EP0322008B1 - Device for seeking a broken yarn end on a forming package - Google Patents
Device for seeking a broken yarn end on a forming package Download PDFInfo
- Publication number
- EP0322008B1 EP0322008B1 EP88202694A EP88202694A EP0322008B1 EP 0322008 B1 EP0322008 B1 EP 0322008B1 EP 88202694 A EP88202694 A EP 88202694A EP 88202694 A EP88202694 A EP 88202694A EP 0322008 B1 EP0322008 B1 EP 0322008B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- yarn
- package
- cone
- suction
- nozzles
- 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.)
- Expired - Lifetime
Links
- 238000007664 blowing Methods 0.000 claims description 18
- 230000007246 mechanism Effects 0.000 claims description 12
- 238000009987 spinning Methods 0.000 claims description 11
- 230000009471 action Effects 0.000 claims description 7
- 230000003287 optical effect Effects 0.000 claims description 7
- 238000005520 cutting process Methods 0.000 claims description 6
- 230000004888 barrier function Effects 0.000 claims description 5
- 230000003534 oscillatory effect Effects 0.000 claims description 4
- 238000004804 winding Methods 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims 1
- 230000005684 electric field Effects 0.000 claims 1
- 239000012530 fluid Substances 0.000 claims 1
- 230000015572 biosynthetic process Effects 0.000 description 20
- 239000004753 textile Substances 0.000 description 6
- 238000007378 ring spinning Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000005304 joining Methods 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Images
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
- B65H67/00—Replacing or removing cores, receptacles, or completed packages at paying-out, winding, or depositing stations
- B65H67/08—Automatic end-finding and material-interconnecting arrangements
-
- 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
- This invention relates to a device for seeking and withdrawing a broken yarn end on a package being formed in order to unwind a yarn length sufficient to allow a rejoining operation to take place for automatically reinstating the spinning process in a continuous ring spinning machine.
- One of the improvements towards which the present invention tends is in the seeking and withdrawal of a broken yarn end on a package being formed, from which a length is unwound sufficient to complete the rejoining cycle with maximum reliability and speed of implementation, and avoiding any need for unproductive repetition of the operation.
- Said known devices either do not ensure perfect preparation of the yarn under all conditions, or require a considerable use of blown air, or comprise blowing nozzles or sucker elements mounted in a fixed position and therefore unable to be operationally adapted to the variable position of the formation cone on whose surface the broken yarn end to be withdrawn is retained. It is apparent that in this latter case the separation action of the blowing nozzles or sucker elements extends only partly over the surface of the formation cone, or in the limit not at all, with the result that the yarn withdrawal device does not operate effectively.
- blower and/or sucker elements aided by blades of various materials which rub against the package surface, ie against the wound yarn layers, in an attempt to release the broken yarn end.
- FR-A-2 216 208 discloses a device for seeking and withdrawing a yarn end from a package, having the features of the preamble of claim 1.
- the nozzles are arranged concentrically to each other with a component direction in the axial direction of the package, so as to direct the air current onto the external surface of the package and release the yarn end without the need of simultaneously causing the package to be rotated. The released end is then sucked into the suction tube.
- the location of the nozzles which act substantially on a same circle, may however not be able to withdraw the yarn under any circumstances. To be sure to reach effective withdrawal it may be necessary to continuously vary the position of the package relative to the nozzles by moving the package up and down. This, on the other hand, may cause uncertainty about the real length of yarn withdrawn and may create problems in the subsequent joining stage, besides complicating the construction of the device.
- the object of the present invention is to provide a device by which the broken yarn end adhering to the surface of the package formation cone is reliably released and at the same time a yarn portion of sufficient length is unwound to complete the rejoining cycle by which the spinning operation can go to completion.
- a further object of the invention is to provide a device which when compared to the devices of the known art is constructionally simple and allows the necessary adjustments to be easily made as the geometrical parameters of the package being formed vary and as the type of yarn being wound varies.
- a device according to the present invention has the features claimed in claim 1.
