DEVICE FOR ENTANGLING FILAMENTS OF SYNTHETIC YARN - Patent application

Abstract

The present invention relates to an apparatus (1) for entangling a plurality of filaments of a synthetic yarn (F) using a compressed fluid, the apparatus having a base body (2) for holding at least one entangling device (4) for entangling the filaments of the yarn (F) using a compressed fluid, and a protective cap (6) arranged opposite the base body, in which a compressed fluid distributor (8) for directing compressed fluid to the entangling device (4) is arranged within the protective cap (6), the protective cap (6) being movable between a closed position in which the compressed fluid distributor is arranged adjacent to the entangling device (4) to supply compressed fluid, and an open position in which the protective cap opens the entangling device (4), the apparatus having a drive device (10) capable of moving the protective cap (6) from the closed position (P2) to the open position (P1) and from the open position (P1) to the closed position (P2) relative to the entangling device (4), and a winding device (300) for winding a plurality of synthetic yarns, the apparatus comprising the apparatus (1) for entangling a plurality of filaments of the synthetic yarn (F).

Description

[Technical Field]

[0001] The invention relates to a device for entangling a plurality of filaments of a composite thread according to the preamble of claim 1 and to a winding machine comprising this device according to the characterizing part of claim 16. [Background technology]

[0002] From the prior art, devices for entangling multiple filaments of a synthetic yarn are generally known.

[0003] DE 102019006747 A1 discloses an apparatus for entangling synthetic multi-yarns using a fluid working medium, the apparatus having a yarn treatment channel formed for guiding and entangling the multi-yarns therethrough, the yarn treatment channel being defined by a plurality of wall sections, at least one of the wall sections having a through-opening extending therethrough and in fluid contact with the yarn treatment channel.

[0004] Such devices are used to carry out the interlacing of synthetic multi-filament yarns having a large number of filaments, so that the filaments forming the yarn are interlaced and form corresponding so-called interlacing and / or intertwining nodes.

[0005] This improves the processability of the composite yarn in further manufacturing steps such as unwinding the bobbin package, texturing the composite yarn and / or weaving.

[0006] However, such interlacing of the composite yarn or the interlacing of the filaments to form the corresponding interlacing nodes requires proper placement in the apparatus.

[0007] Today, such tasks are performed by operators, which is time consuming and prone to error.

[0008] Furthermore, operator intervention also poses the risk of work accidents. Summary of the Invention [Problem to be solved by the invention]

[0009] SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a device for interlacing synthetic yarns which ensures a reliable and accurate placement of the synthetic yarns in the device. [Means for solving the problem]

[0010] This problem is solved by a device for entangling multiple filaments of a composite yarn with the features of claim 1.

[0011] Furthermore, this problem is likewise solved by a winding machine which is provided with a device for entangling the filaments of the composite yarn.

[0012] According to one aspect of the present invention, there is provided an apparatus for entangling a plurality of filaments of a synthetic yarn using compressed fluid, the apparatus comprising: a base body for holding at least one entangling device for entangling the yarn filaments using compressed fluid; and a protective cap arranged opposite the base body, wherein a compressed fluid distributor is arranged within the protective cap for directing compressed fluid to the entangling device, the protective cap being movable between a closed position in which the compressed fluid distributor is arranged adjacent to the entangling device to supply compressed fluid, and an open position in which the protective cap opens the entangling device, and the apparatus has a drive device that can move the protective cap from the closed position to the open position and from the open position to the closed position relative to the entangling device.

[0013] A compressed fluid here can be understood as a working medium capable of entangling the filaments of the composite yarn with one another, preferably compressed air, which is applied with sufficient pressure to the composite yarn through a suitable entangling device, so that the filaments of the composite yarn are appropriately entangled with one another and form so-called entanglement nodes, which allow the composite yarn to be further processed.

[0014] A composite yarn can be understood in particular to be a yarn extruded from a melt, in which a plurality of filaments are extruded through a nozzle unit, which filaments are cooled accordingly and then combined into a single yarn.

