A spinning nozzle

Abstract

The application relates to the technical field of spinning production, improves the problem that the broken yarns in a spinning duct are prone to winding on production equipment, and discloses a spinning duct which comprises a hollow duct body and a spinneret plate installed at the top of the duct body, a plurality of spinneret holes are arranged on the spinneret plate in an interval, and a yarn outlet is formed through the lower end of the duct body; a baffle is movably connected to the duct body at the yarn outlet, a yarn channel is formed in the baffle, and a locking piece for locking the baffle to cover the yarn outlet is arranged on the duct body. When the yarns are broken, the upper yarns will fall on the baffle, and the application can reduce the possibility that the uncombed yarns directly fall on the lower winding equipment and cause winding failure of the winding equipment.

Description

Technical Field

[0001] This application relates to the technical field of spinning production, and in particular to a spinning tunnel. Background Technology

[0002] Melt spinning is the main production method for synthetic fibers such as polyester, nylon, and acrylic. The melt spinning process involves first heating and melting the polymer, then extruding the melt through tiny spinneret holes on a spinneret under high pressure. The melt cools and solidifies in the air to form fibers, which are then drawn and wound into shape.

[0003] During the filament curing process, the filaments must pass through a spinning tunnel. The spinning tunnel maintains stable conditions such as temperature, humidity, and ventilation to ensure stable filament formation. The spinning tunnel is hollow, penetrating both ends, with the spinneret located at the top and the winding device below. However, during spinning, air or water may enter the spinning box, causing air bubbles in the ejected filaments and creating stress concentration points. These stress concentration points are prone to breakage due to tension. Other issues such as excessively low temperature or humidity, severe static electricity, and machine wear can also lead to filament breakage.

[0004] Because the bottom of the existing spinning channel is open, when the filament breaks, the lower filament continues to be wound up, but the upper filament continues to hang down. If it is not combed in time, the upper filament is easy to get tangled in the winding equipment, which will not only cause equipment failure, but also reduce production efficiency. Summary of the Invention

[0005] In order to improve the defect that broken filaments in the spinning tunnel are easily entangled in the production equipment, this application provides a spinning tunnel.

[0006] This application provides a spinning tunnel, which adopts the following technical solution:

[0007] A spinning duct includes a hollow duct body and a spinneret installed on the top of the duct body. The spinneret has a plurality of spinneret holes arranged at intervals. A filament outlet is formed through the lower end of the duct body. A baffle is movably connected to the duct body at the filament outlet. A filament channel is formed on the baffle. A locking member is provided on the duct body for locking the baffle to cover the filament outlet.

[0008] By adopting the above technical solution, the polymer is heated and melted, then ejected from the spinneret under high pressure to form filaments. A closable baffle is installed at the filament exit, with a filament channel only in the middle of the baffle for the filaments to pass through. When a filament breaks, the upper end falls onto the baffle, reducing the possibility of uncombed filaments falling directly onto the winding equipment below, causing entanglement and malfunction. The baffle is movable, allowing the filament exit to be opened, facilitating the handling and sorting of broken filaments by workers, thus improving production efficiency.

[0009] Optionally, the side of the baffle away from the wire outlet is provided with several protrusions.

[0010] By adopting the above technical solution, since the upper end of the broken filament will continue to spin, when the amount of filament spinning is large or the surface of the baffle is relatively smooth, the filament on the baffle may slip off from the filament channel. The protruding post can block the filament, reducing the possibility that the filament will continue to slip off and become entangled in the winding equipment.

[0011] Optionally, the baffle is hinged to the tunnel body, and the side of the tunnel body that is hinged to the baffle is set as a first side plate. The first side plate has a plurality of wire-laying holes. After the baffle rotates toward the first side plate, the protrusion is inserted into the wire-laying hole. The first side plate is connected to an air extraction pipe that communicates with the wire-laying hole. The end of the air extraction pipe away from the first side plate is connected to an air pump.

[0012] By adopting the above technical solution, some filaments may be cut off at both ends and remain on the baffle. Because the surface of the baffle has multiple protrusions, the remaining filaments are difficult to clean. By directly rotating the baffle towards the first side plate, the protrusions drive the broken filaments to be inserted into the filament discharge hole. The air pump can directly suck the filaments out of the tunnel body, so as to avoid the possibility of the remaining filaments falling into the winding equipment during the spinning process, thus ensuring the quality of spinning and winding.

[0013] Optionally, a filter element is provided inside the air extraction pipe.

