EP0431436A2 - Procédé et dispositif de rattache automatique d'une mèche sur une bobine de mèche - Google Patents

Procédé et dispositif de rattache automatique d'une mèche sur une bobine de mèche Download PDF

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Publication number
EP0431436A2
EP0431436A2 EP90122529A EP90122529A EP0431436A2 EP 0431436 A2 EP0431436 A2 EP 0431436A2 EP 90122529 A EP90122529 A EP 90122529A EP 90122529 A EP90122529 A EP 90122529A EP 0431436 A2 EP0431436 A2 EP 0431436A2
Authority
EP
European Patent Office
Prior art keywords
roving
sleeve
piecing
spinning
finger
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Withdrawn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
EP90122529A
Other languages
German (de)
English (en)
Other versions
EP0431436A3 (en
Inventor
Hans-Jürgen Dipl.-Ing. Schönfelder
Matthias Dr.-Ing. Pfalz
Klaus Dipl.-Ing. Böhme
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.)
GROSSENHAINER TEXTILMASCHINENBAU GmbH
Original Assignee
GROSSENHAINER TEXTILMASCHINENBAU 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 GROSSENHAINER TEXTILMASCHINENBAU GmbH filed Critical GROSSENHAINER TEXTILMASCHINENBAU GmbH
Publication of EP0431436A2 publication Critical patent/EP0431436A2/fr
Publication of EP0431436A3 publication Critical patent/EP0431436A3/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Withdrawn legal-status Critical Current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
    • D01H7/00—Spinning or twisting arrangements
    • D01H7/02—Spinning or twisting arrangements for imparting permanent twist
    • D01H7/24—Flyer or like arrangements

