Melt spinning apparatus for producing melt-spun filaments

Abstract

The invention relates to a melt spinning device for producing melt-spun filaments, in particular filaments comprising polyamide, which release monomer and / or oligomer compounds during extrusion, having a spin beam for extrusion and a cooler for cooling the synthetic filaments, an extrusion zone being formed between the cooler and the spin beam via which the filaments are fed to the cooler, a guide ring for feeding the filaments into the cooler and for collecting monomer and / or oligomer compounds which can form deposits being located at an inlet opening of the cooler, the guide ring having a removal device for removing deposits which acts on predetermined sides of the guide ring; and to a related method for producing melt-spun filaments, in particular filaments comprising polyamide, which release monomer and / or oligomer compounds during extrusion, which can form deposits on internal components of the melt spinning device.

Description

Technical Field

[0001] This invention relates to a melt spinning apparatus for producing melt-spun filaments, having a cleaning device for removing deposits, and to a related method. Background Technology

[0002] When synthetic filaments are produced from monomers and / or oligomer compounds, particularly PA6.6, monomers are particularly formed that accumulate and deposit on melt spinning equipment, making it difficult and / or even impossible to continue producing synthetic yarns without loss of quality.

[0003] Currently, even after a very short time, the production process must be interrupted, and the parts of the melt spinning equipment contaminated with deposits must be cleaned and / or replaced.

[0004] Without cleaning the internal components and guide rings beneath the spinneret in the cooler, process stability may only last a few minutes. This could necessitate a production interruption. An interruption means that filaments cannot be spun or extruded from the melt spinning equipment. Summary of the Invention

[0005] Therefore, one object of the present invention is to provide a melt spinning apparatus for producing melt-spun filaments, which allows for continuous production within a predetermined time without interruption for cleaning contaminated components.

[0006] Another object of the present invention is to provide a method for producing melt-spun filaments, which allows for the cleaning of contaminated parts of a melt-spinning apparatus without interrupting extrusion.

[0007] Regarding melt spinning equipment, according to the present invention, this objective is achieved by a melt spinning apparatus.

[0008] According to one aspect of the invention, a melt spinning apparatus is provided for producing melt-spun filaments, particularly filaments comprising polyamides that release monomers and / or oligomer compounds during extrusion. The melt spinning apparatus has a spinning chamber for extrusion and a cooler for cooling the synthesized filaments, wherein an extrusion zone is formed between the cooler and the spinning chamber, in which the filaments are fed to the cooler. A guide ring for feeding the filaments into the cooler and for collecting monomers and / or oligomer compounds that may form deposits is located at the inlet opening of the cooler. The guide ring has a cleaning device for removing deposits, which acts on a predetermined side of the guide ring.

[0009] This melt spinning equipment is preferably used to produce filaments made from polyamide melt. When polyamide melt is extruded, monomers and oligomer compounds are generated, which can be problematic during filament production and can deposit on the internal components of the melt spinning equipment. In particular, the deposition of monomers and oligomer compounds on internal components of the melt spinning equipment (such as guide rings) negatively impacts the filament production process.

[0010] Therefore, the deposits generated on the melt spinning equipment must be cleaned regularly.

[0011] Using the melt spinning apparatus according to the invention, deposits can be easily and simply removed by a cleaning device acting on the guide ring. The cleaning can be performed without interrupting the extrusion process. That is, deposits can be removed without interrupting melt-spun filament production. Therefore, filaments can be produced over a longer period without interrupting the melt spinning process or extrusion, wherein deposits can be removed during extrusion.

[0012] The advantage of this is that components, especially guide rings, can be cleaned without interrupting the extrusion process, and equivalent filaments can also be produced during the cleaning process.

[0013] The cleaning device is spaced far enough from the filament bundle to avoid obstructing the bundle in the direction of filament travel. Therefore, the cleaning device can also be used to clean the filament bundle during extrusion.

