Methods to protect synthetic yarn

Abstract

The present invention relates to a method for supplying synthetic yarns (F1-Fn) from a melt spinning and winding apparatus (1), which comprises a melt spinning apparatus (10) configured to extrude synthetic yarns (F1-Fn) and a winding apparatus (20) configured to wind up synthetic yarns (F1-Fn), wherein the yarns (F1-Fn) can be supplied from the melt spinning apparatus to the winding apparatus (40) by a drop chute (30). The supply is adjustable by predetermined pressure ranges (I, II, III) in the suction device (50) of the winding apparatus (40). Furthermore, the present invention relates to an associated winding apparatus.

Description

Technical Field

[0001] The present invention relates to a method for supplying a synthetic yarn from a melt spinning winding device described in the preamble of claim 1, and a related winding device for winding a synthetic yarn from a melt spinning winding device.

Background Art

[0002] It is generally known to supply yarn from a spinning mechanism to a winding device via a dropping chute.

[0003] German Patent Application Publication No. 102004036640 describes a spinning method for producing chemical fibers and a dropping chute for use in such a method. By extruding using a melt spinning device and cooling using a cooling duct, a plurality of synthetic fibers in the form of a filament bundle are produced from the melt. In that case, since the filament bundle is drawn out from the dropping chute at a very high linear velocity, the filament bundle carries cooling air along the chute. At the end of the dropping chute including the outlet, the cross section of the dropping chute expands in the direction of the outlet. Preferably, the cross-sectional profile has a constriction.

[0004] A plurality of synthetic fibers need to be fed to the associated winding device after the start of extrusion. For this purpose, a plurality of synthetic fibers are dropped through the cooling duct and the dropping chute to the winding device.

[0005] If the dropping is not performed accurately enough, the plurality of synthetic fibers cannot be captured accurately enough and fed to the winding device, which may lead to an increase in non-windable synthetic fibers and, as a result, an increase in the amount of waste.

Summary of the Invention

Problems to be Solved by the Invention

[0006] Therefore, the object of the present invention is to provide a method that enables reliable and easy supply of multiple synthetic fibers via a drop chute, and that avoids waste.

[0007] Furthermore, an object of the present invention is to provide a winding device for winding synthetic yarn that can be supplied reliably and without waste. [Means for solving the problem]

[0008] This problem is solved, in terms of method, by the method according to the present invention for supplying synthetic yarn from a melt spinning winding apparatus having the features described in claim 1.

[0009] According to one aspect of the present invention, a method is provided for supplying synthetic yarn from a melt-spinning and winding apparatus, which comprises a melt-spinning apparatus configured to extrude synthetic yarn and a winding apparatus configured to wind up synthetic yarn. The yarn can be supplied from the melt-spinning apparatus to the winding apparatus by a drop chute. The supply is adjustable by a predetermined pressure range in the suction device of the winding apparatus.

[0010] Advantageous embodiments and variations of the method will become apparent from the embodiments described below.

[0011] The winding device is equipped with a suction device that operates, for example, when loading synthetic yarn. The suction device can assist in improving the loading and supply of synthetic yarn by accurately supplying the yarn that is fed from the drop chute and falling, and the drop point is positioned and determined more precisely by a predetermined suction within a predetermined pressure range.

[0012] In a preferred embodiment of this method, when the synthetic yarn is guided from the melt spinning apparatus to the winding apparatus, a first pressure range having a predetermined first pressure value is provided to the suction device. -When synthetic yarn is loaded into the winding device, a second pressure range having a predetermined second pressure value is provided to the suction device, and / or -When synthetic yarn is loaded into the winding device, a third pressure range having a predetermined third pressure value is provided to the suction device.

[0013] By providing different pressure ranges with predetermined pressure values ​​in the suction direction based on the position of the yarn in the melt spinning winding device, yarn capture and supply are improved and energy consumption is reduced.

[0014] In another particularly preferred embodiment of the method, the first pressure value has a different numerical value from the second pressure value and / or the third pressure value, and / or the first pressure value, the second pressure value and / or the third pressure value are adjusted based on the denier, composition and / or properties of the synthetic yarn.

