EP3336228B1 - Method for operating a draw frame and a draw frame for drawing a sliver - Google Patents

Method for operating a draw frame and a draw frame for drawing a sliver Download PDF

Info

Publication number
EP3336228B1
EP3336228B1 EP17205448.8A EP17205448A EP3336228B1 EP 3336228 B1 EP3336228 B1 EP 3336228B1 EP 17205448 A EP17205448 A EP 17205448A EP 3336228 B1 EP3336228 B1 EP 3336228B1
Authority
EP
European Patent Office
Prior art keywords
sliver
drafting system
thin part
rollers
draw frame
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
EP17205448.8A
Other languages
German (de)
French (fr)
Other versions
EP3336228A1 (en
Inventor
Markus Hillerbrand
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.)
Rieter Ingolstadt GmbH
Original Assignee
Rieter Ingolstadt 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 Rieter Ingolstadt GmbH filed Critical Rieter Ingolstadt GmbH
Publication of EP3336228A1 publication Critical patent/EP3336228A1/en
Application granted granted Critical
Publication of EP3336228B1 publication Critical patent/EP3336228B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
    • D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
    • D01H5/32—Regulating or varying draft
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
    • D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
    • D01H5/22—Drafting machines or arrangements without fallers or like pinned bars in which fibres are controlled by rollers only
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H54/00—Winding, coiling, or depositing filamentary material
    • B65H54/76—Depositing materials in cans or receptacles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H67/00—Replacing or removing cores, receptacles, or completed packages at paying-out, winding, or depositing stations
    • B65H67/02—Arrangements for removing spent cores or receptacles and replacing by supply packages at paying-out stations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H67/00—Replacing or removing cores, receptacles, or completed packages at paying-out, winding, or depositing stations
    • B65H67/04—Arrangements for removing completed take-up packages and or replacing by cores, formers, or empty receptacles at winding or depositing stations; Transferring material between adjacent full and empty take-up elements
    • B65H67/0428—Arrangements for removing completed take-up packages and or replacing by cores, formers, or empty receptacles at winding or depositing stations; Transferring material between adjacent full and empty take-up elements for cans, boxes and other receptacles
    • B65H67/0434—Transferring material devices between full and empty cans
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G15/00—Carding machines or accessories; Card clothing; Burr-crushing or removing arrangements associated with carding or other preliminary-treatment machines
    • D01G15/02—Carding machines
    • D01G15/10—Carding machines with other apparatus, e.g. drafting devices, in integral or closely-associated combination
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H1/00—Spinning or twisting machines in which the product is wound-up continuously
    • D01H1/14—Details
    • D01H1/20—Driving or stopping arrangements
    • D01H1/22—Driving or stopping arrangements for rollers of drafting machines; Roller speed control
    • 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
    • B65H2701/311—Slivers

