US3899870A - Spool changing device for spinning machines - Google Patents

Spool changing device for spinning machines Download PDF

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Publication number
US3899870A
US3899870A US421218A US42121873A US3899870A US 3899870 A US3899870 A US 3899870A US 421218 A US421218 A US 421218A US 42121873 A US42121873 A US 42121873A US 3899870 A US3899870 A US 3899870A
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United States
Prior art keywords
spindle
yarn
package
cutting
movable support
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Expired - Lifetime
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US421218A
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English (en)
Inventor
Siegfried Roller
Gustav Idler
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.)
C EUGEN MAIER METALVERARBEITUNG GmbH
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C EUGEN MAIER METALVERARBEITUNG GmbH
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Expired - Lifetime legal-status Critical Current

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    • 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

Definitions

  • the invention relates to a package-changing apparatus with a yarn cutter device for spinning and twisting machines and the like.
  • Package-changing apparatuses for spinning machines are already known per se. They take off the full wound packages and in their place set an empty tube upon the liberated spindle in each case. Reference to a package hereinafter is to be taken as a yarn tube on which yarn is wound. 2. Description of the Prior Art Package-changing apparatuses are preferably arranged symmetrically, so that full packages on two parallelarranged spindle rows of a spinning machine can be taken off at the same time, by a left and a right hand unit.
  • a connecting piece between the removed package and the spindle is cut off, automatically as a rule, with the aid of a suitable device. Of course it can also be cut through by hand.
  • the cutting operation must take place before a new empty yarn tube is fitted.
  • the turns situated on the spindle to unwind. Naturally this is the greater, the more intense is the natural tension of the yarn.
  • the problem of the present invention concerns the provision of a package-changing apparatus with a yamcutter device for spinning machines which guarantees the secure holding of the yarn at the beginning of a winding operation onto a new tube, irrespective of the physical properties of the yarn.
  • a package-changing apparatus for spinning and twisting machines in which packages in the form of a fully wound yarn tube are removed from a spindle and a fresh yarn tube placed on the spindle, the apparatus comprising movable support means arranged to move past the spindle, cutting means located on said movable support means and retaining means movably mounted on the movable support means in a position located between the cutting means and the spindle so that upon removal of a package from the spindle the end of the yarn on the package is held by the retaining means prior to the cutting of the yarn, and after cutting of the yarn turns of yarn formed on the spindle are held in position thereon by the retaining means until a new yarn tube is placed on the spindle.
  • the retaining means ensures the maintenance of the necessary tension on the turns about the spindle and thus prevents the yarn from unwinding or falling down the spindle, until a new empty tube is fitted on the spindle. As soon as the next tube is fitted, the retaining effect can be removed, or the firmly held yarn end can be cut through or broken off.
  • the retaining means comprises a hard brush, a soft-brush, a felt-like or pad-like element, a roughened retaining element surface or the like, over which the yarn end is guided. If hereinafter there is reference only to a brush, this should not be understood to be limitative. Upon removal of the full package the connecting yarn piece is drawn through the bristles and held fast by these even after the cutting off of the full package.
  • the yam end is drawn out of the bristles by the fitting on of the new tube.
  • the retaining force is dependent both upon the nature of the brush and upon the bristle material and the depth of penetration of the yarn end into the brush. Optimum retention conditions can readily be obtained for the respective spun material by suitable selection of these components.
  • a further feature of the invention is characterised in that in an apparatus which moves past the respectively associated spindle or spindles during the changing operation, the retaining element or elements of the retaining means moves or move oppositely to the movable support means or changing apparatus, and especially at approximately the same speed as the latter.
  • the firmly held yarn end remains in each case approximately in the same position, and thus the retaining forces are also substantially constant.
  • the retaining means is connected with an endless band, chain, belt or the like having a plurality of retaining members, bristles, which is especially guided over two reversing pulleys or the like arranged with mutual spacing, at least one of the reversing pulleys being formed at the same time as drive pulley.
  • the bristles can be inserted directly into the endless band, formed for example as V-belt, or a corresponding flexible brush can be firmly connected with this belt.
  • the use of a bristle brush firstly involves an especially good retaining effect, and furthermore this occasions only relatively low purchase costs.
  • the brush has a long life, and furthermore a brush hardly changes due to use, in contrast for example with a felt-type retaining element which may consolidate in the course of time and thus render more difficult the penetration of the yarn end.
  • a further advantageous development of the invention consists in that the reversing pulleys are placed one behind the other approximately in the direction of movement of the changing apparatus, so that the bristles too, seen in this direction, extend over a certain distance.
  • Another feature of the invention consists in that the axes of the reversing pulleys are directed approximately perpendicularly of the axes of the spindles and of the direction of movement of the changing apparatus, and the bristles are placed approximately in the plane defined by the endless band. This conformation is distinguished by especially small space requirements for the apparatus.
  • the retaining run does not necessarily have to extend in a horizontal plane.
  • the retaining elements especially bristles
  • a cleaning means is provided for the retaining device, especially the bristles. It can be made for example in the style of a comb or likewise a brush, which can then be cleaned, without the necessity of halting the changing apparatus for this purpose.
  • the fibres can also be removed by suction.
  • the retaining means is made as a pneumatic suction device.
  • the free yarn end is sucked up in a suitable manner and held fast by suction action.
  • This device is distinguished by particular simplicity and thus low manufacturing costs.
  • a suction generator is available in spinning machinery.
  • the suction device possesses a suction pipe with a suction slot having a spiral course. In this case that the yarn end to be held fast is also guided over this suction slot and can penetrate into the latter if there is a sufficiently great suction force.
