EP1769110B1 - Vorrichtung und verfahren zur einführung und vorförderung eines faserbands in ein spinnaggregat - Google Patents

Vorrichtung und verfahren zur einführung und vorförderung eines faserbands in ein spinnaggregat Download PDF

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Publication number
EP1769110B1
EP1769110B1 EP04745192A EP04745192A EP1769110B1 EP 1769110 B1 EP1769110 B1 EP 1769110B1 EP 04745192 A EP04745192 A EP 04745192A EP 04745192 A EP04745192 A EP 04745192A EP 1769110 B1 EP1769110 B1 EP 1769110B1
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EP
European Patent Office
Prior art keywords
sliver
seizing
equipment
prefeeding
spinning unit
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Not-in-force
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EP04745192A
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English (en)
French (fr)
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EP1769110A1 (de
Inventor
Solitario Nesti
Marco Barbieri
Vittorio Colussi
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Ministero Dell'istruzione Dell'universita E Della Ricerca
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Ministero Dell'istruzione Dell'universita E Della Ricerca
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Publication of EP1769110A1 publication Critical patent/EP1769110A1/de
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Publication of EP1769110B1 publication Critical patent/EP1769110B1/de
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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
    • 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

  • This invention relates to apparatus for inserting and prefeeding a sliver into a spinning unit according to the precharacterising clause of claim 1.
  • this invention finds application in the field of spinning machines of the open-end type in which the individual spinning units, which are in line at the front of the spinning machine, are provided with a mouth or opening for feeding the sliver.
  • Spinning machines produce bobbins of yarn from a fibrous structure having a high linear weight, commonly called sliver, which is held in containers or spinning cans on the ground close to and beneath the spinning units.
  • the sliver has to be taken from the can and prepared and positioned for insertion into the feed opening of the spinning unit.
  • the sliver then has to be inserted and a brief (prefeed) action of the device drafting the sliver within the spinning unit has to be put into effect.
  • the sliver is pneumatically picked up from the can through vacuum produced in a sliver feed device. Subsequently the sliver taken from the can is conveyed towards a series of guide devices to the card present in the spinning unit.
  • equipment of the type mentioned above although making it possible for the operation of feeding sliver to an open-end spinning unit to be performed automatically, has considerable disadvantages in terms of reliability and costs mainly because of the need to create a vacuum condition in order to feed the sliver, and the efficiency of the sliver feed operation.
  • the purpose of this invention is to provide equipment for inserting and prefeeding sliver into a spinning unit having structural and functional characteristics such as to satisfy the abovementioned requirements and at the same time to overcome the disadvantages mentioned with respect to the known art.
  • This object is achieved through equipment for inserting and prefeeding a sliver into a spinning unit according to a spinning unit according to claim 1.
  • an object of this invention is a method for inserting and prefeeding a sliver into a spinning unit according to claim 16.
  • Each spinning unit F i in spinning machine 1 is fed with corresponding sliver N i contained in a spinning can V i suitably positioned for the corresponding spinning unit F i and beneath it.
  • each spinning can V i is positioned in a seat S i provided in the lower part of the corresponding spinning unit F i ( Figure 2 ).
  • Each spinning unit F i has an opening A i for feeding the sliver N i present in spinning can V i .
  • Advantageously spinning can V is transported to spinning unit F by a moving unit or doffer 2 mounted on a guide member 3 to travel along the direction of the longitudinal extension of spinning machine 1, specifically the horizontal orientation X-X.
  • Guide member 3 of mobile unit 2, located close to the working front of spinning unit F i may be of different types, as is known in the state of the art, and positioned in different ways, such as for example on the floor and/or overhead.
  • Mobile unit or doffer 2 may be provided, for example, with an on-board electrical switchboard, a station for the transport of full cans, a station for the transport of empty cans and for weighing them, and a device for picking up individual cans and placing them in their own seats.
  • can V carried by mobile unit 2 is discharged therefrom and positioned in the appropriate seat S provided in the lower part of spinning unit F.
  • An end 4 of a sliver N located in spinning can V is positioned outside can V.
  • can V is of rectangular shape and end 4 of the sliver N projects ( Figure 2 ) from the can from side 10 of can V located opposite spinning units F.
  • end 4 of sliver N is loose and extends along side 12 of can V in the vertical orientation Z-Z.
  • end 4 of sliver N which lies outside the can typically has a minimum predefined length and is positioned close to the median part of side 12 of can V.
  • can V comes from a can loading area in which a filling device known as a coiler, designed to control both the length and position of end 4 of sliver N lying outside each can V i , is typically provided.
