CN1027766C - Method and an apparatus for thread joining in an open end spinning apparatus - Google Patents

Abstract

The method of the invention is that: the vacuum larger than the spinning vacuum is to produce effects outside the peripheral fiber feeding track of the opening cylinder. Due to the method, the fiber bundle is led upwards and sucked through a yarn inlet-hole 130. When the actual jointing operation is begun, the vacuum is provided again, so the fiber bundle is arranged on the fiber agglomerate surface 33. In order to control the fiber bundle, a vacuum source 5 is connected to a suction mouth 52 by a converting device 64 and a vacuum pipe 51.

Description

Method and an apparatus for thread joining in an open end spinning apparatus

The present invention relates to a kind of method that is used at the open-end spinning device Yarn connecting, said open-end spinning device has a feeding unit that is used to provide ribbon and is installed in an interior shredding cylinder of a shell, separated fiber feeds passage, by means of being used for the suction stream of yarn moulding is fed on the fibre deposition face by a fiber from the shredding cylinder, wherein, in joint operating period loose thread is turned back on the fibre deposition face, from fibre deposition face, extracting out again with the yarn that will be returned in advance during fiber combines continuously then.When preparing the joint operation, connect feeding unit, and fibre stream relative fibre deposition face on its passage is turned to, and be provided on the suction apparatus, the invention still further relates to the device that is used for realizing the method.

If Yarn break or because of after other reason stops spinning process then stopping feeding unit immediately to prevent the fiber of the damage spinning apparatus that unnecessary supply will be blocked.Yet, usually continuously running of shredding cylinder when stopping, this not only makes complex process, especially to each yarn position, and restarts and gradually stops also elapsed time.As a result, the fiber pile that infiltrates the shredding cylinder from static feeding unit is fully taken away.Before resume operations, at first these residual fiber to be removed from fibre deposition face, this is because these short also impaired fibers can not make spinning process carry out (GBPS1321809 and indian patent 134645) well continuously usually.

From Yarn connecting and manual practice of removing Yarn break, obtain, the spinning operating personnel at first the short time start feeding unit, clear up spinning apparatus then, just can make Yarn connecting.The broken parts that will have the staple fibre pile by so-called pre-feeding is removed.The feeding unit that stops by subsequently between clear-up period damages a certain amount of fiber once more, and is joint preferably, and many fibers are still in pile.Owing to stop the time that feeding unit depends on that cleaning operation is required, always produce the connector status of approximately identical fiber pile so that even under the high-speed spinning speed and under situation with the material difference, when Yarn connecting, improved success rate widely.

In light of this situation, stop feeding unit at every turn and make pile that a certain amount of damage be arranged, this depends on the time length that stops, thus, propose, between the feeding unit continuous operating period, fibre bundle relative fibre deposition face in its passage is turned to, and, for this purpose, in the feeding passage, provide suction inlet (GB-PS1 by in suction apparatus of fibre deposition face importing, 170,869) or compressed air mouth (GB-PS2,069,014).Because continuous fiber and the shredding operation of providing, not impaired fiber is just in time supplied on the fibre deposition face in the required moment, but upset spinning process by such opening in the highstrung fiber transmission channel between shredding cylinder and fibre deposition face.Therefore, neither one has practical significance in these schemes.

An object of the present invention is to propose in open-end spinning device, to be used for the method and apparatus of yarn joint, can obtain ideal, reliable joint, do not damage spinning process thereafter.

The invention provides a kind of method that is used for carrying out Yarn connecting at open-end spinning device, this device has a fibre rod feeding device and a shredding cylinder, this shredding cylinder is installed in the shell, in normal spinning process, fiber by the air-flow band that the spinning negative pressure produces from this shredding cylinder, supply with the fibre deposition face that in shell, is rotating by fiber feeding passage, in this method, in the Yarn connecting operating process, the end of a thread turns back in the shell of fibre deposition face, from this line that had before returned is extracted out once more then, and fiber is spliced continuously, wherein, remove the unwanted fiber of Yarn connecting for before being returned at the end of a thread, feeding unit is started, fibre stream departs from out the feeding feeder connection and is fed to the absorption device, this absorption device is arranged in the downstream of shredding drum shell fiber feeding feeder connection, make fiber do not enter feeding passage and fibre stream only when actual joint program begins deviation go in the fiber feeding passage, the invention is characterized in, for the end of a thread is imported in the spinning apparatus, open the spinning negative pressure, the end of a thread is only returned in the spinning apparatus to such degree, be that it does not contact fibre deposition face, turn off the spinning negative pressure then, unlatching is arranged in the absorption device of shredding drum shell, make when opening feeding unit, fibre stream departs from out the feeding feeder connection and is siphoned away by the absorption device under the effect of absorbing device, so that prevent them from arriving fibre deposition, begin until actual Yarn connecting program, the absorption device is turned off, and the spinning negative pressure is opened again, makes fibre stream be supplied on the fibre deposition face again, and cooperate with it in time, the end of a thread is returned fibre deposition face.

The present invention also is provided at the device that carries out Yarn connecting in the open-end spinning device, this device comprises a fibre rod feeding device, a shredding drum shell that has the shredding cylinder, a fibre deposition face that in shell, rotates, article one, the fiber from shredding drum shell guide fiber cohesion face feeds passage, a negative pressure source and a suction inlet that is positioned on the shredding drum shell perisporium that is used for producing negative pressure is characterized in that the present invention also comprises:

The first aspiration line device is applicable to selectively by described negative pressure source, provides negative pressure with the form of spinning negative pressure to fibre deposition face;

The second aspiration line device, this device is communicated with the suction inlet of described absorption device, be applicable to selectively by described negative pressure source, provide negative pressure with the form that departs from negative pressure to the circumference of fibre-opening unit having, this departs from negative pressure will be offseted the inlet of fiber feeding passage by the fiber of shredding, so that siphoned away by absorbing device by the fiber of shredding, prevent from thus to be fed to fibre deposition face by the fiber of shredding; And

The suction control device links with the negative pressure source and first and second aspirator, is used for controllably changing the spinning negative pressure and departs from the size of negative pressure, so that obtain unnoticed Yarn connecting by described spinning apparatus.

In said apparatus, preferably be provided with a control device that is used for controlling suction control device and Yarn connecting device, this Yarn connecting device has a yarn return mechanism and is used for that the end of a thread is turned back to one and shifts out ready position in the pipe at yarn, and a releasing device is used for discharging the end of a thread and makes it turn back to fibre deposition face.

In said apparatus, the suction control device is the part of conversion equipment, selectively negative pressure source is connected on the fibre deposition face as the spinning negative pressure, or receives on the suction inlet fiber is absorbed.

Preferably aspirating control device has two control channels, and one of them can and lead to the first aspiration line device aligning of fibre deposition face, and wherein another second aspiration line device that can and lead to suction inlet is aimed at.

Preferably aspirate the fixed edge of control device and movable can constitute the switching limit to the active edges that fixed edge is aimed at.

Preferably aspirate control device and drive motion in one direction, and be provided with the action that a flexible member is finished to return by transmission mechanism.

Preferably aspirating control device can be controlled by maintenance car, and this car can move along a plurality of spinning apparatus.

Reach this purpose according to the present invention, wherein, when preparing the joint operation, at the outside suction function that forms of the fiber transmission channel of shredding cylinder periphery, its suction function is greater than the suction function at the feeding feeder connection, so that the fiber entry that departs from out on the feeding passage is sent to an opening with fibre stream, and when the actual joint of beginning is operated, makes this negative pressure invalid so that fibre stream is supplied on the fibre deposition face.To be used for all controls of fibre stream and transfer and be installed in fiber transmission channel outside between shredding cylinder and the fibre deposition face, therefore, by fibre deposition face fibre stream is effectively changed in the suction apparatus, be used for joint, and spinning process thereafter is safe from harm.

Preferably reduce effect in the spinning negative pressure of the inlet of feeding passage in order to the joint operation, so that fibre stream can be directed departing from out this inlet, simultaneously, when actual joint operation begins, make negative pressure inefficacy, and make the spinning negative pressure on the feeding passage act on fully once more at the fiber transmission channel of shredding cylinder periphery.Ruo negative pressure enough is used for being controlled at the fibre stream of the periphery of shredding cylinder relatively.In order to reduce the spinning suction function on inlet, preferably disconnect this spinning negative pressure.

The method according to this invention in different embodiment, covers the feeding feeder connection at least in part, to reduce the spinning suction function.The fiber of introducing in the no cover part of feeding feeder connection enters the feeding passage and so further enters into fibre deposition face, the a part of fiber that acts on the zone that is capped of fiber feeding passage is diverted, and enter the feeding passage too, and be directed into another part fiber on this zone that is capped of feeding feeder connection because inertia, do not carry out the change of this direction, and siphon away by additional negative pressure in the periphery of the shredding cylinder of feeding after the feeder connection.

In order to obtain unnoticed joint, situation is preferably, if when actual joint operation begins, in fact surpass one-period, reducing increases the spinning suction function once more in the vacuum action of the fiber transmission channel outside of shredding cylinder periphery or at the feeding feeder connection, so that fibre stream little by little is increased to its maximum intensity in the feeding passage.The increase of fibre stream is preferably taken out the increase of speed along with yarn and is increased to avoid that yam count is changed.The sub-fraction fiber can only be provided on the fibre deposition face at first in joint operating period, residual fiber is crossed and is led out on the feeding feeder connection simultaneously, and do not enter in it, then loose thread is turned back on the fibre deposition face, and after loose thread is combined in fiber on the fibre deposition face of being arranged in, increase a part of fiber that is provided on the fibre deposition face.Therefore, then simple convenient, yarn is returned with yarn take out synchronously, also finished the feeding of fiber on the other hand.