- the device may also comprise a control mechanism arranged both to vertically move a package support peg upwards or downwards and to intermittently rotate said support peg to subject the entire surface of the formation cone to the action of the air jets from the blowing nozzles.
- the control source for rotating the peg and thus the bobbin may provide two rotary movements: firstly a slow rotation for seeking the end of the yarn and extricating it from the wound layers of the formation cone, and then a sufficiently rapid rotation to release into the suction duct the yarn length required for rejoining, this rapidity resulting not only in a reduction in the cycle time but also preventing the yarn fibrillating substantially under the action of the air stream.
- the pipes of the blowing nozzles may be coupled to respective guide supports fixed to the outer surface of the suction cap, the couplings allowing the pipes both to slide vertically and to rotate angularly to be able to perfectly adjust the operating directions of the air jets blowing against the zone in which the broken yarn end is to be found, on the basis of the dimensions of the package formation cone and the type of yarn wound.
- control mechanism located at the base of the package support peg may be able to generate an oscillatory reciprocating motion of limited amplitude straddling the position which the formation cone has assumed, this being done while the package is being rotated about its axis and in the opposite direction to the yarn winding.
- FIG. 1 designates the blowing nozzles which are located to surround the formation cone 5 and which operate by blowing jets of air onto the surface of the formation cone 5.
- Respective position-adjustable pipes 2 of the blowing nozzles 1 are supported by a suction cap 3 under which the upper end of the package 7 is located.
- Said cap has its lower profile located above the air jets of the nozzles 1 and tapers upperly to engage a suction duct 6 which extends up to a block 4 containing, in a first zone, sensing members for the yarn 8 and, in a second zone, cutting elements 12.
- This block 4 is the source of an air stream for conveying the end of the yarn 8 through a photo-electric or inductive sensor 9 and into a gap between the cutting blades of the scissor elements 12.
- the suction duct 6 is of a length substantially equal to the length of yarn to be unwound and sucked from the package 7, and connects the suction cap 3 to the block 4.
- the yarn 8 sucked from the package 7 is unwound by a length sufficient to allow the sucked yarn to be sensed by a light barrier 10 arranged in the block 4.
- the package 7 being formed is held by a peg 11.
- the scissor elements 12 are so positioned to remove the excess yarn so that the portion of sucked yarn 8 is of a suitable length for rejoining as required for reinstatement of the spinning process.
- Two optical sensors 14, one emitting and one receiving, are disposed facing each other to form an optical light curtain which when interrupted by the formation cone 5 halts the upward movement of the package 7 being formed to position it correctly under the suction cap 3.
- a control mechanism block 15 of known type is able to move the support peg 11 for the package 7 vertically upwards and downwards and also able to rotate said peg 11 in the opposite direction to that in which the yarn is being wound so as to disengage and release the broken yarn end reliably and rapidly.
- Said mechanism 15 is also able to generate, pneumatically or electrically, a reciprocating oscillatory movement of limited amplitude about the position established by the optical sensors 14 to enable the formation cone 5 to be struck by the air jets of the nozzles 1 more effectively.
- a locking screw 16 for each pipe 2 allows, when slackened, the exact positioning of the blowing nozzle 1 on a guide support 21 by axially and angularly adjusting each nozzle 1 relative to the formation cone 5 such that each air jet strikes the formation cone 5 with high efficiency and in collaboration with the other nozzles.
- 18 is the direction of rotation of the support peg 11 and thus of the package 7 by the block 15, this direction being advantageously the opposite of that in which the yarn 8 is wound onto the package 7 being formed;
- 20 is the arrow indicating the vertical raising of the package 7 until its formation cone 5 interrupts the light beam extending between the optical sensors 14.
- the guide support 21 for the pipes 2 is fixed to the outer surface of the suction cap 3.
- Said carriage is movable along the spinning machine on runways comprising one or more rails of any shape, cooperating with suitable rolling means such as wheels, rollers or equivalent means.
