CZ2005792A3 - Method for recovery of component yarn spinning, particularly on rotor spinning machine, using a splicer, and apparatus for making the same - Google Patents

Abstract

When restoring the spinning of the yarn component, in particular the narotor spinning machine by means of the splicer (62), the end of the yarn yarn (5) unwound from the final bobbin (41) is guided to the splicer (62) where it is brought to rest. The newly emptied component yarn (3) is gradually inserted into the splicer (62) after being fed to the auxiliary flange (611). The newly emptied component yarn (3) is pulled off the spinning unit (1) by the draw-off device (2) of the component yarn (5) and after the full component yarn moves with the splicer (62), the yarn is placed in the temporary position (62). vacuum reservoir (73), then stopping in the splicer (62), and downstream of the splicing sleeve (6211) of the splicer (62) to form a connecting end of the newly emptied component yarn (3), which is then coupled to the connecting end of the component yarn (5) unrolled from the final coil (41), the accelerated exhaust is consumed to consume the stock of the newly emptied component yarn (3) from the temporary vacuum reservoir (73) and then proceed to a normal exhaust of the evacuated component yarn (3) of the working site. Until the newly emptied component yarn (3) has been stopped, the full-blown newly emptied component yarn (3) extends outside the area of only potential contact with the connecting end of the component yarn (5) unwound from the final coil (41). The stopped newly emptied component yarn (3) is brought into the area of connection with the connecting end of the component yarn (5) unwound from the final coil (41) and the coupling end of the full-length newly emptied component yarn (3) is connected with the connecting end of the component yarn (5) unwound from the final coil (41). The apparatus for performing the method of joining the end yarns (5) comprises a splicer

Description

(57)

To recover the spinning of the component yarn, in particular on the rotor spinning machine by means of a splicer (62), the end of the component yarn (5) unwound from the final spool (41) is guided into the splicer (62) where it is brought to rest. After spinning to the auxiliary yarn (611), the newly spun component yarn (3) is gradually fed into the splicer (62). The newly spun component yarn (3) is withdrawn from the spinning unit (1) by the component yarn draw-off device (2) and after the full-component component yarn has been moved through the splitter (62) a temporary vacuum reservoir (73), then stops in the splicer (62) and is interrupted behind the splicing chamber (6211) of the splicer (62) to form the joining end of the newly spun component yarn (3), 5) unwound from the final spool (41), whereupon an accelerated withdrawal is initiated to consume the stock of the newly spun component yarn (3) from the temporary vacuum container (73) and then proceed to normal removal of the spun component yarn (3) by the work station. Until the newly spun component yarn (3) is stopped, the fully-fledged newly spun component yarn (3) is routed outside the area of even potential contact with the connecting end of the component yarn (5) unwound from the final spool (41). Stopped newly spun component yarn (3) is brought into the region for joining the yarn end of the yarn (5) unwound from the final spool (41) and joining the splice end of the fully woven newly spun yarn (3) to the yarn end of the yarn (5). ) unwound from the final spool (41). The apparatus for performing the method of joining the ends of the component yarns (5) comprises a splicer (62) with a connecting chamber (6211) connected to a source of compressed air. The yarn joining device (5) is located in the working space between the yarn draw-off device (2) of the yarn yarn (3) and the yarn yarn (3) winding device (4). The splicer (62) comprises guiding means (622a) of the newly spun component yarn (3) in the junction chamber (6211) outside the area of even potential contact with the junction end of the component yarn (5) unwound from the final spool (41); 622), the control means of the guide means (622a) is assigned. Or, the splicer (62) comprises the guide means (622b) newly spun. the component yarns (3) outside the connecting chamber (6211), the guide means (622b) being associated with the control means of the guide means (622b).