Definitions

  • the present invention relates to a method for operating a draw frame, in particular for starting and/or stopping the draw frame, for example for a can change and/or for threading the fiber sliver into a sliver channel.
  • a sliver is passed between the drafting system rollers of a drafting system, which distort the sliver.
  • a thin point is produced in the sliver in order to be able to separate the sliver at the thin point.
  • the present invention includes a draw frame for drafting the sliver with a controller, by means of which at least drafting system rollers of the drafting system can be controlled.
  • the object of the present invention is therefore to increase process reliability when operating the draw frame.
  • a method for operating a route, in particular for starting and/or stopping the route is proposed.
  • the starting and stopping can be carried out, for example, for a can change and/or for a later threading of a fiber sliver into a sliver channel.
  • the sliver is passed between drafting rollers of a drafting system, which stretch the sliver. Before the sliver reaches the drafting rollers, it has a certain thickness. The sliver is stretched lengthwise by the drafting system rollers so that it becomes thinner. Thinning makes the sliver more uniform and more workable for subsequent processing. In order to be able to separate the sliver, a thin area is created in the sliver by the drafting system rollers. The thin point serves as a predetermined breaking point or as a desired weak point, so that the sliver can be defined and easily separated there.
  • the thin point in the sliver is produced during a holding phase of the draw frame.
  • the draw frame is stopped so that, for example, a sliver jam is prevented.
  • the fiber sliver can then be treated further while the draw frame is stationary.
  • the sliver is separated in a controlled manner at the thin point.
  • a can change and/or maintenance of the draw frame can be carried out.
  • the thin point in the sliver is produced during a start phase of the drawing frame.
  • the fiber sliver is separated by means of the thin area created in the starting phase, so that the fiber sliver has a defined start from this point. In particular, this allows thick points to be removed from the sliver at the start of the draw frame.
  • a length and/or a thickness of the thin point is generated as a function of parameters of the fiber sliver and/or the draw frame.
  • Parameters of the fiber sliver are, for example, the fiber material, a strength of the fiber sliver and/or the nature. If the sliver has a large cross section, for example, it is advantageous if the thin area has a longer extension along the sliver, so that a transition from the thin area to the normal sliver is flatter. If, on the other hand, the dimensions of the drafting system are smaller, for example, it is advantageous if the thin point has a smaller extent along the sliver. If, on the other hand, the strength of the sliver is high, for example, the thin point can be made particularly thin.
  • the drafting system is closed before or in the starting phase of the draw frame and/or opened after or in the holding phase of the draw frame of the drafting system.
  • a cover of the drafting system can be closed and/or opened. This is a relief for the staff who have to carry out maintenance work on the drafting system, for example.
  • the starting phase has a duration of between 0.5 s and 5 s, with the fiber sliver being accelerated to a delivery speed during this duration.
  • the duration can also be between 1 s and 4 s, with the thin point being generated during this duration.
  • the thin point can be created in an initial section, in a middle section and/or in an end section of the duration, with the individual sections dividing the starting phase into equal time periods, for example.
  • the sliver can be accelerated to a maximum delivery speed of 1200 m/min, for example.
  • the drafting system rollers are set in rotation.
  • the maximum delivery speed corresponds to a speed on a delivery drive of approx. 4500 rpm (revolutions per minute) and approx. 9500 rpm at the output cylinders of the drafting system rollers.
  • the holding phase has a duration of between 0.2 s and 4 s, with the fiber sliver being decelerated by the delivery speed during this duration.
  • the delivery drive and the output cylinders are braked from a maximum speed (similar to the values for the start phase).
  • the thin point can be generated in an initial section, in a middle section and/or in an end section of the duration, with the individual sections dividing the holding phase into equal time periods, for example.
  • the delivery speed of the sliver is continuously reduced during the holding phase.
  • the delivery speed can be reduced linearly and/or parabolic, for example.
  • the delivery speed of the sliver can be generated by the rotation of the drafting system rollers.
  • the delivery speed of the sliver can be reduced by reducing the speed of the drafting rollers.
  • a continuous reduction in the delivery speed can therefore be achieved by continuously reducing the speed of the drafting system rollers.
  • the continuous reduction of the speed of the drafting system rollers can be carried out with particularly little effort and in a way that is gentle on the material.
  • the location of the thin point naturally depends on the delivery speed of the sliver.
  • the location of the thin spot is easier to trace with a continuous decrease in the delivery speed than with a more complicated course of the delivery speed.
  • the continuous decrease in the speed of the rollers and the resulting decrease in the delivery speed can be particularly easy to reach.
  • the drafting system rollers can be switched to be non-driven by switching off an electric current from a drive. Due to frictional resistance, among other things in the bearings of the drafting system rollers, the speed is constantly reduced, so that the delivery speed of the sliver is also continuously reduced.
  • the drafting system rollers can also be braked with the aid of a braking device.
  • a constant braking effect leads to a linear reduction in the speed of the drafting system rollers and thus to a linear reduction in the delivery speed of the sliver.
  • a continuous braking of the drafting system rollers and thus a continuous reduction in the delivery speed also has another advantage.
  • the fiber sliver is slowed down gently, so that flaws in the fiber sliver are prevented as well as possible.
  • the continuous braking of the drafting system rollers also has advantages for the mechanics of the drafting system compared to non-continuous braking. Abrupt braking can lead to increased wear, for example of bearings, couplings between a drive and the drafting system rollers, or to overloading of the electronics, which is largely prevented with continuous braking.
  • the delivery speed of the fiber sliver is continuously increased during the starting phase.
  • Increasing the delivery speed of the sliver continuously has essentially the same advantages as reducing the delivery speed.
  • the sliver is protected, the mechanics of the drafting system rollers and/or the drive are less stressed and it can be carried out more easily.
  • the thin point is formed by means of an increase in a draft applied compared to the normal drafting of the sliver.
  • normal warping is a factor of six. This means that a fiber sliver leaving the drafting system is stretched six times compared to a fiber sliver entering the drafting system.
  • the distortion can be increased by 25% to 100%, for example.
  • the delay can preferably also be increased by 50%.
  • the 50% increase in warpage means that while the thin spot is being created, the warpage is short term by a factor of nine. After the thin point has been created, the distortion is reset to the value of six, for example.
  • the increase in the delay is formed by reducing the speed of a pair of rollers of the drafting system rollers compared to a speed of a pair of rollers of the drafting system rollers arranged downstream of this pair of rollers in the delivery direction of the sliver.
  • the delay is thus achieved in that a speed of a pair of rollers, which is in contact with the fiber sliver first in the delivery direction, is reduced compared to a subsequent pair of rollers.
  • the speed of a pair of rollers located further to the rear in the delivery direction of the sliver can also be increased compared to a pair of rollers located further forward in order to increase the draft.
  • the speed of at least one pair of rollers of the drafting system rollers can be reduced compared to a pair of delivery rollers arranged downstream, in order to produce the thin point.
  • the pair of delivery rollers can be arranged, for example, between the turntable and the sliver funnel.
  • the stopping phase is carried out when a malfunction of the path is detected, with the thin point first being produced during the stopping phase and then the path being stopped.
  • a malfunction can be, for example, a sliver winding around a drafting system roller, a sliver jam or the like, which reduces or even prevents the draw frame from functioning properly. If the malfunction is detected, the holding phase is carried out and the thin point is produced during the holding phase, so that after the malfunction has been eliminated the fiber sliver can be separated at the thin point and can be supplied again.
  • the holding phase can also be carried out as follows.
  • An electronic coupling can be canceled between an infeed drive and a delivery and/or deposit drive. Due to the inertia ratios, the feed drive can decelerate much more quickly than if it has to run synchronously with the delivery drive and/or the storage drive. In these cases, braking the infeed drive as quickly as possible reduces the lap thickness, for example, since less material is fed into the drafting system than with normal stopping. Additionally or alternatively, the delay can also be significantly increased during the holding phase.
  • an end part of the sliver arranged after the thin point in the delivery direction of the sliver is removed manually, mechanically and/or by means of compressed air, so that the sliver is separated at the thin point.
  • the end part of the sliver can still be removed in the holding phase and/or in the starting phase.
  • the tail is removed, there remains a beginning of the remaining sliver beginning with the thin spot.
  • the thinner sliver in the region of the thin point can be threaded more easily between rollers located behind and/or more easily into a sliver funnel located behind. If the end part is removed during the holding phase and/or the starting phase so that only at least part of the thin area at the beginning of the sliver remains, subsequent threading can be carried out more easily.
  • a sliver defect for example a fiber winding of the sliver around a drafting roller, a defect in the sliver or a sliver jam is removed manually, mechanically and/or by means of compressed air and the thin point is then produced, particularly in the starting phase.
  • the beginning of the sliver which is still thinned out by the thin point, can be threaded more easily between the calender rollers and/or into the sliver funnel during the starting phase.
  • the sliver is separated in a region of the thin point, so that an initial part of the sliver is still thinned.
  • this thinned initial part can be threaded more easily into the sliver funnel and/or between a pair of rollers.
  • the initial part can also be more easily threaded back between the drafting system rollers or into the drafting system if the sliver also slips out of the drafting system.
  • the initial part is arranged at the end of the sliver, which is arranged in the drafting system.
  • this thinned initial part of the sliver is threaded by means of an air flow, in particular in the holding phase and/or starting phase, into a sliver funnel arranged in the delivery direction after the drafting system rollers and/or between the pair of calender rollers.
  • the draw frame has an air nozzle, for example, which is arranged in the area of the sliver funnel so that it generates the air flow that threads the initial part into the sliver funnel.
  • the route can also have several air nozzles have, so that, for example, the beginning part can be threaded additionally or alternatively between the drafting rollers of the drafting system or between the calender rollers.
  • the end of the initial part of the fiber sliver is delivered further until the thin point or the end of the initial part of the fiber sliver is in a region of a turntable, in particular in an area of an outlet of the turntable.
  • the onward transport can also preferably be carried out during the holding phase and/or the starting phase.
  • the fiber sliver is measured by sensors after and/or during the starting phase of the drawing frame.
  • the sensors can be arranged, for example, on the pair of calender rollers and can be designed, for example, as microwave sensors and/or light barrier sensors.
  • a controller continues to operate the route based on the measurement of the sensors if the start phase is successful. Additionally or alternatively, in the event of an incorrect start phase, the controller can stop the segment again, preferably after the thin point has been generated again.
  • a draw frame for drafting a sliver with a controller, by means of which at least drafting system rollers of a drafting system can be controlled.
  • the controller is configured in such a way that the route can be operated according to a method according to one or more of the descriptions above and/or below.
  • figure 1 shows a schematic view of a draw frame 1 in which a sliver 2 is stretched.
  • the sliver 2 is stretched in a delivery direction L in a drafting system 3 and deposited in a can 14 by a turntable 13 .
  • this has a pair of transport rollers 8. Downstream in the delivery direction L are two lower deflection points 9a, 9b and two upper deflection points 10a, 10b. After the deflection points 9a, 9b, 10a, 10b, the sliver 2 is introduced into the drafting system 3, in which the sliver 2 is drawn.
  • the drafting system 3 comprises an input roller pair 4, an intermediate roller pair 5 and an output roller pair 6.
  • the input roller pair 4 also has a lower roller 4a and an upper roller 4b
  • the intermediate roller pair 5 has a lower roller 5a and an upper roller 5b
  • the output roller pair 6 has a lower roller 6a and two top rollers 6b, 6c.
  • All rollers mentioned here can be combined as drafting rollers 4, 5, 6.
  • the top rollers 4b, 5b, 6b, 6c all have a direction of rotation D (for the sake of simplicity, the direction of rotation D is only shown on the top roller 4b).
  • the lower rollers 4a, 5a, 6a all have a direction of rotation opposite to the direction of rotation D, so that the sliver 2 is passed on through the drafting system rollers 4, 5, 6.
  • the sliver 2 is passed between the drafting system rollers 4, 5, 6 of the drafting system 3.
  • the drafting system 3 drafts the sliver 2 in that a rotational speed of the drafting system rollers 4, 5, 6 in the delivery direction L is increased.
  • the input roller pair 4 rotates at a reference speed.
  • the pair of intermediate rollers 5 rotates at a higher rotational speed than the reference speed, so that the sliver is stretched between the pair of input rollers 4 and the pair of intermediate rollers 5 .
  • the output roller pair 6 can rotate at a higher rotational speed than the intermediate roller pair 5.
  • the fiber sliver 2 is also stretched or warped by these two roller pairs 5, 6.
  • the sliver 2 can be drawn by a factor of six by the drafting system 3 . This means that the fiber sliver 2 has a cross section six times higher before it enters the drafting system 3 than after the drafting system 3 . As a result, the sliver 2 is homogenized.
  • the warped sliver 2 After the warped sliver 2 leaves the drafting system 3 , it is passed through a sliver funnel 11 and after the sliver funnel 11 is measured by a pair of calender rollers 12 . The sliver 2 is finally deposited in the can 14 by means of a turntable 13 .
  • a thin point 7 in the sliver 2 is arranged between the pair of output rollers 6 and the sliver funnel 11 , and it can be separated at the thin point 7 .
  • the thin point 7 acts as a predetermined breaking point.
  • the thin point 7 is created in such a way that the sliver 2 together with the thin point 7 can be transported further.
  • the thin point 7 shown here and arranged between the pair of output rollers 6 and the sliver funnel 11 can be transported further to a region of the turntable 13 .
  • the fiber sliver 2 can only be separated, for example in order to carry out a can change, when the thin point 7 is arranged on the turntable 13, in particular at its outlet.
  • the thin point 7 can have a cross section and a length in the direction of the sliver 2 that depend on a material and/or the nature of the sliver 2 itself.
  • the thin point 7 can be made very thin if the sliver 2 is made of a resistant material. As a result, the transportability of the sliver 2 is still given. However, the sliver 2 can also easily be separated at the thin point 7 .
  • the thin point 7 in the sliver 2 is produced during a holding phase of the draw frame 1 .
  • the thin point 7 can also be generated during a start phase of the section 1 . If the thin point 7 is produced during the holding phase and/or start phase, the productivity of the section 1 is increased since the additional step for producing the thin point 7 can be dispensed with.
  • the fiber sliver 2 can still be separated at the thin point 7 during the holding phase and/or starting phase.
  • the process reliability is increased by the production of the thin point 7 and the subsequent stopping of the draw frame 1, since the fiber sliver is no longer separated and further processed at the thin point 7 while the draw frame 1 is running. This avoids a source of error.
  • the thin point 7 can also be produced if a pair of rollers further ahead in the delivery direction L of the fiber sliver 2 is braked, whereas the other pairs of rollers are not braked or are braked to a lesser extent.
  • the pair of transport rollers 8 can be decoupled from the others in terms of a rotational behavior.
  • the pair of transport rollers 8 can also be braked to a greater extent because it has a simpler structure.
  • the pair of transport rollers 8 decelerates more quickly, for example due to a lower weight. If the pair of transport rollers 8 is independently braked faster than, for example, the drafting rollers 4, 5, 6, the sliver 2 is also stretched more, so that the thin point 7 is formed.
  • the thin point 7 is formed in an area between the pair of transport rollers 8 and the drafting system 3 .
  • This has the advantage that less fiber sliver 2 reaches the drafting system 3 as a result.
  • the drafting system rollers 4, 5, 6 do not have to be braked. They can also continue to be driven quite normally until the thin point 7 has been transported further, for example to the position shown or to the turntable 13 .
  • the draw frame 1 has a sliver separator 22 .
  • This can separate the sliver 2 mechanically and/or, as shown in this exemplary embodiment, by means of an air nozzle.
  • the sliver separator 22 generates an air flow between the sliver funnel 11 and the pair of calender rollers 12, which exerts a force on the sliver 2 arranged there.
  • the sliver separator 22 can also tear off the sliver 2 mechanically.
  • the sliver separator 22 can include an arm that pulls away the sliver 2 and thereby tears it off.
  • the sliver separator 22 can also be arranged in another area in the draw frame 1 .
  • the sliver separator 22 can also be arranged directly in the area of the thin point 7, in the area of the drafting system 3, in the area between the pair of calender rollers 12 and the turntable 13 and/or in the area between the turntable 13 and the can 14.
  • the sliver separator 22 can be arranged, for example, where the thin point should preferably be located during separation.
  • a separation of the sliver 2 without a sliver separator 22 is possible, for example, by initiating a can change when the thin point 7 is in the turntable 13 or in the region between the turntable 13 and the can 14 .
  • the sliver 2 in the can is removed from the turntable 13 more quickly than the sliver 2 is subsequently supplied, as a result of which the sliver 2 tears at the thin point 7 .
  • figure 2 shows a diagram with operating parameters of route 1 as an example during the holding phase.
  • the x-axis corresponds to the time axis.
  • the y-axis corresponds to speed values for two speed curves 16, 17 on the one hand and values for a delay 15 on the other.
  • the holding phase has a beginning 20 and an end 21 .
  • the thin point 7 is generated during the holding phase.
  • the diagram also shows the warpage 15, which is essentially constant at least in sections, in particular up to a point in time at which a warpage increase 18 begins.
  • the delay 15 in the constant range can have a value of six, for example.
  • the two speed curves 16 and 17 of, for example, two pairs of rollers of the drafting system 3 are shown in the diagram.
  • the speed curves 16, 17 are shown congruently except for a period of a speed reduction 19.
  • this does not necessarily mean that the speed curves 16 and 17 also have the same value.
  • a different scale than for the speed curve 17 can apply to the speed curve 16 .
  • the speed curve 16 applies to a pair of rollers that move in the delivery direction L of the sliver 2 (cf. figure 1 ) is positioned in front of a pair of rollers with the speed profile 17.
  • the speed curve 16 applies to the input roller pair 4 of the drafting system 3 and the speed curve 17 to the intermediate roller pair 5 or the output roller pair 6.
  • the speed curve 17 can also be used for an in figure 1 not shown pair of delivery rollers apply, which is arranged in the delivery direction L of the sliver 2 after the drafting system 3.
  • the speed profile 16 can also apply to the intermediate roller pair 5 and the speed profile 17 to the output roller pair 6 and/or the delivery roller pair.
  • the speed curve 16 can also apply to the output roller pair 6 and the speed curve 17 to the delivery roller pair.
  • the pair of output rollers 6 rotates faster than the pair of intermediate rollers 5 and the pair of intermediate rollers 5 faster than the pair of input rollers 4. If the speeds of the pairs of drafting rollers 4, 5, 6 are constant, the draft 15 of the sliver 2 is also constant, for example at one factor six.
  • the draft increase 18 is formed at least briefly.
  • a speed reduction 19 is carried out.
  • the speed of the input roller pair 4 is briefly decelerated to form the draft increase 18 compared to the speed of a subsequent roller pair, as is illustrated by the speed curve 16 arranged below the speed curve 17 during the speed reduction 19 .
  • the two speed curves 16 and 17 are continuously falling.
  • the two speed curves 16 and 17 are even designed to fall linearly. This is of particular advantage since the thin point 7 is produced gently for the fiber sliver 2 by means of such speed curves 16 and 17 .
  • this protects the mechanics of the drafting system 3 because abrupt accelerations of the drafting system rollers 4, 5, 6 and their drives are largely avoided.
  • the linear speed curves 16, 17 can be achieved, for example, by switching the roller pairs 4, 5, 6 and/or the delivery roller drive to a non-driven state.
  • the rollers are braked to a standstill by frictional resistance.
  • the rollers can also be slowed down with the help of a braking device.
  • the duration of the holding phase ie the time difference between the end 21 and the beginning 20 of the holding phase, can be in a range between 0.2 s and 4 s, for example. However, the holding phase can also have a duration of between 0.5 s and 2 s.
  • figure 3 shows a schematic view of a drawing frame 1 with fiber sliver 2 separated at the thin point 7.
  • the fiber sliver 2 is separated at the thin point 7 , with only an initial part 23 of the fiber sliver 2 still being arranged in the section 1 .
  • the sliver 2 is also separated at the thin point 7 in such a way that a section of the thin point 7 still remains at the beginning part 23 .
  • the initial part 23 thus begins with part of the thin point 7. This is advantageous in that the initial part 23 of the sliver 2 can be threaded more easily into the sliver funnel 11 and/or between the pair of calender rollers 12.
  • this exemplary embodiment has a sliver feeder 24.
  • This is designed as an air nozzle that forms an air flow and pushes the beginning part 23 through the sliver funnel 11 .
  • the sliver feeder 24 can also be arranged between the sliver funnel 11 and the pair of calender rollers 12 in order to thread the initial part 23 there.
  • the sliver feeder 24 can also be arranged between the pair of calender rollers 12 and the turntable 13 in order to introduce the starting part 23 into the turntable 13 .
  • the sliver feeder 24 can also be designed mechanically.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)

Description

Die vorliegende Erfindung betrifft ein Verfahren zum Betreiben einer Strecke, insbesondere zum Starten und/oder Anhalten der Strecke, beispielsweise für einen Kannenwechsel und/oder zum Einfädeln des Faserbandes in einen Bandkanal. Dabei wird ein Faserband zwischen Streckwerkswalzen eines Streckwerks hindurch geleitet, welche das Faserband verziehen. Außerdem wird im Faserband eine Dünnstelle erzeugt, um an der Dünnstelle das Faserband trennen zu können. Ferner umfasst die vorliegende Erfindung eine Strecke zum Verziehen des Faserbandes mit einer Steuerung, mittels der zumindest Streckwerkswalzen des Streckwerks gesteuert werden können.The present invention relates to a method for operating a draw frame, in particular for starting and/or stopping the draw frame, for example for a can change and/or for threading the fiber sliver into a sliver channel. In this case, a sliver is passed between the drafting system rollers of a drafting system, which distort the sliver. In addition, a thin point is produced in the sliver in order to be able to separate the sliver at the thin point. Furthermore, the present invention includes a draw frame for drafting the sliver with a controller, by means of which at least drafting system rollers of the drafting system can be controlled.

