Non-woven fabric film spraying device for non-woven fabric production and method thereof

Abstract

The invention relates to the technical field of non-woven fabric film spraying devices, and discloses a non-woven fabric film spraying device for non-woven fabric production and a method thereof.The non-woven fabric film spraying device comprises a feeding roller, a winding roller and a film spraying mechanism, a cooling mechanism is arranged below the film spraying mechanism and comprises a cooling roller and an extrusion roller, cooling cavities are formed in the two ends of the cooling roller, and the extrusion roller is arranged in the cooling cavity; a cooling flow channel communicated with the cooling cavity is distributed in the middle of the cooling roller, cooling liquid is contained in the cooling cavity and the cooling flow channel, a flow pushing assembly is arranged in the cooling cavity, and heat dissipation assemblies are arranged at the two ends of the cooling roller; a driving assembly is arranged below the cooling roller; a scraping and sweeping assembly is arranged below the cooling roller and comprises a base and a scraping plate, a plurality of scraping and sweeping plates are further arranged on the base, and the driving assembly is further used for driving the scraping and sweeping plates to move synchronously. According to the non-woven fabric cooling device, the flowing direction of the cooling liquid is switched, so that in the continuous working process of the cooling roller, the large temperature difference between the two ends of the cooling roller can be well avoided, and the non-woven fabric cooling effect is better.

Description

Technical Field

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

[0002] The conventional method for nonwoven fabric lamination is to heat and melt plastic particles into a fluid state using an extruder, then extrude them into a thin film through a narrow slit of a certain width, which covers the nonwoven fabric. After cooling and solidification, the lamination nonwoven fabric is obtained.

[0003] For example, the patent with publication number CN206567173U discloses a nonwoven fabric composite coating machine with a cooling device. Although it cools the nonwoven fabric on the cooling roller by connecting cold water pipes and recovery water pipes to both ends of the cooling roller so that cold water flows inside the cooling roller, in actual use, the cold water flows unidirectionally inside the cooling roller. This results in a lower temperature near the water inlet and a higher temperature near the water outlet. Consequently, there is a large temperature difference between the two ends of the cooling roller during continuous use, which affects its cooling effect on the nonwoven fabric. Summary of the Invention

[0004] The purpose of this invention is to provide a nonwoven fabric coating device 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: A nonwoven fabric coating device for nonwoven fabric production includes a feeding roller and a take-up roller, and a coating mechanism disposed between the feeding roller and the take-up roller. Below the coating mechanism is a cooling mechanism for cooling the coated nonwoven fabric. The cooling mechanism includes a rotatable cooling roller and a pressing roller. Cooling chambers are provided at both ends of the cooling roller. A cooling channel communicating with the cooling chambers is provided in the middle of the cooling roller. Cooling liquid is contained in the cooling chambers and the cooling channel. A flow-pushing component is provided in the cooling chamber for pushing the coolant through the cooling channel. Heat dissipation components are provided at both ends of the cooling roller for dissipating heat from the coolant in the cooling chamber. A drive assembly is located below the cooling roller, which is used to drive the flow propulsion assembly and the heat dissipation assembly. Below the cooling roller is a scraping assembly for scraping the surface of the cooling roller. The scraping assembly includes a base and an adjustable scraper mounted on the base. The scraper is used to conform to the surface of the cooling roller. The base is also provided with multiple scraping plates for scraping the scraper. The drive assembly is also used to drive the multiple scraping plates to move synchronously.

[0006] Furthermore, the propulsion assembly includes a piston plate slidably disposed within the cooling chamber, and driving components for driving the piston plate to move are provided at both ends of the cooling roller; The driving component includes a mounting base with a rotatable shaft on the mounting base. The outer wall of the shaft has a wave-shaped driving groove connected end to end along its circumference. The piston plate has a rotatable driving cylinder that covers the shaft. The mounting base has a guide rod that passes through the driving cylinder. The inner wall of the driving cylinder has a driving column that slides in the driving groove. The rotation of the shaft is used to drive the piston plate to reciprocate.

[0007] Furthermore, the cooling roller has shafts at both ends that connect to the corresponding cooling chambers and are used to install the drive components. A first gear is provided on the shaft, and a second gear that can rotate and meshes with the first gear is provided on the mounting base along its circumference. A toothed ring that meshes with the second gear is provided on the inner wall of the shaft. The rotation of the cooling roller is used to drive the rotation of the shaft.

