EP0355887B1 - Apparatus and method for conveying winding tubes to ring spinning spindles and aligning them therewith - Google Patents
Apparatus and method for conveying winding tubes to ring spinning spindles and aligning them therewith Download PDFInfo
- Publication number
- EP0355887B1 EP0355887B1 EP89201987A EP89201987A EP0355887B1 EP 0355887 B1 EP0355887 B1 EP 0355887B1 EP 89201987 A EP89201987 A EP 89201987A EP 89201987 A EP89201987 A EP 89201987A EP 0355887 B1 EP0355887 B1 EP 0355887B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tubes
- flat elements
- elements
- pegs
- wound yarn
- 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
- 238000004804 winding Methods 0.000 title claims description 43
- 238000007378 ring spinning Methods 0.000 title claims description 23
- 238000000034 method Methods 0.000 title claims description 7
- 238000009987 spinning Methods 0.000 claims description 55
- 230000033001 locomotion Effects 0.000 claims description 28
- 230000007246 mechanism Effects 0.000 claims description 12
- 230000005484 gravity Effects 0.000 claims description 2
- 238000004321 preservation Methods 0.000 claims 1
- 230000009471 action Effects 0.000 description 12
- 238000010276 construction Methods 0.000 description 6
- 230000004048 modification Effects 0.000 description 6
- 238000012986 modification Methods 0.000 description 6
- 230000000903 blocking effect Effects 0.000 description 3
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 230000004913 activation Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000004753 textile Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Images
Classifications
-
- 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
- D01H9/18—Arrangements for replacing or removing bobbins, cores, receptacles, or completed packages at paying-out or take-up stations ; Combination of spinning-winding machine for supplying bobbins, cores, receptacles, or completed packages to, or transporting from, paying-out or take-up stations ; Arrangements to prevent unwinding of roving from roving bobbins
- D01H9/187—Arrangements for replacing or removing bobbins, cores, receptacles, or completed packages at paying-out or take-up stations ; Combination of spinning-winding machine for supplying bobbins, cores, receptacles, or completed packages to, or transporting from, paying-out or take-up stations ; Arrangements to prevent unwinding of roving from roving bobbins on individual supports, e.g. pallets
Definitions
- This invention relates to an apparatus and a method for conveying both winding tubes empty of wound yarn and winding tubes filled with wound yarn on holding pegs rigidly fixed to the upper part of a plurality of flat elements and for aligning the tubes in correspondence with the spinning spindles of a ring spinning machine, said apparatus being arranged to serve and to cooperate with an automatic doffing device in the ring spinning machine.
- This apparatus for conveying and positioning winding tubes and the pegs holding said winding tubes, is used in operational correlation with an automatic doffing device which automatically removes the winding tubes filled with wound yarn from the spindles and replaces them with a like number of tubes empty of wound yarn to allow further yarn collection.
- Said spindles are normally the spinning machine of a ring spinning machine.
- the tubes when filled with yarn are the so-called yard packages, which accumulate the yarn spun by the individual spindles.
- Ring spinning machines are already known which incorporate automatic doffing devices.
- the preference is for a device with gripper elements projecting from a longitudinal bar which is driven with the necessary movement for simultaneously withdrawing all the tubes filled with wound yarn from the spindles and simultaneously positioning tubes empty of wound yarn on all said spinning spindles in suitable sequence. After each gripper element has handled one tube filled with wound yarn, it is made to grip a tube empty of wound yarn and mount it on the spindle.
- the gripper elements the levers or the other means of the automatic doffing device do not form part of the present invention and can therefore be of any constructional type suitable for this purpose. They will therefore be neither represented on the accompanying drawings nor described in the description.
- the automatic doffing device in ring spinning machines is known to function in operational correlation with conveyors in the form of two endless flexible steel belts, one for each spinning face, which are driven by drive rollers along suitable guides carried by a fixed structure which extends longitudinally along the entire spindle line.
- Said flexible belt conveyors comprise a plurality of pegs fixed to them at regular intervals for holding and supporting both the tubes filled with wound yarn which the gripper elements of the automatic doffing device have removed from the relative spindles, and for receiving and holding the tubes empty of wound yarn which are to replace the yarn packages extracted from the spindles.
- the flexible belt conveyors which extend along the entire length of the machine between the respective ends, can move horizontally and parallel to the machine length to bring the pegs coaxial with the axes of the various spindles.
- the flexible belts are made to resume their intermittent or continuous movement along the front sides of the spinning machine, and as this latter again starts to newly accumulate wound yarn the tubes filled with wound yarn are unloaded from the respective support pegs by known means and also, by known means, new tubes empty of wound yarn are loaded onto the pegs.
- a conveyor apparatus of this type with flexible belts for moving the winding tubes is presented and described for example in US-A-3 382 659.
- current ring spinning machines can comprise many hundreds of spindles along a single working face. When the tubes are full of wound yarn they are withdrawn from the relative spindles and deposited in ordered arrangement on a belt or conveyor element.
- the conveyor system or device of the aforesaid U.S. patent and others of the known art operate on the friction drive principle. Devices of this construction are subject to more or less extensive slippage if the conveying length is long. To limit this slippage to acceptable values a considerable increase in the installed tension of the flexible conveyor belt is required in order to increase the contact pressure on the drive roller and so increase the friction force along the contact arc between said drive roller and the inner surface of the flexible belt which wraps it.
- This belt is susceptible to longitudinal elastic deformation, which increases as the installed tension is increased and therefore gives rise to a increasing linear non-uniformity in the distance between the peg which hold the winding tubes. This compromises the operation of the entire conveying system during the action of the aforesaid automatic doffing device in the ring spinning machine.
- said lateral guides have to act with force-against the longitudinal edges of the flexible belt to retain it within the guide, and this results in rubbing friction which because of its abrasive effect is damaging for the entire flexible belt and increases the power required to drive said belt.
- the object of the present invention is to obviate the aforesaid drawbacks by providing an apparatus and a method for conveying winding tubes filled with wound yarn or empty of wound yarn and for aligning them in correspondance with the spinning spindles along the faces of a ring spinning machine, which have the following advantages:
- 1 is a flat element comprising on its upper part holding pegs, of which in the proposed preferred application one peg holds and supports the winding tube empty of wound yarn and the other peg holds and supports the winding tube filled with wound yarn.
- Said flat element 1 rests by gravity on the upper surface of an underlying mobile drive belt.
- 2 is the tube empty of wound yarn mounted on one of the two pegs which are rigidly fixed to the flat element 1.
