A non-woven fabric production process

Abstract

This application relates to the field of non-woven fabric production technology, and discloses a non-woven fabric production process, which includes the following steps: S1. Raw material opening: The raw material fibers are opened, and impurities and foreign fibers in the raw material fibers are removed; S2. Carding and web laying: The opened raw material fibers are carded and mixed by a carding machine, and the web is processed into a predetermined thickness and width according to process requirements and then output; S3. Web pre-wetting: The carded web is conveyed to a pre-wetting device, and the pre-wetting device adds water to pre-wet the web, and a temperature control mechanism is used to heat and keep the pre-wetting water warm; S4. Hydroentangling and shaping: The pre-wetted web is conveyed to a hydroentangling machine, and the web is hydroentangled and shaped by the hydroentangling machine; S5. Drying: A drying device is used to dry the hydroentangled web; S6. Rewinding: A rewinding device is used to rewind the dried web onto a rewinding roller. This application has the effects of reducing the air content in the web before hydroentangling and improving the web braiding effect in the web.

Description

Technical Field

[0001] The present application relates to the field of non-woven fabric production technology, and in particular, to a non-woven fabric production process. Background Art

[0002] Non-woven fabric, also known as non-woven cloth, is composed of oriented or random fibers. It is called cloth because of its cloth appearance and certain properties. Non-woven fabric has the characteristics of moisture-proof, breathable, flexible, light in weight, non-flammable, easy to decompose, non-toxic and non-irritating, rich in colors, low in price, recyclable, etc.

[0003] Currently, a Chinese utility model patent with the publication number CN205775158U discloses a spunlace non-woven fabric production line, including a weighing machine, a carding machine, a drafting and forming machine, a high-pressure spunlace machine, a dryer, an on-line monitor, a winding machine, and a cutting machine; the weighing machine is connected to the carding machine through air duct transportation, the carding machine is connected to the drafting and forming machine through a conveying roller, the drafting and forming machine is connected to the high-pressure spunlace machine through a conveyor belt, the high-pressure spunlace machine is connected to the dryer through a conveyor belt, the dryer is connected to the on-line monitor through a conveyor belt, the on-line monitor reaches the winding machine through a reel, and the winding machine is connected to the cutting machine through a conveyor belt, and finally the non-woven fabric is cut into different widths according to requirements.

[0004] In view of the above related technologies, the inventor found that when producing a multi-layer stacked fiber web, due to the relatively thick thickness of the multi-layer stacked fiber web, there is more air in the fiber web, and during the process of water-jetting the fiber web, it is easy to cause the energy dispersion of the water needles, affecting the entanglement effect between the fibers, and then there is a defect of relatively low production quality of the non-woven fabric. Summary of the Invention

[0005] In order to alleviate the problem of relatively low production quality of non-woven fabric, the present application provides a non-woven fabric production process.

[0006] A non-woven fabric production process provided by the present application adopts the following technical scheme:

[0007] A non-woven fabric production process includes the following steps:

[0008] S1. Raw material opening: The raw material fibers are opened, and the impurities and foreign fibers in the raw material fibers are removed;

[0009] S2. Carding and web laying: The opened raw material fibers are carded and mixed by a carding machine, and the fiber web is processed into a predetermined thickness and width according to the process requirements and then output;

[0010] S3. Fiber web pre-wetting: The carded fiber web is conveyed to a pre-wetting device, and the pre-wetting device adds water to pre-wet the fiber web, and uses a temperature control mechanism to heat and keep warm the pre-wetting water;

[0011] S4. Hydroentangling and setting: The pre-wetted fiber web is transported to a hydroentangling machine, and the fiber web is hydroentangled and set by the hydroentangling machine;

[0012] S5. Drying: Use a drying device to dry the hydroentangled fiber web;

[0013] S6. Rewinding: Use a rewinding device to rewind the dried fiber web onto a rewinding roller.

[0014] By adopting the above technical solution, before the fiber web is hydroentangled and set, the fiber web first passes through a pre-wetting device, and the pre-wetting device is used to add water to pre-wet the fiber web. The injected water is used to reduce the air content in the fiber web and improve the knitting effect of the fibers in the fiber web; and the temperature control mechanism is used to heat the pre-wetting water to a warm water state. The warm water can make the fibers in the fiber web softer and further improve the knitting effect of the fibers.

[0015] Preferably, in step S3, the pre-wetting device includes a water storage tank filled with pre-wetting water, a pre-wetting roller, and an extrusion mechanism. The pre-wetting roller is rotatably connected in the water storage tank, the bottom of the pre-wetting roller is submerged in the pre-wetting water in the water storage tank, and the extrusion mechanism is arranged above the water storage tank. The extrusion mechanism is used to extrude water from the pre-wetted fiber web.

