JP5837064B2 - Equipment for melt spinning, drawing and winding multiple multifilament yarns - Google Patents

Description

  The present invention is arranged between the apparatus described in the premise of claim 1, that is, a spinning device, a cooling device, a drawing device, a winding device, and the cooling device and the winding device to wet the yarn. A plurality of multifilaments that are formed by two separate preparation processing stations, the preparation processing stations being arranged before and after the drawing device in a yarn path. The present invention relates to an apparatus for melt spinning, drawing and winding a yarn.

  In the production of synthetic yarns, especially synthetic yarns used in textiles, it is generally known to wet multifilament yarns after melt spinning and cooling. When the yarn is thus wetted, on the one hand, a large number of thin filaments can be gathered inside the yarn, and on the other hand, an antistatic state is obtained, and the filament composite of the yarn is connected to the guide element and godet. Can be reliably guided through. It is therefore common for such wetting of the yarn to take place immediately after the first cooling of the filament strands. However, the dampening solution provided in the yarn composite also has the following disadvantages. That is, particularly during heat treatment, in order to heat the yarn material to a predetermined treatment temperature, the dampening solution must be similarly heated or evaporated depending on its type and composition. Accordingly, a wide variety of methods and devices are known in the prior art to enable a dampening solution to be supplied to the yarn.

  In a known device, for example according to DE 19649809A1, the preparation processing device is formed by two separate preparation processing stations. In the first preparation processing station placed in front of the drawing device, a yarn preparation process is performed. At this time, a pretreatment amount of the dampening solution adapted to the subsequent heat treatment is supplied to the yarn. After the heat treatment and drawing, a post-preparation process is performed at the second pre-treatment station, which can provide the yarn with the amount of dampening solution necessary for further processing. In this way, at each preparatory treatment station, a clearly defined partial quantity of dampening solution is supplied to the yarn.

  In another device, known from WO 2009/141424 A2, which melt-spins, draws and winds multifilament yarns, the preparation device has only one preparation processing station after the drawing device. In this known device, the multifilament yarn is drawn from the spinning device without being wetted at all. In this case, the yarn is drawn in a dry state. In this case, however, additional means, such as an entanglement device, are required to guarantee the minimum yarn joints (Mindestfadenschluss) in the yarn before the drawing process.

  Basically, however, devices are known in the prior art in which, for example, according to DE 10309966 A1, the preparation processing device is formed by a preparation processing station arranged directly on the cooling device. In this known device, the preparatory processing station is arranged in a cooling device and is configured to be controllable for applying a dampening liquid. For example, the preparation processing station can be operated between the process speed for producing the yarn and the state at the start of the process (Anlegezustand). As a result, a predetermined amount of dampening liquid determined in advance is supplied to the yarn in any operating state.

  Furthermore, it is also known in the prior art to vary the amount of dampening liquid applied during the process in relation to continuously detected process parameters or product parameters. Such a device is described in DE 44 44 150 A1. In this case, the preparation processing station provided in the cooling device is controlled in association with the process monitoring, and the application amount of the preparation processing liquid is increased or decreased according to the measured value.

  All known devices for melt spinning, drawing and winding multifilament yarns each say that these devices can only cover a wide range of operating conditions for producing multifilament yarns to a very limited extent. In common. However, various operating conditions occur during the production of multifilament yarns in the melt spinning process. For example, at the start of the process, after spinning, the yarns are preferably inserted one after another through the process unit via a manually guided auxiliary device. It should be noted in this case that the continuously extruded filament strands can be continuously fed to the waste container during the entire setting process. After the end of the setting process, the process unit is accelerated to the process speed necessary to produce the yarn in the next stage. During this acceleration time, the yarn is already wound on bobbins, but these bobbins are treated as waste yarns. Therefore, in order to avoid yarn mixing in the bobbin, the bobbin is replaced after the process speed is reached. Furthermore, it is necessary to consider an operating state in which the yarn is cut in front of the drawing device on the basis of the yarn breakage and continuously becomes waste through a stationary suction device.

  The object of the present invention is therefore to improve the apparatus mentioned at the outset so that the yarn can be flexibly wetted in relation to the respective needs and operating conditions.

  This problem is solved according to the invention by the device according to the characterizing part of claim 1. That is, an apparatus according to the present invention includes a spinning device, a cooling device, a drawing device, a winding device, and a preparation processing device that is disposed between the cooling device and the winding device and wets the yarn. Is a device for melt spinning, drawing and winding a plurality of multifilament yarns, which are formed by two separate preparation processing stations, which are arranged before and after the drawing device in the yarn path. Wherein at least one of the preparatory processing stations is configured to be controllable and / or switchable to adjust the yarn wetting action.

