Sanitary non-woven fabric production and processing equipment

Abstract

The utility model relates to the technical field of non-woven fabric processing, in particular to sanitary non-woven fabric producing and processing equipment which comprises an impurity removing assembly and a lapping assembly arranged on one side of the impurity removing assembly and connected with the impurity removing assembly. According to the utility model, through the weighing module and the electric control valve, the fiber weight is monitored and regulated in real time, the consistency of the lapping thickness is ensured, and the product quality is improved; the compression roller works at the bottom of the baffle, fibers are effectively compacted, uniform lapping is ensured, and a good foundation is provided for subsequent hot pressing or bonding; through electrostatic field adsorption of a large-aperture screen plate, a small-aperture grating plate and a conductive net on a regulation and control roller, fibers are uniformly adsorbed and spread on conveying cavities, and meanwhile, the problem that the laying uniformity of sanitary non-woven fabric raw material short fibers is insufficient is further solved by regulating and controlling the thickness of the fibers in a multi-point mode through a plurality of sets of conveying cavities.

Description

Technical Field

[0001] The utility model relates to the technical field of non-woven fabric processing, in particular to a sanitary non-woven fabric production and processing device. Background Art

[0002] In modern society, people's growing health awareness and demand for better quality of life have driven the rapid development of the hygiene products market. As one of the core materials for various hygiene products, the production technology and equipment of sanitary nonwovens are constantly innovating and upgrading to meet the market's diverse and high-performance demands.

[0003] Existing sanitary nonwoven fabric production and processing equipment generally uses dry-laid nonwoven processes, with air-laid, hydroentangled, and hot-melt bonding being the most common methods. Air-laid technology uses high-speed air to disperse and deposit fibers onto a collection surface to form a web; hydroentangled webs use the impact of high-pressure water to entangle fibers; and hot-melt bonding utilizes the thermoplastic properties of some fibers at high temperatures, bonding the web into shape after cooling.

[0004] Although these technologies have been widely used, there are still some technical bottlenecks. For example, the uniformity of the finished product is difficult to control, especially under high-speed production conditions. The uneven thickness of the fiber web will directly affect the quality of the finished product. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a sanitary non-woven fabric production and processing equipment.

[0006] The technical solution of the utility model is a sanitary non-woven fabric production and processing equipment: it includes a dust removal component and a web laying component arranged on one side of the dust removal component and connected to the dust removal component; the web laying component includes a web laying shell, a baffle arranged vertically inside the web laying shell, multiple groups of fiber suction machines and conveying rollers arranged inside the web laying shell, a pressure roller rotatably arranged at the bottom of the baffle, a fiber bin arranged at the top of the web laying shell, and a regulating roller arranged at the bottom of the fiber bin and connected to the fiber bin through a transport pipe group; the regulating roller is composed of a combined roller and a fixed sleeve arranged inside and outside, the combined roller is composed of an axle rod, a plurality of conveying cavities spaced and rotatably arranged on the axle tube, and a micro-motor corresponding to the conveying cavity for driving the conveying cavity to rotate, the side opening of the conveying cavity is sequentially provided with a breathable membrane and a conductive mesh from the inside to the outside, the side opening of the fixed sleeve is provided with an adsorption shell corresponding to the side opening of the conveying cavity, the inner side of the adsorption shell is provided with a fine-pore grid plate, and the outer side opening of the adsorption shell is provided with a coarse-pore mesh plate.

[0007] Description: Voltage is applied to the surface of the conductive mesh to form an electrostatic field, which uniformly adsorbs the fibers passing through the adsorption shell on the conveying cavity. Accurate feeding and fiber recovery are achieved by regulating the adsorption shell and the conveying cavity on the roller, which can avoid fiber clumping and evenly distribute short fibers. The use of electrostatic field adsorption can also avoid excessive adsorption power and high fiber activity causing clumping, and avoid affecting the flatness of fiber laying. By rotating the conveying cavity to open the valve, the fiber layer evenly attached to the conveying cavity is allowed to fall for replenishment. Compared with the traditional device that directly puts in fiber clumping, it can improve the uniformity of the finished fiber web and make the thickness of multiple points uniform and consistent.

[0008] Furthermore, the conveying cavity and the rotating sealed connection between the shaft tube are provided with mesh holes, and the end of the shaft tube is connected to a suction fan and an air supply fan through a pipeline; a conveying valve fixedly connected to the conveying cavity is slidably provided on the regulating roller.

[0009] Description: The fibers are further adsorbed and transported by the suction fan and the blower installed in the pipeline to improve the uniformity of fiber laying on the surface of the adsorption chamber. When the fibers need to be replenished, the micro motor rotates the delivery chamber at the corresponding position. At this time, the delivery valve automatically rotates and opens synchronously, and the other end synchronously closes the connection between the adsorption shell and the delivery chamber to improve the fiber delivery efficiency.

[0010] Furthermore, the longitudinal sections of the fine-aperture grid plate and the coarse-aperture screen plate are both arc-shaped; and a plurality of micro blades are provided on the inner wall of the holes of the coarse-aperture screen plate.

