Spool head for winding synthetic threads

Abstract

The present disclosure relates to a winding head (1) for winding synthetic threads (2) produced by means of a spinning device, wherein the winding head (1) has in a first end region (1.1) a drafting unit (3) with at least one galette (4), wherein the threads (2) can be wound onto spools (6) rotatable by means of a winding spindle (5) of the winding head (1), wherein a suction gun (7) is arranged and / or can be arranged in a second end region (1.2) of the winding head (1) in a transfer position (8), wherein a cutting device (9) is located between the drafting unit (3) and an opening (10) of the suction gun (7) arranged in the transfer position (8) in a cutting position (11) for cutting the synthetic threads (2) by means of at least one cutting edge (9.1, 9.1).2) the cutting device (9) is arranged and / or can be arranged, wherein the cutting device (9) is movable between the cutting position (11) and a parking position (12) to release the mouth (10) of the suction gun (7) arranged in the transfer position (8).

Description

[0001] The present invention relates to a spooling head for winding synthetic threads.

[0002] Such synthetic threads are typically produced using a spinning device. Known spooling heads, which advantageously allow for a small distance between the spinning device and the spooling head, have a drafting unit with at least one galette in a first end section. The threads can be wound onto spools that are rotatable by means of a spooling spindle of the spooling head. The threads are usually fed onto the spooling head partly by means of a suction gun operated by a user. In order to avoid having to switch off the spinning device if problems occur during operation of the spooling head, yarn cutting devices are known which are arranged upstream of the spooling head and thus also upstream of the at least one galette. "Upstream" here means upstream in the thread path, i.e., during operation, the threads are initially moved with or adjacent to upstream elements.After the threads are cut using the yarn cutting device, the threads are sucked away with an aspirator, so that the spinning device can continue to be operated without any changes.

[0003] EP2463221B1 describes such a yarn cutting device, configured to cut multiple yarns / synthetic threads. The yarn cutting device includes a yarn web guide configured to guide the multiple yarns. The yarn cutting device includes a yarn displacement guide positioned further upstream than the yarn web guide such that it displaces the multiple yarns guided by the yarn web guide in one direction. The yarn cutting device includes an aspirator positioned further upstream than the yarn displacement guide such that it draws in the multiple yarns displaced by the yarn displacement guide. The yarn cutting device includes a cutting device positioned between the yarn displacement guide and the aspirator such that it cuts the multiple yarns drawn in by the aspirator.The yarn web guide has several guide grooves arranged parallel to each other in the direction in which the multiple yarns are aligned. Each guide groove is designed to guide a specific portion of the multiple yarns. The yarn displacement guide, the aspirator, and the cutting device are arranged at one end in the direction in which the yarns are aligned, which is also the direction in which the guide grooves of the yarn web guide are arranged. The cutting device is movable back and forth in the direction in which the multiple yarns are aligned by means of a displacement mechanism to cut the yarns. Such a yarn cutting device is also called a shredder. A cutting edge of the cutting device is directed away from the opening of the aspirator.The opening width of the mouth is essentially aligned parallel to the yarns guided past the mouth during operation, so that the opening width is essentially vertically aligned.

[0004] To restart the winding head after the yarns, also known as synthetic threads, have been cut by the cutting device, the threads must be transferred from the stationary aspirator to a suction gun. The suction gun then allows the threads to be fed back onto the winding head, restarting the operation. Transferring the threads to the suction gun requires considerable skill from the operator, who must simultaneously cut the threads, for example, with scissors, while guiding the gun. This process carries a high risk of error. Furthermore, the aspirator may be positioned at a considerable height, making it difficult or impossible for the operator to reach from the ground.

[0005] The present invention aims to provide a spooling head for winding synthetic threads that reduces or eliminates the problems of the prior art. In particular, it aims to simplify the transfer of threads to a movable suction gun.

[0006] This problem is solved by a spooling head for winding synthetic threads according to claim 1.

[0007] Further advantageous embodiments are the subject of the dependent claims.