[0014] By adopting the above technical solution, when the broken filaments are sucked in by the vacuum pump, they may be drawn into the vacuum pump and cause the vacuum pump to malfunction. The filter element traps the filaments inside the filter element, which can extend the service life of the vacuum pump.

[0015] Optionally, the inner wall of the wire-laying hole is provided with a friction element, and the protrusion becomes electrified after rubbing against the friction element.

[0016] By adopting the above technical solution, melt spinning is a type of electrostatic spinning. The formation of the filament is achieved by a high-voltage power supply that induces charges on the solution. Because the curvature of the solution tip inside the spinneret is the greatest, as the charge increases, the molecules in the solution repel each other to form Taylor cones, which are then ejected from the filament discharge hole. Therefore, the filament itself carries a partial positive charge. The baffle rotates towards the first side plate until the protrusion enters the filament discharge hole, and then rotates again to disengage the protrusion from the filament discharge hole. While the blower cleans the broken filament, the friction element can also charge the protrusion. The friction element can be made of fur and the protrusion can be made of rubber, thus making the protrusion negatively charged. Therefore, when the filament breaks, the swaying filament at the top will be attracted by the protrusion, further reducing the possibility of broken filaments entangled in the winding equipment.

[0017] Optionally, an electroscope is provided on the inner wall of the tunnel body. The electroscope is used to monitor the charge on the protrusion. The baffle is connected to a driving member that drives the baffle to rotate. The driving member is electrically connected to the electroscope.

[0018] By adopting the above technical solution, when the spinning operation is normal, the electroscope can continuously monitor the charge on the protrusion. When the charge is less than a specified value, the electroscope sends a signal to the drive component through a control unit, causing the drive component to drive the baffle to rotate until the protrusion enters the yarn discharge hole with the friction element and then disengages, so that the protrusion rubs against the friction element to increase the charge, thereby ensuring that the yarn can be adsorbed on the protrusion when it suddenly breaks.

[0019] Optionally, a plurality of the aforementioned protruding pillars are arranged, and the electroscope includes a rotating shaft hinged to the tunnel body, an electroscope rod disposed on the rotating shaft, and an elastic element that drives the electroscope rod to rotate in the direction of the inner wall of the tunnel body. The rotating shaft is provided with a flipping part, and when the baffle rotates in the direction of the wire outlet, it can press against the flipping part and rotate the electroscope rod to contact the protruding pillars.

[0020] By adopting the above technical solution, the electroscope can be set as a non-contact electroscope. However, when monitoring the electrical charge of the protrusions, the non-contact electroscope may be affected by the wires, which also carry electrical charge. Preferably, the electroscope is set as a contact type, with the electroscope rod contacting the protrusions, which can improve the accuracy of monitoring. When the baffle rotates towards the wire outlet, the baffle gradually approaches and presses against the flipping part, thereby causing the rotating shaft to rotate towards the baffle, which in turn drives the electroscope rod to rotate until it simultaneously contacts all the protrusions in the array. When the baffle rotates away from the wire outlet, the elastic element can drive the electroscope rod to disengage from the protrusions and the baffle, without the need for additional operation by personnel, making it automatic and efficient.

[0021] Optionally, the tunnel body is provided with a plurality of metal rods arranged laterally, the length direction of the metal rods being consistent with the arrangement direction of the spinnerets.

[0022] By adopting the above technical solution, a metal rod is set in the tunnel body. When the filament passes through the tunnel body, it rubs against the metal rod, which can increase the positive charge on the filament. This further increases the possibility that the filament will be attracted by the negatively charged protrusion when it breaks, so that it will not fall onto the winding equipment.

[0023] Optionally, multiple metal rods are arranged at intervals, and the vertical projection of each metal rod overlaps with the spinneret hole.

[0024] By adopting the above technical solution, the filaments are wrapped around multiple metal rods, which can further increase the charge on the filaments, thereby increasing the adsorption effect of the filaments; the metal rods can apply a certain pressure to the filaments, and when the filaments are too thin or have stress concentration points inside, they are easily pulled and broken, thereby screening out poorly formed filaments and improving the quality of the spun products.

[0025] Optionally, the tunnel body is provided with an electrostatic eliminator below the baffle.

[0026] By adopting the above technical solution, the filament itself will carry a partial positive charge when it is formed, and the charge will be further increased by the metal rod. Excessive static electricity will reduce the quality of the spun products. When the workshop is too dry, static spark accidents may also occur. Before the filament is wound up through the tunnel, the static electricity of the filament can be eliminated by the static eliminator, thereby reducing the possibility of accidents.