Aus der DE 195 48 232 C5 ist ein Verfahren zum Trennen eines Faserbandes beim Kannenwechsel an einer Strecke bekannt. Darin wird in dem Faserband eine Dünnstelle erzeugt, an der beim Kannenwechsel das Faserband abreißt. Nachteilig bei dieser Strecke ist, dass während dem Kannenwechsel und der Bandtrennung das Faserband kontinuierlich weiter geliefert wird und es dadurch zu Komplikationen kommen kann.From the DE 195 48 232 C5 a method for separating a fiber sliver when changing cans on a drawing frame is known. A thin spot is created in the sliver at which the sliver tears when the can is changed. The disadvantage of this draw frame is that during the can change and the sliver separation, the sliver is continuously supplied and this can lead to complications.

Aus der DE 10 2004 017 441 A1 ist ein Verfahren zum Einleiten eines Trennvorgangs eines Faserverbundes am Ausgang einer Spinnereivorbereitungsmaschine bekannt. Dazu wird die Maschine gestoppt, eine Dünnstelle im Faserverbund wird erzeugt und der Faserverbund wird getrennt.From the DE 10 2004 017 441 A1 a method for initiating a separation process of a fiber composite at the exit of a spinning preparation machine is known. To do this, the machine is stopped, a thin area is created in the fiber composite and the fiber composite is separated.

Aufgabe der vorliegenden Erfindung ist es somit, eine Prozesssicherheit beim Betreiben der Strecke zu erhöhen.The object of the present invention is therefore to increase process reliability when operating the draw frame.

Die Aufgabe wird gelöst durch ein Verfahren zum Betreiben einer Strecke sowie der Strecke selbst mit den Merkmalen der unabhängigen Patentansprüche.The object is achieved by a method for operating a track and the track itself with the features of the independent patent claims.

Vorgeschlagen wird ein Verfahren zum Betreiben einer Strecke, insbesondere zum Starten und/oder Anhalten der Strecke. Das Starten bzw. das Anhalten kann beispielsweise für einen Kannenwechsel und/oder für ein späteres Einfädeln eines Faserbandes in einen Bandkanal durchgeführt werden.A method for operating a route, in particular for starting and/or stopping the route, is proposed. The starting and stopping can be carried out, for example, for a can change and/or for a later threading of a fiber sliver into a sliver channel.

Bei dem Verfahren wird das Faserband zwischen Streckwerkswalzen eines Streckwerks hindurch geleitet, welche das Faserband verstrecken. Bevor das Faserband die Streckwerkswalzen erreicht, weist es eine gewisse Dicke auf. Durch die Streckwerkswalzen wird das Faserband in die Länge gestreckt, so dass es sich verdünnt. Durch das Verdünnen wird das Faserband gleichmäßiger und wird für eine nachfolgende Bearbeitung besser bearbeitbar. Um das Faserband trennen zu können, wird durch die Streckwerkswalzen eine Dünnstelle im Faserband erzeugt. Die Dünnstelle dient als Sollbruchstelle bzw. als eine gewollte Schwachstelle, so dass daran das Faserband definiert und leicht getrennt werden kann.In the method, the sliver is passed between drafting rollers of a drafting system, which stretch the sliver. Before the sliver reaches the drafting rollers, it has a certain thickness. The sliver is stretched lengthwise by the drafting system rollers so that it becomes thinner. Thinning makes the sliver more uniform and more workable for subsequent processing. In order to be able to separate the sliver, a thin area is created in the sliver by the drafting system rollers. The thin point serves as a predetermined breaking point or as a desired weak point, so that the sliver can be defined and easily separated there.

Erfindungsgemäß wird während einer Haltephase der Strecke die Dünnstelle im Faserband erzeugt. Nach dem Ausbilden der Dünnstelle wird die Strecke gestoppt, so dass beispielsweise ein Faserbandstau verhindert wird. Zusätzlich oder alternativ kann danach das Faserband bei stehender Strecke weiter behandelt werden. Das Faserband wird an der Dünnstelle kontrolliert getrennt. Außerdem kann, nachdem die Strecke gestoppt ist, ein Kannenwechsel und/oder eine Wartung der Strecke durchgeführt werden.According to the invention, the thin point in the sliver is produced during a holding phase of the draw frame. After the thin point has been formed, the draw frame is stopped so that, for example, a sliver jam is prevented. Additionally or alternatively, the fiber sliver can then be treated further while the draw frame is stationary. The sliver is separated in a controlled manner at the thin point. In addition, after the draw frame has stopped, a can change and/or maintenance of the draw frame can be carried out.

Zusätzlich oder alternativ wird während einer Startphase der Strecke die Dünnstelle im Faserband erzeugt. Mittels der in der Startphase erzeugten Dünnstelle wird das Faserband getrennt, so dass das Faserband ab dieser Stelle einen definierten Anfang aufweist. Insbesondere können dadurch Dickstellen zum Start der Strecke im Faserband entfernt werden.Additionally or alternatively, the thin point in the sliver is produced during a start phase of the drawing frame. The fiber sliver is separated by means of the thin area created in the starting phase, so that the fiber sliver has a defined start from this point. In particular, this allows thick points to be removed from the sliver at the start of the draw frame.

In einer vorteilhaften Weiterbildung der Erfindung wird eine Länge und/oder eine Dicke der Dünnstelle in Abhängigkeit von Parametern des Faserbandes und/oder der Strecke erzeugt. Parameter des Faserbandes sind beispielsweise das Fasermaterial, eine Festigkeit des Faserbandes und/oder die Beschaffenheit. Weist das Faserband beispielsweise einen großen Querschnitt auf, ist es vorteilhaft, wenn die Dünnstelle eine längere Ausdehnung entlang des Faserbandes hat, so dass ein Übergang von der Dünnstelle zum normalen Faserband flacher ist. Sind dagegen beispielsweise die Abmessungen des Streckwerks geringer, ist es von Vorteil, wenn die Dünnstelle eine geringere Ausdehnung entlang des Faserbandes aufweist. Ist dagegen beispielsweise die Festigkeit des Faserbandes hoch, kann die Dünnstelle besonders dünn ausgebildet werden.In an advantageous development of the invention, a length and/or a thickness of the thin point is generated as a function of parameters of the fiber sliver and/or the draw frame. Parameters of the fiber sliver are, for example, the fiber material, a strength of the fiber sliver and/or the nature. If the sliver has a large cross section, for example, it is advantageous if the thin area has a longer extension along the sliver, so that a transition from the thin area to the normal sliver is flatter. If, on the other hand, the dimensions of the drafting system are smaller, for example, it is advantageous if the thin point has a smaller extent along the sliver. If, on the other hand, the strength of the sliver is high, for example, the thin point can be made particularly thin.

Ebenfalls ist es von Vorteil, wenn vor oder in der Startphase der Strecke das Streckwerk geschlossen und/oder nach oder in der Haltephase der Strecke des Streckwerks geöffnet wird. Dazu kann beispielsweise eine Abdeckung des Streckwerks geschlossen und/oder geöffnet werden. Dies ist eine Erleichterung für das Personal, das beispielsweise Wartungsarbeiten an dem Streckwerk durchführen muss.It is also advantageous if the drafting system is closed before or in the starting phase of the draw frame and/or opened after or in the holding phase of the draw frame of the drafting system. For this purpose, for example, a cover of the drafting system can be closed and/or opened. This is a relief for the staff who have to carry out maintenance work on the drafting system, for example.

Von Vorteil ist es auch, wenn die Startphase eine Dauer zwischen 0,5 s und 5 s aufweist, wobei während dieser Dauer das Faserband auf eine Liefergeschwindigkeit beschleunigt wird. Die Dauer kann auch zwischen 1 s und 4 s betragen, wobei die Dünnstelle während dieser Dauer erzeugt wird. Beispielsweise kann die Dünnstelle in einem Anfangsabschnitt, in einem Mittelabschnitt und/oder in einem Endabschnitt der Dauer erzeugt werden, wobei die einzelnen Abschnitte die Startphase beispielsweise in gleiche Zeitdauern unterteilen. Dabei kann das Faserband auf eine maximale Liefergeschwindigkeit von beispielsweise 1200 m/min beschleunigt werden. Um das Faserband während einer derartigen Dauer auf die Liefergeschwindigkeit zu beschleunigen, werden die Streckwerkswalzen in Rotation versetzt. Die maximale Liefergeschwindigkeit entspricht dabei einer Drehzahl an einem Lieferantrieb von ca. 4500 Upm (Umdrehungen pro Minute) und ca. 9500 Upm an Ausgangszylindern der Streckwerkswalzen.It is also advantageous if the starting phase has a duration of between 0.5 s and 5 s, with the fiber sliver being accelerated to a delivery speed during this duration. The duration can also be between 1 s and 4 s, with the thin point being generated during this duration. For example, the thin point can be created in an initial section, in a middle section and/or in an end section of the duration, with the individual sections dividing the starting phase into equal time periods, for example. The sliver can be accelerated to a maximum delivery speed of 1200 m/min, for example. In order to accelerate the sliver to the delivery speed during such a period, the drafting system rollers are set in rotation. The maximum delivery speed corresponds to a speed on a delivery drive of approx. 4500 rpm (revolutions per minute) and approx. 9500 rpm at the output cylinders of the drafting system rollers.

Ebenfalls ist es von Vorteil, wenn die Haltephase eine Dauer zwischen 0,2 s und 4 s aufweist, wobei während dieser Dauer das Faserband von der Liefergeschwindigkeit abgebremst wird. Während der Haltephase werden der Lieferantrieb und die Ausgangszylinder von einer maximalen Drehzahl (ähnlich den Werten wie für die Startphase) abgebremst. Die Dünnstelle kann hier wieder in einem Anfangsabschnitt, in einem Mittelabschnitt und/oder einem Endabschnitt der Dauer erzeugt werden, wobei die einzelnen Abschnitte die Haltephase beispielsweise in gleiche Zeitdauern unterteilen.It is also advantageous if the holding phase has a duration of between 0.2 s and 4 s, with the fiber sliver being decelerated by the delivery speed during this duration. During the holding phase, the delivery drive and the output cylinders are braked from a maximum speed (similar to the values for the start phase). Here again, the thin point can be generated in an initial section, in a middle section and/or in an end section of the duration, with the individual sections dividing the holding phase into equal time periods, for example.

Einen besonderen Vorteil stellt es dar, wenn während der Haltephase die Liefergeschwindigkeit des Faserbandes kontinuierlich verringert wird. Die Liefergeschwindigkeit kann dabei beispielsweise linear und/oder parabolisch verringert werden. Wie bereits vorstehend beschrieben ist, kann die Liefergeschwindigkeit des Faserbandes durch die Rotation der Streckwerkswalzen erzeugt werden. Insbesondere kann die Liefergeschwindigkeit des Faserbandes verringert werden, indem die Drehzahl der Streckwerkswalzen reduziert wird. Ein kontinuierliches Verringern der Liefergeschwindigkeit kann also dadurch erreicht werden, dass die Drehzahl der Streckwerkswalzen kontinuierlich reduziert wird.It represents a particular advantage if the delivery speed of the sliver is continuously reduced during the holding phase. The delivery speed can be reduced linearly and/or parabolic, for example. As already described above, the delivery speed of the sliver can be generated by the rotation of the drafting system rollers. In particular, the delivery speed of the sliver can be reduced by reducing the speed of the drafting rollers. A continuous reduction in the delivery speed can therefore be achieved by continuously reducing the speed of the drafting system rollers.

