Yarn breaking treatment system for polyimide fiber filament production guide roller

Abstract

A guide roller broken yarn processing system for polyimide fiber filament production comprises a scraper blade and a yarn suction mechanism which are arranged on a guide roller, the distance between the scraper blade and the guide roller is smaller than the diameter of a filament, and the yarn suction mechanism is located above the scraper blade and used for collecting broken yarn stripped from the guide roller by the scraper blade. The guide roller has the advantages that when fibers are broken at the guide roller, the broken fibers can be separated from the guide roller through the scraper blade and prevented from being wound on the guide roller, meanwhile, the broken fibers are sucked through the yarn suction mechanism, the fibers keep certain tension, and normal fibers are prevented from being interfered. The scraping plate and the yarn suction mechanism work together, it can be guaranteed that broken yarn can be sucked by the yarn suction mechanism in time, and the good broken yarn winding prevention effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of spinning machinery, in particular to a guide roller broken wire processing system used in the production of polyimide fiber filaments. Background Art

[0002] In the production of polyimide filament, the raw silk fibers are subjected to hot stretching treatment by guide rollers. During the stretching process, the fibers may break and have a small amount of hairy fibers. On-site operators are required to conduct timely inspections to discover and deal with the broken fibers and a small amount of hairy fibers. The work intensity of on-site operators is very high. If the broken fibers are not dealt with in time, a small amount of broken fibers will affect the rest of the fibers that are produced normally, resulting in a large number of broken fibers and the inability to produce normally.

[0003] The Chinese utility model patent with the authorization announcement number CN218932405U discloses a wire suction device for preventing drive entanglement in the production of polyacrylonitrile raw wire, wherein the broken wire sensor is arranged on the outer side of the driving roller surface, the wire suction nozzle is arranged at the bottom of the driving roller, the wire suction nozzle is connected to the fan through the air duct, and the fan is provided with an air outlet; the broken wire sensor is controlled by the control system in the control cabinet, the control cabinet is electrically connected to the frequency converter, and the frequency converter is electrically connected to the fan. In this technical solution, the wire suction nozzle is directly used to collect the broken wire. Since the broken wire is thin and the driving roller is constantly rotating, the broken wire is easy to be wound around the driving roller, and the broken wire wound around the driving roller is difficult to be sucked out by the wire suction nozzle. Therefore, it is still impossible to completely avoid the occurrence of wire entanglement by only sucking the wire with the wire suction nozzle. Utility Model Content

[0004] The utility model aims to remove broken wires from the guide roller in time to avoid entanglement. In view of the above-mentioned shortcomings of the prior art, a guide roller broken wire processing system for producing polyimide fiber filaments is proposed.

[0005] A broken wire processing system for a guide roller in the production of polyimide fiber filaments comprises a scraper and a wire suction mechanism arranged above the guide roller, wherein the distance between the scraper and the guide roller is smaller than the diameter of the filaments, and the wire suction mechanism is used to collect the broken wires peeled off the guide roller by the scraper.

[0006] By adopting the above technical scheme: in the normal production process, the filaments are wound around multiple guide rollers in sequence and subjected to heat stretching treatment through the guide rollers. One side of the guide roller is connected to the filaments, and the other side is provided with a scraper and a wire suction mechanism. When the fiber breaks at the guide roller, the scraper can separate the broken fiber from the guide roller to prevent the broken fiber from being entangled on the guide roller. At the same time, the wire suction mechanism sucks the broken fiber to keep a certain tension of the fiber and avoid interference with normal fiber.

[0007] The above technical solution is further configured as follows: the wire suction mechanism includes a wire suction pipeline, a wire collection box and an air compressor, and the wire suction pipeline is provided with a regulating valve for adjusting the wire suction force of the wire suction pipeline.

[0008] By adopting the above technical solution: the wire suction head of the wire suction pipe is close to the guide roller, the air compressor provides negative pressure to the wire suction pipe, and the size of the negative pressure is controlled by the regulating valve to adjust the wire suction force, and the broken wire enters the wire collecting box along the wire suction pipe under the action of negative pressure.

[0009] The above technical solution is further configured as follows: a scraper adjustment mechanism is provided on the bracket, including a fixed plate and a plurality of adjustment bolts, a scraper is provided at one end of the fixed plate, and a strip hole is provided at the other end of the fixed plate, and the adjustment bolt passes through the strip hole and is fixedly connected to the bracket.