[0016] By adopting the above technical solution, a pre-wetting roller is arranged in the water storage tank. After the fiber web bypasses the pre-wetting roller and then enters the hydroentangling machine, the fiber web can be pre-wetted with water to reduce the air content in the fiber web. Then the fiber web passes through the extrusion mechanism, and the extrusion mechanism is used to extrude the fiber web. While further reducing the air content in the fiber web, a large amount of pre-wetting water is extruded, so that the fiber web can better absorb the energy in the water needles and improve the knitting effect of the fibers in the fiber web; since the extrusion mechanism is arranged above the water storage tank, the extruded pre-wetting water can flow back into the water storage tank again, and the pre-wetting water can be reused.

[0017] Preferably, in step S5, the drying device includes a drying box and a water removal mechanism. The water removal mechanism includes a second bracket, a first water pressing roller, a second water pressing roller, two connecting blocks, and two springs. The second bracket is fixedly connected to the drying box, the first water pressing roller is rotatably connected to the second bracket, both of the two connecting blocks are slidably connected to the second bracket, the second water pressing roller is rotatably connected between the two connecting blocks, and the two springs are arranged corresponding to the two connecting blocks. The springs are arranged between their corresponding connecting blocks and the second bracket to push the second water pressing roller to move towards the first water pressing roller.

[0018] By adopting the above technical solution, the connecting block is slidably connected to the second bracket, and the spring is used to push the connecting block to move, so that the first water pressing roller is pressed towards the second water pressing roller, and then the second water pressing roller can press the fiber web between the first water pressing roller and the second water pressing roller, facilitating the extrusion of more moisture in the fiber web. At the same time, the sliding connection of the connecting block enables the first water pressing roller and the second water pressing roller to extrude fiber webs of different thicknesses, improving the applicability of the water removal mechanism.

[0019] Preferably, a water collecting tank for collecting the water extruded between the first water pressing roller and the second water pressing roller is fixedly connected to the second bracket. A return pipe is communicated with the water collecting tank, and one end of the return pipe far away from the water collecting tank is communicated with the water storage tank.

[0020] By adopting the above technical solution, a water collecting tank is arranged below the first water pressing roller and the second water pressing roller. The water collecting tank is used to collect the water extruded by the first water pressing roller and the second water pressing roller, and then it flows back to the water storage tank, forming a supplement to the pre-wetted water in the water storage tank, and at the same time reducing the possibility of wasting water resources.

[0021] Preferably, a plurality of support rollers for supporting the fiber web are rotatably connected in the drying box. A drying mechanism is arranged on the drying box. The drying mechanism includes a hot air blower and a plurality of air pipes. The plurality of air pipes are all connected in the drying box. The plurality of air pipes are arranged at intervals along the conveying direction of the fiber web. A plurality of air vent holes are opened on each air pipe. The plurality of air vent holes are arranged at intervals along the length direction of the air pipe. The hot air blower is arranged on one side of the drying box, and the plurality of air pipes are all communicated with the air outlet of the hot air blower.

[0022] By adopting the above technical solution, air vent holes are opened on each air pipe. The hot air blower is used to supply air to the plurality of air pipes, and the hot air is sprayed out through the plurality of air vent holes, and then the fiber web is dried to realize the drying process of the fiber web.

[0023] Preferably, a plurality of leveling mechanisms for preventing the fiber web from warping are arranged in the drying box. One set of leveling mechanism is arranged between every two adjacent support rollers. Each set of leveling mechanism includes two clamping plates. A clamping groove for clamping the edge of the fiber web is opened on each clamping plate. The two clamping plates are respectively located on both sides of the fiber web to clamp the two edges of the fiber web, and the two clamping plates are both connected in the drying box.

[0024] By adopting the above technical solution, clamping grooves are opened on the clamping plates, and the edges of the fiber web are clamped by the clamping grooves opened on the clamping plates, thereby reducing the possibility of the fiber web warping easily during the drying process and improving the production quality of the fiber web.

[0025] Preferably, each of the clamping plates is provided with a hollow interior. On opposite side walls of each clamping groove, a plurality of elastic rubber blocks are fixedly connected. The plurality of elastic rubber blocks on the same side wall of the clamping groove are spaced along the length direction of the clamping plate. Ventilation holes are formed in the side wall of the clamping groove between adjacent two elastic rubber blocks. The plurality of ventilation holes are all communicated with the interior of the clamping plate, and the interior of each clamping plate is communicated with the air outlet of the hot air blower.

[0026] By adopting the above technical solution, a plurality of elastic rubber blocks are fixedly connected to opposite side walls of the clamping groove, and ventilation holes are formed between adjacent two elastic rubber blocks. The edge of the fiber web is clamped by the plurality of elastic rubber blocks, and hot air is ejected from the ventilation holes to dry the edge of the fiber web, reducing the possibility of affecting the drying effect of the edge of the fiber web due to the clamping of the clamping plate.

[0027] Preferably, two sets of support components are arranged on each ventilation pipe. The two sets of support components are arranged corresponding to the two clamping plates respectively. The support components arranged on the same ventilation pipe are respectively located at positions close to both ends of the ventilation pipe. Each set of support components includes a fixed ring, a corrugated pipe and a sliding ring. The fixed ring is fixedly connected to one end of the ventilation pipe. The sliding ring is slidably connected to the ventilation pipe. The corrugated pipe is sleeved on the ventilation pipe. The corrugated pipe is fixedly connected between the fixed ring and the sliding ring. A communicating pipe is communicated with the clamping plate. The communicating pipe is communicated with the corrugated pipe. The clamping plate is fixedly connected to the sliding ring connected to the corrugated pipe connected thereto. A driving component is arranged on one side of each ventilation pipe. The two sliding rings arranged on the same ventilation pipe are both connected to the driving component, and the driving component moves the two sliding rings.