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A method for recovering the spinning of a component yarn, in particular on a rotor spinning machine by means of a splicer and a device for carrying out the method

Technical field

BACKGROUND OF THE INVENTION The present invention relates to a method for recovering spinning of a component yarn, in particular on a rotor spinning machine by means of a splicer, in which the end of the component yarn unwound from the final spool is guided into the splicer. a newly spun component yarn, wherein the newly spun component yarn is withdrawn from the spinning unit by the component yarn draw-off device and after the full component yarn has been moved through the splicer, the yarn begins to be deposited in the temporary vacuum container before splicer the splicer chamber is interrupted to form the joining end of the newly spun yarn component, which is then joined to the joining end of the component yarn unwound from the final spool, and then accelerated withdrawal is initiated to consume the stock of the newly spun yarn the yarn from the temporary vacuum container, and then the normal take-off of the spun component yarn by means of the working place.

The invention further relates to a device for joining the ends of the component yarns in the spinning recovery process after its interruption, in particular on a rotor spinning machine for producing the component yarns, which comprises a splicer with a coupling chamber connected to the compressed air source. the yarn is located in the working space between the spun yarn draw-off device and the spun-yarn composite yarn winding device.

BACKGROUND OF THE INVENTION

In the production of yarn on rotor spinning machines, yarn breakages occur for various reasons, after which the spinning process is terminated and, among other things, the yarn ends must be joined during its renewal.

Attaching the newly spun yarn to the end of the broken yarn unwound from the final spool is relatively simple for single-component yarns made from a staple fiber strand. Here, the end of the yarn from the final spool is fed to • * • 9 · 9

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999 of the spinning unit, in which a new yarn starts to spin at the end of the yarn lowered onto the groove of the spinning rotor, whereby the connection point, the so-called spinner, is not usually a disqualifying defect of the produced yarn.

A qualitatively different method of recovering the spinning requires the breakage of the component yarn, one component of which is constituted by a flexible linear textile material with high elastic deformation. After the elastic component yarn has been broken, it will usually contract and twist its ends, making it impossible to introduce the yarn end thus deformed into the spinning unit and the collecting groove of the spinning rotor.

For this reason, the piecing after breaking of the elastic component yarns is essentially carried out on an auxiliary yarn which exhibits suitable spinning properties, i.e. in particular strength and limited elasticity. The rotor spinning machine operating device, which is displaceable along the machine work stations, and which comprises a bobbin with an auxiliary yarn winding and a yarn joining device, is used to restore spinning.

The known spinning of the component yarns on the rotor spinning machine described in CZ PV 2001 - 3200 is carried out by passing the end of the spun component yarn already spun into the vacuum waste channel through the splicing device and the auxiliary yarn through the splicing device into the spinning unit the spinning rotor groove for spinning.

After the spinning recovery cycle has started, staple fibers fed to the spinning rotor from the sliver are spun onto the auxiliary yarn. The newly spun yarn is drawn through the splicing device, whereupon the resilient linear component is started, which in the rotor joins the spun component to form a component yarn. The yarn exiting the spinning unit initially as an 'ordinary' spun yarn and after starting to feed the flexible linear component as a component yarn is monitored by a quality sensor and is discharged into the vacuum waste channel downstream of the junction through which it passes. As soon as the quality pickup device signals that the spun yarn is already a full-fledged yarn, the temporary spun yarn stack of the spun yarn is attached upstream of the splicing device, gripping the component yarn downstream of the splicing device and cutting there to form a new end of the yarn passing through the coupling device held at

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4444 44 4444444 while still being stored while the discarded full-fledged component yarn is stored in a temporary vacuum container. Thus, both the end of the newly spun component yarn and the end of the component yarn unwound from the final spool are stationary in the splicing device, which are subsequently joined by the splicing device. After joining both ends of the component yarn, the normal spinning process continues, in which the end of the component yarn unwound from the final spool in the preparatory phase is first wound on the final spool and the newly spun yarn including the part which was stored into the temporary yarn magazine. From the start of the winding of the component yarn to the consumption of the reserve yarn from the temporary magazine, it is carried out by accelerated winding, eg with an auxiliary drive, after which the winding bobbin is returned to the rotor of the winding device of the rotor machine.

