Method and apparatus for producing high-strength nonwoven fabric

Abstract

The application discloses a high-strength non-woven fabric production method and equipment, and belongs to the technical field of non-woven fabric production. The high-strength non-woven fabric production equipment comprises a rack, two raw material rollers rotatably arranged on the rack, first composite material and second composite material wound on the two raw material rollers respectively, a fiber spray gun fixedly arranged on the rack, two extrusion rollers rotatably arranged on the rack, a material collecting roller rotatably arranged on the rack, two blocking devices oppositely arranged on the two sides of the first composite material, a bottom plate fixedly arranged on the rack, two blocking boxes movably arranged on the bottom plate, a driving assembly for driving the two blocking boxes to move and exchange positions, a storage box fixedly arranged on the rack, and a heating cover fixedly arranged on the storage box and provided with a plurality of heating pipes arranged in the heating cover. The application has the beneficial effect of providing a high-strength non-woven fabric production method and equipment capable of reducing the raw material waste rate.

Description

Technical Field

[0001] This application relates to the field of nonwoven fabric production technology, and more specifically, to a method and equipment for producing high-strength nonwoven fabric. Background Technology

[0002] Nonwoven fabric is a textile made from textile fibers through bonding, fusion, or other chemical and mechanical processes. Industrial production of nonwoven fabric began in the 1940s. Due to its high output, low cost, and wide range of applications, it has developed rapidly and is widely used in clothing, medical, and decorative fields. However, nonwoven fabric has relatively low strength, making it prone to wear and tear during use, resulting in a shorter service life. Generally, two nonwoven fabrics with different properties are combined to form composite nonwoven fabrics to improve their service life.

[0003] In the existing production process of composite nonwoven fabrics, hot melt lamination is generally used, which involves spraying hot melt adhesive onto nonwoven fabric raw materials and bonding them together to form a composite nonwoven fabric.

[0004] For example, a high-strength nonwoven fabric production equipment with patent number (CN113619250B) is characterized by: including a machine body and a composite device disposed within the machine body; conveyor roller sets are provided at the upper part of the machine body's feeding end, the lower part of the machine body's feeding end, and the middle part of the machine body's discharging end; two conveyor roller sets located at the machine body's feeding end are respectively used to feed the ends of two pieces of nonwoven fabric into the machine body; the conveying paths of the two pieces of nonwoven fabric are respectively located above and below the composite device, and when the ends of the two pieces of nonwoven fabric move... When the device moves above and below the laminating unit, it adsorbs the ends of the two nonwoven fabrics and brings them together. The machine body is equipped with a drive unit that moves the laminating device towards the machine body's discharge end. A conveyor roller assembly located at the machine body's discharge end is used to deliver the two bonded nonwoven fabrics out of the machine body. The laminating device sprays an adhesive layer onto the bonding surfaces of the two nonwoven fabrics. The laminating device includes a laminating tube horizontally disposed inside the machine body, with several through holes on its outer circumference. The through holes are located at the upper and lower parts of the composite pipe; the composite device also includes an exhaust fan, one end of the composite pipe is connected to the exhaust fan; the composite device also includes a container for holding hot melt adhesive and a delivery pump for conveying hot melt adhesive, the input end of the delivery pump is connected to the container, and one end of the composite pipe is connected to the output end of the delivery pump; both ends of the composite pipe are respectively provided with openings, the two openings are respectively connected to the output end of the delivery pump and the exhaust fan; a connecting shaft is rotatably connected between the two inner end walls of the composite pipe facing each other, and baffles are provided at both ends of the connecting shaft, the two baffles are respectively placed on both sides of the connecting shaft, the baffles are used to open and close the openings, the composite pipe is provided with a control device, the control device is used to control the rotation of one of the baffles; when one of the baffles closes the opening in the composite pipe connected to the delivery pump, the other baffle opens the opening in the composite pipe connected to the exhaust fan; when one of the baffles opens the opening in the composite pipe connected to the delivery pump, the other baffle closes the opening in the composite pipe connected to the exhaust fan.

