EP0469276A1 - Verfahren und Vorrichtung zum Wechseln von wenigstens einer vollen Vorgarnspule an einer Spinnmaschine - Google Patents

Verfahren und Vorrichtung zum Wechseln von wenigstens einer vollen Vorgarnspule an einer Spinnmaschine Download PDF

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Publication number
EP0469276A1
EP0469276A1 EP91110120A EP91110120A EP0469276A1 EP 0469276 A1 EP0469276 A1 EP 0469276A1 EP 91110120 A EP91110120 A EP 91110120A EP 91110120 A EP91110120 A EP 91110120A EP 0469276 A1 EP0469276 A1 EP 0469276A1
Authority
EP
European Patent Office
Prior art keywords
roving
beginning
guide surface
gripping device
bobbin
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Withdrawn
Application number
EP91110120A
Other languages
German (de)
English (en)
French (fr)
Inventor
Wolfgang Dipl.-Ing. Igel
Manfred Samp
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.)
Oerlikon Textile GmbH and Co KG
Original Assignee
Zinser Textilmaschinen 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 Zinser Textilmaschinen GmbH filed Critical Zinser Textilmaschinen GmbH
Publication of EP0469276A1 publication Critical patent/EP0469276A1/de
Withdrawn legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H15/00—Piecing arrangements ; Automatic end-finding, e.g. by suction and reverse package rotation; Devices for temporarily storing yarn during piecing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H69/00—Methods of, or devices for, interconnecting successive lengths of material; Knot-tying devices ;Control of the correct working of the interconnecting device
    • B65H69/06—Methods of, or devices for, interconnecting successive lengths of material; Knot-tying devices ;Control of the correct working of the interconnecting device by splicing
    • B65H69/061—Methods of, or devices for, interconnecting successive lengths of material; Knot-tying devices ;Control of the correct working of the interconnecting device by splicing using pneumatic means
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments

Definitions

  • the invention relates to a method for changing at least one full roving bobbin on a spinning machine, in which the roving beginning of a new roving bobbin is cut to a defined length and taken over by a gripping device which delivers the roving beginning to an insertion point of the spinning machine and which starts the roving beginning by means of a blown air stream holds on a guide surface of the gripping device, and a device for performing the method.
  • a gripping device is known (EP-A 0 213 962), which has a V-shaped guide groove, the groove base of which is designed as a guide surface.
  • a blowing opening from which a blown air stream is blown out, which is the roving start stops at the guide surface.
  • the roving beginning held on the guide surface is placed against the old roving still entering a drafting system of a spinning station of a spinning machine, so that it is drawn into the drafting system by the old roving.
  • the known method therefore presupposes that a roving residue from the old roving spool to be changed runs into the drafting system of the spinning station.
  • a roving bobbin change is preferably carried out by a movable maintenance device. Since it is difficult to ensure that the movable maintenance device is always at the relevant spinning position and can carry out a roving bobbin change process when there is just enough roving on the old roving bobbin, there is a risk that the maintenance device will find old roving bobbins that have run empty. so that automatic roving cannot then be carried out.
  • the invention has for its object to provide a method of the type mentioned, with which the security of the beginning of the roving is increased and with which an automatic starting is still possible when there is no incoming old roving.
  • This object is achieved in that the roving start is cut to such a length that it projects beyond the guide surface and that the blown air flow has a blowing direction essentially extending the guide surface.
  • This design ensures that the roving start of a full roving spool not only occupies a defined position and can lay against an old roving yarn that is still running in, but also that it protrudes from the gripping device to such an extent that it reaches one in the area of a pair of feed rollers
  • the drawing frame can be brought to a spinning station, so that the roving start is also drawn into the drawing frame when there is no longer any old sliver.
  • the roving start is sucked into a suction opening of the gripping device after the takeover, which is located in the region of the end of the guiding surface of the gripping device, and that the roving beginning is blown out of the suction opening during transfer to the insertion point and by means of the Blown air flow is aligned to the entry point.
  • This configuration ensures that the roving start is held at a defined location after the takeover and is protected against external influences. The roving start is thus at a defined point during the entire movement of the gripping device, so that it cannot be lost or damaged.
  • a device for changing at least one roving bobbin which contains a gripping device which receives the roving beginning of a new roving bobbin, which has been brought to a defined length on a cutting device, and which feeds an insertion point
  • the gripping head of which has a guide slot with a curved guide surface and one Has roving beginning holding blower nozzle on the guide surface, provided that the mouth of the blower nozzle is arranged in the region of the end of the guide surface and has a blowing direction directed essentially in an extension of the guide surface for the roving start projecting beyond the guide surface.
  • the introduction point is provided with an inlet funnel which has at least one outflow opening for blown-in blown air. This ensures that the blown-in blown air does not jam in the inlet funnel or flow back into the inlet funnel, which could prevent the roving start from being safely introduced.
  • the blowing nozzle is connected to an air supply line which can be connected to a compressed air source or a suction air source via a switching device.
  • a compressed air source or a suction air source via a switching device.
  • the blow nozzle picks up the roving start and holds it during the movement of the gripping device. If, on the other hand, the blower nozzle is connected to the compressed air source, it aligns the roving beginning in such a way that it can be taken over at the insertion point.
  • the spinning station of a ring spinning machine (10) shown in FIG. 1 contains a drafting device (11) into which a roving (12) runs, which is drawn to the desired yarn count in the drawing device (11).
  • the drawn roving runs over a thread guide (13) to a rotor running around a spinning ring (14), from which it reaches a bobbin tube (15) on which it is wound up with a bobbin winding.
  • the coil sleeve (15) is attached to a spindle (16) driven to rotate.
  • the spinning ring (14) is arranged on a ring bench (17) which carries out lifting and lowering movements to produce a cop winding.
  • the roving (12) is drawn off from a roving spool (18) which hangs on a hanger of a spool creel (19) during normal spinning operation.
  • a phase of a bobbin changing process is already shown, during which the nearly expired roving bobbin (18) is removed from the gate (19) by a serviceable maintenance device (20) that can be delivered to the relevant spinning station and is attached to a hanging holder along the ring spinning machine (10 ) running conveyor (21) has been handed over.
  • the bobbin changing process takes place in the manner known and described by DE-A 37 34 264.
  • the maintenance device (20) is designed as described in German patent applications P 39 11 764.2 and P 39 11 765.0.
  • a manipulator (22) first removed a new, full roving bobbin (23) from the transport device (21) and transferred it to an intermediate storage device (24) of the maintenance device (20).
  • the manipulator (22) then picked up the old roving spool (18) from the creel (19) and passed it on to the transport device (21). During this time, the roving (12) of the old roving spool (18) continues to run into the drafting system (11) via roving guides (25, 26).
  • the intermediate storage device (24) of the maintenance device (20) is designed as a preparation station, as has been described in patent application P 39 11 765.0.
  • the beginning of the roving of the new, full roving spool (22) is searched for by means of a suction nozzle (27) and kept ready at a defined point.
  • a gripping device (28) of the manipulator (22) is then delivered to this point, which takes over the roving start of the roving spool (23).
  • the manipulator (22) then picks up this roving spool (23), which it then feeds to the creel (19) and hangs in the hanger there.
  • the roving start begins, that is, the roving beginning is fed to the inlet area of the drafting unit (11).
  • This operation to be carried out by the gripping device (28) will be explained in more detail below.
