WO2024125511A1 - Auxiliary air-laying device for forming alumina chopped fiber felt, and method - Google Patents

Auxiliary air-laying device for forming alumina chopped fiber felt, and method Download PDF

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Publication number
WO2024125511A1
WO2024125511A1 PCT/CN2023/138171 CN2023138171W WO2024125511A1 WO 2024125511 A1 WO2024125511 A1 WO 2024125511A1 CN 2023138171 W CN2023138171 W CN 2023138171W WO 2024125511 A1 WO2024125511 A1 WO 2024125511A1
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Prior art keywords
alumina
roller
chopped fiber
alumina chopped
needle
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PCT/CN2023/138171
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French (fr)
Chinese (zh)
Inventor
关克田
孙树人
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上海榕融新材料技术有限公司
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Priority claimed from CN202211603836.1A external-priority patent/CN115748105A/en
Priority claimed from CN202223358569.4U external-priority patent/CN219099497U/en
Application filed by 上海榕融新材料技术有限公司 filed Critical 上海榕融新材料技术有限公司
Publication of WO2024125511A1 publication Critical patent/WO2024125511A1/en

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  • the invention relates to an airflow-laying device and method for auxiliary alumina chopped fiber felt forming, belonging to the technical field of textile accessories.
  • Alumina fiber has the advantages of light weight, high temperature resistance (operating temperature is 1300-1700°C), good thermal stability, etc.
  • Alumina fiber felt can be used as a heat-resistant material for heat insulation and bonding parts in high-temperature furnaces and high-temperature pipelines.
  • the traditional preparation method of alumina fiber felt is high-temperature sintering.
  • alumina fiber shrinks by more than 30% during high-temperature heating, resulting in problems such as fiber being cut during the manufacturing process, uneven thickness/volume density, insufficient strength, and easy fiber entanglement and knotting.
  • the method of preparing alumina fiber into a net and then needle punching it can be used to prepare alumina fiber felt.
  • the traditional carding method is easy to break and comb into pieces during the carding process, and the surface density is in the range of 100-800g/ m2 , which cannot meet the subsequent needle punching conditions and cannot meet the requirements of high thickness of the net.
  • Alumina fibers are very brittle and have a high shrinkage rate when heated at high temperatures.
  • the traditional carding method causes the fibers to break and become crumbs during the carding process.
  • the surface density is in the range of 100-800g/ m2 , which cannot meet the subsequent needling conditions and cannot meet the requirements of high-thickness web formation.
  • the traditional method of preparing alumina fiber felt will result in waste of raw materials and many defects and unstable performance in the final product.
  • the present invention provides an air-laying device and method for assisting the formation of alumina chopped fiber mats. Based on the premise that the air-laying method causes less damage to the fibers and is applicable to a wide range of raw materials, the present invention avoids the damage to the fibers caused by the traditional carding method by introducing the air-laying method, so as to meet the needling conditions of the needle punching machine and the high-thickness web forming requirements, thereby ensuring high-quality and stable preparation of alumina chopped fiber mats. The present invention can effectively improve the production efficiency and production quality of alumina chopped fiber mats.
  • the first object of the present invention is to provide an auxiliary alumina chopped fiber felt forming airflow web forming device, comprising a cotton feeding trolley, the cotton feeding trolley is connected to a combing machine, the combing machine is connected to a high cotton box through a fan pipeline, a tunnel device is arranged below the high cotton box, a multi-row needle roller group composed of a plurality of needle rollers is arranged in the tunnel device, a negative pressure suction fan is arranged below the tunnel device, a conveying device is arranged between the negative pressure suction fan and the tunnel device, and the tunnel device A pressing roller is arranged at the outlet of the device, and a needling machine is arranged on one side of the conveying device.
  • the conveying device is a belt drive
  • the belt drive includes a conveyor belt
  • the conveyor belt is a mesh belt with a plurality of mesh holes formed thereon.
  • the cotton feeding trolley is equipped with a precise weighing mechanism, the cotton feeding trolley comprises a cotton feeding bin and a cotton feeding roller, the cotton feeding bin of the cotton feeding trolley is connected to the combing machine, and the alumina chopped yarn is fed into the combing machine through the cotton feeding roller of the cotton feeding trolley.
  • the bell mouth of the combing machine is connected to the fan duct to convey the alumina chopped yarn combed by the combing machine to the high cotton box;
  • the pressure roller is arranged at the outlet of the corridor device and located above the conveying device, and the conveying device is connected to the inlet of the needle loom.
  • the rotation directions of two adjacent needle rollers in the channel device are opposite.
  • the needle roller comprises a roller shaft, a roller cylinder and needle punctures, the roller shaft is inserted into the roller cylinder, and a plurality of needle punctures are evenly arranged on the outer surface of the roller.
  • the second object of the present invention is to provide a method for assisting the formation of alumina chopped strands, wherein the method adopts the auxiliary alumina chopped strands forming air-laid device, comprising the following steps:
  • the rotation speed of the needle roller described in step (3) is 200-600 r/min; the speed of the conveying device described in step (4) conveying the alumina chopped fiber web is 10 mm/min.
  • the frequency of the negative pressure suction fan described in step (3) is 5-20 Hz, and the length of the alumina chopped yarn described in step (1) is 10-90 mm.
  • the alumina chopped fiber mat in step (4) has a thickness of 8-23 mm, an area density of 800-1800 g/m 2 , and an area density fluctuation value of 1%-3%.
  • the present invention is provided with a negative pressure suction fan below the tunnel device, and a conveying device is provided between the negative pressure suction fan and the tunnel device.
  • the conveying device is belt-driven, and the conveyor belt is a mesh belt with a plurality of mesh holes.
  • the negative pressure suction fan can suck air from the tunnel device through the mesh belt, so that the alumina chopped yarn in the tunnel device falls onto the mesh belt to form a web; the present invention avoids the damage to the fibers caused by the traditional carding web forming method by introducing the airflow web forming method, so as to meet the needling conditions of the needle punching machine and the high thickness web forming requirements, thereby ensuring high quality.
  • Alumina chopped fiber mat can be prepared in large quantities and stably.
  • the alumina chopped fibers of the present invention are webbed through the needle roller group and the negative pressure suction mesh belt, which can effectively reduce the problem of alumina fibers being broken and squeezed into powder during the web-forming process, thereby solving the difficulty of alumina fibers being webbed.
  • the auxiliary airflow-laying device and method for forming alumina chopped fiber felt proposed in the present invention can effectively improve the production efficiency and production quality of alumina chopped fiber felt, and can increase the production efficiency by 10-20% compared with the traditional preparation method.
  • the product surface density can reach up to 1800g/ m2 , and the uniformity and stability of the product are significantly improved.
  • FIG1 is a schematic structural diagram of an auxiliary alumina chopped fiber mat forming air-laid device according to the present invention.
  • FIG2 is a perspective view of the air-laid device of the present invention (excluding the cotton feeding trolley, combing machine, fan duct and needle punching machine);
  • FIG. 3 is a three-dimensional view of the needle roller of the present invention.