[0008] More precisely, the problem is solved by a spooling head for winding synthetic threads produced by means of a spinning device, wherein the spooling head has a drafting unit with at least one galette in a first end region, wherein the threads can be wound onto spools rotatable by means of a spooling spindle of the spooling head, wherein a suction gun is arranged and / or can be arranged in a transfer position in a second end region of the spooling head, wherein a cutting device is arranged and / or can be arranged between the drafting unit and an opening of the suction gun arranged in the transfer position in a cutting position for cutting the synthetic threads by means of at least one cutting edge of the cutting device, wherein the cutting device is movable between the cutting position and a parking position for releasing the opening of the suction gun arranged in the transfer position.

[0009] The cutting device and the suction gun, positioned in the transfer position, are easily accessible to the operator. Although the cutting device is located between the drafting unit and the nozzle of the suction gun in its transfer position, the threads can be reliably picked up by the suction gun and drawn into the cutting device after being cut. The threads are guided from an aspirator, preferably a reamer or similar yarn holding device, located in the galette area, to the cutting device in a thread loop using a yarn guide hook. After the threads are cut, the threads produced by the spinning device can be drawn into the suction gun. The threads can then be re-inserted onto the winding head using the suction gun. The cutting device and the suction gun are preferably moved manually by the operator.However, it would also be conceivable to move the cutting device automatically using an actuator. Similarly, it is conceivable to move a suction gun with the aid of an actuator. By positioning the cutting device in the parked position, an alternative feeding of threads to the nozzle without using the cutting device is possible, or at least facilitated. Such an alternative feeding could, for example, be achieved by means of a feeding device arranged between the spinning device and the suction gun in the transfer position, e.g., with an air channel for thread guidance. Such a feeding device serves in particular to initially place the threads on the spool head after the spinning device is switched on, whereas the cutting device preferably remains in use at or after the initial winding.to end an operational interruption, which in particular involves the activation of a chipper, whereby the spinning device continues to operate unchanged during such an operational interruption.

[0010] Preferably, the cutting edge is positioned towards the mouth in the cutting position and away from the mouth in the parked position. In the cutting position, the cutting edge faces the mouth. This ensures, in particular, the reliable cutting of threads guided in a thread loop, with a force acting from the threads towards the cutting edge. The cutting edge is formed, for example, on a preferably replaceable blade of the cutting device.

[0011] According to an advantageous embodiment of the spool head, the cutting edge is arranged at a specific distance perpendicular and / or parallel to the opening cross-section of the nozzle when the cutting device is in the cutting position. The distance is selected such that the threads, after being cut, can be reliably picked up by the suction gun and extracted accordingly. For this purpose, the distance of the cutting device to the nozzle of the suction gun (arranged in the transfer position) and the suction flow of the suction gun are coordinated accordingly. Preferably, the cutting edge is arranged at a specific distance from the opening cross-section of the nozzle in the direction of the normal to the opening cross-section when the cutting device is in the cutting position.The cutting edge is preferably arranged at a certain distance from a plane running parallel to the normal of the opening cross-section of the mouth and tangential to the mouth edge when the cutting device is arranged in the cutting position, wherein this plane is then preferably arranged parallel to the cutting edge, and wherein the cutting edge is then preferably arranged on the side of this plane facing away from the mouth.

[0012] According to a further preferred embodiment of the spool head, the cutting device is pivotable between the cutting position and the parking position. Such pivoting is easily achieved through design. Furthermore, the pivoting can be carried out quickly and safely by an operator or a suitable actuator.

[0013] It can be advantageous if the cutting device is detachably connectable to and / or coupled to the winding head. This allows the cutting device to be advantageously used on several identical or at least similarly designed winding heads. An operator then carries such a cutting device and, to re-attach the threads to the winding head, particularly after an interruption of operation, e.g., due to problems with the winding head, can connect the cutting device to the winding head and use it for easy thread attachment.

[0014] Advantageously, the cutting device has a first cutting edge and a second cutting edge that intersect. The two cutting edges are preferably each formed on a separate blade of the cutting device. Feeding the threads to at least one of the cutting edges is thus simplified, making the cutting of the threads easier and more reliable. This allows even inexperienced operators to perform the process safely.