Be formed for the accumulation of the required fiber of joint operation with lower fiber delivery rate so that from subsequently Yarn connecting in the cycle that is combined in the fiber that has been provided, a large amount of fibers can not rest on the fiber that has been provided.Therefore, after joint, form unconspicuous thread segment, and consider there is not thin zone.

In order to obtain high-intensity unnoticed joint, ideal situation is, when preparing the joint operation, at first at feeding feeder connection place, departing from out this enters the mouth and guides fibre stream, then, moment is provided to fibre stream on the fibre deposition face, again at feeding feeder connection place, departing from out this enters the mouth and guides fibre stream, and, in case loose thread arrives on the fibre deposition face and when beginning to take out yarn, fiber is provided on the fibre deposition face again.

For controlling fiber stream, according to the present invention, when preparing the joint operation, also can produce a negative-pressure air-flow in the periphery of shredding cylinder, so it is reverse in the feeding passage part air-flow to take place at least, simultaneously, the spinning negative pressure remains unchanged, and produces the air flow that the feeding passage enters suction apparatus take away the fiber of being carried by the shredding cylinder at least in part on its passage.For fear of the too high negative pressure value that needs in the suction apparatus, according to this method, another embodiment cuts off the different air-flows that enter the shredding drum shell so that the air-flow in the feeding passage is reverse.For fibre bundle is little by little turned to, connect its air-flow again so that can control the fibre weight that supplies on the fibre deposition face with controllable mode on fibre deposition face.

Because in case finish joint operation, then no longer need be on the suction apparatus that provides in the negative pressure of the fiber transmission channel outside of shredding cylinder periphery, so, when finishing the joint operation, preferably cut off this negative pressure.

In order to prevent that fiber unconsciously arrives on the fibre deposition face when the Yarn break removed, according to the present invention, another embodiment has been proposed, when Yarn break takes place, stop feeding unit and the cleaning cohesion face after, connect feeding unit again, at feeding feeder connection place, depart from out this and enter the mouth and guide fibre stream.Stop fiber being supplied to the shredding cylinder, thereby make the still pile in the shredding cylinder of running is milled its working region that reaches the ribbon that is clipped in the feeding unit.Siphon away by this air suction apparatus to the fiber on the fibre deposition face by remaining effective spinning negative pressure feeding.After clean-up phase, connect feeding unit again, and at feeding feeder connection place, depart from out this and enter the mouth and guide fibre stream,, but take away by the shredding cylinder so that the fiber that is damaged by the effect of milling do not arrive on the fibre deposition face.

In order during open-end-spinning, to obtain high-quality reliable joint in simple mode, propose preferably according to the present invention, when joint is operated, the spinning negative pressure is worked, loose thread is supplied in the spinning apparatus and does not contact fibre deposition face, and then disconnect the spinning negative pressure, make the negative pressure effect of the fiber transmission channel outside on the shredding cylinder periphery, so that when connecting feeding unit again, feed the feeder connection place, departing from out this enters the mouth and guides fibre stream and siphon away fiber, and when operating, the actual joint of beginning disconnects this negative pressure, connect the spinning negative pressure so that fiber is fed on the fibre deposition face, and yarn and thread head is turned back on the fibre deposition face.

If the fibre transportation cylinder is installed in the downstream of shredding cylinder, when preparing the joint operation, the periphery that another imagination is not the shredding cylinder but the outside of fiber transmission channel on the fibre transportation cylinder periphery provides a negative pressure.

According to the present invention for finishing the method, device with negative pressure source and suction inlet is provided, negative pressure source produces one and inhales stream, this inhales stream is transported on the fibre deposition face fiber channel, suction inlet is arranged on the outer wall of shredding drum shell of fiber transmission channel outside, wherein by conversion equipment and negative-pressure pipeline negative pressure source is connected on the suction inlet.This enters in the spinning organ with regard to having guaranteed the fiber that is not damaged by the effect of milling, and the fiber that therefore forms joint is used to increase strength of joint fully.

According to the present invention one preferably embodiment be to be connected to negative pressure source as the fibre deposition face of spinning negative pressure selectively or to be connected to and to be used for siphoning away on the suction inlet of fiber by conversion equipment.Therefore, be used for from the drum shell conveying fiber and make fiber can not enter spinning organ or be used for the negative pressure transformation energy that fiber supplies to spinning organ is suitable for the needs of correct joint operation.

On the centre position of conversion equipment, fibre deposition face and suction inlet can be loaded onto a negative pressure simultaneously.Supply that in this way can controlling fiber, and, make the conversion of negative pressure state can be suitable for the joint operation just according to the form (regular or irregular acceleration or retarded motion etc.) of processed fibrous material and selected spinning conditions and converting motion.

Sucking operating period, yarn and residual fiber needn't rest in the conversion equipment.For this reason, fibre stream can not be changed in conversion equipment.For this reason, conversion equipment has two control channels according to another embodiment of the present invention, makes a passage and first negative-pressure pipeline that leads to fibre deposition face in line, another with second negative-pressure pipeline that leads to suction inlet in line.

Be to guarantee the reliability of conversion operations, prevent that yarn and residual fiber from filling in pneumatic control device.For this reason, will be designed to shearing device with the stagnating margin and the movement edge of its switching device in line according to the present invention.

For simplifying the conversion of fibre stream, another embodiment of the present invention has been proposed, with the airtight effect of shredding drum shell with opposing air feed stream.Therefore, in the shredding drum shell, do not form the unsteered air-flow that influences spinning process.Therefore, if on the suction inlet that will be enough strong suction function provides in the wall outside the shredding drum shell, then in feeding yarn channel, do not cause back draught during the variation in the spinning negative pressure.So,, depart from out this and enter the mouth and guide fibre stream, and fiber is supplied to suction inlet at feeding feeder connection place.

For fear of the dominant negative pressure value controlling fiber stream at the suction inlet place, the shredding drum shell preferably has a controlled air supply opening, in the outer wall with the shredding drum shell of its design between feeding unit and feeding feeder connection.

If provide a trash eliminator, then preferably the impurity separating opening is designed to a controlled air supply opening at the shredding drum shell.

In the open-end spinning device in modern times, usually, carry out the joint operation by means of the maintenance car that moves along several spinning apparatus.In this case, can control air feed stream well with maintenance car.

In a better embodiment of the present invention, will be designed to the closing device of flap in order to control air feed stream.Make this closing device that is flap reach different positions at an easy rate by rotating it.For in the transition period also controlling fiber stream quantitatively, also can provide this air supply opening for the closing device that moves regularly by a control device.

Yet, needn't lean on air conversion fiber stream by control air-flow in shell.In addition, also controlling fiber stream mechanically.Therefore, in another embodiment of the present invention, in the shredding drum shell, cover a controlled dividing plate of feeding feeder connection.This just makes fibre stream correctly reverse.And also can fiber little by little be changed from suction inlet to the fibre transportation mouth and to spinning organ with plain mode.

For fear of front accumulation fiber, preferably closing device is installed in basically in the prolongation on the outer wall of shredding drum shell at the fibre transportation mouth of sealing.

Just entering the dividing plate of closing position in order to prevent that fiber from adhering to, shown in the fibre transportation direction, superimposed by the periphery and the dividing plate of shredding drum shell in its back-end in the mode of roof sheet tile, two front ends are superimposed with the outer wall of the mode of roof sheet tile and shredding drum shell, therefore, do not form bead.

Have been found that especially concerning fibre stream conversion gradually, if closing device and shredding cylinder axis move abreast then be favourable.For fibre stream is little by little changed, closing device has a profile, and the range coverage that its control reaches the fibre transportation mouth fully reaches the degree of institute's energy opening between the termination in gap of fibre transportation mouth fully.Preferably it is designed to bead.

This can make initial heavy in section fibre transportation mouth unimpeded, and then reduces its cross section momently by bead, to the last covers the cross section of fibre transportation mouth more fully.In addition, be little by little conversion, the control device that makes moveable partition board irregularly is to spacer function.Therefore, can stop, closing device is entered the open position from closing device with speed change in the centre position.

Can normally control the joint operation from the maintenance car that moves along several spinning apparatus.In this case, by maintenance car control conversion equipment.

Being used for controlling means for applying negative has various designs, for example, can be designed to a blade by maintenance unit control to it, yet, preferably form by an a valve especially check valve.

Can control the conversion of negative pressure state in theory in various common modes, for example, by means of the hydromechanical or pneumatic device of electromechanics.According to a special simple embodiment of the present invention, mechanically change, for returning when spring element is provided, drive conversion equipment a direction of motion by the control transmission device.

If the maintenance car of some yarning parts of dispensing selectively is provided, second negative pressure source is provided on maintenance car according to the present invention, suction inlet is connected on second negative pressure source rather than first negative pressure source.

In order to be used in the additional drive system surplus of conversion equipment, preferably by the connection motion control transfer of an intake line, intake line leads to conversion equipment from second negative pressure source.

If shredding cylinder back then is the fibre transportation cylinder; So, according to the present invention, be arranged on suction inlet on the outer wall of fibre transportation cylinder rather than be arranged on the wall of shredding cylinder.

The supply that the present invention enters the fiber in the spinning room by means of simple mechanism control, so, have only desirable fiber to enter and be used for the spinning room that joint is operated, because the control of the fibre stream that is useful on and conversion equipment all are installed in the outside of the main fiber transmission channel between shredding cylinder and the fibre deposition face, therefore, obtain the joint operation and enter effective conversion of the fibre stream of suction apparatus, and do not have infringement spinning process subsequently by fibre deposition face.The present invention even allow the quality of controlling fiber stream, so that not only form joint but also its outward appearance also is significantly improved, and do not need to be used for controlling the attachment device that drives yarn feeding device, guarantee the joint best success rate of operating period by this way.

Shuo Ming embodiment is for a more detailed description to details of the present invention with reference to the accompanying drawings.

Fig. 1 is the cutaway view of the open-end spinning device of design according to the present invention.