[0008] Furthermore, the heat dissipation assembly includes multiple heat-conducting fins arranged circumferentially along the cooling roller, the heat-conducting fins extending into the cooling cavity, one end of the rotating shaft passing through the mounting base, the through end of the rotating shaft being provided with fan blades, the heat dissipation assembly also includes an air guide shroud covering the heat-conducting fins and fan blades, the rotating shaft driving the fan blades to rotate to drive the airflow within the air guide shroud.

[0009] Furthermore, the drive assembly includes a drive shaft located below the cooling roller, a first sprocket on the drive shaft, a second sprocket outside the shaft cylinder, and the first sprocket and the second sprocket are connected by a chain that passes through the air guide shroud.

[0010] Furthermore, the base has a cavity, and the lower side of the scraper and at both ends are provided with mounting rods that penetrate the cavity. The mounting rods located in the cavity are provided with retaining rings, and the mounting rods located in the cavity are fitted with springs that push the retaining rings upward. The lower end of the mounting rods is threaded with a nut that abuts against the bottom wall of the base.

[0011] Furthermore, the side wall of the base is provided with a groove that connects to the cavity along its extension direction. A sliding plate is slidably installed in the cavity. The sliding plate is provided with a protrusion that extends through the groove. The scraper plate is connected to the protrusion through a connecting rod. The sliding plate slides back and forth to drive the scraper plate to scrape the scraper plate.

[0012] Furthermore, the drive assembly also includes a mounting bracket with a rotatable rotating rod. A first bevel gear is mounted on the drive shaft. One end of the rotating rod is equipped with a second bevel gear that meshes with the first bevel gear. The other end of the rotating rod is equipped with a turntable. A sliding column is located at the edge of the turntable. A swing rod is mounted on the mounting bracket with one end hinged to the mounting bracket. The other end of the swing rod is slidably and hinged to a sliding plate. The swing rod is equipped with a sliding groove for the sliding column to extend into. The rotation of the turntable drives the sliding column to press against the sliding groove to realize the swing of the swing rod.

[0013] Furthermore, a slide rail is provided on the sliding plate along its height direction, and a sliding seat is slidably provided on the slide rail, with the other end of the swing rod hinged to the sliding seat.

[0014] The present invention also provides a method for nonwoven fabric coating, which uses the above-mentioned nonwoven fabric production coating device, and specifically includes the following steps: S1. Place the nonwoven fabric roll on the feeding roller and wind one end of the nonwoven fabric onto the winding roller between the cooling roller and the extrusion roller. S2. The coating mechanism operates to coat the nonwoven fabric between the cooling roller and the extrusion roller. At the same time, the rotation of the cooling roller, in conjunction with the rotation of the extrusion roller, enables the film layer to be laminated onto the nonwoven fabric. S3. In step S2, the rotation of the cooling roller drives the piston plate to reciprocate in the same direction within the cooling chamber, causing the coolant to switch flow between the two cooling chambers. At the same time, it drives the fan blades to rotate, causing air to flow within the air guide shroud. This, in conjunction with the heat-conducting fins, cools the coolant within the cooling chamber, enabling it to better cool the film layer laminated on the nonwoven fabric. During this process, the rotation of the cooling roller also drives multiple scraping plates to reciprocate synchronously, removing impurities from the scraping plates and ensuring the effective scraping of the cooling roller surface by the scraping plates.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention uses a flow-pushing component to switch the flow of coolant in the cooling chambers at both ends of the cooling roller, and a heat dissipation component to cool the coolant, thereby ensuring that the flow direction of the coolant in the cooling channel is switched and that the coolant is kept at a lower temperature to cool and solidify the film layer. By switching the flow direction of the coolant, a large temperature difference between the two ends of the cooling roller can be better avoided during continuous operation, so as to achieve a better cooling effect on the nonwoven fabric.

[0016] 2. In this invention, the surface of the cooling roller is scraped by a scraper, and multiple scraper plates move synchronously to scrape the scraper, so as to remove the impurities attached to the scraper plate and ensure the effectiveness of the scraper in scraping the surface of the cooling roller. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the nonwoven fabric coating device in this invention.

[0018] Figure 2 This is a schematic diagram of the cooling mechanism in this invention.

[0019] Figure 3 This is a cross-sectional schematic diagram of the cooling mechanism in this invention.

[0020] Figure 4 This is a schematic diagram of the driving component in this invention.

[0021] Figure 5 This is one of the structural schematic diagrams of the cooling roller in this invention.