  • FIG. 4 is a flow chart of the auxiliary alumina chopped fiber mat forming method of the present invention.
  • connection should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements.
  • connection can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements.
  • a first feature being “above” or “below” a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them.
  • a first feature being “above”, “above” and “above” a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature.
  • a first feature being “below”, “below” and “below” a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.
  • this embodiment provides an auxiliary alumina chopped fiber felt forming airflow web forming device, including a cotton feeding trolley 1, the cotton feeding trolley 1 is connected to a combing machine 2, the combing machine 2 is connected to a high cotton box 4 through a fan duct 3, a corridor device 6 is arranged below the high cotton box 4, a multi-row needle roller group composed of a plurality of needle rollers 5 is arranged in the corridor device 6, a negative pressure suction fan 9 is arranged below the corridor device 6, a conveying device 8 is arranged between the negative pressure suction fan 9 and the corridor device 6, a pressure roller 7 is arranged at the outlet of the corridor device 6, and a needle machine 10 is arranged on one side of the conveying device 8.
  • the conveying device 8 is a belt drive, which includes a conveyor belt.
  • the conveyor belt is a mesh belt with a plurality of mesh holes.
  • the negative pressure suction fan 9 can suck air into the channel device 6 through the mesh belt, so that the alumina chopped yarn in the channel device 6 falls onto the mesh belt to form a net.
  • the cotton feeding trolley 1 is equipped with a precise weighing mechanism, and the cotton feeding trolley 1 includes a cotton feeding bin (not shown in the figure) and a cotton feeding roller (not shown in the figure).
  • the cotton feeding bin of the cotton feeding trolley 1 is connected to the combing machine 2, and the alumina chopped yarn is fed into the combing machine 2 through the cotton feeding roller of the cotton feeding trolley 1.
  • the bell mouth of the combing machine 2 is connected to the fan duct 3 to transport the alumina chopped yarn combed by the combing machine 2 to the high-cotton box 4.
  • the pressing roller 7 is arranged at the outlet of the tunnel device 6 and located above the conveying device 8, and the conveying device 8 is connected to the inlet of the needling machine 10.
  • the rotation directions of two adjacent needle rollers 5 in the channel device 6 are opposite. Specifically, the rotation directions of two adjacent needle rollers 5 in the horizontal direction in the channel device 6 are opposite, and the rotation directions of two adjacent needle rollers 5 in the vertical direction are also opposite.
  • the rotation speed of the needle roller 5 is 200-600r/min, preferably 300-400r/min.
  • the needle roller group composed of a plurality of needle rollers 5 in the tunnel device 6 has four rows.
  • the needle roller 5 includes a roller shaft 51 , a roller cylinder 52 and a needle punch 53 , the roller shaft 51 is inserted into the roller cylinder 52 , and a plurality of needle punches 53 are evenly arranged on the outer surface of the roller cylinder 52 .
  • the length of the alumina chopped yarn is 10-90 mm, preferably 30-60 mm; the raw material is domestic F72, C82 or M99 alumina fiber, preferably F72 and C82 domestic alumina fibers.
  • the working principle of this embodiment is as follows: the alumina chopped yarn is accurately weighed by the cotton feeding trolley 1 and sent to the combing machine 2 for combing.
  • the combed yarn is sent to the high cotton box 4 through the fan pipe 3, and then dispersed and falls to the bottom mesh belt 9 in the channel device 6 through an array of needle rollers 5 to form a mesh.
  • this embodiment provides a method for forming an auxiliary alumina chopped strand mat, wherein the method adopts an auxiliary alumina chopped strand mat forming air-laid device provided in Example 1, and comprises the following steps:
  • the device and method for auxiliary alumina chopped fiber felt forming airflow web forming of the present invention realizes the preparation of heavy and thick alumina chopped fiber felt and improves the uniformity and stability in the preparation process of alumina chopped fiber felt.
  • a process for preparing alumina chopped fiber mat :
  • the conveying device conveys the alumina chopped fiber web at a speed of 10 mm/min, and it is sent to the needle loom for shaping by the pressure roller and then rolled up to obtain the alumina chopped fiber felt of Example 3.
  • a process for preparing alumina chopped fiber mat :
  • the conveying device conveyed the alumina chopped fiber web at a speed of 10 mm/min, and it was sent to the needle punching setting after being shaped by the pressure roller, and then rolled up, so as to obtain the alumina chopped fiber felt of Control Example 1.
  • a process for preparing alumina chopped fiber mat :
  • the conveying device conveys the alumina chopped fiber web at a speed of 10 mm/min, and after being shaped by the pressure roller, it is sent to the needle punching shaping and then rolled up, and the alumina chopped fiber felt of Control Example 2 is obtained.
  • a process for preparing alumina chopped fiber mat :
  • the conveying device conveyed the alumina chopped fiber web at a speed of 10mm/min, and it was sent to the needle punching setting after being shaped by the pressure roller and then rolled up, so as to obtain the alumina chopped fiber felt of Control Example 3.
  • a process for preparing alumina chopped fiber mat :
  • the conveying device conveys the alumina chopped fiber web at a speed of 20mm/min, and after being shaped by the pressure roller, it is sent to the needle punching shaping and then rolled up, so as to obtain the alumina chopped fiber felt of Example 4.
  • a process for preparing alumina chopped fiber mat :
  • the conveying device conveys the alumina chopped fiber web at a speed of 10mm/min, and it is sent to the needle punching setting after being shaped by the pressure roller, and then rolled up, so as to obtain the alumina chopped fiber felt of Control Example 4.
  • a process for preparing alumina chopped fiber mat :
  • the device and method for auxiliary alumina chopped fiber felt forming airflow web forming of the present invention can prepare alumina chopped fiber felts of different surface densities and thicknesses by selecting raw materials and adjusting process parameters.
  • the surface density and thickness of the alumina chopped fiber felt prepared by the present invention exceed 800g/ m2 and 12mm prepared by the traditional method, and the preparation of large and heavy alumina chopped fiber felt is achieved.
  • the surface density fluctuation value (CV value) is much lower than that of the existing process, indicating that the preparation method provided by the present invention improves the uniformity and stability of the web felt.

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Abstract

The present invention belongs to the technical field of textile accessories. Disclosed are an auxiliary air-laying device for forming an alumina chopped fiber felt, and a method. The device comprises: a cotton feeding cart, wherein the cotton feeding cart is connected to a combing machine; the combing machine is connected to a high cotton box by means of a fan pipe; a channel device is arranged below the high cotton box, and a plurality of rows of spiked roller groups composed of several spiked rollers are arranged in the channel device; a negative-pressure suction fan is arranged below the channel device; a conveyor device is arranged between the negative-pressure suction fan and the channel device; and a press roller is arranged at an outlet of the channel device. The present invention avoids damage to fibers caused by conventional carding, so as to meet the needling conditions of a needling machine and high-thickness web forming requirements, thereby ensuring high-quality and stable preparation of an alumina chopped fiber felt; and the present invention can effectively solve the problem of alumina fibers being broken and squeezed into powder during web forming, and can effectively improve the production efficiency and production quality of the alumina chopped fiber felt.