[0011] Description: The curved design prevents fibers from getting stuck or clogged during passage, and the micro-blades disperse the fibers entering the adsorption shell. As the fibers pass through the holes of the coarse-aperture mesh, the micro-blades cut or comb any clumps or tangled fibers, dispersing them. This helps prevent fibers from becoming clogged in the holes of the coarse-aperture mesh, improves the uniformity of the fibers within the adsorption shell, and consequently improves the uniformity of adsorption in the delivery cavity.

[0012] Furthermore, the micro blade is connected to the inner wall of the hole of the coarse-aperture mesh plate in a damping rotation manner.

[0013] Note: The damping connection can reduce the friction when the fiber mass moves on the inner wall of the mesh hole, avoid fiber blockage, and reduce wear in the hole.

[0014] Furthermore, the impurity removal component includes a first shell, multiple groups of sawtooth rollers arranged inside the first shell, a discharge channel arranged inside the first shell, an air injection pipe arranged in the discharge channel, a second shell connected to the first shell through a valve and a screen plate, a partition arranged inside the second shell, and a screen cylinder arranged on the partition; the first shell is provided with a feed port corresponding to the positions of the multiple groups of sawtooth rollers.

[0015] Description: Multiple sets of sawtooth rollers are located directly below the feed port, which can immediately comb the incoming fibers and preliminarily remove impurities, ensuring that the fibers for subsequent processing are purer; the air jet sprays high-pressure gas into the discharge channel to further separate the fibers and impurities, and utilizes the physical properties of the airflow to improve the precision of impurity removal; the screen drum and partition work inside the second shell to finely separate the fibers and impurities to ensure fiber quality; the automatic separation and collection of impurities is achieved through the control of valves and screen plates, reducing manual intervention and improving production efficiency and safety.

[0016] Furthermore, the second shell is connected to the web-laying shell through a mesh plate and a plurality of electrically controlled valves; a weighing module is provided on the inner bottom of the web-laying shell located on one side of the pressure roller, and the weighing module includes a plurality of groups of weighing sensors corresponding one to one to the longitudinal positions of the electrically controlled valves.

[0017] Description: The weighing sensor can monitor the fiber weight in real time, ensuring accurate measurement of the fiber during transmission and avoiding uneven thickness during the laying process; the electronically controlled valve automatically adjusts its opening according to the feedback from the weighing sensor to achieve precise control of the fiber flow and ensure the uniformity and continuity of the fiber laying process.

[0018] Furthermore, the fiber bin is connected to the lower half of the second shell through a conveying pipe, and a weighing sensor is provided inside the fiber bin; a hot pressing roller is also provided inside the web laying shell and on the side of the regulating roller; and a laser scanner for detecting the web laying thickness is also provided inside the web laying shell.

[0019] Description: The application of hot pressing rollers can not only effectively bond the fiber layers to form a stable structure, but also pre-form the non-woven fabric immediately after laying, thereby improving the physical properties of the non-woven fabric. The use of laser scanners can realize real-time monitoring of the laying thickness, which is convenient for regulating the feeding and recycling operations of the rollers.

[0020] The beneficial effects of the present invention are as follows: the present invention monitors and controls the fiber weight in real time through one-to-one correspondence between the weighing module and the longitudinal position of the electric control valve, thereby ensuring the consistency of the laying thickness and improving product quality; through the cooperation of multiple groups of fiber suction machines and conveying rollers, the uniform distribution and continuous conveying of the fibers are guaranteed, thereby improving production efficiency; the pressing roller works at the bottom of the baffle to effectively compact the fibers, ensure uniform laying of the web, and provide a good foundation for subsequent hot pressing or bonding; through the electrostatic field adsorption of the coarse-pore mesh plate and fine-pore grid plate on the regulating roller and the conductive net, the fibers are uniformly adsorbed and spread on the conveying cavity, and the synergistic effect of the suction fan and the blower is utilized to achieve efficient conveying of the fibers, and at the same time, the fiber thickness is controlled at multiple points by multiple groups of conveying cavities, thereby further optimizing the problem of insufficient laying uniformity of the short fibers of the raw materials of sanitary non-woven fabrics. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a longitudinal sectional view of Example 1 of the present utility model;

[0022] Figure 2 This is a schematic structural diagram of the control roller in Example 1 of the present utility model;

[0023] Figure 3 This is a longitudinal sectional view of the regulating roller of Example 1 of the present utility model;

[0024] Figure 4 This is an enlarged view of the local structure of Example 3 of the present utility model;

[0025] Among them, 1-impurity removal component, 11-first shell, 12-sawtooth roller, 13-feeding channel, 14-injection pipe, 15-second shell, 16-partition, 17-screen drum, 2-laying component, 21-laying shell, 22-baffle, 221-electric cylinder, 222-laser scanner, 23-fiber suction machine, 24 conveying roller, 25-pressing roller, 26 weighing module, 27-fiber bin, 28-regulating roller, 281-conveyance chamber, 2811-conveyance valve, 282-micro motor, 283-breathable membrane, 284-conductive net, 285-adsorption shell, 286-fine pore grid, 287-coarse pore grid, 29-hot pressing roller. DETAILED DESCRIPTION

[0026] The present invention will be described in further detail below in conjunction with specific implementation methods to better reflect the advantages of the present invention.