[0022] Figure 6 This is the second schematic diagram of the cooling roller in this invention.

[0023] Figure 7 This is one of the structural schematic diagrams of the scraping component in this invention.

[0024] Figure 8 This is the second schematic diagram of the scraping component in this invention.

[0025] Figure 9 This is a partial structural diagram of the driving component in this invention.

[0026] The meanings of the labels in the diagram are as follows: 110. Feeding roller; 120. Rewinding roller; 130. Coating mechanism; 140. Cooling roller; 150. Extrusion roller; 160. Guide roller; 200, Side panel; 201, Motor; 210, First cover; 220, Second cover; 300, Chain; 301, Cooling chamber; 302, Cooling channel; 303, Shaft; 310, Base; 320, Scraper; 330, Piston plate; 340, Mounting seat; 350, Shaft; 360, Drive cylinder; 370, Heat-conducting fin; 380, Fan blade; 390, Drive shaft; 391, First sprocket; 392, First bevel gear; 401. Drive groove; 402. Guide rod; 403. First gear; 404. Groove; 411. Second gear; 501. Step groove; 502. Groove opening; 601. Cavity; 602. Slide groove; 620. Sliding plate; 630. Mounting bracket; 640. Turntable; 650. Swing rod; 701. Mounting rod; 710. Spring; 720. Scraper blade; 721. Connecting rod; 722. Scraper bevel; 730. Collection box; 741. Mounting part; 801, bump; 810, slide rail; 820, sliding seat; 901. Sliding groove. Detailed Implementation

[0027] 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.

[0028] The following is in conjunction with the appendix Figures 1-9 This embodiment will be described in further detail.

[0029] like Figures 1-9As shown, a nonwoven fabric coating device for nonwoven fabric production in this embodiment includes a feeding roller 110 and a take-up roller 120, and a coating mechanism 130 disposed between the feeding roller 110 and the take-up roller 120. A cooling mechanism for cooling the coated nonwoven fabric is provided below the coating mechanism 130. The cooling mechanism includes a rotatable cooling roller 140 and a pressing roller 150. Cooling chambers 301 are provided at both ends of the cooling roller 140. A cooling channel 302 communicating with the cooling chambers 301 is provided in the middle of the cooling roller 140. Cooling liquid is filled in the cooling chambers 301 and the cooling channel 302. A flow-pushing component for pushing the coolant through the cooling channel 302 is provided in the cooling chamber 301. Heat dissipation components for dissipating heat from the coolant in the cooling chamber 301 are provided at both ends of the cooling roller 140. A drive assembly is provided below the cooling roller 140, which is used to drive the flow propulsion assembly and the heat dissipation assembly. A scraping assembly for scraping the surface of the cooling roller 140 is provided below the cooling roller 140. The scraping assembly includes a base 310 and a scraper 320 adjustablely disposed on the base 310. The scraper 320 is used to conform to the surface of the cooling roller 140. The base 310 is also provided with a plurality of scraping plates 720 for scraping the scraper 320. The drive assembly is also used to drive the plurality of scraping plates 720 to move synchronously.

[0030] In actual use, this embodiment, such as Figure 1 As shown, the nonwoven fabric is output from the feeding roller 110, passes between the cooling roller 140 and the extrusion roller 150, and is guided by the guide roller 160 before being wound onto the winding roller 120. The coating mechanism 130 is located directly above the cooling roller 140 and the extrusion roller 150. The coating mechanism 130 is a conventional structure that can melt plastic particles into a liquid state and spray them onto the nonwoven fabric between the cooling roller 140 and the extrusion roller 150. As the cooling roller 140 and the extrusion roller 150 rotate, the molten plastic particles can be bonded to the nonwoven fabric, thereby completing the coating process of the nonwoven fabric. In this embodiment, by setting up the cooling chamber 301, the cooling channel 302, the flow propulsion component and the heat dissipation component, when the coolant flows in the cooling channel 302 during actual use, the cooling roller 140 can cool and lower the film layer laminated on the nonwoven fabric through the heat conduction effect of the cooling roller 140, thereby better curing the film layer. Specifically, the propulsion assembly is used to push the coolant from the cooling chamber 301 at one end of the cooling roller 140 through the cooling channel 302 into the cooling chamber 301 at the other end of the cooling roller 140, and to enable the coolant to flow from the cooling chamber 301 at the other end of the cooling roller 140 through the cooling channel 302 into the cooling chamber 301 at one end of the cooling roller 140, thereby realizing the reciprocating flow switching of the coolant between the two ends of the cooling roller 140. By adopting this cooling method, it is possible to better avoid a large temperature difference between the two ends of the cooling roller 140, which would affect its cooling effect on the film layer. In this embodiment, a heat dissipation component is used to dissipate heat from the coolant in the cooling chamber 301, thereby ensuring that the temperature of the coolant flowing in the cooling channel 302 is low, so that it has a better cooling effect on the film layer on the non-woven fabric. Among them, the driving component is designed to better drive the cooling mechanism to cool and reduce the temperature of the nonwoven fabric after coating. In practical use, during the process of the cooling roller 140 and the extrusion roller 150 rotating to laminate the molten plastic particles onto the nonwoven fabric, the molten plastic particles tend to solidify and adhere to the outer surface of the cooling roller 140 due to its cooling effect. In order to reduce its impact on the film layer laminated onto the nonwoven fabric, in this embodiment, a scraping component is provided to scrape off the impurities adhering to the surface of the cooling roller 140, so as to ensure the effect of the cooling roller 140 and the extrusion roller 150 in coating the nonwoven fabric.

