EP3118553B1 - Vorrichtung und verfahren zum trocknen einer fadenschar - Google Patents

Vorrichtung und verfahren zum trocknen einer fadenschar Download PDF

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Publication number
EP3118553B1
EP3118553B1 EP15176758.9A EP15176758A EP3118553B1 EP 3118553 B1 EP3118553 B1 EP 3118553B1 EP 15176758 A EP15176758 A EP 15176758A EP 3118553 B1 EP3118553 B1 EP 3118553B1
Authority
EP
European Patent Office
Prior art keywords
drying
drying cylinder
thread
thread group
threads
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.)
Active
Application number
EP15176758.9A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3118553A1 (de
Inventor
Enzo Paoli
Stefano Aldegheri
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.)
Karl Mayer Rotal SRL
Original Assignee
Karl Mayer Rotal SRL
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 Karl Mayer Rotal SRL filed Critical Karl Mayer Rotal SRL
Priority to EP15176758.9A priority Critical patent/EP3118553B1/de
Priority to ES15176758T priority patent/ES2876185T3/es
Priority to CN201610025418.7A priority patent/CN106352684B/zh
Publication of EP3118553A1 publication Critical patent/EP3118553A1/de
Application granted granted Critical
Publication of EP3118553B1 publication Critical patent/EP3118553B1/de
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B13/00—Machines and apparatus for drying fabrics, fibres, yarns, or other materials in long lengths, with progressive movement
    • F26B13/10—Arrangements for feeding, heating or supporting materials; Controlling movement, tension or position of materials
    • F26B13/14—Rollers, drums, cylinders; Arrangement of drives, supports, bearings, cleaning
    • F26B13/18—Rollers, drums, cylinders; Arrangement of drives, supports, bearings, cleaning heated or cooled, e.g. from inside, the material being dried on the outside surface by conduction
    • F26B13/183—Arrangements for heating, cooling, condensate removal
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B13/00—Machines and apparatus for drying fabrics, fibres, yarns, or other materials in long lengths, with progressive movement
    • F26B13/10—Arrangements for feeding, heating or supporting materials; Controlling movement, tension or position of materials
    • F26B13/14—Rollers, drums, cylinders; Arrangement of drives, supports, bearings, cleaning
    • F26B13/18—Rollers, drums, cylinders; Arrangement of drives, supports, bearings, cleaning heated or cooled, e.g. from inside, the material being dried on the outside surface by conduction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B13/00—Machines and apparatus for drying fabrics, fibres, yarns, or other materials in long lengths, with progressive movement
    • F26B13/001—Drying and oxidising yarns, ribbons or the like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B13/00—Machines and apparatus for drying fabrics, fibres, yarns, or other materials in long lengths, with progressive movement
    • F26B13/10—Arrangements for feeding, heating or supporting materials; Controlling movement, tension or position of materials
    • F26B13/14—Rollers, drums, cylinders; Arrangement of drives, supports, bearings, cleaning
    • F26B13/145—Rollers, drums, cylinders; Arrangement of drives, supports, bearings, cleaning on the non-perforated outside surface of which the material is being dried by convection or radiation