  Advantageous embodiments of the invention are described in the dependent claims.

  The present invention is distinguished by the fact that at least one of the preparation processing stations can be used to obtain a yarn wetting action adapted to the respective operating conditions. In this case, alternatively, it is possible to change only the amount of dampening solution supplied, or to completely disconnect and connect the preparation processing station. It is also possible to change the amount of dampening liquid to be supplied in the connected state. To that end, at least one of the preparation processing stations is configured to be controllable and / or switchable to adjust the yarn wetting action.

  In particular, in a preferred embodiment of the invention used to produce fully drawn yarns that are heat treated for drawing, the first pretreatment station is optionally operated with yarn wetting action. It is possible to switch between a state and a resting state without thread wetting action. When configured in this way, during the production of the yarn, the yarn can be wetted only via the second preparation processing station, and therefore the first preparation processing station for drawing out the dried yarn. Is moved to a dormant state. Alternatively, it is also possible for the yarn to be wetted directly by the first preparation processing station for insertion, which ensures that the yarn is placed on the process unit before static expansion. And can be discharged into a waste container.

  In order to keep the yarn friction as low as possible when guiding the yarn, the first preparation station is preferably formed with movable dampening means, so that the dampening means can be selectively used. , It is possible to guide to an operation position that comes into contact with the yarn and a rest position that does not come into contact with the yarn. In order to insert and set the yarn, the yarn is guided in contact with the dampening means. However, this yarn contact during yarn manufacture is avoided by moving the dampening means to the rest position.

  In the thread connection during thread insertion, the dampening means of the first preparatory processing station is preferably formed by a plurality of pin-type lubrication devices, and the pin-type lubrication devices are connected to one common movable holding body. It can be improved by being held. For example, all yarns extruded in the spinning position can be guided simultaneously through the dampening means.

  During the production of the yarn, each yarn is wetted by a second preparatory treatment station on the exit side of the drawing device. For this purpose, this second pretreatment station preferably has a stationary dampening means with a contact surface of the microporous structure, along which the yarns are parallel to each other. It is possible to guide at high speed. What is important in this case is that partial winding is performed on the contact surface of the microporous structure, whereby the yarn can be sufficiently wetted even at a very high yarn traveling speed.

  Since the requirements for the preparation processing station are substantially defined by a wide variety of operating conditions, the preparation processing device is preferably formed with two separate supply units, said supply units being said preparation units. Arranged at the processing station. The supply units may in this case both be connected to one tank or preferably connected to two tanks separately. For example, different fountain solutions can be supplied to the yarns in the first preparation processing station and the second preparation processing station.

  Next, embodiments of the present invention will be described with reference to the drawings.

1 is a side view showing a first embodiment of an apparatus according to the present invention. FIG. 6 is a side view showing another embodiment of the apparatus according to the present invention.

  FIG. 1 shows a side view of a first embodiment of an apparatus according to the invention for melt spinning, drawing and winding a plurality of multifilament yarns. In order to melt-spin multifilament yarn, a spinning device 14 having a heatable spinning beam 1 is provided, and the spinning beam 1 has a spinning nozzle 3 having a number of nozzle openings below it. The melt supply path 2 is provided on the upper side. The melt supply path 2 is connected to a melt source (not shown) such as an extruder. Although not touched in detail here, another member for guiding the melt and conveying the melt may be disposed inside the spinning beam 1.

  The spinning beam 1 has a plurality of spinning nozzles 3 on the lower side thereof, whereby a plurality of yarns can be simultaneously arranged in parallel with each other and spun in a row arrangement format or a zigzag arrangement format. Since the spinning beam 1 is oriented perpendicular to the drawing plane, only one of these spinning nozzles 3 is visible in FIG. Therefore, subsequent devices and units will be described in detail with respect to only one yarn path. Basically, a total of five yarns that are produced parallel to each other are processed simultaneously.

  A cooling device 6 is provided under the spinning device 14, and this cooling device 6 is formed by a cooling duct 8 and a blow device 7. The cooling duct 8 is disposed below the spinning nozzle 3, and a large number of filaments 4 extruded through the spinning nozzle 3 pass through the cooling duct 8. A cooling air flow can be generated via the blow device 7, this cooling air flow being introduced into the cooling duct 8, whereby the filament 4 extruded through the spinning nozzle 3 is simultaneously cooled by the cooling flow. The

  A collecting yarn guide 9 is disposed under the cooling duct 8, whereby the filaments 4 are combined into one filament bundle 5. For this purpose, the collecting yarn guide 9 is arranged in the middle under the spinning nozzle 3, whereby the filaments 4 are evenly bundled in the collecting yarn guide 9.