Die kontinuierliche Reduktion der Drehzahl der Streckwerkswalzen kann dabei mit besonders geringem Aufwand und materialschonend durchgeführt werden. Zum einen ist natürlich ein Ort der Dünnstelle von der Liefergeschwindigkeit des Faserbandes abhängig. Der Ort der Dünnstelle ist mit einer kontinuierlichen Abnahme der Liefergeschwindigkeit einfacher nachzuverfolgen als bei einem komplizierteren Liefergeschwindigkeitsverlauf.The continuous reduction of the speed of the drafting system rollers can be carried out with particularly little effort and in a way that is gentle on the material. On the one hand, the location of the thin point naturally depends on the delivery speed of the sliver. The location of the thin spot is easier to trace with a continuous decrease in the delivery speed than with a more complicated course of the delivery speed.

Zum anderen kann die kontinuierliche Abnahme der Drehzahl von Walzen und der daraus resultierenden Abnahme der Liefergeschwindigkeit besonders einfach erreicht werden. Beispielsweise können die Streckwerkswalzen antriebslos geschaltet werden, indem ein elektrischer Strom eines Antriebs abgeschaltet wird. Durch einen Reibungswiderstand, unter anderem in Lagern der Streckwerkswalzen, wird die Drehzahl konstant verringert, so dass auch die Liefergeschwindigkeit des Faserbandes kontinuierlich verringert wird.On the other hand, the continuous decrease in the speed of the rollers and the resulting decrease in the delivery speed can be particularly easy to reach. For example, the drafting system rollers can be switched to be non-driven by switching off an electric current from a drive. Due to frictional resistance, among other things in the bearings of the drafting system rollers, the speed is constantly reduced, so that the delivery speed of the sliver is also continuously reduced.

Zusätzlich oder alternativ können die Streckwerkswalzen auch mit Hilfe einer Bremsvorrichtung abgebremst werden. Eine konstante Bremswirkung führt dabei zu einer linearen Verringerung der Drehzahl der Streckwerkswalzen und somit zu einer linearen Reduktion der Liefergeschwindigkeit des Faserbandes.In addition or as an alternative, the drafting system rollers can also be braked with the aid of a braking device. A constant braking effect leads to a linear reduction in the speed of the drafting system rollers and thus to a linear reduction in the delivery speed of the sliver.

Ein kontinuierliches Abbremsen der Streckwerkswalzen und somit eine kontinuierliche Verringerung der Liefergeschwindigkeit hat auch noch einen weiteren Vorteil. Bei einem derartigen Verfahren wird das Faserband schonend abgebremst, so dass Fehlerstellen im Faserband so gut wie möglich verhindert werden.A continuous braking of the drafting system rollers and thus a continuous reduction in the delivery speed also has another advantage. In such a method, the fiber sliver is slowed down gently, so that flaws in the fiber sliver are prevented as well as possible.

Das kontinuierliche Abbremsen der Streckwerkswalzen hat auch gegenüber einem nicht-kontinuierlichen Abbremsen Vorteile für eine Mechanik des Streckwerks. Abruptes Abbremsen kann zu einem erhöhten Verschleiß beispielsweise von Lagern, Kupplungen zwischen einem Antrieb und den Streckwerkswalzen oder zu einer Überlastung der Elektronik führen, was bei einem kontinuierlichen Abbremsen weitestgehend verhindert wird.The continuous braking of the drafting system rollers also has advantages for the mechanics of the drafting system compared to non-continuous braking. Abrupt braking can lead to increased wear, for example of bearings, couplings between a drive and the drafting system rollers, or to overloading of the electronics, which is largely prevented with continuous braking.

Zusätzlich oder alternativ bietet es einen Vorteil, wenn während der Startphase die Liefergeschwindigkeit des Faserbandes kontinuierlich erhöht wird. Das kontinuierliche Erhöhen der Liefergeschwindigkeit des Faserbandes hat im Wesentlichen die gleichen Vorteile wie beim Verringern der Liefergeschwindigkeit. Mittels des kontinuierlichen Erhöhens wird das Faserband geschont, die Mechanik der Streckwerkswalzen und/oder des Antriebs wird weniger belastet und es kann einfacher durchgeführt werden.In addition or as an alternative, it offers an advantage if the delivery speed of the fiber sliver is continuously increased during the starting phase. Increasing the delivery speed of the sliver continuously has essentially the same advantages as reducing the delivery speed. By means of the continuous increase, the sliver is protected, the mechanics of the drafting system rollers and/or the drive are less stressed and it can be carried out more easily.

Vorteilhaft ist es ferner, wenn die Dünnstelle mittels einer Erhöhung eines gegenüber dem normalen Verziehen des Faserbandes angewandten Verzugs ausgebildet wird. Ein normales Verziehen weist beispielsweise einen Faktor sechs auf. Das heißt, ein aus dem Streckwerk auslaufendes Faserband ist um das Sechsfache gegenüber einem in das Streckwerk einlaufenden Faserband gestreckt. Um die Dünnstelle auszubilden, kann der Verzug beispielsweise um 25% bis 100% erhöht werden. Bevorzugt kann aber der Verzug auch um 50% erhöht werden. Beispielsweise bedeutet die 50%ige Erhöhung des Verzugs, dass, während die Dünnstelle erzeugt wird, der Verzug kurzfristig den Faktor neun aufweist. Nach dem Erzeugen der Dünnstelle wird der Verzug wieder auf den Wert von beispielsweise sechs zurückgestellt.It is also advantageous if the thin point is formed by means of an increase in a draft applied compared to the normal drafting of the sliver. For example, normal warping is a factor of six. This means that a fiber sliver leaving the drafting system is stretched six times compared to a fiber sliver entering the drafting system. In order to form the thin point, the distortion can be increased by 25% to 100%, for example. However, the delay can preferably also be increased by 50%. For example, the 50% increase in warpage means that while the thin spot is being created, the warpage is short term by a factor of nine. After the thin point has been created, the distortion is reset to the value of six, for example.

Des Weiteren ist es von Vorteil, wenn die Erhöhung des Verzugs durch eine Verringerung einer Drehzahl eines Walzenpaars der Streckwerkswalzen gegenüber einer Drehzahl eines diesem Walzenpaar in Lieferrichtung des Faserbandes nachgeordneten Walzenpaars der Streckwerkswalzen ausgebildet wird. Der Verzug wird somit dadurch erreicht, dass eine Drehzahl eines Walzenpaars, das in Lieferrichtung zuerst mit dem Faserband Kontakt aufweist, gegenüber einem nachfolgenden Walzenpaar verringert wird.Furthermore, it is advantageous if the increase in the delay is formed by reducing the speed of a pair of rollers of the drafting system rollers compared to a speed of a pair of rollers of the drafting system rollers arranged downstream of this pair of rollers in the delivery direction of the sliver. The delay is thus achieved in that a speed of a pair of rollers, which is in contact with the fiber sliver first in the delivery direction, is reduced compared to a subsequent pair of rollers.

Zusätzlich oder alternativ kann auch eine Drehzahl eines in Lieferrichtung des Faserbandes weiter hinten liegenden Walzenpaars gegenüber einem weiter vorne liegenden Walzenpaar erhöht werden, um die Erhöhung des Verzugs auszubilden.In addition or as an alternative, the speed of a pair of rollers located further to the rear in the delivery direction of the sliver can also be increased compared to a pair of rollers located further forward in order to increase the draft.

Beispielsweise kann die Drehzahl zumindest eines Walzenpaares der Streckwerkswalzen gegenüber einem danach angeordneten Lieferwalzenpaar verringert werden, um die Dünnstelle zu erzeugen. Das Lieferwalzenpaar kann beispielsweise zwischen dem Drehteller und dem Faserbandtrichter angeordnet sein.For example, the speed of at least one pair of rollers of the drafting system rollers can be reduced compared to a pair of delivery rollers arranged downstream, in order to produce the thin point. The pair of delivery rollers can be arranged, for example, between the turntable and the sliver funnel.

Ebenfalls stellt es einen Vorteil dar, wenn bei einem Erkennen einer Fehlfunktion der Strecke die Haltephase ausgeführt wird, wobei zuerst während der Haltephase die Dünnstelle erzeugt und anschließend die Strecke angehalten wird. Eine Fehlfunktion kann beispielsweise ein Faserbandwickel um eine Streckwerkswalze, ein Faserbandstau o.ä. sein, die eine Funktionsfähigkeit der Strecke verringert oder sogar verhindert. Wenn die Fehlfunktion erkannt wird, wird die Haltephase ausgeführt und während der Haltephase wird die Dünnstelle erzeugt, so dass nach dem Beheben der Fehlfunktion das Faserband an der Dünnstelle getrennt und wieder weitergeliefert werden kann.It is also an advantage if the stopping phase is carried out when a malfunction of the path is detected, with the thin point first being produced during the stopping phase and then the path being stopped. A malfunction can be, for example, a sliver winding around a drafting system roller, a sliver jam or the like, which reduces or even prevents the draw frame from functioning properly. If the malfunction is detected, the holding phase is carried out and the thin point is produced during the holding phase, so that after the malfunction has been eliminated the fiber sliver can be separated at the thin point and can be supplied again.

In einem zusätzlichen Erfindungsaspekt kann die Haltephase auch wie folgt ausgeführt werden. Zwischen eine Einzugsantrieb und Liefer- und/oder Ablageantrieb kann eine elektronische Kopplung aufgehoben werden. Der Einzugsantrieb kann aufgrund der Trägheitsverhältnisse wesentlich schneller abbremsen als wenn er mit dem Lieferantrieb und/oder dem Ablageantrieb synchron laufen muss. Ein schnellstmögliches Abbremsen des Einzugsantriebs reduziert in diesen Fällen beispielsweise die Wickeldicke, da weniger Material ins Streckwerk gefördert wird als bei normalem Halten. Zusätzlich oder alternativ kann auch während der Haltephase der Verzug wesentlich erhöht werden.In an additional aspect of the invention, the holding phase can also be carried out as follows. An electronic coupling can be canceled between an infeed drive and a delivery and/or deposit drive. Due to the inertia ratios, the feed drive can decelerate much more quickly than if it has to run synchronously with the delivery drive and/or the storage drive. In these cases, braking the infeed drive as quickly as possible reduces the lap thickness, for example, since less material is fed into the drafting system than with normal stopping. Additionally or alternatively, the delay can also be significantly increased during the holding phase.

Besonders vorteilhaft ist es auch, wenn nach dem Erzeugen der Dünnstelle ein in Lieferrichtung des Faserbandes nach der Dünnstelle angeordneter Endteil des Faserbandes manuell, mechanisch und/oder mittels Druckluft entfernt wird, so dass das Faserband an der Dünnstelle getrennt wird. Dabei kann der Endteil des Faserbandes noch in der Haltephase und/oder in der Startphase entfernt werden. Wenn das Endteil entfernt ist, bleibt ein Anfang des restlichen Faserbandes zurück, der mit der Dünnstelle beginnt. Dies ist vorteilhaft, da das dünnere Faserband im Bereich der Dünnstelle einfacher zwischen dahinterliegende Walzen und/oder leichter in einen dahinterliegenden Faserbandtrichter eingefädelt werden kann. Wird also gleich während der Haltephase und/oder der Startphase das Endteil entfernt, so dass nur noch zumindest ein Teil der Dünnstelle am Anfang des Faserbandes zurückbleibt, kann ein darauffolgendes Einfädeln leichter durchgeführt werden.It is also particularly advantageous if, after the thin point has been created, an end part of the sliver arranged after the thin point in the delivery direction of the sliver is removed manually, mechanically and/or by means of compressed air, so that the sliver is separated at the thin point. The end part of the sliver can still be removed in the holding phase and/or in the starting phase. When the tail is removed, there remains a beginning of the remaining sliver beginning with the thin spot. This is advantageous because the thinner sliver in the region of the thin point can be threaded more easily between rollers located behind and/or more easily into a sliver funnel located behind. If the end part is removed during the holding phase and/or the starting phase so that only at least part of the thin area at the beginning of the sliver remains, subsequent threading can be carried out more easily.