- 3 is the machinery housing of the ring spinning machine having two opposing spinning faces formed from some hundreds of adjacent spindles one adjacent the other.
- 4 is the last element of the articulated chain ready to engage with the lever mechanism of the tensioning brake.
- 5 and 6 are the mobile flat belts arranged along the respective spinning faces to support and drive the articulated chain of mutually connected flat elements 1. Said endless mobile belts can be advantageously driven with continuous motion and thus free of electrical or electronic locks linked to the operating cycle sequences relative to the withdrawal, insertion and positioning devices for the winding tubes.
- 7 are the end structures, one opposite the other, of the ring spinning machine.
- 8 and 10 are arrows indicating the respective directions of motion of the upper branches of the two endless mobile belts 6 and 5.
- 9 and 11 are the respective idle return rollers for the two endless mobile belts 6 and 5.
- 12 and 14 are the respective drive rollers for driving the endless mobile belts.
- 15 is the block for transmitting motion to the drive rollers 12 and 14.
- 16 are the pegs for holding and supporting the winding tubes 2. Said pegs 16 are fixed rigidly to the flat elements 1 by a lower shank pin 17 about which a connecting rod 25 is pivotally engaged to form the swivel joint for two consecutive flat elements 1.
- 18 is a threaded element rigid with a respective flat element 1 and screwed into the respective connecting rod 25 to allow the precise and adjustable axial positioning of two consecutive flat elements 1.
- 19 is a position transducer which cooperates with identifiable means 21 applied to the lateral surfaces of the flat elements 1.
- 20 is the drive source for operating the drive rollers 12 and 14.
- 22 is the support slide for the lever mechanism of the tensioning brake. Said slide 22 is normally stationary in position 22 and moves into position 22a when it is required to move the lever mechanism of the tensioning brake together with the articulated chain through a distance equal to the distance between the axes of the two pegs 16 fixed on a single flat element 1, ie the pitch of said consecutive pegs 16.
- 24 are blocking levers operated by known means for engaging between the flat elements 1 and causing them to advance intermittently.
- 25 is the connecting rod which connects two consecutive flat elements and which at one end is connected to the pin shank 17 to form the swivel joint and at the other end 13 connected to the threaded element 13 to allow adjustable axial positioning.
- 26 is the articulated chain formed from the plurality of flat elements 1 which surround the ring spinning machine.
- 27 (Fig.1) is the device which contains both the accumulation of tubes 2 empty of wound yarn and the known means for mounting said tubes 2 in the direction of the arrow 46 onto the pegs 16 of the flat elements 1.
- 28 is the container bin for the tubes 50 filled with wound yarn which are conveyed into it by the chute 29 after being seized and withdrawn from the pegs 16 by any known withdrawal device 52, the linkages or operating means of which are located in the block 30.
- 32 (Fig.3-5) is the actuator which moves the support slide 22 for the tensioning brake.
- a tube filled with wound yarn which is withdrawn from a spindle by the gripper element of the automatic doffing device and held on a peg 16 to be then moved by the articulated chain 26 to its position for withdrawal and conveying in the direction of the arrows 48 to place it in the bin 28.
- 33 is a section bar or structure of suitable shape which acts as a lateral guide track, and along the portions free of the mobile belt acts as the track for supporting the flat elements 1 of the articulated chain 26.
- Said guide and support section bar 33 passes around the end structures 7 of the spinning machine and about the whole spinning machine forming an endless slide track.
- 34 is the rod of the actuator 32.
- 35 and 36 are the levers of the tensioning brake lever mechanism which engage with the frusto-conical sides of the last flat element 4. Said engagement is implemented by the action of the actuator 44, which by pressing the levers 41 and 42 pivoted on the pivots 39 and 40 causes the levers 35 and 36 to gradually approach the frusto-conical sides of the flat element 4 with the aid of the elastic elements 43.
- 37 and 38 are two mechanical positioning elements in the form of brackets fixed rigidly to the levers 41 and 42, against said brackets there being positioned the two levers 35 and 36 at the end of their engagement with the flat element 4.
- 6a, 6b and 6c (Fig.8) are endless mobile flat belts which can replace the belt 6 and which together cover one whole spinning face, their motion being perfectly identical.
- 5a, 5b and 5c are endless mobile flat belts which can replace the belt 5 and which together cover the other spinning face, their motion being perfectly identical. Their upper branches are driven in the direction indicated by the arrow 10. 55 are optional mobile flat belts in a transverse position, they being driven substantially with the same motion as the longitudinal belts 5 and 6.
- the winding tubes 2 empty of wound yarn are already, as shown in Figure 1, arranged in a position in front of the spinning spindles awaiting operational correlation with the automatic doffing device which when a winding is complete replaces the tubes filled with wound yarn and mounted on the relative spindles, with said tubes 2 empty of wound yarn and held stationary on the pegs of the articulated chain 26.
- the winding tubes 2 are held in a line on alternate pegs at a distance apart equal to the spindle pitch, the spindle pitch being the distance between the axes of two adjacent spindles.
- the gripper elements firstly remove all the tubes filled with wound yarn simultaneously from both spinning faces by withdrawing them from their spindles and immediately mounting them on the free pegs 16 which alternate with the tubes 2 empty of wound yarn.
- Said free pegs 16 are stationary in positions perfectly coaxial with the axes of the various spindles, this correct precise location being determined by the clamping action of the levers 35 and 36 of the tensioning brake (see Figure 5), while the endless belts 5 and 6 exercise by their movement according to arrows 8 and 10 the tensioning and aligning action on the individual flat elements 1.
- the gripper elements are released and rise from them, after placing them on the relative pegs 16, by the distance needed not to obstruct the subsequent movement of the articulated chain 26.
- the same gripper elements are preferably made to grip tubes empty of wound yarn and mount them on the spindles.
- the gripper elements can be of any construction suitable for the purpose. However it is preferable to use gripper elements of a type such as those described in EP-A-0 290 063.
- the actuator 32 is then activated to move the slide 22 into the position 22a (see Figure 5, dashed-line position).
- the entire lever mechanism of the tensioning brake which continues to clamp the flat element 4, moves rigidly with said slide 22 to produce the aforesaid movement of the articulated chain 26. This latter advances through one half the spindle pitch by the dragging action of the endless mobile belts 5 and 6.
- the mobile belts 5 and 6 are preferably operated continuously at least during the entire doffing cycle so that by the friction dragging action which they exert on the flat elements 1 they produce a continuous positioning tension throughout the articulated chain 26.
