WO2017001659A1

WO2017001659A1 - Auxiliary device for feeding a thread

Info

Publication number: WO2017001659A1
Application number: PCT/EP2016/065498
Authority: WO
Inventors: Klaus Schäfer
Original assignee: Oerlikon Textile Gmbh & Co. Kg
Priority date: 2015-07-02
Filing date: 2016-07-01
Publication date: 2017-01-05
Also published as: DE102015008621A1

Abstract

The invention relates to an auxiliary device for conveying and feeding a thread at the beginning of a process in a melt spinning machine or textile machine. The auxiliary device comprises a guiding means (1) and a movable support (2) that supports the guiding means (1). The support (2) can be guided along a guiding track (3). In order to minimize thread friction when conveying the moving thread, the thread guiding means (1) is formed by a driven roll (4) which is coupled to a battery-operated drive (5).

Description

Auxiliary device for applying a thread

The invention relates to an auxiliary device for transporting and applying a thread at the beginning of a process of a melt spinning machine or a textile machine according to the preamble of claim 1.

In the production of synthetic threads with melt spinning machines or in the processing of threads in textile machines, it is common practice that at the beginning of a running thread in the individual machine devices must be created or threaded. For this purpose, it is further customary that an operator leads a hand injector, which continuously sucks the running thread and leads to a waste container. In that regard, the operator is able to perform with the hand injector the thread for donning and threading. In order to minimize the manual effort when creating and threading a thread whenever possible, auxiliary devices are used for transprotecting and applying a thread. The auxiliary device for transporting and applying a thread are preferably assigned directly to the machine devices. Such an auxiliary device for transporting and applying a thread is known for example from EP 249 77 32 A.

The known auxiliary device is associated with a winding machine for winding a yarn sheet in a melt spinning process. The auxiliary device has a thread guiding means, which with a movable carrier is connected to hold the thread guide means. The thread guide means is in this case designed such that at the same time a plurality of threads are feasible. The carrier is guided in a guideway. The guideway extends parallel to an array of multiple winding locations in which the filaments are wound separately into coils. In order to distribute the threads on the individual winding points and transfer to intended yarn guide, the yarn guide means is guided with adjoining yarn sheet along the track in order to make a subsequent return movement applying and distributing the threads can. The thread guide means is designed in the form of a pin with a plurality of guide grooves on which the threads are guided. The yarn sheet is then picked up by a hand injector. This must have a significant suction force to pull the threads sliding over the rigid thread guide means. In particular, in the case of fine filament titers, the friction occurring at the thread guide means can prematurely lead to the breakage of a thread. In addition, depending on the travel paths of the carrier, very high degrees of wrap occur on the thread guide means, which still increase the friction on the thread.

It is therefore an object of the invention to provide an auxiliary device for transporting and applying at least one thread of the generic type in such a way that a gentle thread guide with relatively low thread tensions is possible.

This object is achieved in that the thread guide means is formed by a driven roller, which is coupled to a battery drive. Advantageous developments of the invention are defined by the features and feature combinations of the subclaims. The invention has the particular advantage that despite high degrees of wrap on the thread guide means no additional thread tension. On the contrary, it is possible to actively support the threadline of the thread to the hand injector. For this purpose, the thread guide means is formed by a driven roller which is coupled to a battery drive. The battery drive of the roller also promotes the degree of freedom and mobility for guiding the thread. It can thus avoid complex wiring. Thus, the auxiliary device according to the invention is also particularly suitable for transporting a thread within a machine over long distances for docking. The battery drive is designed such that the roller is driven at a predetermined constant peripheral speed.

In order to be able to provide sufficient drive energy for the roller after each process interruption and at each start of the process, it is further provided that the carrier can be guided into a parking station in which the battery drive of the roller can be coupled to a charger. Thus, the resting phase of the auxiliary device can be advantageously used to charge the battery of the battery drive. This ensures that the rollers have a constant peripheral speed during each operation. Since usually the role is only used for thread guidance during the application process, the development of the invention is particularly advantageous in which the parking station is assigned at least one switching means by which the battery drive of the role can be activated and / or deactivated. Thus, the switching on and off of the battery drive for driving the roller can be combined with the guiding movement of the carrier in the guide track. Upon reaching the parking station thus the switching means would trigger a deactivation of the battery drive.

Particularly advantageous is the integration of the switching means with the charger, so that the battery drive is disabled when docking with the charger and activated during disconnection from the charger. In order to transport a thread within the machine with the roller, at least one drive means is provided for displacing the carrier within the guide track. As drive means all the usual for performing a linear motion drives such as chains, belts, ropes or pneumatic and hydraulic drive means can be used.