The joining of the ends of the component yarns can be done either by a knotter and one of the known types of knots (the knot joint usually meets the strength requirements but locally increases the thickness of the yarn and often forms an unacceptable yarn defect) or by splicing, i.e. the yarn by entangling by air swirling in the entangling chamber (the diameter of the splice formed in the splicer usually does not differ much from the yarn produced and is therefore not a significant yarn defect).

However, splicing using a splicer encounters problems with the high velocity of movement of the newly spun yarn by the splicer before stopping it and commencing deposition in the temporary vacuum container in front of the splicer, since in the splicer, by its principle. often resulting in damage or abrasion of the standing component yarn unwound from the final spool and collapse of the yarn splicer splice.

It is an object of the present invention to improve the usability of the splicer for joining component yarns on a rotor spinning machine.

SUMMARY OF THE INVENTION

The object of the invention is achieved by a method of recovering the spinning of the component yarn, in particular on a rotor spinning machine, by means of a splitter, the latter of which is ps3. :: ···.

The essence is that, until the newly spun component yarn is stopped, the full-fledged newly spun component yarn runs outside the area, even though only the potential contact with the yarn end of the component yarn unwound from the final spool, whereupon the stopped newly spun component yarn is brought into the junction area with the yarn end of the component yarn unwound from the final spool and unwound from the final spool.

The essence of the first device for joining the ends of the component yarns in the spinning recovery process after it has been interrupted, in particular on a rotor spinning machine for the production of a component yarn by means of a splicer, is that the splicer contains the newly spun component yarn. contacting the connecting end of the component yarn unwound from the final spool, the guiding means being associated with the guiding means of the guiding means.

According to a preferred embodiment, the guiding means of the newly spun component yarn in the connecting chamber outside the region of even potential contact with the connecting end of the component yarn unwound from the final spool is formed by an adjustable separating partition.

The essence of the second device for joining the ends of the component yarns in the spinning recovery process after it has been interrupted, in particular on a rotor spinning machine for producing the component yarn by means of a splicer, is that the splicer comprises the guide means of the newly spun component yarn outside the joining chamber. guide means for controlling the guide means.

According to a further preferred embodiment, the guide means comprises a conductor adjustable by the drive means between position A and position B, wherein in position A the conductor is in contact with the newly spun component yarn and in position B the conductor is out of contact with the newly spun component yarn.

According to several preferred embodiments, the drive means of the guide means may comprise a pneumatic cylinder or a hydraulic cylinder or an electromagnetic drive.

According to another preferred embodiment, the guide means is connected to the lid of the connecting chamber.

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The splicer is preferably coupled to the spinning machine control device.

Overview of the drawings

An exemplary embodiment of the device according to the invention is shown schematically in the drawings, in which FIG. 1 shows a front view of a working place of a rotor spinning machine with a servicing device attached, FIG. 2 shows a top view of a connecting chamber with a guide mandrel extended in position A in the spun yarn kept out of contact with the yarn from the final spool; FIG. 3 is a top view of the junction chamber with the mandrel mandrel in position B in which the newly spun yarn is in contact with the yarn from the final spool; Fig. 5 is a detailed side view of the splicer of Fig. 4, Fig. 6 of the splicer-guided embodiment of the new spun component yarn in the joining chamber in the extended position (A) and Fig. 7 of the splicer-guided embodiment by means of the newly spun component yarn in the connecting chamber in the retracted position (B).

DETAILED DESCRIPTION OF THE INVENTION

The component spinning rotor spinning machine comprises at least one row of juxtaposed yarn manufacturing stations.

Each station of the rotor spinning machine for the production of the component yarn comprises a spinning unit 1., a component yarn draw-off device 5 from the spinning unit 1 and a winding unit 4 with a final spool 41 to which the spun component yarn 5 is wound. sensors for the presence and quality of the component yarn not shown 5.