- Said positioning tension which arises by the simultaneous cooperation between the clamping action of the levers 35 and 36 of the tensioning brake and the dragging movement according to arrows 8 and 10 of the endless belts 5 and 6, is necessary to preserve the alignment of the flat elements 1 along the two horizontal longitudinal sections of the spinning faces of the spinning machine, and also to ensure operational coaxiality between the holding pegs 16 and the axes of the many hundreds of spindles.
- the expulsion of the individual winding tubes 50 from the respective pegs 16 of the articulated chain 26 can be continuous or intermittent in known manner.
- the insertion mechanism and pickup device can be of any known type suitable for the purpose.
- Said endless mobile belts 5 and 6 are driven by the same drive source 20 (see Figures 1 and 6) which by way of a reduction gear and inverter block 15 causes the two drive pulleys 12 and 14 to rotate substantially synchronized but in reverse directions. These latter drive the two endless belts 5 and 6 at a substantially identical rate, their upper branches moving in opposite directions in accordance with the arrows 10 and 8.
- the articulated chain 26 is adjusted in length by making micrometric adjustments on the screw connections between the elements 18 and the connecting rods 25 of consecutive flat elements 1, this precision then not changing with time because their movement within the apparatus of the present invention does not involve any forced dragging, the sliding of the chain also being smooth about curves because of the facility for considerable swivelling between said flat elements 1 (see Figure 7).
- the belts 5 and 6 shown in Figures 1 and 6 for moving the articulated chain 26 are only one example of the many possible dragging means, such as moving by several short-length belts disposed along the individual spinning faces. They are driven in the same direction and in substantial synchronism along their individual spinning face.
- Figure 8 shows one possible arrangement in which the belts 5a, 5b and 5c are driven in the direction indicated by the arrow 10 whereas the belts 6a,6b and 6c of the opposite spinning face are driven in the direction indicated by the arrow 8.
- Figure 8 also shows the presence of transverse belts 55 which can be installed to improve the movement of the articulated chain 26.
- the aforesaid embodiment involving two or more dragging belts enables two spindle faces, one opposite the other, to be served with a single articulated chain, and a construction of this type cooperating with an automatic doffing device acting simultaneously on both faces is therefore economically interesting.
- an installation can be desirable consisting of a double apparatus of the type according to the invention, one for each spinning face, to cooperate with an automatic doffing device which operates on only one face of the spinning machine independently of the other face, to allow spinning of different batches of yarn.
- Each apparatus in this case extends horizontally about the spindle line of one spinning face in an arrangement comprising a return track for the articulated chain entering and underlying the machinery housing 3 of the spinning machine. Both apparatuses then assume an arrangement symmetrical to each other about the longitudinal axis of the spinning machine.
- the pegs 16 could be fixed one following the other on the flat elements 1 at a distance apart equal to the spindle pitch of the ring spinning machine.
- the gripper elements of the automatic doffing device would firstly remove the tubes filled with wound yarn from the spindle and place them temporarily on stationary pegs fixed to a rod or similar element fixed rigidly to the spinning machine frame, to then grip the tubes empty of wound yarn and fix them onto the spindles, and then again grip the tubes filled with wound yarn and transfer them from the pegs on which they are held to the pegs 16 of the flat elements 1 of the apparatus according to the invention.
- Such an automatic doffing cycle and device are known in the art and thus no further description is necessary. It is apparent that in this latter modification the slide 22 of the tensioning brake would no longer be moved through the aforesaid half spinning spindle pitch.
- the apparatus must also be made compatible with the movement of other elements such as travelling cleaner devices, yarn rejoining trolleys etc.
- the number of pegs 16 fixed on each flat element 1 can vary; the shapes and dimensions of said holding pegs 16 can vary; a single transfer belt could be provided extending along the entire spinning face opposite that spinning face comprising the tensioning brake; a plurality of transfer belts could be provided driven with identical or slightly different speeds; dragging elements other than belt elements could be provided; it would also be possible to provide a different lever mechanism for the tensioning brake; and drive sources could be added or removed to advantageously coordinate the movement of the dragging belts with all the various operating stages of the devices provided in the apparatus of the present invention.
Landscapes
- 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)
Description
- This invention relates to an apparatus and a method for conveying both winding tubes empty of wound yarn and winding tubes filled with wound yarn on holding pegs rigidly fixed to the upper part of a plurality of flat elements and for aligning the tubes in correspondence with the spinning spindles of a ring spinning machine, said apparatus being arranged to serve and to cooperate with an automatic doffing device in the ring spinning machine.
- This apparatus, for conveying and positioning winding tubes and the pegs holding said winding tubes, is used in operational correlation with an automatic doffing device which automatically removes the winding tubes filled with wound yarn from the spindles and replaces them with a like number of tubes empty of wound yarn to allow further yarn collection. Said spindles are normally the spinning machine of a ring spinning machine.
- The tubes when filled with yarn are the so-called yard packages, which accumulate the yarn spun by the individual spindles.
- In modern ring spinning machines the tendency is to completely mechanise the operations involved in conveying and withdrawing the yarn-wound tubes or the yarn-free tubes and replace manual operations by suitable automatic devices and equipment.
- Ring spinning machines are already known which incorporate automatic doffing devices.
- Whatever their structure and method of operation, all known devices have the common problem of correctly feeding the winding tubes empty of wound yarn to replace the tubes filled with wound yarn, these latter being automatically withdrawn from the spinning spindles.
- In the present case, the preference is for a device with gripper elements projecting from a longitudinal bar which is driven with the necessary movement for simultaneously withdrawing all the tubes filled with wound yarn from the spindles and simultaneously positioning tubes empty of wound yarn on all said spinning spindles in suitable sequence. After each gripper element has handled one tube filled with wound yarn, it is made to grip a tube empty of wound yarn and mount it on the spindle. The gripper elements the levers or the other means of the automatic doffing device do not form part of the present invention and can therefore be of any constructional type suitable for this purpose. They will therefore be neither represented on the accompanying drawings nor described in the description.
- The automatic doffing device in ring spinning machines is known to function in operational correlation with conveyors in the form of two endless flexible steel belts, one for each spinning face, which are driven by drive rollers along suitable guides carried by a fixed structure which extends longitudinally along the entire spindle line.