Fig. 2 designs, is installed in the plan view of the conversion equipment of feeding passage outside according to the present invention.

Fig. 3 is the cutaway view that adopts the conversion equipment of distinct methods design according to the present invention.

Fig. 4 is the cutaway view of the another kind of open-end spinning device of design according to the present invention.

Fig. 5 is the cutaway view of the open-end spinning device of the different embodiment of design according to the present invention.

Fig. 6 is the plan view of the shredding drum shell that has a conversion equipment of design according to the present invention.

Fig. 7 is the plan view of shredding drum shell that has the conversion equipment of a modification.

Fig. 8-the 12nd, the open-end spinning device of the different embodiment of design is at the lateral plan of each operational phase according to the present invention.

Figure 13 is the lateral plan of open-end spinning device that has the conversion equipment of modification.

At first be explained as follows with reference to 1 couple of the present invention of figure, Fig. 1 represents the yarning part of open-end-spinning machine, and, the present invention also can be used to improve other open-end-spinning machine, for example friction spun yarn machine.

Each yarning part in the shown open-end-spinning machine has a fibre-opening unit having 1 that has the shredding cylinder 11 that is installed in 10 li of shredding drum shells, for a fiber skein 40 is provided, fibre-opening unit having 1 has a feeding unit 2, in an illustrated embodiment, feeding unit 2 comprises and drives feed roller 20 and carry out the guide plate 21 of resilient engagement with feed roller 20.In an illustrated embodiment, on the outer wall 101 of shredding drum shell 10, also providing an impurity separating opening 12.An inlet 130 that leads to the feeding passage 13 of open-end spinning device 3 also is provided on the outer wall 101 of shredding drum shell 10.

Open-end spinning device have one be designed to shell 31 round the spinning organ of rotor 30.Coaxial with rotor 30, a yarn take-off pipe 32 leads to into shell 31, and gets pipe 32 by means of yarn yarn 4 can be taken out from rotor 30.For this reason, provide a pair of roller 41,42 of sending.Yarn 4 is wound on the bobbin that is driven by bobbin cylinder 43.For preformed joint is returned, send in the zone of the yarn operation between roller 41,42 and the bobbin cylinder 43, load magnet 45 is provided.In order to produce necessary spinning negative pressure, the negative pressure pipe 50 that will link to each other with negative pressure source 5 is received on the shell 31.Because air sucks shells 31 through yarn take-off pipe 32, the spinning suction function in the shell 31 only acts on feeding passage 13 to a small extent and enters the mouth on 130.Except first negative-pressure pipeline 50, also provide second negative-pressure pipeline 51 that links to each other with open end spinning apparatus 3.The end of this second negative-pressure pipeline 51 is suction inlets 52, as from fibre transportation direction (arrow 46), is provided in a side of the fiber transmission channel outside in the outer wall 101 of shredding drum shell 10, between the inlet 130 and transport 2 of feeding passage 13.With conversion equipment 64, this second negative-pressure pipeline 51 also is connected with negative pressure source 5, in an illustrated embodiment, this conversion equipment 64 is designed to a valve that has rotary body.Can alternately connect with the conversion equipment 64, the first or the second negative pressure pipe 50,51, the fibre deposition face of spinning negative pressure feeding rotor 30 so alternately is provided or be provided for siphoning away fiber 47 negative pressure-pumping mouths 52 with negative pressure source 5.For this reason, switching valve 64 is connected on the drive unit of controlling with control device 7 60.The position of the conversion equipment of representing with solid line among Fig. 1 64 is yarning positions, on this position, produces the spinning negative pressure in rotor 30, and the position that dots is a fiber conveying position, in transfer position, mainly is to produce negative pressure at suction inlet 52 places.Like this, depend on the position that conversion equipment 64 sets, fiber 47 is transported in feeding passage 13 or the suction inlet 52.

In negative-pressure pipeline 51 on the appropriate location, provide one to be used for the fiber 47 collected filters (not expression) that to siphon away significantly.The fiber skein 40 that will be spinned with feeding unit 2 is supplied with fibre-opening unit havings 1, and with shredding cylinder 11 with its shredding carding assembly single-fiber 47.With shredding cylinder 11 impurity that contains in the fibrous material is removed through impurity separating opening 12, shredding cylinder 11 is transported to fiber the feeding passage 13 from feeding unit 2.On the other hand, fiber 47 enters in the rotor 30, and on the fibre deposition face of condensing upon 33, at this, fiber 47 engages with loose thread 4.With taking out roller 41,42, in the outside of rotor 30 yarn 4 is taken out, and it is enclosed on bobbin 44.During normal spinning, suppose that conversion equipment 64 is on its yarning position, wherein, the spinning negative pressure that is produced by negative pressure source 5 is to supply in the shell 31 by first negative-pressure pipeline 50, and have seldom a part supply in the inlet 130, and, being connected of the 2nd negative pressure pipe 51 and 5 of negative pressure sources interrupted.

If the generation Yarn break just interrupts the spinning operation according to known method with yarn controller (not expression), and stops spinning.For this reason, by stopping the fiber skein 40 that feeding unit 2 interrupts supplying with shredding cylinder 11.Yet, in this operation, still keep shell 31 to communicate with negative pressure source 5.By introducing machinery or pneumatic cleaning tool, the fiber 47 that is retained in the rotor 30 is separated with the yarn shaping area 33 of rotor 30 with broken yarn head 4 simultaneously, and siphon away from here.

Between clear-up period or after cleaning, yarn 4 is supplied on the bobbin 44 and take out from bobbin 44, cut off the length of regulation, be introduced into the front of the opening of yarn take-off pipe 32, simultaneously, on the armature of discharging magnet 45, yarn moulding with deposit, then, by the spinning negative pressure that yet in yarn take-off pipe 32, works it is sent in the rotor 30, and yarn does not touch fibre deposition face 33.

In order to prevent that fiber 47 contacts the fibre deposition surface 33 of rotor 30 again behind cleaning rotor and reclosing feeding unit 2, conversion equipment 64 is placed the fiber drain position that is used for the joint operation.Reclosing feeding unit then.Like this, fibre stream is drawn onto the outside of shredding drum shell 10 through suction inlet 52.Because rotor 30 remains static, and disconnect the spinning negative pressure at shell 31 places of open-end spinning device 3, stop the suction function that spins, therefore, suction stream in the effect of suction inlet 52 places is enough to fiber 47 is transported to suction inlet 52 places on feeding passage 13 inlets 130 and by it, with the opposing action of centrifugal force, this centrifugal force is to be produced by the shredding cylinder 11 that rotates.So just made before stopping by also milling and make the fiber 47 of its shortening can not enter in the rotor 30 and reduce the intensity of joint at the shredding cylinder 11 that rotates.

Turn back at yarn 4 during the front of opening of yarn take-off pipe 32, loose thread has the shape that connects in a known way.Conversion equipment 64 is backwards to its yarning position again, and therefore, the negative pressure of suction inlet 52 is disconnected, and in the rotor 30 and the negative pressure at inlet 130 places of feeding passage 13 be unlocked (promptly providing negative pressure by 1 negative pressure circuit 50).

Since discharge magnet 45 make yarn emit and rotor 30 in suction function, yarn 4 is turned back on the fibre deposition face 33.Loose thread begins to join with the fiber 47 that is located on the fibre deposition face 33, shown in rotor fibre deposition face form fibrous ring.Then, yarn 4 is taken out and is wound on the bobbin 44 from rotor 30, simultaneously also will be still among combination with the fiber 47 constantly supplied with.

Conversion equipment 64 works to its transfer process, and this accepts its control instruction by drive unit 60 from control device 7 and realizes.Except that conversion equipment 64, usually, this control device 7 can be controlled except that the joint operation and remove other process the broken yarn, as creeling more etc.

In order to prevent broken yarn to occur, avoid part joint thin in yarn 4 in joint operating period.For this reason, when joint, must make a large amount of fibers that adapt with thickness of yarn be arranged in the yarn shaping area 33 of rotor 30.Usually, not taper because be used for the loose thread of joint operation, and only be to open, so the cross section of joint generally is that the twice of spinning yarn is many by splicing.

When yarn is taken out from rotor 30, be only for fiber 47 also will be constantly for the fibre deposition face 33 of rotor 30, so that make fibrous ring continue to increase and greater than the thickness of spinning yarn 4.Consider in joint operating period the edge of rotor fibrous ring to be continued to increase,, make it reach the starting position again by sending roller 41,42 up to binding place.At production period, when having only the speed of taking out identical, be only yarn 4 desired standard thicknesses when fiber feeding and yarn.

For avoiding to open and to disconnect feeding unit 2 simply usually for feeding unit 2 adopts complex control apparatus.Because effect of inertia, generally long than the slow rotation feeding unit 2 usefulness time of roller 41,42 and bobbin 44 of sending just can reach the speed of production that it is determined.Therefore, reaching before the synchronous condition, always need certain hour.

After joint forms a thin zone, just form a thread segment that thin section is arranged, and next be again second thin zone.This is not suitable for further processing, especially is not suitable for longer joint.

For fear of second thin zone, in the rotor 30 that a large amount of fibers are sent to be suitable for corresponding yarn take-off speed.For this reason, control the increase of feeding unit 2 and 30 fibre stream of rotor.With conversion equipment 64, the conversion from the fiber conveying position to the yarning position, can not suddenly carry out, can only little by little carry out, so that along with the increase of yarn take-off speed, the increase of fibre stream takes place.This just might cause that in the centre position of conversion equipment 64 fibre deposition face 33 and suction inlet 52 are simultaneously with a negative pressure burden.At translate phase, negative pressure is promptly at suction inlet 52 places with also play a role at shell 31 places of open end spinning apparatus, so that by the transporting velocity that increases gradually, fiber 47 is reached on the fibre deposition face 33 of rotor 30.In more detail adopt in the following method.

