EP0310906A1 - Procédé et dispositif pour introduire une mèche dans un système d'étirage d'une machine textile - Google Patents

Procédé et dispositif pour introduire une mèche dans un système d'étirage d'une machine textile Download PDF

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Publication number
EP0310906A1
EP0310906A1 EP88115801A EP88115801A EP0310906A1 EP 0310906 A1 EP0310906 A1 EP 0310906A1 EP 88115801 A EP88115801 A EP 88115801A EP 88115801 A EP88115801 A EP 88115801A EP 0310906 A1 EP0310906 A1 EP 0310906A1
Authority
EP
European Patent Office
Prior art keywords
roving
drafting
textile machine
feed roller
end section
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP88115801A
Other languages
German (de)
English (en)
Other versions
EP0310906B1 (fr
Inventor
Walter Slavik
Arthur Wuermli
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.)
Maschinenfabrik Rieter AG
Original Assignee
Maschinenfabrik Rieter AG
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 Maschinenfabrik Rieter AG filed Critical Maschinenfabrik Rieter AG
Publication of EP0310906A1 publication Critical patent/EP0310906A1/fr
Application granted granted Critical
Publication of EP0310906B1 publication Critical patent/EP0310906B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
    • 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
    • D01H15/002—Piecing arrangements ; Automatic end-finding, e.g. by suction and reverse package rotation; Devices for temporarily storing yarn during piecing for false-twisting spinning machines

