EP4208593A1 - Verfahren zur durchführung eines automatischen kannenwechselvorgangs an einer spinnstelle einer spinnmaschine sowie spinnmaschine und verfahrbarer kannenwechsler - Google Patents
Verfahren zur durchführung eines automatischen kannenwechselvorgangs an einer spinnstelle einer spinnmaschine sowie spinnmaschine und verfahrbarer kannenwechslerInfo
- Publication number
- EP4208593A1 EP4208593A1 EP21815399.7A EP21815399A EP4208593A1 EP 4208593 A1 EP4208593 A1 EP 4208593A1 EP 21815399 A EP21815399 A EP 21815399A EP 4208593 A1 EP4208593 A1 EP 4208593A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sliver
- spinning
- changer
- station
- movable
- 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.)
- Withdrawn
Links
- 238000009987 spinning Methods 0.000 title claims abstract description 193
- 238000000034 method Methods 0.000 title claims abstract description 50
- 230000008569 process Effects 0.000 title claims abstract description 29
- 230000008859 change Effects 0.000 title abstract description 7
- 239000000835 fiber Substances 0.000 claims abstract description 32
- 238000004519 manufacturing process Methods 0.000 claims abstract description 5
- 238000012423 maintenance Methods 0.000 claims description 15
- 238000000926 separation method Methods 0.000 claims description 8
- 108090000623 proteins and genes Proteins 0.000 claims 1
- 238000007383 open-end spinning Methods 0.000 description 5
- 210000000056 organ Anatomy 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000010042 air jet spinning Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H9/00—Arrangements for replacing or removing bobbins, cores, receptacles, or completed packages at paying-out or take-up stations ; Combination of spinning-winding machine
- D01H9/005—Arrangements for replacing or removing bobbins, cores, receptacles, or completed packages at paying-out or take-up stations ; Combination of spinning-winding machine for removing empty packages or cans and replacing by completed (full) packages or cans at paying-out stations; also combined with piecing of the roving
- D01H9/008—Arrangements for replacing or removing bobbins, cores, receptacles, or completed packages at paying-out or take-up stations ; Combination of spinning-winding machine for removing empty packages or cans and replacing by completed (full) packages or cans at paying-out stations; also combined with piecing of the roving for cans
Definitions
- the present invention relates to a method for carrying out an automatic can changing process at a spinning station of a spinning machine by means of a movable can changer with a can gripper, in which a sliver from a sliver can positioned below the spinning position is delivered to the spinning position, with a remaining sliver length of the sliver being specified and when the predetermined remaining sliver length is reached, the sliver is severed during ongoing production at the spinning position.
- a can change is necessary in spinning machines, for example, as part of a lot change or when a spinning can is empty. It is not always possible to completely use up or spin the sliver of the old spinning can to be replaced before the can is changed.
- the sliver or the sliver can is usually replaced before the sliver can is empty, since this reduces the unproductive downtimes at the spinning stations compared to replacing them only after the sliver cans have been emptied.
- the sliver delivered from the sliver can to the spinning station must first be severed. After replacing the spinning can or the fiber material, the new sliver must continue to be fed to the spinning station.
- the sliver cans are filled with slivers of the same length and the can changing process is initiated when the sliver reaches a predetermined length.
- the drawing-in devices of the spinning positions are in DE 25 21 851 A1 centrally by means of a common drive is exaggerated.
- the fiber sliver is first cut through at each spinning station by means of a spinning station's own separating device with a clean cut directly in front of the draw-in device. The remaining sliver residue is spun, whereby the yarn is intended to form a thick point at its end through the smooth cut end of the fiber sliver.
- the object of the present invention is to propose a method that enables an improved automatic can changing process on a spinning machine. Furthermore, a corresponding spinning machine and a corresponding can changer are to be proposed.
- a sliver is delivered to the spinning station from a sliver can positioned below the spinning station.
- a residual sliver length of the sliver is specified and when the specified residual sliver length is reached, the sliver is severed during ongoing production of the spinning station.
- the sliver is clamped to the sliver can by a fixed clamp of the can changer, in particular the can gripper, and that the sliver can with the clamped sliver is removed from the spinning position by the can changer, thereby severing the sliver.
- the can changing process can be carried out particularly quickly, since the sliver is severed directly when the sliver can to be exchanged is exchanged or removed.
- a timing with organs of the spinning positions is not required for this.
- the unproductive idle times of the spinning positions can be further reduced as a result.
- no separating devices are required at the individual spinning positions. As a result, the spinning machine can be designed more simply.