- suitable rolling means such as wheels, rollers or equivalent means.
- the yarn rejoining carriage is driven to and fro to patrol along the spindles.
- the carriage apparatus checks by sensor means known in the art whether the yarn is present or not in each spinning spindle.
- the carriage When it detects the lack of one of the yarns the carriage is halted at the spindle where the yarn has been found to be broken and the mechanism for initiating the rejoining procedure is started.
- This procedure involves stopping the spindle and extracting the package 7 being formed from the spindle line and locating it on the support peg 11 inside the carriage apparatus in a position suitable for seeking and withdrawing the broken yarn end.
- the peg 11 together with the block 15 of the control mechanism are located in a lower waiting position.
- the control mechanism 15 When the package 7 has been mounted on the peg 11 the control mechanism 15 is operated to vertically raise the package 7 being formed in the direction of the arrow 20 until its formation cone 5 intercepts and obscures the light beam or optical curtain between the facing sensors 14.
- the blowing nozzles 1 When the light beam is intercepted the blowing nozzles 1 are activated and at substantially the same time the control mechanism 15 effects the rotation of the package 7 in the direction of the arrow 18 and suction is applied to the cap 3 and duct 6, this latter being connected to a vacuum pump or similar member, or to any air suction main.
- the rotation of the package 7 enables its entire frusto-conical surface 5 to be effectively exposed to the air jets leaving the nozzles 1, which by virtue of their overall helical arc arrangement create an air current of ascending vortex type.
- the rotation of the package 7 is advantageously of increasing intensity, ie initially it comprises a few slow rotations necessary to give the blowing nozzles 1 time to disentangle the broken yarn end from the formation cone 5 followed a moment after by a rotation sufficiently rapid to drag along the suction duct the length necessary for passing the yarn 8 through the light barrier 10 and through the scissor elements 12.
Description
- This invention relates to a device for seeking and withdrawing a broken yarn end on a package being formed in order to unwind a yarn length sufficient to allow a rejoining operation to take place for automatically reinstating the spinning process in a continuous ring spinning machine.
- In textile manufacturing operations for various production purposes it is necessary to seek and release the end of a yarn held fixed in windings which overall form a yarn package.
- This is necessary in ring spinning machines when the yarn breaks and has to be rejoined to automatically reinstate the spinning process.
- Automatic carriage apparatus for rejoining broken yarns in ring spinning machines is already known in the art.
- One of the improvements towards which the present invention tends is in the seeking and withdrawal of a broken yarn end on a package being formed, from which a length is unwound sufficient to complete the rejoining cycle with maximum reliability and speed of implementation, and avoiding any need for unproductive repetition of the operation.
- In a ring spinning machine for natural or synthetic fibres, during the rejoining of broken yarns it is necessary to bring an actual yarn into contact with a fascicle of textile fibres which has no consistency until the twist of the ring binds the individual fibres together. As the fascicle of textile fibres cannot itself be withdrawn from the feed zone at the exit of the drafting rollers because it would undergo certain breakage, it is absolutely necessary to use the yarn already collected on the package being formed and unwind a part of it to be able to reach the zone for its joining to the fascicle of textile fibres close to the exit of the feed rollers.
- It is therefore necessary to find the broken yarn end and withdraw it by unwinding a length of it from the package which is at least sufficient to cover the distance between the package and the fascicle of textile fibres fed by the feed rollers.
- Devices are already known in the art for disengaging and releasing the broken yarn lying on the surface of the package under formation.
- Said known devices either do not ensure perfect preparation of the yarn under all conditions, or require a considerable use of blown air, or comprise blowing nozzles or sucker elements mounted in a fixed position and therefore unable to be operationally adapted to the variable position of the formation cone on whose surface the broken yarn end to be withdrawn is retained. It is apparent that in this latter case the separation action of the blowing nozzles or sucker elements extends only partly over the surface of the formation cone, or in the limit not at all, with the result that the yarn withdrawal device does not operate effectively.