In order to accommodate one or more threads on the circumference of the roll, the development of the invention is preferably carried out, in which the carrier is successively feasible on the guideway in several stations, wherein at least one of the stations forms a thread takeover station, in which a by a hand injector Guided thread on the circumference of the roll can be applied. This ensures that the thread is applied to the circumference of the roller driven at a circumferential speed. For safe guidance or for separating a plurality of threads is further provided that the roller has one or more circumferential guide grooves on the circumference. The guide grooves are preferably formed with a short distance next to each other on the circumference of the roller.

In order to separate the auxiliary device, the functions between the pure transport of the thread and the transfer of the thread in the machine device, the development of the invention is particularly advantageous in which the guideway comprises a plurality of interconnected guide sections, wherein one of the guide sections performs an extension movement of the carrier and another guide section leads a return movement of the carrier. Thus, the actual transport route for creating a group of yarns can first be used on the extension path. The distribution and the application of the threads then takes place during a return movement of the carrier in a further guide section of the guideway. This development is particularly suitable for separating the threads in melt spinning machines. In that regard, a winding machine according to the invention with several winding stations is particularly suitable to supply a fed via a godet yarn sheet the individual winding points.

The auxiliary device according to the invention for transporting a thread is explained in more detail below with reference to several embodiments with reference to the accompanying figures.

They show: Fig. 1 shows schematically a side view of a first embodiment of the auxiliary device

Fig. 2 shows schematically a plan view of the embodiment of Fig. 1 Fig. 3 shows schematically a cross-sectional view of the embodiment of

Fig. 1

Fig. 4 shows schematically a partial view of another embodiment of the auxiliary device

Fig. 5 shows schematically a partial view of another embodiment of the auxiliary device

Fig. 6 shows schematically a winding machine according to the invention with a further embodiment of the auxiliary device

1, 2 and 3, a first embodiment of an auxiliary device for transporting and applying a thread is shown schematically in several views and different operating situations. FIG. 1 shows a side view of the exemplary embodiment, FIG. 2 shows a top view and FIG. 3 shows a cross-sectional view. Unless expressly made to any of the figures, the following description applies to all figures.

The exemplary embodiment of the auxiliary device has a guide means 1, which is held on a support 2. The guide means is formed of a roller 4 and a battery drive 5. The battery drive 5 and the roller 4 are coupled to each other via a drive shaft 6. The battery drive 5 has a motor 5.1 and an accumulator 5.2. In this embodiment, the battery drive 5 and the roller 4 cantilevered by the carrier 2. For this purpose, the carrier 2 has a holding end 2.1 and a leading end 2.2. The leading end 2.2 is arranged in the guide track 3, which is formed in a guide rail 8. Within the guideway 3, a drive means 9 is coupled to the 5 guide end 2.2 to guide the carrier 2 along the guide rail 8 linear. In this embodiment, the drive means 9 is formed by a cable 9.1 and a 9.1 coupled to the cable motor 9.2. By activating the motor 9.2, the carrier 2 can be guided back and forth along the guide rail 8.

10

In Fig. 1, the carrier 2 is held with the battery drive 5 and the roller 4 in a lower parking station. In the parking station, the battery drive 5 is coupled to a charger 7. For this purpose, the charger 7 has, for example, a charge generator 10 which can be coupled to the battery 5.2 of the battery drive 5 via a plug connection 15.

On the underside of the battery drive 5, which faces the charger 7 in this case, a switching means 1 1 is arranged in the form of a contact switch. The switching means 1 1 acts between the motor 5.1 and the accumulator 5.2 to interrupt a power supply. In the situation illustrated in FIG. 1, the switching means 9 is activated and disconnects the accumulator 5.2 from the motor 5, so that the drive shaft 6 is stationary with the roller 4.