[0014] According to a preferred embodiment of the melt spinning apparatus, the cleaning device has mechanical, thermal and / or liquid action elements for removing deposits, wherein the action elements interact with the side of the guide ring so that the action elements can remove deposits in an adjustable and / or controlled manner.

[0015] The cleaning device has mechanical, thermal, and / or liquid actuating elements for removing deposits. The cleaning device will be designed based on the actuating elements used.

[0016] The actuating element can act on the side of the guide ring, wherein the side involves the inside and / or outside of the guide ring.

[0017] The actuating element acts on the side, allowing it to remove deposits present on the side of the guide ring.

[0018] Oligomers and / or monomeric compounds are specifically deposited on the inner surface of the guide ring.

[0019] Depending on the type, the actuating element can also act on the outside of the guide ring side.

[0020] In another preferred embodiment, the cleaning device is movable relative to the guide ring, and / or the guide ring is movable relative to the cleaning device, and / or the cleaning device interacts with a sensor for detecting deposits on the guide ring so that the cleaning device can be activated when deposits are detected.

[0021] According to a particularly preferred embodiment of the melt spinning apparatus, the cleaning device interacts with the controller of the melt spinning apparatus, wherein the controller is connected to the cleaning device via a communication line so that the controller of the melt spinning apparatus controls the cleaning device and / or adjusts it using data determined by sensors.

[0022] The cleaning device is connected to the controller of the melt spinning equipment so that it can be activated by the controller. The controller can control the cleaning device at predetermined time intervals so that it is activated from a certain point in time and for a predetermined duration.

[0023] This duration can be stored in the controller so that the cleaning device can remove the generated deposits after a predetermined time.

[0024] In addition and / or optionally, the cleaning device can be adjusted using data collected by sensors.

[0025] The sensor is designed to detect deposits on the guide ring. When the deposits exceed a predetermined value, a cleaning device can be activated, thus adjusting the activation of the cleaning device, for example, by regulating the amount of deposits.

[0026] According to a preferred embodiment of the melt spinning equipment, the mechanical action element of the cleaning device has a vibration generator that vibrates the guide ring at a predetermined frequency via a vibration transmission element, thereby shaking off deposits on the guide ring, wherein the vibration generator acts on the outer side of the guide ring side.

[0027] Different functional elements for removing deposits formed on the guide ring are proposed.

[0028] According to one embodiment, the actuating element has a mechanical actuator. The mechanical actuator can be, for example, a vibration generator that produces a predetermined frequency, causing the deposits to be shaken off rather than adhered to the guide ring. This shaking off occurs during the extrusion process.

[0029] The chosen frequency ensures that it acts only on the guide ring and is not transmitted to the filament. Furthermore, guide rings can be installed accordingly so that the vibration acts only on the guide rings and does not propagate within the melt spinning equipment.

[0030] The accumulated monomers are sucked away and / or collected by a suitable device so that the monomers do not have any further negative impact on the extrusion process.

[0031] According to another embodiment of the melt spinning equipment, the mechanical action element of the cleaning device has a scraping device, wherein the scraping device acts on the inside of the guide ring side so as to remove deposits on the guide ring side, wherein the guide ring and / or the scraping device are movable relative to each other.

[0032] According to another embodiment of the melt spinning apparatus, a scraping device may additionally or optionally act on the guide ring. The scraping device may be, for example, a scraper and / or a brush, which acts on the inner side of the guide ring to remove deposits on the inner side of the guide ring.

[0033] The cleaning can be performed during filament extrusion without affecting the quality of the filament. Furthermore, the doctor blade or its scraping device can move along the guide ring, and / or the guide ring can move along the scraping device.

[0034] According to another embodiment of the melt spinning equipment, the heat-acting element of the cleaning device has heating wires, particularly electric heating wires with resistors, and / or convection lines for conducting heat transfer medium to guide heat flow around the guide ring to heat the guide ring by contact with the side of the guide ring, and / or a heat radiation device, particularly a laser, which is designed to heat the inner surface of the side of the guide ring, wherein the heat radiation device is adjustable relative to the guide ring and / or fixed at the guide ring.