- Said flexible belt conveyors comprise a plurality of pegs fixed to them at regular intervals for holding and supporting both the tubes filled with wound yarn which the gripper elements of the automatic doffing device have removed from the relative spindles, and for receiving and holding the tubes empty of wound yarn which are to replace the yarn packages extracted from the spindles.
- The flexible belt conveyors, which extend along the entire length of the machine between the respective ends, can move horizontally and parallel to the machine length to bring the pegs coaxial with the axes of the various spindles.
- It is thus possible to discharge the tubes filled with wound yarn and withdraw the tubes empty of wound yarn by means of the gripper elements of the automatic doffing device.
- When doffing is complete and the tubes empty of wound yarn have been placed on the spindles, the flexible belts are made to resume their intermittent or continuous movement along the front sides of the spinning machine, and as this latter again starts to newly accumulate wound yarn the tubes filled with wound yarn are unloaded from the respective support pegs by known means and also, by known means, new tubes empty of wound yarn are loaded onto the pegs.
- A conveyor apparatus of this type with flexible belts for moving the winding tubes is presented and described for example in US-A-3 382 659.
- By way of example, current ring spinning machines can comprise many hundreds of spindles along a single working face. When the tubes are full of wound yarn they are withdrawn from the relative spindles and deposited in ordered arrangement on a belt or conveyor element.
- For the tube withdrawal and replacement operation to proceed without any difficulty it is necessary for all the tube holding elements fixed to the flexible belt conveyor to assume positions which exactly correspond to the positions in which the gripper elements will make their withdrawal and deposition.
- The conveyor system or device of the aforesaid U.S. patent and others of the known art operate on the friction drive principle. Devices of this construction are subject to more or less extensive slippage if the conveying length is long. To limit this slippage to acceptable values a considerable increase in the installed tension of the flexible conveyor belt is required in order to increase the contact pressure on the drive roller and so increase the friction force along the contact arc between said drive roller and the inner surface of the flexible belt which wraps it. This belt is susceptible to longitudinal elastic deformation, which increases as the installed tension is increased and therefore gives rise to a increasing linear non-uniformity in the distance between the peg which hold the winding tubes. This compromises the operation of the entire conveying system during the action of the aforesaid automatic doffing device in the ring spinning machine.
- In addition, said known belt conveyor devices with rigidly fixed pegs and friction drive suffer from further drawbacks.
- In this respect, several lateral guide elements are required to prevent off-centered operation arising, this giving rise to lateral slippage of the flexible belt and, in the limit, its escape from the drive and return rollers. In this latter case, movement is blocked. The use of lateral guides complicates the construction and makes it expensive.
- Furthermore, said lateral guides have to act with force-against the longitudinal edges of the flexible belt to retain it within the guide, and this results in rubbing friction which because of its abrasive effect is damaging for the entire flexible belt and increases the power required to drive said belt.
- The aforesaid arrangements of the known art also present some constructional complication in obtaining precise positioning of the many hundreds of holding pegs which have to be fixed rigidly in an integral manner to the flexible belt. Even if said holding pegs, which follow each other along the flexible belt, are fixed by special means to limit the true tolerance of their pitch, they can, because of the series addition of tolerances, find themselves in an unsuitable position for proper operation with the gripper elements of the automatic doffing device.
- In addition, the lengthy flexible belt used for conveying can after a prolonged period of operation suffer considerable wear and deformation which together with temperature variations can result in non-uniform pitch of the pegs. These latter no longer become correctly aligned with the winding tube feed and withdrawal means, and this results in blockage of the entire handling system which extends along the face of the ring spinning machine.
- From DE-A-37 12 027 there is known a device and a process for conveying both winding tubes empty of wound yarn and winding tubes filled with wound yarn in a textile machine, having the features of the preamble of
claims - The object of the present invention is to obviate the aforesaid drawbacks by providing an apparatus and a method for conveying winding tubes filled with wound yarn or empty of wound yarn and for aligning them in correspondance with the spinning spindles along the faces of a ring spinning machine, which have the following advantages:
- the winding tube assembly is conveyed without the need for considerable drive force;
- the winding tubes can be moved automatically along any horizontal distance without even the minimum hindrance arising, the motion transmission being of high efficiency with perfect guiding along the entire path of movement;
- the apparatus is of simple construction, with very small transverse dimensions along its entire longitudinal extension, this being combined with simple operation such that the replacement of the tubes filled with wound yarn by the tubes empty of wound yarn can be carried out rapidly:
- even after a prolonged period of operation under substantial temperature variations, the exact repositioning of all the pegs holding their winding tubes in a manner aligned and coaxial with the respective spinning spindles is ensured so that the gripper elements of the automatic doffing device can simultaneously and with perfect operational reliability deposit all the tubes filled with wound yarn onto said pegs and, under the same conditions of operational reliability, successively and simultaneously grip all the tubes empty of wound yarn and withdraw them from said pegs;
- installation along and about existing spinning machines is possible without considerable constructional modification being required to the spinning machine itself.
- These and further advantages are attained by an apparatus having the features claimed in
claim 1 and by a method as claimed inclaim 7. Preferred embodiments of the apparatus are claimed inclaims 2 to 6. - The invention is described in detail hereinafter with reference to the embodiments which are shown diagrammatically on the figures of the accompanying drawings and for which further details and characteristics are given hereinbelow.