  The collective yarn guide 9 is provided with a first preparation processing station 16.1 of the preparation processing device 16. This first preparatory processing station 16.1 comprises, in the illustrated embodiment, a dampening means 36.1, a supply unit 17.1 and a tank 19.1, in which case the supply unit 17.1 is a control device. 18. The dampening means 36.1 is in this case formed stationary and is combined with the collecting yarn guide 9. The supply unit 17.1 preferably has a metering pump, which can produce a controllable volume flow of dampening fluid.

  Below the cooling duct 8, a descending duct 10 is disposed adjacent to the cooling duct 8, and a running yarn guide 11 is disposed on the exit side of the descending duct 10. Inside the descending duct 10, the filament bundle 5 is grouped into one processing interval starting from the spinning pitch defined by the spacing of the spinning nozzles 3. For this purpose, the filament bundle 5 is initially brought into the processing interval by the run-in yarn guide 11 so that the filament bundle 5 is guided parallel to each other with a short interval in the range of 3-8 mm. it can.

  Under the descending duct 10 is arranged a stretching device 15 comprising a plurality of driven godets 20.1 to 20.4. In this case, the godets 20.1, 20.2 form a first godet pair 13.1, and the godets 20.3, 20.4 form a second godet pair 13.2. The godets 20.1, 20.2 of the first godet pair 13.1 are arranged one above the other and are driven at the same speed and in the reverse direction by separate motors. Thus, the left rotating motor and the right rotating motor are used to drive the godets 20.1, 20.2 and the godets 20.3, 20.4 of the second godet pair 13.2. The godet peripheral walls of godets 20.1 to 20.4 are heated to draw the yarn, particularly in the transition region between both godet pairs 13.1, 13.2.

  In order to draw the filament bundle 5 out of the spinning zone, a yarn brake 12 is placed in front of the first godet pair 13.1 in the yarn path. In the illustrated embodiment, the yarn brake 12 is formed by a plurality of turning rollers supported so as to be freely rotatable. The filament bundle 5 is guided by being partially wound around each deflecting roller. In this case, each filament of the filament bundle 5 has a belt-like arrangement. Thereby, a belt-shaped yarn guide around the godets 20.1 to 20.4 can be achieved.

  The first godet pair 13.1 serves to pull out the filament bundle 5. For this purpose, the filament bundle 5 is guided by being partially wound around the guide peripheral walls of the godets 20.1 and 20.2 only once. The filament bundle 5 is wound around the guide peripheral walls of the godets 20.1 and 20.2 in an S-shaped yarn path. For this purpose, the godets 20.1, 20.2 are preferably arranged in such a way that a winding angle of more than 180 ° is produced in this yarn path.

  The second godet pair 13.2 is driven at a higher stretching speed compared to the withdrawal speed. In this case, the filament bundle 5 is similarly guided by being wound only once in an S shape in the godets 20.3 and 20.4. The godet pair 13.1, 13.2 is arranged in the godet box 21. For this purpose, the filament bundle 5 is guided through the inlet of the godet box 21 and the outlet of the godet box 21.

  Below the godet box 21, a second preparation processing station 16.2 and another driven godet 20.5 are arranged. The preparatory processing station 16.2 has a stationary dampening means 36.2 which is connected to the supply unit 17.2. The supply unit 17.2, preferably formed by a metering pump, is connected to a tank 19.2 containing a dampening liquid. The dampening means 36.2 has a microporous contact surface 37 which is brought into contact with the filament bundle 5 guided between the godets 20.4, 20.5.

  As viewed in the yarn traveling direction, another driven godet 20.6 is disposed behind the godet 20.5, and this godet 20.6 is held on the winding device 23. Between the godets 20.5 and 20.6, an entanglement device 32 is arranged in the tensioned yarn part, which makes it possible to make the dampening solution uniform in the yarn 22 and to connect the yarn joints (Fadenschluss). Can be formed by the formation of entangled nodules (Verflechtungsknote). In this case, the yarn tension for entanglement of the yarn 22 can preferably be determined by the speed difference adjusted between the godets 20.5 and 20.6.

