Equipment and method for automatically removing broken filaments

Abstract

The invention belongs to the technical field of high polymer material preparation, and relates to equipment and a method for automatically removing broken filaments. A heat-conducting metal wire is arranged at an outlet of a drafting hot box, an independent weak current system is adopted, a controllable metal wire for adjusting current is added on a main circuit, and the current of the heat-conducting metal wire is controlled by adjusting the resistance of the metal wire; the temperature of the heat-conducting metal wire is further controlled. At the outlet of the drafting hot box, the heat-conducting metal wire is correspondingly placed in the middle of the wire separator, when broken filaments or doubled filaments occur on fibers coming out of the drafting hot box, the broken filaments or the doubled filaments pass through the heat-conducting metal wire and are fused on the metal wire, and the continuity and stability of subsequent drafting are ensured. According to the invention, the production efficiency can be improved, the labor input is greatly saved, the labor cost is saved, the labor intensity of workers is reduced, the end breakage rate in the fiber production process is reduced, and the stability of fiber production is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of polymer material preparation, and specifically relates to a device and method for automatically removing hair fibers, which can reduce the breakage rate in the fiber production process and improve the stability of fiber production. Background Art

[0002] The three major high-tech materials in the 21st century include ultra-high molecular weight polyethylene fiber, aramid and carbon fiber. In China, ultra-high molecular weight polyethylene fiber technology and products are the most mature. This product is widely used in various industries for its excellent properties such as high strength, high modulus and high orientation.

[0003] In the past decade, the industrialization degree of domestic ultra-high molecular weight polyethylene fiber has been greatly improved, and a comprehensive breakthrough has been achieved in dry and wet technology in industrialization technology. The performance indicators of the products have been improved, but they still cannot form a competitive advantage with foreign high-end products. At the same time, after industry research, we found that the operating rate of high-performance polyethylene fiber production enterprises is generally not high, and the product yield rate is relatively low compared with foreign countries. Especially in the production of high-end fibers, excessive pursuit of high performance has caused the product success rate to be relatively low, which is mainly manifested in the uneven fiber fineness index, the poor stable drafting of fine denier finished silk, and the easy occurrence of hair and broken ends, which restricts the product yield rate and production stability.

[0004] Application number 201910067957.0, application date 2019.01.24, publication number CN109554766A, patent name "A floating silk automatic removal device" discloses a floating silk automatic removal device, which includes a cocoon receiving channel located on the lower side of the square cluster transfer channel of the cocooning machine, a first brush roller located on the rear side of the cocoon receiving channel and polishing the cocoons, a first needle clothing roller whose array needle rotating area interferes with the bristles of the first brush roller, and a first needle clothing swing roller that interferes with the first needle clothing roller through the misalignment of the array needles. The floating silk automatic removing device for the cocoon decoction machine is provided with a first brush roller which can entangle the floating silk of the cocoon with the bristles of the brush roller, thereby transferring the floating silk of the cocoon. Then, the first needle clothing roller is used to remove the residual silk of the cocoon adhered to and entangled by the bristles. Then, the swinging first needle clothing swing roller is used to remove and throw out the residual silk of the cocoon attached to the array needles of the needle clothing roller along the bending direction of the array needles of the first needle clothing roller. The continuous removal of the residual silk can ensure that the decoction machine can continuously perform the cocoon polishing operation.

[0005] Application number 200810236061.2, application date 2008.11.25, publication number CN101736459A, patent name "Fiber removal device on the needle plate of a roving machine" discloses a fiber removal device on the needle plate of a roving machine, the device includes a brush fixedly arranged below the needle plate, and the brush head of the brush is arranged upward. When the needle plate moves in the return screw guide groove, it contacts the brush head of the brush, and the hemp fibers on the needle plate can be brushed off by the brush. The removal device can automatically remove the hemp fibers stuck on the needle plate, ensuring the smooth operation of the needle plate, and basically does not require manual removal by the operator.