- On the accompanying drawings:
- Figure 1 is a diagrammatic isometric perspective view of an apparatus of the present invention which with two drive belts revolves along the two spinning fronts of the ring spinning machine, of which those parts not required for an understanding of the invention have been omitted, the fixture also indicating the stage in which the assembly of tubes empty of wound yarn held on the relative pegs of the flat elements is stationary, said tubes having been positioned by the tensioning brake in positions perfectly coaxial with the axes of the spinning spindles on both faces, awaiting the commencement of automatic doffing, and further shows the clamping engagement between the tensioning brake and the last plate of the articulated chain, the flat elements of which are tensioned by the dragging movement of the two underlying endless mobile belts, one for each machine face;
- Figure 2 is an isometric perspective view of a flat element of the articulated chain of Figure 1 to a slightly enlarged scale, this being connected by articulated swivel joints in the form of connecting rods to the two flat elements adjacent to it, ie the one which follows it and the one which precedes it, and also indicates diagramatically the presence on its lateral surface of a means identifiable by a position transducer which is also shown facing said means in close proximity thereto;
- Figure 3 is a diagrammatic plan view of the tensioning brake supported by an underlying slide with its clamping lever mechanism in its open rest position immediately before being activated in order to engage the last flat element of the articulated chain;
- Figure 4 is a diagrammatic plan view of the tensioning brake at the precise moment in which its lever mechanism, after being activated, commences its braking contact with the lateral surfaces of the last flat element, to slow down the movement of the articulated chain;
- Figure 5 is a diagrammatic plan view of the tensioning brake with its lever mechanism clamped against the sides of the last flat element and its braking levers positioned against mechanical positioning elements which provide the clamping action and preserve the exact coaxiality between the pegs holding the winding tubes and the spindle axes along the two spinning faces;
- Figure 6 is a diagrammatic perspective isometric view of the apparatus of the present invention in which the articulated chain of flat elements is subjected to movement about the spinning machine by the underlying endless mobile belts in order to discharge the tubes filled with wound yarn which have been previously withdrawn from the spindles by the automatic doffing device and simultaneously mount the tubes empty of wound yarn onto the pegs in order to restore the operational situation shown in Figure 1, and also shows known blocking levers which engage between the flat elements to cause these to intermittently advance stepwise for the upward withdrawal of said tubes filled with wound yarn and the simultaneous mounting of said tubes empty of wound yarn downwards onto the pegs;
- Figure 7 is a perspective isometric view of the terminal part of the articulated chain to a slightly enlarged scale when in the curve transit position guided by lateral guides which extend along the entire endless track about the spinning machine, and also shows the connecting rod which forms the articulated swivel joint of adjustable length and the elements for connecting it to the flat elements;
- Figure 8 is a diagrammatic perspective isometric view of an apparatus of the present invention extending about the entire ring spinning machine on several underlying drive belts, and shows the stage in which all the tubes empty of wound yarn are stationary as illustrated Figure 1.
- In the figures like elements have the same reference numbers. Furthermore, for the purpose of clarity of the whole parts which are not necessary for the understanding of the invention like the driving assemblies for the varies drip belts and the various supporting structures as well as the winding tube supplying and doffing means have been omitted. In said accompanying figures:
1 is a flat element comprising on its upper part holding pegs, of which in the proposed preferred application one peg holds and supports the winding tube empty of wound yarn and the other peg holds and supports the winding tube filled with wound yarn. Saidflat element 1 rests by gravity on the upper surface of an underlying mobile drive belt. 2 is the tube empty of wound yarn mounted on one of the two pegs which are rigidly fixed to theflat element 1. 3 is the machinery housing of the ring spinning machine having two opposing spinning faces formed from some hundreds of adjacent spindles one adjacent the other. 4 is the last element of the articulated chain ready to engage with the lever mechanism of the tensioning brake. 5 and 6 are the mobile flat belts arranged along the respective spinning faces to support and drive the articulated chain of mutually connectedflat elements 1. Said endless mobile belts can be advantageously driven with continuous motion and thus free of electrical or electronic locks linked to the operating cycle sequences relative to the withdrawal, insertion and positioning devices for the winding tubes. 7 are the end structures, one opposite the other, of the ring spinning machine. 8 and 10 are arrows indicating the respective directions of motion of the upper branches of the two endlessmobile belts mobile belts drive rollers tubes 2. Said pegs 16 are fixed rigidly to theflat elements 1 by a lower shank pin 17 about which a connectingrod 25 is pivotally engaged to form the swivel joint for two consecutiveflat elements 1. 18 is a threaded element rigid with a respectiveflat element 1 and screwed into the respective connectingrod 25 to allow the precise and adjustable axial positioning of two consecutiveflat elements 1. 19 is a position transducer which cooperates withidentifiable means 21 applied to the lateral surfaces of theflat elements 1. 20 is the drive source for operating thedrive rollers slide 22 is normally stationary inposition 22 and moves intoposition 22a when it is required to move the lever mechanism of the tensioning brake together with the articulated chain through a distance equal to the distance between the axes of the twopegs 16 fixed on a singleflat element 1, ie the pitch of said consecutive pegs 16. 24 are blocking levers operated by known means for engaging between theflat elements 1 and causing them to advance intermittently. 25 is the connecting rod which connects two consecutive flat elements and which at one end is connected to the pin shank 17 to form the swivel joint and at the other end 13 connected to the threaded element 13 to allow adjustable axial positioning. 26 is the articulated chain formed from the plurality offlat elements 1 which surround the ring spinning machine. 27 (Fig.1) is the device which contains both the accumulation oftubes 2 empty of wound yarn and the known means for mounting saidtubes 2 in the direction of thearrow 46 onto thepegs 16 of theflat elements 1. 28 is the container bin for thetubes 50 filled with wound yarn which are conveyed into it by thechute 29 after being seized and withdrawn from thepegs 16 by any knownwithdrawal device 52, the linkages or operating means of which are located in theblock 30. 32 (Fig.3-5) is the actuator which moves thesupport slide 22 for the tensioning brake. 50 is a tube filled with wound yarn which is withdrawn from a spindle by the gripper element of the automatic doffing device and held on apeg 16 to be then moved by the articulatedchain 26 to its position for withdrawal and conveying in the direction of thearrows 48 to place it in thebin 28. 33 is a section bar or structure of suitable shape which acts as a lateral guide track, and along the portions free of the mobile belt acts as the track for supporting theflat elements 1 of the articulatedchain 26. Said guide andsupport section bar 33 passes around theend structures 7 of the spinning machine and about the whole spinning machine forming an endless slide track. 34 is the rod of theactuator 32. 35 and 36 are the levers of the tensioning brake lever mechanism which engage with the frusto-conical sides of the lastflat element 4. Said engagement is implemented by the action of theactuator 44, which by pressing thelevers pivots levers flat element 4 with the aid of theelastic elements 43. 37 and 38 are two mechanical positioning elements in the form of brackets fixed rigidly to thelevers levers flat element 4. 6a, 6b and 6c (Fig.8) are endless mobile flat belts which can replace thebelt 6 and which together cover one whole spinning face, their motion being perfectly identical. Their upper branches are driven in the direction indicated by thearrow 8. 5a, 5b and 5c are endless mobile flat belts which can replace thebelt 5 and which together cover the other spinning face, their motion being perfectly identical. Their upper branches are driven in the direction indicated by thearrow 10. 55 are optional mobile flat belts in a transverse position, they being driven substantially with the same motion as thelongitudinal belts - The operation of the apparatus for conveying and positioning winding tubes in correspondence with the spinning spindles and around the spinning machine, shown on the accompanying figures, is as follows.