When preparing the joint operation, initial as mentioned above, fibre stream is sent in the suction inlet 52 again.Then, along the direction of yarning position, from fiber conveying position, at first conversion equipment 64 is changed the position a little, so that the spinning negative pressure rises gradually, and the negative pressure at suction inlet 52 places descends gradually.By a certain percentage, small amount of fibers 47 enters in the rotor 30, and simultaneously, inlet 130 places of residual fiber 47 in the feeding passage depart from out this inlet and are discharged out by suction inlet 52 thus.Transfer 64 still remains on this position, reaches up to the fibrous ring that slowly forms to be used for joint and to operate desired certain fineness.

Loose thread turns back on the fibre deposition face 33 in the spinning bosom 30 according to known mode, drops on the fibrous ring and according to traditional mode to combine with fiber thereon, then, removes from rotor 30 again.During this period, by a certain percentage, both made because a large amount of fiber 47 is sucked into suction inlet 52 and connects feeding unit, 2, small amount of fibers 47 also enters in the rotor 30.Fibrous ring can only increase at leisure, so that in the joint, follows that thick zone is unnoticed after short fine yarn part.Joint when operation, measure this spun yarn rugosity partly with many fibers that are positioned on the fibrous ring, and measure these spun yarns with the duration that fiber feeds operation in advance.The fiber 47 that has been arranged in rotor 30 during the joint operation is combined with loose thread continuously.After combination, the spinning negative pressure that acts in the rotor 30 is further improved, it is played increase the effect that yarn takes out, thereby, the ratio that fiber is entered in the rotor 30 also increases, finally preponderate at inlet 130 places of feeding passage 13 up to max vacuum, suction inlet 52 is no longer with the negative pressure burden, so that whole fibers 47 are entered in the rotor 30.

Reduce outside the fiber transmission channel as suction function at suction inlet 52 places, increase in the rotor and the spinning suction function at feeding passage 13 inlets 130 places, carry out long cycle, thereby fibre stream is entered in the feeding passage 13, be increased to the rugosity of its full load simultaneously gradually.

Be used to realize the embodiment of the piecing devices of this method, can be described with reference to figure 1 and Fig. 2.

Fig. 2 is and negative pressure source 5(Fig. 1) the downside figure of the suction pipe 53 that communicates, and suction pipe 53 extends to many adjacent yarning positions, for example the position of the rotor of free-end spinning machine normally.Each open-end-spinning equipment has a conversion equipment at suction pipe 53 places, and suction pipe 53 has web 54 and 55 at its vertical downside.Regulating original paper for two is fixed on the web 54 of edge protection (right-hand side of Fig. 2).Regulate original paper and have a groove, by this groove vacuum pipe 50 or 51 can with the downside of suction pipe 53 opening as the crow flies.Regulating element 61 is controlled between the downside and band 56 of suction pipe 53 hermetically, and band 56 links together web 54 and 55.Groove 610 has minimum size corresponding to the cross section of negative- pressure pipeline 50 and 51, but also has long length, as following described.

On the end (right-hand side of Fig. 2) of the edge protection of spinning machine, regulating element 11 has the activation button 611 of an amplification.One end of flexible member 612 is supported on this activation button 611, and the other end is supported on the web 54.Regulating element 61 has a brake 613 at its other end, and brake is the fixing regulating element 61 that discharges on negative-pressure pipeline 50 and yarning position that suction pipe 53 communicates.

Have a braking projection on the vertical limit on the regulating element 61, it can be meshed with projection 63.It is contained in projection 63 on the axle 58 that is provided in the web 55.And make it have elasticity by flexible member 630.The other end of elasticity original paper is supported on the web 57, and web 57 links together web 54 and 55.

Be supported on web 55 upper protruding blocks 63 and have an inclined-plane 631, it can handle the angled end-face 620 of regulating element 62.The end of regulating element 62 is supported between activation button 621 and the lamina membranacea 54 away from having splay end 630 flexible members 622 that amplify activation button 621, that is: regulating element 62 is pressed to the edge protection (right-hand side of Fig. 2) of machine.This assembling is caused moves in order to limit, and regulating element 62 is equipped with a brake 623 between web 54 and inclined-plane 620.

The control device 7 that the whole joint of the control that the front is narrated is handled is installed on the maintenance car 70; it can move along spinning machine 36 on its edge protection; and can selectively be fit to desirable position in numerous yarning positions; control device 7 is by rights by being connected with 70 control drive screw 71, with activation button 611 and the 621 common drive units 60 that form transfers 6.For example drive screw 71 and 72 can be the parts of electro-magnet rotor, if little by little start, promptly fully little by little or by its motion state of variation starts, and driving can similarly be finished by means of synchronized engine or with it.

What Fig. 2 showed is the conversion equipment 6 of fiber conveying position, and groove 610 has been connected the connection between suction pipe 53 and the vacuum pipe 51.On this position, regulating element 61 is fixed by projection 63, and projection is meshed with braking projection 614.If conversion equipment advances yarning position, by means of drive screw 72, if drive activation button 621 or need can manual operations for the control device 7 by maintenance unit 70.When regulating element 62 motions, it is open recovering spring 622.The splay end of regulating element 62 is at last on the inclined-plane 631 of projection 63, and the fulcrum of the projection opposing effect that recovers spring 630.Owing to recover the release of spring, discharge braking projection 614 and regulating element and get back to the home position, in the dotted line of Fig. 2, show.This position is decided by brake 631.

In case activation button 621 has discharged, owing to the release at the locational recovery spring that is supported on the brake 623 on the web 54, regulating element 62 is also got back to said original position.By recovering spring 630 projection 63 that is supported on the regulating element also has been released.

If conversion equipment is returned to again after 6 moments on the fiber outgoing position, this is by means of drive screw 71 or manually activation button 611 finishes by driving.When the recovery spring stretched simultaneously in advance, regulating element 61 was fixed on this position by the projection 63 that is meshed with braking projection 614.

In the conversion equipment 6 of Fig. 2, groove 610 has an opening bigger than the cross section of negative- pressure pipeline 50 and 51, be that groove 610 has partly been connected the connection between the suction pipe 53 and first negative-pressure pipeline 50, also connected second negative-pressure pipeline 51, simultaneously with negative pressure burden fibre deposition face 33 and suction inlet 52 in the centre position.Guarantee that like this fiber 47 does not leave suddenly individually when turning to, and always in suction pipe, locate.

Concerning fibrous material and fineness of yarn, the importantly fibre weight repiece motion that will be adapted to exactly to spin, because along with the increase of joint speed is applicable to that the cycle of this purpose shortens, and after the time-delay that can not predict fully exactly, fiber 47 is gone in rotor 30, discharge as fruit fiber, can not be ready to the fibre weight of explication suddenly., as fruit fiber 47 not suddenly but enter into rotor 30 that do not having under the situation of joint then, fiber is input on the rotor 30 exactly, and the release of fiber 47 is according to the time difference phase coadaptation that allows to increase progressively output speed.When being input to second joint during stage from the first joint stage, be used for the control of the fiber of joint operation, preferably little by little control conversion equipment 6 during this period separately, and the conversion of conversion equipment 6 can be finished at other constantly with arbitrary speed.

In order to drive conversion equipment 6, by control transmission device 7 drive screw 71 and 72 is leaned against on activation button 611 and 621, as on position shown in Figure 2 with desirable conversion quick-action.Regulating element 62 rotation projections 63 are separated from each other itself and regulating element 61 then.Drive screw 71 is got back to the home position.Yet this return motion is not to take place suddenly, but little by little takes place under predetermined condition, and motion can be that speed change is carried out, and depends on that 611 the regulating element 61 of driving on the drive screw 71 little by little is returned to the indicated position of Fig. 2 dotted line that is:.By the release of regulating element 62, projection 63 is also in this abrupt release.

Regulating element 61 at first only turns on the connection of the second negative pressure pipe 51 in home position.On this fiber conveying position of conversion equipment 6, the fiber of being carried by transport 47 siphons away from shell 10 through suction inlet 52, and stops fiber to enter into rotor 30.

Certain distance in case regulating element 61 has been passed by, groove 610 also are on the position, and on this position, dominant negative pressure promptly also plays a role in second negative-pressure pipeline at first negative-pressure pipeline 50 in suction passage 53.Part fiber 47 enters into the rotor 47 that is still rotating.And another part fiber 47 enters into negative-pressure pipeline by suction inlet 52, owing to regulate regulating element 61 further, then the negative pressure in first negative-pressure pipeline 50 still is unimpeded, and the vacuum in second negative-pressure pipeline 51 still gets clogged.Provide fiber 47 in rotor 30, and increase gradually according to the adjusting of conversion equipment 6, promptly the regulations speed according to regulating element 61 increases, so desired fibre weight is determined exactly in simple mode when joint, and can be adapted to the growth of yarn output speed.In the joint operation, reached height reliability like this.

Allowing to drive also from maintenance car 70 with reference to the described conversion equipment of Fig. 26 can hand drive, and if possible, secured adjusted element 61 is very simple.

The conversion equipment 8 that is particularly suitable for the simplification that driven by maintenance car 70 is described with reference to Fig. 3.Regulating element 81 is fixed in the shell 80 movably.Shell 80 is respectively by lid 82 and 83 its both sides of sealing.The flexible member 84 of the carrying regulating element 81 of lid on 83 directions be fixed on cover 82 and regulating element 81 between.Lid 83 has a central passage 830, and the adjusting screw(rod) of regulating element 81 extends out thus.

Regulating element 81 has two control channels 811 and 812, and when flexible member 84 when being lax, control channel 811 communicates with two segment pipes 500 and 501.These pipelines 500 and 501 are used for first negative-pressure pipeline 50 is connected to conversion equipment 8.The second channel 812 of regulating element 81 is connected to the second negative pressure pipe 51 on the converter 8 being used on its end position, and two sections pipes 510 and 511 link together.