  A hoisting device 23 is arranged under the godets 20.5 and 20.6. In the illustrated embodiment, the hoisting device 23 is formed by a so-called bobbin revolver, which is a rotatable spindle with two winding tube spindles 27.1, 27.2 projecting in a cantilever manner. A holding body 29 is provided. The spindle holder 29 is supported on the machine frame 30. In this case, the winding spindles 27.1 and 27.2 can be guided alternately into an operating area for winding the bobbin and an exchange area for exchanging the bobbin. The machine frame 30 is provided with a traverse device 25 and a pressure roller 26 for winding the yarn 22 around the bobbin 28. A head yarn guide 24 is provided on the traverse device 25, and the head yarn guide 24 guides the yarn 22 to enter the winding position. In the illustrated embodiment, the head yarn guide 24 is formed by a freely rotatable turning roller, thereby turning the yarn running from the godet 20.6 from a substantially horizontal distribution plane to the winding point. Can do.

  The embodiment shown in FIG. 1 is shown in an operating state in which a plurality of multifilament yarns are continuously manufactured side by side. In this case, the dampening necessary for the yarn can be implemented in a wide variety of forms. In a first alternative configuration, the supply unit 17.1 is brought into a dormant state by the controller 18 in the first preparation processing station 16.1, in which the dampening means 36.1 is dampened. Liquid does not flow out. In such a case, the filament bundle 5 is collected by the collecting yarn guide 9 without adding a dampening solution. Thus, the filament bundle 5 advances from the descending duct 10 in a substantially dry state and is supplied to the stretching device 15. After drawing by the drawing device 15, the filament bundle 5 is wetted with a dampening liquid at the second pretreatment station 16.2. In this case, an oil / water emulsion or a pure oil having a low viscosity is preferably used as the dampening liquid in order to produce a yarn bonding portion. The distribution of the dampening liquid inside the yarn composite (Fadenverbund) and the final yarn joint is then adjusted by the entanglement device 32.

  When forming a filament sensitive to charging, the apparatus of the embodiment shown in FIG. 1 can be used as follows. That is, in this case, the supply unit 17.1 is adjusted by the control device 18 in the preparation processing station 16.1 so that the minimum amount of dampening liquid taken out from the tank 19.1 is supplied to the filament bundle 5. Yes. In particular, this makes it possible to optimize the yarn guide between the cooling device 6 and the drawing device 15. By using two separate tanks 19.1, 19.2 separated, different dampening liquids can be used in the preparation processing stations 16.1, 16.2 to wet the yarn.

  If the yarn needs to be anlegenated by the operator before the start of the process, the filament bundle 5 is guided using a manually guided suction gun 38 after spinning by the spinning nozzle 3. This state is indicated by a broken line in FIG. In this case, the filament bundle 5 is continuously wetted with the dampening liquid via the first pretreatment station 16.1. For this purpose, the supply unit 17.1 is brought into a specific operating state via the control device 18, i.e. the dampening liquid taken out from the tank 19.1 is continuously supplied to the filament bundle 5 which is guided manually. Switch to the operating state. Accordingly, the filament bundle 5 can be easily inserted into the subsequent process unit of the drawing device 15 and the winding device 23 and set. Static expansion or expansion of the filament bundle 5 which makes the setting work difficult is avoided. Further, the filament is not caught or entangled during insertion into a manually guided suction gun.

  FIG. 2 schematically shows a side view of another embodiment of the device according to the invention. Since the embodiment shown in FIG. 2 is substantially the same as the embodiment shown in FIG. 1, only the main differences will be described below.

  In the embodiment shown in FIG. 2, the preparation processing station 16.1 has movable dampening means 36.1. This dampening means 36.1 is formed by a pin-type lubrication device (Stiftoeler) 33 in this embodiment, and this pin-type lubrication device 33 is held by a holding body. The holder 34 can reciprocate along the guide rail 35 in a direction transverse to the yarn traveling direction. This allows the dampening means 36.1 to be selectively guided to an operating position where the yarn contacts and a rest position where the yarn does not contact. In FIG. 2, the rest position of the dampening means 36.1 is shown by a solid line. The operating position of the dampening means 36.1 is indicated by a broken line. The dampening means 36.1 is connected to the supply unit 17.1 by means of a flexible conduit, and this supply unit 17.1 is connected to the tank 19.

  In the illustrated embodiment, the stretching device 15 arranged below the descending duct 10 is configured with a drawer godet 39 in the entrance region. The drawing godet 39 pulls the filament bundle 5 out of the spinning device 14. Since the other godets of the stretching device 15 are configured in the same manner as the above-described embodiment, description thereof will be omitted here.