Definitions

  • the invention relates to a method and a device for piecing a roving onto an empty roving tube in the context of the bobbin change of the type specified in the preamble of claim 1 or 3.
  • the roving sleeves usually have a piecing ring in the form of a zone of higher roughness close to their upper edge (cf. DE-PS 30 04 165).
  • Such roving bobbins are, however, only of limited suitability for ring spinning machines with automatic roving bobbin changes, because in the case of the almost expired roving bobbins removed from the bobbin creel of the ring spinning machine, residual windings can uncontrollably detach from the smooth sleeve surface and cause faults in the bobbin changing and / or spinning process.
  • roving bobbins are advantageous, the winding of which begins near the base of the tube.
  • such coils cannot be produced with a device according to DE-PS 30 04 165 for the reasons mentioned above.
  • a device in which, in order to overcome the aforementioned disadvantage, a press finger of the spinning wing, from which a fiber beard produced by tearing off the roving on the full bobbin protrudes, positioned in the vicinity of the sleeve base, the full roving bobbin subtracted from the bobbin holder in the vertical direction and an empty roving sleeve is rotatably attached to the bobbin holder.
  • the fiber beard is clamped between the tube foot and the bobbin holder, so that the winding of the roving tube begins on the tube base.
  • the positioning of the spinning wing makes it very difficult to pull off the full roving spool and put on the empty roving sleeve.
  • the clamping of the fiber beard is not safe in every case, which causes malfunctions and increases the pollution of the machine.
  • the invention has for its object to provide a method and a simple device for the automatic piecing of roving on roving sleeves, which allows the production of roving bobbins with winding beginning in the vicinity of the sleeve base without great effort.
  • Claim 2 further develops this method.
  • the procedure according to the invention ensures that the roving start guided in the press finger sheet is pushed out laterally from the contact area of the pressing finger on the roving sleeve during the retraction of the roving sleeve into the spinning-wing rotating area due to the rotation of the roving sleeve.
  • the pressing finger can move safely from the upper edge of the roving sleeve to the piecing position located in the vicinity of the sleeve base.
  • the subsequent reversal of the direction of rotation of the roving sleeve causes the roving beginning to be pushed again between the press finger blade and the surface of the roving sleeve and to be placed on the latter.
  • the first roving turns are automatically formed on the roving sleeve, which form the basis for the build-up of the roving bobbin winding.
  • an essential prerequisite for a trouble-free roving bobbin change on the ring spinning machine is given.
  • the method can be carried out without additional mechanical aids. It is only necessary to temporarily change the spool take-up drive.
  • FIG. 1 Only one spinning station of a wing spinning machine (flyer) for producing roving 1 is shown in FIG. 1.
  • This includes a spinning wing 2 with a rotatably arranged on a wing tube 3 and permanently, for example by a spring, with a radial force press finger 4, which has, inter alia, a horizontally extending press finger neck 5 and a press finger blade 6 arranged at the end thereof, and a rotary drive Coil holder 8, which is arranged on a vertically movable coil bench 7.
  • a roving sleeve 9 to be wound with roving 1, against which the pressing finger sheet 6 rests.
  • the roving sleeve 9 has a piecing ring 11 in the form of a zone of higher surface roughness in the vicinity of the sleeve base 10.
  • the roving 1 to be wound is guided in the wing tube 3 and is pressed against the roving sleeve 9 by the press finger sheet 6.
  • the bobbin bank 7 When changing the roving bobbin, the bobbin bank 7 is moved so far down that the full roving bobbins leave the rotating area of the spinning wings 2. They are removed from the bobbin receptacles 8 and replaced by empty roving sleeves 9. If the spool bank 7 is then moved up again for the purpose of piecing, so that the empty roving sleeves 9 move into the rotating area of the spinning wings 2, the pressing fingers 4 first come into contact with their surface at the upper edge of each roving sleeve 9 and slide on it below.
  • the process according to the invention remedies this phenomenon. It is illustrated by the diagram in FIG. 2 that shows the movement b of the pressing finger 4 with respect to the sleeve height h as a function of the sleeve revolutions n. Thereafter, during the retraction of the roving sleeve 9 into the piecing position, i.e. while the pressure finger sheet 6 moves on the surface of the roving sleeve 9 from the upper edge to the piecing ring 11, the roving sleeve 9 is rotated counter to the later direction of winding (in Fig. 2 by negative Sign of the sleeve revolutions indicated).
  • the circumferential speed of the sleeve surface should advantageously be greater than the average speed of the upward movement of the bobbin bank 7. This leads to the fact that the beginning 12 of the roving 1 clamped between the pressing finger sheet 6 and the sleeve surface is pressed out laterally as far as possible from this clamping area, that the vertical relative movement between the press finger sheet 6 and the roving sleeve 9 can no longer lead to the previously described effect (shown in full lines in FIG. 1).
  • the wing spinning machine also has a control device, not shown, which contains various sensors and processing elements for generating control signals which determine the successive sequence of the piecing processes.
  • the control device contains detection elements which detect the start and the end of a change of the roving sleeve, in particular its insertion movement into the operating position according to FIG. 1. Switching elements of the control device switch the rotary drive of the roving sleeve 9 in the opposite direction to normal spinning operation during the insertion of the roving sleeve 9 and expediently increase its speed during this insertion phase.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
EP19900122529 1989-12-07 1990-11-26 Method and apparatus for automatically piecing a roving to a roving bobbin Withdrawn EP0431436A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DD335337 1989-12-07
DD33533789A DD289781A5 (de) 1989-12-07 1989-12-07 Verfahren zum automatischen anspinnen eines vorgarnes an eine vorgarnhuelse

Publications (2)

Publication Number Publication Date
EP0431436A2 true EP0431436A2 (fr) 1991-06-12
EP0431436A3 EP0431436A3 (en) 1991-11-06

Family

ID=5614456

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900122529 Withdrawn EP0431436A3 (en) 1989-12-07 1990-11-26 Method and apparatus for automatically piecing a roving to a roving bobbin

Country Status (3)

Country Link
EP (1) EP0431436A3 (fr)
JP (1) JPH03180521A (fr)
DD (1) DD289781A5 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102002783A (zh) * 2010-12-09 2011-04-06 安徽华茂纺织股份有限公司 粗纱机锭翼压掌高低定规

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1085435A (en) * 1965-06-08 1967-10-04 Tmm Research Ltd Improvements relating to methods of and arrangements for doffing and donning bobbins in speedframes
US3380238A (en) * 1966-09-29 1968-04-30 Toyoda Automatic Loom Works Fly frame
DE3004165A1 (de) * 1980-02-05 1981-08-13 Zinser Textilmaschinen Gmbh, 7333 Ebersbach Vorspinnmaschine
ES259975Y (es) * 1981-08-11 1982-11-01 Tubo para bobinas de hilatura

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102002783A (zh) * 2010-12-09 2011-04-06 安徽华茂纺织股份有限公司 粗纱机锭翼压掌高低定规

Also Published As

Publication number Publication date
JPH03180521A (ja) 1991-08-06
DD289781A5 (de) 1991-05-08
EP0431436A3 (en) 1991-11-06

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