[0015] The yarn is drawn from the nozzle unit through a godet, optionally with interlacing of the yarn filaments, and then wound onto bobbins, which form a bobbin package.

[0016] According to one configuration of the device, the drive is a pneumatic drive, a hydraulic drive and / or an electric drive.

[0017] Preferably, the drive is pneumatically driven, since this allows the pressure system already present in the interlacing device to be used. However, hydraulic and / or electric drives are also conceivable. Such drives have the advantage that they can be operated independently of the compressed air system of the interlacing device.

[0018] According to another configuration of the device, the drives of the protective cap are arranged asymmetrically and / or symmetrically, and one or more drives are arranged symmetrically and / or asymmetrically, so that positions for the drives can be selected depending on the position of the drives on the protective cap and / or on the base body.

[0019] The drive units may be arranged symmetrically, for example, about the central axis of the device, the drive units may also be arranged symmetrically on both sides of the central axis of the device, and / or there may be only one drive unit arranged asymmetrically in the device near the central axis of the device.

[0020] An asymmetric or symmetrical arrangement can therefore be understood as a position of the drive device, where an asymmetrical arrangement could result in jamming between the protective cap and the base body, which can be advantageously prevented by a symmetrical arrangement of the drive device.

[0021] In one preferred configuration of the device, the protective cap can be moved between the closed and open positions using symmetrically and / or asymmetrically arranged guides. A guide can be provided for the protective cap, along which the protective cap can be moved along the base body. The guide can be formed together with the drive or separately from the drive, and the guide can be arranged symmetrically or asymmetrically accordingly, resulting in symmetrical and / or asymmetrical movement.

[0022] In a symmetrical run, the guides are arranged symmetrically with respect to the center axis of gravity, whereas in an asymmetrical run, the guides are arranged asymmetrically with respect to the center axis of gravity of the protective cap.

[0023] According to one preferred configuration of the device, a medium different from and / or the same as that used for interlacing the synthetic yarn is used to drive the drive device.

[0024] Depending on the drive configuration and type of drive device used, the same media can be used. In a preferred configuration, the same media used to entangle the filaments is used to control the position of the protective cap.

[0025] However, other media are also conceivable, such as, for example, a hydraulic liquid and / or an electric current in an electric drive.

[0026] According to one preferred configuration of the device, the drive device is connected to a pneumatic pressure system, the operating pressure of which is less than, equal to and / or greater than the operating pressure of the interlacing device.

[0027] The operating pressure of the interlacing device is usually adjusted to 0.5 to 1 bar. The operating pressure of the compressed air supply or the control pressure of the winding device is preferably 6 to 8 bar. This control pressure is also used to fix the tube on the winding spindle.

[0028] For the control or drive regulation, a corresponding operating pressure can therefore be used which is adapted to the operating pressure of the intertwining or interlacing device and / or the operating pressure of the feed device for the control pressure.

[0029] Depending on the design of the supply line, corresponding pressures can be provided and, by means of a corresponding design of the drive piston, drives with different or the same operating pressure types are possible.

[0030] According to one particular configuration of the device, the position of the protective cap can be detected by means of a sensor device.

[0031] The sensor device can have a corresponding sensor and a selection means, which can determine the position of the protective cap, including corresponding optical, acoustic, magnetic and / or other sensor types, which can reliably determine the respective position of the protective cap relative to the base body and thus reliably determine the position in which the protective cap is located.

[0032] This supports automatic control of the opening and closing of the protective cap and facilitates automatic tacking with self-tacking of the synthetic yarn at the winding position.

[0033] According to another configuration of the device, first and second detection means are arranged in the open and closed positions of the protective cap, respectively.

[0034] In a preferred embodiment, each closed and open position is provided with a corresponding detection means, which allows accurate detection of the respective position, and corresponding detection means may also be provided for intermediate positions, so that intermediate positions of the protective cap can also be recognized.

[0035] According to another configuration of the device, a detector of the detection means is arranged on the protective cap and / or on the base body, the detector being connectable to a control device of the winding device by means of a connecting device.