[0015] Preferably, the cutting device has a guide element with two guide areas. The two guide areas are arranged on the side of the cutting edge facing away from the nozzle when the cutting device is in the cutting position and the suction gun is in the transfer position. The two guide areas are arranged, at least partially, on opposite sides of a plane in which the cutting edge lies. This plane in which the cutting edge lies is preferably oriented substantially vertically. The two guide areas further simplify the feeding of the threads to the cutting edge, particularly in forming a thread loop. Such a thread loop creates a section of threads moving towards the suction gun and a section of threads moving away from the suction gun.The area of ​​the threads moving towards the suction gun can be guided by one of the guide areas, and the area of ​​the threads moving away from the suction gun can be guided by the other of the guide areas.

[0016] In a preferred embodiment of the spooling head, the two guide areas merge into one another, forming a tip of the guide element. This makes it particularly easy to separate the section of thread moving towards the suction gun and the section moving away from the suction gun. Overall, such a tip further simplifies the feeding of the threads to the cutting edge.

[0017] The guide element advantageously features a guide groove for bundling the threads. A plane is present that is penetrated by the guide groove, the cutting edge, and the nozzle when the cutting device is in the cutting position and the suction gun is in the transfer position. During cutting, the threads are then securely guided in the guide groove. The cutting process is thus further simplified and can be carried out more safely, even by inexperienced operators.

[0018] Preferably, the opening of the suction gun, positioned in the transfer position, is oriented essentially horizontally. The opening of the suction gun, when positioned in the transfer position, is then preferably oriented upwards. The threads can then advantageously be fed to the suction gun, when positioned in the transfer position, from above, e.g., from the direction of the shredder and / or the spinning device. The cutting edge is then advantageously arranged at a certain distance from the opening in the vertical direction when the cutting device is in the cutting position and the suction gun is in the transfer position. Furthermore, the cutting edge is then preferably arranged at a certain distance from the opening in the horizontal direction when the cutting device is in the cutting position and the suction gun is in the transfer position.

[0019] Such spooling heads are used in particular in conjunction with spinning devices for the production of partially or fully drawn synthetic threads for textile or technical applications. A melt spinning process is especially feasible using the spooling head and the spinning device.

[0020] Preferred embodiments are described in more detail below with reference to the accompanying figures. Fig. Figure 1 schematically shows an embodiment of the spool head with a cutting device in a cutting position in a side view. Fig. Figure 2 schematically shows the cutting device in the cutting position on the spool head shown here in part, in contrast to Fig. 1 enlarged side view. Fig. Figure 3 schematically shows a guide element of the cutting device, the suction gun and the cutting edge. Fig. 2 in a top view. Fig. Figure 4 schematically shows the cutting device in a parked position on the spool head shown here in part, in an analogous manner to Fig. 2 enlarged side views. Fig. Figure 5 schematically shows part of the spool head in an analogous manner to Fig. 2 enlarged side views, but without the cutting device.

[0021] Fig. Figure 1 shows a winding head 1 for winding synthetic threads 2 produced by a spinning device. The winding head 1 has a drafting unit 3 with at least one galette 4 in a first end region 1.1. The threads 2 can be wound onto spools 6 rotatable by means of a winding spindle 5 of the winding head 1. A suction gun 7 is arranged and / or can be arranged in a transfer position 8 in a second end region 1.2 of the winding head 1, wherein the suction gun 7 is arranged according to Fig. 1 to Fig. 5 is shown in the transfer position 8. A cutting device 9 is arranged and / or can be arranged between the drawing unit 3 and an opening 10 of the suction gun 7 arranged in the transfer position 8 in a cutting position 11 for cutting the synthetic threads 2 by means of at least one cutting edge 9.1, 9.2 of the cutting device 9, wherein the cutting device 9 is arranged according to Fig. 1, Fig. 2 and Fig. 3 is shown in cutting position 11. Fig. Figure 3 shows only the cutting edge 9.1, 9.2 of the cutting device 9. The cutting device 9 is located between the cutting position 11 and a Fig. The parking position 12 shown in section 4 can be moved to release the mouth 10 of the suction gun 7 arranged in the transfer position 8.