[0005] The aforementioned equipment is used to laminate two pieces of nonwoven fabric to produce a high-strength composite nonwoven fabric. In this equipment, hot melt adhesive is sprayed onto the nonwoven fabric through several through-holes in the laminating tube. However, these through-holes cannot be aligned precisely with the edges of the nonwoven fabric, requiring some fabric to be left at the edges of the two pieces of nonwoven fabric to be laminated for later cutting. Therefore, there is a need to design a production method and equipment for high-strength nonwoven fabric that can accurately spray hot melt adhesive onto the edges of the nonwoven fabric materials to be laminated. Using this equipment and method can reduce the waste rate of raw materials during the production of high-strength nonwoven fabric and save production costs. Summary of the Invention

[0006] The summary section of this application is intended to provide a brief overview of the concepts, which will be described in detail in the detailed description section below. This summary section is not intended to identify key or essential features of the claimed technical solutions, nor is it intended to limit the scope of the claimed technical solutions.

[0007] To address the technical problems mentioned in the background section, some embodiments of this application provide a high-strength nonwoven fabric production device, including:

[0008] frame;

[0009] Two raw material rollers are rotatably mounted on the frame, and the first composite material and the second composite material are respectively wound on the two raw material rollers;

[0010] The fiber spray gun is fixedly mounted on the frame and positioned above the first composite material;

[0011] Two extrusion rollers are rotatably mounted on the frame, with a gap between the two extrusion rollers for the first and second composite materials to pass through;

[0012] The take-up roller is rotatably mounted on the frame to take up the laminated fabric;

[0013] Its features are:

[0014] High-strength nonwoven fabric production equipment also includes:

[0015] Two partition devices are positioned opposite each other on both sides of the first composite material;

[0016] The barrier device includes:

[0017] The base plate is fixedly mounted on the frame;

[0018] Two partition boxes are movably mounted on the base plate, with the two partition boxes respectively located at both ends of the base plate;

[0019] A drive component to move and exchange positions between the two partition boxes;

[0020] The storage tank is fixedly mounted on the frame and located on the side of the bottom plate away from the first composite material, with a liquid inlet formed on the top surface;

[0021] A heating cover is fixedly installed on the storage box, and several heating tubes are installed inside the heating cover.

[0022] Specifically, when the partition box moves to the end of the base plate close to the first composite material, the partition box is located between the fiber spray gun and the first composite material; when the partition box moves to the end of the base plate away from the first composite material, the partition box enters the heating cover so that the hot melt adhesive in the partition box melts and flows into the storage tank.

[0023] During operation, the fiber spray gun sprays hot melt adhesive onto the first composite material. Two extrusion rollers then press and bond the second composite material with the first composite material to form a composite nonwoven fabric. A baffle device is installed, with baffle boxes positioned between the first composite material and the fiber spray gun. By aligning one baffle box closer to the first composite material with its edge, the hot melt adhesive is accurately sprayed onto the first composite material. The baffle boxes also block excess hot melt adhesive from the edges of the fiber spray gun. The drive assembly swaps the positions of the two baffle boxes, with the baffle box furthest from the first composite material entering the heating housing. The heating housing melts the hot melt adhesive in the baffle box, allowing it to flow into a storage tank, preventing excessive accumulation of hot melt adhesive and ensuring effective baffle separation.

[0024] Furthermore, the driving components include:

[0025] The first guide plate is fixedly mounted on the base plate;

[0026] The first movable plate is movably mounted on the first guide plate along the width direction of the frame;

[0027] The first mounting plate is fixedly mounted on the first movable plate;

[0028] The second guide plate is fixedly mounted on the base plate and is parallel to the first guide plate;

[0029] The second movable plate is movably mounted on the second guide plate along the width direction of the frame;

[0030] The second mounting plate is movably mounted on the second movable plate along the height direction of the frame;

[0031] The two partition boxes are respectively mounted on the first mounting plate and the second mounting plate.

[0032] Furthermore, two synchronous pulleys are rotatably mounted on the second guide plate, and a synchronous belt is fitted on the two synchronous pulleys. The synchronous belt is fixedly connected to the first moving plate and the second moving plate.

[0033] A drive motor is fixedly mounted on the first guide plate, and the output shaft of the drive motor is fixedly connected to any synchronous pulley.

[0034] Furthermore, a drive cylinder is fixedly mounted on the second movable plate, and the piston rod of the drive cylinder is fixedly connected to the second mounting plate.

[0035] Furthermore, the two partition boxes include a first partition box and a second partition box;

[0036] The first partition box and the second partition box are respectively rotatably mounted on the first mounting plate and the second mounting plate;

[0037] A first hinge block and a second hinge block are fixedly installed on the first partition box, and the first hinge block is rotatably mounted on the first mounting plate.