[0035] Alternatively, the cleaning device can also be formed of a thermally acting element. For thermally acting elements, heating wires fixed to a guide ring are particularly suitable.

[0036] Optionally and / or additionally, a thermal radiation device, such as a laser arranged on the guide ring, may be used. The thermal radiation device may be fixedly arranged in a fixed position relative to the guide ring. The thermal radiation device may also be designed as a point radiator facing the inner surface of the guide ring side and movably held along the side, such that the radiation emitted by the thermal radiation device can be directed towards the inner surface of the guide ring side, particularly for removing deposits.

[0037] According to a specific embodiment of the melt spinning equipment, the liquid action element of the cleaning device has a steam device for distributing cleaning steam to the inner side of the guide ring, and / or a spraying device for spraying cleaning liquid to the inner side, wherein the steam device and / or spraying device are movable and / or fixed on the guide ring.

[0038] By utilizing the liquid-acting element of the cleaning device, a steam device and / or a jetting device can be provided, which evaporates and jets liquid respectively, to remove deposits on the guide ring.

[0039] The steam device and / or jetting device can be movably arranged relative to the guide ring, and / or the guide ring can be movably arranged relative to the steam device and jetting device. Furthermore, suitable arrangements can be designed to allow the steam device and jetting device to be fixed on the guide ring, such that steam and cleaning liquid can be sprayed out over the entire circumference of the guide ring.

[0040] Deposits on the guide rings are removed using steam or liquid, and this removal should and can be carried out, particularly during the extrusion process.

[0041] According to the present invention, this objective is achieved by one of the methods described above.

[0042] According to another aspect of the invention, a method for producing melt-spun filaments, particularly filaments comprising polyamide, is provided, wherein monomers and / or oligomer compounds are released during extrusion, which may form deposits on internal components of the melt-spinning apparatus according to the aforementioned method, wherein the filaments are extruded in the spinning chamber of the melt-spinning apparatus, wherein the filaments are cooled in a cooler, and wherein a cleaning device is located at the inlet opening of the cooler, the cleaning device being designed to remove deposits on the guide ring at the inlet opening of the cooler during filament extrusion.

[0043] The method according to the invention can also be used to remove deposits during filament extrusion.

[0044] There is no need to interrupt the melt spinning process. Interrupting the melt spinning process will cause the melt to cool, which will lead to blockage or clogging of the spinning components in the spinning box used to extrude the filaments.

[0045] Using this method, deposits formed on the guide ring can be removed and loosened even during filament extrusion.

[0046] Therefore, the size of the cleaning device is designed so that it does not engage with the filament bundle during extrusion, but only acts on the guide ring.

[0047] According to another embodiment of the method, the deposits on the guide ring are removed without interrupting the filament extrusion, wherein the filaments are not affected by the removal.

[0048] A particular advantage of the method used to remove deposits on the guide ring is that it can be carried out without interrupting filament extrusion. This means that filament production can continue during cleaning without affecting filament quality. Quality is significantly improved by cleaning deposits on the guide ring, and since cleaning does not require interruption, other drawbacks such as melt clogging of the spinning assembly can be avoided. Attached Figure Description

[0049] The melt spinning apparatus and related methods according to the present invention will be explained in more detail below with reference to the accompanying drawings, using some exemplary embodiments of the melt spinning apparatus and related methods according to the present invention.

[0050] in:

[0051] Figure 1 A cross-sectional view of an exemplary embodiment of a melt spinning apparatus having a cleaning device and a cooler according to the present invention is shown schematically.

[0052] Figure 2 A schematic diagram showing a detailed view of the cooler inlet opening, with a first exemplary embodiment of the purging device shown at the inlet opening.

[0053] Figure 3 A schematic diagram of the cooler inlet opening is shown in detail, wherein a second exemplary embodiment of the purging device is shown at the inlet opening.