[0031] In this embodiment, the scraper 320 is arranged along the axial direction of the cooling roller 140 below the cooling roller 140, and by adjusting the scraper 320, it is made to fit the surface of the cooling roller 140. At this time, the cooling roller 140 rotates, which enables the scraper 320 to scrape off the impurities attached to its surface. The arrangement of multiple scraper blades 720 allows the drive assembly to move the multiple scraper blades 720 back and forth along the scraper blade 320 during actual use, thereby better removing impurities attached to the scraper blade 320 and avoiding poor scraping effect of the scraper blade 320 on the surface of the cooling roller 140.

[0032] In this embodiment, the propulsion assembly includes a piston plate 330 slidably disposed in the cooling chamber 301, and driving components for driving the piston plate 330 to move are provided at both ends of the cooling roller 140. The driving component includes a mounting base 340, on which a rotatable shaft 350 is provided. The outer side wall of the shaft 350 is provided with a wave-shaped driving groove 401 connected end to end along its circumference. The piston plate 330 is provided with a rotatable driving cylinder 360 that covers the shaft 350. The mounting base 340 is provided with a guide rod 402 that passes through the driving cylinder 360. The inner wall of the driving cylinder 360 is provided with a driving column that slides in the driving groove 401. The rotation of the shaft 350 is used to drive the piston plate 330 to reciprocate.

[0033] In practical use, this embodiment is combined with Figure 5 and Figure 6 As shown, the cooling roller 140 has a shaft sleeve 303 coaxially arranged at both ends. The shaft sleeve 303 is rotatably mounted on one side of the side plate 200 through bearings, thereby realizing the rotatable mounting of the cooling roller 140 between the side plates 200. The side plate 200 is provided with mounting holes corresponding to the shaft sleeve 303, and the driving component is installed in the corresponding shaft sleeve 303. Specifically, in combination Figure 5 As shown, a stepped groove 501 is provided at one end of the mounting hole, and a flange is formed at one end of the mounting base 340. The flange is fixedly installed in the stepped groove 501 by bolts so that the mounting base 340 can be fixedly installed on the corresponding side plate 200. Among them, the outer side wall of the drive cylinder 360 is provided with a guide hole along its axial direction for the corresponding guide rod 402 to pass through, so as to restrict the drive cylinder 360 and prevent it from rotating circumferentially, while realizing its sliding installation in the shaft cylinder 303; The arrangement of the drive groove 401, drive cylinder 360, and drive column allows the rotating shaft 350 to rotate, causing the side wall of the drive groove 401 to press against the drive column. Since the drive cylinder 360 cannot rotate circumferentially, the drive column can slide along the drive groove 401, enabling the drive cylinder 360 to reciprocate within the cooling chamber 301. This, in turn, drives the piston plate 330 to reciprocate within the cooling chamber 301. The outer wall of the piston plate 330 slides and seals against the side wall of the cooling chamber 301, allowing the reciprocating movement of the piston plate 330 to drive the flow of coolant. In actual use, the position of the piston plates 330 at both ends of the cooling roller 140 relative to the corresponding drive groove 401 is designed so that when the two rotating shafts 350 rotate synchronously, the two piston plates 330 at both ends of the cooling roller 140 move in the same direction to realize the flow switching of the coolant between the two cooling chambers 301. In actual use, in order to facilitate the connection between the drive cylinder 360 and the piston plate 330, the piston plate 330 is provided with a screw that passes through the corresponding drive cylinder 360. A limit nut is threaded on the screw, thereby making it easier to assemble and disassemble the two. In order to avoid the screw affecting the reciprocating movement of the drive cylinder 360 on the rotating shaft 350, a groove 404 is provided at the end of the rotating shaft 350 inside the drive cylinder 360 for the screw and the limit nut to extend into.