[0027] In summary, this application includes at least one of the following beneficial effects:

[0028] 1. An openable and closable baffle is installed at the filament outlet of the tunnel body. A filament channel is opened only in the middle of the baffle for the filament to pass through. When the filament breaks, the upper filament will fall onto the baffle, reducing the possibility that uncombed filaments will fall directly onto the winding equipment below, causing the winding equipment to become entangled and malfunction.

[0029] 2. By using friction components to make the protrusions negatively charged and by using metal rods to increase the positive charge on the filaments, even if the filaments break, the swaying filaments at the top will be attracted by the protrusions, further reducing the possibility of broken filaments getting tangled in the winding equipment.

[0030] 3. The filaments are wrapped around multiple metal rods, which apply a certain pressure to the filaments. When the filaments are too thin or have stress concentration points inside, they are easily pulled and broken, thus screening out poorly formed filaments and improving the quality of the spun products. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the spinning channel structure in Embodiment 1 of this application;

[0032] Figure 2This is a schematic diagram of the spinning channel structure in Embodiment 2 of this application;

[0033] Figure 3 This is a schematic diagram of the optimized spinning channel structure in Embodiment 2 of this application;

[0034] Figure 4 This is a cross-sectional view of the spinning duct in the drying zone in Embodiment 2 of this application;

[0035] Figure 5 This is a cross-sectional view of the spinning duct in the drying zone in Embodiment 3 of this application;

[0036] Figure 6 This is a cross-sectional view of the spinning duct in the drying zone in Embodiment 4 of this application;

[0037] Figure 7 This is a schematic diagram of the spinning channel in Embodiment 4 of this application.

[0038] Explanation of reference numerals in the attached drawings: 1. Spinneret; 11. Spinneret orifice; 2. Channel body; 21. Evaporation zone; 22. Solidification zone; 23. Drying zone; 231. First side plate; 2311. Wire discharge hole; 2312. Friction component; 232. Second side plate; 233. Third side plate; 234. Window; 24. Wire outlet; 3. Baffle; 31. Wire channel; 32. Protrusion; 4. Locking component; 5. Vacuum pump; 51. Vacuum pipe; 52. Filter component; 6. Electroscope; 61. Rotating shaft; 611. Tilting part; 62. Electroscope rod; 63. Elastic component; 7. Driving component; 8. Metal rod; 9. Static eliminator. Detailed Implementation

[0039] The following is in conjunction with the appendix Figure 1-7 This application will be described in further detail.

[0040] Example 1:

[0041] Reference Figure 1 This application discloses a spinning duct, including a hollow duct body 2 and a spinneret 1 installed on the top of the duct body 2. The spinneret 1 has multiple spinneret holes 11 arranged at intervals. A filament outlet 24 is formed through the lower end of the duct body 2. A baffle 3 is movably connected to the duct body 2 at the filament outlet 24. The baffle 3 has a filament channel 31. A locking member 4 is provided on the duct body 2 to lock the baffle 3 in place until it covers the filament outlet 24. When a filament breaks, the upper filament falls onto the baffle 3, reducing the possibility of uncombed filaments falling directly onto the winding equipment below, causing entanglement and malfunction.

[0042] Melt spinning is a type of electrostatic spinning. A spinning box is connected above the spinneret 1 to the channel body 2. The polymer is heated and melted in the spinning box, and then the melt is squeezed and ejected from the tiny spinneret holes 11 on the spinneret 1 under high pressure. The melt cools and solidifies to form fibers as it passes through the channel body 2, and then is drawn and wound into shape. The channel body 2 needs to be ventilated from top to bottom to allow the melt to solidify into filaments quickly.

[0043] The spinneret 11 on the spinneret plate 1 is connected to the spinning box and the passage body 2. The spinneret 11 can be arranged in one or more rows. In this embodiment, the spinneret 11 is arranged in one row. The filament channel 31 is arranged in a rectangle along the arrangement direction of the spinneret 11, which is just enough for the filament to pass through.