- Other devices of the known art include blower and/or sucker elements aided by blades of various materials which rub against the package surface, ie against the wound yarn layers, in an attempt to release the broken yarn end.
- However the contact pressure of these devices often results in damage to the yarn at several points along the wound surface layers, so creating portions of reduced strength which exert negative influence during the subsequent transformation passages towards the finished product. The aforesaid known devices, especially in the case of yarn which easily felts, have therefore been found unable to sufficiently release the end of a yarn fixed on the package cone.
- FR-A-2 216 208 discloses a device for seeking and withdrawing a yarn end from a package, having the features of the preamble of
claim 1. In the known device the nozzles are arranged concentrically to each other with a component direction in the axial direction of the package, so as to direct the air current onto the external surface of the package and release the yarn end without the need of simultaneously causing the package to be rotated. The released end is then sucked into the suction tube. - The location of the nozzles, which act substantially on a same circle, may however not be able to withdraw the yarn under any circumstances. To be sure to reach effective withdrawal it may be necessary to continuously vary the position of the package relative to the nozzles by moving the package up and down. This, on the other hand, may cause uncertainty about the real length of yarn withdrawn and may create problems in the subsequent joining stage, besides complicating the construction of the device.
- The object of the present invention is to provide a device by which the broken yarn end adhering to the surface of the package formation cone is reliably released and at the same time a yarn portion of sufficient length is unwound to complete the rejoining cycle by which the spinning operation can go to completion. A further object of the invention is to provide a device which when compared to the devices of the known art is constructionally simple and allows the necessary adjustments to be easily made as the geometrical parameters of the package being formed vary and as the type of yarn being wound varies.
- A device according to the present invention has the features claimed in
claim 1. - The device may also comprise a control mechanism arranged both to vertically move a package support peg upwards or downwards and to intermittently rotate said support peg to subject the entire surface of the formation cone to the action of the air jets from the blowing nozzles.
- The control source for rotating the peg and thus the bobbin may provide two rotary movements: firstly a slow rotation for seeking the end of the yarn and extricating it from the wound layers of the formation cone, and then a sufficiently rapid rotation to release into the suction duct the yarn length required for rejoining, this rapidity resulting not only in a reduction in the cycle time but also preventing the yarn fibrillating substantially under the action of the air stream.
- The pipes of the blowing nozzles may be coupled to respective guide supports fixed to the outer surface of the suction cap, the couplings allowing the pipes both to slide vertically and to rotate angularly to be able to perfectly adjust the operating directions of the air jets blowing against the zone in which the broken yarn end is to be found, on the basis of the dimensions of the package formation cone and the type of yarn wound.
- According to a further embodiment, the control mechanism located at the base of the package support peg may be able to generate an oscillatory reciprocating motion of limited amplitude straddling the position which the formation cone has assumed, this being done while the package is being rotated about its axis and in the opposite direction to the yarn winding.
- The invention is described hereinafter on the basis of the embodiment shown diagrammatically on the figures of the accompanying drawings which schematically illustrate the characteristics of the invention. In the accompanying drawings:
- Figure 1 is a diagrammatic isometric perspective view showing both the device for seeking and withdrawing a broken yarn end and the package under formation, at the moment in which the package formation cone has already been positioned along the helical arc of the blowing nozzles and the yarn end has already been conveyed through the suction duct to the sensing and cutting block;
- Figure 2 is a cross-sectional view from above, taken on the line A-A of Figure 1, showing a part of the device of the present invention.
- In the figures identical elements carry the same reference numerals. Again, for reasons of overall clarity, those parts not necessary for understanding the invention are omitted from the figures or are shown only generically as they are of known type.