[0038] The first hinge rod is rotatably connected to the second hinge block. The end of the first hinge rod away from the second hinge block is rotatably connected to the second hinge rod. The end of the second hinge rod away from the first hinge rod is rotatably mounted on the first mounting plate.

[0039] A flip motor is fixedly mounted on the first mounting plate. The output shaft of the flip motor is fixedly connected to the end of the second hinge rod away from the first hinge rod to drive the second hinge rod to rotate.

[0040] The connection method between the second partition box and the second mounting plate is the same as the connection method between the first partition box and the first mounting plate.

[0041] Furthermore, the bottom part of the partition box is concave to form an arc-shaped guide surface.

[0042] Furthermore, a hot melt adhesive tank is fixedly installed on the frame, and a first delivery pump and a second delivery pump are fixedly installed on the hot melt adhesive tank;

[0043] The input end of the first delivery pump is connected to the hot melt glue tank, and the output end of the first delivery pump is connected to the fiber spray gun through the glue delivery hose.

[0044] The output end of the second delivery pump is connected to the hot melt adhesive tank, and the input end of the second delivery pump is connected to the storage tank through a recycling hose.

[0045] Furthermore, guide rollers are rotatably mounted on the frame to change the conveying direction of the second composite material.

[0046] A method for producing high-strength nonwoven fabric, characterized by the following steps:

[0047] Step 1: Raw material preparation. Prepare two non-woven fabric raw materials with different properties as the first composite material and the second composite material. Place them on two raw material rollers respectively. Pull the first composite material and the second composite material out of the raw material rollers and through the gap between the two extrusion rollers. Fix the first composite material on the take-up roller.

[0048] Step 2: Baffle spraying. During the first composite material conveying process, the fiber spray gun sprays hot melt adhesive onto the first composite material; the two baffle boxes on the baffle device move alternately below the fiber spray gun under the drive of the drive component to block the hot melt adhesive outside the edge of the first composite material in the baffle box; when one baffle box is blocking the hot melt adhesive, the other baffle box moves into the heating shell, and the heating shell melts the hot melt adhesive in the baffle box and flows into the storage tank;

[0049] Step 3: Extrusion bonding. The second composite material and the first composite material after being sprayed with hot melt adhesive are extruded and bonded through the gap of the extrusion rollers.

[0050] Step 4: Take-up. The composite nonwoven fabric is rolled up onto the take-up roller.

[0051] By adopting the above methods, the waste rate of raw materials in the production process of composite nonwoven fabrics can be reduced, thus saving production costs.

[0052] Furthermore, step 2 also includes: recycling, in which the hot melt adhesive in the storage tank is recycled back into the hot melt adhesive tank via a second delivery pump.

[0053] The beneficial effects of this application are as follows:

[0054] 1. By setting up a baffle device, the baffle box blocks the hot melt adhesive at the edge of the fiber spray gun, allowing the hot melt adhesive to be accurately sprayed onto the edge of the first composite material, reducing the waste rate of the first composite material; a heating tube is installed inside the heating cover, and the hot melt adhesive in the baffle box is heated by the heating tube and melted into the storage tank, avoiding excessive accumulation of hot melt adhesive on the baffle box and affecting the baffle box's baffle effect; 2. By using a second delivery pump, the hot melt adhesive in the storage tank is recycled to the hot melt adhesive tank, reducing the waste of hot melt adhesive. Attached Figure Description

[0055] In the attached diagram:

[0056] Figure 1 This is an overall schematic diagram of Embodiment 1 of this application. Figure 1 ;

[0057] Figure 2 This is an overall schematic diagram of Embodiment 1 of this application. Figure 2 ;

[0058] Figure 3 This is a partial structural schematic diagram of Embodiment 1 of this application, mainly showing the positional relationship between the partition box and the first composite material;

[0059] Figure 4 This is a partial structural schematic diagram of Embodiment 1 of this application, mainly showing the structure of the partition device;

[0060] Figure 5 yes Figure 4 Enlarged view of part A;

[0061] Figure 6 This is a partial exploded view of the structural installation of Embodiment 1 of this application, mainly showing the connection structure between the first guide plate, the first movable plate, the first mounting plate, the second guide plate, the second movable plate, and the second mounting plate;

[0062] Figure 7 This is a partial structural schematic diagram of Embodiment 1 of this application, mainly showing the connection structure of the first guide part, the first engaging plate, the engaging groove, the second guide part, the guide groove, and the second engaging plate;

