EP3990377A1

EP3990377A1 - Texturing machine

Info

Publication number: EP3990377A1
Application number: EP20735119.8A
Authority: EP
Inventors: Stefan Conrad; Philip JUNGBECKER
Original assignee: Oerlikon Textile GmbH and Co KG
Current assignee: Oerlikon Textile GmbH and Co KG
Priority date: 2019-06-29
Filing date: 2020-06-24
Publication date: 2022-05-04
Anticipated expiration: 2040-06-24
Also published as: DE102019004569A1; EP3990377B1; CN114007968A; WO2021001223A1

Abstract

The invention relates to a texturing machine for drawing and crimping synthetic threads, comprising a plurality of processing points. Each of the processing points has multiple delivery mechanisms (3, 7, 19), multiple treatment devices (4, 5, 6, 10) and a winding device (21) for winding a reel. A pneumatic auxiliary device (11) having multiple guide tubes (12.1, 12.2) and multiple injectors (13.1, 13.2) is provided for threading a thread at the beginning of the process or in a process interruption, wherein the auxiliary device (11) cooperates with a suction device (22) associated with the winding device (1) via a blowing end (15.1, 15.2) of one of the guide tubes (12.1, 12.2). In order to create the shortest possible transfer sections, the suction device (22) comprises a swivellable suction nozzle (22.1), which can be positioned at a short distance opposite the blowing end (15.1, 15.2) of the guide tube (12.1, 12.2) for receiving the thread.

Description

Texturing machine

The invention relates to a texturing machine for drawing and crimping synthetic threads according to the preamble of claim 1.

A generic texturing machine is known from WO 2004/018749 A1.

The known texturing machine has a plurality of processing points in order to stretch and crimp a thread in each of the processing points. For this purpose, a plurality of delivery mechanisms, a plurality of treatment devices and a winding device for winding the crimped and drawn thread into a bobbin are arranged in each of the processing stations. For this purpose, the delivery units and the treatment facilities are usually arranged within a machine frame to form a thread run. In order to facilitate the threading of the thread in one of the processing points at the start of the process, the known texturing machine has a pneumatic auxiliary device with several guide tubes and several injectors. In this way, the thread can be fed pneumatically to the winding device at the processing point. The winding device has a suction device through which the thread is received in the winding device and guided for threading.

In the known texturing machine this sometimes larger Fadenab distances between the blow openings and suction openings of the auxiliary device for transferring the thread must be bridged. Such distances, however, require an exact alignment of the opposing blow openings and suction openings of the pneumatic auxiliary device as well as the suction provided in the winding device.

It is therefore the object of the invention to improve the generic texturing machine for stretching and crimping synthetic threads in such a way that reliable thread guidance is possible when threading a thread up to the winding device in one of the processing stations at the start of the process. According to the invention, this object is achieved in that the suction device has a swiveling proboscis which can be positioned at a short distance opposite the blow end of the guide tube in order to take over the thread.

Advantageous developments are defined by the features and combinations of features in the respective subclaims.

The invention has the particular advantage that the auxiliary device cooperates with a positionable suction device to take over the thread in the winding device. In this way, the swiveling proboscis can be used to achieve the smallest possible distance between the blower end of the guide tube and the suction device. In addition, the mobility of the mammoth trunk allows it to be positioned with high accuracy relative to the end of the guide tube.

The development of the texturing machine according to the invention, in which the distance between a suction opening of the proboscis and a blowing opening of the guide tube in a transfer position of the proboscis is <150mm, is particularly in front of part to secure both threads with a fine denier and threads with a coarse denier transfer. In the case of larger distances above 150 mm, air resistance in particular can produce undesirable deflections with fine thread counts.