  • 10 indicates as a whole equipment according to this invention for inserting and prefeeding a sliver N into spinning unit F.
  • sliver N must be inserted into the feed opening A of spinning unit F.
  • equipment 10 is mounted on mobile unit 2 used for moving and/or loading/unloading cans at the various spinning units F i ( Figure 3 ).
  • equipment 10 may be mounted on a separate mobile unit which can move on the same guide member 3 or on another different guide member, or is housed on a service unit 21 for cleaning and starting spinning within the open-end unit.
  • Equipment 10 comprises means for seizing a sliver N and pulling a portion of sliver N so as to determine an optimum length for insertion.
  • the seizing and pulling means are capable of seizing end 4 of the sliver N extending from can V and pulling a terminal portion 5 of that end 4.
  • the seizing and pulling means comprise three seizing members 6, 7, 8 comprising two corresponding opposing seizing members 6a, 7a, 8a and 6b, 7b, 8b working together in the manner of a jaw to seize different portions of end 4 projecting from can V.
  • seizing members 6a, 7a, 8a and 6b, 7b, 8b can move reciprocally towards the median part of the side 12 of can V in the X-X orientation.
  • seizing members 6, 7, 8 can effectively seize the end of the sliver when this is positioned in a different way with respect to the median part of the can, which acts as a known reference point.
  • Seizing members 6, 7 are in a fixed position with respect to each other along the vertical Z-Z orientation, but seizing member 8 can move away from and towards seizing members 6, 7 along this vertical Z-Z orientation.
  • Moving member 8 moves in a movement away from seizing members 6, 7 along the Z-Z orientation in the direction indicated by Z- in the appended figures.
  • moving seizing member 8 acts on end 4 of roving N to pull terminal portion 5 of end 4.
  • the approaching movement towards seizing members 6, 7, indicated by Z+ is instead necessary in order to reestablish the original position of seizing members 6, 7, 8 in order to perform another pulling operation on a new end of the sliver.
  • the group of seizing members 6, 7, 8 can move in the Y-Y orientation to advance towards the side 12 of can V from which end 4 of sliver N projects.
  • the Y-Y orientation corresponds to the direction of the depth of spinning unit F and Y+ indicates the direction of advance of the group of seizing members 6, 7, 8 towards spinning unit F.
  • the advance of the group of seizing members 6, 7, 8 along the Y-Y orientation in the Y+ direction must be stopped at a position such as to enable seizing members 6, 7, 8 to seize end 4 of sliver N correctly.
  • a detector or a system of position sensors which determines the presence and precise position of can V.
  • L 1 indicates the distance measured along the Z-Z orientation between seizing members 6 and 7
  • L 2 indicates the distance measured along the Z-Z orientation between seizing members 7 and 8 in the resting position.
  • length 11 of end 4 of sliver N lying between seizing members 6 and 7 can be unequivocally identified in respect of length and above all position. This arises specifically from the fact that the two seizing members 6, 7 remain fixed with respect to each other during the movement performed by moving seizing member 8 along the vertical Z-Z orientation in the Z- direction in order to pull terminal portion 5 of end 4 of sliver N.
  • the distance L 2 from moving seizing member 8 to seizing members 6, 7 can be adjusted according to the type of fibre, in particular according to the specific length of the fibres which form the sliver N.
  • the pull effected by moving jaw 8 causes fraying of the fibres of sliver N with the consequence that terminal portion 11a of length 11 of end 4 of sliver N remaining below seizing member 7 after the pull effected by moving seizing member 8 takes the form of a "tuft" of fibres predominantly aligned with respect to the axis of terminal portion 11a.
  • portion 11a In order to be able to insert portion 11a into feed opening A and therefore prefeed sliver N into spinning unit F it is necessary to taper terminal portion 11a of length 11 of sliver N.
  • This object equipment 10 comprises means for tapering the remaining terminal portion 11a of end 4 of the sliver N.
  • the tapering means comprise two members 13, 14 having corresponding surfaces 13a, 14a which can face each other.
  • Terminal portion 11a of sliver N is capable of being positioned between the two surfaces 13a, 14a and extends in a direction corresponding to the actual direction of the extension of the terminal portion 11a of sliver N.
  • terminal portion 11a positioned between the two surfaces 13a, 14a extends in the vertical Z-Z orientation.
  • the two members 13, 14 are mobile to carry the two surfaces 13a, 14a against each other in such a way that at least a portion of the corresponding surfaces 13a, 14a engages with the terminal portion 11a of sliver N.
  • the two members can move in the horizontal X-X orientation.