[0054] Figure 4 A schematic diagram showing a detailed view of the cooler inlet opening, with a third exemplary embodiment of the purging device shown at the inlet opening on one side.

[0055] Figure 5 A schematic diagram showing a detailed view of the cooler inlet opening, with a fourth exemplary embodiment of the cleaning device shown at the inlet opening on the other side.

[0056] Figure 6 A schematic diagram showing a detailed view of the cooler inlet opening, with a fifth exemplary embodiment of the purging device shown at the inlet opening on one side, and

[0057] Figure 7 A schematic diagram of the cooler inlet opening is shown, with a sixth exemplary embodiment of the cleaning device shown at the inlet opening on the other side.

[0058] List of reference numerals

[0059] 1. Melt spinning equipment

[0060] 2 Spinning box

[0061] 20 Installation space

[0062] 22 Spinning board

[0063] 24 Spinning Components

[0064] 3 Sensors

[0065] 30 communication lines

[0066] 31 Controller

[0067] 4. Cooler

[0068] 40 guide ring

[0069] 41. Air grille (ventilation)

[0070] 42. Outlet cylinder (airtight)

[0071] 43. Entrance opening

[0072] 44. Exit opening

[0073] 45 Side View

[0074] 46. ​​Air ducts

[0075] 48 Gas supply pipeline

[0076] 47. Circular support

[0077] 49 Separated grilles

[0078] 5 Extrusion Zone

[0079] 50 Seals

[0080] 6. Degassing device

[0081] 60 Degassing Chamber

[0082] 62 Connecting Section

[0083] 70 Sediments

[0084] 8. Cleaning device

[0085] 80. Functional element

[0086] 81 Vibration Generator

[0087] 82 Vibration Transmission Components

[0088] 83 Vibration storage device (spring)

[0089] 84 Scraping device

[0090] 85 Gears

[0091] 86 Gear Shaft

[0092] 87 Energy Supply Line

[0093] 88 Thermal Radiation Device

[0094] 89 heating wire

[0095] 9 Current Source

[0096] 90 Steam Unit

[0097] 91 Supply Line

[0098] 92 Spraying device

[0099] R Rotary device

[0100] F filament Detailed Implementation

[0101] Figure 1 A top view schematically illustrates a first exemplary embodiment of a melt spinning apparatus 1 having a cleaning device 8 according to the invention.

[0102] With the help of the cleaning device 8, the melt spinning equipment 1, especially the guide ring 40, can be cleaned particularly effectively even during the extrusion of synthetic yarns.

[0103] During the process, the guide ring 40 is inaccessible. The guide ring 40 can be automatically cleaned by means of the cleaning device 8.

[0104] Cleaning with the cleaning device 8 can be performed by mechanical, thermal, and / or liquid action elements 80. The size and arrangement of the action elements 80 are designed so that they do not interfere with the extrusion of the filament.

[0105] Figure 1 An exemplary embodiment of a melt spinning apparatus 1 having a cleaning device 8 according to the invention is shown in a schematic cross-sectional view.

[0106] The cleaning device 8 according to the invention acts on the guide ring 40. The guide ring 40 is disposed at the inlet opening 43 of the cooler 4 for cooling the extruded filament F.

[0107] The cooler 4 also has an outlet opening 44 at the end opposite to the inlet opening 43. The outlet opening 44 is defined by an airtight outlet cylinder 42. An air supply duct 48 is provided in the area of ​​the outlet opening 44 or the outlet cylinder 42, which surrounds the outlet cylinder 42 and directs the cooling air to the air duct 46 surrounding the air grille 41.

[0108] The air grille 41 is permeable and directs cooling air radially toward the filament F. The sensor 3 can be positioned below the guide ring 40 in the filament travel direction. The sensor 3 can detect any deposits 70 that may be present on the guide ring 40.

[0109] Sensor 3 is connected to the controller 31 of the melt spinning equipment via communication line 30.

[0110] The data determined by sensor 3 can be used to adjust the cleaning device 8.