  In this embodiment, the second preparation processing station 16.2 placed after the stretching device 15 is formed in the same way as the embodiment shown in FIG. 1, and in this case both preparation processing stations 16.1, 16 .2 supply units 17.1, 17.2 are both connected to the tank 19. As a result, the same dampening solution is applied to the yarns at both preparatory treatment stations 16.1, 16.2.

  In the embodiment shown in FIG. 2, the preparation processing station 16.1 is mainly used only for wetting the filament bundle during the setting operation. For this purpose, the dampening means 36.1 of the preparatory treatment station 16.1 are guided to the operating position, so that the filament bundle 5 drawn out via the manually guided suction gun 38 is moved to the suction gun 38. Wet with dampening solution before entering. After the setting operation has been completed and the production operation can be started, the dampening means 36.1 is guided to the rest position. Therefore, the holding body 34 is guided along the guide rail 35 from the yarn path to a rest position where it does not come into contact with the yarn. In this case, the movement of the holding body 34 can be carried out manually or via an adjusting actuator.

  Since the holding bodies 34 in the preparatory processing station 16.1 have one pin-type lubrication device 33 for each yarn, the ingress and the withdrawal of the dampening means 36.1 are all guided in parallel to one another. It can be performed uniformly on the yarn. Therefore, accurate movement adjustment can be easily performed.

  In addition, the preparatory processing stations 16.1, 16.2 may have a separate dampening means for each yarn path. In principle, all general structural variations can be used to wet the multifilament yarn.

  Furthermore, an embodiment in which a separate control device is assigned to the supply unit 17.2 is also possible, in which case the application of the preparation treatment liquid to the yarn can be changed during the process. it can.

DESCRIPTION OF SYMBOLS 1 Spinning beam 2 Melt supply path 3 Spinning nozzle 4 Filament 5 Filament bundle 6 Cooling device 7 Blowing device 8 Cooling duct 9 Collecting yarn guide 10 Descent duct 11 Running yarn guide 12 Yarn brake 13.1, 13.2 Godet pair 14 Spinning device 15 Drawing device 16 Preparation processing device 16.1, 16.2 Preparation processing station 17.1, 17.2 Supply unit 18 Control device 19, 19.1, 19.2 Tank 20.1 to 20.6 Godet 21 Godet box 22 Yarn 23 Winding device 24 Head yarn guide 25 Traverse device 26 Pressure roller 27.1, 27.2 Winding tube spindle 28 Bobbin 29 Spindle holder 30 Machine frame 31 Winding tube 32 Interlacing device 33 Pin type lubrication device 34 Holder 35 Guide rail 36.1, 36.2 Wetting means 37 Contact surface 38 Support ACTION GUN 39 Drawer Godet

Claims (7)

It is arranged between the spinning device (14), the cooling device (6), the drawing device (15), the winding device (23), and the cooling device (6) and the winding device (23) to wet the yarn. A preparatory processing device (16), the preparatory processing device (16) being formed by two separate preparatory processing stations (16.1, 16.2), the preparatory processing station (16.1). , 16.2) is a device for melt spinning, drawing and winding up a plurality of multifilament yarns arranged before and after the drawing device (15) in the yarn runway,
At least one of the preparation processing stations (16.1, 16.2) is configured to be controllable and / or switchable to adjust the yarn wetting action, and the first preparation processing station (16 .1) is arranged on the upstream side of the stretching device (15), and the first preparation processing station (16.1) further comprises a movable dampening means (36.1), The means (36.1) can be selectively guided to an operating position in contact with the yarn and a rest position not in contact with the yarn. And a device to wind up.   2. The apparatus according to claim 1, wherein the first pretreatment station (16.1) is selectively switchable between an operating state with a yarn wetting action and a resting state without a yarn wetting action. The dampening means (36.1) is formed by a plurality of pin-type lubrication devices (33), and the pin-type lubrication device (33) is held by one common movable holding body (34). The apparatus of claim 1 . Second preparation processing station (16.2) has a damping means stationary with a contact surface of the microporous structure (37) (36.2), of any one of claims 1 to 3 apparatus. The preparatory processing device (16) has two separate supply units (17.1, 17.2) for supplying dampening liquid. the preparation process is connected to the station (16.1, 16.2) a device as claimed in any one of claims 1 to 4 in. The supply units (17.1, 17.2) are both connected to one tank (19) or separately connected to two tanks (19.1, 19.2). 5. The apparatus according to 5 . At least one control device (18) is provided, the control device (18), said being connected to one of the supply unit (17.1, 17.2), according to claim 5 or 6 The device described.

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