[0015] Depending on the yarn being manufactured, the molten material used, and the yarn's denier, different pressure ranges may be required to optimally feed the yarn. Furthermore, the required pressure value will also vary depending on the position of the yarn in the melt spinning winding machine, which in turn will result in different pressure values.

[0016] In a particularly preferred embodiment of the method, the first pressure range is substantially 550 to 850 hPa, the second pressure range is substantially 150 to 550 hPa, and / or the third pressure range is substantially 0 to 150 hPa.

[0017] Advantageously, because the pressure range differs depending on the position of the thread, energy can be saved to provide each respective pressure range.

[0018] According to a particular embodiment of the method, closed-loop control (Regelung) and / or open-loop control (Steuerung) of the pressure range are performed manually and / or automatically, the open-loop control of the pressure range is controlled over a predetermined period of time, and the closed-loop control of the pressure range is performed via sensors capable of tracking the position of the yarn in the melt spinning and winding devices.

[0019] To control the pressure range in a closed loop, it is advantageous to provide additional sensors that check the control process based on predetermined data and adjust the pressure range accordingly.

[0020] According to another embodiment of the method, the pressure range can be adjusted by open-loop control, and the duration of the pressure range is performed over a predetermined period that can be determined by empirical values.

[0021] According to a particular embodiment of the method, open-loop and / or closed-loop control of a pressure range is combined with an automatic, semi-automatic, and / or manual mechanism process.

[0022] Pressure range open-loop and closed-loop control can be applied to automatic, semi-automatic, or manual loading processes. In this case, an automatic loading process can be understood as a method of loading the synthetic yarn into the winding device by an appropriate robot or loading support device without requiring operator intervention. A semi-automatic loading process requires partial operator intervention and is a combination of partially manual and automatic loading processes. A manual loading process can be understood as the synthetic yarn being completely loaded into the winding device by an operator.

[0023] According to a particularly preferred embodiment of the method, the first pressure range, the second pressure range, and / or the third pressure range are kept constant with respect to time and / or vary with respect to time.

[0024] The pressure values ​​within a pressure range can be kept constant over a predetermined period of time. However, it may also be necessary for the pressure values ​​within each pressure range to increase and / or decrease over time. This can be achieved by appropriately throttling or controlling the compressed air or intake air. This has the advantage of saving energy.

[0025] According to a special embodiment of the method, when the first pressure range is applied, the cross-section of the dropping chute is narrowed by a cross-section narrowing device and enlarged when the second pressure range is applied.

[0026] The cross-section of the dropping chute has a predetermined cross-sectional area open towards the winding device. For an advantageous utilization of the suction air, the cross-sectional area of the outlet opening of the dropping chute can be narrowed by a cross-section narrowing device, depending on which pressure range is applied. In particular, when the synthetic yarn drops into the dropping chute, the yarn is moved at a relatively high pressure value, so that the first pressure range is advantageous, enabling reliable capture of the synthetic yarn.

[0027] According to a special embodiment of the method, in order to supply the synthetic yarn, the following steps are carried out, namely - extruding a plurality of filaments from a plastic melt and forming a synthetic yarn by combining the plurality of filaments, - supplying the synthetic yarn to the inlet opening of the dropping chute, - introducing the synthetic yarn into the dropping chute, - providing a first pressure range to the suction device, - reducing the cross-sectional area of the outlet opening of the dropping chute, - capturing the synthetic yarn with the suction device, - enlarging the outlet opening of the dropping chute, - providing a second pressure range to the suction device, - feeding the synthetic yarn to the winding device, - providing a third pressure range to the suction device are carried out.

[0028] The above problem is solved, with respect to the winding device, according to the invention, by a winding device having the features described in claim 10.

[0029] According to one aspect of the invention, a winding device for winding a synthetic yarn from a melt spinning device is provided, which is set up to carry out the method according to at least one of the前述 embodiments.

[0030] Advantageous embodiments and developments of the winding device will become apparent from the embodiments described below.