On yarning position, on the position shown in regulating element 81 is fixed on, wherein control channel 811 is led on the fibre deposition face 33 in line with negative pressure pipe 50, so when suction inlet 52 does not have dominant negative pressure, keep the suction function in the rotor 30, because dominant spinning suction function in the rotor 30, therefore, fiber 47 enters on the fibre deposition face in the rotor 30.

For regulating element 81 is entered on the fiber conveying position, on this position, the negative pressure of entering the yarn hole at suction inlet 52 places, in fibre transportation is that active force that stop and effect, by adjusting screw(rod) 810 is enough to and flexible member 84 effects mobile regulating element 81 in the other direction.Therefore control channel 812 is in line with negative-pressure pipeline 51, in negative-pressure pipeline 51, negative pressure suction inlet 52 places preponderate and rotor in the spinning negative pressure be cut off, control device 81 is enough to discharge adjusting screw(rod) 810 so that spring element 81 is got back to said yarning position in order to return.

In this case, be applied to the also available manually-operated of pressure of adjusting screw(rod) 810.When using this automatic joint operating means, adjusting screw(rod) 810 can be controlled by means of an electromagnet (not showing) or by means of the drive screw of the maintenance car 70 that moves around.The conversion of conversion equipment 8 also can be carried out gradually, that is, if pipeline 500,501,510 and 511 is suitably arranged and suitably controlled to adjust element 81 by control device 7, also can little by little change.

Two control channel 811 and 812 guarantees: for preventing that fiber 47 and leftover yarn from entering in shell 80 and the regulating element 81, inhale stream and will directly pass through conversion equipment 8 consistently when inhaling stream.This operation is by offering each vacuum tube 50 and 51 with control channel 810 and 811 respectively, makes pipe 500 and 501 or manage 510 and 511 in line.

When regulating element 81 conversions, one or more ribbons 47 are in the conversion that enters into control channel 812 or enter pipe 511 from control channel 812 from pipeline 510 just in moment.Fiber 47 also can be located between pipeline 500 and the control channel 811 and in control channel 811 with manage in the transition region between 501, and this is extraordinary.In this position for preventing that fiber 47 or loose thread portion from clamp-oning between regulating element 81 and the shell 80.Control channel 811 and 812 edge 813,814,815 and 816 and pipeline 500,501,510 and 511 edge 800,801,802 and 803 or the edge of the shell 80 corresponding with them be designed to sharp edge shape, so, the edge 800 and 813 of static and motion, 814 and 801,802 and 815 and 816 and 803 constitute shearing device in line, in couples, when regulating element 81 conversions, use is positioned at the fiber 47 and the remaining yarn in these shearing device zones, so a part of fiber is cut in control channel 811 or 812.And residual fiber has been avoided clamp-oning of regulating element 81 just in negative- pressure pipeline 50 or 51.

Similarly, conversion equipment 64(Fig. 1) or 6(Fig. 2) co-operate edge and negative-pressure pipeline 50 with 51 or the connected ozzle (not marking) that is connected be designed to shearing device.

Further improve and comprise: with being in equivalent substitution and also may being the change performance that mutually combines, this should will fall into scope of the present invention, for example see figures.1.and.2 among the embodiment of described piecing devices, two negative- pressure pipelines 50 and 51 are received common negative pressure source 5 or are received on the shared intake line 53.If wish, also can be each negative- pressure pipeline 50 and 51 negative pressure source separately is provided significantly, in this case, negative-pressure pipeline 50 with 51 with the tie point of these negative pressure sources by the conversion equipment that separates or by shared conversion equipment 64,6 or 8 finish, and this clearly illustrates that in Fig. 3.

If conversion equipment 64 has an adjusting screw(rod) that radially outward stretches out and by maintenance car drive screw 71(Fig. 2) adjusting screw(rod) that provides in one direction, it is feasible driving maintenance car 70 simply with the conversion equipment 64 that is designed to rotating valve.Can finish by means of the flexible member of torsion spring and return.

With reference to having the open-end-spinning equipment of friction roll 34, shown in Figure 4: several cylinders have replaced shredding cylinder 11 conveying fibers, and first cylinder 14 is used for fibrous material that shredding spinned and it and is designed to the shredding cylinder in this case.Second cylinder 15 is fixing rotationally between fibre-opening unit having 1 and friction roll 34, and it is designed to disc format, and in its outside a cohesion face 150 is arranged.Cohesion face is connected with fibre-opening unit having 1 by feeding passage 13, and feeding passage 13 leads to the cohesion surface with the tangential direction of rotating, and its width is suitable for cohesion face 150.

Cylinder 15 is fixed on the hollow shaft 152, the system axle is fixed on the machine rack, and cylinder 15 extending on the direction of vertical plane on the axle 340 of friction roll 34, and driving direction is the direction of arrow 460.In shaft extension, for the sake of clarity, cylinder 15 has a bigger distance from the spinning triangular zone territory of friction roll 34.Yet cylinder 15 enters into the joint cover zone as far as possible, so that the passage of fiber from cohesion face 150 to the spinning triangular zone territory is short as much as possible.

Controllable suction nozzle 35 is fixed on the side in the spinning triangular zone territory of friction roll 34, and it sends roller 41 and 42 away from removing, and when fibre transportation arrived friction cylinder 34, fiber remained on the cohesion face with holes 150 under the effect of suction stream.Be this purpose, disc cylinder 15 is connected with the suction apparatus (not shown) by means of hollow shaft 152.Yet, inhale and flow on the fan section I that only acts on the cohesion face 150.This fan section be fed into from fiber on the direction of rotation of cylinder 15 cohesion face 150 positions prolong on to the off-position of carrying the decision of covering of the fan II.Carry the covering of the fan II by partition 151 with inhale flow point and separate, so fiber 47 can discharge from cohesion face 150 automatically, the covering of the fan II is opposite with carrying, what shell 10 had a feeding passage 16 that leads to friction roll 34 enters hole 160.

Preferably help and quicken from the cohesion face fiber release with guarantee all fibers enter the spinning gusset piece on.By air is realized this purpose towards the introducing covering of the fan II that friction cylinder 34 flows through the cohesion surface.When having at least a friction roll to be subjected to inhale stream effect and shell 10 to stretch out above friction roll 34 with the form of sealing, the air that comes from the covering of the fan II is inhaled stream and is formed this strand air-flow.For the needed air of this purpose flows through the pipeline 153 that is inserted in the hollow shaft 152, and the covering of the fan II is communicated with atmosphere.

If this quantity can not be used, pipeline 153 also can link with air compressor, and the cohesion face in the covering of the fan II is by the burden of superpressure slightly.When making fiber be fixed on the fibre deposition face with pneumatic means input fiber or when separate, fiber also mechanically remains on the cohesion face, for example use the method for the cohesion face that the is installed in 150 outer spicules of placing (not showing) except described.

On the cohesion face 150 in fiber 47 feeding zones, produce the inertia effect, and make by being subjected to the effect of attenuating blast on the fiber 47 that feeds passage 13 conveyings, and guarantee under fiber on the cohesion face on their direction of motion 150 deposits in the mode of suitable orientation, and covering of the fan III that extend to the opening part of feeding passage 13 adjacent with covering of the fan 2 makes it not be subjected to the effect of air-flow by fixing dividing plate 154, in the zone of sector III, the outer wall 100 that almost extends to cohesion face 150 also is provided, suction inlet 52 is arranged on this outer wall 100 places, i.e. the outside of fiber transmission channel between fibre transportation mouth 160 and feeding passage 13.

In spinning process, the fibrous material that will resemble ribbon 40 by conveying cylinder 20 is delivered on the shredding cylinder 14 by feeding plate 21, by shredding cylinder 14 ribbon 40 is separated into fiber 47, forming conveying by the negative pressure in the covering of the fan I of cylinder 15 flows, delivery air is transported to separated fiber 47 on the cohesion face by feeding passage 13, and fiber 47 deposits thereon.

On this cohesion face 150, carry the fiber 47 that is fed into rotation cohesion face 150 and is multiplied simultaneously by means of the covering of the fan I, thereon, fiber 47 leans on pneumatic or/and be mechanically secured on the inlet 160 of feeding passage 16, because the cohesion face 150 in the guide plate zone moves with the direction that yarn takes out, fiber 47 supplies are entered in the guide plate shape zone of the conveying covering of the fan II parallel with the yarn axle.Here, they are connected to the swirling eddy loose thread, and twist into yarn 4.

If yarn breaks end, the fibrous material that supplies to shredding cylinder 14 just stops by stopping feeding unit 2.In addition, the negative pressure on friction roll 34 just is closed.In order to prepare the joint operation, loose thread is returned and enters the spinning roller gap of friction roll 34, and this process is by finishing under the assistance that becomes effective suction stream in suction nozzle 35 now.Then feeding unit 2 is opened, and does not therefore have fiber 47 to arrive friction roll 34, and the negative pressure of supply is led to by negative-pressure pipeline 51 outside the suction inlet 52 of friction roll 15 peripheries, and air flow, is carried in the conversion portion II along pipeline 153.Enter suction inlet 52 then.Be transported to fiber 47 on the cohesion face along with this strand air flow from cylinder 14,, then in the negative suction pipeline 51.At this in a flash, it has adapted to returning of yarn, just turn off at suction nozzle 35 and the negative pressure in negative-pressure pipeline 51, negative pressure in friction roll 34 or a negative pressure in them just are unlocked, from the spinning triangular zone of friction roll 34, remove yarn 4, and fiber 47 is fed to again on the spinning triangular zone and connection here simultaneously.

According to the device among Fig. 4, also can the controlling fiber bundle by air switching stream, in spinning process, before they arrive spinning organ, see the unwanted fiber 47 of stopping period in spinning process off, in joint operating period, new fiber 47 is supplied with spinning organs and is guaranteed only to have unspoiled fiber 47 to arrive in the spinning organs, therefore the yarn of producing 4 has higher intensity, even in its joint area.