  • At least one of the two surfaces 13a 14a can move so as to move with respect to the other in a direction, in the case in point along the Y-Y orientation, substantially perpendicular to the Z-Z orientation of the extension of terminal portion 11a between the two surfaces 13a, 14a, that is in the Z-Z orientation with respect to which tapering of terminal portion 11a occurs.
  • both surfaces 13a, 14a can move in the opposite direction to the other along the Y-Y orientation.
  • This relative movement between the two surfaces 13a, 14a of members 13, 14 makes it possible to impress an axial rotation upon the fibres of terminal portion 11a which brings about tapering of terminal portion 11a.
  • Advantageously surfaces 13a, 14a and terminal portion 11a can also move with respect to each other along the Z-Z orientation of tapering terminal portion 11a requiring tapering.
  • members 13, 14 take the form of two annular bands supported by corresponding groups of rotating rollers 15, 16.
  • rollers 15 and 16 of members 13 and 14 are arranged so as to rotate about their corresponding axes of rotation parallel to the Z-Z orientation of tapering terminal portion 11a requiring tapering.
  • 17 indicates the tapered portion of the terminal portion 11a of end 4 of sliver N obtained using the tapering means described above.
  • Tapered portion 17 is intended to be inserted into the feed opening A of spinning unit F.
  • tapered portion 17 is inserted into feed opening A in a direction of insertion which is parallel to the Y-Y orientation in the direction indicated by Y+ in the figures.
  • feed means for sliver N are present in feed opening A of spinning unit F.
  • the feed means comprise devices for drafting sliver N which are capable of delivering the same to the spinning devices (these also not illustrated in the appended figures). Furthermore this drafting function is performed by one or more feed rollers located in such a way as to convey the sliver and deliver it appropriately.
  • the feed rollers may comprise a knurled rotating cylinder capable of acting together with a wall which can move towards and away from the cylinder.
  • the wall can move towards the knurled cylinder to press tapered portion 17 of sliver N inserted into feed opening A against the knurled members of the rotating cylinder. Operation of the feed means, that is the knurled cylinder, for a predetermined length of time ⁇ T thus brings about the prefeeding of sliver N.
  • Equipment 10 also comprises means for seizing and moving end 4 of sliver N and for inserting tapered terminal portion 17 into feed opening A.
  • the means for seizing and moving end 4 of sliver N comprise a seizing and moving member 9 ( Figures 1 and 4 to 13 ) capable of transporting the seized length 11 of end 4 of sliver N remaining after the pull performed by moving seizing member 8 and inserting tapered terminal portion 17 into the feed opening A of spinning unit F.
  • seizing member 9 takes the form of a clamp 9 defined by two jaws 9a, 9b which are hinged together and can close to seize length 11 of end 4 of the sliver and which are mounted on a base rotating about the axis of seizing member 9, in Figures 8 and 9 about an axis parallel to the X-X orientation.
  • the closure of clamp 9 on length 11 of end 4 lying between members 6 and 7 is controlled at the same time as the movement of moving seizing member 8 ( Figure 7 ).
  • the closure of clamp 9 may also be controlled immediately before or after moving seizing member 8 has pulled terminal portion 5 of end 4 of sliver N.
  • the operation of inserting tapered portion 17 into opening A can be performed by seizing and moving member 9 which following the tapering operation can continue to grip length 11 of end 4 of sliver N and be controlled in such a way as to insert tapered portion 17 into feed opening A.
  • spinning machine F has a longitudinal guide 19 ( Figure 2 ) on which there moves moving member 20 which is capable of transporting a service unit 21 along the different spinning units F 1 .
  • longitudinal guide 19 is located along vertical Z-Z orientation beneath the level at which feed opening A is located.
  • service unit 21 is designed for the transport of automatic systems for cleaning and starting spinning within inactive spinning units F i or other auxiliary systems.
  • Longitudinal guide 19 supporting moving member 20 which transports service unit 21 represents a hazard for sliver N in that said sliver N will pass above guide 19. In this case sliver N would in fact interfere with moving unit 20 which moves on guide 19.
  • the means for inserting tapered portion 17 into feed opening A comprise a second seizing and moving member 18 ( Figures 13 to 17 ) capable of taking tapered terminal portion 17 from said first seizing and moving member 9 in order to insert it into the feed opening A of spinning unit F.
  • seizing and moving member 18 takes the form of a clamp 18 formed by two jaws 18a, 18b which act together to grasp terminal portion 17 of end 4 of sliver N. It must be pointed out that the need to provide a second seizing and moving member 18 which is separate from seizing and moving member 9 may arise from other requirements of a structural and/or functional type for equipment 10 and spinning machine 1.