- The winding
tubes 2 empty of wound yarn are already, as shown in Figure 1, arranged in a position in front of the spinning spindles awaiting operational correlation with the automatic doffing device which when a winding is complete replaces the tubes filled with wound yarn and mounted on the relative spindles, with saidtubes 2 empty of wound yarn and held stationary on the pegs of the articulatedchain 26. - This latter is taut and aligned along the two spinning faces by the clamping action of the
levers flat elements 1 by the endlessmobile belts tubes 2 empty of wound yarn are present on only two partial portions of the articulatedchain 26. Each portion extends frontally along the line of spinning spindles of a single face. Along the remaining length of the articulatedchain 26 there are no windingtubes 2. In the practical embodiment of the present invention the windingtubes 2 are held in a line on alternate pegs at a distance apart equal to the spindle pitch, the spindle pitch being the distance between the axes of two adjacent spindles. With this construction the holding pegs 16, fixed in pairs on theflat elements 1, follow each other at a distance apart equal to one half the pitch of the spinning spindles of the ring spinning machine. - In view of the aforegoing, when the automatic doffing device is activated the gripper elements firstly remove all the tubes filled with wound yarn simultaneously from both spinning faces by withdrawing them from their spindles and immediately mounting them on the
free pegs 16 which alternate with thetubes 2 empty of wound yarn. - Said
free pegs 16 are stationary in positions perfectly coaxial with the axes of the various spindles, this correct precise location being determined by the clamping action of thelevers endless belts arrows flat elements 1. When unloading of thetubes 50 filled with wound yarn is complete the gripper elements are released and rise from them, after placing them on the relative pegs 16, by the distance needed not to obstruct the subsequent movement of the articulatedchain 26. After disposing of the tubes filled with wound yarn, the same gripper elements are preferably made to grip tubes empty of wound yarn and mount them on the spindles. - The gripper elements can be of any construction suitable for the purpose. However it is preferable to use gripper elements of a type such as those described in EP-A-0 290 063.
- The
actuator 32 is then activated to move theslide 22 into theposition 22a (see Figure 5, dashed-line position). The entire lever mechanism of the tensioning brake, which continues to clamp theflat element 4, moves rigidly with saidslide 22 to produce the aforesaid movement of the articulatedchain 26. This latter advances through one half the spindle pitch by the dragging action of the endlessmobile belts - By this means all winding
tubes 2 are positioned aligned and in perfect coaxiality with the spindle axes along both spinning faces. - Consequently, said winding
tubes 2 lie in perfect verticality bellow the gripper elements. These latter, on activation of the automatic doffing device of known type, then grip the windingtubes 2 to convey them and fix them onto the respective spindles. Thus by means of the apparatus of the present invention correct and precise unloading of thetubes 50 filled with wound yarn and pick-up of thetubes 2 empty of wound yarn is obtained even when simultaneously using several hundreds of gripper elements which require exact gripping positions. - The
mobile belts flat elements 1 they produce a continuous positioning tension throughout the articulatedchain 26. - Said positioning tension, which arises by the simultaneous cooperation between the clamping action of the
levers arrows endless belts flat elements 1 along the two horizontal longitudinal sections of the spinning faces of the spinning machine, and also to ensure operational coaxiality between the holding pegs 16 and the axes of the many hundreds of spindles. - When doffing is complete and the winding
tubes 2 have been placed on the spinning machine spindles, this latter again operates to produce a new batch of wound yarn and theactuator 44 is activated to pull thelevers pivots levers flat element 4. The articulatedchain 26 immediately advances with its ordered load oftubes 50 filled with wound yarn in the direction of movement indicated by thearrows flat belts flat elements 1 to cause the articulatedchain 36 to move along the circuit unidirectionally and convey thefirst tube 50 filled with wound yarn along the side of theend structure 7 and under anautomatic withdrawal device 52 which removes it vertically by withdrawing it from itspeg 16 and conveys thetube 50 along the direction indicated by thearrows 48. Said windingtube 50 is stored in thecontainer 28 by way of thechute 29. - The expulsion of the individual winding
tubes 50 from therespective pegs 16 of the articulatedchain 26 can be continuous or intermittent in known manner. - Intermittent operation, which is preferred and is illustrated on the accompanying figures, requires the presence of blocking
levers 24 operated by known means, these latter being coordinated by knownposition transducers 19 to correctly engage saidlevers 24 between theflat elements 1 and compel the articulatedchain 26 to advance intermittently stepwise. While themanipulator 52 continues to withdraw thetubes 50 filled with wound yarn, at a certain moment the firstflat element 1 from which thefirst tube 50 was withdrawn arrives below a mechanism, not shown, which takes atube 2 empty of wound yarn from thecontainer 27 and mounts it on therespective peg 16 of said firstflat element 1 as indicated by thearrow 46. - The insertion mechanism and pickup device can be of any known type suitable for the purpose.
- After the aforesaid operation in which the
levers flat element 4 by the action of theactuator 44, theslide 22 is repositioned by theactuator 32 in itsnormal rest position 22 to again await the operational situation shown in Figure 3, saidlevers - The withdrawal and insertion cycles for the
tubes 50 filled with wound yarn and thetubes 2 empty of wound yarn proceed by assuming the intermediate configuration shown in Figure 6 and then returning to the initial configuration shown in Figure 1. - Immediately before its return to this latter initial configuration the
flat element 4, as it terminates its complete revolution about the spinning machine, is pincered by thelevers flat element 4 and gradually self-lock around it (see Figures 4 and 5) to halt and correctly position the entire articulatedchain 26 along the two spinning faces of the ring spinning machine. This is attained for arranging thepegs 16 with therespective tubes 2 in operational correlation with the known automatic doffing device which when yarn winding onto the winding tubes is complete replaces on the spindles the tubes filled with wound yarn by tubes empty of wound yarn. While awaiting yarn winding completion on the winding tubes theendless belts mobile belts inverter block 15 causes the two drive pulleys 12 and 14 to rotate substantially synchronized but in reverse directions. These latter drive the twoendless belts arrows - The operational stages involving movement of the various parts of the apparatus according to the invention and the activation of the actuators or drive sources for the various aforesaid devices together with the operational correlation with the automatic doffing device are controlled overall by
position transducers 19 associated withidentifiable means 21, both of known type, these latter being positioned advantageously on the lateral surfaces of the flat elements 1 (see Figure 2). - Furthermore, during its installation the articulated
chain 26 is adjusted in length by making micrometric adjustments on the screw connections between the elements 18 and the connectingrods 25 of consecutiveflat elements 1, this precision then not changing with time because their movement within the apparatus of the present invention does not involve any forced dragging, the sliding of the chain also being smooth about curves because of the facility for considerable swivelling between said flat elements 1 (see Figure 7). - The
belts chain 26 are only one example of the many possible dragging means, such as moving by several short-length belts disposed along the individual spinning faces. They are driven in the same direction and in substantial synchronism along their individual spinning face. - Figure 8, shows one possible arrangement in which the
belts 5a, 5b and 5c are driven in the direction indicated by thearrow 10 whereas thebelts arrow 8. Figure 8 also shows the presence oftransverse belts 55 which can be installed to improve the movement of the articulatedchain 26. The aforesaid embodiment involving two or more dragging belts enables two spindle faces, one opposite the other, to be served with a single articulated chain, and a construction of this type cooperating with an automatic doffing device acting simultaneously on both faces is therefore economically interesting. - According to a modification, not shown, an installation can be desirable consisting of a double apparatus of the type according to the invention, one for each spinning face, to cooperate with an automatic doffing device which operates on only one face of the spinning machine independently of the other face, to allow spinning of different batches of yarn.