[0028] By adopting the above technical solution, a corrugated pipe is sleeved on the ventilation pipe, so that the hot air ejected from some ventilation holes enters the corrugated pipe, and then enters the interior of the clamping plate through the communicating pipe to blow and dry the edge of the fiber web; by using the driving component to drive the two sliding rings to move, the clamping plates on both sides of the fiber web can be moved, so that the clamping plates can clamp fiber webs of different widths. When drying a narrower fiber web, the corrugated pipe can cover more ventilation holes, thereby increasing the amount of hot air ejected from the ventilation holes and improving the drying effect of the edge of the fiber web.

[0029] Preferably, the temperature control mechanism includes an exhaust pipe and a spray pipe. One end of the exhaust pipe is communicated with the interior of the drying box. The end of the exhaust pipe far from the drying box is inserted into the water storage tank. The spray pipe is communicated with the exhaust pipe. The end of the spray pipe far from the exhaust pipe is inserted into the pre-wetted water in the water storage tank. The spray pipe is arranged obliquely.

[0030] By adopting the above technical solution, the drying box is connected to the water storage tank through an exhaust pipe, so that the hot air after drying the fiber web passes through the exhaust pipe and the spray pipe into the pre-wetting water in the water storage tank, and the hot air is used to heat the pre-wetting water to make the pre-wetting water in a warm water state. The warm water can make the fiber rods in the fiber web softer, thereby improving the braiding effect of the fibers; the inclined setting of the spray pipe enables the introduced hot air to push the pre-wetting water to flow, thereby increasing the heating rate of the pre-wetting water.

[0031] Preferably, a temperature sensor is arranged in the water storage tank, an air outlet pipe is connected to the exhaust pipe, a first electric control valve is arranged on the air outlet pipe, a second electric control valve is arranged on the exhaust pipe, the second electric control valve is located between the spray pipe and the air outlet pipe, and both the first electric control valve and the second electric control valve are electrically connected to the temperature sensor.

[0032] By adopting the above technical solution, a temperature sensor is arranged in the water storage tank, the temperature in the water storage tank is detected by the temperature sensor, and the first electric control valve and the second electric control valve are controlled. When the temperature of the pre-wetting water is low, the first electric control valve is closed and the second electric control valve is opened, so that the hot air can be introduced into the pre-wetting water to heat the pre-wetting water; when the pre-wetting water reaches a suitable temperature, the first electric control valve is opened and the second electric control valve is closed, so that the hot air is discharged from the air outlet pipe to avoid continuously heating the pre-wetting water, realizing the control of the temperature of the pre-wetting water.

[0033] In summary, the present application at least includes the following beneficial technical effects:

[0034] 1. Before hydroentangling the fiber web, the fiber web is pre-wetted with water, and then the air inside the fiber web is discharged, improving the braiding effect of the fibers in the fiber web;

[0035] 2. By arranging clamping plates on both sides of the fiber web and using the clamping grooves formed on the clamping plates to clamp the edges of the fiber web, the possibility that the edges of the fiber web are easily warped during drying is reduced, improving the production quality of the fiber web;

[0036] 3. By connecting the drying box to the water storage tank through an exhaust pipe, the hot air for drying the fiber web can pass through the exhaust pipe and the spray pipe into the pre-wetting water in the water storage tank, and the hot air is used to heat and raise the temperature of the pre-wetting water in the water storage tank to make the pre-wetting water in a warm water state. The warm water can make the fibers in the fiber web softer, improving the braiding effect of the fibers. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 is the overall structural schematic diagram of the embodiment of the present application;

[0038] Figure 2 is the structural schematic diagram of the pre-wetting device in the embodiment of the present application;

[0039] Figure 3 It is a schematic structural diagram of the water removal mechanism in the embodiment of the present application;

[0040] Figure 4 It is a schematic structural diagram of the second water pressing roller in the embodiment of the present application;

[0041] Figure 5 It is a schematic structural diagram of the leveling mechanism in the embodiment of the present application;

[0042] Figure 6 It is a schematic structural diagram of the driving component in the embodiment of the present application;

[0043] Figure 7 It is a schematic cross-sectional structural diagram of the supporting component in the embodiment of the present application;

[0044] Figure 8 It is a schematic structural diagram of the clamping plate in the embodiment of the present application.