  • equipment 10 advantageously comprises means to assist the insertion of tapered terminal portion 17 of sliver N into the feed opening A of spinning unit F.
  • the means for assisting the insertion of tapered portion 17 comprise a shaped member 22 capable of acting directly on tapered portion 17 to permit the feed means, that is the moving wall and the knurled feed cylinder, to grasp tapered portion 17.
  • shaped member 22 is of a "blade" shape so as to be able to be inserted into feed opening A at the same time as tapered portion 17 of sliver N borne by the seizing and moving means.
  • shaped member 22 can move towards and away from feed opening A in a direction which coincides with the Y-Y orientation in which tapered portion 17 is inserted into opening A. In this way the need to control movement of the moving wall away from the knurled cylinder to grip tapered portion 17 is avoided in that this operation is performed by shaped member 22. Also the quantity of fibre affected by gripping is controlled and repeatable.
  • member 9 is used directly, or whether second seizing and moving member 18 is necessary in order to carry tapered portion 17 to feed opening A, it is necessary to perform a movement in the vertical Z-Z orientation.
  • This movement in the vertical Z-Z orientation requires that a quantity of sliver N, typically laid in a circular loop within can V, be taken from can V, and these loops may cause end portion 23 of end 4 of sliver N, which is above member 18, to snake in the X-X orientation and cause it to interfere with the adjacent devices. This could cause end portion 23 of end 4 to break, thus bringing the operation already performed on sliver N to naught. If this occurs insertion and prefeed has to be performed manually by the operator.
  • equipment 10 comprises means for guiding sliver N which are capable of guiding end portion 23 of end 4 of sliver N located above the seizing and moving means and below can V.
  • These guide means is to prevent end portion 23 of sliver N from interfering with the other devices of equipment 10 during the stage of inserting tapered portion 17 into feed opening A performed by the seizing and moving member of equipment 10 according to the invention.
  • the guide means comprise a pair of forks 24a, 24b which can control end portion 23 of end 4 of sliver N and guide it.
  • Spinning unit F also comprises a sliver guide ring 25 positioned on the front part of spinning unit F in order to ensure that sliver N is correctly positioned during spinning.
  • sliver guide ring 25 is conveniently hinged to rotate about a pin 26 which extends in the vertical Z-Z orientation.
  • sliver guide ring 25 can move between a closed position in which with a U-shaped sliver passage member 27 it forms a through opening 28 extending in the Z-Z orientation capable of permitting sliver N to pass and an open position in which sliver N is pressed against sliver passage member 27.
  • equipment 10 according to the invention comprises a pusher 29 ( Figures 1 and 13 to 17 ) capable of acting in the Y+ direction on a fixed stop member 30 provided on sliver guide ring 25.
  • ring 25 rotates against resilient means (not illustrated in the figures) which are designed to hold sliver guide ring 25 in the closed position and oppose its opening brought about by pusher 29 and at the same time to assist its closure when pusher 29 is released.
  • Equipment 10 also comprises corresponding activating means for activating the seizing and pulling means, the tapering means and the seizing and moving means.
  • the activating means may, for example, comprise pneumatic activators, electric motors including stepping motors or other conventional means normally used to automate the movement of two or more parts.
  • equipment 10 may be provided with command and control means to control the operation of the aforesaid activating means.
  • equipment 10 comprises motor means 32 to move seizing member 8 in relation to seizing members 6, 7 in the vertical Z-Z orientation and to move seizing members 6a, 7a, 8a and 6b, 7b, 8b, motor means 33 to effect opening and closing of jaws 9a, 9b of seizing and moving member 9 and to move and rotate the same, motor means 34 to move tapering members 13, 14 and to cause rollers 15, 16 to rotate.
  • the equipment also comprises corresponding motor means (not illustrated in the figures) to move forks 24a, 24b, pusher 29, shaped member 22, seizing and moving member 18 and to cause the jaws 18a, 18b of member 18 itself to open and close.
  • Control means are also provided to control the means for feeding sliver N for the predetermined time interval ⁇ T and to achieve the prefeed of sliver N.
  • the means controlling the prefeed comprise a pusher member 35 which can press on an operating switch 37 located in the front part of spinning unit F and capable of controlling activation of the means feeding sliver N present in feed opening A for a predetermined period of time ⁇ T.
  • the prefeed control means comprise a system of sensors capable of establishing that the tapered portion 17 of sliver N has been engaged with the feed means for sliver N present in feed opening A so as to control operation of the feed means themselves for a predetermined period of time.