[0031] According to a special embodiment of the winding device, a drop chute belonging to the winding device has a cross-sectional narrowing device formed at the outlet opening of the drop chute, the cross-sectional narrowing device having a wing-shaped flap, the wing-shaped flap being articulated to the outlet opening of the yarn drop chute and movable by manual and / or actuator between a cross-sectional narrowing position for narrowing the outlet opening and a cross-sectional widening position for opening the outlet opening.

[0032] The winding device is equipped with a drop chute for supplying synthetic yarn. The drop chute has a cross-sectional narrowing device at its outlet opening, which allows the suction flow generated by the winding device's suction device to act effectively on the drop chute and the synthetic yarn supplied into it, thereby allowing the pressure range to work more effectively and enabling the synthetic yarn to be supplied to the winding device with precise targeting.

[0033] In another particularly preferred embodiment of the winding device, the suction device has a first suction port connectable to a capture basket, and / or the first suction port has an acceleration nozzle.

[0034] The suction device has a first suction port that can guide the suction flow to a drop chute. A capture basket is provided to capture synthetic threads in order to assist the suction action.

[0035] Furthermore, an acceleration nozzle can be provided at the first suction port, which has an improved suction action, especially when threading. The acceleration nozzle enhances and improves the suction action, for example, by having an adjustable flow cross-section.

[0036] In a preferred embodiment of the winding device, the capture basket is configured to bypass the airflow from the first intake port.

[0037] The capture basket is configured to direct at least a portion of the airflow towards the drop chute exit opening, thereby allowing the synthetic yarn to be guided more effectively to the winding device.

[0038] The capture basket has corresponding deflection plates or deflection surfaces, which allow the airflow generated by the intake port of the intake device to be redirected, in particular, to the outlet of the air chute.

[0039] In another particularly preferred embodiment of the winding device, the suction device has a second suction port that cooperates with a yarn cutting device set to cut the synthetic yarn.

[0040] Furthermore, the suction device has a second suction port located near the yarn cutting device in the winding device. The yarn cutting device has the function of cutting yarn and for this purpose is equipped with a so-called draw chopper device (Raffhackervorrichtung) that has a blade capable of cutting yarn. Next to the yarn cutting device is a second suction port that can draw in synthetic yarn coming from the spinning device, thereby preventing the winding device from being contaminated with newly manufactured synthetic yarn that can no longer be wound.

[0041] The suction device not only has the function of supplying synthetic yarn, but also the function of discharging synthetic yarn when the yarn that should be wound onto the winding device can no longer be wound, for example, due to yarn breakage. At this point, the synthetic yarn is continued to be fed by the spinning device, and if the yarn cutting device is activated, the synthetic yarn is sucked into the second suction port of the suction device.

[0042] The second suction port of the suction device works in cooperation with a yarn cutting device that operates when yarn breakage occurs while the yarn is being wound in the winding device. When yarn breakage occurs, the yarn cutting device (Fadenschneidvorrichtung) cuts the yarn, and the second suction port associated with the suction device is activated, and the yarn extruded by the melt spinning device is sucked in through the second suction port until the winding device is ready for a new winding process, the winded package that has not been fully wound is removed from the associated winding spindle, or a corresponding empty cylinder is provided to the winding spindle in the winding device. This also presupposes the loading of the yarn into the winding device, and the yarn must be transported towards the winding device at least from the second suction port.

[0043] In a particularly preferred embodiment of the winding device, the airflow bypass line is detachably connectable to the first suction port of the suction device and / or the second suction port of the suction device adjacent to the thread cutting device.

[0044] In a preferred embodiment of the winding device, an airflow bypass line is provided that can be selectively connected to a first suction port of the suction device and a second suction port of the yarn cutting device. This allows the suction capacity of the suction device to be used at various positions, on the one hand to better supply synthetic yarn, and on the other hand to assist in cutting yarn, particularly in the event of yarn breakage. In both cases, the sucked-in synthetic yarn is collected in a waste collection device which will not be described further.