[0045] Reference numerals: 100, pre-wetting device; 110, water storage tank; 120, pre-wetting roller; 130, extrusion mechanism; 140, first bracket; 150, extrusion roller; 160, first rotating component; 161, first motor; 162, first gear; 200, drying device; 300, drying box; 310, supporting roller; 320, drying mechanism; 330, hot air blower; 331, air outlet pipe; 340, ventilation pipe; 341, ventilation hole; 400, water removal mechanism; 410, second bracket; 420, first water pressing roller; 430, second water pressing roller; 440, bearing bracket; 450, connecting rod; 460, connecting block; 470, spring; 480, second rotating component; 481, second motor; 482, second gear; 490, water collecting tank; 491, return pipe; 500, leveling mechanism; 510, supporting component; 511, fixed ring; 512, sliding ring; 513, corrugated pipe; 520, clamping plate; 521, clamping groove; 522, elastic rubber block; 523, ventilation hole; 524, communicating pipe; 525, support rod; 530, driving component; 531, bidirectional lead screw; 532, slider; 533, hand wheel; 600, temperature control mechanism; 610, exhaust pipe; 620, air spraying pipe; 630, temperature sensor; 640, air outlet pipe; 650, first electric control valve; 660, second electric control valve; 700, hydroentangling machine. Detailed implementation manners

[0046] The following further elaborates on the present application in conjunction with the attached Figure 1-8 drawings.

[0047] The embodiment of the present application discloses a non-woven fabric production process.

[0048] Referring to Figure 1 , a non-woven fabric production process includes the following steps:

[0049] S1. Raw material opening: Open the raw material fibers and remove impurities and foreign fibers in the raw material fibers;

[0050] S2. Carding and web laying: Card and mix the opened raw material fibers through a carding machine, and output the fiber web after evenly folding it into a certain thickness and width according to process requirements;

[0051] S3. Fiber web pre-wetting: Convey the carded fiber web to the pre-wetting device 100. The pre-wetting device 100 adds water to pre-wet the fiber web, and uses the temperature control mechanism 600 to heat and keep warm the pre-wetting water;

[0052] S4. Hydroentangling and shaping: Convey the pre-wetted fiber web to the hydroentangling machine 700, and hydroentangle and shape the fiber web through the hydroentangling machine 700;

[0053] S5. Drying: Use the drying device 200 to dry the hydroentangled and shaped fiber web;

[0054] S6. Rewinding: Use the rewinding device to wind the dried fiber web onto the rewinding roller.

[0055] Refer to Figure 1 and Figure 2 In step S4, the pre-wetting device 100 includes a water storage tank 110. The water storage tank 110 is fixedly connected to the ground. The water storage tank 110 has an upward opening. A pre-wetting roller 120 is rotatably connected inside the water storage tank 110. The rotation axis of the pre-wetting roller 120 is horizontally arranged, and the rotation axis of the pre-wetting roller 120 is perpendicular to the conveying direction of the fiber web. The pre-wetting water in the water storage tank 110 can submerge the bottom of the pre-wetting roller 120.

[0056] An extrusion mechanism 130 is installed on the water storage tank 110. The extrusion mechanism 130 includes a first bracket 140 fixedly connected to the water storage tank 110. The first bracket 140 is vertically arranged. Two extrusion rollers 150 are rotatably connected to the first bracket 140. Both of the two extrusion rollers 150 are located above the water storage tank 110. The rotation axes of the two extrusion rollers 150 are both parallel to the rotation axis of the pre-wetting roller 120. The extrusion rollers 150 are elastic rubber rollers. The fiber web passes through the gap between the two extrusion rollers 150. By submerging the bottom of the pre-wetting roller 120 with the pre-wetting water in the water storage tank 110, the fiber web first passes through the water storage tank 110 for water pre-wetting before entering the hydroentangling machine 700, thereby reducing the air content in the fiber web and improving the braiding effect between fibers; then, use the two extrusion rollers 150 to extrude the water-passed fiber web, further extruding a large amount of air in the fiber web while extruding a large amount of pre-wetting water, so that the fiber web can better absorb the energy in the water needles and improve the braiding effect of the fibers in the fiber web; at the same time, the two extrusion rollers 150 are arranged above the water storage tank 110, so that the extruded pre-wetting water can fall back into the water storage tank 110 again, thereby realizing the secondary utilization of the pre-wetting water and reducing the consumption of the pre-wetting water.

[0057] Referring to Figure 2 , a first rotating assembly 160 is installed on the first support 140. The first rotating assembly 160 includes a first motor 161 and two first gears 162. The first motor 161 is fixedly connected to the first support 140. The first motor 161 is coaxially and fixedly connected to one of the pressing rollers 150. The two first gears 162 are arranged in one-to-one correspondence with the two pressing rollers 150. The first gear 162 is coaxially and fixedly connected to its corresponding pressing roller 150. The two first gears 162 are meshed and connected. The first motor 161 is used to drive one of the pressing rollers 150 to rotate, and the two pressing rollers 150 are actively rotated through the cooperation of the two first gears 162, so that the fiber web is convenient to enter between the two pressing rollers 150 and the fiber web is pressed.

