A hot rolling device for nonwoven fabric production and a method thereof

Abstract

This invention relates to the field of hot rolling equipment technology, specifically to a hot rolling equipment and method for nonwoven fabric production. It includes a housing with an internal cavity, a hot rolling roll housed within the cavity, a cleaning mechanism, and a cooling mechanism. The cleaning mechanism includes a brush assembly and a cleaning component, each comprising opposing comb plates. A switching element is also provided within the cavity, and a rotatable air-blowing element is positioned between the comb plates. The cooling mechanism includes opposing cooling plates, with a cooling box at the lower end of each cooling plate and a heat dissipation box at the upper end. Bent heat-conducting pipes are mounted on the cooling plates, with both ends of the heat-conducting pipes connected to the cooling boxes. The brush belt is rotated by a rotating roller to clean impurities from the surface of the hot rolling roll. The switching element allows for position switching between the two comb plates, and the rotating air-blowing element blows away impurities from the comb plates furthest from the brush belt, ensuring continuous cleaning of the hot rolling roll surface by the brush belt.

Description

Technical Field

[0001] This invention relates to the field of hot rolling equipment technology, and more specifically, to a hot rolling equipment and method for nonwoven fabric production. Background Technology

[0002] Nonwoven fabric, also known as non-woven cloth, needle-punched cotton, needle-punched nonwoven fabric, etc., requires hot rolling processing through hot rolling equipment during the production of nonwoven fabric. Existing hot rolling equipment generally includes a frame, hot rolling rolls installed on the frame, a motor that drives the hot rolling rolls to rotate, and a controller that controls various components.

[0003] Currently, during the hot rolling process of nonwoven fabrics, some of the impurities on the surface of the nonwoven fabric adhere to the surface of the hot rolling roller after being bonded to it. This affects the temperature transfer of the hot rolling roller and the subsequent hot rolling effect of the nonwoven fabric. When hot rolling the next batch of nonwoven fabric, these impurities may also adhere to the surface of the nonwoven fabric again, thus affecting the quality of the nonwoven fabric. Summary of the Invention

[0004] The purpose of this invention is to provide a hot rolling apparatus and method for nonwoven fabric production, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A hot rolling device for nonwoven fabric production includes a shell with an internal cavity, a nonwoven fabric passing through the cavity, a rotatable hot rolling roller inside the cavity, a cleaning mechanism for cleaning the surface of the hot rolling roller, and a cooling mechanism for cooling the hot-rolled nonwoven fabric.

[0007] The cleaning mechanism includes a brushing assembly for brushing each hot rolling roll and a cleaning assembly for cleaning the brushing assembly. The brushing assembly includes several rotatable rollers, on which a brushing belt is sleeved. The outer surface of the brushing belt is provided with bristles. The cleaning assembly includes opposing comb plates. The cavity is also provided with a switching component for controlling the switching of the comb plates so that the comb plates are spaced to match the brushing belt. Rotatable air blowing components are provided between the comb plates. The air blowing components are used to blow air onto the comb plates that are away from the brushing belt. When the switching component switches the comb plates, it drives the air blowing components to rotate.

[0008] The cooling mechanism includes cooling plates positioned opposite each other on both sides of the nonwoven fabric. A cooling box is located at the lower end of the cooling plates, and a heat dissipation box is located at the upper end of the cooling plates. Curved heat-conducting pipes are located on the opposite sides of the cooling plates. The two ends of the heat-conducting pipes are connected to the cooling box. Coolant is contained in the cooling box and the heat-conducting pipes. A pusher is located inside the cooling box to propel the coolant back and forth through the heat-conducting pipes. The upper end of the heat-conducting pipes extends into the heat dissipation box. A heat dissipation component is located inside the heat dissipation box to dissipate heat from the coolant in the heat-conducting pipes. The heat dissipation component is also used to supply air to the air blowing component.

[0009] Furthermore, mounting plates are provided opposite each other inside the cavity, and sliding grooves are provided opposite each other on the mounting plates. Sliding blocks that slide within the sliding grooves are provided at the upper and lower ends of the comb plate.

[0010] The switching component includes a switching shaft rotatably disposed between mounting plates. The switching shaft is located between comb plates. At both ends of the switching shaft, there are switching plates extending to the corresponding comb plates. The switching plates are provided with switching grooves along their axial direction. The corresponding ends of the comb plates are provided with switching posts that extend into the corresponding switching grooves and slide.