[0063] Figure 8 This is a partial structural schematic diagram of Embodiment 1 of this application, mainly showing the connection structure between the first moving plate, the second moving plate and the synchronous belt;

[0064] Figure 9 This is a partial structural schematic diagram of Embodiment 1 of this application, mainly showing the position of the heating tube. Detailed Implementation

[0065] Embodiments of this disclosure will now be described in more detail with reference to the accompanying drawings. While some embodiments of this disclosure are shown in the drawings, it should be understood that this disclosure can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this disclosure. It should be understood that the accompanying drawings and embodiments of this disclosure are for illustrative purposes only and are not intended to limit the scope of protection of this disclosure.

[0066] It should also be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings. Unless otherwise specified, the embodiments and features described in this disclosure can be combined with each other.

[0067] It should be noted that the concepts of "first" and "second" mentioned in this disclosure are used only to distinguish different devices, modules or units, and are not used to limit the order of functions performed by these devices, modules or units or their interdependencies.

[0068] It should be noted that the terms "a" and "a plurality of" used in this disclosure are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0069] This disclosure will now be described in detail with reference to the accompanying drawings and embodiments.

[0070] Example 1:

[0071] A production equipment for producing high-strength nonwoven fabric includes: a frame 1, two raw material rollers 101, a fiber spray gun 102, two extrusion rollers 103, and a take-up roller 104.

[0072] Specifically, four support legs 105 are fixedly installed on the bottom surface of the frame 1 near the four corners to support the frame 1; two raw material rollers 101 are rotatably mounted on the frame 1, with a first composite material 106 and a second composite material 107 wound on the two raw material rollers 101 respectively, and the second composite material 107 is located above the first composite material 106; two extrusion rollers 103 are rotatably mounted on the frame 1, with a gap between the two extrusion rollers 103 for the first composite material 106 and the second composite material 107 to pass through; a guide roller is rotatably mounted on the frame 1 above the extrusion rollers 103 and on the side of the extrusion rollers 103 close to the raw material rollers 101; a take-up roller 104 is rotatably mounted on the frame 1, and the take-up roller 104 is located on the side of the extrusion rollers 103 away from the raw material rollers 101; a fiber spray gun 102 is fixedly mounted on the frame 1 and located above the first composite material 106;

[0073] The first composite material 106 is pulled out of the raw material roller 101 and passes through the gap between the two extrusion rollers 103 before being fixedly mounted on the take-up roller 104. The second composite material 107 is pulled out of the raw material roller 101 and passes over the guide roller before passing through the gap between the two extrusion rollers 103. A hot melt adhesive tank 109 is fixedly mounted on the frame 1. A first conveying pump 110 is fixedly mounted on the hot melt adhesive tank 109. The input end of the first conveying pump 110 is connected to the hot melt adhesive tank 109, and the output end of the first conveying pump 110 is connected to the fiber spray gun 102 through the glue delivery hose 111. When the first composite material 106 passes under the fiber spray gun 102, the fiber spray gun 102 can spray hot melt adhesive onto the first composite material 106. When the first composite material 106, after being sprayed with hot melt adhesive, passes through the extrusion roller 103, the extrusion roller 103 extrudes and bonds the second composite material 107 together with the first composite material 106 to complete the composite. The take-up roller 104 winds the composite nonwoven fabric into a roll for easy storage.

[0074] The production equipment for the above-mentioned high-strength nonwoven fabric production method also includes two baffle devices 2, which are arranged opposite to each other on the frame 1 and located on both sides of the first composite material 106. The baffle devices 2 can block the hot melt adhesive sprayed from the fiber spray gun 102, so that the hot melt adhesive can be accurately sprayed on the area of ​​the first composite material 106 that needs to be laminated, avoiding the waste of raw materials of the first composite material 106 due to inaccurate hot melt adhesive spraying, reducing the waste rate in the composite nonwoven fabric production process, thereby reducing the production cost of the composite nonwoven fabric.