Definitions

  • the present invention relates to a method for introducing a roving according to the preamble of claim 1.
  • the invention also relates to a textile machine for carrying out the method according to the preamble of claim 6.
  • a pivotable suction tube first bringing the sliver end through a side slot of a sliver guide which is displaceably arranged to the side of the drafting device rollers and subsequently laterally next to the drafting device rollers, after which Sliver guide inserts the fuse between the feed rollers by sliding it.
  • the lateral introduction between the feed rollers can also be carried out by a beveled pressure arm. The manner in which the fuse automatically gets into the main delay area and could be properly transported by it is neither described nor indicated.
  • a roving or a sliver 2 is drawn or stretched from a roving spool 1 by means of a drafting device 3.
  • the stretched roving, now called thread 4 runs over a ring bench 6 and is wound up by a thread spool 7, also called a cop.
  • a fixed sensor 9 assigned to each spinning station monitors the thread 4 for presence.
  • Parallel to the longitudinal direction of the spinning stations arranged next to one another, at least one movable part of a robot 11, a robot carriage 12, can be moved on rails or on the floor and can perform various operating and / or monitoring functions.
  • the sensor 9 can, instead of being arranged individually, be placed on the carriage 12 for the successive monitoring of the threads at the various spinning positions.
  • the drafting system 3 is subdivided into a pre-drafting zone 15, where the roving is stretched slightly, and a main drafting zone 16, in which the fibers of the roving are pulled apart strongly and to the correct extent.
  • the pre-drafting zone 15 is delimited by at least one pair of feed rollers, i.e. an upper feed roller 17 and a lower feed roller 18 and a middle roller pair 21, which is usually provided with straps 22. The use of two feed roller pairs does not influence the method according to the invention.
  • the main drafting zone 16 extends between the middle pair of rollers 21 and a pair of delivery rollers 23.
  • the upper rollers of two adjacent spinning stations are combined in a common holder (not shown), which is only connected to one of the secondary spinning station and connected by means of a common axis 25 upper feed roller 20 is indicated in Fig. 2.
  • the free front end of the upper feed roller 17 is designated in FIG. 2 with the reference number 26.
  • the lower rollers are each driven by drive shafts extending along the spinning positions.
  • the drive shaft 27 (FIG. 2) accordingly drives the lower feed roller 18.
  • the sensor 9 placed at a suitable location between the pair of delivery rollers 23 and the ring bench 6 gives the robot 11 a signal in the absence of the thread 4, whereupon the carriage 12 travels to the relevant spinning station or drafting system 3.
  • a signal from sensor 9 is sent via line 28 to a clamping device upstream of drafting device 3 in the roving direction indicated by arrow 29, which in the embodiment according to FIG. 1 has an inlet funnel or sliver guide 30 is integrated.
  • a plug 32 is pressed in the direction of arrow 31 into the conically converging surface of the inlet funnel 30, by means of which movement the roving 2 is pinched.
  • the roving 2 is torn apart or separated immediately after the inlet funnel 30 by the pulling or pulling force exerted by the pair of rollers 17, 18 in the running direction of the roving 2. This point is the reference or receiving point 33, at which a pair of pliers or a gripper 34 can grip the end section 37 of the roving 2.
  • the gripper 34 is located at the end of a movable, articulated arm 38 of the carriage 12.
  • this gripper 34 After gripping the end section 37 at the reference point 33 and after the clamping device 30 has been unlocked or released by the robot 11, this gripper 34 carries a programmed three -dimensional movement, according to which the end section 37 is brought into a central delivery point 40 directly in front of the main drafting zone 16, in such a way that the end section 37 comes into the clamping line of the middle pair of rollers 21 and is thus grasped by the latter. With this movement of the gripper 34, the pre-drafting zone 15 is effectively bypassed, ie the roving section located between the pair of intake rollers 17, 18 and the middle pair of rollers 21 is not stretched.
  • the movement path of the gripper 34 bypasses the upper feed roller 17 laterally, ie it passes the free end 26, and at the same time leads through the detection area of a spacer device in the form of a hook 41 (FIGS. 2, 4), which keeps the roving at a distance from the free end 26 until it is caught by the middle pair of rollers 21 to avoid premature contact of the roving 2 with the feed roller pair 17, 18.
  • This position of the section of the roving located between the main draft zone 16 and the reference point 33 is identified by the reference symbol 2.1.
  • the horizontal position of the roving in position 2.1 should come as close as possible to the extension of the nip line of the feed roller pair 17, 18, but should definitely be below the axis of rotation of the upper feed roller 17.
  • the hook 41 in duplicate, is mounted on the upper bearing shell 42 of a bearing housing 43 for the lower feed roller 18 between two pairs of upper rollers 17, 20. Where there is no bearing housing 43, the hook 41 is mounted on some other support body.
  • An upstanding holding leg 44 holding the roving in position 2.1 can be folded over via a line 47 by means of an electrical or pneumatic pulse originating from the carriage 12 via a stationary contact 46.
  • the release impulse to the hook 41 takes place as soon as the end section 37 has been introduced into the main drafting zone 16, ie has been gripped by the middle pair of rollers 21, whereby the roving slides off the hook 41 from position 2.1 or is pulled off and by tightening, which is caused by the pulling or pulling force exerted by the main drafting zone 16, gradually reaches laterally between the upper 17 and lower feed rollers 18 without further actuations.
  • the tightening takes place between two fixed reference points.
  • One point of reference is the pinching in the middle pair of rollers 21 and the other reference point is formed by the inlet funnel 30 which has now been freed of the plug 32, in which inlet funnel the roving 2 is subjected to a reaction force caused by friction on the roving bobbin 1.
  • the tightening causes the roving 2 to be centered on the intended track in the drafting system 3, which is indicated by the reference number 2.3 in FIG. 2.