Description

一种辅助氧化铝短切纤维毡成形气流成网装置及方法A device and method for assisting alumina chopped fiber mat forming air-laid web 技术领域Technical Field
本发明涉及一种辅助氧化铝短切纤维毡成形气流成网装置及方法，属于纺织配件技术领域。The invention relates to an airflow-laying device and method for auxiliary alumina chopped fiber felt forming, belonging to the technical field of textile accessories.
背景技术Background technique
氧化铝纤维具有质量轻、耐高温(使用温度在1300-1700℃)、热稳定性好等优点，制备成氧化铝纤维毡可作为耐热材料应用于高温炉和高温管道中的隔热和粘接部件。传统氧化铝纤维毡的制备方法是高温烧结法，然而氧化铝纤维在高温加热过程中会收缩30％以上，导致纤维在制造工序中被切断、厚度/体积密度不匀、强度不够且纤维易缠绕打结等问题。Alumina fiber has the advantages of light weight, high temperature resistance (operating temperature is 1300-1700℃), good thermal stability, etc. Alumina fiber felt can be used as a heat-resistant material for heat insulation and bonding parts in high-temperature furnaces and high-temperature pipelines. The traditional preparation method of alumina fiber felt is high-temperature sintering. However, alumina fiber shrinks by more than 30% during high-temperature heating, resulting in problems such as fiber being cut during the manufacturing process, uneven thickness/volume density, insufficient strength, and easy fiber entanglement and knotting.
为避免氧化铝纤维毡制备过程中高温烧结带来的不良影响，可采用将氧化铝纤维制备成网再通过针刺的方法制备氧化铝纤维毡的方法。但由于氧化铝纤维具有脆性大的特点，传统的梳理成网法在梳理过程中纤维易断裂梳理成碎末，面密度在100-800g/m2范围内，无法满足后续针刺条件的同时且无法满足高厚度成网要求。In order to avoid the adverse effects of high temperature sintering during the preparation of alumina fiber felt, the method of preparing alumina fiber into a net and then needle punching it can be used to prepare alumina fiber felt. However, due to the brittleness of alumina fiber, the traditional carding method is easy to break and comb into pieces during the carding process, and the surface density is in the range of 100-800g/ m2 , which cannot meet the subsequent needle punching conditions and cannot meet the requirements of high thickness of the net.
发明内容Summary of the invention
[技术问题][technical problem]
氧化铝纤维脆性大，高温加热收缩率高，传统的梳理成网法在梳理过程中纤维易断裂梳理成碎末，面密度在100-800g/m2范围内，无法满足后续针刺条件的同时且无法满足高厚度成网要求，基于传统氧化铝纤维毡制备的方法会造成原料的浪费和最终产品瑕疵多、性能不稳定。Alumina fibers are very brittle and have a high shrinkage rate when heated at high temperatures. The traditional carding method causes the fibers to break and become crumbs during the carding process. The surface density is in the range of 100-800g/ m2 , which cannot meet the subsequent needling conditions and cannot meet the requirements of high-thickness web formation. The traditional method of preparing alumina fiber felt will result in waste of raw materials and many defects and unstable performance in the final product.
[技术方案][Technical solutions]
为解决上述问题，本发明提供了一种辅助氧化铝短切纤维毡成形气流成网装置及方法，基于气流成网法对纤维损伤少，适用原料广的前提下，本发明通过引入气流成网的方法避免了传统梳理成网对纤维造成的伤害，以满足针刺机针刺条件和高厚度成网需求进而确保高质量、稳定制备氧化铝短切纤维毡。本发明能有效提高氧化铝短切纤维毡的生产效率和生产质量。In order to solve the above problems, the present invention provides an air-laying device and method for assisting the formation of alumina chopped fiber mats. Based on the premise that the air-laying method causes less damage to the fibers and is applicable to a wide range of raw materials, the present invention avoids the damage to the fibers caused by the traditional carding method by introducing the air-laying method, so as to meet the needling conditions of the needle punching machine and the high-thickness web forming requirements, thereby ensuring high-quality and stable preparation of alumina chopped fiber mats. The present invention can effectively improve the production efficiency and production quality of alumina chopped fiber mats.
本发明的第一个目的在于提供一种辅助氧化铝短切纤维毡成形气流成网装置，包括喂棉小车，所述喂棉小车连接有精梳机，所述精梳机通过风机管道连接有高棉箱，所述高棉箱的下方设置有甬道装置，所述甬道装置内设置有由若干个针辊组成的多排针辊组，所述甬道装置的下方设置有负压吸风机，所述负压吸风机与甬道装置之间设置有输送装置，所述甬道装 置的出口处设置有压辊，所述输送装置的一侧设置针刺机。The first object of the present invention is to provide an auxiliary alumina chopped fiber felt forming airflow web forming device, comprising a cotton feeding trolley, the cotton feeding trolley is connected to a combing machine, the combing machine is connected to a high cotton box through a fan pipeline, a tunnel device is arranged below the high cotton box, a multi-row needle roller group composed of a plurality of needle rollers is arranged in the tunnel device, a negative pressure suction fan is arranged below the tunnel device, a conveying device is arranged between the negative pressure suction fan and the tunnel device, and the tunnel device A pressing roller is arranged at the outlet of the device, and a needling machine is arranged on one side of the conveying device.
本发明的一种实施方式中，所述输送装置为带传动，所述带传动包括传送带，所述传送带为网带，其上开设有若干个网孔。In one embodiment of the present invention, the conveying device is a belt drive, and the belt drive includes a conveyor belt, and the conveyor belt is a mesh belt with a plurality of mesh holes formed thereon.
本发明的一种实施方式中，所述喂棉小车配有精准称重机构，喂棉小车包括喂棉仓和喂棉罗拉，喂棉小车的喂棉仓与精梳机相连，通过喂棉小车的喂棉罗拉将氧化铝短切纱喂入精梳机。In one embodiment of the present invention, the cotton feeding trolley is equipped with a precise weighing mechanism, the cotton feeding trolley comprises a cotton feeding bin and a cotton feeding roller, the cotton feeding bin of the cotton feeding trolley is connected to the combing machine, and the alumina chopped yarn is fed into the combing machine through the cotton feeding roller of the cotton feeding trolley.
本发明的一种实施方式中，所述精梳机的喇叭口与风机管道相连，将精梳机梳理的氧化铝短切纱输送至高棉箱；所述压辊设置于所述甬道装置出口处且位于所述输送装置上方，所述输送装置与针刺机的入口相连。In one embodiment of the present invention, the bell mouth of the combing machine is connected to the fan duct to convey the alumina chopped yarn combed by the combing machine to the high cotton box; the pressure roller is arranged at the outlet of the corridor device and located above the conveying device, and the conveying device is connected to the inlet of the needle loom.