[0011] Furthermore, the air blowing component includes an air blowing pipe rotatably disposed between the mounting plates, an air blowing nozzle is provided on the outer side wall of the air blowing pipe, a first gear is provided at the upper and lower ends of the air blowing pipe, and a second gear is provided on the switching shaft to mesh with the corresponding first gear.

[0012] Furthermore, the mounting plate is equipped with a servo motor for driving the rotation of the switching axis.

[0013] Furthermore, the cooling box is provided with a first cavity and a second cavity opposite to each other, and the two ends of the heat pipe are respectively connected to the first cavity and the second cavity;

[0014] The pusher includes a piston plate that can be raised and lowered in the first cavity and the second cavity. The piston plate is raised and lowered at intervals to realize the reciprocating flow of coolant in the heat pipe. The bottom of the cooling box is provided with a drive unit for driving the piston plate to be raised and lowered at intervals.

[0015] Furthermore, the piston plate is provided with a drive shaft extending through the cooling box, and the extended end of the drive shaft is hinged to a traction shaft.

[0016] The driving component includes a driving disc corresponding to the piston plate and located at the bottom of the cooling box. The driving discs are connected to each other near the edge by a fixed shaft. The lower end of the traction shaft is rotatably connected to the fixed shaft. The two sets of driving discs rotate synchronously to realize the interval lifting and lowering of the piston plate.

[0017] Furthermore, the bottom wall of the cooling box extends downward to form a mounting section, and a connecting shaft for connecting two sets of opposing drive discs is provided between the mounting sections. A first motor for driving the connecting shaft to rotate is provided on the mounting section.

[0018] Furthermore, the heat sink is provided with an upper chamber and a lower chamber. The upper sidewall of the heat pipe extends into the lower chamber, which contains heat-conducting oil. The lower chamber also has heat dissipation fins that extend into the upper chamber. The heat dissipation components are used to drive the airflow in the upper chamber.

[0019] Furthermore, the upper cavity is provided with openings at both ends. The heat dissipation component includes an air inlet shroud at one end of the upper cavity, with rotatable fan blades inside the air inlet shroud for blowing air into the upper cavity. The heat dissipation component also includes an air guide shroud at the other end of the upper cavity, with an air supply pipe connected to the air blowing pipe on the air guide shroud.

[0020] The present invention also provides a method for hot rolling of nonwoven fabrics, wherein the aforementioned hot rolling apparatus for nonwoven fabric production specifically includes the following steps:

[0021] S1. Extend one end of the nonwoven fabric into the cavity, and pass it through the relative hot rollers and cooling mechanism in sequence before exiting the cavity and connecting it to the winding device.

[0022] S2. The winding device winds up the nonwoven fabric. During this process, the hot rolling roller is started and rotated to perform hot rolling on the nonwoven fabric.

[0023] S3. In step S2, the rotating roller drives the brush belt to clean the surface of the hot rolling roller. At the same time, the first motor is started to drive the pusher to work, so that the coolant flows back and forth in the heat conduction pipe to cool the hot rolled non-woven fabric. At the same time, the heat dissipation component works to dissipate heat from the coolant flowing in the heat conduction pipe, ensuring the cooling effect of the coolant on the non-woven fabric. At the same time, air is supplied to the air blowing pipe so that the air blowing nozzle can blow air to the comb plate away from the brush belt, so that the lint on the comb plate falls off.

[0024] S4. In step S3, after running for a period of time, the servo motor is started to drive the switching component to switch the position of the comb plate so that the comb plate after removing the lint fits into the brush belt and moves the comb plate containing lint away from the brush belt. During this process, the air pipe is rotated to change the direction of the air nozzle so that it blows air on the comb plate away from the brush belt again so that the lint on the comb plate falls off, so that the comb plate can switch the position again to remove the lint on the brush belt.

[0025] Compared with the prior art, the beneficial effects of the present invention are:

[0026] 1. This invention uses a rotating roller to drive the brush belt to rotate, which can clean the lint on the surface of the hot rolling roll. The position of the two comb plates is switched by a switching component to ensure that the two comb plates are in close contact with the brush belt. The air blowing component rotates so that the air blowing component can blow off the lint from the comb plates that are far away from the brush belt. This allows the cleaning component to remove the lint from the brush belt without stopping the brush belt, so that the brush belt can continuously clean the surface of the hot rolling roll.