[0010] The above technical solution is further configured as follows: the scraper is a carbon fiber plate, and the gap between the scraper and the guide roller is between 0.02-0.05 mm.

[0011] By adopting the above technical solution: a gap of 0.02-0.05mm is set between the scraper and the guide roller according to the denier of the filament, so that the scraper is not in contact with the guide roller, and the distance between the scraper and the guide roller is smaller than the diameter of the filament. Therefore, during the rotation of the guide roller, the broken ends of the filament can be scraped off the guide roller by the scraper, and the wire suction mechanism is located above the scraper, so that the filament can be smoothly sucked into the wire suction pipe.

[0012] The scraper adjustment mechanism can adjust the distance between the scraper and the guide roller. One end of the scraper is fixed on the fixed plate, and the other end of the fixed plate is fixedly connected to the bracket through an adjusting bolt. A strip hole is provided on the fixed plate. The relative position between the fixed plate and the bracket can be adjusted through the strip hole and the adjusting bolt. By adjusting the position of the fixed plate, the position of the scraper can be adjusted.

[0013] The scraper is made of carbon fiber plate, which is non-metallic, high-strength, wear-resistant and durable. During debugging or use, it is inevitable that the scraper will contact and rub against the guide roller. The carbon fiber plate will not damage the guide roller surface because it is non-metallic. Its high strength and wear-resistant characteristics can prevent the scraper from deformation and damage.

[0014] The above technical solution is further configured as follows: the wire suction pipe is arranged on the scraper through a wire suction pipe adjustment mechanism.

[0015] The above technical solution is further configured as follows: the wire suction pipe adjustment mechanism includes a mounting plate, a pad and fixing bolts; the mounting plate, the wire suction pipe, the pad and the scraper are stacked in sequence in a horizontal direction and fixed to the fixing plate by fixing bolts.

[0016] The above technical solution is further configured as follows: the thickness of the pad is 5-15 mm.

[0017] The above technical solution is further configured as follows: arc grooves are provided on the surfaces where the mounting plate and the backing plate are connected to the wire suction pipe.

[0018] The above technical aspect is further configured as follows: the wire suction head of the wire suction pipe is located above the wire scraping head of the scraper.

[0019] By adopting the above technical scheme: the scraper is fixed on the fixed plate, and a wire suction pipe adjustment mechanism is provided on the side of the scraper away from the fixed plate. The wire suction pipe adjustment mechanism includes a pad, a wire suction pipe and a mounting plate which are sequentially arranged on one side of the scraper. The pad and the mounting plate clamp the wire suction pipe. An arc groove is provided at the joint between the mounting plate and the pad and the wire suction pipe to facilitate fixing the wire suction pipe. The fixing bolts fix the mounting plate, the pad and the scraper to the fixed plate at the same time. By replacing pads of different thicknesses, the distance between the wire suction pipe and the scraper can be adjusted to achieve the best wire suction effect.

[0020] The wire suction head of the wire suction pipe passes through the arc groove and is located above the wire scraping head of the scraper. After the scraper scrapes the broken wires on the guide roller, the wire suction head can quickly collect the broken wires.

[0021] The above technical solution is further configured to include: a broken wire detection mechanism and a broken wire alarm, the filament passes through a detection hole of the broken wire detection mechanism, and the broken wire detection mechanism is connected to the broken wire alarm signal.

[0022] By adopting the above technical solution, when a wire breakage occurs, no filament passes through the detection hole of the wire breakage detection mechanism, and the wire breakage detection mechanism detects the wire breakage and feeds back to the wire breakage alarm, so that the on-site operator can rethread the broken wire for drafting production. A wire breakage detection mechanism is provided at each guide roller to facilitate the operator to determine the position of the broken wire.

[0023] The beneficial effects of the utility model are:

[0024] 1. When the fiber breaks at the guide roller, the scraper can separate the broken fiber from the guide roller to prevent the broken fiber from winding on the guide roller. At the same time, the suction mechanism sucks the broken fiber to keep the fiber at a certain tension and avoid interference with normal fiber. The scraper and the suction mechanism work together to ensure that the broken fiber can be sucked by the suction mechanism in time, achieving a good effect of preventing broken fiber from winding.

[0025] 2. The scraper adjustment mechanism can accurately adjust the gap between the scraper and the guide roller, so that the scraper is not in contact with the guide roller, and the distance between the scraper and the guide roller is smaller than the diameter of the filament. Therefore, during the rotation of the guide roller, the broken ends of the filament can be scraped off the guide roller by the scraper. The wire suction mechanism is located above the scraper, and the filament can be smoothly sucked into the wire suction pipe.