  • the manipulator (22) then moves to the hanging holder of the gate (19), the gripping device (28) guiding the new roving around the roving rer (25,26) laying around.
  • the maintenance device (20) is designed so that it simultaneously carries out a roving bobbin change at several spinning positions, for example at six spinning positions.
  • Roving bobbins (18) of the gate (19) are assigned to these multiple spinning positions, i.e. Roving bobbins of the rear roving bobbin row.
  • the maintenance device (20) can carry out a bobbin change at several spinning positions which are supplied with roving by roving bobbins (29) of a front roving bobbin row.
  • the gripping device (28) of the manipulator (22) shown in FIGS. 2 and 3 corresponds in its basic structure to the gripping device which is shown and described in German patent application P 39 11 764.2.
  • the gripping device (28) has a swivel arm (30) which is pivotably mounted on a shaft (32) by means of swivel holders (31).
  • One of the jaws of the swivel holder (31) is provided with an external toothing (32) in the form of a circular arc, into which a driven gear wheel (33) engages, by means of which the swivel arm (30) can be pivoted.
  • the swivel arm (30) has a V-shaped guide groove (34) in the region of its gripping head, the bottom of which is designed as a curved guide surface (35) for the new roving.
  • An attachment (36) is attached to the gripping head and extends the curved guide surface (35).
  • a clamping lever (37) is pivotally mounted about a swivel axis (38), the lower end of which engages around a pin (40) with a fork-like recess (39).
  • the pin (40) is attached to a sleeve (41) with an internal thread, the internal thread of which engages in an external thread of a sleeve (43) connected to a shaft (42) in a rotationally fixed manner.
  • the threaded sleeve (41) By driving the shaft (42), the threaded sleeve (41) can be pushed back and forth with the pin (40) so that the clamping lever (37) performs clamping movements, as described in patent application P 39 11 764.2. He can clamp the new roving once, release the new roving in an intermediate position and clamp the old roving in the opposite position, so that this is separated after being attached.
  • the approach (36) of the gripping head of the gripping device (28) is provided with an air nozzle (44), the mouth of which lies on the side of the guide surface (35) assigned to the roving start and which is set back at an inclination with respect to the guide surface (35).
  • the air nozzle (44) is connected to an air supply pipe (46) via a flexible line (45).
  • the shape of the air nozzle (44) and its mouth are such that a blown air stream blown out by it is directed at least approximately in an extension of the guide surface (35), i.e. approximately parallel to the groove base of the V-shaped guide groove (34).
  • the gripping device (28) is fed from below in vertical movement to the roving of the full bobbin (23), which is held between the suction nozzle (27) and a roving guide (47).
  • the roving lies against the guide surface (35) of the gripping head of the gripping device (28). After closing the clamping lever (37) this roving is now held. Due to a relative movement between the suction nozzle (27) and the gripping device (28), the roving is then severed by pulling apart.
  • the clamping point of the clamping lever (37) is placed in such a way that a brush-like roving start is formed, which projects above the guide surface (35).
  • the air nozzle (44) is acted upon by suction air, so that the part of the roving beginning which projects beyond the guide surface (35) is sucked into the air nozzle (44), as shown in FIG. 4.
  • the roving start then remains sucked into the air nozzle (44), so that the gripping device (28) can also carry out very rapid movements if necessary, without the risk that the roving start will leave its position or even get caught on another component and be damaged .
  • the air nozzle (44) When the roving start is transferred to the drafting device (11) of the spinning station, the air nozzle (44) is pressurized with compressed air, so that the roving beginning is blown out of it again and kept stretched. The blowing direction of the air nozzle (44) continues the guide surface (35), as shown in Fig. 5.
  • the brush-like roving start can then be fed into the area of the peripheral surface of the draw-in rollers of a drafting system (11), so that it can rest against the draw-in surface running into the nip.
  • a system is provided on the top roller of the pair of intake rollers, which is provided with a rubber-like covering which has a high coefficient of friction.
  • the roving start can then be drawn into the drafting device (11) after the first clamping of the clamping lever (37) has been released. It can connect to the old roving (12) that is still coming in, or, if the old roving (12) has already run out, can be drawn in without this old roving (12).
  • the old roving (12) is separated, as has been described in the German patent application 39 11 746.2.
  • the clamping lever (37) is brought into a position that he clamps the old roving so that it is pulled apart and separated by the pair of intake rollers of the drafting device (11) that continues to run.
  • an inlet funnel (48) is generally connected upstream of the pair of intake rollers of a drafting system.
  • the inlet funnel (48) is provided with an outflow opening.
  • this outflow opening is an approximately V-shaped slot (49) with which the inlet funnel (48) is open to the peripheral surface of the opposite feed roller of the drafting system (11). This makes it possible for the blown air to flow out without the guidance of the incoming roving in the axial direction of the pair of feed rollers being impaired.
  • FIG. 7 schematically shows a pneumatic circuit with which the air nozzles (44) of several gripping devices of the maintenance device can be supplied with either suction air or compressed air.
  • a blower or a diaphragm compressor (50) can be connected to the air supply line (46), which leads to the air nozzles (44), both with its pressure side and with its suction side via a solenoid valve (51).
  • a filter (52) is arranged between the solenoid valve (55) and the air supply line (56). Since the filter (52) is essentially only required when there is a suction air flow at the air nozzles (44), this filter can also be arranged between the solenoid valve (51) and the vacuum connection of the blower or the diaphragm compressor (50).
  • a regulating valve (53, 54) is arranged in front of the solenoid valve in the suction line and in the pressure line, so that both the values of the blown air flow and the values of the suction can be set.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
EP91110120A 1990-08-01 1991-06-20 Verfahren und Vorrichtung zum Wechseln von wenigstens einer vollen Vorgarnspule an einer Spinnmaschine Withdrawn EP0469276A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4024358 1990-08-01
DE4024358A DE4024358A1 (de) 1990-08-01 1990-08-01 Verfahren und vorrichtung zum wechseln von wenigstens einer vollen vorgarnspule an einer spinnmaschine