[0044] The tunnel body 2 is rolled from high-temperature resistant materials such as alumina or stainless steel. The tunnel body 2 is designed as an inverted trapezoidal ventilation tube. The tunnel body 2 forms an interconnected evaporation zone 21, a solidification zone 22, and a drying zone 23 from top to bottom. The tunnel body 2 gradually narrows from top to bottom. Since the ventilation volume inside the tunnel body 2 is constant, the wind speed can be increased as the area gradually decreases, thereby allowing the solidified filaments to dry quickly and reducing the possibility of the filaments sticking together during winding.

[0045] Reference Figure 1 The drying zone 23 includes a first side plate 231, a third side plate 233, and a second side plate 232 connected in sequence. The opposite side of the third side plate 233 forms a window 234 that is convenient for workers to operate. The bottom of the drying zone 23 forms a yarn outlet 24. The baffle 3 can cover or open the yarn outlet 24.

[0046] In other embodiments, the baffle 3 and the passageway 2 can be detachably connected by bolts or spring pins.

[0047] In this embodiment, for ease of operation, the baffle 3 and the passage body 2 can be hinged by a pivot or hinge. The baffle 3 is connected to the bottom of the first side plate 231. The locking member 4 is a horizontal support plate fixed to the bottom of the third side plate 233. The baffle 3 can be rotated to rest on the support plate, thereby restricting the baffle 3 from continuing to rotate downward.

[0048] The implementation principle of Embodiment 1 of this application is as follows:

[0049] After the polymer is heated and melted, it is ejected from the spinneret 11 under high pressure to form filaments. The filaments solidify within the channel body 2 and then enter the winding equipment below through the filament channel 31 on the baffle 3 for winding. In the event of a filament breakage, the lower filament is still wound normally, while the continuously generated filaments at the upper end fall onto the baffle 3, reducing the possibility of uncombed filaments falling directly onto the winding equipment below and causing entanglement and malfunction. When a malfunction is detected, the baffle 3 can be rotated to open the filament outlet 24, and the worker can then reassemble the broken filaments onto the winding equipment through the window. The operation is convenient and quick, improving production efficiency.

[0050] Example 2:

[0051] Reference Figure 2 This application discloses a spinning channel, which is further optimized based on embodiment 1. A plurality of protrusions 32 are provided on the baffle 3. The protrusions 32 can be fixed to the side of the baffle 3 opposite to the filament outlet 24 by welding or bolting. The protrusions 32 can be arranged in an array. The protrusions 32 can hook the filaments, thereby reducing the possibility that the filaments falling onto the baffle 3 after breakage may be pushed off the filament channel 31 due to continuous production. In other embodiments, the protrusions 32 can also be replaced with spike-shaped hooks, thereby further increasing the hooking effect on broken filaments.

[0052] Reference Figure 3 Some strands may be cut off at both ends and remain on the baffle 3. Because the surface of the baffle 3 has multiple protrusions 32, it is difficult for workers to clean it. In order to facilitate the cleaning of the remaining strands, the first side plate 231 is provided with several strand discharge holes 2311 corresponding to the protrusions 32. After the baffle 3 is rotated towards the first side plate 231, the protrusions 32 are inserted into the strand discharge holes 2311. The top of the protrusions 32 may be rounded to facilitate rotation into the strand discharge holes 2311. The first side plate 231 is connected to an air extraction pipe 51 that communicates with the strand discharge holes 2311. The end of the air extraction pipe 51 away from the first side plate 231 is connected to an air extraction machine 5.

[0053] Reference Figure 4 When a broken wire is sucked in by the vacuum pump 5, it may be drawn into the vacuum pump 5, causing the vacuum pump 5 to malfunction. Furthermore, a filter element 52 can be provided in the suction pipe 51. The filter element 52 can be a metal wire mesh with small mesh size. Since the wire diameter is very small, it is preferable to set at least two metal meshes along the suction direction. The filter element 52 traps the wire inside the filter element 52, which can extend the service life of the vacuum pump 5.

[0054] Optionally but not limited to, several through holes corresponding to the yarn discharge holes 2311 can be opened on the second side plate 232. The air pump 5 can form a stable side blowing air in the drying zone 23, thereby rectifying the airflow in the channel body 2, accelerating the drying of the yarn, and improving the quality of the product.

[0055] Example 3:

[0056] When the solution is ejected from the spinneret hole 2311 under high pressure, the high-voltage power supply will cause the charge on the solution to move. Because the solution from the spinneret hole 11 will hang down into a hemispherical shape, the charge will be concentrated at the tip with the greatest curvature of the solution. As the charge increases, the molecules in the solution will repel each other to form a Taylor cone, which will then be ejected from the spinneret hole 2311. Therefore, the filament itself will carry a partial positive charge.