[0058] Referring to Figure 1 and Figure 3 , the drying device 200 in step S5 includes a drying box 300. A water removing mechanism 400 is arranged on one side of the drying box 300 close to the hydroentangling machine 700. The water removing mechanism 400 includes a second support 410. The second support 410 is fixedly connected to the side wall of the drying box 300. A first water pressing roller 420 is rotatably connected to the second support 410. The rotation axis of the first water pressing roller 420 is parallel to the rotation axis of the pressing roller 150. The fiber web is located above the first water pressing roller 420.

[0059] Two bearing brackets 440 are fixedly connected to the second support 410. The two bearing brackets 440 are respectively located at positions close to both sides of the second support 410. A connecting rod 450 is penetrated through each bearing bracket 440. The connecting rod 450 is arranged vertically. The connecting rod 450 is slidably connected to the bearing bracket 440 through which it is penetrated. A connecting block 460 is fixedly connected to the lower end of the connecting rod 450. A second water pressing roller 430 is rotatably connected between the two connecting blocks 460. The second water pressing roller 430 is located above the first water pressing roller 420. The rotation axis of the second water pressing roller 430 is parallel to the rotation axis of the first water pressing roller 420. A spring 470 is sleeved on each connecting rod 450. One end of the spring 470 is fixedly connected to the bearing bracket 440, and the other end of the spring 470 is fixedly connected to the connecting block 460. The spring 470 applies a downward force to the connecting block 460.

[0060] Referring to Figure 1 , Figure 3 and Figure 4, a second rotating assembly 480 is installed on the second support 410. The second rotating assembly 480 includes a second motor 481 and two second gears 482. The second motor 481 is fixedly connected to the second support 410, and the main shaft of the second motor 481 is coaxially connected to the first water pressing roller 420. One of the second gears 482 is coaxially and fixedly connected to the first water pressing roller 420, and the other second gear 482 is coaxially and fixedly connected to the second water pressing roller 430. The two second gears 482 are meshed and connected. The web that has been hydroentangled by the hydroentangling machine 700 first passes through the water removing mechanism 400 before entering the drying oven 300. The spring 470 is used to push the second water pressing roller 430 and the first water pressing roller 420 to jointly extrude the web, and the driving of the second rotating assembly 480 is used to ensure the forward conveyance of the web, further extruding and discharging the water contained in the web, reducing the moisture in the web and then drying it, improving the drying efficiency of the web; the spring 470 and the connecting block 460 are used to increase the extrusion force on the web while making the gap between the first water pressing roller 420 and the second water pressing roller 430 adjustable, so that the water removing mechanism 400 can extrude and remove water from webs of different thicknesses, improving the applicability of the water removing mechanism 400; since the change in the web thickness is within a certain range, the two second gears 482 can still mesh together after the web thickness changes, thus ensuring the operation of the water removing mechanism 400.

[0061] Refer to Figure 1 and Figure 3 , a water collecting tank 490 is fixedly connected to the second support 410. The water collecting tank 490 is located below the first water pressing roller 420 and the second water pressing roller 430. The water collecting tank 490 has an upward opening, and a return pipe 491 is fixedly connected to the bottom of the water collecting tank 490. The return pipe 491 is communicated with the inside of the water collecting tank 490, and the end of the return pipe 491 away from the water collecting tank 490 is communicated with the water storage tank 110. The water flow generated by the extrusion of the first water pressing roller 420 and the second water pressing roller 430 on the web falls into the water collecting tank 490, and then returns to the water storage tank 110 through the return pipe 491, reducing the waste of water resources and at the same time forming a supplement to the pre-wetted water in the water storage tank 110.

[0062] Refer to Figure 1 and Figure 5 , a plurality of support rollers 310 are rotatably connected in the drying oven 300. The rotation axes of each support roller 310 are all parallel to the rotation axis of the extrusion roller 150. The plurality of support rollers 310 are arranged at intervals along the web conveyance direction. One of the adjacent two support rollers 310 is located near the top of the drying oven 300, and the other is located near the bottom. After the web enters the drying oven 300, it sequentially bypasses the plurality of support rollers 310 and then exits from the other end of the drying oven 300.

[0063] A drying mechanism 320 is installed on the drying box 300. The drying mechanism 320 includes a hot air blower 330. The hot air blower 330 is located on one side of the drying box 300. An air outlet pipe 331 is connected to the air outlet of the hot air blower 330, and the air outlet pipe 331 is inserted into the drying box 300. An air pipe 340 is installed between every two adjacent support rollers 310. The length direction of the air pipe 340 is parallel to the rotation axis of the support roller 310. Multiple air pipes 340 are fixedly connected to the air outlet pipe 331, and multiple air pipes 340 are all communicated with the air outlet pipe 331. A plurality of ventilation holes 341 are opened above each air pipe 340, and the plurality of ventilation holes 341 are arranged at intervals along the length direction of the air pipe 340. By arranging the air pipe 340 between two adjacent support rollers 310, and then supplying hot air by the hot air blower 330, the hot air blows towards the fiber web through the plurality of ventilation holes 341 on the air pipe 340 to dry the fiber web; by using the serpentine winding of the fiber web in the drying box 300, the windward area of the fiber web is increased, thereby improving the drying rate of the fiber web.