本发明的一种实施方式中，所述甬道装置内相邻的两个针辊的旋转方向相反。In one embodiment of the present invention, the rotation directions of two adjacent needle rollers in the channel device are opposite.
本发明的一种实施方式中，所述针辊包括辊轴、辊筒和针刺，所述辊筒内穿设有辊轴，所述辊筒的外表面均匀设置有若干个针刺。In one embodiment of the present invention, the needle roller comprises a roller shaft, a roller cylinder and needle punctures, the roller shaft is inserted into the roller cylinder, and a plurality of needle punctures are evenly arranged on the outer surface of the roller.
本发明的第二个目的在于提供一种辅助氧化铝短切纤维毡成形的方法，所述方法是采用所述的辅助氧化铝短切纤维毡成形气流成网装置，包括以下步骤：The second object of the present invention is to provide a method for assisting the formation of alumina chopped strands, wherein the method adopts the auxiliary alumina chopped strands forming air-laid device, comprising the following steps:
(1)氧化铝短切纱经过喂棉小车精准称重送至精梳机内梳理；(1) The alumina chopped yarn is accurately weighed by the cotton feeding trolley and sent to the combing machine for combing;
(2)梳理后的纱经风机管道送至高棉箱；(2) The combed yarn is sent to the cotton box through the fan duct;
(3)再经过数组针辊在甬道装置内分散并由负压吸风机吸取下落至底部网带成网；(3) It is then dispersed in the tunnel device through an array of needle rollers and sucked down by a negative pressure suction fan to the bottom mesh belt to form a net;
(4)经过压辊定型后由输送装置传送至针刺机针刺成形得到氧化铝短切纤维毡。(4) After being shaped by a pressure roller, it is transferred to a needle punching machine by a conveying device for needle punching to obtain alumina chopped fiber felt.
本发明的一种实施方式中，步骤(3)所述的针辊的转速为200-600r/min；步骤(4)所述的输送装置输送氧化铝短切纤维网的速度为10mm/min。In one embodiment of the present invention, the rotation speed of the needle roller described in step (3) is 200-600 r/min; the speed of the conveying device described in step (4) conveying the alumina chopped fiber web is 10 mm/min.
本发明的一种实施方式中，步骤(3)所述的负压吸风机的频率为5-20Hz，步骤(1)所述的氧化铝短切纱长度为10-90mm。In one embodiment of the present invention, the frequency of the negative pressure suction fan described in step (3) is 5-20 Hz, and the length of the alumina chopped yarn described in step (1) is 10-90 mm.
本发明的一种实施方式中，步骤(4)所述的氧化铝短切纤维毡的厚度为8-23mm，面密度为800-1800g/m2，面密度波动值为1％-3％。In one embodiment of the present invention, the alumina chopped fiber mat in step (4) has a thickness of 8-23 mm, an area density of 800-1800 g/m 2 , and an area density fluctuation value of 1%-3%.
有益效果Beneficial Effects
(1)基于气流成网法对纤维损伤少，适用原料广的前提下，本发明在甬道装置的下方设置有负压吸风机，所述负压吸风机与甬道装置之间设置有输送装置，输送装置为带传动，且传送带为网带，其上开设有若干个网孔，负压吸风机能够透过所述网带对甬道装置内进行吸风，使甬道装置内的氧化铝短切纱下落至网带上成网；本发明通过引入气流成网的方法避免了传统梳理成网对纤维造成的伤害，以满足针刺机针刺条件和高厚度成网需求进而确保高质 量、稳定制备氧化铝短切纤维毡。(1) Based on the premise that the airflow web forming method causes less damage to the fibers and is applicable to a wide range of raw materials, the present invention is provided with a negative pressure suction fan below the tunnel device, and a conveying device is provided between the negative pressure suction fan and the tunnel device. The conveying device is belt-driven, and the conveyor belt is a mesh belt with a plurality of mesh holes. The negative pressure suction fan can suck air from the tunnel device through the mesh belt, so that the alumina chopped yarn in the tunnel device falls onto the mesh belt to form a web; the present invention avoids the damage to the fibers caused by the traditional carding web forming method by introducing the airflow web forming method, so as to meet the needling conditions of the needle punching machine and the high thickness web forming requirements, thereby ensuring high quality. Alumina chopped fiber mat can be prepared in large quantities and stably.
(2)本发明的氧化铝短切纤维通过所述针辊组和负压吸风网带成网能有效减少氧化铝纤维在成网过程中的断裂挤压成粉末问题，解决了氧化铝纤维成网困难的难点。(2) The alumina chopped fibers of the present invention are webbed through the needle roller group and the negative pressure suction mesh belt, which can effectively reduce the problem of alumina fibers being broken and squeezed into powder during the web-forming process, thereby solving the difficulty of alumina fibers being webbed.
(3)本发明提出的一种辅助氧化铝短切纤维毡成形气流成网装置及方法能有效提高氧化铝短切纤维毡的生产效率和生产质量，较传统制备方法能提升10-20％的生产效率，产品面密度最高可达1800g/m2且产品的均一性和稳定性有显著提升。(3) The auxiliary airflow-laying device and method for forming alumina chopped fiber felt proposed in the present invention can effectively improve the production efficiency and production quality of alumina chopped fiber felt, and can increase the production efficiency by 10-20% compared with the traditional preparation method. The product surface density can reach up to 1800g/ m2 , and the uniformity and stability of the product are significantly improved.
附图说明BRIEF DESCRIPTION OF THE DRAWINGS
图1为本发明辅助氧化铝短切纤维毡成形气流成网装置的结构示意图；FIG1 is a schematic structural diagram of an auxiliary alumina chopped fiber mat forming air-laid device according to the present invention;
图2为本发明气流成网装置的立体图(去除喂棉小车、精梳机、风机管道和针刺机)；FIG2 is a perspective view of the air-laid device of the present invention (excluding the cotton feeding trolley, combing machine, fan duct and needle punching machine);
图3为本发明所述针辊的立体图。FIG. 3 is a three-dimensional view of the needle roller of the present invention.
图4是本发明辅助氧化铝短切纤维毡成形方法的流程图。FIG. 4 is a flow chart of the auxiliary alumina chopped fiber mat forming method of the present invention.
其中：1、喂棉小车；2、精梳机；3、风机管道；4、高棉箱；5、针辊；51、辊轴；52、辊筒；53、针刺；6、甬道装置；7、压辊；8、输送装置；9、负压吸风机；10、针刺机。Among them: 1. Cotton feeding trolley; 2. Combing machine; 3. Fan duct; 4. Cotton box; 5. Needle roller; 51. Roller shaft; 52. Roller; 53. Needle punching; 6. Channel device; 7. Pressing roller; 8. Conveying device; 9. Negative pressure suction fan; 10. Needle punching machine.
具体实施方式Detailed ways
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
在本发明中，除非另有明确的规定和限定，术语“相连”、“连接”、“固定”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本发明中的具体含义。In the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
在本发明中，除非另有明确的规定和限定，第一特征在第二特征之“上”或之“下”可以包括第一和第二特征直接接触，也可以包括第一和第二特征不是直接接触而是通过它们之间的另外的特征接触。而且，第一特征在第二特征“之上”、“上方”和“上面”包括第一特征在第二特征正上方和斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”包括第一特征在第二特征正下方和斜下方，或仅仅表示第一特征水平高度小于第二特征。 In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.