  • the suction pipe In a package-changing apparatus which moves past the respectively associated spindle or spindles during the changing operation, it is very advantageous for the suction pipe to be rotatably mounted and for the speed of rotation and the speed of movement of the changing apparatus to be adapted to one another in such a way that the spindle participating in the changing operation always has allocated to it a part of the slot which is facing approximately upwards. Accordingly this suction pipe has a certain back-conveying effect which ensures that the end to be held fast always remains at approximately the same position relative to the spindle. It should also be pointed out of course that the firmly held yarn end does not necessarily have to be sucked in from above, but suction may be applied practically from any direction. With a view to automation it is however advantageous if the suction opening faces upwards at the position over which the yarn end passes.
  • the suction device has a pipe provided with bores or the like, which is mounted on and is displaceable with a package-changing apparatus.
  • a pipe formed for example from a sieve or the like, rotation is superfluous even with a changing apparatus which moves on during the changing operation.
  • a cleaning device associated in each case with the suction device. It can for example comprise or be formed by a blower nozzle or the like.
  • a further feature of the invention is characterised in that the yarn end is arranged between a compressed-air outflow opening of the retaining means and a baffle face spaced therefrom.
  • the yarn end is held fast by friction on an appropriate baffle face which is preferably roughened, or provided with a corresponding coating, or a net or sieve.
  • Air current can also be directed at an inclination or parallel to the baffle face and it may possibly also blow the yarn end into a slot, an aperture or the like.
  • the retaining means is formed by a worm or the like which is roughened or provided with a rough coating, bristles or the like at least at the bottom of its spirals.
  • the yarn end is guided downwards over the flanks and held fast there by the rough surface.
  • the retaining worm rotates for the reverse conveying of the yarn end. The direction and speed of rotation are so selected that again the yarn end to be held fast remains approximately at the same position, considered in relation to the spinning machine.
  • FIG. 1 shows the package-changing apparatus according to the invention and the part of the spinning machine facing it, diagrammatically in front elevation and partly also in vertical section;
  • FIG. 2 shows a lateral elevation of FIG. 1.
  • a hard brush 12 serves as a retaining element. lts bristles or bristle tufts are inserted directly into a Vbelt 13 which is guided over two spaced reversing pulleys 14 and 15, one of which is driven by means not shown.
  • FIG. 1 shows that the connecting yarn piece 9, which after a cutting operation forms on the one hand the end of the removed package 5 and on the hand part the beginning of the yarn of a new package, is drawn transversely through the associated bristles of the brush 12. It is held fast there by friction, even after the cutting operation.
  • the package-changing apparatus 4 moves continuously along the spinning machine past the spindles 2. If for example the direction of movement of the package-changing apparatus is in the direction of the arrow 16 (FIG. 2), then according to a further feature of the invention the V-belt 13 is driven in the counter-clockwise direction. The upper run 17 of the V-belt accordingly moves in the direction of the arrow 18 and thus effects conveying back of the connecting yarn piece 9. Now the speed of rotation of the rotating brush is so selected that the speed of the apparatus 4 in the direction of the arrow 16 is just compensated for by this back conveying or rotational speed of the endless brush. Thus the connecting yarn piece 9 remains stationary in relation to the spindle 2 participating in the packing-changing operation.
  • the package-changing apparatus 4 By fitting the new yarn tube on the spindle 2 and/or by the constant further movement of the package-changing apparatus in the direction of the arrow 16 the cut-off end of the connecting yarn piece 9 is drawn out of the brush. Now a fresh working cycle commences on a subsequent spindle 2. If the package-changing apparatus 4 runs through between two spinning machines, it preferably carries a yam-cutter device and a retaining device 11 on the left and further ones on the right.
  • the two reversing pulleys 14, 15 for the brush l2 lie one behind the other in the direction of the arrow 16 of the package-changing apparatus 4, and are rotatable about horizontal axes which are directed perpendicularly of this direction of movement on the one hand and of the longitudinal axis of the spindles 2 on the other.
  • the reversing pulley 14 is here situated somewhat lower than the pulley 15. As indicated by FIG. 1, this achieves an especially narrow constructional form of the retaining device. It also appears from FIG. 1 that the lower run 19 of the circulating brush 12 is conducted past a scraper or quite generally past a brushcleaning device 20 which frees it of the fibres and the like which it has picked up. This cleaning can take place constantly or at intervals.
  • a package-changing apparatus for spinning and twisting machines in which packages in the form of a fully wound yarn tube are removed from a spindle and a fresh yarn tube placed on the spindle, the apparatus comprising movable support means arranged to move past the spindle, cutting means located on said movable support means and retaining means movably mounted on the movable support means in a position located between the cutting means and the spindle so that upon removal of a package from the spindle the end of the yarn on the package is held by the retaining means prior to the cutting of the yarn, and after cutting of the yarn turns of yarn formed on the spindle are held in position thereon by the retaining means until a new yarn tube is placed on the spindle.
  • the retaining device comprises a hard or soft brush over which the yarn end is guided.
  • the retaining means comprises two reversing pulleys mutually spaced apart, an endless belt guided on said pulleys and a plurality of bristles located on said belt, at least one of the pulleys comprising a drive pulley.
  • Apparatus according to claim 1 further comprising a cleaning device mounted on the movable support means for cleaning the retaining means.
  • a package changing apparatus comprising movable support means arranged to move past the spindle, cutting means located on said movable support means and retaining means movably mounted on the movable support means in a position located between the cutting means and the spindle so that upon removal of a package from the spindle the end of the yarn on the package is held by the retaining means prior to the cutting of the yarn, and after cutting of the yarn turns of yarn formed on the spindle are held in position thereon by the retaining means until a new yarn tube is placed on the spindle.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Replacing, Conveying, And Pick-Finding For Filamentary Materials (AREA)
US421218A 1972-12-29 1973-12-03 Spool changing device for spinning machines Expired - Lifetime US3899870A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2263933A DE2263933A1 (de) 1972-12-29 1972-12-29 Spulenwechselvorrichtung fuer spinn-, zwirnmaschinen und dgl