[0064] Refer to Figure 5 , Figure 6 and Figure 7 , during the process of drying the fiber web, due to the relatively fast drying rate, the edges of the fiber web are likely to warp, and the warping will affect the production quality of the fiber web; in order to reduce the problem that the fiber web is prone to warping during drying, multiple sets of leveling mechanisms 500 are installed in the drying box 300.

[0065] One set of leveling mechanism 500 is arranged on each air pipe 340. Each set of leveling mechanism 500 includes two sets of support components 510 and two clamping plates 520. The two clamping plates 520 are respectively located on both sides of the fiber web. Clamping grooves 521 are opened on the mutually approaching sides of the two clamping plates 520, and the two clamping grooves 521 respectively clamp both sides of the fiber web. A plurality of elastic rubber blocks 522 are fixedly connected to the opposite side walls of each clamping groove 521, and the plurality of elastic rubber blocks 522 fixedly connected to the same side wall of the clamping groove 521 are arranged at equal intervals along the length direction of the clamping plate 520; the elastic rubber blocks 522 are used to protect the fiber web and reduce the possibility of the fiber web being worn, and at the same time, the elastic rubber blocks 522 can clamp and level fiber webs with different thicknesses by their own elasticity.

[0066] Each clamping plate 520 is hollowly arranged. A plurality of ventilation holes 523 are opened on the groove side walls of the clamping plate 520 between two adjacent elastic rubber blocks 522, and each ventilation hole 523 is communicated with the inside of the clamping plate 520. The two sets of support components 510 are both installed on the air pipe 340. The two sets of support components 510 are respectively located at positions close to both ends of the air pipe 340. The two sets of support components 510 are arranged in one-to-one correspondence with the two clamping plates 520, and the support component 510 is used to support its corresponding clamping plate 520.

[0067] Reference Figure 5 、 Figure 6 and Figure 8 , each set of support components 510 includes a fixed ring 511 and a sliding ring 512 sleeved on the ventilation pipe 340. The fixed ring 511 is fixedly connected to the ventilation pipe 340, the sliding ring 512 is slidably connected to the ventilation pipe 340. A corrugated pipe 513 is sleeved on the outer side of the ventilation pipe 340. The corrugated pipe 513 is located between the fixed ring 511 and the sliding ring 512. One end of the corrugated pipe 513 is fixedly connected to the fixed ring 511, and the other end of the corrugated pipe 513 is fixedly connected to the sliding ring 512. A communicating pipe 524 is fixedly connected to the clamping plate 520. One end of the communicating pipe 524 is communicated with the inside of the clamping plate 520, and the other end of the communicating pipe 524 is communicated with the corrugated pipe 513 corresponding to the clamping plate 520. A support rod 525 is fixedly connected to each clamping plate 520. The end of the support rod 525 away from its clamping plate 520 is fixedly connected to the corresponding sliding ring 512. When drying the fiber web, the clamping plates 520 on both sides of the fiber web are used to clamp the two side edges of the fiber web, and part of the ventilation holes 341 on the ventilation pipe 340 are covered by the corrugated pipe 513, so that the hot air ejected from the ventilation holes 341 can enter the corrugated pipe 513, and then be ejected from the air-permeable holes 523 on the clamping plate 520 through the communicating pipe 524, and then jet-dry the edge of the fiber web, so that while ensuring the drying effect of the edge of the fiber web, the possibility of the edge of the fiber web warping is reduced, and the production quality of the fiber web is improved.

[0068] Reference Figure 5 and Figure 6, there are multiple sets of driving components 530 installed in the drying box 300. The multiple sets of driving components 530 are arranged in one-to-one correspondence with multiple ventilation pipes 340. Each set of driving components 530 includes a bidirectional lead screw 531. The bidirectional lead screw 531 is rotatably connected to the drying box 300. The bidirectional lead screw 531 is located on one side of its corresponding ventilation pipe 340. The rotation axis of the bidirectional lead screw 531 is parallel to the length direction of the ventilation pipe 340. One end of the bidirectional lead screw 531 passes through the drying box 300 and is fixedly connected to a handwheel 533. Two sliders 532 are threadedly connected to the bidirectional lead screw 531. The thread rotation directions of the two sliders 532 connected to the bidirectional lead screw 531 are opposite. The two sliders 532 are arranged in one-to-one correspondence with two sliding rings 512 slidably connected to the adjacent ventilation pipe 340. The slider 532 is fixedly connected to its corresponding sliding ring 512. By rotating the bidirectional lead screw 531 to drive the two sliders 532 to move, the two sliders 532 move to drive the two sliding rings 512 to move, thereby driving the clamping plates 520 on both sides of the fiber web to move, so that the clamping plates 520 can clamp and level fiber webs of different widths, improving the applicability of the leveling mechanism 500. While driving the clamping plates 520 to move, the two sliding rings 512 slide simultaneously, so that the corrugated pipe 513 can cover more ventilation holes 341, and then increase the amount of hot air ejected from the ventilation holes 523, improving the drying effect of the edge of the fiber web.