[0075] Specifically, the partition device 2 includes: a base plate 201, two partition boxes 202, a drive assembly, a storage tank 204, and a heating cover 205; more specifically, a mounting bracket 206 is fixedly installed on the frame 1, the base plate 201 is fixedly installed on the mounting bracket 206, the two partition boxes 202 are respectively installed at both ends of the base plate 201 along the width direction of the frame 1, and the partition boxes 202 are movably installed on the base plate 201; the drive assembly is disposed on the base plate 201 to drive the two partition boxes 202 to move and exchange positions; the storage tank 204 is fixedly installed on the mounting bracket 206, the storage tank 204 is installed on the side of the base plate 201 away from the first composite material 106, and a liquid inlet 207 is formed on the top surface of the storage tank 204; the heating cover 205 is fixedly disposed on the top surface of the storage tank 204, and a plurality of heating tubes 208 are installed inside the heating cover 205;

[0076] The two partition boxes 202 include a first partition box 209 and a second partition box 210. Initially, the first partition box 209 is located on the base plate 201 near the first composite material 106, and the second partition box 210 is located on the base plate 201 away from the first composite material 106. The first partition box 209 is positioned between the first composite material 106 and the fiber spray gun 102, with its edge aligned with the edge of the first composite material 106. This allows the first partition box 209 to spray hot melt adhesive onto the first composite material 106 when the fiber spray gun 102 sprays the first... The baffle box 209 can block the hot melt adhesive outside the edge of the first composite material 106, so that the hot melt adhesive can be accurately sprayed on the edge of the first composite material 106; the second baffle box 210 is set on the bottom plate 201 near one end of the heating cover 205, and the heating cover 205 can melt the hot melt adhesive in the second baffle box 210 and flow into the storage tank 204; the drive component can drive the first baffle box 209 and the second baffle box 210 to move and exchange positions, so that the first baffle box 209 and the second baffle box 210 alternately block the hot melt adhesive and heat and melt it.

[0077] The drive assembly includes: a first guide plate 211, a first movable plate 212, a first mounting plate 213, a second guide plate 214, a second movable plate 215, and a second mounting plate 216. Specifically, two first guide plates 211 are fixedly mounted on both sides of the base plate 201, and the first movable plate 212 is movably mounted on the first guide plate 211 along the width direction of the frame 1. Specifically, the surface portion of the first guide plate 211 protrudes to form a first guide portion 217 with a convex cross-section, and the extending direction of the first guide portion 217 is parallel to that of the frame 1. The width directions are the same. A first engaging plate 218 is fixedly installed on the first movable plate 212. The surface portion of the first engaging plate 218 is recessed to form an engaging groove 219 corresponding to the cross section of the first guide portion 217. The first engaging plate 218 is movably installed on the first guide portion 217 of the first guide plate 211. A first mounting plate 213 is fixedly installed on the first movable plate 212. Two second guide plates 214 are disposed opposite to each other on the base plate 201. The second guide plates 214 are disposed inside the first guide plate 211 and parallel to the first guide plate 211. The second movable plate 215 is movably mounted on the second guide plate 214 along the width direction of the frame 1. The connection structure between the second movable plate 215 and the second guide plate 214 is the same as the connection structure between the first movable plate 212 and the first guide plate 211, and will not be described again here. The second mounting plate 216 is movably mounted on the second movable plate 215 along the height direction of the frame 1. Specifically, the surface portion of the second movable plate 215 protrudes to form a second guide portion 220, and the surface portion of the second guide portion 220 is concave to form a convex cross-section. The guide groove 221 extends in the same direction as the height of the frame 1. A second engaging plate 222 with a cross section corresponding to the guide groove 221 is fixedly installed on the second mounting plate 216. The second engaging plate 222 is movably installed in the guide groove 221. Two second moving plates 215 are fixedly connected by a connecting plate 223. A drive cylinder 224 is fixedly installed on the connecting plate 223. The piston rod of the drive cylinder 224 is fixedly connected to the second mounting plate 216 to drive the second mounting plate 216 to move along the height of the frame 1.