实施例1Example 1
如图1-3所示，本实施例提供了一种辅助氧化铝短切纤维毡成形气流成网装置，包括喂棉小车1，所述喂棉小车1连接有精梳机2，所述精梳机2通过风机管道3连接有高棉箱4，所述高棉箱4的下方设置有甬道装置6，所述甬道装置6内设置有由若干个针辊5组成的多排针辊组，所述甬道装置6的下方设置有负压吸风机9，所述负压吸风机9与甬道装置6之间设置有输送装置8，所述甬道装置6的出口处设置有压辊7，所述输送装置8的一侧设置针刺机10。As shown in Figures 1-3, this embodiment provides an auxiliary alumina chopped fiber felt forming airflow web forming device, including a cotton feeding trolley 1, the cotton feeding trolley 1 is connected to a combing machine 2, the combing machine 2 is connected to a high cotton box 4 through a fan duct 3, a corridor device 6 is arranged below the high cotton box 4, a multi-row needle roller group composed of a plurality of needle rollers 5 is arranged in the corridor device 6, a negative pressure suction fan 9 is arranged below the corridor device 6, a conveying device 8 is arranged between the negative pressure suction fan 9 and the corridor device 6, a pressure roller 7 is arranged at the outlet of the corridor device 6, and a needle machine 10 is arranged on one side of the conveying device 8.
进一步地，所述输送装置8为带传动，所述带传动包括传送带，所述传送带为网带，其上开设有若干个网孔，负压吸风机9能够透过所述网带对甬道装置6内进行吸风，使甬道装置6内的氧化铝短切纱下落至网带上成网。Furthermore, the conveying device 8 is a belt drive, which includes a conveyor belt. The conveyor belt is a mesh belt with a plurality of mesh holes. The negative pressure suction fan 9 can suck air into the channel device 6 through the mesh belt, so that the alumina chopped yarn in the channel device 6 falls onto the mesh belt to form a net.
可选地，所述喂棉小车1配有精准称重机构，喂棉小车1包括喂棉仓(图中未示出)和喂棉罗拉(图中未示出)，喂棉小车1的喂棉仓与精梳机2相连，通过喂棉小车1的喂棉罗拉将氧化铝短切纱喂入精梳机2。Optionally, the cotton feeding trolley 1 is equipped with a precise weighing mechanism, and the cotton feeding trolley 1 includes a cotton feeding bin (not shown in the figure) and a cotton feeding roller (not shown in the figure). The cotton feeding bin of the cotton feeding trolley 1 is connected to the combing machine 2, and the alumina chopped yarn is fed into the combing machine 2 through the cotton feeding roller of the cotton feeding trolley 1.
可选地，所述精梳机2的喇叭口与风机管道3相连，将精梳机2梳理的氧化铝短切纱输送至高棉箱4。Optionally, the bell mouth of the combing machine 2 is connected to the fan duct 3 to transport the alumina chopped yarn combed by the combing machine 2 to the high-cotton box 4.
可选地，所述压辊7设置于所述甬道装置6出口处且位于所述输送装置8上方，所述输送装置8与针刺机10的入口相连。Optionally, the pressing roller 7 is arranged at the outlet of the tunnel device 6 and located above the conveying device 8, and the conveying device 8 is connected to the inlet of the needling machine 10.
可选地，所述甬道装置6内相邻的两个针辊5的旋转方向相反，具体的，甬道装置6内水平方向上相邻的两个针辊5的旋转方向相反，竖直方向上相邻的两个针辊5的旋转方向也相反，可选地，所述针辊5的转速为200-600r/min，优选为300-400r/min。Optionally, the rotation directions of two adjacent needle rollers 5 in the channel device 6 are opposite. Specifically, the rotation directions of two adjacent needle rollers 5 in the horizontal direction in the channel device 6 are opposite, and the rotation directions of two adjacent needle rollers 5 in the vertical direction are also opposite. Optionally, the rotation speed of the needle roller 5 is 200-600r/min, preferably 300-400r/min.
可选地，所述甬道装置6内由若干个针辊5组成的针辊组有四排。Optionally, the needle roller group composed of a plurality of needle rollers 5 in the tunnel device 6 has four rows.
可选地，所述针辊5包括辊轴51、辊筒52和针刺53，所述辊筒52内穿设有辊轴51，所述辊筒52的外表面均匀设置有若干个针刺53。Optionally, the needle roller 5 includes a roller shaft 51 , a roller cylinder 52 and a needle punch 53 , the roller shaft 51 is inserted into the roller cylinder 52 , and a plurality of needle punches 53 are evenly arranged on the outer surface of the roller cylinder 52 .
可选地，所述氧化铝短切纱长度为10-90mm，优选为30-60mm；原料为国产F72、C82或M99氧化铝纤维，优选为F72和C82国产氧化铝纤维。Optionally, the length of the alumina chopped yarn is 10-90 mm, preferably 30-60 mm; the raw material is domestic F72, C82 or M99 alumina fiber, preferably F72 and C82 domestic alumina fibers.
本实施例的工作原理：氧化铝短切纱经过喂棉小车1精准称重送至精梳机2内梳理，梳理后的纱经风机管道3送至高棉箱4，再经过数组针辊5在甬道装置6内分散下落至底部网带带9成网，出口经过压辊7定型后由输送装置8传送至针刺机11针刺成形得到氧化铝短切纤维毡。The working principle of this embodiment is as follows: the alumina chopped yarn is accurately weighed by the cotton feeding trolley 1 and sent to the combing machine 2 for combing. The combed yarn is sent to the high cotton box 4 through the fan pipe 3, and then dispersed and falls to the bottom mesh belt 9 in the channel device 6 through an array of needle rollers 5 to form a mesh. After being shaped by the pressure roller 7 at the outlet, it is conveyed by the conveying device 8 to the needle punching machine 11 for needle punching to obtain the alumina chopped fiber felt.
实施例2 Example 2
如图4所示，本实施例提供了一种辅助氧化铝短切纤维毡成形方法，所述方法是采用实施例1提供的一种辅助氧化铝短切纤维毡成形气流成网装置，包括以下步骤：As shown in FIG. 4 , this embodiment provides a method for forming an auxiliary alumina chopped strand mat, wherein the method adopts an auxiliary alumina chopped strand mat forming air-laid device provided in Example 1, and comprises the following steps:
(1)氧化铝短切纱经过喂棉小车精准称重送至精梳机内梳理；(1) The alumina chopped yarn is accurately weighed by the cotton feeding trolley and sent to the combing machine for combing;
(2)梳理后的纱经风机管道送至高棉箱，(2) The combed yarn is sent to the cotton box through the fan duct.