Definitions

  • the invention relates to a device for drying a sheet of threads according to the preamble of claim 1.
  • the invention also relates to a method for drying a sheet of threads according to the preamble of claim 6.
  • the threads of a group of threads Before further processing into a textile fabric, the threads of a group of threads usually have to be pretreated.
  • An example of one Such pretreatment is the so-called sizing, in which a size is applied to the threads. The size is often applied to the threads with the help of an aqueous solution, so that the thread sheet has to be dried before further processing.
  • a drying cylinder has a circumferential surface that is heated. When the thread sheet rests on this surface, it is heated so that the moisture previously introduced in a process step, for example when applying a size, can evaporate.
  • DE 199 56 752 A1 describes a device for the production and / or finishing of a fibrous web, in particular a paper, cardboard or tissue web.
  • a fibrous web in particular a paper, cardboard or tissue web.
  • Such webs consist of fibers that have a certain cohesion in all directions, that is, in the running direction of the web and also transversely to the running direction.
  • the cohesion of the fibers is not yet sufficient to allow a train to act on the web. Accordingly, the web is transferred to felts or fabrics and, with these felts or fabrics, is guided by presses or around drying cylinders.
  • DE 17 29 422 A1 shows a device for driving drying cylinders which are used for drying threads.
  • This device has drying cylinders, a thread sheet path between an inlet and an outlet looping around the drying cylinder over part of its circumference.
  • EP 0 437 755 A1 shows a device for drying a thread sheet.
  • the thread sheet is first divided into two part thread sheets. Each thread sheet is first passed through a trough and then through a crushing mechanism and wet dividing rods. Each thread sheet is subdivided once again in the wet dividing rods and then passed over the drying cylinder.
  • DE 101 00 330 A1 shows a method and a device for drying a thread sheet.
  • the thread sheet is first passed through a contact dryer with several drying cylinders and then through a convection dryer. At least one of the drying cylinders can be driven via a drive system.
  • DE 10 2011 005 101 A1 describes a textile treatment machine and a method for drying textile structures.
  • a textile structure is passed over two drying cylinders, the drying cylinders being wrapped in a hood.
  • DE 10 208 030 340 A1 describes a drying device of a paper machine, in which speed relationships between drive groups are determined. For this purpose, measured values, in particular speeds of the working groups, a mass per unit area of the paper web, moisture measurements after the last drying cylinder of the pre-dryer section and / or steam pressures in the drying cylinder are provided and web moisture is determined thereon, a web elongation being calculated from a moisture-dependent modulus of elasticity and a predefinable target web tension and the speed relationships between the drive groups are calculated from the web elongation.
  • the invention is based on the object of keeping the load on the threads during drying small.
  • the control device preferably controls the rotary drive of a drying cylinder which is arranged closer to the exit at a different speed than the rotary drive of a drying cylinder which is further away from the exit.
  • the speed of the drying cylinder closer to the exit may be higher than the speed of the drying cylinder further away from the exit. This takes account of the fact that the threads of the thread sheet stretch when they are guided over the drying cylinder. If the filaments stretch, a greater length of filament must be removed after the stretching at a constant feed speed. This can be achieved in a simple manner by driving a drying cylinder, which the sheet of threads later encounters, at a higher rotational speed than a previously arranged drying cylinder.
  • the control device controls the rotary drive of the drying cylinder, which is arranged closer to the exit, at a lower speed than the rotary drive of a drying cylinder, which is arranged further away from the exit.
  • the control device is connected to means for detecting at least one parameter which is selected from a group comprising moisture, thread tension and elongation of a thread sheet which runs through the thread sheet path. This gives the control device information that it can use to control the rotary drives.
  • the means preferably have at least one sensor.
  • a sensor which is formed, for example, by dancer rollers to determine the tension of the threads, or which is designed as a moisture sensor to determine the moisture of the threads, the information required by the control device can be obtained in a simple manner.
  • the means have a drive parameter evaluation device. If the rotary drives are designed as electric motors, for example, information about the rotational speed and / or the applied torque can be obtained from parameters of the electrical energy supplied, such as current, voltage, power and / or frequency. If, for example, the surface of a drying cylinder moves with a slip in relation to the thread sheet, then the current consumption of the corresponding rotary drive changes. This can easily be determined by the drive parameter evaluation device.
  • the control device preferably controls the rotary drives for an equal stretching of the thread sheet per drying cylinder.
  • the length of the thread sheet increases by the same amount for each drying cylinder.
  • the speed of rotation and thus also the speed of rotation of the surface of the drying cylinder increases by the same amount from drying cylinder to drying cylinder.
  • control device controls the rotary drives to an equal increase in thread tension of the sheet of threads per drying cylinder. Since the remaining moisture in the threads is further reduced with each drying cylinder, the elastic behavior of the threads changes accordingly. In this case, the change in speed of the drying cylinders is not linear, but is controlled in accordance with the increase in thread tension.
  • a drying cylinder which is arranged closer to the exit is driven at a different speed than a drying cylinder which is further away from the exit.
  • a higher speed one takes into account the fact that the threads stretch a little while drying. With a constant feed speed, more length must be removed per time after the thread has been stretched. This is achieved by increasing the speed of rotation of the drying cylinders during the drying process. As the threads shrink, the speed of rotation of the drying cylinders from entrance to exit decreases.