[0027] 2. In this invention, the coolant is propelled to circulate within the heat pipe by a pusher, and the coolant is cooled by a heat dissipation component, so that the coolant can continuously cool the nonwoven fabric. At the same time, the heat dissipation component can also supply air to the air blowing component, so that the air blowing component can blow off impurities on the comb plate. Attached Figure Description

[0028] Figure 1 This is one of the structural schematic diagrams of a hot rolling device for nonwoven fabric production according to the present invention.

[0029] Figure 2 This is the second schematic diagram of a hot rolling device for nonwoven fabric production according to the present invention.

[0030] Figure 3 This is a cross-sectional schematic diagram of the hot rolling device at the cleaning structure in this invention.

[0031] Figure 4 This is a schematic diagram of the cleaning component on the mounting plate in this invention.

[0032] Figure 5 for Figure 4 An enlarged schematic diagram of part A in the middle.

[0033] Figure 6 This is a schematic diagram of the cooling mechanism in this invention.

[0034] Figure 7 This is a cross-sectional schematic diagram of the cooling mechanism in this invention.

[0035] The meanings of the labels in the diagram are as follows:

[0036] 100. Shell; 101. Cavity; 110. Hot rolling roll; 200. Mounting plate; 201. Second motor; 210. Comb plate; 220. Brush belt; 230. Cooling plate; 231. Cooling box; 232. Heat dissipation box; 240. Heat conduction pipe; 301. Sliding groove; 310. Rotating roller; 320. Switching shaft; 321. Switching plate; 322. Switching groove; 323. Second gear; 330. Air blowing pipe; 331. First gear; 3 40. Baffle; 410. Servo motor; 501. Switching column; 510. Air nozzle; 601. Mounting part; 610. Drive disk; 620. Connecting shaft; 621. First motor; 631. Upper cavity; 632. Heat dissipation fins; 640. Air inlet cover; 641. Fan blade; 650. Air guide cover; 651. Air supply pipe; 701. First cavity; 702. Second cavity; 710. Piston plate; 720. Drive shaft; 730. Traction shaft. Detailed Implementation

[0037] To further understand the content of this invention, a detailed description of the invention will be provided in conjunction with the accompanying drawings and embodiments. It should be understood that the embodiments are merely illustrative and not limiting of the invention.

[0038] The following is in conjunction with the appendix Figures 1-7 This embodiment will be described in further detail.

[0039] like Figure 1 As shown, a hot rolling device for nonwoven fabric production in this embodiment includes a housing 100 with an internal cavity 101, a nonwoven fabric passing through the cavity 101, a rotatable hot rolling roller 110 inside the cavity 101, a cleaning mechanism for cleaning the surface of the hot rolling roller 110, and a cooling mechanism for cooling the hot-rolled nonwoven fabric.

[0040] In this embodiment, two hot rolling rollers 110 are arranged opposite each other along the vertical direction of the housing 100. In actual use, the non-woven fabric entering the cavity 101 passes between the hot rolling rollers 110, so that the two hot rolling rollers 110 can rotate to perform hot rolling operation on the non-woven fabric.

[0041] In actual use, because the surface of the nonwoven fabric contains lint, when the hot rolling roller 110 rotates to perform hot rolling operation, the lint easily adheres to the surface of the hot rolling roller 110, thereby affecting the temperature transfer of the hot rolling roller 110 and resulting in poor hot rolling effect on the nonwoven fabric. In this embodiment, the cleaning mechanism is set up so that it can better clean the surface of the hot rolling roller 110 to ensure the continuous hot rolling effect of the hot rolling roller 110 on the nonwoven fabric.

[0042] The cooling mechanism cools and solidifies the hot-rolled nonwoven fabric to prevent deformation due to residual heat, which would affect the quality of subsequent nonwoven fabrics.