- the sliver is clamped to the sliver can by a fixed clamp of the can changer, in particular the can gripper, and the sliver is additionally clamped by a movable clamp and is severed by a movement of the movable clamp.
- the movable clamp avoids uncontrolled tearing of the fiber sliver with the formation of thin areas in the remaining sliver that is being discharged, which can lead to yarn defects during further spinning. Due to the double clamping with the fixed and the movable clamp, the fiber sliver is severed at a reproducible point between the two clamps, so that the fiber sliver is not thinned out unacceptably.
- the spinning positions each having a feed device for feeding a sliver to be spun to the spinning position and a measuring device, by means of which a remaining sliver length of the sliver to be spun can be determined, and with at least one control unit, in which a residual sliver length of the fiber sliver can be specified, at which an automatic can changing process is to be initiated, it is proposed that the spinning station and/or the spinning machine has a control unit for carrying out the method described.
- the spinning machine can, for example, be designed as a rotor spinning machine, with the feed device for feeding the sliver containing a feed device.
- the method can also be used on an air-jet spinning machine.
- the feed device for feeding the sliver is a drafting system.
- the measuring device is in control connection with the control unit in order to initiate the automatic can changing process.
- the can changer in particular the can gripper, have a fixed clamp for clamping a sliver on the sliver can.
- the can changer can thereby carry out the can changing process completely independently without the need for coordination with organs of the spinning position.
- the can changer also has a movable clamp for severing the fiber sliver.
- the can changer can enable the fiber sliver to be separated in a reproducible manner without the formation of thin areas.
- the sliver can is first pulled out by the can changer from its position below the spinning station to a position in front of the spinning station and the sliver is clamped at a front edge of the sliver can facing the spinning station.
- the clamping point at which the fixed clamp clamps the sliver to the sliver can is thereby particularly close to the spinning point, so that the formation of a defined and reproducible separation point is thereby facilitated.
- the fixed clamp of the can gripper creates a defined separation point and the sliver does not tear in an uncontrolled manner, the remaining sliver can be spun out without major yarn errors occurring, particularly in the case of simpler applications.
- the yarn produced thus has a largely constant quality until it reaches the end of the residual sliver.
- a residual sliver remaining at the spinning station is disposed of, in particular sucked off. This is particularly advantageous when separating yarn lots with high quality requirements, since the point of separation does not get into the finished yarn.
- the discarded or sucked off residual sliver can be recycled separately, possibly together with other fiber residues, or used for another purpose.
- the remaining sliver is sucked off by means of a suction device of the spinning machine, in particular a suction device of the spinning station.
- a suction device of the spinning machine in particular a suction device of the spinning station.
- the spinning machine has a suction device, by means of which a residual sliver remaining at the spinning station after the sliver has been separated can be sucked off.
- each of the spinning positions has its own suction device preferably arranged.
- the suction device is preferably connected to an already existing vacuum channel of the spinning machine.
- a suction device is also conceivable which, although fixed to the machine, is assigned to a number of spinning stations.
- a suction arm could be arranged on each side of the section, which sucks off the slivers at all spinning positions on this side of the section.
- the suction device of the spinning machine is arranged in a mobile maintenance device. This is particularly advantageous when a movable maintenance device is required on the spinning machine anyway, for example to create the new sliver at the spinning station or to carry out a bobbin change.
- the residual sliver in order to dispose of the residual sliver, it is advantageous if the residual sliver is sucked off by means of a suction device of the movable can changer.
- the can changer it is correspondingly advantageous if it has a suction device for sucking off a residual sliver remaining at the spinning station after the fiber sliver has been severed.
- the residual slivers can thus advantageously be collected separately from other fiber waste from the spinning machine and sent for separate recycling.
- the can changer can carry out the can changing process independently without coordination with other organs of the workplace.
- the method also has advantages if, after the fiber sliver has been separated, the spinning device is stopped, the remaining sliver is fed to the stopped spinning device and sucked out of the spinning device.
- a separate suction device for disposing of the sliver is not required for this.
- the remaining sliver is fed to the idle spinning device by means of the feed device that is present anyway and sucked off via a suction point of the spinning device that is present anyway.
- the sliver is preferably broken up into individual fibers prior to suction.
- the fiber sliver does not have to be unthreaded from a sliver guide of the spinning station before suction or spinning, which also simplifies the can changing process.