[0034] In this embodiment, the cooling roller 140 has a shaft cylinder 303 at both ends that connects to the corresponding cooling chamber 301 and is used to install the driving component. The rotating shaft 350 is provided with a first gear 403. The mounting base 340 is provided with a second gear 411 that is rotatable and meshes with the first gear 403 along its circumference. The inner wall of the shaft cylinder 303 is provided with a toothed ring that meshes with the second gear 411. The rotation of the cooling roller 140 is used to drive the rotating shaft 350 to rotate.

[0035] In this embodiment, combined with Figure 4 As shown, the first gear 403 is fixedly mounted on the rotating shaft 350, and the second gear 411 is rotatably mounted on the end face of the mounting base 340 facing the cooling chamber 301 via the shaft. The gear ring is fixedly mounted on the inner wall of the corresponding shaft cylinder 303. Thus, through the meshing of the first gear 403, the second gear 411 and the gear ring, a planetary gear is formed, so that the rotation of the cooling roller 140 can drive the rotating shafts 350 at both ends to rotate synchronously. That is, when the cooling roller 140 rotates to perform the coating operation, it can drive the piston plates 330 at both ends to move synchronously, thereby realizing the flow switching of the coolant.

[0036] In this embodiment, the heat dissipation assembly includes a plurality of heat-conducting plates 370 arranged circumferentially along the cooling roller 140. The heat-conducting plates 370 extend into the cooling cavity 301. One end of the rotating shaft 350 passes through the mounting base 340. The through end of the rotating shaft 350 is provided with a fan blade 380. The heat dissipation assembly also includes an air guide shroud covering the heat-conducting plates 370 and the fan blade 380. The rotating shaft 350 drives the fan blade 380 to rotate so as to drive the airflow in the air guide shroud.

[0037] In actual use, this embodiment, such as Figure 2 As shown, the air guide shroud includes a first shroud 210 and a second shroud 220. The first shroud 210 covers the heat-conducting plate 370 and is mounted on the inner wall of the side plate 200. The second shroud 220 covers the fan blade 380 and is mounted on the outer wall of the side plate 200. Specifically, in conjunction with... Figure 5As shown, the side plate 200 is provided with a slot 502 located outside the mounting hole so that the first cover 210 and the second cover 220 are connected. Thus, the end of the cooling roller 140 forms an air duct covering the heat conduction plate 370. Thus, when the cooling roller 140 drives the rotating shafts 350 at both ends to rotate synchronously, it can drive the fan blades 380 to rotate, thereby blowing the air in the air guide cover out to generate negative pressure inside, so that the outside air can enter the air guide cover and realize the air flow. Among them, the heat-conducting sheet 370 is made of a material with good thermal conductivity, which can conduct heat out of the coolant in the cooling chamber 301. Combined with the air flow in the air guide shroud, it can better achieve the cooling of the coolant, so as to ensure the cooling effect of the film layer when the coolant flow switches.

[0038] The cooling roller 140 is located on the outer surface of the air guide shroud to form a cooling working area. The extrusion roller 150 is used to cooperate with the cooling working area. In actual use, the extrusion roller 150 is rotatably mounted on a bracket 151, and the bracket 151 is fixedly mounted between the side plates 200, thereby realizing the installation of the extrusion roller 150.

[0039] In actual use, in order to better drive the cooling roller 140 to rotate, the driving assembly includes a driving shaft 390 located below the cooling roller 140, a first sprocket 391 on the driving shaft 390, a second sprocket outside the shaft cylinder 303, and the first sprocket 391 and the second sprocket are connected by a chain 300 that passes through the air guide shroud.

[0040] In this embodiment, a motor 201 is provided on the side plate 200. The motor 201 drives the drive shaft 390 to rotate. Through the arrangement of the first sprocket 391, the second sprocket and the chain 300, the motor 201 can better realize the rotation of the cooling roller 140.