Publications (1)

Publication Number Publication Date
US3899870A true US3899870A (en) 1975-08-19

Family

ID=5865696

Family Applications (1)

Application Number Title Priority Date Filing Date
US421218A Expired - Lifetime US3899870A (en) 1972-12-29 1973-12-03 Spool changing device for spinning machines

Country Status (7)

Country Link
US (1) US3899870A (fr)
JP (1) JPS4994935A (fr)
CH (1) CH575020A5 (fr)
DE (1) DE2263933A1 (fr)
FR (1) FR2212449B3 (fr)
GB (1) GB1417265A (fr)
IT (1) IT1001022B (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2921752A (en) * 1957-10-01 1960-01-19 Bates Mfg Co Bobbin tip bunch builder
US2955409A (en) * 1957-10-25 1960-10-11 Ici Ltd Treatment of yarns
US3012734A (en) * 1951-04-26 1961-12-12 Leesona Corp Winding machine with load size thread snag
US3103779A (en) * 1961-07-13 1963-09-17 Glastra Tube for ring spinning frame and apparatus for connecting a yarn end to said tube
US3365991A (en) * 1965-01-19 1968-01-30 Mechanical Ind Inc Strand detector, clamp and severing device
US3696602A (en) * 1970-08-27 1972-10-10 Barber Colman Co Means for doffing a bobbin and forming a transfer tail

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3012734A (en) * 1951-04-26 1961-12-12 Leesona Corp Winding machine with load size thread snag
US2921752A (en) * 1957-10-01 1960-01-19 Bates Mfg Co Bobbin tip bunch builder
US2955409A (en) * 1957-10-25 1960-10-11 Ici Ltd Treatment of yarns
US3103779A (en) * 1961-07-13 1963-09-17 Glastra Tube for ring spinning frame and apparatus for connecting a yarn end to said tube
US3365991A (en) * 1965-01-19 1968-01-30 Mechanical Ind Inc Strand detector, clamp and severing device
US3696602A (en) * 1970-08-27 1972-10-10 Barber Colman Co Means for doffing a bobbin and forming a transfer tail

Also Published As

Publication number Publication date
DE2263933A1 (de) 1974-07-11
JPS4994935A (fr) 1974-09-09
FR2212449A1 (fr) 1974-07-26
CH575020A5 (fr) 1976-04-30
FR2212449B3 (fr) 1976-10-01
IT1001022B (it) 1976-04-20
GB1417265A (en) 1975-12-10

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