Von Vorteil ist es, wenn ein Faserbandfehler, beispielsweise ein Faserwickel des Faserbandes um eine Streckwerkswalze, eine Fehlerstelle im Faserband oder ein Faserbandstau manuell, mechanisch und/oder mittels Druckluft entfernt wird und anschließend die Dünnstelle, insbesondere in der Startphase, erzeugt wird. Dadurch kann der Anfang des Faserbandes, der noch durch die Dünnstelle verdünnt ist, leichter während der Startphase zwischen die Kalanderwalzen und/oder in den Faserbandtrichter eingefädelt werden.It is advantageous if a sliver defect, for example a fiber winding of the sliver around a drafting roller, a defect in the sliver or a sliver jam is removed manually, mechanically and/or by means of compressed air and the thin point is then produced, particularly in the starting phase. As a result, the beginning of the sliver, which is still thinned out by the thin point, can be threaded more easily between the calender rollers and/or into the sliver funnel during the starting phase.

Vorteilhaft ist es, wenn das Faserband in einem Bereich der Dünnstelle getrennt wird, so dass ein Anfangsteil des Faserbandes noch verdünnt ist. Dadurch kann dieser verdünnte Anfangsteil leichter in den Faserbandtrichter und/oder zwischen ein Walzenpaar eingefädelt werden. Beispielsweise kann der Anfangsteil auch leichter wieder zwischen die Streckwerkswalzen bzw. in das Streckwerk eingefädelt werden, falls das Faserband auch dem Streckwerk herausrutscht. Der Anfangsteil ist dabei an dem Ende des Faserbandes angeordnet, das im Streckwerk angeordnet ist.It is advantageous if the sliver is separated in a region of the thin point, so that an initial part of the sliver is still thinned. As a result, this thinned initial part can be threaded more easily into the sliver funnel and/or between a pair of rollers. For example, the initial part can also be more easily threaded back between the drafting system rollers or into the drafting system if the sliver also slips out of the drafting system. The initial part is arranged at the end of the sliver, which is arranged in the drafting system.

Zusätzlich oder alternativ ist es besonders von Vorteil, wenn dieses verdünnte Anfangsteil des Faserbandes mittels einer Luftströmung, insbesondere in der Haltephase und/oder Startphase, in einen in Lieferrichtung nach den Streckwerkswalzen angeordneten Faserbandtrichter und/oder zwischen das Kalanderwalzenpaar eingefädelt wird. Dazu weist die Strecke beispielsweise eine Luftdüse auf, die im Bereich des Faserbandtrichters angeordnet ist, so dass sie die Luftströmung erzeugt, die den Anfangsteil in den Faserbandtrichter einfädelt. Die Strecke kann dabei natürlich auch mehrere Luftdüsen aufweisen, so dass beispielsweise der Anfangsteil zusätzlich oder alternativ zwischen die Streckwerkswalzen des Streckwerks oder zwischen die Kalanderwalzen eingefädelt werden kann.Additionally or alternatively, it is particularly advantageous if this thinned initial part of the sliver is threaded by means of an air flow, in particular in the holding phase and/or starting phase, into a sliver funnel arranged in the delivery direction after the drafting system rollers and/or between the pair of calender rollers. For this purpose, the draw frame has an air nozzle, for example, which is arranged in the area of the sliver funnel so that it generates the air flow that threads the initial part into the sliver funnel. Of course, the route can also have several air nozzles have, so that, for example, the beginning part can be threaded additionally or alternatively between the drafting rollers of the drafting system or between the calender rollers.

Des Weiteren ist es von Vorteil, wenn nach dem Erzeugen der Dünnstelle das Faserband oder nach dem Trennen des Faserbandes an der Dünnstelle das Ende des Anfangsteils des Faserbandes weitergeliefert wird, bis die Dünnstelle oder das Ende des Anfangsteils des Faserbandes in einem Bereich eines Drehtellers, insbesondere in einem Bereich eines Auslaufs des Drehtellers, angeordnet ist. Der Weitertransport kann auch bevorzugt während der Haltephase und/oder der Startphase durchgeführt werden. Bei einem Kannenwechsel kann das Faserband somit am Drehteller getrennt werden und das Faserband kann daraufhin unmittelbar in eine neue leere Kanne eingeführt werden.It is also advantageous if, after the thin point has been created, the fiber sliver or after the fiber sliver has been separated at the thin point, the end of the initial part of the fiber sliver is delivered further until the thin point or the end of the initial part of the fiber sliver is in a region of a turntable, in particular in an area of an outlet of the turntable. The onward transport can also preferably be carried out during the holding phase and/or the starting phase. When a can is changed, the sliver can thus be separated at the turntable and the sliver can then be introduced directly into a new empty can.

Vorteilhaft ist es ferner, wenn nach und/oder während der Startphase der Strecke das Faserband mittels Sensoren vermessen wird. Die Sensoren können dabei beispielsweise an dem Kalanderwalzenpaar angeordnet und beispielsweise als Mikrowellensensor und/oder Lichtschrankensensor ausgebildet sein.It is also advantageous if the fiber sliver is measured by sensors after and/or during the starting phase of the drawing frame. The sensors can be arranged, for example, on the pair of calender rollers and can be designed, for example, as microwave sensors and/or light barrier sensors.

Zusätzlich oder alternativ ist es vorteilhaft, wenn eine Steuerung aufgrund der Messung der Sensoren bei erfolgreicher Startphase die Strecke weiterbetreibt. Zusätzlich oder alternativ kann die Steuerung bei einer fehlerhaften Startphase die Strecke, vorzugsweise nach einem erneuten Erzeugen der Dünnstelle, wieder anhalten.In addition or as an alternative, it is advantageous if a controller continues to operate the route based on the measurement of the sensors if the start phase is successful. Additionally or alternatively, in the event of an incorrect start phase, the controller can stop the segment again, preferably after the thin point has been generated again.

Vorgeschlagen wird ferner eine Strecke zum Verziehen eines Faserbandes mit einer Steuerung, mittels der zumindest Streckwerkswalzen eines Streckwerks gesteuert werden können.Also proposed is a draw frame for drafting a sliver with a controller, by means of which at least drafting system rollers of a drafting system can be controlled.

Erfindungsgemäß ist die Steuerung derart konfiguriert, dass die Strecke nach einem Verfahren gemäß einem oder mehreren der in der vorangegangenen und/oder nachfolgenden Beschreibung betrieben werden kann.According to the invention, the controller is configured in such a way that the route can be operated according to a method according to one or more of the descriptions above and/or below.

Weitere Vorteile der Erfindung sind in den nachfolgenden Ausführungsbeispielen beschrieben. Es zeigen:

Figur 1
eine schematische Ansicht einer Strecke mit einem Faserband, das durch ein Streckwerk läuft und in einer Kanne abgelegt wird,
Figur 2
ein Diagramm von Betriebsparametern der Strecke und
Figur 3
eine schematische Ansicht einer Strecke mit an der Dünnstelle getrenntem Faserband.
Further advantages of the invention are described in the following exemplary embodiments. Show it:
figure 1
a schematic view of a draw frame with a sliver that runs through a drafting system and is deposited in a can,
figure 2
a diagram of operating parameters of the track and
figure 3
a schematic view of a draw frame with a fiber sliver separated at the thin point.

Figur 1 zeigt eine schematische Ansicht einer Strecke 1, in welchem ein Faserband 2 verstreckt wird. Das Faserband 2 wird in einer Lieferrichtung L in einem Streckwerk 3 verstreckt und durch einen Drehteller 13 in einer Kanne 14 abgelegt. figure 1 shows a schematic view of a draw frame 1 in which a sliver 2 is stretched. The sliver 2 is stretched in a delivery direction L in a drafting system 3 and deposited in a can 14 by a turntable 13 .

Um das Faserband 2 in die Strecke 1 einzuleiten, weist diese ein Transportwalzenpaar 8 auf. In Lieferrichtung L nachgeordnet befinden sich zwei untere Umlenkstellen 9a, 9b sowie zwei obere Umlenkstellen 10a, 10b. Nach den Umlenkstellen 9a, 9b, 10a, 10b wird das Faserband 2 in das Streckwerk 3 eingeleitet, worin das Faserband 2 verzogen wird.In order to introduce the fiber sliver 2 into the drawing frame 1, this has a pair of transport rollers 8. Downstream in the delivery direction L are two lower deflection points 9a, 9b and two upper deflection points 10a, 10b. After the deflection points 9a, 9b, 10a, 10b, the sliver 2 is introduced into the drafting system 3, in which the sliver 2 is drawn.

Das Streckwerk 3 umfasst zum Verziehen ein Eingangswalzenpaar 4, ein Zwischenwalzenpaar 5 und ein Ausgangswalzenpaar 6. Das Eingangswalzenpaar 4 weist ferner eine Unterwalze 4a und eine Oberwalze 4b, das Zwischenwalzenpaar 5 weist eine Unterwalze 5a und eine Oberwalze 5b und das Ausgangswalzenpaar 6 weist eine Unterwalze 6a und zwei Oberwalzen 6b, 6c auf. Alle hier genannten Walzen können als Streckwerkswalzen 4, 5, 6 zusammengefasst werden. Die Oberwalzen 4b, 5b, 6b, 6c weisen alle eine Drehrichtung D auf (der Einfachheit halber ist die Drehrichtung D nur an der Oberwalze 4b gezeigt). Die Unterwalzen 4a, 5a, 6a weisen alle eine der Drehrichtung D entgegengesetzte Drehrichtung auf, so dass das Faserband 2 durch die Streckwerkswalzen 4, 5, 6 weitergeleitet wird.For drafting, the drafting system 3 comprises an input roller pair 4, an intermediate roller pair 5 and an output roller pair 6. The input roller pair 4 also has a lower roller 4a and an upper roller 4b, the intermediate roller pair 5 has a lower roller 5a and an upper roller 5b and the output roller pair 6 has a lower roller 6a and two top rollers 6b, 6c. All rollers mentioned here can be combined as drafting rollers 4, 5, 6. The top rollers 4b, 5b, 6b, 6c all have a direction of rotation D (for the sake of simplicity, the direction of rotation D is only shown on the top roller 4b). The lower rollers 4a, 5a, 6a all have a direction of rotation opposite to the direction of rotation D, so that the sliver 2 is passed on through the drafting system rollers 4, 5, 6.

Das Faserband 2 ist zwischen den Streckwerkswalzen 4, 5, 6 des Streckwerks 3 hindurchgeführt. Das Streckwerk 3 verzieht dabei das Faserband 2 dadurch, dass eine Rotationsgeschwindigkeit der Streckwerkswalzen 4, 5, 6 in Lieferrichtung L erhöht wird.The sliver 2 is passed between the drafting system rollers 4, 5, 6 of the drafting system 3. The drafting system 3 drafts the sliver 2 in that a rotational speed of the drafting system rollers 4, 5, 6 in the delivery direction L is increased.

Beispielsweise rotiert das Eingangswalzenpaar 4 mit einer Bezugsgeschwindigkeit. Das Zwischenwalzenpaar 5 rotiert mit einer höheren Rotationsgeschwindigkeit als die Bezugsgeschwindigkeit, so dass das Faserband zwischen dem Eingangswalzenpaar 4 und dem Zwischenwalzenpaar 5 gestreckt bzw. verzogen wird.For example, the input roller pair 4 rotates at a reference speed. The pair of intermediate rollers 5 rotates at a higher rotational speed than the reference speed, so that the sliver is stretched between the pair of input rollers 4 and the pair of intermediate rollers 5 .

Zusätzlich oder alternativ kann das Ausgangswalzenpaar 6 mit einer höheren Rotationsgeschwindigkeit rotieren als das Zwischenwalzenpaar 5. Dadurch wird das Faserband 2 auch durch diese beiden Walzenpaare 5, 6 verstreckt bzw. verzogen.Additionally or alternatively, the output roller pair 6 can rotate at a higher rotational speed than the intermediate roller pair 5. As a result, the fiber sliver 2 is also stretched or warped by these two roller pairs 5, 6.