[0043] Combination Figures 2-3 As shown, in this embodiment, the cleaning mechanism includes a brushing assembly for brushing each hot rolling roll 110 and a cleaning assembly for cleaning the brushing assembly. The brushing assembly includes several rotatable rollers 310, and a brushing belt 220 is sleeved on the rollers 310. The outer surface of the brushing belt 220 is provided with bristles. The cleaning assembly includes opposing comb plates 210. The cavity 101 is also provided with a switching member for controlling the switching of the comb plates 210 so that the comb plates 210 are spaced to cooperate with the brushing belt 220. Rotatable air blowing members are provided between the comb plates 210. The air blowing members are used to blow air onto the comb plates 210 that are away from the brushing belt 220. When the switching member switches the comb plates 210, it is used to drive the air blowing members to rotate.

[0044] The cooling mechanism includes cooling plates 230 disposed opposite each other on both sides of the nonwoven fabric. A cooling box 231 is provided at the lower end of the cooling plate 230, and a heat dissipation box 232 is provided at the upper end of the cooling plate 230. A curved heat-conducting pipe 240 is provided on the opposite sides of the cooling plates 230. The two ends of the heat-conducting pipe 240 are connected to the cooling box 231. Cooling liquid is contained in the cooling box 231 and the heat-conducting pipe 240. A pushing component is provided in the cooling box 231 to push the coolant to flow back and forth through the heat-conducting pipe 240. The upper end of the heat-conducting pipe 240 extends into the heat dissipation box 232. A heat dissipation component is provided in the heat dissipation box 232 to dissipate heat from the coolant in the heat-conducting pipe 240. The heat dissipation component is also used to supply air to the air blowing component.

[0045] In this embodiment, the number of rollers 310 is designed to be three, all of which are arranged along the vertical direction of the housing 100, that is, parallel to the hot rolling rollers 110. For example... Figure 2 As shown, the brush belt 220 is sleeved between the three rotating rollers 310. One side of the brush belt 220 is engaged with the corresponding hot rolling roller 110, so that the bristles on it are in contact with the outer surface of the corresponding hot rolling roller 110. This causes the rotating roller 310 to rotate, which drives the brush belt 220 to rotate, so that the bristles can remove the impurities attached to the surface of the hot rolling roller 110, thereby ensuring the hot rolling effect of the hot rolling roller 110.

[0046] Among them, the cleaning component can remove the lint on the brush belt 220 without stopping the brush belt 220, so as to ensure the cleaning effect of the brush belt 220 on the surface of the hot rolling roll 110.

[0047] In this embodiment, the arrangement of the comb plate 210, the switching component, and the air blowing component allows the comb plate 210 to adhere to the corresponding brush belt 220 during actual use. The rotation of the brush belt 220 causes the comb plate 210 to scrape away debris from the brush belt 220. The switching component allows the two comb plates 210 to be switched in position to ensure they are spaced apart and adhered to the brush belt 220. The air blowing component rotates to engage with the comb plate 210 furthest from the brush belt 220, blowing away debris from the comb plate 210. Thus, the cleaning component can remove debris from the brush belt 220 without stopping it, ensuring continuous cleaning of the hot roll 110 surface by the brush belt 220.

[0048] In this embodiment, combined with Figure 6 As shown, a slot for the nonwoven fabric to pass through is formed between the two cooling plates 230. The heat pipe 240 is attached to the corresponding cooling plate 230. Both the heat pipe 240 and the cooling plate 230 are made of materials with good thermal conductivity. This allows the coolant to flow in the heat pipe 240, and the heat dissipated by the nonwoven fabric can be carried away through the heat exchange of the cooling plate 230, thereby achieving the cooling of the nonwoven fabric.

[0049] The heat dissipation component is designed to dissipate heat from the coolant in the heat pipe 240, thereby cooling the coolant and ensuring that the coolant flows continuously within the heat pipe 240 to continuously cool the nonwoven fabric.

[0050] In order to better achieve the flow of coolant and improve its cooling effect on nonwoven fabric, in this embodiment, the pusher is set so that it can push the coolant to flow back and forth in the heat pipe 240.

[0051] Combination Figure 4 and Figure 5 As shown, in this embodiment, a mounting plate 200 is provided opposite to each other inside the cavity 101, and a sliding groove 301 is provided opposite to each other on the mounting plate 200. The upper and lower ends of the comb plate 210 are provided with sliding blocks that slide within the sliding groove 301.