[0022] The suction gun 7 is held in the transfer position 8 automatically, in particular by gravity. The second end area 1.2 is oriented towards an operating area or a control aisle of the spool head 1, so that an operator can easily position the suction gun 7 in the transfer position 8.

[0023] The cutting edge 9.1, 9.2 is positioned in cutting position 11 towards the mouth 10. The cutting edge 9.1, 9.2 is positioned away from the mouth 10 in parking position 12.

[0024] The cutting edge 9.1, 9.2 is arranged at a specific distance a1, a2 perpendicular and / or parallel to the opening cross-section 13 of the mouth 10 of the suction gun 7, which is then arranged in the transfer position 8, when the cutting device 9 is in the cutting position 11. The perpendicular, first distance a1 is determined in particular by Fig. 2 is evident. The parallel, second distance a2 is particularly evident from Fig. 3. The perpendicular, first distance a1 is formed primarily in the vertical direction. The parallel, second distance a2 is formed primarily in the horizontal direction.

[0025] The cutting device 9 is pivotable between the cutting position 11 and the parking position 12. For this purpose, the cutting device 9 is pivotably mounted on the spooling head 1, in particular on a machine frame of the spooling head 1. For example, corresponding stops are provided to hold the cutting device 9 in either the cutting position 11 or the parking position 12. Alternatively, it would also be conceivable that the cutting device is translationally movable between the cutting position and the parking position.

[0026] The cutting device 9 can be detachably coupled to and / or coupled with the spooling head 1. For example, it could be, as Fig. Figure 5 shows that the cutting device 9 is not coupled to the spool head 1. In order to cut the threads 2 adjacent to the suction gun 7 located in the transfer position 8, the cutting device 9 must be coupled to the spool head 1 or must first be coupled to the spool head 1. A coupling device such as a wing nut can be used for this purpose. Alternatively, corresponding coupling areas could be formed on the spool head into which the cutting device can be inserted and by means of which the cutting device can be supported after insertion.

[0027] The cutting device 9 has, as shown in particular in Fig. 2 and Fig. Figure 4 shows a first cutting edge 9.1 and a second cutting edge 9.2 that intersect. The two cutting edges 9.1, 9.2 are each formed on replaceable blades. Replacement takes place when the cutting edges 9.1, 9.2 have become dull. Such blades are preferably oriented substantially vertically.

[0028] The cutting device 9 has a guide element 14 with two guide areas 14.1, 14.2. The two guide areas 14.1, 14.2 are arranged on the side of the cutting edge 9.1, 9.2 facing away from the opening 10 when the cutting device 9 is in the cutting position 11 and the suction gun 7 is in the transfer position 8, wherein the two guide areas 14.1, 14.2 are arranged at least partially on opposite sides of a plane E9 in which the cutting edge 9.1, 9.2 lies. The plane E9 is also parallel to an axis of the suction gun 7, which is arranged in the transfer position 8 and passes through the center point of the opening 10. The two guide areas 14.1, 14.2 are each straight.

[0029] The two guide areas 14.1 and 14.2 merge into one another, forming a point 14.3 of the guide element 14. An angle is thus formed between the two guide areas 14.1 and 14.2. In particular, a thread loop can be spread open by means of the two guide areas 14.1 and 14.2.

[0030] The guide element 14 has a guide groove 14.4 for bundling the threads 2. A plane E14 is present, which is penetrated by the guide groove 14.4, the cutting edge 9.1, 9.2, and the opening 10 when the cutting device 9 is in the cutting position 11 and the suction gun 7 is in the transfer position 8. The guide groove 14.4 is located adjacent to the first guide area 14.1. The threads 2 can be fed to the guide groove 14.4 via the first guide area 14.1.

[0031] The mouth 10 of the suction gun 7, positioned in the transfer position 8, is essentially horizontally oriented.