[0078] Two synchronous pulleys 225 are rotatably mounted on one of the second guide plates 214, and a synchronous belt 226 is fitted onto the two synchronous pulleys 225. A first fixed plate 236 is fixedly mounted on the first moving plate 212, and a second fixed plate 237 is fixedly mounted on the second moving plate 215. The synchronous belt 226 is fixedly connected to the first fixed plate 236 and the second fixed plate 237 by bolts. A drive motor 227 is fixedly mounted on the first guide plate 211, and the output shaft of the drive motor 227 is fixedly connected to any one of the synchronous pulleys 225 to drive the synchronous belt 226 to move. A slot 238 is formed on the first moving plate 212 located on the same side as the second guide plate 214 where the synchronous pulleys 225 are mounted, for the output shaft of the drive motor 227 to pass through. A moving groove 239 is formed on the second guide plate 214 for the second synchronous pulley 225 to pass through. Two fixed plates 237 are inserted through each other; the drive motor 227 rotates intermittently in both directions. When the drive motor 227 rotates in the forward direction, the first partition box 209 moves towards the first composite material 106, and the second partition box 210 moves towards the heating cover 205. When the drive motor 227 rotates in the reverse direction, the first partition box 209 moves towards the heating cover 205, and the second partition box 210 moves towards the first composite material 106. When the drive motor 227 rotates, the piston rod of the drive cylinder 224 retracts to move the second mounting plate 216 downward, preventing the first partition box 209 and the second partition box 210 from colliding at the intersection. When the second partition box 210 approaches the end of the base plate 201, the piston rod of the drive cylinder 224 extends to reset the second partition box 210.

[0079] The first partition box 209 and the second partition box 210 are rotatably mounted on the first mounting plate 213 and the second mounting plate 216, respectively. When the first partition box 209 or the second partition box 210 moves to one end close to the heating cover 205, the first partition box 209 or the second partition box 210 will flip over so that the first partition box 209 or the second partition box 210 flips into the heating cover 205, so that the heating tube 208 in the heating cover 205 can heat and melt the hot melt adhesive in the first partition box 209 or the second partition box 210. After the first partition box 209 or the second partition box 210 flips over, the melted hot melt adhesive can flow into the storage tank 204.

[0080] Specifically, a first hinge block 228 and a second hinge block 229 are fixedly installed on the first partition box 209. The first hinge block 228 is rotatably mounted on the first mounting plate 213. A first hinge rod 230 is rotatably connected to the second hinge block 229. The end of the first hinge rod 230 away from the second hinge block 229 is rotatably connected to a second hinge rod 231. The end of the second hinge rod 231 away from the first hinge rod 230 is rotatably mounted on the first mounting plate 213. A flip motor 232 is fixedly installed on the first mounting plate 213. The output shaft of the flip motor 232 is fixedly connected to the end of the second hinge rod 231 away from the first hinge rod 230 to drive the second hinge rod 231 to rotate. The connection method between the second partition box 210 and the second mounting plate 216 is the same as the connection method between the first partition box 209 and the first mounting plate 213, and will not be described again here.

[0081] When the first partition box 209 or the second partition box 210 moves to one end close to the heating cover 205, the flipping motor 232 is started, and the first hinge rod 230 and the second hinge rod 231 drive the first partition box 209 or the second partition box 210 to flip, so that the hot melt adhesive in the first partition box 209 or the second partition box 210 is closer to the heating tube 208.

[0082] The bottom part of the partition box 202 is concave to form an arc-shaped guide surface 233. Since the partition box 202 will have residual heat after entering the heating cover 205, when the first partition box 209 or the second partition box 210 moves to one end close to the first composite material 106, the fiber spray gun 102 sprays hot melt adhesive onto the first partition box 209 or the second partition box 210. Since the first partition box 209 or the second partition box 210 has residual heat, the hot melt adhesive cures slowly. The guide surface 233 can make the hot melt adhesive flow to the center of the partition box 202, preventing the hot melt adhesive from flowing out of the partition box 202.

[0083] A second delivery pump 234 is fixedly installed on the hot melt adhesive tank 109. The output end of the second delivery pump 234 is connected to the hot melt adhesive tank 109, and the input end of the second delivery pump 234 is connected to the storage tank 204 through the recycling hose 235. The second delivery pump 234 can deliver the hot melt adhesive in the storage tank 204 to the hot melt adhesive tank 109 so that the hot melt adhesive can be reused and sprayed onto the first composite material 106 through the fiber spray gun 102.