- 1 designates the blowing nozzles which are located to surround the
formation cone 5 and which operate by blowing jets of air onto the surface of theformation cone 5. Respective position-adjustable pipes 2 of the blowingnozzles 1 are supported by asuction cap 3 under which the upper end of thepackage 7 is located. Said cap has its lower profile located above the air jets of thenozzles 1 and tapers upperly to engage asuction duct 6 which extends up to ablock 4 containing, in a first zone, sensing members for theyarn 8 and, in a second zone, cuttingelements 12. Thisblock 4 is the source of an air stream for conveying the end of theyarn 8 through a photo-electric or inductive sensor 9 and into a gap between the cutting blades of thescissor elements 12. On the surface of thepackage formation cone 5 the broken yarn end is retained. Thesuction duct 6 is of a length substantially equal to the length of yarn to be unwound and sucked from thepackage 7, and connects thesuction cap 3 to theblock 4. Theyarn 8 sucked from thepackage 7 is unwound by a length sufficient to allow the sucked yarn to be sensed by alight barrier 10 arranged in theblock 4. Thepackage 7 being formed is held by apeg 11. Thescissor elements 12 are so positioned to remove the excess yarn so that the portion of suckedyarn 8 is of a suitable length for rejoining as required for reinstatement of the spinning process. Twooptical sensors 14, one emitting and one receiving, are disposed facing each other to form an optical light curtain which when interrupted by theformation cone 5 halts the upward movement of thepackage 7 being formed to position it correctly under thesuction cap 3. Acontrol mechanism block 15 of known type is able to move thesupport peg 11 for thepackage 7 vertically upwards and downwards and also able to rotate saidpeg 11 in the opposite direction to that in which the yarn is being wound so as to disengage and release the broken yarn end reliably and rapidly. Saidmechanism 15 is also able to generate, pneumatically or electrically, a reciprocating oscillatory movement of limited amplitude about the position established by theoptical sensors 14 to enable theformation cone 5 to be struck by the air jets of thenozzles 1 more effectively. Alocking screw 16 for eachpipe 2 allows, when slackened, the exact positioning of the blowingnozzle 1 on aguide support 21 by axially and angularly adjusting eachnozzle 1 relative to theformation cone 5 such that each air jet strikes theformation cone 5 with high efficiency and in collaboration with the other nozzles. 18 is the direction of rotation of thesupport peg 11 and thus of thepackage 7 by theblock 15, this direction being advantageously the opposite of that in which theyarn 8 is wound onto thepackage 7 being formed; 20 is the arrow indicating the vertical raising of thepackage 7 until itsformation cone 5 interrupts the light beam extending between theoptical sensors 14. The guide support 21 for thepipes 2 is fixed to the outer surface of thesuction cap 3. - The following description of operation given with reference to the said figures relates firstly to that which is new and therefore takes into consideration only the device of the present invention which seeks and withdraws the broken yarn end on a package being formed as required for the subsequent rejoining of the yarn to the roving, it being understood that additional devices are required for the other operating stages prior and subsequent to the search for the broken yarn and that these do not form part of the description.
- It is known to associate a ring spinning machine with a carriage apparatus for automatically rejoining yarns which break during the operation of the spinning spindles. The carriage houses various devices required for the various operational stages involved in rejoining, and therefore also houses the device of the present invention.
- Said carriage is movable along the spinning machine on runways comprising one or more rails of any shape, cooperating with suitable rolling means such as wheels, rollers or equivalent means. During the operation of the spinning machine, the yarn rejoining carriage is driven to and fro to patrol along the spindles. As it patrols, the carriage apparatus checks by sensor means known in the art whether the yarn is present or not in each spinning spindle.