Beispielsweise kann das Faserband 2 durch das Streckwerk 3 um einen Faktor sechs verzogen werden. Das heißt, dass das Faserband 2 bevor es in das Streckwerk 3 eintritt einen sechsmal höheren Querschnitt als nach dem Streckwerk 3 aufweist. Dadurch wird das Faserband 2 homogenisiert.For example, the sliver 2 can be drawn by a factor of six by the drafting system 3 . This means that the fiber sliver 2 has a cross section six times higher before it enters the drafting system 3 than after the drafting system 3 . As a result, the sliver 2 is homogenized.

Nachdem das verzogene Faserband 2 das Streckwerk 3 verlässt, wird es durch einen Faserbandtrichter 11 geleitet und nach dem Faserbandtrichter 11 von einem Kalanderwalzenpaar 12 vermessen. Mittels eines Drehtellers 13 wird das Faserband 2 schließlich in der Kanne 14 abgelegt.After the warped sliver 2 leaves the drafting system 3 , it is passed through a sliver funnel 11 and after the sliver funnel 11 is measured by a pair of calender rollers 12 . The sliver 2 is finally deposited in the can 14 by means of a turntable 13 .

Zwischen dem Ausgangswalzenpaar 6 und dem Faserbandtrichter 11 ist eine Dünnstelle 7 im Faserband 2 angeordnet, wobei es an der Dünnstelle 7 getrennt werden kann. Die Dünnstelle 7 wirkt als Sollbruchstelle. Die Dünnstelle 7 ist jedoch derart beschaffen, dass das Faserband 2 samt Dünnstelle 7 weitertransportiert werden kann. Beispielsweise kann die hier gezeigte und zwischen dem Ausgangswalzenpaar 6 und dem Faserbandtrichter 11 angeordnete Dünnstelle 7 bis in einem Bereich des Drehtellers 13 weitertransportiert werden. Erst wenn die Dünnstelle 7 am Drehteller 13, insbesondere an dessen Ausgang, angeordnet ist, kann das Faserband 2 getrennt werden, um beispielsweise einen Kannenwechsel durchzuführen.A thin point 7 in the sliver 2 is arranged between the pair of output rollers 6 and the sliver funnel 11 , and it can be separated at the thin point 7 . The thin point 7 acts as a predetermined breaking point. However, the thin point 7 is created in such a way that the sliver 2 together with the thin point 7 can be transported further. For example, the thin point 7 shown here and arranged between the pair of output rollers 6 and the sliver funnel 11 can be transported further to a region of the turntable 13 . The fiber sliver 2 can only be separated, for example in order to carry out a can change, when the thin point 7 is arranged on the turntable 13, in particular at its outlet.

Die Dünnstelle 7 kann dabei einen Querschnitt und eine Länge in Richtung des Faserbandes 2 aufweisen, die von einem Material und/oder der Beschaffenheit des Faserbandes 2 selbst abhängen. Beispielsweise kann die Dünnstelle 7 sehr dünn ausgebildet werden, wenn das Faserband 2 aus einem widerstandsfähigen Material ausgebildet ist. Dadurch ist immer noch die Transportfähigkeit des Faserbandes 2 gegeben. Das Faserband 2 kann aber auch leicht an der Dünnstelle 7 getrennt werden.The thin point 7 can have a cross section and a length in the direction of the sliver 2 that depend on a material and/or the nature of the sliver 2 itself. For example, the thin point 7 can be made very thin if the sliver 2 is made of a resistant material. As a result, the transportability of the sliver 2 is still given. However, the sliver 2 can also easily be separated at the thin point 7 .

Erfindungsgemäß wird die Dünnstelle 7 im Faserband 2 während einer Haltephase der Strecke 1 erzeugt. Zusätzlich oder alternativ kann die Dünnstelle 7 auch während einer Startphase der Strecke 1 erzeugt werden. Wenn die Dünnstelle 7 während der Haltephase und/oder Startphase erzeugt wird, ist die Produktivität der Strecke 1 erhöht, da auf den zusätzlichen Schritt für die Erzeugung der Dünnstelle 7 verzichtet werden kann. An der Dünnstelle 7 kann noch während der Haltephase und/oder Startphase das Faserband 2 getrennt werden. Außerdem ist durch das Erzeugen der Dünnstelle 7 und dem anschließenden Stoppen der Strecke 1 die Prozesssicherheit erhöht, da nicht mehr bei laufender Strecke 1 das Faserband an der Dünnstelle 7 getrennt und weiterverarbeitet wird. Dadurch wird eine Fehlerquelle vermieden.According to the invention, the thin point 7 in the sliver 2 is produced during a holding phase of the draw frame 1 . In addition or as an alternative, the thin point 7 can also be generated during a start phase of the section 1 . If the thin point 7 is produced during the holding phase and/or start phase, the productivity of the section 1 is increased since the additional step for producing the thin point 7 can be dispensed with. The fiber sliver 2 can still be separated at the thin point 7 during the holding phase and/or starting phase. In addition, the process reliability is increased by the production of the thin point 7 and the subsequent stopping of the draw frame 1, since the fiber sliver is no longer separated and further processed at the thin point 7 while the draw frame 1 is running. This avoids a source of error.

In einem weiteren Erfindungsaspekt kann die Dünnstelle 7 auch dadurch erzeugt werden, wenn ein in Lieferrichtung L des Faserbandes 2 weiter vorneliegendes Walzenpaar abgebremst wird, wohingegen die anderen Walzenpaare nicht oder schwächer abgebremst werden. Beispielsweise kann das Transportwalzenpaar 8 in einem Drehverhalten von den anderen entkoppelt werden. Das Transportwalzenpaar 8 kann auch stärker abgebremst werden, da es einfacher aufgebaut ist. Das Transportwalzenpaar 8 bremst beispielsweise durch ein geringeres Gewicht schneller ab. Wenn das Transportwalzenpaar 8 gegenüber beispielsweise den Streckwerkswalzen 4, 5, 6 schneller selbstständig abbremst wird, wird das Faserband 2 ebenfalls stärker gestreckt, so dass die Dünnstelle 7 ausgebildet wird. Die Dünnstelle 7 wird dabei in einem Bereich zwischen dem Transportwalzenpaar 8 und dem Streckwerk 3 ausgebildet. Dies hat den Vorteil, dass dadurch weniger Faserband 2 in das Streckwerk 3 gelangt. Dabei müssen die Streckwerkswalzen 4, 5, 6 nicht abgebremst werden. Sie können auch ganz normal weiter angetrieben werden, bis die Dünnstelle 7 beispielsweise bis zur gezeigten Position oder zum Drehteller 13 weitertransportiert ist.In a further aspect of the invention, the thin point 7 can also be produced if a pair of rollers further ahead in the delivery direction L of the fiber sliver 2 is braked, whereas the other pairs of rollers are not braked or are braked to a lesser extent. For example, the pair of transport rollers 8 can be decoupled from the others in terms of a rotational behavior. The pair of transport rollers 8 can also be braked to a greater extent because it has a simpler structure. The pair of transport rollers 8 decelerates more quickly, for example due to a lower weight. If the pair of transport rollers 8 is independently braked faster than, for example, the drafting rollers 4, 5, 6, the sliver 2 is also stretched more, so that the thin point 7 is formed. The thin point 7 is formed in an area between the pair of transport rollers 8 and the drafting system 3 . This has the advantage that less fiber sliver 2 reaches the drafting system 3 as a result. The drafting system rollers 4, 5, 6 do not have to be braked. They can also continue to be driven quite normally until the thin point 7 has been transported further, for example to the position shown or to the turntable 13 .

Um das Faserband 2 an der Dünnstelle 7 zu trennen, weist die Strecke 1 einen Faserbandtrenner 22 auf. Dieser kann mechanisch und/oder, wie in diesem Ausführungsbeispiel gezeigt ist, mittels einer Lüftdüse das Faserband 2 trennen. Im vorliegenden Ausführungsbeispiel erzeugt der Faserbandtrenner 22 zwischen dem Faserbandtrichter 11 und dem Kalanderwalzenpaar 12 eine Luftströmung, die auf das dort angeordnete Faserband 2 eine Kraft ausübt. Durch die Kraft reißt das Faserband 2 an der Dünnstelle 7, wobei der eine Teil des Faserbandes 2 durch den Faserbandtrichter 11 in Richtung des Faserbandtrenners 22 und der andere Teil des Faserbandes 2 zwischen den Kalanderwalzen 12 hervor ebenfalls in Richtung des Faserbandtrenners 22 gezogen wird.In order to separate the sliver 2 at the thin point 7 , the draw frame 1 has a sliver separator 22 . This can separate the sliver 2 mechanically and/or, as shown in this exemplary embodiment, by means of an air nozzle. In the present exemplary embodiment, the sliver separator 22 generates an air flow between the sliver funnel 11 and the pair of calender rollers 12, which exerts a force on the sliver 2 arranged there. The force tears the sliver 2 at the thin point 7, with one part of the sliver 2 being pulled through the sliver funnel 11 in the direction of the sliver separator 22 and the other part of the sliver 2 between the calender rollers 12, also in the direction of the sliver separator 22.

Der Faserbandtrenner 22 kann dabei das Faserband 2 auch mechanisch abreißen. Beispielsweise kann der Faserbandtrenner 22 einen Arm umfassen, der das Faserband 2 wegzieht und dadurch abreißt.The sliver separator 22 can also tear off the sliver 2 mechanically. For example, the sliver separator 22 can include an arm that pulls away the sliver 2 and thereby tears it off.

Außerdem kann der Faserbandtrenner 22 auch an einem anderen Bereich in der Strecke 1 angeordnet sein. Beispielsweise kann der Faserbandtrenner 22 auch direkt im Bereich der Dünnstelle 7, im Bereich des Streckwerks 3, im Bereich zwischen Kalanderwalzenpaar 12 und Drehteller 13 und/oder im Bereich zwischen Drehteller 13 und Kanne 14 angeordnet sein. Der Faserbandtrenner 22 kann beispielsweise dort angeordnet sein, wo sich die Dünnstelle beim Trennen bevorzugt befinden soll. Eine Trennung des Faserbandes 2 ohne Faserbandtrenner 22 ist beispielsweise dadurch möglich, dass ein Kannenwechsel eingeleitet wird, wenn sich die Dünnstelle 7 im Drehteller 13 oder im Bereich zwischen Drehteller 13 und Kanne 14 befindet. Das in der Kanne befindliche Faserband 2 wird dabei schneller von dem Drehteller 13 entfernt als Faserband 2 nachgeliefert wird, wodurch das Faserband 2 an der Dünnstelle 7 reißt.In addition, the sliver separator 22 can also be arranged in another area in the draw frame 1 . For example, the sliver separator 22 can also be arranged directly in the area of the thin point 7, in the area of the drafting system 3, in the area between the pair of calender rollers 12 and the turntable 13 and/or in the area between the turntable 13 and the can 14. The sliver separator 22 can be arranged, for example, where the thin point should preferably be located during separation. A separation of the sliver 2 without a sliver separator 22 is possible, for example, by initiating a can change when the thin point 7 is in the turntable 13 or in the region between the turntable 13 and the can 14 . The sliver 2 in the can is removed from the turntable 13 more quickly than the sliver 2 is subsequently supplied, as a result of which the sliver 2 tears at the thin point 7 .

Figur 2 zeigt ein Diagramm mit Betriebsparametern der Strecke 1 beispielhaft während der Haltephase. In dem Diagramm entspricht der x-Achse die Zeitachse. Die y-Achse entspricht zum einen Drehzahlwerte für zwei Drehzahlverläufe 16, 17 und zum anderen Werte für einen Verzug 15. figure 2 shows a diagram with operating parameters of route 1 as an example during the holding phase. In the diagram, the x-axis corresponds to the time axis. The y-axis corresponds to speed values for two speed curves 16, 17 on the one hand and values for a delay 15 on the other.

Die Haltephase weist einen Beginn 20 und ein Ende 21 auf. Während der Haltephase wird die Dünnstelle 7 erzeugt.The holding phase has a beginning 20 and an end 21 . The thin point 7 is generated during the holding phase.