[0026] 3. The wire suction pipe adjustment mechanism can adjust the distance between the wire suction pipe and the scraper by replacing the pads of different thicknesses to achieve the best wire suction effect. It has a simple structure and is easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the structure of the utility model.

[0028] Figure 2 Schematic diagram of the connection between the scraper and the wire suction mechanism.

[0029] In the figure, 1. bracket; 2. guide roller; 3. filament; 4. scraper; 5. wire suction mechanism; 51. wire suction pipeline; 52. wire collecting box; 53. regulating valve; 6. scraper adjustment mechanism; 61. fixing plate; 62. adjusting bolt; 7. wire suction pipeline adjustment mechanism; 71. mounting plate; 72. pad; 73. fixing bolt; 8. wire break detection mechanism; 9. wire break alarm. DETAILED DESCRIPTION

[0030] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0031] Example 1

[0032] A guide roller broken wire processing system for producing polyimide fiber filaments, such as Figure 1 As shown, it includes a bracket 1, on which a plurality of guide rollers 2 are rotatably connected, and polyimide fiber filaments 3 are sequentially wound around the plurality of guide rollers 2 for heat drawing treatment, one side of the guide roller 2 is connected to the filaments 3, and the other side is provided with a scraper 4 and a wire suction mechanism 5.

[0033] like Figure 2 As shown, the distance between the scraper 4 and the guide roller 2 is 0.02 mm, which is smaller than the diameter of the filament 3. When the filament 3 breaks at the guide roller 2, the scraper 4 can peel the head of the broken filament from the guide roller 2 to prevent the broken filament fiber from being entangled on the guide roller 2.

[0034] like Figure 2 As shown, the wire suction mechanism 5 includes a wire suction pipeline 51, a wire collection box 52 and an air compressor. The wire suction pipeline 51 is provided with a regulating valve 53 for adjusting the wire suction force of the wire suction pipeline 51. The wire suction head of the wire suction pipeline 51 is close to the guide roller 2. The air compressor provides negative pressure to the wire suction pipeline 51. The magnitude of the negative pressure is controlled by the regulating valve 53, thereby adjusting the wire suction force. The broken wires stripped from the guide roller 2 by the scraper 4 enter the wire collection box 52 along the wire suction pipeline 51 under the action of the negative pressure.

[0035] Example 2

[0036] like Figure 2 As shown, a scraper adjustment mechanism 6 is provided on the bracket 1, including a fixed plate 61 and a plurality of adjusting bolts 62. The scraper 4 is fixedly connected to one end of the fixed plate 61 close to the guide roller 2. A strip hole is provided at the other end of the fixed plate 61. The adjusting bolt 62 passes through the strip hole and is fixedly connected to the bracket 1. The gap between the scraping head at the lower end of the scraper 4 and the guide roller 2 can be adjusted within the length range of the strip hole.

[0037] The scraper 4 is made of carbon fiber plate, which is non-metallic, high-strength, wear-resistant and durable. During debugging or use, it is inevitable that the scraper 4 will contact and rub against the guide roller 2. The carbon fiber plate will not damage the surface of the guide roller 2 because it is non-metallic. Its high strength and wear-resistant characteristics can prevent the scraper 4 from deformation and damage.

[0038] Example 3

[0039] like Figure 2 As shown, the scraper 4 is provided with a wire suction pipe adjustment mechanism 7, including a mounting plate 71, a pad 72 and a fixing bolt 73. The wire suction pipe 51 is located between the mounting plate 71 and the pad 72. The pad 72 is selected to be 5 mm thick. An arc groove is provided at the junction of the mounting plate 71 and the pad 72 with the wire suction pipe 51. The pad 72 is located between the wire suction pipe 51 and the fixed plate 61. The mounting plate 71, the pad 72 and the scraper 4 are connected to the fixed plate 61 through the fixing bolt 73. When it is necessary to adjust the distance between the wire suction pipe 51 and the scraper 4, the fixing bolt 73 is removed and the pad 72 of other thickness is replaced. Under the action of the fixing bolt 73, the wire suction pipe 51 is clamped by the pad 72 and the mounting plate 71, and the wire suction head of the wire suction pipe 51 passes through the arc groove and is located above the scraping head of the scraper 4. After the scraper 4 scrapes the broken wires on the guide roller 2, the wire suction head can quickly collect the broken wires.