[0006] Application number 201210395661.X, application date 2012.10.18, publication number CN102995379A, patent name "A fiber remover", discloses a fiber remover, including an exhaust duct and a guide duct, the exhaust duct and the guide duct are relatively arranged on both sides of the textile, the opening of the exhaust duct is opposite to the opening of the guide duct, and a filter and an exhaust fan are arranged in the exhaust duct. The present invention can remove excess fibers on textiles, and textile machinery malfunctions due to fibers.

[0007] Application number 201910922149.8, application date 2019.09.27, publication number CN110803586B, patent name "A fully automatic removal device for winding yarn of a wire drum" discloses a fully automatic removal device for winding yarn of a wire drum, including a first frame, a second frame and a third frame, the upper end of the first frame is fixedly connected with a first linear slide and a first motor, the first motor is located on one side of the first linear slide, the outer surface of the first motor close to the first linear slide is fixedly connected with a first coupling, the outer surface of one side of the first coupling is fixedly connected with a first ball screw, one end of the first ball screw is connected to the first linear slide, the upper outer surface of the first linear slide is provided with an expansion seat, the upper outer surface of the expansion seat is penetrated by a push-pull rod, and the outer surface of one side of the expansion seat is fixedly connected with a first cylinder. The present invention is mainly directed to a fully automatic removal device for winding yarn of a wire drum, the device structure can improve production efficiency, greatly save labor input, save labor costs, and reduce labor intensity. Summary of the invention

[0008] The purpose of the present invention is to provide an automatic lint removal device and method to solve the problem of lint or twisted fibers that may be generated during the subsequent stretching process of the fiber, and to improve the fiber yield. The method can save labor input, save labor costs, reduce labor intensity, improve the stability of the device operation and the product yield, and the key is to improve the safety of operation, and is particularly suitable for the continuous fiber stretching production section after spinning.

[0009] The main technical content of the present invention is a device for automatically removing hair, characterized in that it includes a plurality of heat-conducting metal wires arranged side by side, and the two ends of each heat-conducting metal wire are fixed on a rotatable rubber rod, and the rubber rod is fixed on a drawing device or a drawing hot box; the plurality of heat-conducting metal wires arranged side by side can rotate with the rubber rod in the gap between adjacent stretched fiber wires; the heat-conducting metal wires are connected to a DC weak power supply, an adjustable resistor and a control system.

[0010] Furthermore, the rubber rod is grooved at the upper and lower parts, and the two ends of the heat-conducting metal wire are embedded in the groove of the rubber rod embedded with temperature-resistant ceramic material and connected to the metal wire, and the lead-out metal wire is connected to the DC weak current power supply, adjustable resistor and control system.

[0011] Furthermore, the rotation angle of the heat-conducting metal wire is 30-150° with the fiber travel direction, preferably 60-120°, and most preferably 90°.

[0012] Furthermore, the cross section of the rubber rod is circular or regular polygonal, preferably circular, so that the rubber rod can be easily rotated to drive the heat-conducting metal wire to rotate.

[0013] Furthermore, the heat-conducting metal wire has a diameter of 0.1-1 mm, preferably 0.1-0.5 mm; the metal material can be a conventional heat-conducting metal material that is not easy to melt, preferably iron, iron-chromium-aluminum alloy, nickel-chromium alloy or aluminum-nickel-iron alloy.

[0014] Furthermore, the DC weak current power supply has a voltage range of 0-36V.

[0015] The present invention also provides a method for automatically removing lint, which is performed by using the above-mentioned automatic lint removal device. The filament separator arranges the long fibers neatly one by one, passes through a multi-roller drawing machine and a drawing hot box, and an automatic lint removal device is arranged at the outlet of the drawing device or the drawing hot box. When the lint or cross-entangled fibers generated by the long fibers during the hot drawing process pass through the device, the lint or cross-entangled fibers will be melted by the heat-conducting metal wire to prevent them from being entangled on the multi-roller drawing machine during the subsequent stretching process. The melted lint will enter the next-level drawing hot box along with the multi-roller drawing machine and melt inside the drawing hot box.