[0045] The airflow bypass line can be, for example, a bypass line and / or a corresponding valve wing flap, which can supply the intake airflow to a first intake port or a second intake port of the intake device.

[0046] Other combinations of advantages and features will become apparent from the following description of exemplary embodiments of the method and apparatus.

[0047] The method and winding apparatus of the present invention will be described in more detail below, based on several exemplary embodiments with reference to the attached figures. [Brief explanation of the drawing]

[0048] [Figure 1] This is a schematic front view of a first exemplary embodiment of the apparatus according to the present invention. [Figure 2] This is a schematic diagram of the exit opening of a drop chute equipped with a cross-sectional narrowing device that narrows the exit opening of the drop chute. [Figure 3] This is a schematic diagram of the outlet opening shown in Figure 2, when the cross-sectional narrowing device is opened. [Figure 4] This is a schematic side view of the winding device, the outlet opening with the cross-sectional narrowing device open, and the suction device for the first pressure range. [Figure 5] Figure 4 shows each of the devices and the suction device for the second pressure range. [Figure 6] Figure 4 shows the various devices and the suction device for the third pressure range, with the synthetic yarn fully loaded into the winding device. [Figure 7] This is a pressure function graph showing the first, second, and third pressure values ​​for the first, second, and third pressure ranges, respectively, with respect to time. [Figure 8] This figure shows an exemplary embodiment of a pressure function graph, where the first, second, and third pressure values ​​for the first, second, and third pressure ranges with respect to time are shown as different values. [Figure 9] This is a schematic block diagram of the process for setting up and supplying synthetic yarn. [Modes for carrying out the invention]

[0049] Figure 1 shows a schematic perspective view of the melt spinning and winding apparatus 1. The melt spinning and winding apparatus 1 comprises a melt spinning device 10 configured to extrude synthetic yarns F1 to Fn, and a winding device 20 configured to wind up the synthetic yarns F1 to Fn.

[0050] The yarns F1 to Fn are supplied from the melt spinning device 10 to the winding device 40 in the yarn falling direction FR via the drop chute 30.

[0051] Between the spinning apparatus 10 and the drop chute 30, there is an additional cooling duct 20 for cooling the yarn F1 to Fn extruded from the melt spinning apparatus 10.

[0052] The melt spinning apparatus 10 has a spinning beam 11 equipped with multiple spinning packs 14. Molten plastic is supplied to each spinning pack using a molten material supply line 12, thereby allowing each spinning pack 14 to extrude multiple filaments. The multiple filaments from each spinning pack 14 are gathered at a convergence point 21 located in a cooling duct 20, forming synthetic yarns F1 to Fn.

[0053] For clarity, the diagrams show only a maximum of two spinning packs or synthetic yarns as an example. In practice, or in preferred exemplary embodiments, each winding device 10, and therefore each winding device 40, may be provided with up to 12 and more spinning packs in each melt spinning device 10.

[0054] Preferably, the focusing point 21 is provided with a corresponding preparation position and / or guide position, which are spaced apart from each other.

[0055] The drop chute 30 shown in Figure 1 has a predetermined number of rectangular drop chute sections 31, trapezoidal drop chute sections 32, and a drop chute outlet section 33. The drop chute 30 forms a protected guide channel for the extruded, cooled, and bundled yarns F1 to F10, connecting the section or distance between the cooling duct 20 and the winding device 40.

[0056] The section or distance of the drop chute 30 can be made shorter and / or longer depending on the equipment.

[0057] The drop chute 30 has an inlet opening 37 adjacent to the cooling duct into which synthetic yarns F1 to Fn can be fed, and an outlet opening 36 next to the winding device 40 from which the synthetic yarns F1 to Fn exit. As a result, the synthetic yarns F1 to Fn are loaded into the winding device 40 and wound onto a cylinder (not shown) attached to the winding spindle 43 of the winding device 40 to form a wind package 100.

[0058] Furthermore, each rectangular section 31 of the drop chute has a rectangular cross-section, and this rectangular cross-section is maintained constant throughout its entire length. In contrast, the trapezoidal section 32 of the drop chute and the drop chute outlet section 33 have a cross-section that narrows towards the outlet opening.

