Device for detecting broken tows in conveying process of fiber tows

Abstract

The utility model discloses a broken filament detection device in a fiber bundle conveying process, which comprises a support, a conveying guide roller, a first dispersing roller, a second dispersing roller, a fan and a photoelectric sensor are arranged on the support, the first dispersing roller is positioned on the right side of the conveying guide roller, and the second dispersing roller is positioned right above the conveying guide roller. A fiber tow sequentially bypasses the top of the conveying guide roller, the lower right portion of the first dispersing roller and the left half portion of the second dispersing roller and then is horizontally conveyed rightwards, the fan is located on the right side of the second dispersing roller and located above fibers which are horizontally conveyed rightwards and dispersed, and the photoelectric sensor is located on the right side of the second dispersing roller and located below the fibers which are horizontally conveyed rightwards and dispersed. The device is scientific in principle, reasonable in design and compact in structure, bundled cellosilk is dispersed and unfolded firstly, then two broken ends of the broken cellosilk are blown out through high-pressure air and shake or shake, the photoelectric sensor can conveniently and rapidly detect a cellosilk breaking signal, an alarm is given out to remind workers to handle the cellosilk breaking signal in time, the labor intensity of manual detection is relieved, and the detection efficiency is improved. And the production cost of an enterprise is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of fiber production, and particularly relates to a broken wire detection device in the process of fiber bundle transportation. Background Art

[0002] In fiber production, the spinning solution or melt passes through several micropores of the spinneret of a chemical fiber textile machine and is squeezed into a coagulation bath or air in a thin stream, where it solidifies or cools into fiber filaments. Multiple fiber filaments are then bundled into a fiber tow for finishing operations on the production line. The finishing operations include bundling, drawing, washing, oiling, drying, heat setting, crimping, cutting, and packaging. However, during the finishing process, it is common for a fiber tow to break. If the broken fiber appears to be a fiber outside the tow, it is easy to detect. Since the broken fiber is located in the middle of the tow in most cases, it is difficult for workers to detect it during the inspection process. If the broken fiber is not discovered and handled in time, it will affect production efficiency. In severe cases, it will cause equipment blockage and prevent it from working properly. Utility Model Content

[0003] The utility model aims to provide a device for detecting broken fibers in a fiber bundle conveying process, which can accurately and quickly identify broken fibers.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions: a device for detecting broken fibers during the conveying process of fiber bundles, including a bracket, on which a conveying guide roller, a first dispersing roller, a second dispersing roller, a fan and a photoelectric sensor are provided. The first dispersing roller is located on the right side of the conveying guide roller, and the second dispersing roller is located directly above the conveying guide roller. The fiber bundle is conveyed horizontally to the right after passing around the top of the conveying guide roller, the lower right part of the first dispersing roller and the left half of the second dispersing roller in sequence. The fan is located on the right side of the second dispersing roller and above the fiber bundles after being conveyed horizontally to the right. The photoelectric sensor is located on the right side of the second dispersing roller and below the fiber bundles after being conveyed horizontally to the right.

[0005] The outer diameters of the first dispersing roller and the second dispersing roller are both thick in the middle and gradually become smaller towards the front and rear sides. The outer circles of the front and rear ends of the first dispersing roller and the second dispersing roller are both provided with limiting rings.

[0006] Three fans are evenly arranged along the front-to-back direction, and the coverage area of ​​the three fans blowing air downward along the front-to-back direction is greater than or equal to the length of the second dispersing roller.

[0007] The photoelectric sensor is located at the front side or the rear side below the fiber filaments transported horizontally to the right by the second dispersion roller, and the detection direction of the photoelectric sensor is along the front-to-back direction.

[0008] The wrap angle of the fiber bundle passing through the first dispersion roller is greater than 180°, and the wrap angle of the fiber bundle passing through the second dispersion roller is greater than 120° and less than 180°.

[0009] Using the above technical solution, the working principle and process of the utility model are as follows: the fiber tow first passes around the upper middle portion of the conveying guide roller from left to right, and then passes diagonally downward from the lower portion of the first dispersion roller and upward around the first dispersion roller. When passing through the first dispersion roller, because the outer diameter of the first dispersion roller is thick in the middle and gradually decreases to the front and back sides, the fiber tow gradually disperses and spreads forward and backward as it passes around the outer diameter of the first dispersion roller. The preliminarily dispersed fiber tow then passes upward from the lower left portion of the second dispersion roller and passes through the second dispersion roller. After passing through the second dispersion roller again, which is thick in the middle and gradually decreases to the front and back sides, the preliminarily dispersed fiber tow is basically completely dispersed and spread out, and then conveyed horizontally to the right. A fan blows air downward on the basically fully spread fiber tow. If a fiber tow breaks, the two broken ends of the broken fiber tow are blown down by the wind. When the two broken ends move to the right to the position monitored by the photoelectric sensor signal, the photoelectric sensor signal detects the shaking broken end and transmits the broken fiber signal to the PLC controller. The PLC controller sends a signal to the sound and light alarm, which sounds an alarm signal, alerting staff to the broken fiber and the need for immediate attention. A PLC controller and an audible and visual alarm can also be arranged on the bracket.