(3)再经过数组针辊在甬道装置内分散并由负压吸风机吸取下落至底部网带成网；(3) It is then dispersed in the tunnel device through an array of needle rollers and sucked down by a negative pressure suction fan to the bottom mesh belt to form a net;
(4)经过压辊定型后由输送装置传送至针刺机针刺成形得到氧化铝短切纤维毡。(4) After being shaped by a pressure roller, it is transferred to a needle punching machine by a conveying device for needle punching to obtain alumina chopped fiber felt.
本发明所述一种辅助氧化铝短切纤维毡成形气流成网装置及方法实现了大厚重氧化铝短切纤维毡的制备，提高了氧化铝短切纤维毡制备过程中的均匀性和稳定性。The device and method for auxiliary alumina chopped fiber felt forming airflow web forming of the present invention realizes the preparation of heavy and thick alumina chopped fiber felt and improves the uniformity and stability in the preparation process of alumina chopped fiber felt.
实施例3Example 3
一种制备氧化铝短切纤维毡的工艺流程：A process for preparing alumina chopped fiber mat:
具体地，取出50kg的国产F72氧化铝纤维(线密度85Tex)以300±1g/次的投料量、±1g/次的投料精度、每隔20s投入喂棉小车。进一步地，经风机管道送至高棉箱的短切纤维长度为50mm，针辊组转速为400r/min，负压风机的频率为20Hz，网带向前运动的速度为10mm/min。进一步地，输送装置输送氧化铝短切纤维网的速度为10mm/min经压辊定型送至针刺机定型后收卷，即得实施例3的氧化铝短切纤维毡。Specifically, 50 kg of domestically produced F72 alumina fiber (linear density 85 Tex) was taken out and fed into the cotton feeding trolley at a feeding amount of 300 ± 1 g/time, a feeding accuracy of ± 1 g/time, and every 20 seconds. Furthermore, the length of the chopped fibers sent to the high cotton box through the fan duct is 50 mm, the speed of the needle roller group is 400 r/min, the frequency of the negative pressure fan is 20 Hz, and the speed of the mesh belt moving forward is 10 mm/min. Furthermore, the conveying device conveys the alumina chopped fiber web at a speed of 10 mm/min, and it is sent to the needle loom for shaping by the pressure roller and then rolled up to obtain the alumina chopped fiber felt of Example 3.
对照例1Comparative Example 1
一种制备氧化铝短切纤维毡的工艺流程：A process for preparing alumina chopped fiber mat:
具体地，取出50kg的国产F72氧化铝纤维(线密度85Tex)以300±1g/次的投料量、±1g/次的投料精度、每隔20s投入喂棉小车。进一步地，经风机管道送至高棉箱的短切纤维长度为80mm，针辊组转速为400r/min，负压风机的频率为20Hz，网带向前运动的速度为10mm/min。进一步地，输送装置输送氧化铝短切纤维网的速度为10mm/min经压辊定型送至针刺定型后收卷，即得对照例1的氧化铝短切纤维毡。Specifically, 50 kg of domestically produced F72 alumina fiber (linear density 85Tex) was taken out and fed into the cotton feeding cart at a feeding amount of 300 ± 1 g/time, a feeding accuracy of ± 1 g/time, and every 20 seconds. Furthermore, the length of the chopped fibers sent to the high cotton box through the fan duct was 80 mm, the speed of the needle roller group was 400 r/min, the frequency of the negative pressure fan was 20 Hz, and the speed of the mesh belt moving forward was 10 mm/min. Furthermore, the conveying device conveyed the alumina chopped fiber web at a speed of 10 mm/min, and it was sent to the needle punching setting after being shaped by the pressure roller, and then rolled up, so as to obtain the alumina chopped fiber felt of Control Example 1.
对照例2Comparative Example 2
一种制备氧化铝短切纤维毡的工艺流程：A process for preparing alumina chopped fiber mat:
具体地，取出50kg的国产F72氧化铝纤维(线密度85Tex)以200±1g/次的投料量、±1g/次的投料精度、每隔25s投入喂棉小车。进一步地，经风机管道送至高棉箱的短切纤维长度为50mm，针辊组转速为200r/min，负压风机的频率为20Hz，网带向前运动的速度为10mm/min。进一步地，输送装置输送氧化铝短切纤维网的速度为10mm/min经压辊定型送至针刺定型后收卷，即得对照例2的氧化铝短切纤维毡。Specifically, 50 kg of domestically produced F72 alumina fiber (linear density 85Tex) was taken out and fed into the cotton feeding trolley at a feeding amount of 200 ± 1 g/time, a feeding accuracy of ± 1 g/time, and every 25 seconds. Furthermore, the length of the chopped fibers sent to the high cotton box through the fan duct is 50 mm, the speed of the needle roller group is 200 r/min, the frequency of the negative pressure fan is 20 Hz, and the speed of the mesh belt moving forward is 10 mm/min. Furthermore, the conveying device conveys the alumina chopped fiber web at a speed of 10 mm/min, and after being shaped by the pressure roller, it is sent to the needle punching shaping and then rolled up, and the alumina chopped fiber felt of Control Example 2 is obtained.
对照例3 Comparative Example 3
一种制备氧化铝短切纤维毡的工艺流程：A process for preparing alumina chopped fiber mat:
具体地，取出50kg的国产F72氧化铝纤维(线密度85Tex)以200±1g/次的投料量、±1g/次的投料精度、每隔20s投入喂棉小车。进一步地，经风机管道送至高棉箱的短切纤维长度为80mm，针辊组转速为200r/min，负压风机的频率为20Hz，网带向前运动的速度为10mm/min。进一步地，输送装置输送氧化铝短切纤维网的速度为10mm/min经压辊定型送至针刺定型后收卷，即得对照例3的氧化铝短切纤维毡。Specifically, 50 kg of domestically produced F72 alumina fiber (linear density 85Tex) was taken out and fed into the cotton feeding trolley at a feeding amount of 200±1g/time, a feeding accuracy of ±1g/time, and every 20s. Furthermore, the length of the chopped fibers sent to the high cotton box through the fan duct was 80 mm, the speed of the needle roller group was 200r/min, the frequency of the negative pressure fan was 20Hz, and the speed of the mesh belt moving forward was 10mm/min. Furthermore, the conveying device conveyed the alumina chopped fiber web at a speed of 10mm/min, and it was sent to the needle punching setting after being shaped by the pressure roller and then rolled up, so as to obtain the alumina chopped fiber felt of Control Example 3.