[0069] Refer to Figure 1 and Figure 2 , a temperature control mechanism 600 is installed on the water storage tank 110. The temperature control mechanism 600 includes an exhaust pipe 610 fixedly connected to the drying box 300. The exhaust pipe 610 is communicated with the inside of the drying box 300. One end of the exhaust pipe 610 away from the drying box 300 penetrates into the water storage tank 110. A plurality of spray pipes 620 are communicated with the exhaust pipe 610. The plurality of spray pipes 620 are arranged at intervals along the length of the exhaust pipe 610. One end of each spray pipe 620 away from the exhaust pipe 610 is inserted into the pre-wetted water in the water storage tank 110, and one end of each spray pipe 620 away from the exhaust pipe 610 is inclined in the same direction. After the hot air in the drying box 300 dries the fiber web, it enters the exhaust pipe 610, and then is sprayed into the pre-wetted water in the water storage tank 110 through the plurality of spray pipes 620, and then heats and raises the temperature of the pre-wetted water. The warm water can make the fiber rods in the fiber web softer and improve the braiding effect of the fibers; especially in cold winters, the improvement of the fiber braiding effect is more obvious; by inclining the plurality of spray pipes 620 in the same direction, the hot air can push the pre-wetted water to flow when passing into the pre-wetted water, and the flow of the pre-wetted water is used to increase the heating rate of the pre-wetted water.

[0070] Refer to Figure 2, in order to facilitate the control of the temperature in the water storage tank 110, a temperature sensor 630 is provided in the water storage tank 110. The temperature sensor 630 is used to detect the water temperature in the water storage tank 110; an air outlet pipe 640 is connected to the exhaust pipe 610, and a first electric control valve 650 is installed on the air outlet pipe 640. The first electric control valve 650 is used to control the opening or closing of the air outlet pipe 640; a second electric control valve 660 is installed on the exhaust pipe 610. The second electric control valve 660 is located between the air outlet pipe 640 and the jet pipe 620. The second electric control valve 660 is used to control the opening or closing of the exhaust pipe 610. Both the first electric control valve 650 and the second electric control valve 660 are electrically connected to the temperature sensor 630. The temperature sensor 630 is used to detect the temperature of the pre-wetting water in the water storage tank 110. When the temperature is relatively low, the first electric control valve 650 is closed and the second electric control valve 660 is opened, so that the hot air can be introduced into the pre-wetting water to heat and raise the temperature of the pre-wetting water; when the temperature of the pre-wetting water is too high, the first electric control valve 650 is opened and the second electric control valve 660 is closed, so that the hot air is discharged through the air outlet pipe 640, thereby realizing the control of the temperature of the pre-wetting water and ensuring that the temperature of the pre-wetting water is in a suitable state.

[0071] The implementation principle of a non-woven fabric production process according to an embodiment of the present application is as follows: a pre-wetting device 100 is arranged on one side of a hydroentangling machine 700, so that the fiber web enters the hydroentangling machine 700 after being pre-wetted with water by the pre-wetting device 100. The pre-wetting with water can discharge the air inside the fiber web and improve the knitting effect of the fibers in the fiber web;

[0072] By connecting the drying box 300 and the water storage tank 110 through the exhaust pipe 610, the hot air for drying the fiber web in the drying box 300 can be introduced into the pre-wetting water in the water storage tank 110 through the exhaust pipe 610 and the jet pipe 620. The hot air is used to heat and raise the temperature of the pre-wetting water in the water storage tank, so that the pre-wetting water is in a warm water state. The warm water can make the fibers in the fiber web softer and further improve the knitting effect of the fibers.