  • forks 24a, 24b, pusher 29, shaped member 22 and pusher member 35 are supported so that they can move on a "poll"-shaped member 36 ( Figure 1 ) to permit the aforesaid devices to advance in the Y+ direction.
  • the equipment comprises means (not illustrated in the figures) to establish optically or by contact that the various portions of the sliver are_ present and in the correct position throughout the cycle, and control means whose function is to stop the cycle and provide a warning in the event of malfunction.
  • end 4 of the sliver N is positioned close to halfway along side 12 of can V and extends beyond a certain minimum length in the Z-Z orientation.
  • the means for seizing sliver N and pulling terminal portion 5 of sliver N are activated.
  • seizing members 6, 7, 8 are caused to advance along the Y-Y orientation in the Y+ direction ( Figures 4 and 5 ) towards side 12 of can V until specific sensors or a detector element, not illustrated because it is conventional, detects the presence and precise position of can V.
  • the corresponding opposing seizing members 6a, 7a, 8a and 6b, 7b, 8b are activated to move towards each other towards the median part of side 12 of can V along the X-X orientation.
  • seizing members 6, 7, 8 seize end 4 of sliver N ( Figure 6 ) moving seizing member 8 is activated to move along the Z-Z orientation in the Z- direction ( Figure 7 ) away from seizing members 6, 7 so as to pull terminal portion 5 of end 4.
  • seizing member 8 When seizing member 8 has pulled the sliver, seizing members 8a, 8b open to release terminal portion 5, which is collected, for example, in a container beneath.
  • jaws 9a, 9b of clamp 9 are offered up to length 11 of the sliver and caused to close to seize length 11 of end 4 of sliver N remaining after it has been pulled by moving seizing member 8.
  • the two annular bands 13, 14 are caused to advance in the Y+ direction ( Figure 10 ) so that terminal portion 11a of sliver N is positioned between the two surfaces 13a, 14a in the Z-Z tapering orientation corresponding to the axial orientation of terminal portion 11a of sliver N.
  • clamp 9 may move in the Y- direction to position terminal portion 11a of sliver N between the two surfaces 13a, 14a.
  • the two annular bands 13, 14 move towards each other along the X-X orientation or rotate about axes parallel to Z-Z in order to bring the two surfaces 13a, 14a together. In this way the two surfaces 13a, 14a engage terminal portion 11a of sliver N.
  • rollers 15 and 16 are caused to rotate about their corresponding axes of rotation in order to taper terminal portion 11a of sliver N.
  • the two members 13, 14 and clamp 9 may be caused to move reciprocally in the Z-Z tapering orientation for terminal portion 11a which is to be tapered ( Figure 11 ).
  • clamp 9 is advantageously caused to rotate through 90° about the X-X orientation ( Figure 12 ) in such a way as to move the tip 17b of tapered portion 17 away from the orientation in the Z+ direction to that in the Y+ direction which is necessary for tapered portion 17 to be inserted into feed opening A of spinning unit F.
  • Clamp 9 is then moved for a predetermined distance along the Y-Y orientation in the Y+ direction towards spinning unit F ( Figure 13 ).
  • clamp 18 which for the purpose moves in the Y+ direction together with member 36 and at the same time in the Z- direction in order to lie adjacent to clamp 9 to seize end 4.
  • clamp 18 can close ( Figure 14 ) to seize end 4 which is thus constrained to pass from the lower part of guide 19.
  • clamp 18 moves along the Z-Z orientation in the Z+ direction to bring the tip 17b of tapered portion 17 to the level of feed opening A ( Figure 16 ).
  • pair of forks 24, 25 is caused to advance in the Y+ direction, and also if appropriate in the Z- direction, to guide the tail portion 23 of end 4 of sliver N while this is lifted from the can ( Figure 17 ).
  • Clamp 18 now moves in the Y-Y orientation to insert tapered portion 17 in feed opening A.
  • pusher 29 acts in the Y+ direction on fixed stop member 30 to cause ring 25 to rotate about pin 26 against the force ( Figure 17 ).
  • a sliver drafting device typically comprising a knurled rotating cylinder acting together with a wall which moves towards and away from the cylinder.
  • Shaped member 22 is used to assist prefeeding sliver N, which must be preceded by tightening tapered portion 17 of sliver N between the cylinder and the moving wall.
  • shaped member 22 which is of a "blade" shape, is inserted into feed opening A at the same time as tapered portion 17 of sliver N borne by clamp 18.
  • shaped member 22 moves away from and towards feed opening A along the Y-Y orientation in the Y+ direction in which tapered portion 17 is inserted into opening A.