[0036] Preferably, the device has a correspondingly suitable point coupling device by means of which the detected signals of the sensor or detection device can also be interrogated.

[0037] The coupling device is, for example, a plug and / or a socket to which a corresponding connecting cable can be connected, which can be connected, for example, to a control device for the winding device, so that the closing device of the interlacing device can also be controlled by means of this control device, which operation can also be regulated and monitored accordingly by means of a sensor device.

[0038] According to another configuration of the device, the supply of compressed air is carried out via a protective cap of the interlacing device.

[0039] The protective cap may have a corresponding supply device and nozzle assembly, by means of which compressed air is supplied to an interlacing device arranged on the base body, which uses the compressed air to interlace the filaments, thereby allowing the filaments to interlace and thus form interlacing nodes.

[0040] Usually, the nozzles of the corresponding compressed air unit are inclined so that the compressed air is supplied in the direction of the yarn guide of the interlacing unit.

[0041] According to another configuration of the device, the supply of compressed air for the control is effected by a drive piston of a drive means of a compressed air fluid connection in the base body.

[0042] In one preferred embodiment, the drive piston is provided in the base body, and therefore the corresponding coupling connection for the drive fluid of the drive piston is also provided there.

[0043] However, other possibilities are also conceivable, in which, for example, the compressed fluid connection is attached to the protective cap itself and moves together with the protective cap, so that no corresponding additional conduits are required.

[0044] In another embodiment of the device, a suction is formed on the side of the base body opposite the side where the interlacing device is located. The suction or collection line is provided for collecting and discharging the residual oil and flocculant in the device. In particular, the synthetic yarn is pre-oiled when it is fed to the godet, which can improve, for example, the friction of the synthetic yarn, the electrostatic charge of the synthetic yarn, and / or the ability to be guided along the provided yarn guide.

[0045] This oil can collect in the device during the entanglement process. In order to avoid the need for constant cleaning of the device, appropriate drain and intake channels are provided, in particular in the base body of the device.

[0046] According to another embodiment of the device, a thread application device is provided in the base body for supporting the application of the synthetic thread.

[0047] The device may have a yarn placement device that facilitates the placement of the individual yarns in the interlacing device, since in the nozzle unit multiple yarns are produced by means of multiple spinning nozzles.

[0048] The interlacing devices can interlace 8, 12 and / or 16 yarns. To facilitate the insertion into the appropriate positions, appropriate yarn insertion devices are provided which act as a support during the insertion of the yarns into the appropriate comb yarn guides.

[0049] According to another configuration of the device, the positions of the yarn placement device correspond to the closed and open positions of the protective cap. Since the device also functions automatically, the yarn insertion device is mechanically coupled to the protective cap or the base body via a transmission in relation to each position and / or has a corresponding drive for correspondingly adjusting the lowering and raising of the yarn placement device in order to assist the device in automatically inserting the yarn into the yarn guide and inserting and interlacing the respective yarn between the various positions.

[0050] In another configuration of the device, the thread insertion device is movable between a thread insertion position and a thread removal position.

[0051] In one preferred embodiment, the thread insertion device has a corresponding linkage, by means of which a corresponding thread insertion plate is movable within the device between a thread insertion position and a thread removal position. In the thread insertion position, the thread insertion plate correspondingly raises the thread, facilitating the first positioning of the thread in the corresponding thread guide comb. In the thread removal position, the thread insertion device raises the thread from the thread guide passage of the thread guide comb.

[0052] In the thread insertion position, the thread is inserted into the first thread guide passage and the second thread guide passage.

[0053] According to another aspect of the invention, the device for entangling multiple filaments of a synthetic yarn as described above can be used in a winding device for winding multiple synthetic yarns, the winding device having at least one winding spindle for winding the synthetic yarn emerging from a melting device having a nozzle unit, and a drawing device having at least one godet for drawing the synthetic yarn emerging from the nozzle unit, in which at least one device for entangling multiple filaments of a synthetic yarn as described above is arranged between the godet and the nozzle unit and / or between the godet and the winding spindle in such a winding device.