[0059] The winding device 40 has a gullet section 41 and a winding spindle section 42.

[0060] The galette portion 41 is equipped with a stretching mechanism having a first galette 71 and a second galette 72, as schematically shown in Figure 4, for example.

[0061] A transfer roller (Verlegerolle) 70 is positioned between the first gullet 71 and the second gullet 72, and is movable along a guide 75 from the second gullet 72 toward the first gullet 71 in order to load the synthetic threads F1-Fn into at least the second gullet 72, as schematically shown sequentially in Figures 4 and 5.

[0062] Referring to Figure 6, the winding device 40 has a winding section 42 with two winding spindles 43 for winding the winded package 100 at multiple winding points W1 to Wn. The number of the first to nth winding points W1 to Wn also defines the number of winded packages 100 and corresponds to the number of the first to nth threads F1 to Fn.

[0063] Furthermore, a suction device 50 is provided in the gullet section 41 of the winding device 40. The suction device 50 has a thread suction line 53, through which it can provide suction airflow at predetermined first pressure values ​​D1, second pressure value D2, and third pressure value D3, which can be provided in predetermined pressure ranges I, II, and III, respectively.

[0064] Figure 1 schematically shows which pressure ranges I, II, III or pressure values ​​D1, D2, D3 are supplied to the suction device 50 depending on the position of the threads F1 to Fn in the drop chute 30, between the outlet opening 36 and the gullet section 41, and in the winding spindle section 42 of the winding device 40.

[0065] As can be deduced from Figures 1, 4, 7, or 8, when the threads F1-Fn fall from the inlet opening 37 to the outlet opening 36, the suction device 50 is provided with a pressure range I, preferably having a pressure value D1. A pressure range III, with a pressure value D2, is preferably adjusted when the threads F1-Fn exit the outlet opening 36 and pass through the gullet section 41. In this case, the threads F1-Fn are captured by the thread sucker 110 located at the base of the winding device 40, so that the threads F1-Fn do not accumulate and contaminate the winding device 40. The thread sucker 110 operates to suck up the threads F1-Fn until they are loaded into the winding device 40, wound up, and can form the winded package 100.

[0066] When the thread is placed in the winding device 40, the suction device 50 has a pressure value D3 within pressure range III.

[0067] Figures 2 and 3 schematically show detailed views of the outlet opening 36 of the drop chute 30. A cross-sectional narrowing device 38 is assembled in the drop chute outlet section 33. The cross-sectional narrowing device 38 can reduce the cross-sectional area of ​​the outlet opening 36. By narrowing the cross-sectional area using the cross-sectional narrowing device 38, the suction action of the suction device 50 can be strengthened, especially when yarns F1 to Fn are supplied from the spinning machine 10 to the outlet opening 36 of the drop chute, thereby enabling the yarns F1 to Fn to be supplied precisely and at predetermined locations that can be specified by the suction device 50.

[0068] The cross-sectional narrowing device (Querschnittverengungseinrichtung) 38 has a first wing-shaped flap 34 and a second wing-shaped flap 35, and each wing-shaped flap can be adjusted by an actuator 39 to a cross-sectional narrowing position QE shown in Figure 2 and a cross-sectional widening position QV shown in Figure 3.

[0069] The actuator 39 can be controlled by the winding device 40. The cross-sectional narrowing device 39 and its associated wing-shaped flaps 34 and 35 can also be adjusted manually by the operator.

[0070] The wing-shaped flap 34 has a triangular shape. The cross-sectional wing-shaped flap at the entrance and exit can provide an exit opening even at a narrow cross-sectional position, thereby allowing the yarn to exit in the direction of the winding device 40.

[0071] Figures 4 to 6 schematically show the transfer of threads F1 to Fn via the drop chute 30 using the suction device 50, and in particular a part of the setup process in the winding device 40.