In order to be able to lead the thread taken over by the proboscis directly to the winding device, the development of the invention is preferably carried out in which the proboscis of the suction device of the winding device is vorgeord net in the thread path and can be moved within an angle of rotation of at least 180 °. Thus, on the one hand, the distance between the suction opening of the mammary trunk and the blowing opening of the blowing end can be further reduced. On the other hand, the thread continuously tapering towards the proboscis can be transferred to the winding device by means of the movement of the proboscis. For example, it is known that the clamping plates used to hold a winding tube have both catching and cutting means in order to take over a running thread. So that the most accurate possible positioning and alignment of the mammoth ge compared to the end of the guide tube is possible, a stepper motor is used as a rotary drive before given. In this way, a recurring, exact positioning of the trunk opposite a stationary end of the guide tube is possible.

Usually, the thread is fed to the winding device by a delivery plant within a processing point. For threading the thread on a delivery mechanism, the development of the invention is provided for this purpose, in which the guide tube opposite to the blower end one of the guide tubes has one of the injectors with egg nem suction tube, one suction end of the suction tube is assigned to a pivotable pressure roller of one of the delivery mechanisms, which Pressure roller cooperates with a delivery shaft for guiding the thread and wherein a bubble end of a further guide tube of the pressure roller is upstream in the thread run. In this way, the thread can be guided through a nip between the pressure roller and the delivery shaft during operation. For threading, the pressure roller is designed to be pivotable so that threading is possible.

For this purpose, a connecting line between the bladder end of the upstream guide tube and a suction end of the downstream suction tube crosses a movement path of the pressure roller. This ensures that a thread stretched between the blowing end and the suction end can be grasped solely by the movement of the pressure roller.

For this purpose, the pressure roller is held on a movable clamp holder, which can be guided between a threading setting or a clamping position by a holder drive. Thus, the pressure roller can be automatically guided into the clamping position after threading the thread.

Since the process units and delivery units within a machine frame cannot be arranged in a straight line one behind the other, but deflections between the process units and delivery units are unavoidable, the development of the texturing machine according to the invention is of particular importance, in which the suction end of the downstream suction pipe has a Baffle plate is assigned, which is arranged opposite a blow opening from the blow end of the vorgeordne th guide tube. The loose thread end that is blown out of a blowing opening of a blowing end is caught by the opposing baffle plate and enables a direct takeover through a suction opening at the suction end of the suction tube. In this way, thread deflections in particular can be overcome without strong curvatures in the guide tubes and suction tubes.

The development of the texturing machine according to the invention, in which the upstream guide tube has a further injector with a suction tube, which is connected to an outlet of a heating tube of a heating device, is preferably used at the processing points in which a thermal treatment to break down the thread before winding the thread Tension is required. There is thus the possibility that the thread is taken up via an inlet of the heating pipes of the heating device and automatically fed to the winding device with the aid of the auxiliary device. This results in significant advantages when threading the threads in the processing stations, which minimize the effort for an operator and also ensure a safe transfer of the thread into the winding device.

The texturing machine according to the invention is explained in more detail below using an exemplary embodiment with reference to the accompanying figures.

They represent:

Fig. 1 is a schematic view of a processing point of the Tex turiermaschine according to the invention

FIG. 2 schematically shows a plan view of the winding device of the exemplary embodiment from FIG. 1

Fig. 2.1

and

2.2 schematically shows a side view of a delivery mechanism of the exemplary embodiment from FIG. 1 in several operating situations In FIG. 1, a processing point of the texturing machine according to the invention for drawing and crimping a synthetic thread is shown schematically. Texturing machines of this type usually have a large number of processing points which are arranged next to one another within a machine frame. The structure of the processing points within the texturing machine is identical in this case, so that each of the processing points has several delivery mechanisms, several treatment devices and a winding device for winding a coil. Here, the delivery mechanisms, the treatment devices and the Spu l device for winding a bobbin are arranged in the machine frame to form a specific thread path. Since the treatment devices and delivery mechanisms have a smaller width in relation to the winding device, several Spuleinrich lines are thus arranged in the machine frame in layers one above the other and next to one another. Since such machine constructions of texturing machines are generally known, only a diagram of one of the processing stations with the delivery mechanisms, treatment devices and winding devices contained therein is shown in FIG. 1.