[0016] Furthermore, an automatic lint removal device is provided at the outlet of each hot drafting box of the multi-stage drafting to avoid the occurrence of lint breakage caused by lint winding around the roller.

[0017] Furthermore, the device for automatically removing the hair is placed before or after the wire guide frame.

[0018] Furthermore, the drawing speed ranges from 0 to 50 m / min. The drawing speed is affected by the fiber stretching effect, the surface temperature of the heat-conducting metal wire, and the thermal radiation. The preferred drawing speed is 10-30 m / min. The fineness range is controlled at 0 to 100D. The thicker the wire bundle, the longer the melting time, which is not conducive to cleaning the hair. Instead, it will cause the heat-conducting metal wire to be broken by the wire bundle. The preferred fiber fineness is 20D to 50D. The distance between the wire bundles is controlled to be not less than 10mm. The larger the distance between the wire bundles, the better the effect of cleaning the hair. Due to equipment and space limitations, the distance between the wire bundles is not less than 10mm.

[0019] The present invention sets a heat-conducting metal wire at the outlet of the drawing device or the drawing hot box, adopts an independent weak current system, adds a controllable metal wire for adjusting the current on the main line, controls the current of the heat-conducting metal wire by adjusting the resistance of the metal wire, and then controls the temperature of the heat-conducting metal wire. At the outlet of the drawing hot box, the heat-conducting metal wire is placed in the middle of the gap of the wire bundle, and the heat-conducting metal wire is perpendicular or at a certain inclination angle to the direction of fiber travel. When the fiber coming out of the drawing hot box has fuzz or strands, the fuzz or strands will pass through the heat-conducting metal wire and fuse on the metal wire, ensuring the continuity and stability of subsequent drawing. When entering the winding link, adding a device for automatically removing fuzz can effectively prevent the entanglement and strands of long fibers on the wire guide frame, and reduce the fiber breakage rate.

[0020] After the filaments or cross-entangled fibers generated by the long fiber in the hot drawing process of the method of the present invention pass through the device, the filaments or the entangled fibers will be melted by the heat-conducting metal wire to prevent them from being entangled on the multi-roller drawing machine during the subsequent stretching process. The filaments after the melt-off will enter the next-stage drawing hot box with the multi-roller drawing machine and melt inside the drawing hot box. The material of the heat-conducting metal wire is determined according to the glass transition temperature of the fiber. When the filaments after the melt-off enter the next-stage drawing hot box, they will shrink due to the heat, and gradually melt into points and adhere to the bundled fibers, and be carried away by the bundled fibers or fall in the hot box to avoid being entangled with the rollers during the subsequent drawing process.

[0021] In the method of the present invention, when the long fibers enter the winding link, an automatic lint removal device is added, which can effectively prevent the long fibers from being entangled and doubling on the wire guide frame, and reduce the fiber breakage rate. When the fibers enter the winding link, they often get entangled with individual lints in other bundles during the fiber transportation process, and finally form a plying and doubling situation; or individual broken filaments in the bundle will float and entangle on the wire guide frame, making it difficult to wind in the filaments, or even breaking. Adding an automatic lint removal device in front of the wire guide frame can quickly deal with the occurrence of lint and doubling, reduce the fiber breakage rate, and improve production efficiency.

[0022] The present invention has the following remarkable features: compared with the existing long fiber drawing process, due to the introduction of equipment for automatically removing lint, the lint and roller entanglement phenomena occurring in the fiber processing process are greatly reduced, the filament twisting phenomenon occurring in the winding process is basically eliminated, the fiber yield is greatly improved, and the fiber performance indicators are basically not affected. The installation of this equipment can improve production efficiency, greatly save labor input, save labor costs, and reduce labor intensity. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The figure is a schematic flow chart of a method for automatically removing hair according to an embodiment of the present invention.