Publications (1)

Publication Number Publication Date
EP0469276A1 true EP0469276A1 (de) 1992-02-05

Family

ID=6411411

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91110120A Withdrawn EP0469276A1 (de) 1990-08-01 1991-06-20 Verfahren und Vorrichtung zum Wechseln von wenigstens einer vollen Vorgarnspule an einer Spinnmaschine

Country Status (4)

Country Link
US (1) US5280699A (enrdf_load_stackoverflow)
EP (1) EP0469276A1 (enrdf_load_stackoverflow)
JP (1) JPH06316823A (enrdf_load_stackoverflow)
DE (1) DE4024358A1 (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1007310A3 (fr) * 1993-07-07 1995-05-16 Houget Duesberg Bosson Procede et dispositif pour rattacher deux fils dans un continu a filer.
CN109678003A (zh) * 2019-01-31 2019-04-26 武汉同力智能系统股份有限公司 一种金属丝缠绕自动打结装置及其打结方法
CN111661707A (zh) * 2019-03-06 2020-09-15 村田机械株式会社 压缩空气消耗量输出装置及自动络纱机

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4205164C1 (en) * 1992-02-20 1993-05-06 Zinser Textilmaschinen Gmbh, 7333 Ebersbach, De Process to eliminate yarn breakage in ring spinning machine - by sucking non-spun slubbing into yarn breakage suction pipe and attaching it to yarn
DE4205165C1 (en) * 1992-02-20 1993-06-24 Zinser Textilmaschinen Gmbh, 7333 Ebersbach, De Ring spinning frame - has electronic circuits in service unit to automatic ally piece up rovings to spun yarn with progressively improved performance
JP3240763B2 (ja) * 1993-07-26 2001-12-25 株式会社豊田自動織機 精紡機の粗糸替機
DE4416301A1 (de) * 1994-05-09 1995-11-16 Trw Repa Gmbh Verschluß für Sicherheitsgurte

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0213962A2 (en) * 1985-09-04 1987-03-11 Howa Machinery Limited Roving-piecing method in spinning frame and roving-piecing head for carrying out said method
EP0296546A1 (de) * 1987-06-24 1988-12-28 Maschinenfabrik Rieter Ag Aus Stapelfaser-Vorlage Fäden produzierende Spinnmaschine
EP0310871A1 (de) * 1987-10-09 1989-04-12 Zinser Textilmaschinen GmbH Verfahren und Vorrichtung zum automatischen Wechseln von Vorgarnspulen an einer Ringspinnmaschine

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3754718A (en) * 1971-08-30 1973-08-28 Abbott Machine Co End-finding means for yarn handling apparatus
ES8203999A1 (es) * 1981-03-10 1982-05-01 Pons Ubach Antonia Aparato automatico para la alimentacion de mecha en maquinascontinuas de hilar
DE3626268C2 (de) * 1986-08-02 1995-06-01 Zinser Textilmaschinen Gmbh Verfahren und Vorrichtung zum Einfädeln eines Vorgarns in ein laufendes Streckwerk
IT1220877B (it) * 1988-04-27 1990-06-21 Enzo Scaglia Procedimento di trasporto bobine con stoppino pre posizionato
DE3901770A1 (de) * 1989-01-21 1990-07-26 Palitex Project Co Gmbh Verfahren zum transport einer garnspule zu einer garnverarbeitenden maschine, insbesondere einer doppeldraht-zwirnmaschine sowie einrichtung zur durchfuehrung des verfahrens
DE3911764A1 (de) * 1989-04-11 1990-10-18 Zinser Textilmaschinen Gmbh Vorgarnspulenwechselwagen
DE3911765A1 (de) * 1989-04-11 1990-10-18 Zinser Textilmaschinen Gmbh Vorgarnspulenwechselwagen
EP0419968B1 (en) * 1989-09-28 1995-12-27 Maschinenfabrik Rieter Ag Manipulation of strand packages or strands in a spinning machine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0213962A2 (en) * 1985-09-04 1987-03-11 Howa Machinery Limited Roving-piecing method in spinning frame and roving-piecing head for carrying out said method
EP0296546A1 (de) * 1987-06-24 1988-12-28 Maschinenfabrik Rieter Ag Aus Stapelfaser-Vorlage Fäden produzierende Spinnmaschine
EP0310871A1 (de) * 1987-10-09 1989-04-12 Zinser Textilmaschinen GmbH Verfahren und Vorrichtung zum automatischen Wechseln von Vorgarnspulen an einer Ringspinnmaschine

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1007310A3 (fr) * 1993-07-07 1995-05-16 Houget Duesberg Bosson Procede et dispositif pour rattacher deux fils dans un continu a filer.
CN109678003A (zh) * 2019-01-31 2019-04-26 武汉同力智能系统股份有限公司 一种金属丝缠绕自动打结装置及其打结方法
CN109678003B (zh) * 2019-01-31 2021-04-20 武汉同力智能系统股份有限公司 一种金属丝缠绕自动打结装置及其打结方法
CN111661707A (zh) * 2019-03-06 2020-09-15 村田机械株式会社 压缩空气消耗量输出装置及自动络纱机
CN111661707B (zh) * 2019-03-06 2023-04-07 村田机械株式会社 压缩空气消耗量输出装置及自动络纱机

Also Published As

Publication number Publication date
US5280699A (en) 1994-01-25
DE4024358A1 (de) 1992-02-13
JPH06316823A (ja) 1994-11-15
DE4024358C2 (enrdf_load_stackoverflow) 1992-06-11

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