.
- the time difference was smaller than the predetermined critical time, so that in the embodiment shown in Fig. 4, the electric motor 2 was not turned off.
- the function of thread detection is tuned to the needs of manual threading.
- the method according to the invention is thus particularly suitable for manually operated delivery devices. As soon as the application process on the delivery device has ended and the actual value of the operating parameter reaches its normal value, which determines the operating state for guiding a yarn, the operating mode of the control of the electric motor is changed and the monitoring algorithm previously described according to FIG. 3 is activated , The monitoring algorithm already shown and described with reference to FIG. 3 is shown again in FIG. Thus, the threshold value M S1 is smaller than the relevant threshold for the application of the thread M S2 .
- the threshold value M S1 is selected in such a way that the load fluctuations of the electric motor 2 occurring during a thread guide generate respective actual values of the operating parameter which are below the threshold value. Only in the event that a larger change in the actual value of the operating parameter occurs due to a thread winding, the threshold value can be exceeded. In Fig. 4, this situation is shown at time t 3 . At time t 3 is a thread winding on the periphery of the godet roll 1 and the electric motor 2 is stopped again.
- the method according to the invention and the delivery device according to the invention are directly related in order to ensure a secure thread guidance within a processing station within a textile machine.
- the invention is particularly suitable to perform thread guides in textile machines with simultaneous filament winding monitoring. LIST OF REFERENCE NUMBERS
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Quality & Reliability (AREA)
- Guides For Winding Or Rewinding, Or Guides For Filamentary Materials (AREA)
- Filamentary Materials, Packages, And Safety Devices Therefor (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
- Spinning Or Twisting Of Yarns (AREA)
- Control Of Electric Motors In General (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102013014557 | 2013-08-31 | ||
| PCT/EP2014/067348 WO2015028309A1 (de) | 2013-08-31 | 2014-08-13 | Verfahren zum erkennen eines fadenwickels und vorrichtung zum führen eines fadens |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3038964A1 true EP3038964A1 (de) | 2016-07-06 |
| EP3038964B1 EP3038964B1 (de) | 2020-07-08 |
Family
ID=51399627
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP14755621.1A Active EP3038964B1 (de) | 2013-08-31 | 2014-08-13 | Verfahren zum erkennen eines fadenwickels und vorrichtung zum führen eines fadens |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP3038964B1 (de) |
| JP (1) | JP6556134B2 (de) |
| CN (1) | CN105517930B (de) |
| WO (1) | WO2015028309A1 (de) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3153609B1 (de) * | 2015-10-05 | 2021-11-10 | Hanning Elektro-Werke GmbH & Co. KG | Antriebsanordnung für eine textilmaschine |
| WO2017080899A1 (de) * | 2015-11-11 | 2017-05-18 | Oerlikon Textile Gmbh & Co. Kg | Verfahren zur qualitätsüberwachung beim texturieren und vorrichtung zum texturieren |
| CN111406032B (zh) * | 2017-11-25 | 2022-10-04 | 欧瑞康纺织有限及两合公司 | 用于监测卷绕装置的方法和卷绕装置 |
| JP7390207B2 (ja) * | 2020-02-20 | 2023-12-01 | Tmtマシナリー株式会社 | 繊維機械及び糸張力把握方法 |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07118953A (ja) * | 1993-10-20 | 1995-05-09 | Teijin Seiki Co Ltd | ローラへの糸巻付き検出装置 |
| JP2002154749A (ja) * | 2000-11-21 | 2002-05-28 | Murata Mach Ltd | 糸送りローラへの糸巻付き検出装置 |
| FR2870837A1 (fr) * | 2004-05-26 | 2005-12-02 | Rieter Textile Machinery Fr | Dispositif pour l'entrainement par friction d'un element filiforme |
| TW200804163A (en) * | 2006-05-18 | 2008-01-16 | Saurer Gmbh & Co Kg | Delivery mechanism |
| DE102007026631A1 (de) | 2007-06-06 | 2008-12-18 | Universität Rostock | Ohrimplantat und Stimulationselektrode für ein Ohrimplantat |
| DE102007062631B4 (de) * | 2007-12-22 | 2018-07-26 | Saurer Germany Gmbh & Co. Kg | Vorrichtung zur Überwachung einer unerwünschten Fadenwickelbildung in einer Textilmaschine |
-
2014
- 2014-08-13 EP EP14755621.1A patent/EP3038964B1/de active Active
- 2014-08-13 WO PCT/EP2014/067348 patent/WO2015028309A1/de not_active Ceased
- 2014-08-13 CN CN201480047255.1A patent/CN105517930B/zh active Active
- 2014-08-13 JP JP2016537210A patent/JP6556134B2/ja not_active Expired - Fee Related
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2015028309A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2015028309A1 (de) | 2015-03-05 |
| EP3038964B1 (de) | 2020-07-08 |
| CN105517930B (zh) | 2019-01-01 |
| JP6556134B2 (ja) | 2019-08-07 |
| JP2016533992A (ja) | 2016-11-04 |
| CN105517930A (zh) | 2016-04-20 |
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