- Figure 1 is an overview of a spinning machine in a schematic front view
- FIG. 2 shows a spinning position of a spinning machine with a can changer with a fixed clamp before an automatic can changing process in a schematic side view
- Figure 3 shows the spinning position of Figure 2 after clamping the sliver
- FIG. 4 shows the spinning position of FIG. 2 after the fiber sliver has been separated
- FIG. 5 shows the spinning position of FIG. 2 during suction of the sliver according to a first embodiment
- FIG. 6 shows the spinning position of FIG. 2 during suction of the sliver according to a second embodiment
- FIG. 7 shows a section of a spinning machine with a movable maintenance device with a suction device for sucking off the sliver in a schematic front view
- Figure 8 & 9 is a broken representation of a spinning station during the suction of the sliver according to a third embodiment in a schematic front view
- FIG. 10 shows a spinning position of a spinning machine with a can changer with a fixed and a movable clamp in front of a automatic can changing process in a schematic side view, as well as
- FIG. 11 shows the spinning position of FIG. 10 after the sliver has been severed.
- FIG. 1 shows a spinning machine 1 with a large number of spinning positions 2 arranged next to one another in a schematic front view.
- the Spinnstel len 2 are arranged in the usual way between two frames 11 on one or on both longitudinal sides of the spinning machine 1.
- Each of the spinning places 2 has in the usual way a feed device 5, by means of which a spinning device 6, a sliver 4 from a sliver can 3 is fed.
- the sliver cans 3 are placed below the spinning positions 2 in one or more rows.
- a yarn 8 is spun from the sliver 4 by means of the spinning device 6 and is wound onto a spool 7 in a manner that is also known by means of a winding device.
- the sliver 4 After leaving the sliver can 3 and before reaching the feeding device 5, the sliver 4 is guided through a sliver guide 9 to the spinning position 2, which is arranged below the feeding device 5 in the present example.
- a measuring device 17 is also arranged at each spinning station 2, by means of which a remaining sliver length of the sliver 4 still in the respective sliver can 3 can be ermit mined. This can be done indirectly, for example, by measuring the running length of the sliver 4 that has already been processed.
- the spinning machine 1 also has a movable maintenance device 12 with maintenance elements 24 which can carry out maintenance processes such as bobbin changing, cleaning processes or, depending on the design of the spinning machine 1, also piecing processes.
- the spinning positions 2 of the spinning machine 1 are preferably designed as at least partially self-sufficient spinning positions 2, which can carry out at least one piecing process independently.
- the spinning stations 2 can also be designed to be completely self-sufficient, so that a mobile maintenance device 12 is not absolutely necessary.
- the spinning machine 1 shown here has a vacuum channel 22 which extends along the spinning positions 2 and which is subjected to vacuum by a central vacuum source 23 .
- the negative spinning pressure can be provided by means of the negative pressure channel 22 .
- Various suction points and suction devices 19 (see FIGS. 5-8) of the spinning machine 1 can also be acted upon by means of the vacuum channel 22.
- the spinning machine also has at least one control unit 16 for controlling the spinning positions 2 and, if appropriate, the mobile maintenance device 12 .
- a control unit 16 as the central machine control of the spinning machine 1 can be seen.
- control units 16 can also be provided at the spinning positions 2, as shown here, in order to control the working elements of the spinning positions, eg the measuring device 17, the feed device 5, the spinning device 6 and others.
- Each spinning station 2 can have its own control unit 16 as a spinning station controller, or a control unit 16 can be provided as a spinning station controller for a group of spinning stations 2 .
- the spinning machine 1 can be designed as a rotor spinning machine, so that a feeding device is provided as the feeding device 5 .
- the spinning machine 1 could also be designed as an air spinning machine, in which case the feed device 5 would then be designed as a drafting system.
- FIGS. 1-10 A method for carrying out an automatic can changing process at a spinning station 2 of a spinning machine 1 by means of a movable can changer 14 with a fixed clamp 18 is now shown with reference to FIGS.
- FIG. 2 shows the spinning station 2 in a schematic side view.
- the sliver 4 is guided through the sliver guide 9 via the measuring device 17 before it reaches the feed device 5 and is fed to the spinning device 6 by it.
- the can changing process can be initiated, for example, as soon as the measuring device 17 registers that a predetermined residual sliver length has been reached.
- the desired remaining sliver length can be stored in the control unit 16 of the spinning machine 1 and/or the spinning station 2, for example.
- the measuring device 17 is in control connection with the control unit 16 .
- the can changer 14 is summoned, which carries a full sliver can 3b (shown in dot-dash lines) with it.
- the can changer 14 has a can gripper 15 for handling the sliver cans 3 and replacing the sliver can 3a (shown in solid lines) to be removed or replaced with the full sliver can 3b.