[0072] As can be seen in Figure 4, the suction device 50 has a first suction port 51 located next to the outlet opening 36 of the drop chute 30. A capture basket 54 having two functions is preferably attached to the first suction port 51.

[0073] The capture basket 54 is used to improve the capture of falling synthetic yarns F1-Fn and their supply to the first suction port 51. The capture basket 54 may also have an additional flow deflection plate that can guide the suction flow to the outlet opening 36, thereby additionally drawing in synthetic yarns.

[0074] The first suction port 51 is fluid-tightly connected to the airflow line 55 of the yarn suction line 53 in the suction direction 50. The yarn suction line 53 is connected to a corresponding yarn collection container and a suction device capable of generating a corresponding suction airflow.

[0075] The suction device 50 further has a second suction port 52 in the gullet section 40. The second suction port 52 is located next to the thread cutting device 60. The thread cutting device 60 has the function of cutting the thread coming from the outlet opening 36 when thread breakage occurs in the winding device 40. The second suction port 52 is connected to the thread suction line 53 via a second airflow line 55.

[0076] When an appropriate pressure range I, II, or III is selected by the control and / or operator of the winding device 40, suction flow can be supplied from the thread suction line 53 to the airflow line 55 of the first suction port and the airflow line 55 of the second suction port, respectively, by valves at the branching points.

[0077] In Figure 4, the cross-sectional narrowing device 38 is positioned in a cross-sectional narrowing location where the first wing-shaped flap 34 and the second wing-shaped flap 35 advantageously narrow the outlet opening 36 of the drop chute 30, and as a result, the suction action of the suction device 50 can act more accurately on the synthetic yarns F1 to Fn. In the setup process shown in Figure 4, the suction device 50 is switched to pressure range I.

[0078] In Figure 5, the synthetic yarn F is loaded into at least the gullet section 41 of the winding device 40, which can be seen from the fact that the transfer roller 70 moves from the second gullet 72 to the first gullet 71, and the yarn path of the synthetic yarn F is in contact with the circumferential surfaces of the first gullet, the transfer roller 70, and the second gullet 72. Furthermore, the cross-sectional narrowing device 38 has been moved to the cross-sectional widening position QV, which can be seen from the open wing-shaped flaps 34 and 35. In the loading position of yarn F shown in Figure 5, the suction device 50 is adjusted to pressure range II.

[0079] In Figure 6, the tip thread guide 43 moves from its standby position on the vertical part of the guide rail 74 to the horizontal part of the guide rail 74, and then to the corresponding winding positions W1 to Wn, each containing the first thread F1 to the nth thread Fn, indicating that the synthetic thread F is almost completely loaded into the winding device 40. At this loading position, the suction device 50 is switched to pressure range III.

[0080] Figures 7 and 8 show graphs of the possible first, second, and third pressure values ​​D1, D2, and D3 for the first, second, and third pressure ranges I, II, and III, respectively, as a function of time t. The horizontal axis represents time t in seconds, and the vertical axis represents pressure D in hPa.

[0081] For example, as shown in Figure 7, the first pressure value D1 in pressure range I is the maximum value and, depending on the type F1~Fn and characteristics of the filament thread being drawn in, it can be a constant change with respect to time t and / or a continuously linear increase with respect to time t1~t2 (see dashed line).

[0082] In the case of pressure range II for time t2~t3, the second pressure value D2 is smaller than the first pressure value D1 because the suction device 50 has already captured the threads F1~Fn for the winding device 40, and here we can select a smaller second pressure range II with a smaller pressure value D2. In the third pressure range D3, the threads F1~Fn are loaded into the winding device 40 and are kept constant over time t3~t4, and there can be a third pressure value D3 which can have a value of 0 after t4.

[0083] Figure 8 shows another embodiment of the pressure profile of the suction device 50, where the first pressure value D1 in pressure range I for time t1 to t2 is less than the second pressure value D2 in the second pressure range II, but greater than the third pressure value D3 in the third pressure range D3. Here again, the progression of the relevant pressure values ​​with respect to time t can be provided as constant and / or continuously increasing or decreasing (see dashed line).