  • the top view of the raceway 2.3 is centered on the lower rollers, but is moved back and forth in parallel in a known manner by the movement of a traversing rod 50 to which the inlet funnel or sliver guide or the clamping device 30 is fastened.
  • the central delivery point 40 thus relates to this parallel area.
  • FIG. 2 shows a separate clamping device 54, known per se, placed in front of a feed hopper 52 in the roving running direction in front of an inlet funnel 52 shown in FIG. 3, with a fixed jaw 55 and a swiveling jaw 57 that can be moved according to an arrow 56
  • Inlet funnel 52 has a continuous longitudinal slot 59.
  • the upper part of the inlet funnel 52 adjacent to the longitudinal slot 59 is angled approximately tangentially at the end of the inlet and forms a protruding tab 60.
  • a sliver guide bent from wire such as e.g. shown in DE-OS 3532422, in which the leg ends are angled such that the roving 2 is inserted laterally, but cannot slide out during normal operation.
  • the gripper 34 grips the end section 37 at the reference point 33 immediately after the clamping device 54 and conveys it to the delivery point 40.
  • the roving 2 With a single movement, the roving 2 is brought into the initial position according to the dash line 2.1 through the longitudinal slot 59 of the inlet funnel 52, and this despite a kink in the roving 2 that usually occurs at the location of the inlet funnel 52.
  • the section of the roving 2 located between the main draft zone 16 and the reference point 33 at the clamping device 54 is tightened by means of an intermediate position designated by the reference number 2.2 into the centered position according to the track 2.3, the above-mentioned reference points again the middle pair of rollers 21 and Roving roll 1 are.
  • the articulated arm 38 is drawn with solid lines in FIG. 1 and as a hint in FIG. 2 in the position in which the end section 37 is gripped.
  • the dashed lines with the reference symbol 38.1 represent its emitting position.
  • FIG. 5 shows a stationary robot 63 which is assigned to each spinning station and which has a telescopic arm which is articulated on all sides. In the position capturing the end section 37, this arm is provided with the reference number 64 and in its releasing position with the reference number 64.1. The arm 64 is attached to the textile machine at a suitable point by means of a ball joint 67 above the drafting device 3.
  • the telescopic longitudinal movement and the swiveling movement can be controlled pneumatically or by means of racks.
  • the sensor 9 gives commands to the clamping device 54 and also activates the arm 64, so that a possibly provided movable robot can be relieved.
  • a mirror-image-programmed, three-dimensional movement is provided for an operation on the feed roller 20.
  • FIG. 5 in connection with FIG. 6 also serves to explain an alternative method.
  • This alternative provides for a two-dimensional movement of the gripper 34, so that a hinge pin now takes the place of the ball joint 67.
  • simplification can possibly be brought about if two successive method steps are provided in which only two-dimensional movement sequences take place.
  • the telescopic arm 64 guides the end section 37 during a first working step from the reference 33 into the delivery point 40 over the lateral surface 70 of the upper feed roller 17 and the inlet funnel 52 and thus remains in the roving 2 (in the clamping device 54) and thread 4 (at the delivery roller pair 23) formed, imaginary level. This position of the roving is identified by the reference symbol 2.4.
  • the second method step takes place immediately after the end section 37 has been grasped by the middle pair of rollers 21, by receiving a signal from the robot 63, a pushing device provided specifically for this purpose in the form of a swivel bracket 73, likewise only performing a two-dimensional movement between the Reference 33- and the delivery point 40 located Section of the roving 2 is moved laterally in the direction of an arrow 75.
  • the swivel bracket 73 has two curved leg ends 78, 79 which unite to form an articulated shaft part 80.
  • leg ends 78, 79 are such that the roving slides over them when they are moved in the direction of the arrow 75; in the emitting position 73.1 of the swivel bracket, the roving reaches a position 2.5 similar to the position 2.1.
  • the fact that two leg ends 78, 79 are provided has the purpose of simpler guidance, in particular if the roving should be pushed over the tab 60 at the same time.
  • the telescopic arm 64 can also take over the function of the swivel bracket 73 in that two subsequent two-dimensional movements are carried out by the telescopic arm.
  • the telescopic arm 64 and the swivel bracket 73 can also be placed on the carriage 12.
  • the articulated arm 38 can also alternatively perform a two-dimensional movement. It should therefore be obvious that many combinations are possible.
  • the gripper 34 engages directly after the clamping point or clamping device 30, 54, and its length in the roving direction is such that, with regard to the minimum stack length of the sliver or roving 2, there is a sufficiently long, free beard length around the tapered end section 37 to be captured by the middle pair of rollers 21.
  • FIG. 7 shows a preferred embodiment with a fixed or immovable sliding device in the form of a sliding bracket 84, which is attached to the traversing rod 50 in two embodiments, for example by means of screws 85 or the like.
  • the slide bracket 84 has an upstanding part 86 and a part 88 which extends obliquely forward from the upper end of the part 86.
  • the free end 89 is located at the free end 26 near the nip line of the feed rollers 17, 18.
  • the gripper 34 grips the end section 37 immediately after the inlet funnel 30 and brings the roving 2 into position 2.4, the roving 2 being located above the part 88.
  • the tensile force of the main draft zone now first pulls the roving 2 over the part 88 onto the free end 26 and then laterally between the feed rollers 17, 18.
  • the present invention is used in particular for the automatic restoration of the spinning operation in, for example, ring, nozzle and winding spinning machines after a thread break.
  • it can also be used for the automatic attachment of a sliver end of a new roving spool 1.
  • a standby position which detects the new sliver end can be used, which then functions as a reference point.
  • a sensor 9 can check the sliver flow from the roving spool 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
EP88115801A 1987-10-08 1988-09-26 Procédé et dispositif pour introduire une mèche dans un système d'étirage d'une machine textile Expired - Lifetime EP0310906B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH394687 1987-10-08
CH3946/87 1987-10-08