- When it detects the lack of one of the yarns the carriage is halted at the spindle where the yarn has been found to be broken and the mechanism for initiating the rejoining procedure is started. This procedure involves stopping the spindle and extracting the
package 7 being formed from the spindle line and locating it on thesupport peg 11 inside the carriage apparatus in a position suitable for seeking and withdrawing the broken yarn end. Thepeg 11 together with theblock 15 of the control mechanism are located in a lower waiting position. When thepackage 7 has been mounted on thepeg 11 thecontrol mechanism 15 is operated to vertically raise thepackage 7 being formed in the direction of thearrow 20 until its formation cone 5 intercepts and obscures the light beam or optical curtain between the facingsensors 14. When the light beam is intercepted the blowingnozzles 1 are activated and at substantially the same time thecontrol mechanism 15 effects the rotation of thepackage 7 in the direction of thearrow 18 and suction is applied to thecap 3 andduct 6, this latter being connected to a vacuum pump or similar member, or to any air suction main. The rotation of thepackage 7 enables its entire frusto-conical surface 5 to be effectively exposed to the air jets leaving thenozzles 1, which by virtue of their overall helical arc arrangement create an air current of ascending vortex type. This latter is channeled along the entire surface of thesuction cap 3 at a velocity which increases both because of the effect of the suction zone and because of the effect of the upward taper of the frusto-conical section of thecap 3 which is connected at its top to thesuction duct 6. In addition to the rotation of thepackage 7 thecontrol mechanism 15 generates a reciprocating oscillatory motion of limited amplitude about the position assumed by thepackage 7 under thesuction cap 3 to attain even greater efficiency in disengaging and releasing the broken yarn end. - The rotation of the
package 7 is advantageously of increasing intensity, ie initially it comprises a few slow rotations necessary to give the blowingnozzles 1 time to disentangle the broken yarn end from theformation cone 5 followed a moment after by a rotation sufficiently rapid to drag along the suction duct the length necessary for passing theyarn 8 through thelight barrier 10 and through thescissor elements 12. - The presence of the yarn excites the
photoelectric barrier 10, which simultaneously deactivates the blowingnozzles 1, thecontrol mechanism 15 and, simultaneously or immediately afterwards, thescissor elements 12. - The aforesaid stages could in fact at least partly overlap in time. Immediately following the cutting of the
yarn 8 by thescissor elements 12 thepackage 7 begins to descend by the action of thecontrol mechanism 15. On termination of its descent, the other operational stages follow in accordance with a programmed cycle under the action of various known devices, to complete the automatic rejoining of the yarn withdrawn by the device of the invention to the fascicle of textile fibres leaving the drafting rollers, in order to reinstate the spinning process on the spindle at which the yarn had accidentally broken. The described embodiment has been given by way of non-limiting example only. It is apparent that modifications can be made by experts of the art to the details of the device within the scope of the appended claims.
Claims (4)
- A device for seeking and withdrawing a broken yarn end on a package (7) being formed and drawing off by suction a yarn length required to allow a rejoining operation to take place for automatically reinstating the spinning process in a continuous spinning machine, comprising:- a series of blowing nozzles (1) located to surround the package cone (5);- a suction cap (3) having its lower profile located above the air jets produced by said nozzles (1);- a suction duct (6) in fluid communication with said suction cap (3) for receiving a length of yarn (8) unwound and sucked from the package (7) for the subsequent rejoining operation;
characterised in that:- the nozzles (1) are arranged along a line geometrically similar to a helical arc;- a block (4) is connected to the suction cap (3) by the suction duct (6), said block (4) having a first zone for sensing the yarn (8) by means of a sensing light barrier or an electric field (9,10) and a second zone controlled by said first zone and provided with cutting means (12) for cutting the end of the sucked yarn (8) at a position substantially corresponding to the length of yarn (8) required for rejoining; and- two facing optical sensors (14) are provided which produce a barrier light beam for sensing the presence of the package cone (5) in order to position said cone (5) along the helical arc of the blowing nozzles (1). - A device as claimed in claim 1, characterised in that it further comprises a control mechanism both for vertically moving a package support peg (11) upwards and downwards relative to said suction cap (3) and for intermittently rotating said support peg (11) about the axis thereof to subject the entire surface of the cone (5) to the action of the air jets from the blowing nozzles (1).
- A device as claimed in claim 1, characterised in that the pipes (2) of the blowing nozzles (1) are axially slidable and angularly rotatable in respective guide supports (21) fixed to the outer surface of the suction cap (3) for adjusting the operating directions of the air jets blowing against the package cone (5) on the basis of the shape and dimensions of the package cone (5) and the type of yarn (8) wound.