- the can changer 14 In the position shown in FIG. 2, the can changer 14 has already positioned itself in front of the relevant spinning station 2 and has gripped the sliver can 3 to be removed with its can gripper 15 .
- the can changer 14, in this case the can gripper 15, has a fixed clamp 18 for clamping the sliver 4 on the sliver can 3.
- the fixed clamp 18 is shown here in the open state.
- FIG 3 shows the spinning station 2 of Figure 2 after clamping the sliver of the 4.
- the can gripper 15 was used to remove the spinning can 3a and initially from its position below the spinning station 2, which is shown in Figure 2, in a Position in front of spinning position 2 pulled out.
- the front edge 20 of the sliver can 3 facing the spinning position 2 is now also easily accessible, since it is no longer located below the spinning position 2 .
- the sliver 4 was now simultaneously laid over the edge or the front edge 20 of the sliver can.
- the sliver 4 is now accessible to the fixed clamp 18.
- the sliver 4 is now clamped ge at the front edge 20 of the sliver can 3a.
- the sliver can 3a with the clamped sliver 4 can then be completely transferred to the can changer 14.
- FIG. 4 now shows the spinning position 2 of FIG. 2 after the sliver has been separated.
- the sliver can 3a with the sliver 4 clamped at its front edge 20 was now removed from the spinning station 2 by means of the can gripper 15 or completely transferred to the can changer 14 from the advanced position. Due to the movement of the can gripper 15, the sliver 4 was severed at the same time.
- the residual sliver 21 remaining at the spinning station 2 is now exposed and can be disposed of.
- the residual band 21 can be disposed of, for example, by spinning or also by suction by means of a suction device 19 (see FIG. 5).
- FIG. 5 now shows the spinning position of FIG. 2 during the suctioning off of the residual sliver 21 according to a first embodiment.
- the spinning station 2 is equipped with a suction device 19 belonging to the spinning station Mistake.
- the suction device 19 includes a suction opening which is arranged in the area of the fiber sliver 4 between the measuring device 17 and the feed device 5 .
- the suction device 19 is pressurized via the vacuum channel 22 . After the sliver 4 has been separated, the residual sliver 21 remaining at the spinning station 2 can be sucked off by means of the suction device 19 and is thereby preferably unthreaded from the sliver guide 9 at the same time.
- FIG. 6 shows another embodiment of a suction device 19 which is not arranged on the spinning station 2 but on the movable can changer 14 .
- the heel device 19 includes a suction arm, which can be designed telescopically, for example, and can be fed to the sliver 4 .
- the residual sliver 21 is preferably unthreaded from the sliver guide 9 directly by the suction process itself.
- FIG. 7 shows a further embodiment of a heel device 19.
- a section of a spinning machine 1 with a movable maintenance device 12 is shown in a schematic front view.
- the suction device 19 is provided as a maintenance element 24 in the movable maintenance device 12 .
- the suction device 19 includes a suction arm, which can be advanced to the remaining strip 21 .
- the suction arm can be transferred from a rest position shown in dot-dash lines to a suction position shown in solid lines.
- the remaining strap 21 is unthreaded from the strap guide 9 directly by suction by means of the suction device 19 .
- the rest of the tape 21 by means of a ge separate handling device (not shown), which both at the Spinning station 2 and can be arranged on the can changer 14 to unthread from the sliver guide 9.
- FIG. 8 shows the work station 2 in a broken representation in a front view immediately after the sliver 4 has been severed.
- the spinning device 6 is now shut down, but the feeding device 5 is operated further.
- the remaining sliver 21 at the spinning station 2 is thus fed to the stopped spinning device 6 by means of the feeding device 5 .
- the spinning device 6 has, in a manner known per se, a suction point 13 which is connected to the vacuum channel 22 at least temporarily for maintenance purposes, in the case of a rotor spinning device also during ongoing spinning operation.
- FIG. 9 shows the work station 2 immediately after the remaining strip 21 has been sucked off.
- the work station 2 shown here is designed as a work station of a rotor spinning machine.
- the feeding device 5, which in this case is designed as a feed device, is therefore also followed by an opening device 25, in which the sliver 4 is opened into individual fibers.
- the residual sliver 21 is thus also sucked off in the form of individual fibers. However, this is not absolutely necessary. So is also on an air spinning machine usually see the spinning device 6 ver with a suction point 13, through which the residual sliver 21 could be sucked off.
- FIGS. 10 and 11 also show a spinning position 2 of a spinning machine 1 with a can changer 14 with a fixed clamp 18 and a movable clamp 10 in a schematic side view.