To operate the work station, for example in the case of interruption and restoration of spinning, the machine is equipped with an operating device 6, which is displaceable along at least one row of work stations.

The control device 6 comprises means for performing automatic or semi-automatic operations, for example, in the case of interruption and restoration of spinning in the event of failure or replacement of a fully wound bobbin with an empty tube. To this end, the operating device 6 comprises, among other things, a spool 61 with a spool of auxiliary yarn 611 onto which it is spun, whereby a new component yarn 3 starts to be spun off. The service device 6 comprises a splicer 62 for joining the newly spun component yarn 3 and the component yarn 5 unwound from the final spool 41_. The service device 6 also comprises an air suction device 7, which according to the illustrated embodiment is provided with filtration, and which is coupled to a vacuum source (not shown). Vacuum waste channels 71, 72 as well as a temporary vacuum container 73 of the newly spun component yarn 3 are connected to a vacuum source (not shown). In a not shown embodiment, the vacuum waste channels 7 kanály, 72 are formed by a common vacuum waste channel.

The splicer 62 for joining yarns 3 and 5 comprises a body 621 with a joining chamber 6211 and a guide means 622a, 622b. Two tangential air channels 6212, 6213 for compressed air inlet open into the connecting chamber 6211 in the body 621, the tangential air inlets>

The channels 6212, 6213 into the connecting chamber 621 are offset relative to one another. The face of the connecting chamber 6211 is provided with a hinged lid 623.

The guide means 622a, 622b comprises a guide 6221 of the auxiliary yarn 611 and 622, respectively. In the embodiment shown in Fig. 2, the conductor 6221 bridges the coupling chamber 6211 in the extended position A and in the retracted resting position B in Fig. 3, it is located outside the path of the auxiliary yarn 611 and 62, respectively. In the embodiment shown in FIG. 6, the conductor 6221 is in the extended position in the splicing chamber 6211 of the splicer 62 and keeps the newly spun component yarn 3 out of the area of even potential contact with the splicing end of the component yarn 5 unwound from the final spool. . In the embodiment shown in Fig. 7, the conductor 6221 is in the retracted position in the splicing chamber 6211 of the splicer 62 and the newly spun component yarn 3 is released to the splicing end of the component yarn 5 unwound from the final spool for connection therewith. In the not shown embodiment, the guide means 622a is formed by an adjustable baffle provided with a guide 6221 and possibly other elements.

In the embodiment not shown, the guide means 622a, 622b is assigned a control means in the form of a separate means for "slipping" the newly spun component yarn 3 from the guide means 622a,

Ps # 5§ £ 622b into the connecting chamber 6211 of splicer 62, or an adjustable latch 622a, 622b is associated with an actuable latch that holds the guide means 622a in one position, 622b in a position in which the newly spun component yarn 3 is guided outside the area of even potential contact with the splicing end of the component yarn 5 unwound from the final spool and in the second position allows the newly spun component yarn 3 to break coils for connection to it etc.

When the component yarn 5 breaks, the component yarn presence sensor (not shown) will give a signal to stop the spinning working members at the respective work station. Meanwhile, the end of the component yarn 5 is wound on the final spool. The service device 6 is moved to this workstation and its splicer 62 is set in the path occupied by the spun component yarn 5 during normal spinning.

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In the first step of the spinning recovery process, the operator finds the end of the component yarn 5 on the final spool 41, unwinds a portion of the length of the component yarn 5 from the final spool 41 and feeds it through the splice 62 joining chamber 62 into the vacuum outlet 72, 624, 625 held at the inlet and outlet of the splitter body 621. Then, the operator guides the end of the auxiliary yarn 611 through the guide means guide 6221

622a, 622b of the splicer 62 located in position A and via the take-off device 2 to the spinning unit 1 to restore spinning. In the arrangement with the guide means 622a, the auxiliary yarn 611 passes through the splicing chamber 6211 of the splicer 62, but is held by the guide means 622a outside the area of even potential contact with the component assembly 5 unwound from the final spool. When the guide means 622b is used, the guide yarn 611 is held by the guide means 622b outside the area of even potential contact with the component yarn 5 unwound from the final spool by guiding the auxiliary yarn 611 outside the splice chamber 6211.