In the embodiment according to FIG. 1, a total of three delivery mechanisms 3, 7 and 19 are provided in order to guide a thread. A first delivery mechanism 3 is formed by a godet 3.1 and an overflow roller 3.2 being driven. Here, the first delivery system 3 and the following second delivery system 7 include a so-called texturing zone in which a first heating device 4, a cooling device 5 and a crimping device 6 are arranged as treatment devices. The second delivery mechanism 7 is also formed in this embodiment by a driven godet 7.1 and an overflow roller 7.2.

In the further course of the second delivery mechanism 7 follows a second heating device 10 and the third delivery mechanism 19, through which the thread to the winding device 21 leads GE. The third delivery mechanism 19 is formed in this case by a delivery shaft 19.1 and a pressure roller 19.2, which is held via a clamp 19.3 on the circumference of the delivery shaft 19.1 which is being driven. The clamp holder 19.3 is assigned a holder drive 19.4, by means of which the pressure roller 19.2 can be pivoted. The winding device 21 is shown schematically and has a bobbin holder 21.1, a drive roller 21.4 and several clamping plates 21.2 which are arranged at the end of the bobbin holder 21.1 and which carry a bobbin tube, not shown here. The drive roller 21.4 is driven. To guide the thread when winding a bobbin, the drive roller 21.4 is preceded by a traversing device 21.5 which has an oscillating driven traversing thread guide.

A pneumatic auxiliary device 11 is assigned to the second heating device 10, the third delivery mechanism 19 and the winding device 21 in order to enable the thread to be threaded in at the start of the process. The auxiliary device 11 cooperates with a suction device 22, which is arranged vorge in the thread run of the winding device 21. In this exemplary embodiment, the suction device 22 has a pivotable proboscis 22.1, which can be pivoted between several positions via a pivot drive 22.2. In the situation shown in FIG. 1, the proboscis 22.1 is in a transfer position in which the threading of a thread takes place.

In the transfer position of the trunk 22.1, a suction opening 22.3 of the trunk 22.1 lies exactly opposite a blow opening 16 of a blow end 15.2 of a guide tube 12.2. The guide tube 12.2 of the auxiliary device 11 has an injector 13.2 at an end opposite to the bladder end 15.2. The injector 13.2 has a suction pipe 14.2 on the suction side, which contains a suction end 17.2 with a suction 18 opening. The suction end 17.2 of the injector 13.2 is assigned to the third delivery mechanism 19 at a short distance.

On the opposite side of the third delivery mechanism 19, another guide tube 12.1 of the auxiliary device 11 is arranged. The guide tube 12.1 arranged in front of the third delivery mechanism 19 protrudes with its blowing end 15.1 to the third delivery mechanism 19. At the end opposite the blowing end 15.1, the guide tube 12.1 has a further injector 13.1 which is connected to a suction tube 14.1 on its suction side. The suction pipe 14.1 is coupled to an outlet 10.3 of a heating pipe 10.1 of the heating device 10. To thread a thread 24, the injectors 13.1 and 13.2 are connected to a compressed air source (not shown here), so that at the respective bubble ends

15.1 and 15.2 of the guide tubes 12.1 and 12.2 a blow stream is generated. A suction flow is generated at each of the suction ends 17.1 and 17.2 of the suction pipes 14.1 and 14.2. The suction effect of the injector 13.1 is propagated via the connection with the Heizroh re 10.1 to an inlet 10.2 of the second heating device 10. In this respect, a suction flow is present at the inlet 10.2 of the heating device 10, through which a loose thread end can be sucked into the heating tubes 10.1.