[0111] In an exemplary embodiment not shown, sensor 3 may also be absent, such that the cleaning device is controlled using only predetermined and previously determined data, so that the cleaning device 8 is activated only at predetermined time intervals.

[0112] from Figure 1 It can also be seen that a separation grille 49 is provided between the air duct 46 and the air supply duct 48. The separation grille 49 can be used to capture waste and / or filament residue to keep the air supply duct 48 unobstructed.

[0113] from Figure 1 It can also be seen that the melt spinning equipment has a spinning box 2 above the cooler 4. The spinning box 2 has an installation space 20 for mounting the spinning assembly 24. Using the spinning assembly 24, the melt is extruded through the spinning plate 22 to form filaments F, which are guided toward the cooler 4.

[0114] An extrusion zone 5 is defined between the spinning plate 22 and the guide ring 40 of the cooler 4.

[0115] The extrusion zone 5 is connected to the degassing device 6 by means of fluid transport. The degassing device has a degassing chamber 60 and a connecting section 62. The connecting section 62 is in fluid transport contact with the extrusion space 5.

[0116] Sediments and monomers 70 will be collected in degassing chamber 60 so that they do not affect the quality of filament F.

[0117] The cleaning device 8 has an actuating element 80 that can act on the guide ring 40 to remove any deposits 70 that may form on the guide ring 40.

[0118] Figures 2 to 7 Different embodiments of the cleaning device 8 and the associated actuating element 80 are shown respectively. Figures 2 to 7 What they have in common is the area of ​​the cooler 4, and the cooler 4 is shown together with the air grille 41 and the associated air duct 46. Especially... Figures 4 to 7 In the illustration, the cleaning device 8 and the associated active element 80 are shown in exaggerated form, with only the working principle shown.

[0119] Furthermore, a guide ring 40 is shown at the inlet opening 44. The guide ring has sides on its inner and outer sides. Deposits can form, particularly on the inner side of the guide ring 40.

[0120] The guide ring 40 is positioned on the air grille 41 by an annular bracket 47. In addition, a seal 50 is arranged at the annular bracket 47 to seal the air duct 46 and the breathable air grille 41 against each other.

[0121] The actuating element 80 of the cleaning device 8 acts on the guide ring 40. Figure 2In this process, the active element 80 is a vibration transmission element 82, which transmits the vibration from the vibration generator 81 to the guide ring 40.

[0122] exist Figure 2 The image shows a cleaning device 8 with a mechanically acting element 80.

[0123] The vibration generator 81 can be an oscillator that excites the vibration transmission element 82 at a predetermined frequency. The vibration or frequency generated by the vibration generator 81 is transmitted to the guide ring 40 through the vibration transmission element 82. In order to avoid having vibration generators 81 on both sides of the guide ring 40, a vibration memory 83, for example in the form of a spring, can be provided on the other side, which can be used to elastically transmit the frequency to both sides of the guide ring 40.

[0124] The vibration creates a cleaning effect on the guide ring 40. The selected vibration sufficiently excites the guide ring 40 to shake off and remove the deposits 70 formed there. The frequency setting ensures that the removal of deposits 70 from the guide ring 40 does not negatively affect the extrusion of the filament F or the cooling of the filament F in the cooler 4.

[0125] The deposits 70 on the guide ring 40 can also be removed during the extrusion of the filament F without negatively affecting the filament quality.

[0126] This means that the deposits 70 on the guide ring 40 can be removed even during the extrusion of the filament F using the cleaning device 8.

[0127] Figure 3 A mechanically acting element 80 is also shown. Figure 3 An exemplary embodiment of the cleaning device 8 shown has a scraping device 84 as a mechanically acting element 80. The scraping device 84 abuts against the inside of the side 45 of the guide ring so that deposits on the guide ring 40 can be scraped or brushed off.

[0128] The scraping device 84 may have a scraper and / or a brush. Any deposits 70 that form can be scraped off with the scraping device 84.