实施例4Example 4
一种制备氧化铝短切纤维毡的工艺流程：A process for preparing alumina chopped fiber mat:
具体地，取出30kg的国产C82氧化铝纤维(线密度120Tex)以100±1g/次的投料量、±1g/次的投料精度、每隔30s投入喂棉小车。进一步地，经风机管道送至高棉箱的短切纤维长度为30mm，针辊组转速为600r/min，负压风机的频率为20Hz，网带向前运动的速度为20mm/min。进一步地，输送装置输送氧化铝短切纤维网的速度为20mm/min经压辊定型送至针刺定型后收卷，即得实施例4的氧化铝短切纤维毡。Specifically, 30 kg of domestic C82 alumina fiber (linear density 120Tex) was taken out and fed into the cotton feeding trolley at a feeding amount of 100±1g/time, a feeding accuracy of ±1g/time, and every 30 seconds. Furthermore, the length of the chopped fibers sent to the high cotton box through the fan duct is 30 mm, the speed of the needle roller group is 600r/min, the frequency of the negative pressure fan is 20Hz, and the speed of the mesh belt moving forward is 20mm/min. Furthermore, the conveying device conveys the alumina chopped fiber web at a speed of 20mm/min, and after being shaped by the pressure roller, it is sent to the needle punching shaping and then rolled up, so as to obtain the alumina chopped fiber felt of Example 4.
对照例4Comparative Example 4
一种制备氧化铝短切纤维毡的工艺流程：A process for preparing alumina chopped fiber mat:
具体地，取出30kg的国产C82氧化铝纤维(线密度120Tex)以100±1g/次的投料量、±1g/次的投料精度、每隔30s投入喂棉小车。进一步地，经风机管道送至高棉箱的短切纤维长度为60mm，针辊组转速为400r/min，负压风机的频率为20Hz，网带向前运动的速度为10mm/min。进一步地，输送装置输送氧化铝短切纤维网的速度为10mm/min经压辊定型送至针刺定型后收卷，即得对照例4的氧化铝短切纤维毡。Specifically, 30 kg of domestic C82 alumina fiber (linear density 120Tex) was taken out and fed into the cotton feeding cart at a feeding amount of 100±1g/time, a feeding accuracy of ±1g/time, and every 30 seconds. Furthermore, the length of the chopped fibers sent to the high cotton box through the fan duct is 60 mm, the speed of the needle roller group is 400r/min, the frequency of the negative pressure fan is 20Hz, and the speed of the mesh belt moving forward is 10mm/min. Furthermore, the conveying device conveys the alumina chopped fiber web at a speed of 10mm/min, and it is sent to the needle punching setting after being shaped by the pressure roller, and then rolled up, so as to obtain the alumina chopped fiber felt of Control Example 4.
对照例5Comparative Example 5
一种制备氧化铝短切纤维毡的工艺流程：A process for preparing alumina chopped fiber mat:
具体地，取出30kg的国产C82氧化铝纤维(线密度120Tex)以200±1g/次的投料量、±1g/次的投料精度、每隔20s投入喂棉小车。进一步地，经风机管道送至高棉箱的短切纤维长度为60mm，针辊组转速为400r/min，负压风机的频率为20Hz，网带向前运动的速度为10mm/min。进一步地，输送装置输送氧化铝短切纤维网的速度为10mm/min经压辊定型送至针刺定型后收卷，即得对照例5的氧化铝短切纤维毡。Specifically, 30 kg of domestic C82 alumina fiber (linear density 120Tex) was taken out and fed into the cotton feeding cart at a feeding amount of 200±1g/time, a feeding accuracy of ±1g/time, and every 20s. Furthermore, the length of the chopped fibers sent to the high cotton box through the fan duct was 60mm, the speed of the needle roller group was 400r/min, the frequency of the negative pressure fan was 20Hz, and the speed of the mesh belt moving forward was 10mm/min. Furthermore, the conveying device conveyed the alumina chopped fiber web at a speed of 10mm/min, and it was sent to the needle punching setting after being shaped by the pressure roller, and then rolled up, so as to obtain the alumina chopped fiber felt of Control Example 5.
将实施例3-4和对照例1-5得到的氧化铝短切纤维毡，在网毡头尾段50cm处、中间25cm处各取5个样，分成试验组1-5，参照中华人民共和国国家标准GB/T 9914.3-2013/ISO 3374：2000《增强制品试验方法第3部分：单位面积质量的测定》，在相同条件下进行面密度测试并 用厚度仪对其厚度进行测试，测试结果如下表1所示：Five samples of the alumina chopped fiber mats obtained in Examples 3-4 and Comparative Examples 1-5 were taken at 50 cm from the head and tail section and 25 cm from the middle section, respectively, and divided into test groups 1-5. The surface density was tested under the same conditions according to the National Standard of the People's Republic of China GB/T 9914.3-2013/ISO 3374:2000 "Test methods for reinforced products - Part 3: Determination of mass per unit area". The thickness was tested with a thickness gauge, and the test results are shown in Table 1 below:
表1实施例3-4和对照例1-5的测试结果
Table 1 Test results of Examples 3-4 and Comparative Examples 1-5
从表1可知，采用本发明一种辅助氧化铝短切纤维毡成形气流成网装置及方法可以通过原料选择、工艺参数调整制备不同面密度、厚度的氧化铝短切纤维毡，该发明所制备氧化铝短切纤维毡的面密度和厚度突破传统方法制备的800g/m2和12mm实现大厚重氧化铝短切纤维毡的制备，且面密度波动值(CV值)远低于现有工艺的面密度波动值，表明本发明所提供的制备方法提高了网毡的均匀性和稳定性。As can be seen from Table 1, the device and method for auxiliary alumina chopped fiber felt forming airflow web forming of the present invention can prepare alumina chopped fiber felts of different surface densities and thicknesses by selecting raw materials and adjusting process parameters. The surface density and thickness of the alumina chopped fiber felt prepared by the present invention exceed 800g/ m2 and 12mm prepared by the traditional method, and the preparation of large and heavy alumina chopped fiber felt is achieved. The surface density fluctuation value (CV value) is much lower than that of the existing process, indicating that the preparation method provided by the present invention improves the uniformity and stability of the web felt.
虽然本发明已以较佳实施例公开如上，但其并非用以限定本发明，任何熟悉此技术的人，在不脱离本发明的精神和范围内，都可做各种的改动与修饰，因此本发明的保护范围应该以权利要求书所界定的为准。 Although the present invention has been disclosed as above in the form of a preferred embodiment, it is not intended to limit the present invention. Anyone familiar with this technology can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be based on the definition of the claims.

Claims (10)

  1. 一种辅助氧化铝短切纤维毡成形气流成网装置，其特征在于，包括喂棉小车(1)，所述喂棉小车(1)连接有精梳机(2)，所述精梳机(2)通过风机管道(3)连接有高棉箱(4)，所述高棉箱(4)的下方设置有甬道装置(6)，所述甬道装置(6)内设置有由若干个针辊(5)组成的多排针辊组，所述甬道装置(6)的下方设置有负压吸风机(9)，所述负压吸风机(9)与甬道装置(6)之间设置有输送装置(8)，所述甬道装置(6)的出口处设置有压辊(7)，所述输送装置(8)的一侧设置针刺机(10)。An auxiliary alumina chopped fiber felt forming airflow web forming device, characterized in that it comprises a cotton feeding trolley (1), the cotton feeding trolley (1) is connected to a combing machine (2), the combing machine (2) is connected to a cotton box (4) through a fan duct (3), a channel device (6) is arranged below the cotton box (4), a multi-row needle roller group composed of a plurality of needle rollers (5) is arranged in the channel device (6), a negative pressure suction fan (9) is arranged below the channel device (6), a conveying device (8) is arranged between the negative pressure suction fan (9) and the channel device (6), a pressure roller (7) is arranged at the outlet of the channel device (6), and a needle punching machine (10) is arranged on one side of the conveying device (8).