- A device as claimed in claims 1 and 2, characterised in that said support peg (11) is further movable with an oscillatory reciprocating motion of limited amplitude straddling the position which the cone (5) has assumed by the action of the optical sensors (14), while the package (7) is being rotatable about its axis in the direction (arrow 18) opposite to the yarn winding direction.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT2308887 | 1987-12-18 | ||
IT23088/87A IT1223532B (en) | 1987-12-18 | 1987-12-18 | DEVICE FOR SEARCHING THE SPLIT HEAD ON A SPOOL IN TRAINING |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0322008A1 EP0322008A1 (en) | 1989-06-28 |
EP0322008B1 true EP0322008B1 (en) | 1992-09-09 |
Family
ID=11203653
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP88202694A Expired - Lifetime EP0322008B1 (en) | 1987-12-18 | 1988-11-25 | Device for seeking a broken yarn end on a forming package |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0322008B1 (en) |
DE (1) | DE3874505T2 (en) |
ES (1) | ES2035911T3 (en) |
GR (1) | GR3005980T3 (en) |
IT (1) | IT1223532B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5630559A (en) * | 1994-08-10 | 1997-05-20 | W. Schlafhorst Ag & Co. | Device for locating a free end of yarn wound on a cop |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104213320B (en) * | 2014-08-20 | 2016-05-18 | 浙江保利针织有限公司 | Wire passing device in knitting machine |
CN107381232A (en) * | 2017-08-31 | 2017-11-24 | 山东华兴纺织集团有限公司 | Yarn tail change device and from network change machine |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2210469A1 (en) * | 1972-03-04 | 1973-09-06 | Zinser Textilmaschinen Gmbh | DEVICE FOR REMOVING THREAD ENDS ON THE WINDING BODIES |
CH569656A5 (en) * | 1973-02-02 | 1975-11-28 | Heberlein Hispano Sa | |
DE3013174A1 (en) * | 1980-04-03 | 1981-10-15 | Zinser Textilmaschinen Gmbh, 7333 Ebersbach | Suction-bell for pneumatic retrieval of broken yarn - has flexible shield plate attached to lower lip |
US4576341A (en) * | 1982-03-08 | 1986-03-18 | Murata Kikai Kabushiki Kaisha | Cop transporting systems for an automatic winder |
DE3314278A1 (en) * | 1983-04-20 | 1984-10-25 | Zinser Textilmaschinen Gmbh, 7333 Ebersbach | THREADED BLOW-OFF NOZZLE |
DE3316108A1 (en) * | 1983-05-03 | 1984-11-08 | Zinser Textilmaschinen Gmbh, 7333 Ebersbach | BLOW-OFF NOZZLE |
JPS6290338A (en) * | 1985-10-14 | 1987-04-24 | Kurabo Ind Ltd | Apparatus for blowing yarn end of full bobbin cheese in open-end spinning frame |
-
1987
- 1987-12-18 IT IT23088/87A patent/IT1223532B/en active
-
1988
- 1988-11-25 EP EP88202694A patent/EP0322008B1/en not_active Expired - Lifetime
- 1988-11-25 ES ES198888202694T patent/ES2035911T3/en not_active Expired - Lifetime
- 1988-11-25 DE DE8888202694T patent/DE3874505T2/en not_active Expired - Fee Related
-
1992
- 1992-10-14 GR GR920402302T patent/GR3005980T3/el unknown
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5630559A (en) * | 1994-08-10 | 1997-05-20 | W. Schlafhorst Ag & Co. | Device for locating a free end of yarn wound on a cop |
Also Published As
Publication number | Publication date |
---|---|
IT8723088A0 (en) | 1987-12-18 |
DE3874505T2 (en) | 1993-02-04 |
DE3874505D1 (en) | 1992-10-15 |
IT1223532B (en) | 1990-09-19 |
ES2035911T3 (en) | 1993-05-01 |
EP0322008A1 (en) | 1989-06-28 |
GR3005980T3 (en) | 1993-06-07 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4340187A (en) | Bobbin changing apparatus | |
CN113755959B (en) | Spinning winding device | |
US8915055B2 (en) | Spinning machine and a process for removing an end section of a yarn of a spinning machine prior to a subsequent piecing process | |
CN110067054B (en) | Method and device for threading yarn ends into ring travelers | |
US4127983A (en) | Yarn guiding and threading mechanisms for use with textile yarn processing machines | |
US4638955A (en) | Yarn handling apparatus for winding machine | |
CN110093696B (en) | Device and method for transferring yarn ends and ring spinning machine | |
EP3708701A1 (en) | A device, a system and method for resurrection of a yarn breakage in a ring spinning machine | |