[0010] The outer diameters of the first and second dispersing rollers are both thicker in the middle and taper toward the front and rear. This allows fiber bundles passing around the outer diameters of the first and second dispersing rollers to move from the center to the left and right, effectively spreading the bundled fibers. Limiting rings prevent fibers that are too widely dispersed from escaping the dispersing rollers.

[0011] The fan is set to blow down the two broken ends of the broken fiber yarn so that the broken ends are detected by the photoelectric sensor, thereby realizing automatic detection of the broken fiber yarn bundle.

[0012] The conveying guide roller is at the same height as the first dispersing roller and is located directly below the second dispersing roller. The first dispersing roller is located to the lower right of the second dispersing roller. This position setting is not only compact in structure, but also makes the roller wrap angle of the fiber filaments passing around the first dispersing roller and the second dispersing roller relatively large, which has a better dispersion and expansion effect on the fiber bundles.

[0013] In summary, the present invention has a scientific principle, a reasonable design, and a compact structure. It first disperses and expands the bundled fiber filaments, then uses high-pressure air to blow out the two broken ends of the broken filaments and cause them to shake or vibrate, allowing the photoelectric sensor to quickly and easily detect the broken filament signal and issue an alarm to remind staff to handle it in a timely manner, thereby reducing the labor intensity of manual inspection and lowering the company's production costs. The present invention can be set up in any process of the finishing operation. After the broken filaments are detected and handled in a timely manner by the present invention, the dispersed and expanded fiber filaments can continue to be dispersed and expanded according to the needs of the process, or they can be bundled again. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of the utility model;

[0015] Figure 2 yes Figure 1 Right side view. DETAILED DESCRIPTION

[0016] The following is a further detailed description of the embodiments of the present invention in conjunction with the accompanying drawings and examples.

[0017] like Figure 1 and Figure 2 As shown, the broken wire detection device during the conveying process of the fiber bundle of the present invention includes a bracket 1, and the bracket 1 is provided with a conveying guide roller 2, a first dispersion roller 3, a second dispersion roller 4, a fan 5 and a photoelectric sensor 6. The first dispersion roller 3 is located on the right side of the conveying guide roller 2, and the second dispersion roller 4 is located directly above the conveying guide roller 2. The fiber bundle 7 is conveyed horizontally to the right after passing around the top of the conveying guide roller 2, the lower right part of the first dispersion roller 3 and the left half of the second dispersion roller 4 in sequence. The fan 5 is located on the right side of the second dispersion roller 4 and above the fiber filaments 8 after being conveyed horizontally to the right. The photoelectric sensor 6 is located on the right side of the second dispersion roller 4 and below the fiber filaments 8 after being conveyed horizontally to the right.

[0018] The outer diameters of the first dispersing roller 3 and the second dispersing roller 4 are both thick in the middle and gradually become smaller towards the front and rear sides. The outer circles of the front and rear ends of the first dispersing roller 3 and the second dispersing roller 4 are both provided with limiting rings 9.

[0019] Three fans 5 are evenly arranged along the front-to-back direction, and the coverage area of ​​the three fans 5 blowing air downward along the front-to-back direction is greater than or equal to the length of the second dispersing roller 4.

[0020] The photoelectric sensor 6 is located at the front side or the rear side below the fiber filaments transported horizontally to the right by the second dispersing roller 4, and the detection direction of the photoelectric sensor 6 is along the front-to-back direction.

[0021] The wrap angle of the fiber bundle 7 passing through the first dispersion roller 3 is greater than 180°, and the wrap angle of the fiber bundle 7 passing through the second dispersion roller 4 is greater than 120° and less than 180°.