  2. 根据权利要求1所述的辅助氧化铝短切纤维毡成形气流成网装置，其特征在于，所述输送装置(8)为带传动，所述带传动包括传送带，所述传送带为网带，其上开设有若干个网孔。The auxiliary alumina chopped fiber felt forming air-laid device according to claim 1 is characterized in that the conveying device (8) is a belt drive, the belt drive includes a conveyor belt, and the conveyor belt is a mesh belt with a plurality of mesh holes formed thereon.
  3. 根据权利要求2所述的辅助氧化铝短切纤维毡成形气流成网装置，其特征在于，所述喂棉小车(1)配有精准称重机构，喂棉小车(1)包括喂棉仓和喂棉罗拉，喂棉小车(1)的喂棉仓与精梳机(2)相连，通过喂棉小车(1)的喂棉罗拉将氧化铝短切纱喂入精梳机(2)。The auxiliary alumina chopped fiber felt forming air-laid device according to claim 2 is characterized in that the cotton feeding trolley (1) is equipped with a precise weighing mechanism, the cotton feeding trolley (1) comprises a cotton feeding bin and a cotton feeding roller, the cotton feeding bin of the cotton feeding trolley (1) is connected to the combing machine (2), and the alumina chopped yarn is fed into the combing machine (2) through the cotton feeding roller of the cotton feeding trolley (1).
  4. 根据权利要求3所述的辅助氧化铝短切纤维毡成形气流成网装置，其特征在于，所述精梳机(2)的喇叭口与风机管道(3)相连，将精梳机(2)梳理的氧化铝短切纱输送至高棉箱(4)；所述压辊(7)设置于所述甬道装置(6)出口处且位于所述输送装置(8)上方，所述输送装置(8)与针刺机(10)的入口相连。The auxiliary alumina chopped fiber felt forming air-laid device according to claim 3 is characterized in that the bell mouth of the combing machine (2) is connected to the fan duct (3), and the alumina chopped yarn combed by the combing machine (2) is transported to the high cotton box (4); the pressure roller (7) is arranged at the outlet of the corridor device (6) and is located above the conveying device (8), and the conveying device (8) is connected to the inlet of the needle machine (10).
  5. 根据权利要求4所述的辅助氧化铝短切纤维毡成形气流成网装置，其特征在于，所述甬道装置(6)内相邻的两个针辊(5)的旋转方向相反。The auxiliary alumina chopped fiber felt forming air-laid device according to claim 4 is characterized in that the rotation directions of the two adjacent needle rollers (5) in the channel device (6) are opposite.
  6. 根据权利要求5所述的辅助氧化铝短切纤维毡成形气流成网装置，其特征在于，所述针辊(5)包括辊轴(51)、辊筒(52)和针刺(53)，所述辊筒(52)内穿设有辊轴(51)，所述辊筒(52)的外表面均匀设置有若干个针刺(53)。The auxiliary alumina chopped fiber felt forming air-laid device according to claim 5 is characterized in that the needle roller (5) includes a roller shaft (51), a roller (52) and a needle punch (53), the roller shaft (51) is inserted into the roller (52), and a plurality of needle punches (53) are evenly arranged on the outer surface of the roller (52).
  7. 一种辅助氧化铝短切纤维毡成形的方法，其特征在于，所述方法是采用权利要求6所述的辅助氧化铝短切纤维毡成形气流成网装置，包括以下步骤：A method for assisting the formation of alumina chopped strands of fibers, characterized in that the method adopts the air-laid device for assisting the formation of alumina chopped strands of fibers as claimed in claim 6, comprising the following steps:
    (1)氧化铝短切纱经过喂棉小车(1)精准称重送至精梳机(2)内梳理；(1) Alumina chopped yarn is accurately weighed by a cotton feeding trolley (1) and sent to a combing machine (2) for combing;
    (2)梳理后的纱经风机管道(3)送至高棉箱(4)；(2) The combed yarn is sent to the cotton box (4) through the fan duct (3);
    (3)再经过数组针辊(5)在甬道装置(6)内分散并由负压吸风机(9)吸取下落至底部网带成网；(3) The particles are dispersed in the tunnel device (6) through an array of needle rollers (5) and sucked by a negative pressure suction fan (9) to fall to the bottom mesh belt to form a mesh;
    (4)经过压辊(7)定型后由输送装置(8)传送至针刺机(10)针刺成形得到氧化铝短切纤维毡。(4) After being shaped by a pressing roller (7), the fiber is transferred by a conveying device (8) to a needle punching machine (10) for needle punching to obtain an alumina chopped fiber felt.
  8. 根据权利要求7所述的辅助氧化铝短切纤维毡成形的方法，其特征在于，步骤(3)所 述的针辊(5)的转速为200-600r/min；步骤(4)所述的输送装置(8)输送氧化铝短切纤维网的速度为10mm/min。The method for auxiliary forming of alumina chopped strand mat according to claim 7, characterized in that step (3) The rotation speed of the needle roller (5) is 200-600 r/min; the speed of the conveying device (8) in step (4) conveying the alumina chopped fiber web is 10 mm/min.
  9. 根据权利要求7所述的辅助氧化铝短切纤维毡成形的方法，其特征在于，步骤(3)所述的负压吸风机(9)的频率为5-20Hz，步骤(1)所述的氧化铝短切纱长度为10-90mm。The method for assisting the formation of alumina chopped fiber felt according to claim 7 is characterized in that the frequency of the negative pressure suction fan (9) described in step (3) is 5-20 Hz, and the length of the alumina chopped yarns described in step (1) is 10-90 mm.
  10. 根据权利要求7所述的辅助氧化铝短切纤维毡成形的方法，其特征在于，步骤(4)所述的氧化铝短切纤维毡的厚度为8-23mm，面密度为800-1800g/m2，面密度波动值为1％-3％。 The method for auxiliary forming of alumina chopped strand mat according to claim 7 is characterized in that the alumina chopped strand mat in step (4) has a thickness of 8-23 mm, a surface density of 800-1800 g/m 2 , and a surface density fluctuation value of 1%-3%.
PCT/CN2023/138171 2022-12-13 2023-12-12 Auxiliary air-laying device for forming alumina chopped fiber felt, and method WO2024125511A1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN202211603836.1A CN115748105A (en) 2022-12-13 2022-12-13 Auxiliary alumina chopped strand mat forming air-laid device and method
CN202223358569.4U CN219099497U (en) 2022-12-13 2022-12-13 Auxiliary alumina chopped fiber mat forming air-laid device
CN202223358569.4 2022-12-13
CN202211603836.1 2022-12-13

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WO2024125511A1 true WO2024125511A1 (en) 2024-06-20

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