  • the outer portion of feed opening A may be provided with a member (not illustrated in the figures), called a "tablet", the pressure of which, provided by appropriate control means, controls movement of the moving wall away from the knurled cylinder.
  • a member not illustrated in the figures
  • the tapered portion can be inserted between the moving wall and the knurled cylinder without the intervention of the shaped member described above. Subsequently release of the "tablet" allows tapered portion 17 to be engaged with the feed means.
  • prefeeding is carried out by operating the drafting devices for sliver N present in spinning unit F for a short time, this being effected through the pressure of pusher member 35 on operating switch 37 which controls activation of the means feeding sliver N present within feed opening A.
  • Switch 37 is activated for a predetermined period of time ⁇ T sufficient to allow sliver N to be seized by the drafting devices present in feed opening A.
  • Period of time ⁇ T must therefore be such as not to give rise to either an accumulation of fibre or on the other hand an insufficiency of fibre.
  • time period ⁇ T may be between a few tenths of a second and up to a few seconds.
  • a mechanical device or an air jet must then act to release portion 23 of sliver end 4 from jaw 9b of member 9 ( Figure 17 ) and permit it and member 36 to move along the Y-Y orientation in the Y- direction in order to set up equipment 10 for further action.
  • spinning unit F is ready and sliver N can be correctly fed to the spinning devices in spinning unit F.
  • the equipment according to this invention makes it possible to satisfy the requirements and overcome the disadvantages mentioned in the introductory part of this description with reference to the known art.
  • the equipment may operate in combination with a moving unit for the transport of bins along the various spinning units of the spinning machine. After an empty can has been replaced by a full can the equipment seeks the end of the sliver and prepares its end performing a pulling and tapering operation which ensures that the tip has the appropriate length, shape and consistency. The tip treated in this way is then inserted into the devices feeding sliver to the card present in the spinning unit, and controls appropriate prefeeding.
  • the equipment can be installed in combination with moving can transport unit 2, as illustrated in Figure 1 , or on means which interact with the spinning units, for example appropriately service unit 21.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Preliminary Treatment Of Fibers (AREA)

Claims (16)

  1. Gerät (10) zum Einführen und zum Vorfördern eines Faserbands (N) in eine Zuführöffnung (A) einer Spinneinheit (F), wobei das Faserband (N) in einem Spinntopf (V) enthalten ist, der bei der Spinneinheit (F) positioniert ist, und der ein Ende (4) außerhalb des Topfes (V) hat, wobei das Faserbandende lose längs der Seite des Topfes hängt, wobei die Vorrichtung (10) dadurch gekennzeichnet ist, dass sie umfasst:
    eine Einrichtung zum Fördern des Faserbands (N), wobei die Einrichtung zum Fördern in der Zuführöffnung (A) der Spinneinheit (F) positioniert ist;
    eine Einrichtung (6, 7, 8) zum Fangen des Endes (4) des Faserbands (N) und zum Ziehen eines Endbereichs (5) des Endes (4),
    eine Einrichtung (13, 14) zum Abschrägen des verbleibenden Endbereichs (11a) des Endes (4) des Faserbands (N),
    eine Einrichtung (9, 18) zum Fangen und zum Bewegen des Endes (4) des Faserbands (5), um den abgeschrägten Endbereich (17) in die Zuführöffnung (A) der Spinneinheit (F) einzuführen,
    wobei eine entsprechende Betätigungseinrichtung (32, 33, 34) vorgesehen ist, um die Fang- und Zieheinrichtung (6, 7, 8), die Abschrägungseinrichtung (13, 14) und die Fang- und Bewegungseinrichtung (9, 18) zu aktivieren, und
    wobei eine Steuereinrichtung (35, 37) vorgesehen ist, um die Einrichtung zu steuern, welche das Faserband (N) in die Zuführöffnung (A) fördert.
  2. Gerät (10) zum Einführen und Vorfördern eines Faserbands (N) nach Anspruch 1, wobei die Fang- und Zieheinrichtung drei Fangteile (6, 7, 8) aufweist, welche in der Lage sind, unterschiedliche Bereiche des Endes (4) des Faserbands (N) zu fangen, wobei ein Fangteil (8) der Fangteile (6, 7, 8) sich in Bezug auf die anderen beiden Fangteile (6, 7) in einer vorher bestimmten Orientierung (Z-Z) bewegen kann, um den Endbereich (5) des Endes (4) des Faserbands (N) zu ziehen.