[0052] The switching component includes a switching shaft 320 rotatably disposed between mounting plates 200. The switching shaft 320 is located between comb plates 210. At both ends of the switching shaft 320, there are switching plates 321 extending to the corresponding comb plates 210. The switching plates 321 are provided with switching grooves 322 along their axial direction. The corresponding ends of the comb plates 210 are provided with switching posts 501 that slide into the corresponding switching grooves 322.

[0053] In this embodiment, the sliding groove 301 is disposed on the opposite side of the mounting plate 200 along the moving direction of the comb plate 210. The sliding block and the sliding groove 301 are configured to better achieve the sliding installation of the comb plate 210 between the mounting plates 200.

[0054] In this embodiment, the structure allows the switching shaft 320 to rotate in both directions during actual use, causing the switching plate 321 to swing. This causes the sidewall of the switching groove 322 on the plate to press against the corresponding switching post 501, thereby pushing the two comb plates 210 to move relative to each other, thus achieving the comb plates 210 to be in close contact with the brush belt 220.

[0055] Specifically, in order to better realize the forward and reverse rotation of the switching shaft 320, the mounting plate 200 is provided with a servo motor 410 for driving the rotation of the switching shaft 320.

[0056] It should be noted that the mounting plate 200 is also used for the rotating installation of the rotating roller 310 and the hot rolling roller 110. The two ends of the rotating roller 310 are rotatably mounted on the mounting plate 200 through bearings. In order to realize the rotation of the brush belt 220, the mounting plate 200 is provided with a second motor 201 for driving one of the three rotating rollers 310 to rotate.

[0057] In this embodiment, the air blowing component includes an air blowing pipe 330 rotatably disposed between the mounting plates 200. An air blowing nozzle 510 is provided on the outer side wall of the air blowing pipe 330. A first gear 331 is provided at the upper and lower ends of the air blowing pipe 330. A second gear 323 that meshes with the corresponding first gear 331 is provided on the switching shaft 320.

[0058] In this embodiment, the air blowing pipe 330 is arranged along the vertical direction of the housing 100, that is, parallel to the switching shaft 320. Its two ends are rotatably mounted between the mounting plates 200 through bearings. In actual use, when the heat dissipation component is used to supply air to the air blowing component, that is, the air blowing nozzle 510 can blow air to the comb plate 210 away from the brush belt 220, so that the debris on the comb plate 210 is blown away from the comb plate 210 under the action of wind force, and finally falls onto the mounting plate 200 below for collection due to gravity.

[0059] The first gear 331 and the second gear 323 are configured such that the rotation of the switching shaft 320 can drive the air blowing pipe 330 to rotate, thereby enabling the air blowing pipe 330 to rotate when the comb plate 210 is switched, so that the orientation of the air blowing nozzle 510 on it is changed, so that it always cooperates with the comb plate 210 away from the brush belt 220, so that it can blow off the lint on the comb plate 210.

[0060] It should be noted that, in order to prevent the blown-off lint from re-attaching to the nonwoven fabric, in this embodiment, the mounting plate 200 between the two cleaning components is provided with baffles 340 located on both sides of the hot-rolled nonwoven fabric. The baffles 340 are used to block the flow, so that the hot-rolling effect of the nonwoven fabric is better.

[0061] Combination Figure 7 As shown, in this embodiment, a first cavity 701 and a second cavity 702 are provided opposite to each other in the cooling box 231, and the two ends of the heat pipe 240 are respectively connected to the first cavity 701 and the second cavity 702.

[0062] The pusher includes a piston plate 710 that can be raised and lowered in the first cavity 701 and the second cavity 702. The piston plate 710 is raised and lowered at intervals to realize the reciprocating flow of coolant in the heat pipe 240. The bottom of the cooling box 231 is provided with a drive for driving the piston plate 710 to be raised and lowered at intervals.

[0063] In this embodiment, the first cavity 701 and the second cavity 702 are separated from each other, and the two ends of the heat pipe 240 are connected to the first cavity 701 and the second cavity 702 respectively, so that the coolant can flow and switch between the first cavity 701 and the second cavity 702 through the heat pipe 240.

[0064] The piston plate 710 and the driving component are arranged such that the driving component can push the piston plate 710 in the first cavity 701 and the second cavity 702 to move relative to each other, thereby enabling the coolant to flow between the first cavity 701 and the second cavity 702, that is, to realize the reciprocating flow of coolant in the heat pipe 240.