[0041] Combination Figure 7 As shown, in this embodiment, the base 310 has a cavity 601, and the scraper 320 has an installation rod 701 that passes through the cavity 601 at its lower side and at both ends. The installation rod 701 located in the cavity 601 has a retaining ring, and the installation rod 701 located in the cavity 601 has a spring 710 that pushes the retaining ring to move upward. The lower end of the installation rod 701 is threaded with a nut that abuts against the bottom wall of the base 310.

[0042] In actual use, the upper side of the base 310 and at both ends are provided with mounting parts 741. The mounting parts 741 are adapted to the outer side wall of the corresponding first cover 210. The mounting parts 741 are fixedly installed on the first cover 210 by bolts to realize the fixed installation of the base 310 directly below the cooling roller 140. The base 310 is arranged along the axial direction of the cooling roller 140 so that the scraper 320 on it can fit against the outer surface of the cooling working area of ​​the cooling roller 140. In this embodiment, the above-described structure enables the upper side of the scraper 320 to better fit against the lower side of the cooling roller 140 by tightening the nut and pushing the retaining ring upward with the spring 710 during actual use. This allows the scraper 320 to scrape off impurities adhering to the surface of the cooling roller 140 when it rotates.

[0043] Specifically, in order to collect the scraped impurities, in this embodiment, a detachable collection box 730 is provided on the base 310.

[0044] Combination Figures 7-8 As shown, in this embodiment, the side wall of the base 310 is provided with a groove 602 that communicates with the cavity 601 along its extension direction. A sliding plate 620 is slidably provided in the cavity 601. A protrusion 801 that extends through the groove 602 is provided on the sliding plate 620. The scraping plate 720 is connected to the protrusion 801 through a connecting rod 721. The sliding plate 620 slides back and forth to drive the scraping plate 720 to scrape the scraper 320.

[0045] In this embodiment, the scraper 720 can be fixedly connected to the sliding plate 620 by the setting of the sliding groove 602, the protrusion 801 and the connecting rod 721. Thus, the sliding plate 620 slides in the cavity 601, so that multiple scraper plates 720 can move synchronously back and forth to scrape the scraper 320. Among them, combined Figure 7 As shown, the scraper plate 720 is disposed in close contact with the side of the scraper plate 320, and the upper end of the scraper plate 720 is flush with the upper end surface of the scraper plate 320. The two sides of the scraper plate 720 form opposing and inclined scraper surfaces 722. Thus, during the reciprocating movement of the scraper plate 720, the scraper surfaces 722 can scrape off the impurities attached to the scraper plate 320 and make the impurities roll off along the scraper surfaces 722 to avoid them adhering to the scraper plate 720 and affecting its scraping effect on the scraper plate 320.

[0046] Combination Figures 6-9As shown, in this embodiment, the drive assembly further includes a mounting frame 630, on which a rotatable rotating rod is provided. A first bevel gear 392 is provided on the drive shaft 390. One end of the rotating rod is provided with a second bevel gear that meshes with the first bevel gear 392. The other end of the rotating rod is provided with a turntable 640. A sliding column 641 is provided at the edge of the turntable 640. A swing rod 650 is provided on the mounting frame 630, with one end hinged to the mounting frame 630. The other end of the swing rod 650 is slidably and hinged to the sliding plate 620. The swing rod 650 is provided with a sliding groove 901 for the sliding column 641 to extend into. The rotation of the turntable 640 drives the sliding column 641 to press against the sliding groove 901 to realize the swing of the swing rod 650.

[0047] In this embodiment, as Figure 7 As shown, a slide rail 810 is provided on the sliding plate 620 along its height direction, and a sliding seat 820 is slidably provided on the slide rail 810. The other end of the swing rod 650 is hinged to the sliding seat 820.

[0048] The slide rail 810 is arranged along the width direction of the slide plate 620. The slide seat 820 slides on the slide rail 810 and is hinged to the upper end of the swing rod 650 through the slide seat 820, which better realizes the sliding installation of the upper end of the swing rod 650 on the slide plate 620. The arrangement of the first bevel gear 392 and the second bevel gear enables the drive shaft 390 to rotate, thereby driving the rotating rod to rotate, which in turn drives the turntable 640 to rotate. This is achieved by combining... Figure 9 As shown, since the lower end of the swing rod 650 is hinged to the mounting bracket 630, the sliding groove 901 and the sliding column 641 are configured to rotate the turntable 640 so that the sliding column 641 can press the side wall of the sliding groove 901, thereby realizing the swing rod 650 swinging around its lower end. Since the upper end of the swing rod 650 is slidably mounted on the sliding plate 620 along the width direction of the sliding plate 620, and the sliding plate 620 is slidably mounted in the cavity 601, the reciprocating swing of the swing rod 650 can drive the sliding plate 620 to reciprocate within the cavity 601, thereby realizing the reciprocating scraping of the scraper 320 by the multiple scraping plates 720.