In the operating situation illustrated in FIG. 1, the battery drive 5 is charged with energy. The roller 4 is not driven. In order to take over a thread for transport within a melt spinning machine or a textile machine, the drive means 9 is activated on the guide rail 8, so that the carrier 2 is first guided out of the parking station in a transfer station. In Fig. 2, the situation is shown, in which the carrier 2 is held with the roller 4 and the battery drive 5 in a transfer position. In this situation, the roller 4 is driven by the battery drive 5 at a predetermined peripheral speed. By decoupling the battery drive 5 from the charger 7, the switching means 1 1 is deactivated, so that the accumulator 5.2 and the motor 5 are connected together within the battery drive 5 and the motor 5.1, the drive shaft 6 and thus the roller 4 drives. In this situation, the auxiliary device is ready to take over a thread. In this case, the thread 13 can be applied by means of a hand injector 14 to the circumference of the roller 4. However, it is also possible that the driven roller 4 moves into the transfer station directly into an already stretched yarn path of the thread 13 and thus automatically receives the thread on the circumference. For further transport and for applying the thread to a machine device not shown here, the drive means 9 is controlled on the guide rail 8 such that the carrier 2 with the roller 4 occupies a predetermined end position. In this case, a decrease in the thread can take place through interaction with other facilities. After transfer of the thread, the roller 4 is guided over the carrier 2 back into the parking station. 4, a further embodiment of the auxiliary device according to the invention is shown schematically in a cross-sectional view. The embodiment of FIG. 4 is substantially identical to the embodiment of FIGS. 1 to 3, so that only the differences will be explained at this point.

In the embodiment of the auxiliary device according to the invention shown in Fig. 4, the roller 4 and the battery drive 5 is arranged on both sides of a guide rail 8. The guide rail 8 has a guideway 3, in which the carrier 2 is guided. The carrier 2 is designed as a bearing carriage 2.3, in which a drive shaft 9 is rotatably mounted. The bearing carriage 2.3 is coupled via ropes 9.1 with a drive means 9, through which the bearing carriage 2.3 in the guideway 3 can be guided.

The drive shaft 6 penetrates the bearing carriage 2.3 on both sides. At an outstanding end of the drive shaft 6, the roller 4 is arranged rotatably. The roller 4 has a guide groove 12 on the circumference. The guide groove 12 serves to guide a thread.

At the opposite end of the drive shaft 9 on the opposite side of the guide rail 8, the battery drive 5 is arranged. The battery drive 5 is identical to the aforementioned embodiment and drives the drive shaft 6 at.

The embodiment shown in Fig. 4 is thus particularly suitable for guiding a single thread within a textile machine. The function is identical to that shown in FIGS. 1 to 3 Embodiment of the auxiliary device, so that at this point no further explanation and reference is made to the preceding description. In Fig. 5, another embodiment of the auxiliary device is shown, as it could be used for example to guide a group of threads.

In the embodiment shown in Fig. 5, only the battery drive and the roller is shown. The other components not shown here are identical to the embodiment of FIGS. 1 and 3, so that only the differences will be explained at this point.

In the embodiment shown in FIG. 5, the motor 5.1 of the battery drive 5 is integrated directly within the roller 4 and designed as a so-called internal rotor. The roller 4 is designed as a hollow cylinder and coupled to a rotor of the motor 5.1, not shown here. The accumulator 5.2 of the battery drive 5 is arranged laterally next to the roller 4 and coupled via a fixed axis 5.3 with the motor 5.1. The power supply takes place here via the axis 5.3 between the accumulator 5.2 and the engine 5.1. The roller 4 has at the periphery a plurality of guide grooves 12 which are formed parallel to each other circumferentially on the shell of the roller 4. In this embodiment, the roller 4 has a total of six guide grooves 12, so that the roller at its periphery six threads can lead separately. In that regard, the embodiment of FIG. 5 is particularly suitable for guiding a group of threads.

Such auxiliary devices for the transport and application of a group of threads are particularly suitable for being integrated directly in a winding machine for thread guidance. Such winding machines are therefore characterized by a very thread-gentle thread guide during the thread application at the beginning of the process. An embodiment of such a winding machine is shown schematically in Figure 6.

In Fig. 6, the winding machine is shown in a side view. The winding machine has a plurality of operating spindles 17. 1 and 17. 2, which are held cantilevered on a spool turret 18. Through the winding turret 18, the winding spindles 17.1 and 17.2 can alternately lead into a winding area and a change area. For this purpose, the winding turret 18 is rotatably mounted in a machine frame 16. In the winding area, the winding spindles 17.1 and 17.2 cooperate with a pressure roller 20. Along the pressure roller 20 and the winding spindle 17.1 and 17.2 a plurality of winding points 21 are formed, wherein at each winding point 21 to the winding spindles 17.1 and 17.2 in each case a sleeve 19 is held. The winding stations 21 are constructed identically and each have a guide roller 22 and a traversing unit 23 for the thread guide.