[0054] Further advantages and embodiments of the device according to the invention will be explained with reference to the accompanying drawings. [Brief explanation of the drawings]

[0055] [Figure 1] 1 is a schematic diagram of a spinning apparatus for forming a composite yarn and a winding apparatus for winding the composite yarn; FIG. [Figure 2a] 1 is a schematic side view of a device for intertwining synthetic threads in an open position for inserting the synthetic threads; FIG. [Figure 2b] 1 is a side view of a device for interlacing synthetic yarns, shown diagrammatically in a closed position for interlacing the synthetic yarns; FIG. [Figure 3] 2b is a schematic plan view of an apparatus for entangling, taken along line AA in FIG. 2a. DETAILED DESCRIPTION OF THE INVENTION

[0056] An apparatus for producing a synthetic yarn is shown diagrammatically in Figure 1. The apparatus for producing a synthetic yarn has at least one nozzle unit 101 to which a cooling device 102 is connected.

[0057] The nozzle unit 101 is provided for extruding the composite melt, through the capillaries of the nozzle unit 101 the melt is formed into filaments, which are then gathered together to form a single yarn F.

[0058] The yarn F is drawn using a drawing device consisting of at least one first godet and a second godet 104 onto a winding device 300, which forms the composite yarn F into a bobbin package 116 using a traverse device 108 and a corresponding winding spindle 112.

[0059] The godet 104 of the drawing device is mounted on the panel 200 and guides the synthetic yarn F to the winding device 300 .

[0060] Between the lay-on roller 106 and the godet 104, a device 1 for intertwining the filaments of the yarn F may be provided, as shown.

[0061] Nozzle unit 101 typically has a number of spinning nozzles each forming a number of filaments, which in turn each form a yarn.

[0062] Using the nozzle unit, generally at least eight yarns can be formed, which are fed via a drawing device to a winding device 300, which then guides the yarns to the appropriate positions, each having a traverse guide 108, which, together with a pressure roller 109, distributes the yarns to the winding tubes 114 arranged on the winding spindle 112.

[0063] The winding device 300 is designed to consistently wind the yarn extruded from the nozzle unit 101, so that the yarn can be regularly wound, doffed, and rewound. To this end, the winding device 300 also has a winding spindle revolver 110, which moves the winding spindle between the respective winding and doffing positions, so that there is always a winding spindle 112 located and fixed thereon that can wind a bobbin 114 with the synthetic yarn F to form the corresponding bobbin package 116.

[0064] In order to be able to wind the synthetic yarn F well and to be able to post-process the synthetic yarn F wound onto the bobbin package 116 well, it is necessary that the filaments of the yarn F are well entangled with one another so that the synthetic yarn does not separate into individual filaments again during further processing.

[0065] To this end, a device 1 for intertwining the filaments is provided, which may be arranged between the nozzle unit 101 and the godet in the winding position and / or between the godet 104 and the winding spindle 112 in a non-illustrated embodiment of the winding device 300.

[0066] In figures 2a and 2b an automatically reclosable device 1 for intertwining synthetic threads is shown.

[0067] In Figure 2a the intertwining device 1 is shown in the open position P1, in which it is possible to insert the synthetic thread F. The open position of the protective cap 6 is designated by the reference character P1 in Figure 2a.

[0068] The protective cap 6 is placed in the open position P1 for inserting the synthetic thread F. In the open position P1, the protective cap 6 is adjacent to the mounting plate 60 and is positioned on the other side so that the thread guide comb 32 with the thread guide passages is exposed.

[0069] The mounting plate of the device is provided with a connection for the coupling device of the sensor device 16, a compressed fluid connection 26 for the drive device 10 of the protective cap 6 and a compressed fluid connection 31 for supplying compressed fluid for the intertwining device 4 of the intertwining device 1.

[0070] Each connection is a corresponding plug and / or socket or threaded connection that allows a corresponding compressed fluid line to be connected in a fluid-tight manner.

[0071] The coupling device 24 can be a socket and / or a plug, to which a data transmission cable with the associated power supply for the sensor device 16 can be connected.