- Each apparatus in this case extends horizontally about the spindle line of one spinning face in an arrangement comprising a return track for the articulated chain entering and underlying the
machinery housing 3 of the spinning machine. Both apparatuses then assume an arrangement symmetrical to each other about the longitudinal axis of the spinning machine. - The
pegs 16 could be fixed one following the other on theflat elements 1 at a distance apart equal to the spindle pitch of the ring spinning machine. - In this modification, the gripper elements of the automatic doffing device would firstly remove the tubes filled with wound yarn from the spindle and place them temporarily on stationary pegs fixed to a rod or similar element fixed rigidly to the spinning machine frame, to then grip the tubes empty of wound yarn and fix them onto the spindles, and then again grip the tubes filled with wound yarn and transfer them from the pegs on which they are held to the
pegs 16 of theflat elements 1 of the apparatus according to the invention. Such an automatic doffing cycle and device are known in the art and thus no further description is necessary. It is apparent that in this latter modification theslide 22 of the tensioning brake would no longer be moved through the aforesaid half spinning spindle pitch. - The purpose of these various modifications is specifically to allow the apparatus of the present invention to be incorporated in the different automatic doffing cycles and devices provided in the overall automation of ring spinning machines far the production of different textile articles.
- The apparatus must also be made compatible with the movement of other elements such as travelling cleaner devices, yarn rejoining trolleys etc.
- Preferred embodiments with some modifications have been described, but other embodiments are possible.
- For example, the number of
pegs 16 fixed on eachflat element 1 can vary; the shapes and dimensions of said holding pegs 16 can vary; a single transfer belt could be provided extending along the entire spinning face opposite that spinning face comprising the tensioning brake; a plurality of transfer belts could be provided driven with identical or slightly different speeds; dragging elements other than belt elements could be provided; it would also be possible to provide a different lever mechanism for the tensioning brake; and drive sources could be added or removed to advantageously coordinate the movement of the dragging belts with all the various operating stages of the devices provided in the apparatus of the present invention.
Claims (7)
- An apparatus for conveying both winding tubes (2) empty of wound yarn and winding tubes (2) filled with wound yarn on holding pegs (16) rigidly fixed to the upper part of a plurality of flat elements (1) and for aligning the tubes (2) in correspondance with the spinning spindles of a ring spinning machine, said apparatus being arranged to serve and to cooperate with an automatic doffing device in the ring spinning machine, characterised by comprising:- articulated swivel joints of adjustable length for connecting together each of the flat elements (1);- endless mobile elements (5, 6; 5a, 5b, 5c, 6a, 6b, 6c) which support said flat elements (1) and drive them by friction dragging;- a tensioning brake (35-44) which halts the flat elements (1) by clamping the tail end (last element 4) of the articulated chain (26) formed by said flat elements (1) connected together, to align the holding pegs (16) and position them in coaxial coincidence with the axes of the spinning spindles.
- An apparatus as claimed in claim 1, characterised in that the articulated swivel joints of adjustable length each consist of a connecting rod (25) which connects together two consecutive flat elements (1) and which at one end is pivotally connected to a pin (17) rigid with one of the two flat elements (1) to form the articulated swivel joint, and at its other end is connected to a threaded element (18) rigid with the other flat element (1) to allow precise and adjustable axial positioning of said flat elements (1).
- An apparatus as claimed in claim 1, characterised in that the flat elements (1) have their lateral surfaces provided with means (21) identifiable by position transducers (19).
- An apparatus as claimed in claim 1, characterised in that the tensioning brake is gradually engageable with a last plate element (4) of the articulated chain (26), the flat elements (1) of which are subjected to a continuous friction dragging movement of the underlying endless mobile element (5, 6; 5a, 5b, 5c, 6a 6b, 6c).
- An apparatus as claimed in claims 1 and 4, characterised in that the tensioning brake comprises a lever mechanism having:- adjustable friction braking levers (35, 36) to slow down the motion of the articulated chain (26); and- mechanical positioning elements (37, 38) which ensure locking of said levers (35, 36) and said last plate element (4) and preservation of exact alignment between the holding pegs (16) for the winding tubes (2) and the spinning spindles.
- An apparatus as claimed in claim 1, characterised in that each of the flat elements (1) comprises two pegs (16) spaced apart by half the distance between the spinning spindles, and in that the tensioning brake is arranged on a support slide (22) movable in the direction of the articulated chain (26) and fixable in two positions spaced apart by a distance corresponding to the distance between the axes of two adjacent pegs (16).