  • At least one parameter of the sheet of threads is recorded, which is selected from the group of moisture, thread tension and elongation of the sheet of threads, and the speed of the drying cylinder is selected as a function of the at least one parameter. In this way, a target variable can be specified to which the rotational speed of the drying cylinders is to be set.
  • the parameter is preferably recorded with the aid of at least one sensor.
  • a sensor can, for example, interact with the thread sheet in a contacting or non-contacting manner.
  • the parameter is determined from the drive parameters of the rotary drives. In this case, an additional intervention in the thread sheet is not necessary.
  • Drive parameters can be, for example, current and / or voltage and / or power and / or frequency that are fed to the electric rotary drives.
  • the drying cylinder is preferably controlled to an equal stretching of the thread sheet per drying cylinder.
  • the drying cylinders are controlled to an equal increase in thread tension per drying cylinder.
  • the choice of the correct reference variable depends, for example, on the properties of the bundles of threads to be dried. Threads with a higher elasticity are preferably controlled to an equal stretch. Less elastic threads are preferably controlled in such a way that their tension increases by the same amount for each drying cylinder.
  • a device 1 for drying a thread sheet 2 has four drying cylinders 3, 4, 5, 6 in the present exemplary embodiment.
  • the thread sheet 2 is passed through the device 1 in such a way that it wraps around each drying cylinder with as large a wrap angle as possible.
  • the thread sheet 2 wraps around each of the drying cylinders 3-6 by at least 180 °.
  • the thread sheet 2 lies on the surface of the respective drying cylinder 3-6.
  • the drying cylinders 3-6 are heated in a manner not shown here, i.e. the surface of the drying cylinders 3-6 has an increased temperature.
  • the increased temperature of the surfaces of the drying cylinders 3-6 has the effect that moisture contained in the sheet of threads 2 evaporates, that is to say that the sheet of threads 2 is dried as it passes through the device 1.
  • Each drying cylinder 3-6 has its own rotary drive 7, 8, 9, 10.
  • the rotary drives 7-10 are connected to a control device 11 which controls the rotary drives 7-10 individually.
  • the Control device 11 can include means 12 and evaluate the drive parameters of rotary drives 7-10. These drive parameters can be, for example, the current consumed by the respective rotary drive 7-10 or the voltage or electrical power.
  • the frequency can also be determined by the means 12 in order, for example, to obtain information about the speed of rotation of the respective drying cylinders 3-6 and thus about a rotational speed of the surface of the drying cylinders 3-6.
  • the control device can also be connected to schematically illustrated sensors 13-16 (the connections are not shown here for reasons of clarity) in order to determine certain parameters of the thread sheet 2. These parameters can include, for example, moisture, thread tension or elongation of the thread sheet 2.
  • the moisture content of the thread sheet decreases. This decrease in moisture is greatest for the first drying cylinder 3 and the smallest for the last drying cylinder 6. With the decrease in moisture, the elastic behavior of the threads of the thread sheet 2 changes. In addition, the threads of the thread sheet 2 stretch.
  • the greatest elongation of the threads of the thread sheet 2 occurs between the inlet 22 of the device 1 and the first drying cylinder 3. Accordingly, the speed 20 of the surface of the first drying cylinder 3 is also greater than the speed 21 of the thread sheet 2 at the inlet 22 of the device 1.
  • the drying cylinders are now controlled in such a way that the increase in thread tension 19 is the same for each of the drying cylinders 3, 4, 5, 6. This increase is shown by double arrows 24.
  • the speed 20 at which the surfaces of the drying cylinders 3, 4, 5, 6 move is increased accordingly. This increase is not linear here. Nevertheless, the speed of the surface of the last drying cylinder 6, that is to say of the drying cylinder which is arranged closer to an outlet 23 of the device 1, is greater than the speeds of the preceding drying cylinders 3-5.
  • drying cylinder which is arranged closer to the outlet 23 of the device 1, is driven at a lower rotational speed than the rotational speeds of the preceding drying cylinders 3-5.
  • the total thread tension difference between the inlet 22 and the outlet 23, that is between a preceding treatment device (for example a sizing device) and a downstream treatment device, is divided into equal steps.
  • each of the four drying cylinders 3-6 must increase the tension by 375 N.
  • Figure 3 shows a different approach.
  • the moisture 17, the elongation 18 and the tension 19 of the thread sheet 2 and the speed 20 of the drying cylinders 3-6 are shown.
  • the speed 21 of the thread sheet 2 at the input 22 is also shown.
  • the drying cylinders 3-6 are controlled in such a way that the same elongation 25 results in each of the drying cylinders 3-6.
  • Threads with a higher elasticity are preferably treated with a constant elongation per drying cylinder 3-6. Less elastic threads are preferably treated with a constant increase in thread tension per drying cylinder.
  • the control device 11 can obtain the necessary information from the sensors 13-16 (other sensors can be provided additionally or alternatively). Such sensors can, for example, be pneumatically pre-tensioned dancer rollers in order to tension the threads. Springs or other sensors can be used to obtain the necessary information from the thread sheet 2 on the drying cylinders 3-6 or between the drying cylinders 3-6.
  • the parameters of the rotary drives 7-10 can be evaluated, for example torque, speed, slip, power, motor current, motor voltage, etc.
  • the local moisture and elasticity of the thread sheet can be taken into account.
  • the quality of the thread sheet is significantly improved because the threads are softer, more elastic, more resistant and therefore in a much better condition for further processing.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Drying Of Solid Materials (AREA)
EP15176758.9A 2015-07-15 2015-07-15 Vorrichtung und verfahren zum trocknen einer fadenschar Active EP3118553B1 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP15176758.9A EP3118553B1 (de) 2015-07-15 2015-07-15 Vorrichtung und verfahren zum trocknen einer fadenschar
ES15176758T ES2876185T3 (es) 2015-07-15 2015-07-15 Dispositivo y procedimiento para secar un grupo de hilos
CN201610025418.7A CN106352684B (zh) 2015-07-15 2016-01-15 用于干燥纱片的装置和方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP15176758.9A EP3118553B1 (de) 2015-07-15 2015-07-15 Vorrichtung und verfahren zum trocknen einer fadenschar