[0049] In actual use, the mounting bracket 630 is installed on the lower side of the bracket 151, thereby better realizing the installation of the mounting bracket 630 below the cooling roller 140.

[0050] The present invention also provides a method for nonwoven fabric coating, which uses the above-mentioned nonwoven fabric coating device for nonwoven fabric production, and specifically includes the following steps: S1. Place the nonwoven fabric roll on the feeding roller 110, and let one end of the nonwoven fabric pass between the cooling roller 140 and the extrusion roller 150, and be guided by the guide roller 160 before being wound onto the winding roller 120. S2. The coating mechanism 130 operates to coat the nonwoven fabric between the cooling roller 140 and the extrusion roller 150. At the same time, the motor 201 is started to drive the cooling roller 140 to rotate. The rotation of the extrusion roller 150 can make the film layer laminated on the nonwoven fabric. S3. In step S2, the motor 201 drives the piston plate 330 to reciprocate in the same direction within the cooling chamber 301, causing the coolant to switch flow between the two cooling chambers 301. At the same time, it drives the fan blade 380 to rotate, causing air to flow within the air guide shroud. This, in conjunction with the heat-conducting plate 370, cools the coolant within the cooling chamber 301, enabling it to better cool the film layer laminated on the nonwoven fabric. During this process, the motor 201 also drives multiple scraping plates 720 to reciprocate synchronously, removing impurities from the scraping plates 320, thereby ensuring the scraping effect of the scraping plates 320 on the surface of the cooling roller 140.

[0051] 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 nonwoven fabric coating device for nonwoven fabric production, comprising a feeding roller (110) and a take-up roller (120), and a coating mechanism (130) disposed between the feeding roller (110) and the take-up roller (120), characterized in that: A cooling mechanism for cooling the nonwoven fabric after coating is provided below the coating mechanism (130). The cooling mechanism includes a rotatable cooling roller (140) and a squeezing roller (150). Cooling chambers (301) are provided at both ends of the cooling roller (140). A cooling channel (302) communicating with the cooling chamber (301) is provided in the middle of the cooling roller (140). Cooling liquid is contained in the cooling chamber (301) and the cooling channel (302). A flow-pushing component for pushing the cool liquid through the cooling channel (302) is provided in the cooling chamber (301). Heat dissipation components for dissipating heat from the cool liquid in the cooling chamber (301) are provided at both ends of the cooling roller (140). A drive assembly is provided below the cooling roller (140), which is used to drive the flow propulsion assembly and the heat dissipation assembly to work; A scraping assembly for scraping the surface of the cooling roller (140) is provided below the cooling roller (140). The scraping assembly includes a base (310) and a scraper (320) adjustable on the base (310). The scraper (320) is used to adhere to the surface of the cooling roller (140). The base (310) is also provided with a plurality of scraping plates (720) for scraping the scraper (320). The drive assembly is also used to drive the plurality of scraping plates (720) to move synchronously.

2. The nonwoven fabric coating device for nonwoven fabric production according to claim 1, characterized in that: The propulsion assembly includes a piston plate (330) that is slidably disposed in the cooling chamber (301), and driving components for driving the piston plate (330) to move are provided at both ends of the cooling roller (140); The driving component includes a mounting base (340), on which a rotatable shaft (350) is provided. The outer side wall of the shaft (350) is provided with a wave-shaped driving groove (401) connected end to end along its circumference. The piston plate (330) is provided with a rotatable driving cylinder (360) that covers the shaft (350). The mounting base (340) is provided with a guide rod (402) that passes through the driving cylinder (360). The inner wall of the driving cylinder (360) is provided with a driving column that slides in the driving groove (401). The shaft (350) rotates to drive the piston plate (330) to reciprocate.

3. The nonwoven fabric coating device for nonwoven fabric production according to claim 2, characterized in that: The cooling roller (140) has a shaft (303) at both ends that connects to the corresponding cooling chamber (301) and is used to install the drive component. The rotating shaft (350) is provided with a first gear (403). The mounting base (340) is provided with a second gear (411) that is rotatable and meshes with the first gear (403) along its circumference. The inner wall of the shaft (303) is provided with a toothed ring that meshes with the second gear (411). The rotation of the cooling roller (140) is used to drive the rotating shaft (350) to rotate.