[0084] The specific working principle is as follows:

[0085] The first composite material 106 and the second composite material 107 are intermittently conveyed within the frame 1 under the action of the raw material roller 101, the extrusion roller 103, the guide roller, and the take-up roller 104. When the first composite material 106 is conveyed, the fiber spray gun 102 sprays hot melt adhesive onto the first composite material 106. In the initial state, the first baffle box 209 is located on the bottom plate 201 near the end of the first composite material 106. The first baffle box 209 can block part of the hot melt adhesive sprayed by the fiber spray gun 102, so that the hot melt adhesive can be accurately sprayed on the edge of the first composite material 106. The second baffle box 210 is located on the bottom plate 201 near the end of the heating cover 205. When the first composite material 106 stops conveying, the drive motor 227 starts, and the synchronous belt 226 and the drive cylinder 224 drive the first baffle box 209 and the second baffle box 210. The first partition box 209 moves to the end near the heating cover 205, and the flipping motor 232 drives the first partition box 209 to flip into the heating cover 205. The heating cover 205 melts the hot melt adhesive in the first partition box 209 and it flows into the storage tank 204. The second partition box 210 moves to the end near the first composite material 106 to block the hot melt adhesive. This process is repeated, with the first partition box 209 and the second partition box 210 alternately blocking the hot melt adhesive and heating and melting it. This allows the partition box 202 to continuously block the hot melt adhesive and guide it into the storage tank 204, preventing excessive accumulation of hot melt adhesive on the partition box 202 and affecting the blocking effect. The second delivery pump 234 can continuously deliver the hot melt adhesive in the storage tank 204 to the hot melt adhesive tank 109 for reuse.

[0086] Example 2:

[0087] Step 1: Raw material preparation. Prepare two non-woven fabric raw materials with different properties as the first composite material and the second composite material. Place them on two raw material rollers respectively. Pull the first composite material and the second composite material out of the raw material rollers and pass through the gap between the two extrusion rollers. Fix the first composite material on the take-up roller. The first composite material is installed below the second composite material. After the second composite material is pulled out of the raw material roller, it passes above the guide roller and then passes through the gap between the extrusion rollers.

[0088] Step 2:

[0089] During the conveying of the first composite material, the fiber spray gun sprays hot melt adhesive onto the first composite material. The two partition boxes on the partition device move alternately below the fiber spray gun under the drive of the drive component to block the hot melt adhesive outside the edge of the first composite material in the partition box. When one partition box is blocking the hot melt adhesive, the other partition box moves into the heating cover, and the heating cover melts the hot melt adhesive in the partition box and flows into the storage tank.

[0090] The hot melt adhesive in the storage tank is recycled back to the hot melt adhesive tank via a second transfer pump.

[0091] Two baffle boxes alternately separate and heat the hot melt adhesive, preventing excessive accumulation of hot melt adhesive in the baffle boxes from affecting the baffle effect; the hot melt adhesive melted into the storage tank can be continuously reused through the second delivery pump;

[0092] Step 3: Extrusion bonding. The second composite material and the first composite material after being sprayed with hot melt adhesive are extruded and bonded through the gap of the extrusion rollers.

[0093] Step 4: Take-up. The composite nonwoven fabric is rolled up onto the take-up roller.

[0094] The above method enables fully automated production of composite nonwoven fabrics, and reduces the waste rate of nonwoven fabric raw materials during the production process, thus saving production costs.

[0095] The above description is merely a selection of preferred embodiments of this disclosure and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in the embodiments of this disclosure is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-described inventive concept. For example, technical solutions formed by substituting the above-described features with (but not limited to) technical features with similar functions disclosed in the embodiments of this disclosure.

Claims

1. A high-strength nonwoven fabric production equipment, comprising: frame; Two raw material rollers are rotatably mounted on the frame, and a first composite material and a second composite material are respectively wound on the two raw material rollers; A fiber spray gun is fixedly mounted on the frame and positioned above the first composite material; Two extrusion rollers are rotatably mounted on the frame, with a gap between the two extrusion rollers for the first composite material and the second composite material to pass through; A take-up roller is rotatably mounted on the frame to take up the laminated fabric. Its features are: The high-strength nonwoven fabric production equipment also includes: Two partition devices are arranged opposite each other on both sides of the first composite material; The barrier device includes: The base plate is fixedly mounted on the frame; Two partition boxes are movably mounted on the base plate, with the two partition boxes respectively located at both ends of the base plate; A drive assembly to drive the two partition boxes to move and exchange positions; A storage tank is fixedly mounted on the frame and located on the side of the base plate away from the first composite material, with a liquid inlet formed on its top surface; A heating cover is fixedly installed on the storage box, and several heating tubes are installed inside the heating cover. Specifically, when the partition box moves to one end of the base plate near the first composite material, the partition box is located between the fiber spray gun and the first composite material; when the partition box moves to one end of the base plate away from the first composite material, the partition box enters the heating shell so that the hot melt adhesive in the partition box melts and flows into the storage tank.