[0024] Figure 2 Schematic diagram of the cross-sectional structure of the rubber rod in an embodiment of the present invention.

[0025] In the figure, 1. multi-stage drawing roller; 2. wire guide frame; 3. drawing hot box; 4. hair removal equipment; 5. rubber rod; 6. heat-conducting metal wire; 7. metal wire. Implementation

[0026] The present invention is described in detail below in conjunction with embodiments and drawings. Example

[0027] Take ultra-high molecular weight polyethylene fiber as an example to illustrate its effect of removing hair and yarn.

[0028] The automatic hair removal device is provided with a plurality of heat-conducting metal wires 6 arranged side by side according to the number of the wire bundles, and the two ends of each heat-conducting metal wire 6 are fixed on a rotatable rubber rod 5 (see attached Figure 2 ), the rubber rod 5 is fixed on the drawing equipment or the drawing hot box 3; a plurality of heat-conducting metal wires 6 arranged side by side can rotate with the rubber rod 5 in the gap between adjacent stretched fiber filaments; the rubber rod 3 is grooved in the upper and lower parts, and the two ends of the heat-conducting metal wire 6 are embedded in the groove of the rubber rod embedded with the temperature-resistant ceramic material and connected with the metal wire 7, and the lead-out metal wire 7 is connected with a DC weak power supply (power supply voltage range 0-36V), an adjustable resistor and a control system (not marked in the figure).

[0029] In the embodiment, the cross-section of the rubber rod 5 is circular, which makes it convenient to rotate the rubber rod to drive the heat-conducting metal wire to rotate; the rotation angle of the heat-conducting metal wire 6 is 90° to the fiber travel direction; the metal material of the heat-conducting metal wire can be a conventional heat-conducting metal material that is not easy to melt, selected from iron, iron-chromium-aluminum alloy, nickel-chromium alloy or aluminum-nickel-iron alloy.

[0030] Reference Figure 1First, the device is installed at the outlet of the drawing hot box 3 on one side of the multi-roller drawing machine, and the distance between the wire guide frame 2 and the wire guide frame is controlled at 10~50mm. Weak current is turned on, and the adjustable resistor is adjusted to control the temperature of the surface of the heat-conducting metal wire to a suitable temperature point, and specific test work is started. The raw wire on the wire frame is introduced into the multi-roller drawing machine 1 through the wire separation frame, and enters the drawing hot box 3 for hot stretching. The fiber bundle outlet enters the next stage of stretching process through the wire separation frame. By adjusting the drawing ratio and the temperature of the drawing hot box, hairy wires or strands appear during the drawing process, and the effect of removing hairy wires is verified.

[0031] Operating conditions: tow speed is 1~30m / min, fiber fineness is 10~100D, cross-sectional area of ​​heat conductive wire is 0.05~0.1mm 2 The diameter of the metal wire is 0.25~0.35mm. The surface temperature and the spacing between the wire bundles are adjusted according to the test conditions. The effect of fiber treatment on the hairy wire or the parallel wire is detected, and the number of times the winding roller or the parallel wire occurs is used for judgment. Example 1

[0032] The metal wire is iron wire, and the cross-sectional area of ​​the heat-conducting metal wire is 0.05mm 2 , wire diameter 0.25mm, fiber fineness 10D, tow speed 1.2~30m / min, tow spacing 10mm, and statistics on roller winding and breakage.

[0033] Summary of roller winding and broken ends within 1 hour

[0034] Example 2 The metal wire is made of iron-chromium-aluminum alloy, and the cross-sectional area of ​​the heat-conducting metal wire is 0.1mm 2 , wire diameter 0.35mm fiber fineness 50D, tow speed 1.2~30m / min, tow spacing 10mm, and statistics on roller winding and breakage.