[0072] The intertwining device 1 comprises a base body 2 and the already mentioned protective cap 6, which is reciprocable along the base body by means of a guide 12 between an open position and a closed position.

[0073] The base body is provided with a mounting flange 220 by means of which the device for entangling 1 can be removably fastened to the panel 200 of the reeling device 300 .

[0074] As fastening means for the mounting flanges 220 on the panel 200, preferably a threaded connection is used, which allows for an easy exchange of the interlocking device 1.

[0075] In FIG. 2 a , the protective cap 6 is in the open position P 1 , so that the insertion of the synthetic thread F into the thread guide passage of the thread guide comb 32 is possible.

[0076] To support the insertion of the yarn F into the yarn guide passage of the yarn guide comb 32, a yarn application device 36 is provided, which has a yarn application plate which, in the open position P1, overhangs the yarn guide passage of the yarn guide comb 32, thereby enabling easy insertion of the yarn into the second yarn guide comb 32 and its associated yarn guide passage.

[0077] Furthermore, FIG. 2a shows, with the reference T2, a thread removal position T2 in which the thread F can be lifted from the thread guide passage of the thread guide comb 32.

[0078] 2b shows the closed position P2 of the protective cap 6. In this closed position P2, the protective cap 6 completely covers the yarn guide comb 32 and guides the compressed fluid distributor with multiple compressed air nozzles 80 above the interlacing device 4 with multiple interlacing passages 40.

[0079] Since the compressed air nozzle 80 is inclined toward the yarn guide, the supply of compressed air through the compressed air nozzle does not brake the progress of the yarn and does not cause deterioration or breakage of the yarn during winding.

[0080] In the open position P2, the protective cap 6 has been moved a predetermined distance away from the mounting plate 60, so that the drive part of the drive unit 10, through which compressed fluid is supplied to the compressed fluid connection 26, is visible. In addition, the compressed air supply line 33 is also partially exposed, which was previously integrated and covered in the open position P1 of the protective cap 6.

[0081] FIG. 3 shows a cross-section along the section line AA shown in FIG. 2a in the open position P1 of the protective cap 6.

[0082] From the cross-sectional view of FIG. 3, the inside of the interlacing device 1 for interlacing can be seen in particular.

[0083] In particular, a drive tube 11, which is part of the drive device 10 and is used to open and close the protective cap 6, is visible. A corresponding piston rod 111 is arranged in the drive tube 11, at the end of which a drive piston 110 is arranged. Compressed air is supplied via a corresponding compressed fluid connection 26, either before or after the drive piston 110, depending on which compressed fluid connection 26 is supplied with compressed air, so that the protective cap 6 can be moved between an open position P1 and a closed position P2.

[0084] Furthermore, as can be seen from FIG. 3, the compressed air nozzle 80 has a predetermined inclination, so that the necessary intertwining compressed air for the intertwining passage 40 of the intertwining device 4 can be supplied in accordance with the yarn formation process without braking the running speed of the synthetic yarn.

[0085] In addition, as can be seen from FIG. 3, there is a first yarn guide comb 32.1 and a second yarn guide comb 32.2, and the yarn application plate of the yarn application device 36 is arranged in front of the interlacing device 4, i.e. the yarn is guided from the first yarn guide comb 32.1 towards the second yarn guide comb 32.2.

[0086] Furthermore, the positions of the first and second detector means 18 and 20 are shown. At the position of the corresponding detector means 18, 20, windows for LEDs can be provided, which light up when the closure cap 6 is in the associated closed position P2 or open position P1, respectively. [Explanation of symbols]