In the second step of the spinning recovery process, spinning unit X initiates in a known manner the spinning of the new component yarn 3 by spinning onto the auxiliary yarn 611, which is withdrawn by the take-off device 2 from the spinning unit L of auxiliary yarn 611. creates a new end of the auxiliary yarn 611 for the next recovery cycle *): and subsequently the newly spun component yarn 3 passes through the splicer 62 The component yarn 5 from the final spool 41 is retained at rest in the splitter 62.

At the moment the newly spun component yarn 3 is a yarn quality sensor or only from the experience that after a certain period of time a fully-fledged component yarn has already been spun as a fully-fledged component yarn, the third step of the process is initiated.

1 to 5, in a third step, the guide 6221 of the guide means 622b is moved from the original position A to the position B, whereby the newly spun yarn 3 is moved into the joining chamber 6211. The joining chamber 6211 is closed by the lid 623 and the newly spun yarn 3 is retained by clamping means 624,625 at the inlet and outlet of the splicer 62.

6 and 7, in a third step, the guide 6221 of the guide means 622a is moved from the original position A to the position B, thereby releasing the newly spun yarn 3 to the splicing end of the component yarn 5 unwound from the final spool for connection therewith. The connecting chamber 6211 is closed by the lid 623 and the newly spun component yarn 3 is retained by the clamping means 624, 625 at the inlet and outlet of the splicer 62.

In a further process, the newly spun yarn 3 is interrupted after the splitter 62 on the downstream waste channel 71 and the separate end of the new spun component yarn 3 is aspirated into the vacuum outlet 71. The yarn 5 unwound from the final spool 41 is cut before the splicer 62 on the side the vacuum end 72 of the vacuum outlet channel, its separate end is sucked into the vacuum port 72. In this process, the newly spun component yarn

3 sucks into the temporary yarn magazine 73 between the draw-off device 2 and the splicer 62 and temporarily stores therein.

In the next fourth step, it is fed through the air channels 6212,

6213 to the compression chamber 6211 compressed air, by swirling, the end of the spliced 62 of the newly spun yarn 3 joins the end of the spliced 62 of the standing yarn 5 unwound from the final spool 41. After joining the ends of the newly spun yarn 3 and the yarn 5 the final spools 41 are loosened by the clamping means 624, 625 and extending beyond the ends of the newly spun component yarn 3 and the component yarns 5 unwound from the final spool 41 with the effect of the swirling arriving at: ρ $ 34 ^ 04 The newly spun yarn 3, which is now joined, is wound in a known manner onto the final spool 41 in the meantime.

In an alternative embodiment, the air channels 6212, 6213 begin to introduce a pressure air into the connecting chamber 6211, which during the third step immediately after retention of the spun component yarn 3 by the clamping means 624, 625.

By means of the connection of the ends, the newly spun component yarn 3 and the component yarn 5 unwound from the final spool 41, for example after breaking, a high-quality joint can be achieved repeatedly, which, in addition to good appearance, also has sufficient strength.

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PATENT CLAIMS

Claims (12)