In order to start a process for drawing and crimping a synthetic thread at the processing point, a thread 24 is drawn off from a supply bobbin 1.1. The supply reel 1.1 is arranged at a gate location 1 and coupled to a reserve reel 1.2. For this purpose, the thread 24 is taken up by a hand injector 8 and threaded with several loops to the first delivery mechanism 3 and then to the first heating device 4, the cooling device 5 and the crimping device 6. The thread 24 is then applied to the second delivery mechanism 7 with several loops. The thread is now fed to the inlet 10.2 of the heating pipes 10.1 and cut, so that a loose thread end is sucked into the heating pipes 10.1 by the suction flow of the injector 13.1 and guided to the blowing end 15.1 of the guide pipe 12.1. In order to apply the thread 24 to the third delivery mechanism 19, in addition to the figures

3.1 and 3.2.

In FIGS. 3.1 and 3.2, the third delivery mechanism 19 is shown in various operating situations before and after the threading process. Thus, Fig. 3.1 shows the operating situation of the third delivery unit 19 during the threading of the thread through the auxiliary device 11 and Fig. 3.2 shows the situation in which the third delivery unit 19 is ready for operation.

As can be seen from the illustration in Fig. 3.1, a baffle plate 20 is assigned to the suction end 17.2 of the suction tube 14.2. The baffle plate 20 extends in the loading area of the suction opening 18 of the suction tube 14.2. On the side opposite to the third delivery mechanism 19, the blower end 15.1 is net angeord with a blower opening 16 at a distance opposite to the baffle plate 20. The pressure roller 19.2 is guided into a threading position by the holder drive 19.4 and the clamp holder 19.3 and forms a free space for the delivery shaft 19.1. In this situation, a loose thread end can be blown out via the blower end 15.1 in the direction of the baffle plate 20, the suction flow acting on the suction end 17.2 taking hold of the thread and continuing it via the guide tube 12.2. In this situation, the thread 24 forms a connecting line between the blowing end 15.1 and the suction end 17.2 which crosses a movement path of the pressure roller 19.2. Thus, by pivoting the pressure roller 19.2, the thread 24 can automatically be guided into a clamping gap between the pressure roller 19.2 and the delivery shaft 19.1. For this purpose, the holder drive 19.4 is activated and the pressure roller 19.2 is guided into its clamping position.

As can be seen from the illustration in FIG. 1, the thread is taken over for transfer to the winding device 21 by the proboscis 22.1 of the suction device 22. For this purpose, the blowing end 15.2 with a blowing opening 16 of the winding device 21 is turned. The proboscis 22.1 is held by the swivel drive 22.2 in the transfer position. In the transfer position, a distance is formed between the suction opening 22.3 of the Säugrüs sels 22.1 and the blowing opening 16 of the blowing end 15.2. The stand is marked in Fig. 1 with the capital letter A. The distance A between the proboscis 22.1 and the end of the bladder 15.2 is less than 150 mm. In this transfer position, the loose thread end is blown out of the blowing end 15.2 through the guide tube 12.2 on the basis of the blowing flow of the injector 13.2 and directly opposite the suction device 22 from the suction opening 22.3 of the suction trunk 22.1. The trunk 22.1 is coupled to a waste line, not shown here, in order to lead the thread to a waste container.

For further explanation, in addition to FIG. 1, reference is also made to FIG. 2. In Fig. 2, the winding device 21 is shown in a plan view. In this respect, the following description applies to both figures.

As can be seen from FIG. 2, a bobbin tube 21.3 is stretched between the clamping plates 21.2 and is held by the bobbin holder 21.1 on the drive roller 21.4. The proboscis 22.1 is also in the transfer position in FIG. 2.1. As soon as the thread is grasped by the proboscis 22.1, the pivot drive 22.2 is activated in order to pivot the proboscis 22.1 through an angle of rotation in the range of at least 180 °. In this way, the trunk 22.1 can be fed to the clamping plate 21.2, through which the thread is taken over. This situation is shown in dashed lines in FIG. The swivel drive 22.2 of the mammary trunk 22.1 is preferably designed as a stepper motor in order to be able to set a repeatable and exact positioning for taking over and for passing on the thread. In Fig. 2, the angle of rotation of the trunk is shown with the reference number a.