2. The high-strength nonwoven fabric production equipment according to claim 1, characterized in that: The driving component includes: The first guide plate is fixedly mounted on the base plate; The first movable plate is movably disposed on the first guide plate along the width direction of the frame; A first mounting plate is fixedly mounted on the first movable plate; The second guide plate is fixedly mounted on the base plate and is arranged parallel to the first guide plate; The second movable plate is movably disposed on the second guide plate along the width direction of the frame; The second mounting plate is movably disposed on the second movable plate along the height direction of the frame; The two partition boxes are respectively disposed on the first mounting plate and the second mounting plate.

3. The high-strength nonwoven fabric production equipment according to claim 2, characterized in that: Two synchronous pulleys are rotatably mounted on the second guide plate, and a synchronous belt is fitted onto the two synchronous pulleys. The synchronous belt is fixedly connected to the first moving plate and the second moving plate. A drive motor is fixedly mounted on the first guide plate, and the output shaft of the drive motor is fixedly connected to any one of the synchronous pulleys.

4. The high-strength nonwoven fabric production equipment according to claim 3, characterized in that: A drive cylinder is fixedly mounted on the second movable plate, and the piston rod of the drive cylinder is fixedly connected to the second mounting plate.

5. The high-strength nonwoven fabric production equipment according to claim 4, characterized in that: The two partition boxes include a first partition box and a second partition box; The first partition box and the second partition box are respectively rotatably mounted on the first mounting plate and the second mounting plate; A first hinge block and a second hinge block are fixedly installed on the first partition box, and the first hinge block is rotatably mounted on the first mounting plate; The first hinge rod is rotatably connected to the second hinge block, the end of the first hinge rod away from the second hinge block is rotatably connected to the second hinge rod, and the end of the second hinge rod away from the first hinge rod is rotatably mounted on the first mounting plate. A flip motor is fixedly mounted on the first mounting plate. The output shaft of the flip motor is fixedly connected to the end of the second hinge rod away from the first hinge rod to drive the second hinge rod to rotate. The connection method between the second partition box and the second mounting plate is the same as the connection method between the first partition box and the first mounting plate.

6. The high-strength nonwoven fabric production equipment according to claim 5, characterized in that: The bottom part of the partition box is concave to form an arc-shaped flow guide surface.

7. The high-strength nonwoven fabric production equipment according to claim 6, characterized in that: A hot melt adhesive tank is fixedly installed on the frame, and a first delivery pump and a second delivery pump are fixedly installed on the hot melt adhesive tank. The input end of the first delivery pump is connected to the hot melt glue tank, and the output end of the first delivery pump is connected to the fiber spray gun through the glue delivery hose. The output end of the second delivery pump is connected to the hot melt adhesive tank, and the input end of the second delivery pump is connected to the storage tank through a recycling hose.

8. The high-strength nonwoven fabric production equipment according to claim 1, characterized in that: The frame is equipped with a rotatable guide roller to change the conveying direction of the second composite material.

9. A method for producing high-strength nonwoven fabric using the high-strength nonwoven fabric production equipment according to any one of claims 1-8, characterized in that: Includes the following steps: Step 1: Raw material preparation. Prepare two non-woven fabric raw materials with different properties as the first composite material and the second composite material. Place them on two raw material rollers respectively. Pull the first composite material and the second composite material out of the raw material rollers and through the gap between the two extrusion rollers. Fix the first composite material on the take-up roller. Step 2: Baffle spraying. During the first composite material conveying process, the fiber spray gun sprays hot melt adhesive onto the first composite material; the two baffle boxes on the baffle device move alternately below the fiber spray gun under the drive of the drive component to block the hot melt adhesive outside the edge of the first composite material in the baffle box; when one baffle box is blocking the hot melt adhesive, the other baffle box moves into the heating shell, and the heating shell melts the hot melt adhesive in the baffle box and flows into the storage tank; Step 3: Extrusion bonding. The second composite material and the first composite material after being sprayed with hot melt adhesive are extruded and bonded through the gap of the extrusion rollers. Step 4: Take-up. The composite nonwoven fabric is rolled up onto the take-up roller.

10. The method for producing high-strength nonwoven fabric according to claim 9, characterized in that: Step 2 further includes: recycling, in which the hot melt adhesive in the storage tank is recycled back into the hot melt adhesive tank by a second delivery pump.

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