Publications (2)

Publication Number Publication Date
EP0310906A1 true EP0310906A1 (fr) 1989-04-12
EP0310906B1 EP0310906B1 (fr) 1991-07-03

Family

ID=4266885

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88115801A Expired - Lifetime EP0310906B1 (fr) 1987-10-08 1988-09-26 Procédé et dispositif pour introduire une mèche dans un système d'étirage d'une machine textile

Country Status (6)

Country Link
US (1) US4922704A (fr)
EP (1) EP0310906B1 (fr)
JP (1) JPH01118631A (fr)
DE (1) DE3863524D1 (fr)
ES (1) ES2025264B3 (fr)
IN (1) IN171166B (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0472962A1 (fr) * 1990-08-16 1992-03-04 Maschinenfabrik Rieter Ag Procédé et dispositif pour introduire une mèche dans un système d'etirage courant d'une machine textile, particulierement d'une metier a filer a anneaux
WO1996016209A1 (fr) * 1994-11-23 1996-05-30 Hollingsworth Saco Lowell, Inc. Condenseur et procede associe d'enfilage
EP0803595A2 (fr) * 1996-04-25 1997-10-29 Murata Kikai Kabushiki Kaisha Dispositif d'enfilage pour faisceau de fibres
DE10353779A1 (de) * 2003-11-18 2005-06-30 Rieter Ingolstadt Spinnereimaschinenbau Ag Verfahren zum Einführen von Faserband und Faserbandzuführung

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH685123A5 (de) * 1991-11-21 1995-03-31 Rieter Ag Maschf Streckwerk für eine Feinspinnmaschine, insbesondere Düsenspinnmaschine.
DE4231958A1 (de) * 1992-09-24 1994-03-31 Schlafhorst & Co W Verfahren und Vorrichtung zum Einlegen von Fadenenden in eine Fadenendenverbindungsvorrichtung
DE4243847A1 (de) * 1992-12-23 1994-06-30 Rieter Ingolstadt Spinnerei Vorrichtung zur Erfassung von Brüchen textiler Faserbänder vor einer Strecke

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3832839A (en) * 1973-10-24 1974-09-03 Parks Cramer Co Textile yarn spinning machine with roving interruption apparatus and slotted guides

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3327966A1 (de) * 1983-08-03 1985-02-21 Fritz 7347 Bad Überkingen Stahlecker Streckwerk fuer spinnereimaschinen
DE3406397C1 (de) * 1984-02-22 1985-07-11 SKF GmbH, 8720 Schweinfurt Luntensperrvorrichtung an Spinnmaschinen-Streckwerken
DE3606609A1 (de) * 1986-02-28 1987-09-03 Zinser Textilmaschinen Gmbh Luntenstopp-vorrichtung am streckwerk einer spinnmaschine

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3832839A (en) * 1973-10-24 1974-09-03 Parks Cramer Co Textile yarn spinning machine with roving interruption apparatus and slotted guides

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0472962A1 (fr) * 1990-08-16 1992-03-04 Maschinenfabrik Rieter Ag Procédé et dispositif pour introduire une mèche dans un système d'etirage courant d'une machine textile, particulierement d'une metier a filer a anneaux
WO1996016209A1 (fr) * 1994-11-23 1996-05-30 Hollingsworth Saco Lowell, Inc. Condenseur et procede associe d'enfilage
EP0803595A2 (fr) * 1996-04-25 1997-10-29 Murata Kikai Kabushiki Kaisha Dispositif d'enfilage pour faisceau de fibres
EP0803595A3 (fr) * 1996-04-25 1998-07-08 Murata Kikai Kabushiki Kaisha Dispositif d'enfilage pour faisceau de fibres
DE10353779A1 (de) * 2003-11-18 2005-06-30 Rieter Ingolstadt Spinnereimaschinenbau Ag Verfahren zum Einführen von Faserband und Faserbandzuführung

Also Published As

Publication number Publication date
IN171166B (fr) 1992-08-08
ES2025264B3 (es) 1992-03-16
EP0310906B1 (fr) 1991-07-03
DE3863524D1 (de) 1991-08-08
JPH01118631A (ja) 1989-05-11
US4922704A (en) 1990-05-08

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