4. The nonwoven fabric coating device for nonwoven fabric production according to claim 3, characterized in that: The heat dissipation assembly includes multiple heat-conducting fins (370) arranged circumferentially along the cooling roller (140), the heat-conducting fins (370) extending into the cooling chamber (301), one end of the rotating shaft (350) passing through the mounting base (340), and the through end of the rotating shaft (350) is provided with a fan blade (380). The heat dissipation assembly also includes an air guide cover covering the heat-conducting fins (370) and the fan blade (380), and the rotating shaft (350) drives the fan blade (380) to rotate to drive the airflow inside the air guide cover.

5. A nonwoven fabric coating device for nonwoven fabric production according to claim 4, characterized in that: The drive assembly includes a drive shaft (390) located below the cooling roller (140), a first sprocket (391) on the drive shaft (390), a second sprocket outside the shaft cylinder (303), and the first sprocket (391) and the second sprocket are connected by a chain (300) that passes through the air guide shroud.

6. The nonwoven fabric coating device for nonwoven fabric production according to claim 4, characterized in that: The base (310) has a cavity (601). The scraper (320) has an installation rod (701) that passes through the cavity (601) at both ends. The installation rod (701) in the cavity (601) has a retaining ring. The installation rod (701) in the cavity (601) has a spring (710) that pushes the retaining ring to move upward. The lower end of the installation rod (701) is threaded with a nut that abuts against the bottom wall of the base (310).

7. A nonwoven fabric coating device for nonwoven fabric production according to claim 6, characterized in that: The base (310) has a groove (602) on its side wall that connects to the cavity (601) along its extension direction. A sliding plate (620) is slidably provided in the cavity (601). A protrusion (801) protruding through the groove (602) is provided on the sliding plate (620). The scraper plate (720) is connected to the protrusion (801) through the connecting rod (721). The sliding plate (620) slides back and forth to drive the scraper plate (720) to scrape the scraper plate (320).

8. A nonwoven fabric coating device for nonwoven fabric production according to claim 7, characterized in that: The drive assembly also includes a mounting bracket (630), on which a rotatable rotating rod is provided. A first bevel gear (392) is provided on the drive shaft (390). One end of the rotating rod is provided with a second bevel gear that meshes with the first bevel gear (392). The other end of the rotating rod is provided with a turntable (640). A sliding column (641) is provided at the edge of the turntable (640). A swing rod (650) is provided on the mounting bracket (630), with one end hinged to the mounting bracket (630). The other end of the swing rod (650) is slidably and hinged to a sliding plate (620). The swing rod (650) is provided with a sliding groove (901) for the sliding column (641) to extend into. The rotation of the turntable (640) is used to drive the sliding column (641) to squeeze the sliding groove (901) to realize the swing of the swing rod (650).

9. A nonwoven fabric coating device for nonwoven fabric production according to claim 8, characterized in that: A slide rail (810) is provided on the sliding plate (620) along its height direction, and a sliding seat (820) is slidably provided on the slide rail (810). The other end of the swing rod (650) is hinged to the sliding seat (820).

10. A method for coating nonwoven fabrics, characterized in that: It employs a nonwoven fabric production coating apparatus as described in any one of claims 1-9, specifically comprising the following steps: S1. Place the nonwoven fabric roll on the feeding roller (110) and wind one end of the nonwoven fabric onto the winding roller (120) between the cooling roller (140) and the extrusion roller (150); S2, The coating mechanism (130) operates to coat the nonwoven fabric between the cooling roller (140) and the extrusion roller (150). At the same time, the film layer can be laminated onto the nonwoven fabric by rotating the cooling roller (140) in conjunction with the rotation of the extrusion roller (150). S3. In step S2, the rotation of the cooling roller (140) drives the piston plate (330) to move back and forth in the same direction in the cooling chamber (301), so that the flow of coolant between the two cooling chambers (301) is switched. At the same time, the fan blade (380) is driven to rotate so that the air in the air guide shroud flows. With the help of the heat-conducting plate (370), the coolant in the cooling chamber (301) is cooled down so that it can better cool the film layer laminated on the non-woven fabric. During this process, the rotation of the cooling roller (140) also drives multiple scraping plates (720) to move back and forth synchronously to remove impurities on the scraping plates (320), thereby ensuring the scraping effect of the scraping plates (320) on the surface of the cooling roller (140).

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