- FIG. 10 shows the spinning station 2 or the sliver 4 before it is cut through.
- the sliver can 3a to be removed had been pulled from its position below the spinning station 2 to the position in front of the spinning station 2, the sliver 4 was now additionally clamped by means of a clamp 10 arranged movably on the can gripper 15.
- the sliver 4 is now separated not by moving or removing the sliver can 3a to be removed, but by moving the movable clamp 10. This is shown in FIG.
- the be moving terminal 10 with the sliver 4 clamped therein was doing a bit far away from the fixed terminal 18, whereby the sliver 4 was severed.
- a very clean, defined separation point can be produced in the fiber sliver 4 by means of this, which does not cause any significant yarn defects even when the remaining sliver 21 is spun out.
- a yarn with constant quality can be provided until the point of separation is reached, which then ends the spinning process.
- 3a sliver can to be removed 3b full sliver can
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Spinning Or Twisting Of Yarns (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102020131090.0A DE102020131090A1 (de) | 2020-11-24 | 2020-11-24 | Verfahren zur Durchführung eines automatischen Kannenwechselvorgangs an einer Spinnstelle einer Spinnmaschine sowie Spinnmaschine und verfahrbarer Kannenwechsler |
PCT/EP2021/081570 WO2022112025A1 (de) | 2020-11-24 | 2021-11-12 | Verfahren zur durchführung eines automatischen kannenwechselvorgangs an einer spinnstelle einer spinnmaschine sowie spinnmaschine und verfahrbarer kannenwechsler |
Publications (1)
Publication Number | Publication Date |
---|---|
EP4208593A1 true EP4208593A1 (de) | 2023-07-12 |
Family
ID=78806478
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP21815399.7A Withdrawn EP4208593A1 (de) | 2020-11-24 | 2021-11-12 | Verfahren zur durchführung eines automatischen kannenwechselvorgangs an einer spinnstelle einer spinnmaschine sowie spinnmaschine und verfahrbarer kannenwechsler |
Country Status (5)
Country | Link |
---|---|
US (1) | US20230416951A1 (de) |
EP (1) | EP4208593A1 (de) |
CN (1) | CN116472370A (de) |
DE (1) | DE102020131090A1 (de) |
WO (1) | WO2022112025A1 (de) |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2521851A1 (de) | 1975-05-16 | 1976-11-25 | Schlafhorst & Co W | Verfahren und vorrichtung zum wechseln der faserbandbehaelter einer spinnmaschine |
DE2646313C2 (de) * | 1976-10-14 | 1986-07-03 | W. Schlafhorst & Co, 4050 Mönchengladbach | Verfahren und Vorrichtung zum Auswechseln von Faserbandkannen |
DE3802414A1 (de) | 1988-01-28 | 1989-08-10 | Fritz Stahlecker | Spinnmaschine mit einer vielzahl von nebeneinander angeordneten spinnstellen |
DE3928648A1 (de) * | 1989-08-30 | 1991-03-07 | Fritz Stahlecker | Anlage mit einer oder mehreren spinnmaschinen und mit wenigstens einem wechselwagen zum wechseln von kannen |
JPH0585772U (ja) | 1991-05-20 | 1993-11-19 | 村田機械株式会社 | スライバー継ぎロボット |
DE4428580A1 (de) * | 1994-08-12 | 1996-02-15 | Schlafhorst & Co W | Verfahren und Vorrichtung zur Handhabung des Faserbandes bei der Reinigung einer Offenend-Spinnstelle |
DE102020110991A1 (de) * | 2020-04-22 | 2021-10-28 | Maschinenfabrik Rieter Ag | Verfahren zum Trennen eines aus einer Spinnkanne an eine Spinnstelle einer Spinnmaschine gelieferten Faserbandes sowie Spinnmaschine |
-
2020
- 2020-11-24 DE DE102020131090.0A patent/DE102020131090A1/de active Pending
-
2021
- 2021-11-12 CN CN202180074952.6A patent/CN116472370A/zh active Pending
- 2021-11-12 US US18/254,050 patent/US20230416951A1/en active Pending
- 2021-11-12 WO PCT/EP2021/081570 patent/WO2022112025A1/de active Application Filing
- 2021-11-12 EP EP21815399.7A patent/EP4208593A1/de not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
WO2022112025A1 (de) | 2022-06-02 |
CN116472370A (zh) | 2023-07-21 |
US20230416951A1 (en) | 2023-12-28 |
DE102020131090A1 (de) | 2022-05-25 |
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