[0040] Example 4

[0041] like Figure 1 As shown, a broken wire detection mechanism 8 is provided at the guide roller 2. The broken wire detection mechanism 8 uses a diaphragm broken yarn sensor of Manzhi Electronics, model HDX-NB•1719U. A broken wire alarm 9 is provided on the frame. Several broken wire detection mechanisms 8 are connected to the broken wire alarm 9 signal. The filament 3 passes through the detection hole of the broken wire detection mechanism 8. The broken wire detection mechanism 8 can detect whether the filament 3 is broken in real time. When the broken wire occurs, no filament 3 passes through the detection hole of the broken wire detection mechanism 8. The broken wire detection mechanism 8 detects the broken wire and feeds back to the broken wire alarm 9. The on-site operator rethreads the broken wire for drafting production. A broken wire detection mechanism 8 is provided at each guide roller 2 to facilitate the operator to determine the position of the broken wire.

[0042] For matters not mentioned above, the prior art applies.

[0043] Although some specific embodiments of the utility model have been described in detail through examples, those skilled in the art should understand that the above examples are only for illustration, not for limiting the scope of the utility model. Those skilled in the art of the utility model can make various modifications or supplements to the specific embodiments described or replace them in a similar manner, but they will not deviate from the direction of the utility model or exceed the scope defined by the attached claims. Those skilled in the art should understand that any modification, equivalent replacement, improvement, etc. made to the above implementation methods based on the technical essence of the utility model should be included in the protection scope of the utility model.

Claims

1. A guide roller broken wire processing system for polyimide fiber filament production, characterized in that: It comprises a scraper (4) and a wire suction mechanism (5) arranged above a guide roller (2); the distance between the scraper (4) and the guide roller (2) is smaller than the diameter of the filaments (3); and the wire suction mechanism (5) is used to collect the broken filaments peeled off from the guide roller (2) by the scraper (4).

2. The guide roller broken wire processing system for polyimide fiber filament production according to claim 1, characterized in that: The wire suction mechanism (5) comprises a wire suction pipeline (51), a wire collection box (52) and an air compressor. The wire suction pipeline (51) is provided with a regulating valve (53) for adjusting the wire suction force of the wire suction pipeline (51).

3. The guide roller broken wire processing system for polyimide fiber filament production according to claim 2 is characterized in that: The invention also comprises a bracket (1), wherein the bracket (1) is provided with a scraper adjustment mechanism (6), wherein the scraper adjustment mechanism (6) comprises a fixing plate (61) and a plurality of adjustment bolts (62), wherein a scraper (4) is provided at one end of the fixing plate (61) close to the guide roller (2), and a strip hole is provided at the other end of the fixing plate (61), and the adjustment bolt (62) passes through the strip hole and is detachably connected to the bracket (1).

4. The guide roller broken wire processing system for polyimide fiber filament production according to claim 3 is characterized in that: The scraper (4) is a carbon fiber plate, and the gap between the scraper (4) and the guide roller (2) is between 0.02-0.05 mm.

5. The guide roller broken wire processing system for polyimide fiber filament production according to claim 3, characterized in that: The wire suction pipe (51) is arranged on the scraper (4) via a wire suction pipe adjustment mechanism (7).

6. The guide roller broken wire processing system for producing polyimide filaments according to claim 5, characterized in that: The wire suction duct adjustment mechanism (7) comprises a mounting plate (71), a backing plate (72) and fixing bolts (73); the mounting plate (71), the wire suction duct (51), the backing plate (72) and the scraper (4) are stacked in sequence in a horizontal direction and fixed on the fixing plate (61) by means of fixing bolts (73).

7. The guide roller broken wire processing system for polyimide fiber filament production according to claim 6, characterized in that: The thickness of the pad (72) is 5-15 mm.

8. The guide roller broken wire processing system for polyimide fiber filament production according to claim 6, characterized in that: Arc grooves are respectively provided on the surfaces where the mounting plate (71) and the backing plate (72) are connected to the wire suction pipe (51).

9. The guide roller broken wire processing system for polyimide fiber filament production according to claim 2, characterized in that: The wire suction head of the wire suction pipe (51) is located above the wire scraping head of the scraper (4).

10. The guide roller broken wire processing system for polyimide filament production according to claim 1, characterized in that: It also comprises a broken wire detection mechanism (8) and a broken wire alarm (9), the filament (3) passes through a detection hole of the broken wire detection mechanism (8), and the broken wire detection mechanism (8) is signal-connected to the broken wire alarm (9).

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