Shown in the dotted line among Fig. 4, in another design of described device, suction inlet 52 is arranged in the outer wall 101 of shredding cylinder 14 of following current of feeding passage 130, rather than be arranged in the outer wall 100 of cylinder 15, when suction inlet 52 is arranged on outer wall 101 places of shredding cylinder 14 and application of sub-atmospheric pressure to the inside, in order to prevent that fiber 47 from arriving the cohesion face of cylinder 15, negative pressure in the covering of the fan I of second cylinder 15 and the negative pressure in the friction roll 34 are controlled simultaneously, sopped up by suction inlet 52 as the outer wall of fruit fiber 47 at cylinder 14, negative pressure at suction inlet 52 is just connected, and the negative pressure in the covering of the fan I of cylinder 15 and in friction roll 34 just is closed.

In order to simplify fiber 47 from shredding cylinder 14 or cylinder 15 are transported to subsequently feeding passage 13 or 14 inlet 130 or 160, selectively pipeline 153 is connected in atmosphere or compressed air source (not having diagram) or the suction source (negative pressure pipe 151), for this purpose, design corresponding conversion equipment and (see 64,6 or 8) pipeline 153 is connected in atmosphere or the compressed air stream, on the direction of friction roll 34, leave cylinder 15 as fruit fiber 47 by fibre transportation mouth 160, and suction inlet 52 separates with negative pressure source 5,, and dominant negative pressure is passed through negative-pressure pipeline 50 in friction roll.

; do not flow out as fruit fiber 47 by feeding tube channel 16; but flow out by suction inlet 52; friction roll 34 just separates with negative pressure source by conversion equipment; suction inlet 52 is just along with fibre transportation mouth 160 communicates by negative pressure pipe 51 and negative pressure source 5; in order to guarantee that fiber 47 also firmly is placed on the cohesion face 150 in zone of covering of the fan II, pipeline 153 just simultaneously and negative-pressure pipeline above-mentioned 51 be connected.In this method, no matter when, the covering of the fan II of this cylinder 15 and suction inlet 52 all are subjected to a suction function.

Fig. 5 has represented in order to realize another modification of described method equipment, in this embodiment, conversion equipment 9 has a dividing plate 90, and dividing plate can make the inlet 130 of feeding passage 13 selectively cover or be unimpeded, for this purpose, the drive unit 91 dispensing dividing plates 90 that show of diagram only.Dividing plate 90 can be regulated by manual or a drive screw 71, and drive screw is driven by the transmission mechanism 92 that uses drive unit 91.

The design driven device 91 as required, for example, can be one or two arms, may be curved bars, can be the carriages that an inclined-plane is arranged in order also to be designed to traverse 90.Dividing plate 90 also has a spring element 93 that is used to return (Fig. 7).

In fact, dividing plate 90 is mounted on the prolongation of outer wall 101 of shredding drum shell 10.Be transported to the fiber 47 of suction inlet 52 along the direction of arrow 46 at its terminal 907(, at first arriving this end) dividing plate 90 leaves pine and rolls 11 and have a bigger distance of leaving loose cylinder 11 than circumferential wall 101 apart from a(big, promptly as look up, the wall 101 of 907 front ends apart from a in fibre transportation side ₁Greatly.In other words, the fiber that is fed to suction inlet 52 arrives at last, the distance b between the end 908 of shredding cylinder 11 and dividing plate 90, and distance b is less than the distance b between the outer wall 101 that follows these terminal 908 parts and shell 10 closely ₁, in Fig. 5, look along fibre transportation direction (arrow 46), the outer wall that exceeds along the shell 10 of fiber entry 130 is stretched out in the rear end of dividing plate 90.Therefore, the outer wall 101 of shredding drum shell 10 is overlapping in the mode of roof sheet tile with first end 907 of dividing plate 90, and similarly, second end 908 of dividing plate 90 overlaps on the outer wall successively in the mode of roof sheet tile.These all measures are in order to guarantee, when inlet 130 is capped, do not form the edge of protrusion, make the fiber 47 can not be last or pile up in dividing plate 90 fronts, if a lot of fibers enters rotor 30, or in the engaging friction cylinder 34, when the inlet 130 of feeding passage 13 is switched on, therefore damaged the joint operation.

According to Fig. 5, the tip designs of negative-pressure pipeline 51 becomes an one-way cock in a conversion equipment 512, just can be controlled at negative pressure in the negative-pressure pipeline 51 by it.In the embodiment of explanation, one-way cock is installed in the chamber 513, and in turn, this chamber is installed in the end of the negative-pressure pipeline 51 that turns to maintenance car 70, and maintenance car 70 can move along spinning machine 36.Axially lead the center that is installed in chamber 513 of inserting for one that is used to carry out valve 515.Carry out valve 515 and change by a spring element 516, the other end of spring element is to remain on the yoke 517, uses yoke 517 to make to lead to insert 514 and strictly link to each other with the outer wall of chamber 513.Chamber 513 has an opening 519 it on the one side of maintenance car 70, this opening is surrounded by a valve seat, seals or conducting by carrying out valve 515.

Second negative pressure source 73 is installed in the maintenance car 70, also has negative pressure source 5 to be installed in the spinning machine 36.

A telescopic intake line 74 is from negative pressure source 73 stretches spinning machine 36.The intake line 74 that provides has a drive machines 75, and by means of it, the suction nozzle of intake line 74 can be closed, and is close to the wall with the nearest maintenance car 70 of chamber 513, or can withdraws therefrom.A pin 742 is to be installed in the suction nozzle 740 of intake line 74 by wheel shaft 741, these pin 742 between centers ground stretch out, and surpass into yarn hole 740 and stretch to spinning machine 36, when suction nozzle 740 leans against on the chamber 513, pin 742 keeps carrying out valve seat one segment distance of valve 515 to it, opens valve then.

When normal spinning, the inlet 130 of closing device 90 conductings feeding passage 13.512 of conversion equipments that are designed to one-way cock simultaneously help it in the closed position, and fiber 47 inlet 130 by feeding passage 13 then enters on the fibre deposition face 33 of rotor 30 or on the friction roll 34, there, they connect with the end of yarn 4.

If yarn 4 broken ends, rotor 30 just stop by a Yarn detection system (not having diagram), the fiber of supplying with shredding cylinder 11 also just stops, and the spinning negative pressure still keeps in rotor 30.

After the yarning position that arrives each, maintenance car 70 just drives dividing plate 90, uses drive screw 71 to make it slide into the closed position by drive unit 91, and the opening 130 that will hold the shell 10 of shredding cylinder 11 covers.

Therefore rotor 30 is cleared up by control maintenance car 70 now in known manner, and the yarn end of preparation has one to be used for joint and to operate needed shape, discharges rotor 30 then again.Test run, when rotor is accelerated or in case when reaching the service speed of rotor, the end of yarn is just got back to its ready position, at yarn take-off pipe 32(Fig. 1) in the mode of routine, make the yarn of deposit, remove pipe 32 o'clock at yarn, dominant negative pressure remains effective in shell 31.

Inlet 130 with feeding yarn channel 13 covers then.The intake line 74 that derives from negative pressure source 73 is transformed into conversion equipment 512 by connecting motion.Therefore, the negative pressure that produces in negative pressure source 73 is fed to now inhales in the opening 52, and feeding unit 2 is opened now again, and the fiber 47 that is provided to shredding cylinder 11 is transported to then and covers mouthful 52 enter on the hole, by negative pressure pipe 51, chamber 513 and suction inlet 74 are to the negative pressure source of maintenance car 70 from here.

When feeding unit stopped, during milling, the fiber that is damaged by the shredding cylinder 11 that still rotates was pulled away, and fiber does not enter in the rotor.With returning synchronously of yarn, drive screw 71 is releasing driving device 91 again, and drive unit then makes dividing plate 90 turn back to its initial position, and the inlet 130 that at this moment feeds passage 13 is with regard to conducting.Fiber 47 is just by entering in the rotor 30 now, there, they connect with yarn and thread head, loose thread also enters rotor 30 simultaneously owing to yarn discharges again, yarn 4 is removed from rotor 30 again with known method now, by sending roller (41,42) and bobbin 44(Fig. 1), the fiber of the fibre deposition face of reaching 33 connects at there.

Enter under the dividing plate 90 unwanted average thrusts in the spinning feeding passage that leads to rotor 30 or friction roll 34.As described in Fig. 1, considerable improvement can be by changing over to and obtain gradually in fibre bundle in connection.Have been found that and can realize controlling fiber stream, in addition simpler and accurate.If inlet 130 linings of feeding passage 13 cover or have been switched on rather than control condition of negative pressure in negative-pressure pipeline 50 or 51.If the employing former approach just need not controlled negative pressure at negative-pressure pipeline 50 or in negative-pressure pipeline 51.

Therefore, 130 by dividing plate 90(Fig. 6 from suction inlet 52 to fiber entry) edge 95 progressively enlarges and enters the mouth 130, it is effective little by little changing fibre stream.Inlet 130 linings of the feeding passage 13 that provides have covered, and all fibers 47 enter negative-pressure pipeline 5 by suction inlet 52.If advancing dividing plate 90 parts of yarn hole 130 passive movements hides, the fiber 47 of the part that covers enters inlet 130 by shredding cylinder 11, also enter simultaneously rotor 30, the yarn hole 130 of advancing of the feeding yarn channel 13 that this part ground covers has reduced spinning underbalance effect at inlet 130.Therefore, transport remaining fiber 47 by shredding cylinder 11 and arrive suction inlet 52, there, have one than the 130 big dominant negative pressure that enter the mouth.