- A method for conveying both winding tubes (2) empty of wound yarn and winding tubes (2) filled with wound yarn and for aligning the tubes (2) in correspondence with the spinning spindles of a ring spinning machine by means of an apparatus as claimed in one of the preceding claims, wherein the tubes (2) are carried by holding pegs (16) rigidly fixed to the upper part of a plurality of flat elements, characterised by the following steps:- frictionally dragging said flat elements (1) by the surface of endless mobile elements (5, 6; 5a, 5b, 5c, 6a, 6b, 6c) on which the flat elements (1) adhere by gravity, and- aligning the axes of the winding tube holding pegs (16) and positioning them in perfect frontal coaxiality with the axes of the spinning spindles by braking the motion of the flat elements (1) on said endless mobile elements (5, 6; 5a, 5b, 5c, 6a, 6b, 6c) by clamping the tail end of the articulated chain (26) formed by said flat elements (1) connected together.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT2173288 | 1988-08-23 | ||
IT8821732A IT1226851B (en) | 1988-08-23 | 1988-08-23 | EQUIPMENT AND METHOD FOR CONVEYING AND FOR ALIGNING TO THE FUSIDI RING SPINNING TUBES WINDERS |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0355887A1 EP0355887A1 (en) | 1990-02-28 |
EP0355887B1 true EP0355887B1 (en) | 1993-06-09 |
Family
ID=11186086
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP89201987A Expired - Lifetime EP0355887B1 (en) | 1988-08-23 | 1989-07-27 | Apparatus and method for conveying winding tubes to ring spinning spindles and aligning them therewith |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0355887B1 (en) |
DE (1) | DE68906985D1 (en) |
ES (1) | ES2041974T3 (en) |
IT (1) | IT1226851B (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH678720A5 (en) * | 1988-09-24 | 1991-10-31 | Rieter Ag Maschf | |
DE3918877C2 (en) * | 1989-06-09 | 1998-09-17 | Zinser Textilmaschinen Gmbh | Transport device for providing bobbin tubes at the spinning positions and for removing spinning bobbins from the spinning positions of a double-sided spinning machine |
DE58909221D1 (en) * | 1989-09-21 | 1995-06-08 | Rieter Ag Maschf | Conveyor device on a spinning machine. |
DE4319173A1 (en) * | 1993-06-09 | 1994-12-15 | Schlafhorst & Co W | Ring-spinning machine in which are arranged conveyor belts drivable along spindle rows present on both sides of the machine for the supply of empty tubes and the removal of cops |
DE102004019461A1 (en) * | 2004-04-16 | 2005-11-03 | Spindelfabrik Süssen Schurr Stahlecker & Grill GmbH | Spinning machine, with a number of spinning stations, has a transport system of peg trays to carry full bobbins and empty bobbin sleeves with auxiliary spindles on carriers to hold bobbins/sleeves temporarily and loosely between peg trays |
CN110217649B (en) * | 2019-07-04 | 2020-12-29 | 海宁市冯氏科技股份有限公司 | Bobbin taking mechanism in bobbin replacing device |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3712027A1 (en) * | 1986-04-11 | 1987-10-22 | Toyoda Automatic Loom Works | Process and apparatus for the transportation of full bobbins and empty bobbin cores in a textile machine |
JPS6382285A (en) * | 1986-09-20 | 1988-04-13 | Murata Mach Ltd | Transfer device for tray |
-
1988
- 1988-08-23 IT IT8821732A patent/IT1226851B/en active
-
1989
- 1989-07-27 EP EP89201987A patent/EP0355887B1/en not_active Expired - Lifetime
- 1989-07-27 ES ES198989201987T patent/ES2041974T3/en not_active Expired - Lifetime
- 1989-07-27 DE DE8989201987T patent/DE68906985D1/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE68906985D1 (en) | 1993-07-15 |
IT1226851B (en) | 1991-02-19 |
IT8821732A0 (en) | 1988-08-23 |
EP0355887A1 (en) | 1990-02-28 |
ES2041974T3 (en) | 1993-12-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US3924762A (en) | Apparatus for conveying and storing yarn packages or pirns | |
EP0144652B1 (en) | Incremental modular creel system | |
WO1997008085A1 (en) | Stack turner and replenisher and method | |
ITBO20060194A1 (en) | APPARATUS FOR FORMING A CONTINUOUS AND FALLED FLOW OF PAPER ROLLS GROUPS AND OTHER PRODUCTS APPROPRIATELY ORIENTED, INITALLY SINGLE OR PRE-PACKAGED, TOWARDS A CONTINUOUS AND HIGH-PRODUCTION OPERATING MACHINE, SUCH AS A BAGER | |
CN111531787A (en) | Full-automatic hook assembling system | |
EP0355887B1 (en) | Apparatus and method for conveying winding tubes to ring spinning spindles and aligning them therewith | |
US5391047A (en) | Apparatus for loading and unloading workpieces | |
US4059185A (en) | Apparatus for supplying spinning preparatory machines with cans or the like | |
CN116214160A (en) | Full-automatic assembly system and assembly method | |
CN110205719B (en) | Yarn drum replacing device for doffer | |
US5495991A (en) | Apparatus for transporting empty yarn winding tubes and fully wound textile yarn packages to and from a winding location | |
US11299353B2 (en) | Conveyors interfacing system and method | |
KR20110101925A (en) | Loading and unloading apparatus for semiconductor package lead frame magazine | |
US4336875A (en) | Apparatus for the transfer of hanks | |
CS262416B2 (en) | Stepping conveyer for cores on textile machines | |
KR890006501A (en) | Roving frame device to automatically remove bobbins, change them with empty tubes, and wind the roving | |
KR100278039B1 (en) | Stick feeder | |
US5475899A (en) | Sliver container structure and method of exchanging sliver containers | |
JP2503413B2 (en) | Full and empty bobbin transfer equipment in spinning machines | |
JPH09111551A (en) | Device for taking out bobbin on which yarn is wound after texturing processing of yarn by fiber machine, especially texturing machine | |
CN216512818U (en) | Bucket dividing and feeding mechanism of filling machine | |
US5228551A (en) | Method and apparatus for transferring coiler cans to and from a can transporting carriage | |
CN220334409U (en) | Bobbin yarn transmission device of bobbin winder | |
CN110217649B (en) | Bobbin taking mechanism in bobbin replacing device | |
CN115589119B (en) | Feeding and discharging device and corresponding winding machine |
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: 19900725 |
|
17Q | First examination report despatched |
Effective date: 19920306 |
|
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 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 19930609 Ref country code: FR Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY Effective date: 19930609 Ref country code: DE Effective date: 19930609 |
|
ET | Fr: translation filed | ||
REF | Corresponds to: |
Ref document number: 68906985 Country of ref document: DE Date of ref document: 19930715 |
|
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 THE APPLICANT RENOUNCES Effective date: 19930728 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LI Effective date: 19930731 Ref country code: CH Effective date: 19930731 Ref country code: BE Effective date: 19930731 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Effective date: 19930909 |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FG2A Ref document number: 2041974 Country of ref document: ES Kind code of ref document: T3 |
|
BERE | Be: lapsed |
Owner name: SAVIO S.P.A. Effective date: 19930731 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
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 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 19930909 |
|
26N | No opposition filed | ||
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FD2A Effective date: 19991007 |