[0129] exist Figure 3 In the exemplary embodiment shown, the scraping device 84 is fixedly arranged on one side of the guide ring 40. The guide ring can be moved relative to the scraping device by a gear system (in the form of gear 85 and gear shaft 86) and along the scraping device 84, such that the inner side of the side 45 of the guide ring 40 is guided along the scraping device 84.

[0130] In an embodiment not shown, the scraping device 84 is movable about the circumference of the guide ring 40, such that the brush or scraper of the scraping device 84 is movable relative to the guide ring 40.

[0131] Figure 4 Embodiments of the heat-acting element 80 are shown on the left side of the device 4 and the right side of the cooling cylinder 4 in the reading direction, separated by a symmetry axis indicated by a dotted line.

[0132] On the left side of the reading direction, the heating element 80 has a heating wire 89 or heating band 89, which can be heated by current from the current source 9 via the energy supply line 87.

[0133] However, heating wire 89 can also be a convection line (not shown) through which the heat transfer medium can be conducted to guide ring 40.

[0134] Both the heating wire 89 and the convection line are in contact with the guide ring 40 so that heat can be transferred through contact.

[0135] exist Figure 5 To the right of the reading direction, a heat radiation device 88 is shown as a heating element 80. Using the heat radiation device 88, the guide ring 40 can be heated by heat radiation, such as laser light, or by electromagnetic waves. The heat radiation device 88 is connected to energy for driving the heat radiation device 88 via an energy supply line 87 and can be guided, for example, to the inside of the guide ring via a rotating device R.

[0136] However, the heat radiation device 88 may also be fixed, and the guide ring 40 may be movable relative to the heat radiation device 88.

[0137] Figure 6 and Figure 7 Different exemplary embodiments of the clearing device 8 and the actuating element 80 are shown in the first and second image halves, and separated by a symmetry axis in the form of a dashed line, as shown in Figure 4 and Figure 5 In the middle, they are on the left and right sides respectively, in the direction of reading.

[0138] Figure 6 and Figure 7 A cleaning device 8 with a liquid-acting element 80 is shown. On the left side in the reading direction, the acting element 80 is a steam device 90 that can transfer liquid in the form of steam to a guide ring 40. Using steam, an acting element 80 is generated, which can also remove deposits 70 formed inside the guide ring 40.

[0139] exist Figure 6 In the form shown, the steam device 90 can be moved relative to the guide ring 40 by means of the rotating device R.

[0140] However, the steam device 90 may also be fixedly arranged at a point on the guide ring 40, and the guide ring 40 may be movably mounted relative to the steam device 90, for example, by means of... Figure 3The gear system shown is used to remove deposits 70.

[0141] exist Figure 7 To the right of the center of gravity line, another exemplary embodiment of the cleaning device 8 having an active element 80 is shown.

[0142] Figure 7 An exemplary embodiment of the cleaning device 8 shown is a spraying device 92, which allows the liquid action element 80 to be applied to the guide ring 40.

[0143] The spraying device 92 is also movable inside the guide ring via the rotating device R. Deposits inside the guide ring 40 can also be removed by the liquid sprayed by the spraying device 92.

[0144] Figures 1 to 7 What all the cleaning devices 8 shown have in common is that, although the actuating elements 80 are different, they can remove the deposits 70 on the guide ring 40 without interrupting the extrusion of the filament F.

[0145] Conversely, the deposits can be removed using the cleaning device 8 without causing a loss of mass in the extruded filament F.

Claims

1. A melt spinning apparatus (1) for producing melt-spun filaments (F), particularly filaments comprising polyamides, wherein the filaments release monomers and / or oligomer compounds during extrusion, the melt spinning apparatus having a spinning chamber (2) for extrusion and a cooler for cooling the synthesized filaments (F), wherein, An extrusion zone (5) is formed between the cooler (4) and the spinning box, through which the filament (F) is supplied to the cooler (4). A guide ring (40) is positioned at the inlet opening (43) of the cooler (4). The guide ring (40) is used to supply the filament to the cooler (4) and to collect monomers and / or oligomer compounds that can form deposits. The guide ring (40) has a cleaning device (8) for removing the deposits. The cleaning device (8) acts on a predetermined side (45) of the guide ring.