[0032] The spooling head 1 has a suction gun receptacle 15 in which the suction gun 7 is held in the transfer position 8. The suction gun receptacle 15 and the cutting device 9 can be arranged on the common machine frame of the spooling head 1, connected to the machine frame, and / or at least partially integrated with the machine frame. The suction gun 7, held in the suction gun receptacle 15, can be moved back and forth between the transfer position 8 and a waiting position by means of the suction gun receptacle 15, in particular by means of an actuator coupled to the suction gun receptacle 15, and in particular pivoted.

[0033] The winding head 1 also includes a chopper 16. The chopper 16 allows the threads 2 to be cut during operation of the winding head 1, particularly in the event of problems with downstream elements of the winding head 1, such as the galettes 4 or the spool spindle 5. The cut threads can then be extracted by an aspirator located in the area of ​​the chopper 16. After the problems have been resolved, the threads 2 can be retrieved from the aspirator and reattached to the winding head 1, specifically the galettes 4 and the spool spindle 5. In the meantime, extrusion of the threads 2 by the spinning device does not need to be stopped, which would result in a longer restart process. Fig.Figure 1 shows two reels 4, between which a movable feed roller 17 and a swirling device 18 are arranged, the threads 2 being applied to the swirling device 18 by moving the feed roller 17. Following the last reel 4, each thread 2 is guided by a head thread guide 19 during its changing motion by means of a changing device 20, forming a changing triangle in each case. The threads 2 can be wound onto the sleeves 6, which are rotatable by means of the winding spindle 5, to form spools 23. A pressure roller 21 can be placed on the spools 23 during the winding of the threads 2. The winding head 1 has two winding spindles 5, which are rotatable by means of a turret 22 of the winding head 1, so that only one of the two winding spindles 5 is used for winding the threads 2 at any given time.

[0034] The following describes the process of applying the threads 2. This assumes an initial situation in which the threads 2 are conveyed by the aspirator of the shredder 16. The threads could also be conveyed or held by a different type of device in the area of ​​the drawing unit. If the suction gun 7 is not yet in the transfer position 8, it is positioned there. To facilitate positioning the suction gun 7 in the transfer position 8, the cutting device 9 is preferably in the park position 12. If the cutting device 9 is not yet in the cutting position 11, it is positioned there, in particular by pivoting it from the park position 12.

[0035] The threads 2 are now guided from the aspirator towards the suction gun 7 by means of a tool, in particular a yarn guide hook, forming a thread loop. This thread loop creates a section of the threads 2 moving towards the suction gun 7 and a section moving away from it. The section of the threads 2 moving towards the suction gun 7 is formed in particular between the spinning device and the tool, in particular the yarn guide hook. The section of the threads 2 moving away from the suction gun 7 is formed in particular between the tool, in particular the yarn guide hook, and the aspirator.

[0036] The portion of the threads 2 moving towards the suction gun 7 and the portion moving away from the suction gun 7 are simultaneously guided towards the cutting edge 9.1, 9.2 by one of the guide areas 14.1, 14.2, respectively. The portion of the threads 2 moving towards or away from the suction gun 7 is then guided in the guide groove 14.4, and during this process, contact is made between the threads 2 and the cutting edge 9.1, 9.2, thus cutting the threads 2. After the threads 2 have been cut, the threads 2 emerging from the spinning device are drawn in by the suction gun 7. The contact between the tool, in particular the yarn guide hook, is preferably broken after the threads 2 are guided in or adjacent to the guide groove 14.4, so that after breaking the contact the threads 2 are then drawn to the cutting edge 9.1, 9 by means of the aspirator.2 and in particular into the guide groove 14.4. Once all the threads 2 have been cut and thus sucked away by means of the suction gun 7, the threads 2 can be attached to the winding head 1, in particular the bobbins 4, the winding spindle 5, the spools 6, etc. The described movement of the yarn guide hook is carried out either manually by an operator or with an automatic device.