Above the winding stations 21, a godet 24 is provided on a front end of the dishwasher. Via the godet 24 a yarn sheet 25 is fed to the winding stations 21. At a process start or after a process interruption to distribute the threads of the yarn sheet 25 in the winding points 21 and apply, an auxiliary device 26 is provided between the godet 24 and the winding points 21. The auxiliary device 26 has a roller 4, which according to the embodiment of FIGS. 1 and 3 or according to the embodiment of FIG. 5 could be executed. The roller 4 is coupled to a battery drive, not shown here, and a carrier which is guided on a guide rail 8. The guide rail 8 extends parallel to the winding points 21, wherein the guide rail 8 has a guide track 3 with a first guide section 3.1 and a second guide section 3.2. The guide sections 3.1 and 3.2 are connected to one another at their ends, so that the roller 4 can be guided back and forth via the guide sections 3.1 and 3.2. The end of the guide section 3.2 at the front end of the winding machine, a charger 7 is arranged. The positioner 7 cooperates with the battery drive of the roller 4, not shown here, for charging a rechargeable battery.

In the operating situation shown in Fig. 6, the yarn sheet 25 is continuously received via a hand injector 14 and guided to a waste container. The threads of the yarn sheet 25 are withdrawn continuously from a melt spinning device. The hand injector 14 can be guided both manually by an operator or automatically by a robot. The threads of the yarn sheet are applied to the circumference of the roller 4, as for example, to each of the threads has a guide groove. The roller 4 is previously guided in the guide section 3.1 of the guide track 3 in a transfer position in which the roller 4 is driven continuously. After taking over the yarn sheet 25 the carrier of the roller 4 is guided along the guide rail 8 by a drive means (not further illustrated here), wherein first all threads are guided parallel to one another in the guide section 3.1 up to the end thereof. The extension movement of the roller 4 on the guide section 3.1 initially serves only to transport the yarn sheet 25 to a contact position at the opposite end of the winding stations 21. Now, in a reversing movement, each of the threads is transferred to one of the deflection rollers 22 of the winding stations 21. In this case, the guide section 3.2 preferably has an offset on the guide rail 8. Alternatively, however, it is also possible to provide further auxiliary devices for stripping the threads from the roll 4.

At the end of the application process, the roller 4 is guided into the parking station, in which the charger 7 is coupled to the battery drive of the roller 4 for charging the accumulator. In this situation, the drive of the roller 4 is turned off.

Claims

claims

An auxiliary device for transporting and applying a running thread at a process start of a melt spinning machine or a textile machine with a thread guide means (1) and with a movable carrier (2) for holding the thread guide means (1), wherein the carrier (2) along a guide track ( 3) is feasible, characterized in that the thread guiding means (1) by a driven roller (4) is formed, which is coupled to a battery drive (5).

2. Auxiliary device according to claim 1, characterized in that the carrier (2) can be guided in a parking station, in which the battery drive (5) of the roller (4) with a charger (7) can be coupled.

3. Auxiliary device according to claim 2, characterized in that the parking station is associated with at least one switching means (1 1), by which the battery drive (5) of the roller (4) can be activated and / or deactivated.

4. Auxiliary device according to claim 3, characterized in that the switching means (1 1) is integrated with the charger (7) such that the battery drive (5) when coupling with the charger (7) is deactivated and disconnected from the charger (7 ) is activated.

5. Auxiliary device according to one of claims 1 to 4, characterized in that at least one drive means (9) for Moving the carrier (2) within the guideway (3) is provided.

6. Auxiliary device according to claim 5, characterized in that the carrier (2) on the guide track (3) can be guided successively in several stations, wherein at least one of the stations a

Thread transfer station forms, in which a guided by a hand injector (14) thread (13) on the circumference of the roller (4) can be applied.

7. Auxiliary device according to one of claims 1 to 6, characterized in that the roller (4) on the circumference at least one circumferential guide groove (12) for guiding the thread (13).

8. Auxiliary device according to one of claims 1 to 6, characterized in that the roller (4) for guiding a yarn sheet (25) has a plurality of short distance adjacent to each other encircling guide grooves (12).

9. Auxiliary device according to one of claims 1 to 8, characterized in that the guide track (3) has a plurality of interconnected guide sections (3.1, 3.2), wherein one of the guide sections (3.1, 3.2) an extension movement of the carrier (2) leads and another guide section (3.1, 3.2) one

Return movement of the carrier (2) leads.

10. Winding machine with a plurality of winding points (21) for winding a plurality of threads (25) in a melt spinning process, characterized by an auxiliary device (26) according to one of claims 1 to 9.