[0084] Figure 9 schematically shows, in block diagram form, the methods for supplying and setting up the synthetic yarn in processes S1 to S10.

[0085] In step S1, multiple filaments are extruded from the molten plastic and combined in the spinning apparatus 10 to form synthetic yarns F1 to Fn. In step S2, the synthetic yarns F1 to Fn are supplied at the inlet opening 37 of the drop chute 30, and immediately thereafter, in step S3, the synthetic yarns F1 to Fn are introduced into the drop chute 30.

[0086] Soon, the suction device 50 is switched to a predetermined first pressure range I of a first pressure value D1. Simultaneously, in step S5, the cross-sectional area of ​​the outlet opening 36 is reduced by the cross-sectional narrowing device 38. In pressure range I, the first pressure value D1 can have a value between 550 hPa and 1,850 hPa.

[0087] The synthetic yarns F1 to Fn or multiple synthetic yarns fall along the drop chute 30 in a relatively short time, and as a result, in process S4, the synthetic yarns can be captured in the capture direction 50 by the suction device and the capture basket 54 connected thereto.

[0088] After capture in step S6, in step S7 the outlet opening 36 is enlarged and the cross-sectional narrowing device 38 is moved from the cross-sectional narrowing position QE to the cross-sectional widening position QV. In step S8, the suction device 30, in particular the first suction port 51, is substantially simultaneously provided with a second pressure range II. In pressure range II, the pressure value D2 can be 150 to 155 hPa.

[0089] Next, in step S6, the synthetic yarns F1 to Fn are wound in the winding device 40 to winding points W1 to Wn. After the winding process is started in the winding device 40, a third pressure range III is provided to the suction device 50, and the third pressure range III can have a predetermined value of 0 to 150 hPa. [Explanation of Symbols]

[0090] 1. Melt spinning and winding device 10 Melt spinning apparatus 11 Spinning beam 12. Molten material supply line 14 Spinning Pack 20 Cooling ducts 21 Focusing points 30 Drop Shoot 31 Rectangular section of the drop chute 32. Drop chute trapezoidal section 33 Drop chute exit section 34. First wing-shaped flap 35. Second wing-shaped flap 36 Exit opening 37 Entrance opening 38 Sectional constriction device 39 Actuators 40 Winding device 41 Galette section 42 Winding spindle section 43. Winding spindle 50 Suction device 51 First suction port 52 Second suction port 53 Thread suction line 54 Capture Basket 55 Airflow line 60. Thread cutting device (pulling chopper) 70 Transfer Roller 71. The First Galette 72. The second galette 73 Tip thread guide 74 Guide Rails 75 Guide 100 Wind Package 110 Thread sucking device D1~D3 First, second, and third pressure values DI, DII, DIII: First, second, and third pressure ranges F, F1~Fn: 1st to nth threads FR thread drop direction QE cross-sectional stenosis position QV Cross-sectional enlarged position W1~Wn: Volumes 1 through n

Claims

1. A method for supplying synthetic yarns (F1 to Fn) from a melt spinning and winding apparatus (1) comprising a melt spinning apparatus (10) configured to extrude synthetic yarns (F1 to Fn) and a winding apparatus (20) configured to wind the synthetic yarns (F1 to Fn), wherein the yarns (F1 to Fn) can be supplied from the melt spinning apparatus to the winding apparatus (40) by a drop chute (30), characterized in that the supply is adjustable by a predetermined pressure range (I, II, III) in a suction device (50) of the winding apparatus (40).