[0035] Summary of roller winding and broken ends within 1 hour

[0036] Example 3 The metal wire is made of nickel-chromium alloy, and the cross-sectional area of ​​the thermal conductive wire is 0.06mm 2 , wire diameter 0.27mm, fiber fineness 100D, tow speed 1.2~30m / min, tow spacing 15mm, and statistics on roller winding and breakage.

[0037] Summary of roller winding and broken ends within 1 hour

[0038] Example 4 The metal wire is made of aluminum-nickel-iron alloy, and the cross-sectional area of ​​the thermal conductive wire is 0.06mm 2 , wire diameter 0.35mm, fiber fineness 50D, winding speed 10~30m / min, tow spacing 10mm, and statistics on doubling and breakage.

[0039] Summary of roller winding and broken ends within 1 hour

[0040] From the above examples, it can be clearly seen that the use of this method to deal with hairy fibers in the fiber production process can effectively reduce the probability of hairy fibers being entangled with rollers, avoid fiber breakage caused by roller entanglement and fiber doubling during fiber drawing, improve the fiber yield, and reduce the labor intensity of workers.

Claims

1. A device for automatically removing hair, characterized in that It includes a plurality of heat-conducting metal wires arranged side by side, both ends of each heat-conducting metal wire are fixed on a rotatable rubber rod, and the rubber rod is fixed on a drawing device or a drawing heat box; the plurality of heat-conducting metal wires arranged side by side can rotate in the gap between adjacent stretched fiber wires along with the rubber rod; the heat-conducting metal wires are connected to a DC weak current power supply, an adjustable resistor and a control system.

2. The device according to claim 1, characterized in that The upper and lower parts of the rubber rod are grooved, and the two ends of the heat-conducting metal wire are embedded in the groove of the rubber rod embedded with temperature-resistant ceramic material and connected to the metal wire. The lead-out metal wire is connected to the DC weak current power supply, adjustable resistor and control system.

3. The device according to claim 1 or 2, characterized in that The rotation angle of the heat-conducting metal wire is 30-150° with the fiber travel direction, preferably 60-120°, and most preferably 90°.

4. The device according to claim 1 or 2, characterized in that The cross section of the rubber rod is circular or regular polygonal, preferably circular.

5. The device according to claim 1, 2 or 3, characterized in that The diameter of the heat-conducting metal wire is 0.1-1 mm, and the metal material is a conventional heat-conducting metal material selected from iron, iron-chromium-aluminum alloy, nickel-chromium alloy or aluminum-nickel-iron alloy.

6. The device according to claim 1 or 2, characterized in that The DC weak current power supply has a voltage range of 0-36V.

7. A method for automatically removing hair, characterized in that The device described in any one of claims 1 to 6 is used to automatically remove filaments, and the wire separator arranges the long fibers neatly one by one, and passes through a multi-roller drawing machine and a drawing hot box. An automatic filament removal device is set at the outlet of the drawing device or the drawing hot box. When the filaments or cross-entangled fibers generated by the long fibers during the hot drawing process pass through the device, the filaments or cross-entangled fibers will be melted by the heat-conducting metal wire to prevent them from being entangled on the multi-roller drawing machine during the subsequent stretching process. The melted filaments will enter the next-level drawing hot box along with the multi-roller drawing machine and melt inside the drawing hot box.

8. The method according to claim 7, characterized in that At the outlet of each hot drafting box in multi-stage drafting, an automatic lint removal device is installed to avoid lint breakage caused by lint entanglement with rollers.

9. The method according to claim 7, characterized in that The automatic lint removal device is placed before or after the wire guide.

10. The method according to claim 7, characterized in that The fiber drawing speed ranges from 0 to 50 m / min, the fineness range is controlled at 0 to 100D, and the distance between the filament bundles is controlled to be no less than 10 mm.

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