[0065] Specifically, the sidewall of the piston plate 710 slides and seals against the sidewall of the first cavity 701 or the second cavity 702, thereby ensuring the flow effect of the piston plate 710 in driving the coolant.

[0066] In this embodiment, the piston plate 710 is provided with a drive shaft 720 extending through the cooling box 231, and the extended end of the drive shaft 720 is hinged to a traction shaft 730.

[0067] The driving component includes a driving disc 610 corresponding to the piston plate 710 and located at the bottom of the cooling box 231. The driving discs 610 are connected to each other near the edge by a fixed shaft. The lower end of the traction shaft 730 is rotatably connected to the fixed shaft. The two sets of driving discs 610 rotate synchronously to realize the interval lifting and lowering of the piston plate 710.

[0068] In this embodiment, the bottom wall of the cooling box 231 extends downward to form a mounting part 601. A connecting shaft 620 for connecting two sets of opposing drive discs 610 is provided between the mounting parts 601. A first motor 621 for driving the connecting shaft 620 to rotate is provided on the mounting part 601.

[0069] In this embodiment, the lower end of the drive shaft 720 extends through the cooling box 231, thereby restricting the drive shaft 720 to only move up and down. The first motor 621 can drive the connecting shaft 620 to rotate, thereby driving the two sets of relative drive discs 610 to rotate synchronously. Since the upper end of the traction shaft 730 is hinged to the corresponding drive shaft 720 and the lower end is hinged to the corresponding fixed shaft, the traction shaft 730 can pull the drive shaft 720, realizing the interval lifting and lowering of the piston plate 710 in the first cavity 701 and the second cavity 702, so as to realize the reciprocating flow of coolant in the heat pipe 240.

[0070] In this embodiment, the heat sink 232 is provided with an upper cavity 631 and a lower cavity. The upper side wall of the heat pipe 240 extends into the lower cavity, which contains heat-conducting oil. The lower cavity is also provided with heat dissipation fins 632 extending into the upper cavity 631. The heat dissipation components are used to drive the airflow in the upper cavity 631.

[0071] In this embodiment, the heat in the coolant inside the heat pipe 240 can be conducted through the contact of the heat-conducting oil, and the heat in the heat-conducting oil can be conducted to the upper cavity 631 through the heat dissipation fins 632. With the air flow in the upper cavity 631, the heat on the heat dissipation fins 632 is dissipated, thereby dissipating the heat in the coolant inside the heat pipe 240 and cooling the coolant.

[0072] In this embodiment, the upper cavity 631 is provided with openings at both ends. The heat dissipation component includes an air inlet shroud 640 provided at one end of the upper cavity 631. The air inlet shroud 640 is provided with a rotatable fan blade 641, which is used to blow air into the upper cavity 631. The heat dissipation component also includes an air guide shroud 650 provided at the other end of the upper cavity 631. The air guide shroud 650 is provided with an air supply pipe 651 that connects to the air blowing pipe 330.

[0073] In this embodiment, a third motor for driving the fan blades 641 to rotate is provided on the air inlet shroud 640. This causes the fan blades 641 to rotate, allowing outside air to be blown into the upper cavity 631 through the air inlet shroud 640. The air entering the upper cavity 631 is guided by the air guide shroud 650 and introduced into the corresponding air blowing pipe 330 through the air supply pipe 651, thereby realizing the air flow in the upper cavity 631 so that the heat dissipation fins 632 can dissipate heat. At the same time, the flowing air can supply air to the air blowing pipe 330 so that the air blowing component can perform air blowing operation.

[0074] The present invention also provides a method for hot rolling of nonwoven fabric, which uses the above-mentioned hot rolling apparatus for nonwoven fabric production, and specifically includes the following steps:

[0075] S1. Extend one end of the nonwoven fabric into the cavity 101, and pass through the relative hot rolling roller 110 and the relative cooling plate 230 in sequence before exiting the cavity 101 and connecting it to the existing winding device.

[0076] S2. The winding device winds up the nonwoven fabric to allow it to move within the cavity 101. During this process, the hot rolling roller 110 is started and rotated to perform hot rolling on the nonwoven fabric.