US5109662A (en) | Operating method and apparatus for the automated removal of yarn remnants from winding tubes by an automated maintenance and servicing device traveling along a textile yarn processing machine | |
JP4988745B2 (en) | Threading method | |
US4921179A (en) | Method and apparatus for positioning a yarn end for unwinding | |
US4120142A (en) | Yarn injection mechanism for cooperation with pneumatic yarn threading devices of a textile yarn processing machine | |
EP0322008B1 (en) | Device for seeking a broken yarn end on a forming package | |
EP3321221B1 (en) | Method for depositing a yarn end on a bobbin in a defined manner, a device and a spinning and winding machine for performing it | |
US5396758A (en) | Method of respinning-in on open-end spinning machines and a device for carrying out the method | |
EP1932793B1 (en) | Device and process for preparing bobbins to feed to an automatic winder | |
US5090189A (en) | Method and apparatus for preparing a yarn package for a subsequent yarn restarting operation | |
US5333441A (en) | Method and apparatus for restarting a textile spinning machine winding operation following a yarn break | |
JPH0351331A (en) | Method and apparatus for yarn handling in fine spinning frame | |
US4339089A (en) | Yarn winding apparatus and method | |
CN113939619B (en) | Service robot for ring spinning machine, ring spinning machine and method for operating service robot | |
US5170617A (en) | Method and apparatus for producing packages | |
JPH0359125A (en) | Method and apparatus for automatic cleaning of protective pot and balloon restricting device of spindle for double twistor | |
CN1087316A (en) | Remove the device of terminal yarn coil | |
EP0960964A1 (en) | Method to automatically re-connect the forming yarn in a spinning machine and relative device |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): BE CH DE ES FR GB GR LI |
|
17P | Request for examination filed |
Effective date: 19891214 |
|
17Q | First examination report despatched |
Effective date: 19910711 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): BE CH DE ES FR GB GR LI |
|
REF | Corresponds to: |
Ref document number: 3874505 Country of ref document: DE Date of ref document: 19921015 |
|
ET | Fr: translation filed | ||
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 19921113 Year of fee payment: 5 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: BE Payment date: 19921118 Year of fee payment: 5 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 19921120 Year of fee payment: 5 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 19921124 Year of fee payment: 5 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GR Payment date: 19921127 Year of fee payment: 5 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: ES Payment date: 19921130 Year of fee payment: 5 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: CH Payment date: 19930224 Year of fee payment: 5 |
|
REG | Reference to a national code |
Ref country code: GR Ref legal event code: FG4A Free format text: 3005980 |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FG2A Ref document number: 2035911 Country of ref document: ES Kind code of ref document: T3 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed | ||
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Effective date: 19931125 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: ES Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION Effective date: 19931126 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LI Effective date: 19931130 Ref country code: CH Effective date: 19931130 Ref country code: BE Effective date: 19931130 |
|
BERE | Be: lapsed |
Owner name: SAVIO S.P.A. Effective date: 19931130 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GR Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY Effective date: 19940531 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 19931125 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Effective date: 19940729 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Effective date: 19940802 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |
|
REG | Reference to a national code |
Ref country code: GR Ref legal event code: MM2A Free format text: 3005980 |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FD2A Effective date: 20010301 |