[0037] The setup process described above is simple and quick, and can be carried out even by an inexperienced operator. Reference symbol list 1 spool head 1.1 first end area 1.2 second end area 2 threads 3. Drawing machine 4 galettes 5 spool spindle 6 sleeves 7 Suction gun 8. Handover position 9 Cutting device 9.1 First cutting edge of the cutting device 9 9.2 Second cutting edge of the cutting device 9 10 Mouth 11 Cutting position 12 Parking positions 13 Opening cross-section 14 Guide element 14.1 First management area 14.2 second management area 14.3 Tip of the guide element 14 14.4 Guide groove of the guide element 14 15 Suction gun mount 16 Raffhacker 17 Investor role 18 turbulence device 19 Head thread guide 20 Changing device 21 Pressure roller 22 revolvers 23 coils a1 first, vertical distance a2 second, parallel distance E9 plane in which the cutting edge 9.1, 9.2 lies E14 plane penetrated by the guide groove 14.4, the cutting edge 9.1, 9.2 and the opening 10 QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] EP 2463221B1

[0003]

Claims

[1] Winding head (1) for winding synthetic threads (2) produced by means of a spinning device, wherein the winding head (1) has a drafting device (3) with at least one godet (4) in a first end region (1.1), wherein the threads (2) can be wound onto tubes (6) which are rotatable by means of a winding spindle (5) of the winding head (1), wherein a suction gun (7) is and / or can be arranged in a transfer position (8) in a second end region (1.2) of the winding head (1), wherein a cutting device (9) is arranged between the drafting device (3) and an opening (10) of the suction gun (7) arranged in the transfer position (8) in a cutting position (11) for cutting the synthetic threads (2) by means of at least one cutting edge (9.1, 9.2) the cutting device (9) is arranged and / or can be arranged, wherein the cutting device (9) is movable between the cutting position (11) and a parking position (12) for releasing the mouth (10) of the suction gun (7) arranged in the transfer position (8). [2] Winding head (1) according to claim 1, characterized by that the cutting edge (9.1, 9.2) in the cutting position (11) is positioned towards the mouth (10) and the cutting edge (9.1, 9.2) in the parking position (12) is positioned away from the mouth (10). [3] Winding head (1) according to at least one of the preceding claims 1 or 2, characterized by that the cutting edge (9.1, 9.2) is arranged at a certain distance (a1, a2) perpendicular and / or parallel to the opening cross-section (13) of the mouth (10) when the cutting device (9) is arranged in the cutting position (11). [4] Winding head (1) according to at least one of the preceding claims, characterized bythat the cutting device (9) can be pivoted between the cutting position (11) and the parking position (12). [5] Winding head (1) according to at least one of the preceding claims, characterized by that the cutting device (9) is detachably coupled and / or coupled to the winding head (1). [6] Winding head (1) according to at least one of the preceding claims, characterized by that the cutting device (9) has a first cutting edge (9.1) and a second cutting edge (9.2) which intersect. [7] Winding head (1) according to at least one of the preceding claims, characterized byin that the cutting device (9) has a guide element (14) with two guide regions (14.1, 14.2), wherein the two guide regions (14.1, 14.2) are arranged on the side of the cutting edge (9.1, 9.2) facing away from the mouth (10) when the cutting device (9) is in the cutting position (11) and the suction gun (7) is in the transfer position (8), wherein the two guide regions (14.1, 14.2) are arranged at least partly on opposite sides of a plane (E9) in which the cutting edge (9.1, 9.2) lies. [8] Winding head (1) according to the preceding claim, characterized by that the two guide areas (14.1, 14.2) merge into one another to form a tip (14.3) of the guide element (14). [9] Winding head (1) according to at least one of claims 7 or 8, characterized byin that the guide element (14) has a guide groove (14.4) for bundling the threads (2), wherein a plane (E14) is present which is penetrated by the guide groove (14.4), the cutting edge (9.1, 9.2) and the mouth (10) when the cutting device (9) is arranged in the cutting position (11) and the suction gun (7) is arranged in the transfer position (8). [10] Winding head (1) according to at least one of the preceding claims, characterized by that the mouth (10) of the suction gun (7) positioned in the transfer position (8) is aligned substantially horizontally.

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