[0022] The working principle and process of the present invention are as follows: the fiber tow 7 first passes around the upper middle portion of the conveying guide roller 2 from left to right, then passes around the first dispersing roller 3 upward from the lower portion thereof obliquely downward. When passing through the first dispersing roller 3, since the outer diameter of the first dispersing roller 3 is thick in the middle and gradually decreases in diameter toward the front and rear sides, the fiber tow 7 gradually disperses and spreads forward and backward when passing around the outer circle of the first dispersing roller 3. Then, the preliminarily dispersed fiber tow 7 passes around the second dispersing roller 4 upward from the lower left portion thereof. After passing through the second dispersing roller 4 again, which is thick in the middle and gradually decreases in diameter toward the front and rear sides, the preliminarily dispersed fiber tow 7 is basically completely dispersed and spread out, and then conveyed horizontally to the right. Fan 5 blows air downward toward the fully extended fiber strands. If a fiber strand breaks, the two broken ends 10 of the broken fiber strand are blown down by the wind. When the two broken ends 10 move rightward to the position monitored by the photoelectric sensor 6 signal, the photoelectric sensor 6 detects the shaking of the broken end 10 and transmits the broken fiber strand signal to the PLC controller. The PLC controller sends a signal to the sound and light alarm, which sounds an alarm signal, alerting staff to the broken fiber strand and the need for immediate action. The PLC controller and sound and light alarm can also be mounted on the bracket 1.

[0023] The outer diameters of the first and second dispersing rollers 3 and 4 are both thick in the middle and gradually taper toward the front and rear. This allows the fiber bundles 7 that pass around the outer circumferences of the first and second dispersing rollers 3 and 4 to move from the center to the left and right. This effectively disperses the bundled fiber strands. The presence of a stop ring 9 prevents excessively dispersed fiber strands from escaping the dispersing rollers.

[0024] The fan 5 is provided to blow down the two broken ends 10 of the broken fiber filaments, so that the broken ends 10 are detected by the photoelectric sensor 6, thereby realizing automatic detection of the broken fiber bundle 7.

[0025] The conveying guide roller 2 is at the same height as the first dispersing roller 3 and is located directly below the second dispersing roller 4. The first dispersing roller 3 is located to the lower right of the second dispersing roller 4. This position setting is not only compact in structure, but also makes the roller wrap angle (the contact area between the fiber yarn and the outer circle of the dispersing roller) of the fiber yarn passing around the first dispersing roller 3 and the roller wrap angle of the second dispersing roller 4 relatively large, which has a better dispersion and expansion effect on the fiber bundle 7.

[0026] It is important to note that the fan 5, photoelectric sensor 6, PLC controller, and sound and light alarm components of the present invention are all existing, mature technologies and commercially available. Therefore, their specific construction and operating principles will not be described in detail. Furthermore, the signal transmission and automatic control of the photoelectric sensor 6, PLC controller, and sound and light alarm in the present invention do not involve any new computer programs.

[0027] The above embodiments illustrate the basic principles and features of the present invention. However, the above merely illustrates preferred embodiments of the present invention and is not intended to limit the present invention to the embodiments described. Persons skilled in the art, inspired by this patent, may make various modifications and improvements without departing from the spirit of the present invention and the scope of protection of the claims, all of which fall within the scope of protection of the present invention. Therefore, the patent and scope of protection of this utility model shall be subject to the appended claims.

Claims

1. A device for detecting broken fibers during fiber tow transportation, comprising a bracket, characterized in that: The bracket is provided with a conveying guide roller, a first dispersing roller, a second dispersing roller, a fan and a photoelectric sensor. The first dispersing roller is located on the right side of the conveying guide roller, and the second dispersing roller is located directly above the conveying guide roller. The fiber bundle passes around the top of the conveying guide roller, the lower right part of the first dispersing roller and the left half of the second dispersing roller in turn, and is then conveyed horizontally to the right. The fan is located on the right side of the second dispersing roller and above the fiber bundles after being conveyed horizontally to the right. The photoelectric sensor is located on the right side of the second dispersing roller and below the fiber bundles after being conveyed horizontally to the right.

2. The device for detecting broken fibers during fiber tow transportation according to claim 1, characterized in that: The outer diameters of the first dispersing roller and the second dispersing roller are both thick in the middle and gradually become smaller towards the front and rear sides. The outer circles of the front and rear ends of the first dispersing roller and the second dispersing roller are both provided with limiting rings.

3. The device for detecting broken fibers during fiber tow transportation according to claim 2, wherein: Three fans are evenly arranged along the front-to-back direction, and the coverage area of ​​the three fans blowing air downward along the front-to-back direction is greater than or equal to the length of the second dispersing roller.

4. The device for detecting broken fibers during fiber tow transportation according to claim 3, wherein: The photoelectric sensor is located at the front side or the rear side below the fiber filaments transported horizontally to the right by the second dispersion roller, and the detection direction of the photoelectric sensor is along the front-to-back direction.

5. The device for detecting broken fibers during fiber tow transportation according to any one of claims 1 to 4, characterized in that: The wrap angle of the fiber bundle passing through the first dispersion roller is greater than 180°, and the wrap angle of the fiber bundle passing through the second dispersion roller is greater than 120° and less than 180°.

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