Because it is very strong but have suitable high movable that fiber 47 is not an inertia, they are sent in the fiber feeding mouth 130 by majority, and small part by shredding roll 11 and the swirling eddy guiding on the open region of the reality of mouth 130.In fact, the open area of shredding cylinder 11 direct punctures of guiding rotation inlet 130 enters fiber entry, and fiber 47 is positioned on the overlay area that enters hole 130, and the suction stream of its inlet 130 by leaving feeding yarn channel 13 siphons away and take away fiber 47.Therefore, by a part of fiber 47 of 130 that part of fiber that enters the mouth greater than the part opening of corresponding fiber entry 130.But in the method, fiber is failed easily and is separated reliably, the effect of negative pressure in the zone of the inlet 130 that feeds passage 13 is promptly depended in the centre position of depending on selection, and part fiber 47 130 enters rotor 30 or friction roll 34 is more or less by entering the mouth.The distribution of fibre stream can accurately be controlled by dividing plate 90, and the dividing plate of being close to is installed near the shredding cylinder 11 fibers/air flow with rotation.Stop fiber in dividing plate 90 fronts accumulation in addition, Here it is if possible why dividing plate 90 should be installed in another reason of prolongation of the outer wall of shell 10.

Lead jack for fear of fiber in the side and get clogged, with the such known method of fiber feeding passage according to segmentation again, the diameter that makes feeding passage 13 increases suddenly on the one side of spinning organ in the zone of dividing plate 90.

At last, if contiguous fiber no show spinning organ [rotor 30 or friction roll 34], inhaling stream is exactly insignificant in the effect of 52 li of suction inlets, just there is not further effect for conveying fiber, in order to solve the energy cost that is used for the production negative pressure, negative pressure downstream at inlet 130, promptly in negative-pressure pipeline 51, after finishing the joint operation, turn off by transfer 512, among the embodiment in Fig. 5, reach like this: maintenance of equipment 70 withdraws intake line 74 at least to enough distances, so that make pin 742 lead to lift valve 515, lift valve 515 takes on its valve seat 518 by spring element 516 then.Close opening 519, so air can not pass through opening 519 with straight line or other form.Therefore the air that may hinder fibre transportation and spinning process can not enter in the shredding cylinder shell 10.According to Fig. 6, the inlet 130 of feeding yarn channel 13 is closed by the dividing plate 90 of sliding surface shape, the solid section of dividing plate 90 is placed on the inlet 130, and cover inlet 130.

As what mention already, when fiber stops to carry, enter the hole and just close.Therefore fiber 47 is with regard to clog-free danger, and cleaning inlet 130 can not make fiber take place to block dangerous.

Usually take place to link together for fear of second thick section with yarn, and don't need after connecting, a thin part is arranged immediately, control device 7 is by driving mechanism 92 effect on 9 by this way, promptly, dividing plate 90 is irregular movement, enter simultaneously and do not cover in inlet 130 the position, this can reach by continuous but the motion or the discontinuous motion of rule.

Turning to and not only depend on inlet 130 opening degree gradually in fibre bundle, and the inertia of the main fiber that depends on utilization 47, slide if dividing plate is parallel to the axle of shredding cylinder 11, just can separate fibre bundle very accurately, as according to Fig. 5 and 6(arrow 94) situation.

With reference to figure 6 described devices, this device is to be used for changing gradually under the condition of dividing plate 90 regular motions.Enter in rotor 30 or the friction roll 34 in order to reach the fiber and the dividing plate 90 well-regulated same movement that need, dividing plate 90 can have a control opening 90, this control opening 900 has a profile making to enter the zone that the hole covers fully and make to enter between the zone of opening fully in the hole, with respect to by at feeding passage 13[Fig. 7] in the enter the mouth desirable passage of 130 the fibre stream that opening degree determined.

According to Fig. 7, control opening 900 has a zone 903 near zone 901, and zone 901 does not have residue ground conducting inlet 130,904 parts that one profile is designed to a bead 905 then are 904 parts, partly to carry out hole 130,902 parts then be along with the conducting fully in spinning process of 904 parts enters hole 130 in conducting.

When preparing the joint operation, when inlet 130 was covered, fibre stream is guiding and the inlet 130 by the feeding passage just, use dividing plate 90, when the initial zone 903 of passing through, when the drive screw 71 of dividing plate 90 has the lifter motion effect as Fig. 7, inlet 130 is just opened gradually, up to its complete conducting.A large amount of fibers 47 promptly enters in the rotor 30, and to enter rotor 30 synchronous with supplying with fiber, withdraws from again behind yarn 4 joints.In order to stop after joint operation, too much fiber 47 rests on the fibrous ring, and the fiber of supply enters rotor 30 just by the temporary transient obstruction of lip portions 905, and lip portions 905 has reduced by 130 the free cross section of entering the mouth.Increase obtains rapidly if yarn takes out speed, make inlet 130 unimpeded after, all the fibers of amount can both enter in the rotor 30, just as shown in FIG. 7 equally.

Depend on that yarn takes out the trend of speed, provide flat or more oblique curve ruler to be used for the edge 906 of bead 905, can there be a straight or curve trend side, and it is little by little by open cross-section, and no matter whether be designed to a bead 905 shapes.

Produce imperceptible especially joint.If the fibre bundle of supplying with leads to fibre deposition face (33) by feeding passage 13, because the shape of control corresponding opening 900 or the motion of control corresponding dividing plate 900 are temporarily interrupted, fibre bundle is temporarily taken away by the suction inlet 52 that is used for this period, fibre bundle only is fed on the fibre deposition face 33 again, in case the loose thread end arrives this fibril aggregation face (33), just begins to take out yarn.

With reference to figure 8～12, what describe here now is that spinning apparatus is another embodiment, in this embodiment, with 10 sealings of shredding drum shell, to stop air to flow in the zone of feeding unit 2, as shown in these figure, housing parts 17 only has ribbon supply opening 170, but this do not allow not controlled air feed flow to into or leave the shredding drum shell.In addition, the obstruction or the unimpeded negative-pressure pipeline 51 that replace of the transfer 85 that in negative-pressure pipeline 5, is provided.Be designed to the transfer 85 of guiding valve, it is installed in the closed position by spring element 850, brings open position into by the suction nozzle 74 that connects motion, and suction nozzle 74 is installed on the maintenance car 70 that enters in the negative-pressure pipeline 51 [Fig. 5].Impurity separating opening 12 with closing device 120 also is provided simultaneously, and in the embodiment of explanation, closing device 120 is designed to flap.

Just now the device of the type of describing allowed fibre bundle deflection in a simple mode, and need not control negative pressure in shell (31).Negative-pressure pipeline 51 is connected to a negative pressure source [for example on maintenance car 70 73], the negative pressure of this negative pressure source is greater than the spinning negative pressure, when intake line 74 being applied on the negative-pressure pipeline 51 with the time spent of doing of antagonistic spring element 850, conversion equipment 85 enters in its flow locations.

If flap closing device 120 is closed now, then required air can promptly take out by the yarn hole of advancing of feeding passage 13 by an opening in the shredding drum shell 10.Thereby, in carrying out the joint operation, can produce vacuum flow in the periphery of shredding cylinder by closing closing device 120.Like this, the spinning negative pressure was remained unchanged, vacuum flow also can be reverse.If the air flow that produces enters suction inlet 52 and takes away the fiber (Fig. 8) that shredding cylinder 11 is carried from feeding passage 13.

Because the part opening of flap closing device 120 will be enough to make fibre stream to be separated, thereby weakens gradually at the dominant suction function in suction inlet 52 places.When the inlet of a part of fiber by feeding passage 13 arrived fibre deposition face 33, another part fiber 47 entered suction inlet 52.According to closing device 120 openings in various degree, air flow produces the bias current of bigger or less degree in feeding passage 13.Like this, be provided to the ratio of the fiber of fibre deposition face 33, can open degree by the mouth of closing device 120 and measure.(Fig. 9)

In this way, in case adequate fiber 47 is supplied with fibre deposition face 33(and is seen: the fibrous ring 470 in rotor 30), so, other air of supplying with shredding drum shell 10 is just cut off again, makes it and feed the air that produces in the passage to be separated.Fiber 47 is taken away (Figure 10) by suction inlet 52 by the air flow in the feeding passage 13 again.

Then yarn 4 is supplied with rotor 30.Closing device 120 is synchronized with the movement with this cup brokenly so that make fibre stream open impurity separating opening (Figure 11) according to needed direction in feeding passage 13.This control is by a suitable control device effect, said control device be installed on the maintenance car and by a drive unit 92(Fig. 5) act on flap closing device 120, control in such a manner, just can make the joint of yarn and the part yarn at adjacent joint place avoid the thickness section.

Finally, when getting yarn and reach at full speed, closing device 120 arrives the position of opening fully, and spring element 850 is withdrawn into suction passage 74 from vacuum passage 51, thereby has removed the effect of spring element 850.Conversion equipment 85 has just blocked the contact between negative pressure channel 51 and the suction inlet 52 like this.Thereby, in normal spinning process, do not have air to enter shredding drum shell 10(Figure 12).

Be used for the air flow of controlling fiber stream, can be controlled on the each point of shredding drum shell 10.For example, at the housing parts 17 that receives suction apparatus 2.Yet the concrete equipment in figure if an impurity separating opening 12 is provided, forms air supply opening afterwards simultaneously and flows with controlling fiber.In case the joint operation begins to carry out and block negative pressure channel 51, the impurity separating opening just can open or close on request, and this depends on whether impurity is separated.

Control device 120 be positioned in the described device fiber channel more arbitrarily.When air velocity does not have sufficiently high centrifugal force too slowly, just there is not fiber 47 to flow out in this from shredding drum shell 10.

As mentioned above, housing parts 17 and closing device 120 prevent except flowing to into shredding cylindrical case 10 by the air feed the feeding passage 13.Thereby fibre stream is highstrung to the change of negative pressure value in the negative pressure channel 51.This just makes that fibre stream is precisely controlled, and both having made does not have impurity separating opening 12 in shredding drum shell 10, and this fiber also can be by the minor variations effect of negative pressure value in the vacuum passage 51.