[0073] The above are all the preferred embodiments of the present application. The protection scope of the present application is not limited by this. Therefore, all equivalent changes made according to the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A non-woven fabric production process, characterized in that: The following steps are involved: S1. Opening of raw materials: opening of raw materials and removing impurities and foreign fibers from raw materials; S2, Combing and laying: The loosened raw fibers are combed and mixed through a carding machine, and the fiber web is processed into a predetermined thickness and width according to the process requirements before output; S3, pre-wetting the fiber web: the combed fiber web is transported to the pre-wetting device (100), the pre-wetting device (100) adds water to pre-wet the fiber web, and uses the temperature control mechanism (600) to heat and keep the pre-wetting water warm; S4, hydroentanglement shaping: the pre-wetted fiber web is conveyed to the hydroentanglement machine (700), and the fiber web is hydroentangled and shaped by the hydroentanglement machine (700); S5, drying: using a drying device (200) to dry the hydroentangled fiber web; S6, winding: using a winding device to wind the dried fiber web onto a winding roller; In step S3, the pre-wetting device (100) comprises a water storage tank (110) containing pre-wetting water, a pre-wetting roller (120) and a squeezing mechanism (130); the pre-wetting roller (120) is rotatably connected to the water storage tank (110); the bottom of the pre-wetting roller (120) is submerged in the pre-wetting water in the water storage tank (110); the squeezing mechanism (130) is arranged above the water storage tank (110); and the squeezing mechanism (130) is used to squeeze and remove water from the pre-wetted fiber web; The drying device (200) described in step S5 comprises a drying box (300) and a water removal mechanism (400), wherein the water removal mechanism (400) comprises a second bracket (410), a first water pressure roller (420), a second water pressure roller (430), two connecting blocks (460) and two springs (470), wherein the second bracket (410) is fixedly connected to the drying box (300), the first water pressure roller (420) is rotatably connected to the second bracket (410), the two connecting blocks (460) are both slidably connected to the second bracket (410), the second water pressure roller (430) is rotatably connected between the two connecting blocks (460), the two springs (470) are arranged in a one-to-one correspondence with the two connecting blocks (460), and the spring (470) is arranged between the corresponding connecting block (460) and the second bracket (410) to push the second water pressure roller (430) to move in a direction close to the first water pressure roller (420); A plurality of support rollers (310) for supporting the web are rotatably connected inside the drying box (300). A drying mechanism (320) is provided on the drying box (300). The drying mechanism (320) includes a hot air blower (330) and a plurality of ventilation pipes (340). The plurality of ventilation pipes (340) are all connected inside the drying box (300). The plurality of ventilation pipes (340) are arranged at intervals along the conveying direction of the web. A plurality of ventilation holes (341) are formed in each ventilation pipe (340). The plurality of ventilation holes (341) are arranged at intervals along the length direction of the ventilation pipe (340). The hot air blower (330) is arranged on one side of the drying box (300). The plurality of ventilation pipes (340) are all communicated with the air outlet of the hot air blower (330); A plurality of leveling mechanisms (500) for preventing the web from warping are provided inside the drying box (300). A set of leveling mechanisms (500) is provided between every two adjacent support rollers (310). Each set of leveling mechanisms (500) includes two clamping plates (520). A clamping groove (521) for clamping the edge of the web is formed in each clamping plate (520). The two clamping plates (520) are respectively located on both sides of the web to clamp the two edges of the web. The two clamping plates (520) are both connected inside the drying box (300).

2. The non-woven fabric production process according to claim 1, characterized in that: A water collecting tank (490) for collecting the water extruded between the first water pressing roller (420) and the second water pressing roller (430) is fixedly connected to the second bracket (410). A return pipe (491) is communicated with the water collecting tank (490). One end of the return pipe (491) far away from the water collecting tank (490) is communicated with the water storage tank (110).

3. The non-woven fabric production process according to claim 1, characterized in that: Each clamping plate (520) is provided with a hollow structure. A plurality of elastic rubber blocks (522) are fixedly connected to opposite side walls of each clamping groove (521). The plurality of elastic rubber blocks (522) on the same side wall of the clamping groove (521) are arranged at intervals along the length direction of the clamping plate (520). Ventilation holes (523) are formed in the side wall of the clamping groove (521) between two adjacent elastic rubber blocks (522). The plurality of ventilation holes (523) are all communicated with the inside of the clamping plate (520). The inside of each clamping plate (520) is communicated with the air outlet of the hot air blower (330).

4. A non-woven fabric production process according to claim 3, characterized in that: Two sets of support components (510) are provided on each of the vent pipes (340). The two sets of support components (510) are arranged in one-to-one correspondence with two clamping plates (520). The support components (510) provided on the same vent pipe (340) are respectively located at positions close to both ends of the vent pipe (340). Each set of support components (510) includes a fixed ring (511), a bellows (513), and a sliding ring (512). The fixed ring (511) is fixedly connected to one end of the vent pipe (340). The sliding ring (512) is slidably connected to the vent pipe (340). The bellows (513) is sleeved on the vent pipe (340). The bellows (513) is fixedly connected between the fixed ring (511) and the sliding ring (512). A connecting pipe (524) is communicated with the clamping plate (520). The connecting pipe (524) is communicated with the bellows (513). The clamping plate (520) is fixedly connected to the sliding ring (512) connected to the bellows (513) communicated therewith. A driving component (530) is provided on one side of each vent pipe (340). The two sliding rings (512) located on the same vent pipe (340) are both connected to the driving component (530). The driving component (530) moves the two sliding rings (512).

5. A non-woven fabric production process according to claim 1, characterized in that: The temperature control mechanism (600) includes an exhaust pipe (610) and a jet pipe (620). One end of the exhaust pipe (610) is communicated with the inside of the drying box (300). The end of the exhaust pipe (610) far from the drying box (300) is inserted into the water storage tank (110). The jet pipe (620) is communicated with the exhaust pipe (610). The end of the jet pipe (620) far from the exhaust pipe (610) is inserted into the pre-wetted water in the water storage tank (110). The jet pipe (620) is inclinedly arranged.

6. The non-woven fabric production process according to claim 5, characterized in that: A temperature sensor (630) is provided in the water storage tank (110). An air outlet pipe (640) is communicated with the exhaust pipe (610). A first electric control valve (650) is provided on the air outlet pipe (640). A second electric control valve (660) is provided on the exhaust pipe (610). The second electric control valve (660) is located between the jet pipe (620) and the air outlet pipe (640). Both the first electric control valve (650) and the second electric control valve (660) are electrically connected to the temperature sensor (630).

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