[0057] Reference Figure 5 This application discloses a spinning channel, which is further optimized based on embodiment 2. A friction element 2312 is provided on the inner wall of the yarn feeding hole 2311. The baffle 3 rotates towards the first side plate 231 until the protrusion 32 enters the yarn feeding hole 2311, and then rotates again to disengage the protrusion 32 from the yarn feeding hole 2311. While the blower 5 cleans up the broken yarn, the friction element 2312 can also charge the protrusion 32. The friction element 2312 can be made of fur and the protrusion 32 can be made of rubber, so that the protrusion 32 becomes negatively charged. When the yarn breaks, the protrusion 32 can attract the positively charged yarn, further reducing the possibility of broken yarn getting tangled in the winding equipment. In other embodiments, silk can also be covered on the surface of the protrusion 32 and a glass layer can be adhered to the inner wall of the yarn feeding hole 2311. After the silk rubs against the glass layer, the silk will become negatively charged. The protrusion 32 and the inner wall of the yarn feeding hole 2311 can be made of different materials to make the surface of the protrusion 32 negatively charged.

[0058] Furthermore, to ensure that the protruding post 32 maintains a continuous charge so that it can adhere to the post 32 even if the filament suddenly breaks, an electroscope 6 is also provided on the inner wall of the tunnel body 2. The electroscope 6 can be an existing device and will not be described in detail. The electroscope 6 can be fixed on the third side wall and its height corresponds to the height of the protruding post 32. The electroscope 6 is used to monitor the charge on the protruding post 32. The baffle 3 is connected to a drive component 7 that drives the baffle 3 to rotate. The drive component 7 and the electroscope 6 are electrically connected through a control unit. The drive component 7 can be a small motor installed on the outer wall of the tunnel body 2, and the output shaft of the motor is fixedly connected to the rotating shaft of the baffle 3.

[0059] In other embodiments, the electroscope 6 may be configured as a non-contact electroscope 6, but when the non-contact electroscope 6 monitors the electrical charge of the protrusion 32, it may be affected by the filament, which also has an electrical charge.

[0060] In this embodiment, in order to improve the accuracy of monitoring, the electroscope 6 is preferably configured as a contact electroscope 6. Specifically, the electroscope 6 includes a rotating shaft 61 hinged to the tunnel body 2, an electroscope rod 62 disposed on the rotating shaft 61, and an elastic member 63 that drives the electroscope rod 62 to rotate in the direction of the inner wall of the tunnel body 2. The rotating shaft 61 can be hinged to the bottom of the inner wall of the second side plate 232. A flipping part 611 is provided on the rotating shaft 61. When the baffle 3 rotates in the direction of the wire outlet 24, it can press against the flipping part 611 and make the electroscope rod 62 rotate to contact the protrusion 32. A corresponding clearance groove is provided on the locking member 4 for the flipping part 611 to pass through.

[0061] The implementation principle of Embodiment 3 of this application is as follows:

[0062] The control unit can first set a low charge threshold. When the spinning operation is normal, the electroscope 6 can continuously monitor the charge of the protrusion 32. When the charge is less than the low charge threshold, the control unit sends a signal to the drive unit 7, causing the drive unit 7 to drive the baffle 3 to rotate until the protrusion 32 enters the yarn discharge hole 2311 with the friction element 2312 and then disengages. The protrusion 32 rubs against the friction element 2312, thereby increasing the charge, which can ensure that the yarn can be adsorbed on the protrusion 32 when it suddenly breaks.

[0063] In addition, when the baffle 3 rotates toward the first side plate 231, the elastic element 63 can drive the test rod 62 to disengage from the protrusion 32 and the baffle 3, without the need for additional operation by the staff, which is automatic and efficient; when the baffle 3 rotates toward the wire outlet 24, the baffle 3 gradually approaches and presses against the flipping part 611, thereby causing the rotating shaft 61 to rotate toward the baffle 3, which in turn drives the test rod 62 to rotate until it contacts the protrusion 32.