As can be seen from the illustration in FIG. 1, the guide tube 12.1 of the auxiliary device 11 is arranged below a platform 23. Since the winding devices 21 of adjacent processing stations are arranged in a tiered manner below or above the dargestell th winding device 31, the adjacent guide tubes 12.2 of the adjacent auxiliary devices have different lengths. The Spuleinrichtun conditions are therefore preferably arranged on a winding stand, which provides an operating aisle opposite a process stand in which the second heating device 10 is held. In this respect, the guide tube 12.1 is preferably provided for bridging a lower platform 23. For this purpose, the situation of an operating passage is shown schematically in FIG. 1.

In principle, the arrangement of the auxiliary device 11 shown in FIG. 1 is not limited to certain cross-sectional shapes of machine frames. It is essential here that the free stretches forming between the bubble ends 15.1 and 15.2 and the sowing 17.1 and 17.2 are kept as short as possible in order to obtain reliable and reproducible thread guidance when threading the thread.

Claims

1. Texturing machine for drawing and crimping synthetic threads with a multitude of processing points, each of the processing points having several delivery units (3, 7, 19), several treatment devices (4, 5, 6, 10) and a Spu leinrichtung (21) for winding a bobbin, each of the processing points having a pneumatic auxiliary device (11) with several guide tubes (12.1, 12.2) and several injectors (13.1, 13.2) for threading the thread, and the auxiliary device (11) with a blower end (15.1, 15.2) cooperates on egg nem of the guide tubes (12.1, 12.2) with one of the winding device (21) associated from the suction device (22), characterized in that the suction device (22) has a pivotable proboscis (22.1) which is used to take over the Thread with a short distance opposite to the end of the bladder (15.1, 15.2) of the guide tube (12.1, 12.2) can be positioned.

2. Texturing machine according to claim 1, characterized in that the distance (A) between a suction opening (22.3) of the mammary trunk (22.1) and a blowing opening (18) of the guide tube (12.1, 12.2) in a transfer position of the mammary trunk (22.1 ) is smaller than 150 mm.

3. Texturing machine according to claim 1 or 2, characterized in that the proboscis (22.1) of the winding device (21) is arranged upstream in the yarn path and is movable within an angle of rotation (2) of at least 180 °.

4. Texturing machine according to one of claims 1 to 3, characterized in that the proboscis (22.1) is coupled to a pivot drive (22.2) and that the pivot drive (22.2) is formed by a stepper motor.

5. Texturing machine according to one of claims 1 to 4, characterized in that the guide tube (12.1, 12.2) opposite the end of the blower (15.1, 15.2) has one of the injectors (13.1, 13.2) with a suction tube (14.1, 14.2) that a suction end (17.1, 17.2) of the suction pipe (14.1, 1.2) is assigned to a pivotable pressure roller (19.2) of one of the delivery mechanisms (3, 7, 19), which pressure roller (19.2) cooperates with a delivery shaft (19.1) for guiding the thread, and that a bladder end (15.1, 15.2) of a further guide tube (12.1, 12.2) is arranged upstream of the pressure roller (19.2) in the thread path.

6. Texturing machine according to claim 5, characterized in that a connecting line between the bladder end (15.1) of the upstream guide tube (18.1) and a suction end (17.2) of the downstream suction tube (14.2) crosses a movement path of the pressure roller (19.2).

7. Texturing machine according to claim 6, characterized in that the Andruckrol le (19.2) is held on a movable clamp holder (19.3) which can be guided between a threading position and a clamping position by a holder drive (19.4).

8. Texturing machine according to one of claims 5 to 7, characterized in that the suction end (17.2) of the downstream suction pipe (14.2) is assigned a baffle plate (20) which is spaced opposite a blow opening (18) from the blow end (15.1) of the upstream Guide tube (12.1) is arranged.

9. Texturing machine according to one of claims 5 to 8, characterized in that the upstream guide tube (12.1) has a further injector (13.1) with a suction tube (14.1) and that a suction end (17.1) of the suction tube (14.1) at an outlet (10.3) a heating pipe (10.1) a heating device (10) is ruled out.