2. The melt spinning equipment (1) according to claim 1, characterized in that, The cleaning device (8) has a mechanical, thermal and / or liquid actuating element (80) for removing deposits, wherein the actuating element (80) interacts with the side surface (45) of the guide ring (40) such that the actuating element (80) can remove the deposits in an adjustable and / or controlled manner.

3. The melt spinning apparatus according to at least one of claims 1 or 2, characterized in that, The cleaning device (8) is movable relative to the guide ring (40), and / or the guide ring (40) is movable relative to the cleaning device (8), and / or the cleaning device (8) interacts with a sensor for detecting deposits on the guide ring so as to activate the cleaning device (8) when deposits are detected.

4. The melt spinning apparatus according to at least one of the preceding claims, characterized in that, The cleaning device (8) interacts with the controller (31) of the melt spinning equipment (1), wherein the controller (31) is connected to the cleaning device via a communication line (30), such that the controller (31) of the melt spinning equipment (1) controls the cleaning device (8) and / or adjusts it using data determined by the sensor (3).

5. The melt spinning apparatus according to at least one of the preceding claims, characterized in that, The mechanical action element (80) of the cleaning device (8) has a vibration generator (80) that causes the guide ring (40) to vibrate at a predetermined frequency via a vibration transmission element (82), thereby shaking off deposits on the guide ring, wherein the vibration generator (80) acts on the outside of the side (45) of the guide ring (40).

6. The melt spinning apparatus according to at least one of the preceding claims, characterized in that, The mechanical actuating element (80) of the cleaning device (8) has a scraping device (84) that acts on the inside of the side surface (45) of the guide ring (40) to remove deposits on the side surface (45) of the guide ring, wherein the guide ring (40) and / or the scraping device (84) are movable relative to each other.

7. The melt spinning apparatus according to at least one of the preceding claims, characterized in that, The heat-acting element (80) of the heat-removing device (8) has a heating wire (89), particularly an electric heating wire with a resistor, and / or the heat-acting element (80) has a convection line for conducting the heat transfer medium to guide the heat flow around the guide ring (40) to heat the guide ring (40) by contact with the side surface (45) of the guide ring, and / or the heat-acting element (80) has a heat radiation device (88), particularly a laser, which is designed to heat the inner surface of the side surface (45) of the guide ring, wherein the heat radiation device (88) is adjustable relative to the guide ring (40) and / or fixed at the guide ring.

8. The melt spinning apparatus according to at least one of the preceding claims, characterized in that, The liquid-acting element (8) of the cleaning device (8) has a steam device (90) for distributing cleaning steam to the inside of the side (45) of the guide ring (40), and / or the liquid-acting element (8) has a spraying device (92) for spraying cleaning liquid onto the inside of the side (45), wherein the steam device and / or the spraying device are movable and / or fixed on the guide ring.

9. A method for producing melt-spun filaments (F), particularly polyamide-containing filaments, wherein the filaments release monomers and / or oligomer compounds during extrusion, the monomers and / or the oligomer compounds being capable of forming deposits (70) on internal components (4, 40) of a melt-spinning apparatus (1) according to at least one of claims 1 to 8, wherein, The filament (F) is extruded in the spinning box (2) of the melt spinning apparatus (1), wherein the filament (F) is cooled in a cooler (4), wherein a cleaning device (8) is positioned at the inlet opening of the cooler, the cleaning device being designed to remove deposits on the guide ring at the inlet opening (43) of the cooler (4) during the extrusion of the filament.

10. The method according to claim 9, characterized in that, The deposits on the guide ring (40) are removed without interrupting the extrusion of the filament (F), wherein the filament (F) is unaffected by the removal.

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