Publications (2)

Publication Number Publication Date
EP3118553A1 EP3118553A1 (de) 2017-01-18
EP3118553B1 true EP3118553B1 (de) 2021-05-05

Family

ID=53765069

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15176758.9A Active EP3118553B1 (de) 2015-07-15 2015-07-15 Vorrichtung und verfahren zum trocknen einer fadenschar

Country Status (3)

Country Link
EP (1) EP3118553B1 (es)
CN (1) CN106352684B (es)
ES (1) ES2876185T3 (es)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008030340A1 (de) * 2008-06-26 2009-12-31 Siemens Aktiengesellschaft Bestimmung von Geschwindigkeitsrelationen zwischen Antriebsgruppen einer Papiermaschine

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1729422A1 (de) * 1967-10-14 1972-03-23 Krueckels Maschf Zell J Vorrichtung zum Antrieb von Trockenzylindern
GB1245006A (en) * 1967-10-14 1971-09-02 Zell J Krueckels K G Maschf Drying apparatus
ES2036883T3 (es) * 1990-01-19 1993-06-01 Gebruder Sucker + Franz Muller Gmbh & Co Dispositivo para secar un mazo de hilos.
DE19956752A1 (de) * 1999-11-26 2000-09-21 Voith Sulzer Papiertech Patent Antriebsregelung
DE10100330B4 (de) * 2001-01-05 2007-04-26 Moenus Textilmaschinen Gmbh Verfahren und Vorrichtung zum Trocknen einer Fadenschar
DE102011005101A1 (de) * 2011-03-04 2012-09-06 Karl Mayer Textilmaschinenfabrik Gmbh Textilbehandlungsmaschine und Verfahren zum Trocknen textiler Strukturen

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008030340A1 (de) * 2008-06-26 2009-12-31 Siemens Aktiengesellschaft Bestimmung von Geschwindigkeitsrelationen zwischen Antriebsgruppen einer Papiermaschine

Also Published As

Publication number Publication date
CN106352684B (zh) 2020-11-03
CN106352684A (zh) 2017-01-25
ES2876185T3 (es) 2021-11-12
EP3118553A1 (de) 2017-01-18

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