  3. Gerät (10) zum Einführen und Vorfördern eines Faserbands (N) nach Anspruch 2, wobei die drei Fangteile (6, 7, 8) zwei entsprechende abgewandte Fangteile (6a, 7a, 8a, 6b, 7b, 8b) umfassen, welches zusammen in der Form von Klauen wirken, um die unterschiedlichen Bereiche des Endes (4) des Faserbands (N) zu fangen.
  4. Gerät (10) zum Einführen und Vorfördern eines Faserbands (N) nach einem der Ansprüche 1 bis 3, wobei die Fang- und Zieheinrichtung sich bewegen kann, um das Ende (4) des Faserbands (N), welches von dem Topf (V) ragt, zu fangen.
  5. Gerät (10) zum Einführen und Vorfördern eines Faserbands (N) nach einem der Ansprüche 1 bis 4, wobei die Einrichtung zum Abschrägen des verbleibenden Endbereichs (11a) des Endes (4) des Faserbands (N) zwei Teile (13, 14) umfasst, welche entsprechende Flächen (13a, 14a) haben, über welche der verbleibende Endbereich (11a), der abzuschrägen ist, positioniert werden kann, der sich in einer vorgegebenen Abschrägungsorientierung (Z-Z) erstreckt, wobei die beiden Teile (13, 14) sich bewegen können, um die Flächen (13a, 14a), welche einander zugewandt sind und den Endbereich (11a) erfassen, der abzuschrägen ist, zu tragen, wobei zumindest eine der beiden Flächen sich in Bezug auf die andere in einer Orientierung (Y-Y) bewegen kann, welche im Wesentlichen senkrecht zu der Abschrägungsorientierung (Z-Z) ist.
  6. Gerät (10) zum Einführen und Vorfördern eines Faserbands (N) nach einem der Ansprüche 1 bis 5, wobei die Einrichtung zum Fangen und zum Bewegen des Endes (4) des Faserbands (N) ein erstes Fang- und Bewegungsteil (9) umfasst, welches die Länge (11) des Endes (4) des Faserbands (N) fangen kann, welches nach dem Ziehen verbleibt, und ein zweites Fang- und Bewegungsteil (18), welches den abgeschrägten Endbereich (17) von dem ersten Fang- und Bewegungsteil (9) nehmen kann, um dieses in die Zuführöffnung (A) der Spinneinheit (F) einzuführen.
  7. Gerät (10) zum Einführen und Vorfördern eines Faserbands (N) nach Anspruch 6, wobei die Fang- und Bewegungseinrichtung sich bewegen kann, um das verbleibende Endteil (11a) zu zeigen, das zwischen den beiden Flächen (13a, 14a) in der vorher bestimmten Abschrägungsorientierung (Z-Z) abzuschrägen ist.
  8. Gerät (10) zum Einführen und Vorfördern eines Faserbands (N) nach einem der Ansprüche 1 bis 7, wobei die Steuereinrichtung (35, 37) ein Drückteil (35) aufweist, welches auf einen Aktivierungsdruckschalter (37) drücken kann, der auf der Spinneinheit (F) vorgesehen ist, und die Aktivierung der Einrichtung zum Fördern des Faserbands (N) steuern kann.
  9. Gerät (10) zum Einführen und Vorfördern eines Faserbands (N) nach einem der Ansprüche 1 bis 8, wobei die Einrichtung zum Fördern des Faserbands (N) einen gerändelten Drehzylinder umfasst, der in der Lage ist, zusammen mit einer Wand zu wirken, welche sich in Richtung auf und weg von dem Zylinder bewegen kann, um den abgeschrägten Bereich (17) des Faserbands (N) gegen die gerändelten Teile des Drehzylinders zu drücken.
  10. Gerät (10) zum Einführen und Vorfördern eines Faserbands (N) nach einem der Ansprüche 1 bis 9, welches eine Einrichtung umfasst, um das Einführen des abgeschrägten Bereichs (17) in die Zuführöffnung (A) zu unterstützen, wobei die Unterstützungseinrichtung ein messerförmiges Teil (22) aufweist, welches in der Lage ist, unmittelbar auf den abgeschrägten Bereich (17) zu wirken, um der Zuführeinrichtung für das Faserband (N) zu erlauben, den abgeschrägten Bereich (17) zu erfassen.
  11. Gerät (10) zum Einführen und Vorfördern eines Faserbands (N) nach einem der Ansprüche 1 bis 10, welches eine Einrichtung umfasst, um das Faserband zu führen, welche in der Lage ist, den Endbereich (23) des Faserbands (N) zu führen, der zwischen der Fang- und Bewegungseinrichtung (9, 18) und dem Topf (V) liegt.