[0087] 1. Intertwining device 2 Base body 4 Interlacing Device 6 Protective cap 8 Compressed Fluid Distributor 80 Compressed Fluid Nozzle 10 Drive unit 11 Drive Tube 110 Drive piston 111 Piston rod 12 Guide 14 Retention Bed 16 Sensor Device 18 First detection means 20 Second detection means 22 Detector 24 Coupling device 26 Compressed fluid connection 28 Intake section 30 Pressure System 31 compressed fluid supply connection 32 Thread guide comb 33 Compressed fluid supply line 36 Thread attachment device 40 Intertwining Passage 60 Mounting Plate 80 compressed air nozzle 101 Nozzle unit 102 Cooling device 104 Godet 106 Pressing roller 108 Traverse device 109 Pressure Roller 110 Winding spindle revolver 112 Winding spindle 114 Winding pipe 116 bobbin packages 200 panels 220 Mounting flange 300 Winding device F Synthetic thread P1 Open position P2 Closed position

Claims

1. An apparatus (1) for entangling a plurality of filaments of a synthetic yarn (F) using a compressed fluid, the apparatus comprising: a base body (2) for holding at least one entangling device (4) for entangling the filaments of the yarn (F) using the compressed fluid; and a protective cap (6) arranged opposite the base body, wherein a compressed fluid distributor (8) for directing the compressed fluid to the entangling device (4) is arranged within the protective cap (6), the protective cap (6) being movable between a closed position in which the compressed fluid distributor is arranged adjacent to the entangling device (4) to supply the compressed fluid, and an open position in which the protective cap opens the entangling device (4). The device is characterized in that it has a drive device (10) that can move the protective cap (6) from the closed position (P2) to the open position (P1) and from the open position (P1) to the closed position (P2) relative to the interlacing device (4).

2. 2. The device according to claim 1, wherein the drive device (10) is a pneumatic drive device, a hydraulic drive device and / or an electric drive device.

3. 3. The device according to claim 1, wherein the drives (10) of the protective caps (6) are arranged asymmetrically and / or symmetrically.

4. 4. The device according to claim 1, wherein the protective cap (6) is movable between the closed position and the open position by means of symmetrically and / or asymmetrically arranged guides (12).

5. 5. The device according to claim 1, wherein a medium different from and / or the same as that used for interlacing the synthetic yarn (F) is used to drive the drive device (10).

6. 6. The device according to claim 1, wherein the drive device (10) is connected to a pneumatic pressure system (30), the operating pressure of which is less than, equal to and / or greater than the operating pressure of the interlacing device.

7. 7. The device according to claim 1, wherein the position of the protective cap (6) is detectable by means of a sensor device (16).

8. 8. The device according to claim 1, wherein a first detecting means (18) and a second detecting means (20) are arranged in the open position (P1) and the closed position (P2) of the protective cap (6), respectively.

9. 9. The device according to claim 1, wherein a detector (22) of the detection means (18, 20) is arranged on the protective cap (6) and / or on the base body (2), and the detector (22) can be connected to a control device of the winding device (300) by means of a connecting device (24).

10. 10. The device according to claim 1, wherein the supply of compressed air is carried out via the protective cap (6) of the interlacing device (4).

11. 11. The device according to claim 1, wherein the supply of compressed air for controlling the drive piston of the drive device is effected by means of a compressed fluid connection (26) in the base body (2).

12. 12. The device according to claim 1, wherein the base body is provided with a suction section (28) on the side opposite to the side on which the interlacing device is arranged.

13. 13. The device according to claim 1, wherein a yarn placement device (36) is provided in the base body (2) for supporting the placement of the synthetic yarn (F).

14. 14. The device according to claim 1, wherein the positions of the thread applying device (36) correspond to the closed and open positions of the protective cap (6).

15. 15. The device according to claim 1, wherein the thread placement device (36) is movable between a thread insertion position (T1) and a thread removal position (T2).

16. 16. A winding device (300) for winding a plurality of synthetic yarns, the winding device (300) comprising at least one winding spindle (112) for winding the synthetic yarn (F) emerging from a melting device having a nozzle unit (101), and a drawing device having at least one godet (104) for drawing out the synthetic yarn (F) emerging from the nozzle unit (101), wherein at least one device (1) for entangling a plurality of filaments of the synthetic yarn (F) as claimed in any one of claims 1 to 15 is arranged between the godet (104) and the nozzle unit (101) and / or between the godet (104) and the winding spindle.

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