[0077] S3. In step S2, the second motor 201 is started to drive the rotating roller 310 to rotate, so that the brush belt 220 rotates to clean the surface of the hot rolling roller 110. At the same time, the first motor 621 is started to drive the piston plate 710 to move up and down intermittently in the first cavity 701 and the second cavity 702, so that the coolant flows back and forth in the heat conduction pipe 240 to cool the hot-rolled nonwoven fabric. The third motor is started to drive the fan blade 641 to rotate, so that the coolant flowing in the heat conduction pipe 240 can dissipate heat and ensure the cooling effect of the coolant on the nonwoven fabric. At the same time, the fan blade 641 rotates to supply air into the air blowing pipe 330, so that the air blowing nozzle 510 can blow air to the comb plate 210 away from the brush belt 220, so that the lint on the comb plate 210 falls off.

[0078] S4. In step S3, after running for a period of time, the servo motor 410 is started to drive the switching shaft 320 to rotate, thereby driving the comb plate 210 to switch positions so that the comb plate 210 after removing lint fits into the brush belt 220 and moves the comb plate 210 containing lint away from the brush belt 220. During this process, the air pipe 330 is also driven to rotate so that the direction of the air nozzle 510 changes, so that it blows air again onto the comb plate 210 away from the brush belt 220, so that the lint on the comb plate 210 falls off, so that the comb plate 210 can switch positions again to remove lint from the brush belt 220.

[0079] In summary, the above description is only a preferred embodiment of the present invention. All equivalent changes and modifications made within the scope of the claims of the present invention should be covered by the present invention.

Claims

1. A hot rolling device for nonwoven fabric production, comprising a shell (100) with an internal cavity (101), a nonwoven fabric passing through the cavity (101), and a rotatable hot rolling roller (110) disposed within the cavity (101), characterized in that: The cavity (101) is provided with a cleaning mechanism for cleaning the surface of the hot rolling roll (110) and a cooling mechanism for cooling the nonwoven fabric after hot rolling. The cleaning mechanism includes a brushing assembly for brushing each hot rolling roll (110) and a cleaning assembly for cleaning the brushing assembly. The brushing assembly includes several rotatable rollers (310), and a brushing belt (220) is sleeved on the rollers (310). The outer surface of the brushing belt (220) is provided with bristles. The cleaning assembly includes opposing comb plates (210). The cavity (101) is also provided with a switching member for controlling the switching of the comb plates (210) so that the comb plates (210) are spaced to cooperate with the brushing belt (220). Rotatable air blowing members are provided between the comb plates (210). The air blowing members are used to blow air onto the comb plates (210) that are away from the brushing belt (220). When the switching member switches the comb plates (210), it is used to drive the air blowing members to rotate. The cooling mechanism includes cooling plates (230) disposed opposite each other on both sides of the nonwoven fabric. A cooling box (231) is provided at the lower end of the cooling plate (230), and a heat dissipation box (232) is provided at the upper end of the cooling plate (230). A curved heat-conducting pipe (240) is provided on the side of the cooling plate (230) that is far apart from each other. The two ends of the heat-conducting pipe (240) are connected to the cooling box (231). Cooling liquid is contained in the cooling box (231) and the heat-conducting pipe (240). A pusher is provided in the cooling box (231) to push the coolant to flow back and forth through the heat-conducting pipe (240). The upper end of the heat-conducting pipe (240) extends into the heat dissipation box (232). A heat dissipation component is provided in the heat dissipation box (232) to dissipate heat from the coolant in the heat-conducting pipe (240). The heat dissipation component is also used to supply air to the air blowing component. The cavity (101) is provided with mounting plates (200) facing each other, and the mounting plates (200) are provided with sliding grooves (301) facing each other. The upper and lower ends of the comb plate (210) are provided with sliding blocks that slide in the sliding grooves (301). The switching component includes a switching shaft (320) rotatably disposed between mounting plates (200). The switching shaft (320) is located between comb plates (210). At both ends of the switching shaft (320), there are switching plates (321) extending to the corresponding comb plates (210). A switching groove (322) is provided on the switching plate (321) along its axial direction. A switching post (501) is provided at the corresponding end of the comb plate (210) and slides into the corresponding switching groove (322). The air blowing component includes an air blowing pipe (330) rotatably disposed between the mounting plates (200), an air blowing nozzle (510) is provided on the outer side wall of the air blowing pipe (330), a first gear (331) is provided at the upper and lower ends of the air blowing pipe (330), and a second gear (323) is provided on the switching shaft (320) to mesh with the corresponding first gear (331). The heat sink (232) is provided with an upper cavity (631) and a lower cavity. The upper side wall of the heat pipe (240) extends into the lower cavity. The lower cavity contains heat-conducting oil. The lower cavity is also provided with heat dissipation fins (632) extending into the upper cavity (631). The heat dissipation components are used to drive the airflow in the upper cavity (631). The upper cavity (631) is open at both ends. The heat dissipation component includes an air inlet shroud (640) located at one end of the upper cavity (631). The air inlet shroud (640) is equipped with a rotatable fan blade (641) which is used to blow air into the upper cavity (631). The heat dissipation component also includes an air guide shroud (650) located at the other end of the upper cavity (631). The air guide shroud (650) is equipped with an air supply pipe (651) that connects to the air blowing pipe (330).