Negative pressure value in the negative pressure channel 51 or flap closing device 120 can be controlled by maintenance car 70 with aforesaid way and with reference to figure 2,3 and 5.

Figure 13 has shown the another kind design of conversion equipment 86.Lobe 86 is used for replacing guiding valve shape conversion equipment 85, this lobe 86 is hinged to the top of the input 861 of vacuum passage 51 in the face of maintenance car, input 816 forms a tilted-putted valve seat, and lobe 860 can remain on the valve seat in airtight mode by the weight of itself like this.The input 861 of lobe 860 and negative pressure channel 51 is positioned in the cavity 862 together, and this chamber is an opening facing on the face of maintenance car 70.The inlet 740 of suction passage 74 remains on the opening surface from the cavity 860 of maintenance car 70 with the form of sealing.Shown in the chain-dotted line among Figure 13.

If suction passage 74 just is being connected on the cavity body 862, and were it not for the suction passage 74 on negative pressure feeding cavity body 862 opening surfaces, then lobe 860 presents the position shown in the solid line, and because the sealed contact between lobe 860 and the input 861 makes that the negative pressure advantage in the shredding cylindrical case 10 further strengthens.If after negative pressure feeding inlet 740, again negative pressure feeding suction passage 74, wherein entering the mouth 740 is with respect to the inlet on the suction passage 74 of cavity body 862.So, lobe 860 rises (position 860 with dashed lines mark) from input 861, and fibre stream can enter suction passage 74.

Though these equipment only are described according to Fig. 5～13 with reference to shredding cylinder 11, this can not illustrate that it has been used as the device of controlling negative pressure value as the conversion equipment 512 or 86 of an one-way valve designs and has been described in negative pressure channel 51.Yet it also is possible that a check valve is provided on spinning machine 36.This valve is driven by maintenance car 70 and can connect or not connect negative pressure channel 51 and negative pressure source, and this negative pressure source is supplied with spinning machine 36 and just is being subjected to the restriction of negative pressure source 5.It also is possible driving a switch by maintenance car 70, and this switch is opened by means of one or closed blade, and is same, and suction passage 74 also can be connected to the negative pressure source of supplying with on the spinning machine 36 by maintenance car 70.In general, fibre stream can be controlled by the change of condition of negative pressure.In this case, spinning negative pressure or negative suction or both whiles can change.

Claims (20)

1, a kind of method that is used for carrying out Yarn connecting at open-end spinning device, this device has a fibre rod feeding device and a shredding cylinder, this shredding cylinder is installed in the shell, in normal spinning process, fiber by the air-flow band that the spinning negative pressure produces from this shredding cylinder, supply with the fibre deposition face that in shell, is rotating by fiber feeding passage, in this method, in the Yarn connecting operating process, the end of a thread turns back in the shell of fibre deposition face, from this line that had before returned is extracted out once more then, and fiber is spliced continuously, wherein, remove the unwanted fiber of Yarn connecting for before being returned at the end of a thread, feeding unit is started, fibre stream departs from out the feeding feeder connection and is fed to the absorption device, this absorption device is arranged in the downstream of shredding drum shell fiber feeding feeder connection, make fiber do not enter feeding passage and fibre stream only when actual joint program begins deviation go in the fiber feeding passage, the invention is characterized in, for the end of a thread is imported in the spinning apparatus, open the spinning negative pressure, the end of a thread is only returned in the spinning apparatus to such degree, be that it does not contact fibre deposition face, turn off the spinning negative pressure then, unlatching is arranged in the absorption device of shredding drum shell, make when opening feeding unit, fibre stream departs from out the feeding feeder connection and is siphoned away by the absorption device under the effect of absorbing device, arrive fibre deposition face so that prevent them, begin until actual Yarn connecting program, the absorption device is turned off, and the spinning negative pressure is opened again, makes fibre stream be supplied on the fibre deposition face again, and cooperate with it in time, the end of a thread is returned fibre deposition face.

2, the method for claim 1, the shutoff of negative pressure and opening once more of it is characterized in that spinning occurs between negative pressure source and the fibre deposition face.

3, the method for claim 1, it is characterized in that in order to remove the unwanted fiber of Yarn connecting, fibre stream at first departs from out the feeding feeder connection and is led out, then fibre stream is temporarily delivered to fibre deposition face, depart from out the feeding feeder connection then and led out once more, fibre stream has only arrived fibre deposition face and yarn at the end of a thread and just has been sent on the fibre deposition face once more after having begun to remove.

4, method as claimed in claim 2, it is characterized in that in order to remove the unwanted fiber of Yarn connecting, fibre stream at first departs from out the feeding feeder connection and is led out, then fibre stream is temporarily delivered to fibre deposition face, depart from out the feeding feeder connection then and led out once more, fibre stream has only arrived fibre deposition face and yarn at the end of a thread and just has been sent on the fibre deposition face once more after having begun to remove.

5, as each described method in the claim 1 to 4, it is characterized in that in order to remove the unwanted fiber of Yarn connecting, used a negative pressure, it is positioned at the outside of fiber transmission channel, face toward the periphery of the fibre transportation cylinder in shredding cylinder downstream, rather than be positioned at the position on the shredding cylinder periphery.

6, a kind of device that is used for carrying out Yarn connecting at open-end spinning device, this device comprises a fibre rod feeding device, a shredding drum shell that has the shredding cylinder, a fibre deposition face that in shell, rotates, article one, the fiber from shredding drum shell guide fiber cohesion face feeds passage, a negative pressure source and a suction inlet that is positioned on the shredding drum shell perisporium that is used for producing negative pressure is characterized in that the present invention also comprises:

The first aspiration line device is applicable to selectively by described negative pressure source, provides negative pressure with the form of spinning negative pressure to fibre deposition face;

The second aspiration line device, this device is communicated with the suction inlet of described absorption device, be applicable to selectively by described negative pressure source, provide negative pressure with the form that departs from negative pressure to the circumference of fibre-opening unit having, this departs from negative pressure will be offseted the inlet of fiber feeding passage by the fiber of shredding, so that siphoned away by absorbing device by the fiber of shredding, prevent from thus to be fed to fibre deposition face by the fiber of shredding; And

The suction control device links with the negative pressure source and first and second aspirator, is used for controllably changing the spinning negative pressure and departs from the size of negative pressure, so that obtain unnoticed Yarn connecting by described spinning apparatus.

7, device as claimed in claim 6 is characterized in that described negative pressure source comprises the first negative pressure source device and second a negative pressure source device that is suitable for providing at suction inlet suction function that is suitable for providing the spinning negative pressure.

8, device as claimed in claim 6, it is characterized in that being provided with a control device that is used for controlling suction control device and Yarn connecting device, this Yarn connecting device has a yarn return mechanism and is used for that the end of a thread is turned back to one and shifts out ready position in the pipe at yarn, and a releasing device is used for discharging the end of a thread and makes it turn back to fibre deposition face.

9, device as claimed in claim 7, it is characterized in that being provided with a control device that is used for controlling suction control device and Yarn connecting device, this Yarn connecting device has a yarn return mechanism and is used for that the end of a thread is turned back to one and shifts out ready position in the pipe at yarn, and a releasing device is used for discharging the end of a thread and makes it turn back to fibre deposition face.

10, device as claimed in claim 8, it is characterized in that aspirating control device (6,8) is the part of conversion equipment, selectively negative pressure source (5) is connected on the fibre deposition face (33,150) as the spinning negative pressure, or receives suction inlet (52) and upward fiber is absorbed.

11, device as claimed in claim 9, it is characterized in that aspirating control device (6,8) is the part of conversion equipment, selectively negative pressure source (5) is connected on the fibre deposition face (33,150) as the spinning negative pressure, or receives suction inlet (52) and upward fiber is absorbed.

12, device as claimed in claim 6, it is characterized in that aspirating control device (8) two control channels (811,812) are arranged, one of them can and lead to the first aspiration line device (50) aligning of fibre deposition face (33), and wherein another second aspiration line device (51) that can and lead to suction inlet (52) is aimed at.

13, device as claimed in claim 6 is characterized in that aspirating the fixed edge (800,801,802,803) of control device (6,64,8) and movable can constitute the switching limit to the active edges (813,814,815,816) that fixed edge is aimed at.

14, device as claimed in claim 6 is characterized in that aspirating control device (6,8,85,512,9) and drives motion in one direction by transmission mechanism (92), and is provided with a flexible member (612,622; 84; 850; 516; 93) finish the action of returning.

15, device as claimed in claim 6, it is characterized in that aspirating control device (6,64,8,85,86,512,9) can be by maintenance car (70) control, and this car can move along a plurality of spinning apparatus.

16, a kind of device that is used for carrying out Yarn connecting at open-end spinning device, has a negative pressure source that is used for producing the spinning negative pressure, and controllable suction inlet on the perisporium of shredding drum shell, it is characterized in that, one second negative pressure source (73) is arranged on maintenance car (70), this car can move along a plurality of spinning positions, and by conversion equipment (6; 512,9) selectively opening negative pressure source (5) produces the spinning negative pressure and opens negative pressure source (73) and remove the unwanted fiber of Yarn connecting.

17, device as claimed in claim 16, the control that it is characterized in that converter (512) are that the connecting moves by intake line (74) realizes, this pipeline arrives converter (512) from maintenance car (70).

18, device as claimed in claim 16 is characterized in that converter (86) controlled by the negative pressure in the intake line (74), and this pipeline is from maintenance car (70).

19, device as claimed in claim 18 is characterized in that converter (512,86) comprises a check-valves.

20, as each described device in the claim 6 to 19, it is characterized in that the downstream of fibre transportation cylinder (15) in shredding cylinder (14), and suction inlet (52) is disposed on the outer wall (100) of conveying cylinder (15), rather than is positioned on the outer wall (101) of shredding cylinder (14).

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