[0064] Example 4:

[0065] Reference Figure 6 and Figure 7 This application discloses a spinning channel, which is further optimized based on embodiment 3. To further increase the likelihood that the filament will be attracted by the negatively charged protrusions 32 when it breaks, thus preventing it from falling onto the winding equipment, it is necessary to increase the charge of the filament inside the channel body 2. Specifically, the channel body 2 is provided with a plurality of metal rods 8 arranged laterally. The length direction of the metal rods 8 is consistent with the arrangement direction of the spinnerets 11. The metal rods 8 can be fixedly or rotatably connected inside the channel body 2. Preferably, the two ends of the metal rods 8 are respectively hinged to the first side plate 231 and the second side plate 232. The material of the metal rods 8 can be selected from appropriate materials among metals such as platinum, iron, aluminum, and magnesium, depending on the spinning material. When the filament passes through the channel body 2, it rubs against the metal rods 8, which can increase the positive charge of the filament.

[0066] Furthermore, multiple metal rods 8 are spaced vertically, and the vertical projection of each metal rod 8 overlaps with the spinneret 11. In this case, the height of the first side plate 231 must be greater than the length of the baffle 3. The metal rods 8 are all positioned at the top of the first side plate 231, so that the baffle 3 will not be interfered with by the metal rods 8 when it rotates to fit against the first side plate 231. By winding the filament around multiple metal rods 8, the charge on the filament can be further increased, thereby increasing the adsorption effect of the filament. The metal rods 8 can also apply a certain pressure to the filament. When the filament is too thin or has stress concentration points inside, it is easily pulled and broken, thereby screening out poorly formed filaments and improving the quality of the spun products.

[0067] It should be noted that excessive static electricity can reduce the quality of spun products. When the workshop is too dry, static spark accidents may also occur. Therefore, a static eliminator 9 can be installed below the baffle 3 in the passageway 2. The static eliminator 9 can eliminate the static electricity of the yarn, thereby reducing the possibility of accidents.

[0068] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A spinning channel, comprising a hollow channel body (2) and a spinneret (1) mounted on the top of the channel body (2), wherein a plurality of spinneret holes (11) are arranged at intervals on the spinneret (1), and a filament outlet (24) is formed through the lower end of the channel body (2), characterized in that: The tunnel body (2) is movably connected to a baffle (3) at the wire outlet (24). A wire channel (31) is provided on the baffle (3). A locking member (4) is provided on the tunnel body (2) to lock the baffle (3) to cover the wire outlet (24). The baffle (3) has several protrusions (32) on the side facing away from the wire outlet (24). The baffle (3) is hinged to the tunnel body (2). The side of the tunnel body (2) that is hinged to the baffle (3) is set as a first side plate (231). The first side plate (231) has a plurality of wire-laying holes (2311). After the baffle (3) rotates in the direction of the first side plate (231), the protrusion (32) is inserted into the wire-laying hole (2311). The first side plate (231) is connected to an air extraction pipe (51) that communicates with the wire-laying hole (2311). The end of the air extraction pipe (51) away from the first side plate (231) is connected to an air pump (5). The inner wall of the wire-laying hole (2311) is provided with a friction element (2312), and the protrusion (32) becomes electrified after rubbing against the friction element (2312).

2. The spinning tunnel according to claim 1, characterized in that: A filter element (52) is installed inside the air extraction pipe (51).

3. The spinning tunnel according to claim 1, characterized in that: An electroscope (6) is provided on the inner wall of the passage body (2). The electroscope (6) is used to monitor the charge on the protrusion (32). The baffle (3) is connected to a drive member (7) that drives the baffle (3) to rotate. The drive member (7) is electrically connected to the electroscope (6).

4. A spinning tunnel according to claim 3, characterized in that: A plurality of the aforementioned protrusions (32) are arranged in an array. The electroscope (6) includes a rotating shaft (61) hinged to the tunnel body (2), an electroscope rod (62) disposed on the rotating shaft (61), and an elastic element (63) that drives the electroscope rod (62) to rotate in the direction of the inner wall of the tunnel body (2). A flipping part (611) is provided on the rotating shaft (61). When the baffle (3) rotates in the direction of the wire outlet (24), it can press against the flipping part (611) and make the electroscope rod (62) rotate to contact the protrusions (32).

5. A spinning tunnel according to claim 1, characterized in that: The tunnel body (2) is provided with several metal rods (8) arranged laterally, and the length direction of the metal rods (8) is consistent with the arrangement direction of the spinneret holes (11).

6. A spinning tunnel according to claim 5, characterized in that: Multiple metal rods (8) are arranged at intervals, and the vertical projection of each metal rod (8) overlaps with the spinneret (11).

7. A spinning tunnel according to claim 6, characterized in that: The tunnel body (2) is provided with an electrostatic eliminator (9) below the baffle (3).

Images