2. The hot rolling device for nonwoven fabric production according to claim 1, characterized in that: The mounting plate (200) is equipped with a servo motor (410) for driving the rotation of the switching shaft (320).

3. The hot rolling device for nonwoven fabric production according to claim 1, characterized in that: The cooling box (231) has a first cavity (701) and a second cavity (702) arranged opposite to each other, and the two ends of the heat pipe (240) are respectively connected to the first cavity (701) and the second cavity (702); The pusher includes a piston plate (710) that can be raised and lowered in the first cavity (701) and the second cavity (702). The piston plate (710) is raised and lowered at intervals to realize the reciprocating flow of coolant in the heat pipe (240). The bottom of the cooling box (231) is provided with a drive for driving the piston plate (710) to be raised and lowered at intervals.

4. The hot rolling device for nonwoven fabric production according to claim 3, characterized in that: The piston plate (710) is provided with a drive shaft (720) extending through the cooling box (231), and the extended end of the drive shaft (720) is hinged to a traction shaft (730). The driving component includes a corresponding piston plate (710) and a driving disc (610) located at the bottom of the cooling box (231). The driving discs (610) are connected to each other near the edge by a fixed shaft. The lower end of the traction shaft (730) is rotatably connected to the fixed shaft. The two sets of driving discs (610) rotate synchronously to realize the interval lifting and lowering of the piston plate (710).

5. The hot rolling device for nonwoven fabric production according to claim 4, characterized in that: The bottom wall of the cooling box (231) extends downward to form a mounting part (601). A connecting shaft (620) for connecting two sets of opposing drive discs (610) is provided between the mounting parts (601). A first motor (621) for driving the connecting shaft (620) to rotate is provided on the mounting part (601).

6. A method for hot rolling nonwoven fabric, characterized in that: The hot rolling apparatus for nonwoven fabric production according to any one of claims 1-5 specifically includes the following steps: S1. Extend one end of the nonwoven fabric into the cavity (101), and pass through the relative hot rolling roller (110) and cooling mechanism in sequence before exiting the cavity (101) and connecting it to the winding device; S2. The winding device winds up the nonwoven fabric. During this process, the hot rolling roller (110) is started and rotated to perform hot rolling operation on the nonwoven fabric. S3. After hot rolling in step S2, the rotating roller (310) drives the brush belt (220) to clean the surface of the hot rolling roller (110). At the same time, the first motor (621) is started to drive the pusher to work, so that the coolant flows back and forth in the heat pipe (240) to cool the hot rolled non-woven fabric. At the same time, the heat dissipation component works to dissipate the coolant flowing in the heat pipe (240) and ensure the cooling effect of the coolant on the non-woven fabric. At the same time, air is supplied to the air blowing pipe (330) so that the air blowing nozzle (510) can blow air to the comb plate (210) away from the brush belt (220) to make the lint on the comb plate (210) fall off. S4. After running for a period of time in step S3, start the servo motor (410) to drive the switching component to switch the position of the comb plate (210) so that the comb plate (210) after removing the lint fits into the brush belt (220) and moves the comb plate (210) containing lint away from the brush belt (220). During this process, drive the air pipe (330) to rotate so that the direction of the air nozzle (510) changes so that it blows air on the comb plate (210) away from the brush belt (220) again so that the lint on the comb plate (210) falls off, so that the comb plate (210) can switch the position again to remove the lint on the brush belt (220).

Images