  12. Gerät (10) zum Einführen und Vorfördern eines Faserbands (N) nach Anspruch 11, wobei die Einrichtung zum Führen des Faserbands gepaarte Gabeln (24a, 24b) umfasst, welche in der Lage sind, den Endbereich (23) des Endes (4) des Faserbands (N) zu führen.
  13. Gerät (10) zum Einführen und Vorfördern eines Faserbands (N) nach Anspruch 12, wobei die Einrichtung zum Führen des Faserbands einen Faserbandführungsring (25) umfasst, der sich zwischen einer Schließposition bewegen kann, in welcher er zusammen mit einem Faserbanddurchgangsteil (27) eine Durchgangsöffnung (28) zum Durchlassen des Faserbands (N) bildet, und einer Öffnungsposition, in welcher das Faserband (N) längsseitig des Faserbanddurchgangsteils (27) gebracht wird.
  14. Gerät (10) zum Einführen und Vorfördern eines Faserbands (N) nach Anspruch 1, wobei die Einrichtung zum Fangen und zum Bewegen des Endes (4) des Faserbands (N) ein Fang- und Bewegungsteil umfasst, welches in der Lage ist, den verbleibenden Bereich (11) des Endes (4) des Faserbands (N) zu fangen und um den abgeschrägten Endbereich (17) in die Zuführöffnung (A) der Spinneinheit (F) einzuführen.
  15. Gerät (10) zum Einführen und Vorfördern eines Faserbands (N) nach einem der Ansprüche 1 bis 14, wobei die Spinneinheit (F) einen Faserbandführungsring (25) umfasst, der zwischen einer Schließposition bewegt werden kann, in welcher er zusammen mit einem U-förmigen Faserbanddurchgangsteil (27) eine Durchgangsöffnung (28) bildet, die in der Lage ist, den Durchgang des Faserbands (N) zuzulassen, und einer Öffnungsposition, in welcher das Faserband (N) längsseitig vom Faserbanddurchgangsteil (27) gebracht wird.
  16. Verfahren zum Einführen und Vorfördern eines Faserbands (N) in eine Zuführöffnung (A) einer Spinneinheit (F), wobei das Faserband (N) in einem Spinntopf (V) enthalten ist, der in der Spinneinheit (V) positioniert ist, welche an der Spinneinheit (F) angeordnet ist, und ein Ende (4) außerhalb des Topfes (V) hat, wobei das Faserbandende lose längsseitig des Topfes hängt, wobei die Einrichtung zum Zuführen des Faserbands (N) in der Zuführöffnung (A) der Spinneinheit (F) positioniert ist, wobei das Verfahren (10) folgende Schritte umfasst:
    - Fangen des Endes (4) des Faserbands (N),
    - Ziehen eines Endbereichs (5) des Endes (4),
    - Abschrägen des verbleibenden Endbereichs (11a) des Endes (4) des Faserbands (N),
    - Einführen des abgeschrägten Endbereichs (17) in die Zuführöffnung (A) der Spinneinheit (F), und
    - Steuern der Vorförderung eines Bereichs des Faserbands (N) in die Zuführöffnung (A) eine vorher festgelegte Zeitdauer (ΔT) lang.
EP04745192A 2004-06-30 2004-06-30 Vorrichtung und verfahren zur einführung und vorförderung eines faserbands in ein spinnaggregat Not-in-force EP1769110B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IT2004/000367 WO2006003679A1 (en) 2004-06-30 2004-06-30 Apparatus and method for inserting and pre-feeding a sliver into a spinning unit

Publications (2)

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EP1769110A1 EP1769110A1 (de) 2007-04-04
EP1769110B1 true EP1769110B1 (de) 2009-08-12

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EP (1) EP1769110B1 (de)
AT (1) ATE439462T1 (de)
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Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH679773A5 (de) * 1989-11-07 1992-04-15 Rieter Ag Maschf
US5276947A (en) * 1990-05-18 1994-01-11 Schubert & Salzer Maschinenfabrik Ag Device for the transportion of cans between machines or devices treating or processing fiber slivers
DE19547405A1 (de) * 1995-12-19 1997-06-26 Schlafhorst & Co W Einrichtung zum Vorbereiten einer frisch mit Faserband gefüllten Kanne
DE19858986A1 (de) * 1998-12-21 2000-06-29 Schlafhorst & Co W Bedienaggregat für eine Faserband verarbeitende Textilmaschine

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WO2006003679A1 (en) 2006-01-12
ATE439462T1 (de) 2009-08-15
EP1769110A1 (de) 2007-04-04

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