A method for recovering the spinning of a component yarn, in particular on a rotor spinning machine by means of a splicer, in which the end of the component yarn is unwound. 5 is guided from the final spool to the splicer, where it is at rest, and in which the newly spun component yarn is gradually fed into the splicer after spinning to the auxiliary yarn, the newly spun component yarn being withdrawn from the spinning unit by the component yarn withdrawal device and with a splicer moving a full-fledged component yarn, this yarn begins before the splicer 10 is placed in a temporary vacuum reservoir, then stopped in the splitter and interrupted behind the splice splice chamber to form the splice end of the newly spun component yarn, which is subsequently joined to the splice end of the component yarn unwound from the final spool. newly spun component yarn of temporary fabrics 15, and then the normal draw-off of the spun component yarn is carried out by means of a workstation, characterized in that, until the newly spun component yarn (3) is stopped, the full-value newly spun component yarn (3) is routed outside the area of potential contact. the connecting end of the component yarn (5) unwound from the final spool, whereupon 20, stops the newly spun component yarn (3) into the region for joining the yarn end of the component yarn (5) unwound from the final spool, and joins the splice end of the fully spun new yarn component (3) to the yarn end final coils (41). 25 Method according to claim 1, characterized in that, until the newly spun component yarn (3) is stopped, the fully-fledged newly spun component yarn (3) is guided outside the splice chamber (6211) of the splicer (62) and then moved to the splice chamber (6211) a splicer (62), whereby its splice end is joined to the splice end of the component yarn (5) unwound from 30 of the final coil (41). Method according to claim 1, characterized in that, before stopping the newly spun component yarn (3), the fully spun newly spun component yarn is: · Ρ $ 34 £ β0Ζ5 4 4 4 4 44 44 « 4 * 4444 4 «(3) leads through the splice chamber (6211) in a spaced region from the splice end of the yarn (5) unwound from the final spool, whereupon a separate area of splice splice (62) for a fully fledged newly spun component interconnects the yarn (3) with the region of the connecting chamber (6211) 5 of the splicer (62) for the splice end of the yarn (5) unwound from the final spool (41) and joining the splice end of the full-blown newly spun yarn (3) to the splice end of the yarn (5) unwound from the final spool (41). 4. A device for joining the ends of the component yarns in the spinning recovery process after it has been interrupted, in particular on a rotor spinning machine for producing the component yarns, comprising a splitter with a connecting chamber connected to a pressurized air source. located in the working area between the towing A spun yarn and spun yarn winding device, characterized in that the splicer (62) comprises a guide means (622a) of the newly spun yarn component (3) in the joining chamber (6211) outside the area of even potential contact with the joining end. the component yarn (5) unwound from the final spool, the control means (622) being associated with a control yarn 20 means of guiding means (622a). Device according to claim 4, characterized in that the guiding means (622a) of the newly spun component yarn (3) in the joining chamber (6211) outside the area of even potential contact with the joining end of the component yarn (5) 25 unwound from the final spool consists of an adjustable separating partition. An apparatus for joining the ends of the component yarns in the spinning recovery process after it has been interrupted, in particular on a rotor spinning machine for producing the component yarns, which comprises a splitter with a connecting chamber which is 30 is connected to a source of compressed air, wherein the device is located in the working space between the spun component of the spun component yarn and the spun component component of the spun yarn winding device, when the splice yarn ends are connected, P $ 34 _t & 8GZj newly spun-out component yarn (3) outside the connecting chamber (6211), wherein the guiding means (622b) is assigned to the actuating means of the guide means (622b). 5 Device according to any one of claims 4 to 6, characterized in that the guide means (622a, 622b) comprises a conductor (6221) adjustable by the drive means (6222) between position A and position B, wherein in position A the conductor (6221) is in contact with the newly spun component yarn (3) and in position B the conductor (6221) is out of contact with the newly spun component yarn (3). Device according to claim 7, characterized in that the drive device (6222) of the guide means (622a, 622b) comprises a pneumatic cylinder. Device according to claim 7, characterized in that the drive means (6222) 15 of the guide means (622a, 622b) comprise a hydraulic cylinder. Device according to claim 7, characterized in that the drive means (6222) of the guide means (622a, 622b) comprises an electromagnetic drive. 20 May Device according to claim 6, characterized in that the guide means (622b) is connected to the lid (623) of the connecting chamber (6211). Apparatus according to any one of claims 4 to 11, characterized in that the splicer (62) is coupled to a spinning machine control device. P33458CZ: List of reference marks 5 3 4 40 ⁵ 6 10 61 611 62 621 15 6212 6213 622a 20 622b 6221 6222