In dem Diagramm ist des Weiteren der Verzug 15 dargestellt, welcher zumindest abschnittsweise im Wesentlichen konstant ist, insbesondere bis auf einen Zeitpunkt, an dem eine Verzugserhöhung 18 einsetzt. Der Verzug 15 im konstanten Bereich kann beispielsweise einen Wert von sechs aufweisen.The diagram also shows the warpage 15, which is essentially constant at least in sections, in particular up to a point in time at which a warpage increase 18 begins. The delay 15 in the constant range can have a value of six, for example.

Ferner sind in dem Diagramm die beiden Drehzahlverläufe 16 und 17 von beispielsweise zwei Walzenpaaren des Streckwerks 3 dargestellt. Im Diagramm sind die Drehzahlverläufe 16, 17 bis auf einen Zeitraum einer Drehzahlreduktion 19 deckungsgleich dargestellt. Dies bedeutet jedoch nicht zwangsläufig, dass die Drehzahlverläufe 16 und 17 auch den gleichen Wert aufweisen. Für den Drehzahlverlauf 16 kann eine andere Skala als für den Drehzahlverlauf 17 gelten.Furthermore, the two speed curves 16 and 17 of, for example, two pairs of rollers of the drafting system 3 are shown in the diagram. In the diagram, the speed curves 16, 17 are shown congruently except for a period of a speed reduction 19. However, this does not necessarily mean that the speed curves 16 and 17 also have the same value. A different scale than for the speed curve 17 can apply to the speed curve 16 .

Der Drehzahlverlauf 16 gilt jedoch für ein Walzenpaar, das in Lieferrichtung L des Faserbandes 2 (vgl. Figur 1) vor einem Walzenpaar mit dem Drehzahlverlauf 17 positioniert ist.However, the speed curve 16 applies to a pair of rollers that move in the delivery direction L of the sliver 2 (cf. figure 1 ) is positioned in front of a pair of rollers with the speed profile 17.

Beispielsweise gilt der Drehzahlverlauf 16 für das Eingangswalzenpaar 4 des Streckwerks 3 und der Drehzahlverlauf 17 für das Zwischenwalzenpaar 5 oder das Ausgangswalzenpaar 6. Zusätzlich oder alternativ kann der Drehzahlverlauf 17 auch für ein in Figur 1 nicht gezeigtes Lieferwalzenpaar gelten, das in Lieferrichtung L des Faserbandes 2 nach dem Streckwerk 3 angeordnet ist.For example, the speed curve 16 applies to the input roller pair 4 of the drafting system 3 and the speed curve 17 to the intermediate roller pair 5 or the output roller pair 6. Additionally or alternatively, the speed curve 17 can also be used for an in figure 1 not shown pair of delivery rollers apply, which is arranged in the delivery direction L of the sliver 2 after the drafting system 3.

Zusätzlich oder alternativ kann der Drehzahlverlauf 16 auch für das Zwischenwalzenpaar 5 und der Drehzahlverlauf 17 für das Ausgangswalzenpaar 6 und/oder das Lieferwalzenpaar gelten.Additionally or alternatively, the speed profile 16 can also apply to the intermediate roller pair 5 and the speed profile 17 to the output roller pair 6 and/or the delivery roller pair.

Nochmals zusätzlich oder alternativ kann der Drehzahlverlauf 16 auch für das Ausgangswalzenpaar 6 und der Drehzahlverlauf 17 für das Lieferwalzenpaar gelten.Again, additionally or alternatively, the speed curve 16 can also apply to the output roller pair 6 and the speed curve 17 to the delivery roller pair.

Um ferner den Verzug 15 auszubilden, rotiert das Ausgangswalzenpaar 6 schneller als das Zwischenwalzenpaar 5 und das Zwischenwalzenpaar 5 schneller als das Eingangswalzenpaar 4. Sind die Drehzahlen der Streckwerkswalzenpaare 4, 5, 6 konstant, ist auch der Verzug 15 des Faserbandes 2 konstant bei beispielsweise einem Faktor sechs.In order to further form the draft 15, the pair of output rollers 6 rotates faster than the pair of intermediate rollers 5 and the pair of intermediate rollers 5 faster than the pair of input rollers 4. If the speeds of the pairs of drafting rollers 4, 5, 6 are constant, the draft 15 of the sliver 2 is also constant, for example at one factor six.

Um die Dünnstelle 7 im Faserband 2 auszubilden, wird zumindest kurzzeitig die Verzugserhöhung 18 ausgebildet. Dazu wird, wie im Diagramm der Figur 2 gezeigt ist, eine Drehzahlreduktion 19 durchgeführt. Dazu wird beispielsweise die Drehzahl des Eingangswalzenpaares 4 zur Ausbildung der Verzugserhöhung 18 gegenüber der Drehzahl eines nachfolgenden Walzenpaares kurzzeitig abgebremst, wie anhand des unterhalb des Drehzahlverlaufs 17 angeordneten Drehzahlverlaufs 16 während der Drehzahlreduktion 19 dargestellt ist.In order to form the thin point 7 in the sliver 2, the draft increase 18 is formed at least briefly. To do this, as in the diagram of figure 2 is shown, a speed reduction 19 is carried out. For this purpose, for example, the speed of the input roller pair 4 is briefly decelerated to form the draft increase 18 compared to the speed of a subsequent roller pair, as is illustrated by the speed curve 16 arranged below the speed curve 17 during the speed reduction 19 .

Wie in Figur 2 außerdem dargestellt ist, sind die beiden Drehzahlverläufe 16 und 17 kontinuierlich fallend. In diesem Beispiel der Betriebsparameter der Strecke 1 sind die beiden Drehzahlverläufe 16 und 17 sogar linear fallend ausgebildet. Dies ist von besonderem Vorteil, da mittels derartiger Drehzahlverläufe 16 und 17 die Dünnstelle 7 schonend für das Faserband 2 erzeugt wird. Außerdem wird dadurch eine Mechanik des Streckwerks 3 geschont, weil abrupte Beschleunigungen der Streckwerkswalzen 4, 5, 6 sowie deren Antriebe weitestgehend vermieden werden.As in figure 2 is also shown, the two speed curves 16 and 17 are continuously falling. In this example of the operating parameters of section 1, the two speed curves 16 and 17 are even designed to fall linearly. This is of particular advantage since the thin point 7 is produced gently for the fiber sliver 2 by means of such speed curves 16 and 17 . In addition, this protects the mechanics of the drafting system 3 because abrupt accelerations of the drafting system rollers 4, 5, 6 and their drives are largely avoided.

Die linearen Drehzahlverläufe 16, 17 können beispielsweise erreicht werden, indem die Walzenpaare 4, 5, 6 und/oder das Lieferwalzenantrieb antriebslos geschaltet werden. Durch einen Reibungswiderstand werden die Walzen bis zum Stillstand abgebremst. Zusätzlich können die Walzen auch mit Hilfe einer Bremsvorrichtung abgebremst werden.The linear speed curves 16, 17 can be achieved, for example, by switching the roller pairs 4, 5, 6 and/or the delivery roller drive to a non-driven state. The rollers are braked to a standstill by frictional resistance. In addition, the rollers can also be slowed down with the help of a braking device.

Die Dauer der Haltephase, also die Zeitdifferenz zwischen Ende 21 und Beginn 20 der Haltephase, kann beispielsweise in einem Bereich zwischen 0,2 s und 4 s liegen. Die Haltephase kann aber auch eine Dauer zwischen 0,5 s und 2 s aufweisen.The duration of the holding phase, ie the time difference between the end 21 and the beginning 20 of the holding phase, can be in a range between 0.2 s and 4 s, for example. However, the holding phase can also have a duration of between 0.5 s and 2 s.

Für die Startphase kann ein ähnliches Diagramm wie in Figur 2 ausgebildet sein. Die Startphase weist lediglich kontinuierlich steigende Drehzahlverläufe auf. Auch hierzu ist es ein besonderer Vorteil, wenn die Drehzahlverläufe in der Startphase linear steigen.For the starting phase, a diagram similar to that in figure 2 be trained. The starting phase only shows continuously increasing speed curves on. Here, too, it is a particular advantage if the speed curves increase linearly in the starting phase.

Figur 3 zeigt eine schematische Ansicht einer Strecke 1 mit an der Dünnstelle 7 getrenntem Faserband 2. Der Einfachheit halber wird hier nur noch auf die wesentlichen Unterschiede zu den vorangegangenen Figuren eingegangen. figure 3 shows a schematic view of a drawing frame 1 with fiber sliver 2 separated at the thin point 7. For the sake of simplicity, only the essential differences from the previous figures will be discussed here.

Das Faserband 2 ist an der Dünnstelle 7 getrennt, wobei nur noch ein Anfangsteil 23 des Faserbandes 2 in der Strecke 1 angeordnet ist. Das Faserband 2 ist auch derart an der Dünnstelle 7 getrennt, dass am Anfangsteil 23 noch ein Abschnitt der Dünnstelle 7 zurückgeblieben ist. Der Anfangsteil 23 beginnt somit mit einem Teil der Dünnstelle 7. Dies ist dahingehend von Vorteil, da dadurch der Anfangsteil 23 des Faserbandes 2 einfacher in den Faserbandtrichter 11 und/oder zwischen die Kalanderwalzenpaar 12 eingefädelt werden kann.The fiber sliver 2 is separated at the thin point 7 , with only an initial part 23 of the fiber sliver 2 still being arranged in the section 1 . The sliver 2 is also separated at the thin point 7 in such a way that a section of the thin point 7 still remains at the beginning part 23 . The initial part 23 thus begins with part of the thin point 7. This is advantageous in that the initial part 23 of the sliver 2 can be threaded more easily into the sliver funnel 11 and/or between the pair of calender rollers 12.

Um den Anfangsteil 23 in den Faserbandtrichter 11 einzufädeln, weist dieses Ausführungsbeispiel einen Faserbandeinführer 24 auf. Dieser ist als Lüftdüse ausgebildet, die eine Luftströmung ausbildet und den Anfangsteil 23 durch den Faserbandtrichter 11 zu drücken. Zusätzlich oder alternativ kann der Faserbandeinführer 24 auch zwischen Faserbandtrichter 11 und dem Kalanderwalzenpaar 12 angeordnet sein, um das Anfangsteil 23 dort einzufädeln. Zusätzlich oder alternativ kann der Faserbandeinführer 24 auch zwischen Kalanderwalzenpaar 12 und Drehteller 13 angeordnet sein, um das Anfangsteil 23 in den Drehteller 13 einzuführen.In order to thread the initial part 23 into the sliver funnel 11, this exemplary embodiment has a sliver feeder 24. This is designed as an air nozzle that forms an air flow and pushes the beginning part 23 through the sliver funnel 11 . Additionally or alternatively, the sliver feeder 24 can also be arranged between the sliver funnel 11 and the pair of calender rollers 12 in order to thread the initial part 23 there. In addition or as an alternative, the sliver feeder 24 can also be arranged between the pair of calender rollers 12 and the turntable 13 in order to introduce the starting part 23 into the turntable 13 .

Zusätzlich oder alternativ kann der Faserbandeinführer 24 auch mechanisch ausgebildet sein.In addition or as an alternative, the sliver feeder 24 can also be designed mechanically.

Die vorliegende Erfindung ist nicht auf die dargestellten und beschriebenen Ausführungsbeispiele beschränkt. Abwandlungen im Rahmen der Patentansprüche sind möglich.The present invention is not limited to the illustrated and described embodiments. Modifications within the scope of the patent claims are possible.