2. - When the synthetic yarns (F1 to Fn) are guided from the melt spinning apparatus (10) to the winding apparatus (40), a first pressure range (I) having a predetermined first pressure value (D1) is provided to the suction device (50). - When the synthetic yarn is loaded into the winding device (16), a second pressure range (II) having a predetermined second pressure value (D2) is provided to the suction device (50), and / or - When the synthetic yarn is loaded into the winding device (16), a third pressure range (III) having a predetermined third pressure value (D3) is provided to the suction device (50). The method according to claim 1, characterized in that

3. The first pressure value (D1) has a different value from the second pressure value (D2) and / or the third pressure value (D3), and / or the first pressure value (D1), the second pressure value (D2) and / or the third pressure value (D3) are adjusted based on the denier, composition and / or properties of the synthetic yarn (F1 to Fn). The method according to at least one of claims 1 or 2, characterized in that

4. The method according to at least one of claims 1 to 3, characterized in that the first pressure range (I) is substantially 550 to 850 hPa, the second pressure range (II) is substantially 150 to 550 hPa, and / or the third pressure range (III) is substantially 0 to 150 hPa.

5. The method according to at least one of claims 1 to 4, characterized in that closed-loop control and / or open-loop control in the pressure range is performed manually and / or automatically, the open-loop control in the pressure range (I to III) is controlled over a predetermined period (t1 to t4), and the closed-loop control in the pressure range (I to III) is performed via sensors capable of tracking the position of the yarn in the melt spinning apparatus (10) and the winding apparatus (40).

6. The method according to at least one of claims 1 to 5, characterized in that the open-loop control and / or closed-loop control in the pressure range (I to III) is combined with an automatic, semi-automatic and / or manual mechanism process.

7. The method according to at least one of claims 1 to 6, characterized in that the first pressure range (I), the second pressure range (II), and / or the third pressure range (II) are kept constant with respect to time (t) and / or vary with respect to time.

8. The method according to at least one of claims 1 to 7, characterized in that when the first pressure range (I) is applied, the cross-section of the drop chute (30) is narrowed by the cross-sectional narrowing device (38), and when the second pressure range (II) is applied, the cross-section of the drop chute (30) is widened.

9. In order to supply the aforementioned synthetic yarn, the following steps are taken: - A step (S1) in which multiple filaments are extruded from a molten plastic, and the multiple filaments are combined to form a synthetic yarn (F1 to Fn), - A step (S2) of supplying the synthetic yarn (F1 to Fn) to the inlet opening (37) of the drop chute (30), - Step (S3) of introducing the synthetic yarn into the drop chute, - Step (S4) of providing the suction device (50) with the first pressure range, - A step (S5) to reduce the cross-sectional area of ​​the outlet opening (36) of the drop chute, - A step (S6) in which the synthetic yarn is captured by the suction device (50), - A step (S7) to enlarge the outlet opening (36) of the drop chute, - Step (S8) of providing the suction device (30) with the second pressure range (II), - Step of setting the synthetic yarn in the winding device (S9), - Step (S10) of providing the suction device (50) with the third pressure range (III) The method according to at least one of claims 1 to 8, characterized in that the following is performed.

10. A winding device (40) for winding synthetic yarn from a melt spinning device (10), the winding device (40) is configured to perform the method according to at least one of claims 1 to 9.

11. The winding device according to claim 10, wherein the drop chute (30) belonging to the winding device has a cross-sectional narrowing device (38) formed at the outlet opening (36) of the drop chute, the cross-sectional narrowing device (39) has wing-shaped flaps (34, 35), the wing-shaped flaps (34, 35) are articulatedly attached to the outlet opening (26) of the thread drop chute (30), and are movable by manual and / or actuator (39) between a cross-sectional narrowing position (QE) for narrowing the outlet opening (26) and a cross-sectional widening position (QV) for opening the outlet opening (26).

12. The winding device according to at least one of claims 10 or 11, characterized in that the suction device (50) has a first suction port (51) connectable to a capture basket (54), and / or the first suction port has an acceleration nozzle.

13. The winding device according to at least one of claims 10 to 12, characterized in that the capture basket (54) is set to bypass the airflow of the first intake port.

14. The winding device according to at least one of claims 10 to 13, characterized in that the suction device (50) has a second suction port (52) which cooperates with a yarn cutting device (60) set to cut the synthetic yarn.

15. The winding device according to at least one of claims 10 to 14, characterized in that the airflow bypass line (55) is detachably connectable to the first suction port (51) of the suction device and / or the second suction port of the suction device adjacent to the thread cutting device (60).

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