BezugszeichenlisteReference List

11
Streckeroute
22
Faserbandsliver
33
Streckwerkdrafting system
44
Eingangswalzenpaarpair of input rollers
55
Zwischenwalzenpaarintermediate roller pair
66
Ausgangswalzenpaaroutput roller pair
77
Dünnstellethin spot
88th
Transportwalzenpaarpair of transport rollers
9a, 9b9a, 9b
untere Umlenkstellenlower deflection points
10a, 10b10a, 10b
obere Umlenkstellenupper deflection points
1111
Faserbandtrichtersliver funnel
1212
Kalanderwalzenpaarpair of calender rolls
1313
Drehtellerturntable
1414
Kannepot
1515
Verzugdefault
1616
Drehzahlverlaufspeed curve
1717
Drehzahlverlaufspeed curve
1818
Verzugserhöhungdefault increase
1919
Drehzahlreduktionspeed reduction
2020
Beginn der HaltephaseBeginning of the holding phase
2121
Ende der Haltephaseend of the holding phase
2222
Faserbandtrennersliver cutter
2323
Anfangsteilinitial part
2424
Faserbandeinführersliver feeder

Claims (15)

  1. A method for operating a draw frame (1), particularly for starting and/or stopping the draw frame (1), for example for exchanging a can and/or for subsequent threading of a sliver (2) into a sliver channel, a sliver (2) being guided between drafting system rollers (4, 5, 6) of a drafting system (3) drafting the sliver (2), and a thin part (7) being produced in the sliver (2) in order to be able to separate the sliver (2) at the thin part (7), characterized in that
    the thin part (7) in the sliver (2) is produced during a stopping phase, in which the drafting system rolls (4, 5, 6) are decelerated to a standstill, and/or a starting phase of the draw frame (1), in which the drafting system rolls (4, 5, 6) are accelerated from the standstill, and in that thereafter the sliver (2) is separated at the thin part (7).
  2. The method according to the preceding claim, characterized in that a length and/or a thickness of the thin part (7) is produced as a function of parameters, particularly of a fiber material, of the sliver (2), and/or of the drafting system (3).
  3. The method according to any one or more of the preceding claims, characterized in that the drafting system (3) is closed before or in the starting phase of the draw frame (1), particularly by means of a cover, and/or the drafting system (3) is opened after or in the stopping phase of the draw frame (1), particularly by means of a cover.
  4. The method according to any one or more of the preceding claims, characterized in that the starting phase has a duration between 0.5 s and 5 s, particularly between 1 s and 4 s, wherein during said duration the sliver (2) is accelerated to a feed velocity, particularly a maximum feed velocity, and/or that the thin part (7) is produced in a middle range of said duration.
  5. The method according to any one or more of the preceding claims, characterized in that the stopping phase has a duration between 0.2 s and 4 s, particularly between 0.5 s and 2 s, wherein during said duration the sliver (2) is decelerated from a feed velocity, particularly a maximum feed velocity, and/or that the thin part (7) is produced in a middle range of said duration.
  6. The method according to any one or more of the preceding claims, characterized in that during the stopping phase the feed velocity of the sliver (2) is reduced continuously, particularly linearly, and/or that during the starting phase the feed velocity of the sliver (2) is increased continuously, particularly linearly.
  7. The method according to any one or more of the preceding claims, characterized in that the thin part (7) is implemented by means of increasing a drafting (15) relative to the normal drafting of the sliver (2), particularly by between 25% and 100%, preferably by 50%.
  8. The method according to claim 7, characterized in that increasing the drafting (15) is implemented by reducing a speed (16, 17) of a roller pair of the drafting system rollers (4, 5, 6) relative to a speed (16, 17) of a roller pair of the drafting system rollers (4, 5, 6) downstream of the said roller pair in the feed direction (L) of the sliver (2), and/or that increasing the drafting (15) is implemented by increasing the speed (16, 17) of a roller pair of the drafting system rollers (4, 5, 6) relative to a speed (16, 17) of a roller pair of the drafting system rollers (4, 5, 6) disposed upstream in the feed direction (L) of the sliver (2).
  9. The method according to any one or more of the preceding claims, characterized in that when a malfunction of the draw frame (1) is detected, the stopping phase is implemented, wherein the thin part (7) is first produced during the stopping phase and then the draw frame (1) is stopped.
  10. The method according to any one or more of the preceding claims, characterized in that after the thin part (7) has been produced, an end part of the sliver disposed after the thin part (7) in the feed direction (L) of the sliver (2) is removed manually, mechanically, and/or by means of compressed air, particularly during the stopping phase and/or in the starting phase, so that the sliver (2) is separated at the thin part (7).
  11. The method according to any one or more of the preceding claims, characterized in that a sliver defect, such as a fiber wrapping of the sliver (2) about a drafting system roller (4, 5, 6), a defect in the sliver (2), or a sliver stall, is removed manually, mechanically, and/or by means of compressed air, and then the thin part (7) is produced, particularly in the starting phase.
  12. The method according to any one or more of the preceding claims, characterized in that the sliver (2) is separated in a region of the thin part (7), so that an end of a starting part (23) of the sliver (2) disposed in the drafting system is still thinned, and/or
    that said thinned end of the starting part (23) of the sliver (2) is threaded by means of an air flow into a sliver funnel (11) disposed after the drafting system rollers (4, 5, 6) in the feed direction (L) and/or between a calender roller pair (12), particularly in the stopping phase and/or in the starting phase.
  13. The method according to one of the claims 1 or 12, characterized in that the sliver (2), after producing the thin part (7), or the end of the starting part (23) of the sliver (2), after separating the sliver (2) at the thin part (7), is fed further until the thin part (7) or the end of the starting part (23) of the sliver (2) is disposed in a region of a rotary plate (13), particularly in a region of an outlet of the rotary plate (13), particularly in the stopping phase and/or in the starting phase.
  14. The method according to claim 12, characterized in that after and/or during the starting phase of the draw frame the sliver (2) is measured by means of sensors, particularly by means of sensors on the calender roller pair (12), by means of a microwave sensor and/or by means of a light barrier sensor, and/or that a controller continues to operate the draw frame (1) based on the measurement after a successful starting phase, and/or stops the draw frame (1) after a faulty starting phase, preferably after producing the thin part (7).
  15. A draw frame for drafting a sliver (2) and having a controller by means of which at least drafting system rollers (4, 5, 6) of a drafting system (3) can be controlled, characterized in that the controller is configured such that the draw frame (1) can be operated according to the method according to any one or more of the preceding claims.
EP17205448.8A 2016-12-16 2017-12-05 Method for operating a draw frame and a draw frame for drawing a sliver Active EP3336228B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102016124686.7A DE102016124686A1 (en) 2016-12-16 2016-12-16 Method for operating a route and a route for warping a sliver

Publications (2)

Publication Number Publication Date
EP3336228A1 EP3336228A1 (en) 2018-06-20
EP3336228B1 true EP3336228B1 (en) 2022-01-26

Family

ID=60582456

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17205448.8A Active EP3336228B1 (en) 2016-12-16 2017-12-05 Method for operating a draw frame and a draw frame for drawing a sliver

Country Status (3)

Country Link
EP (1) EP3336228B1 (en)
CN (1) CN108203851B (en)
DE (1) DE102016124686A1 (en)

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3807239C2 (en) * 1988-03-05 1996-08-29 Truetzschler Gmbh & Co Kg Device for depositing a sliver supplied by a spinning preparation machine
DE4100954A1 (en) * 1991-01-15 1992-07-16 Seydel Vermoegensverwaltung SEPARATION METHOD AND SEPARATING DEVICE FOR FIBER TAPES
DE4123205C2 (en) * 1991-07-10 1996-02-08 Spinnereimaschinenbau Leisnig Sliver separation on spinning preparation machines
DE59502635D1 (en) * 1994-05-13 1998-07-30 Rieter Ingolstadt Spinnerei Method for positioning a sliver end on a filled flat can and device for carrying it out
DE19548232C5 (en) 1995-03-11 2013-08-14 Trützschler GmbH & Co Kommanditgesellschaft Method and device for separating a sliver during can change at a distance
CN1090255C (en) * 1996-03-29 2002-09-04 里特机械公司 Detaching and piecing apparatus in combing machine
DE102004017441B4 (en) * 2004-04-08 2011-09-01 Rieter Ingolstadt Gmbh Process for fiber composite separation and spinning preparation machine
DE102005001995B9 (en) * 2005-01-15 2016-04-21 Rieter Ingolstadt Gmbh Spinning preparation machine with a control device
DE102006012335B4 (en) * 2006-03-17 2015-07-09 Rieter Ingolstadt Gmbh Nonwoven guiding device and textile machine
WO2007143866A1 (en) * 2006-06-16 2007-12-21 Maschinenfabrik Rieter Ag Fiber web separation at a web depositing device.
DE102008001696B4 (en) * 2008-05-09 2019-06-13 Rieter Ingolstadt Gmbh Spinning preparation machine with outlet regulation
DE102015105732A1 (en) * 2015-04-15 2016-10-20 TRüTZSCHLER GMBH & CO. KG Tape storage device for storing a sliver in a jug
CN204897017U (en) * 2015-07-21 2015-12-23 海安纺织机械有限公司 Energy -conserving disconnected strip device of automatic creeling of drawing frame

Also Published As

Publication number Publication date
CN108203851A (en) 2018-06-26
DE102016124686A1 (en) 2018-06-21
CN108203851B (en) 2022-07-05
EP3336228A1 (en) 2018-06-20

Similar Documents

Publication Publication Date Title
EP2573237B1 (en) Spinning machine and method for interrupting the production of thread on a spinning machine
EP1282510B1 (en) Method and device for cutting a laminate
DE69928559T2 (en) METHOD FOR WRAPPING BAND
EP2112258B1 (en) Device and method for winding a roving onto a bobbin
DE69311674T2 (en) Method and device for overlapping plastic bulges
EP2573238B1 (en) Spinning machine and method for interrupting the production of thread on a spinning machine
DE2503423A1 (en) METHOD AND DEVICE FOR OPENING A CABLE OF THREAD
DE4407964A1 (en) Method and device for the automatic placement and splicing of material webs on a tire building drum
EP1314668A2 (en) Apparatus for transporting web material
DE1905163A1 (en) Spinning process and device for carrying out the process
CH633587A5 (en) METHOD FOR STOPPING A OE-ROTOR SPINNING MACHINE AND OE-ROTOR SPINNING MACHINE FOR IMPLEMENTING THE METHOD.
DE102004017441B4 (en) Process for fiber composite separation and spinning preparation machine
EP3336228B1 (en) Method for operating a draw frame and a draw frame for drawing a sliver
EP3112507B1 (en) Spinning station of a spinning machine, spinning machine and method for operating a spinning station
EP2716170B2 (en) Device for transporting material in the form of strips or tape
DE69821989T2 (en) DEVICE FOR FIBER SEALING
DE19548232C5 (en) Method and device for separating a sliver during can change at a distance
EP1389603A1 (en) Method and device for splicing material webs
EP0799915B1 (en) Method and apparatus for the sliver regulation in a carding machine
EP1990298A1 (en) Method for operating a draw-in device
EP3739089B1 (en) Feeding device of a non-woven fabric formation system
EP0593587B1 (en) Fibre web separation in spinning works preparation machines
EP3154886B1 (en) Winding machine for producing lap rolls and method for winding slivers
DE10139216C2 (en) Folder for a folder
EP1726548A1 (en) Method and device for controlling the tension in a running web in a web processing device and device for processing a running web

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20181213

RBV Designated contracting states (corrected)

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20210208

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20211008

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

RAP3 Party data changed (applicant data changed or rights of an application transferred)

Owner name: RIETER INGOLSTADT GMBH

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 1465380

Country of ref document: AT

Kind code of ref document: T

Effective date: 20220215

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502017012509

Country of ref document: DE

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG9D

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20220126

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220126

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220126

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220126

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220526

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220426

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220126

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220126

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220126

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220426

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220126

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220126

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220427

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220126

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220526

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502017012509

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220126

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220126

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220126

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220126

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220126

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220126

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220126

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20221027

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220126

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230329

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20221205

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20221231

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20221205

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20221231

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20221205

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20221205

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20221231

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20221231

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20221231

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: TR

Payment date: 20231128

Year of fee payment: 7

Ref country code: IT

Payment date: 20231227

Year of fee payment: 7

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 1465380

Country of ref document: AT

Kind code of ref document: T

Effective date: 20221205

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20171205

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20221205

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220126

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20221205

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20231221

Year of fee payment: 7

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220126

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220126

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220126