[0027] Example 1: Figure 1 The hygienic non-woven fabric production and processing equipment shown includes a debris removal component 1 and a web laying component 2 arranged on one side of the debris removal component 1 and connected to the debris removal component 1;

[0028] The impurity removal assembly 1 includes a first housing 11, two sets of sawtooth rollers 12 disposed inside the first housing 11, a material discharge channel 13 disposed inside the first housing 11, an air injection pipe 14 disposed in the material discharge channel 13, a second housing 15 connected to the first housing 11 via a valve and a sieve plate, a partition 16 disposed inside the second housing 15, and a sieve drum 17 disposed on the partition 16; the first housing 11 is provided with feed ports corresponding to the positions of the multiple sets of sawtooth rollers 12; the shafts of the sawtooth rollers 12 are connected to an electrically controlled rotating motor;

[0029] The material discharge channel 13 is a sloped shape with a narrow bottom and a wide top;

[0030] The lower half of the second shell 15 is also provided with a suction fan and a conveyor belt; the bottom of the second shell 15 is provided with a sewage valve pipe; the screen drum 17 is provided with a valve connected to the conveyor belt;

[0031] like Figure 2 As shown, the web laying assembly 2 includes a web laying shell 21, a baffle 22 vertically arranged inside the web laying shell 21, multiple groups of fiber suction machines 23 and conveying rollers 24 arranged inside the web laying shell 21, a pressing roller 25 rotatably arranged at the bottom of the baffle 22, a fiber bin 27 arranged at the top of the web laying shell 21, and a regulating roller 28 arranged at the bottom of the fiber bin 27 and connected to the fiber bin 27 through a conveying pipe group;

[0032] like Figure 3 As shown, the regulating roller 28 is composed of a combination roller 288 and a fixed sleeve 289 arranged inside and outside. The combination roller 288 is composed of a shaft, a plurality of conveying cavities 281 spaced and rotatably arranged on the shaft tube, and a micro motor 282 corresponding to the conveying cavity 281 and applied to the conveying cavity 281 to drive the conveying cavity 281 to rotate. The side openings of the conveying cavity 281 are provided with a breathable membrane 283 and a conductive mesh 284 from the inside to the outside. The side openings of the fixed sleeve 289 are provided with an adsorption shell 285 corresponding to the side openings of the conveying cavity 281. The inner side of the adsorption shell 285 is provided with a fine-pore grid plate 286, and the outer side opening of the adsorption shell 285 is provided with a coarse-pore mesh plate 287.

[0033] The end surface of the delivery cavity 281 is provided with a gear ring, and the output end of the micro motor 282 is provided with a micro gear meshing with the gear ring; the micro motor 282 is provided on the fixed sleeve 289 via a connecting rod;

[0034] The conveying cavity 281 and the shaft tube rotation seal connection are both provided with meshes, and the end of the shaft tube is connected to a suction fan and a blower through a pipeline; the regulating roller 28 is slidably provided with a conveying valve 2811 fixedly connected to the conveying cavity 281;

[0035] The longitudinal sections of the fine-aperture grid plate 286 and the coarse-aperture screen plate 287 are both arc-shaped; a plurality of micro blades are provided on the inner wall of the holes of the coarse-aperture screen plate 287;

[0036] The micro blade is connected to the inner wall of the hole of the coarse-aperture mesh plate 287 in a damped rotation manner; the micro blade is in the shape of a disc, and a central axis for rotation is provided at the center of the micro blade. The central axis passes through and is rotationally connected to the inner wall of the hole of the coarse-aperture mesh plate 287. A sleeve made of wear-resistant rubber material is sleeved on the central axis on the contact surface with the inner wall of the hole to increase friction and achieve a damped rotation effect;

[0037] The average pore size of the fine-pore grid 286 is 0.7 cm and the thickness is 0.8 cm; the average pore size of the coarse-pore grid 287 is 1.5 cm and the thickness is 3 cm. A grid with a certain thickness can store a certain amount of fiber during transportation, promoting uniform distribution of the fiber in the grid.

[0038] The inside of the conveying cavity 281 is evenly arranged with a second air suction port and an air outlet connected to the pipeline; the inside of the adsorption shell 285 is provided with a first air suction port connected to the pipeline, and the surface of the first air suction port is provided with a screen curtain;

[0039] The second housing 15 is connected to the web laying housing 21 via a mesh plate and a plurality of electrically controlled valves. A weighing module 26 is provided on the bottom of the web laying housing 21 on one side of the pressure roller 25. The weighing module 26 includes a plurality of weighing sensors corresponding to the longitudinal positions of the electrically controlled valves.

[0040] The fiber bin 27 is connected to the lower half of the second shell 15 through a conveying pipe. A weighing sensor is provided inside the fiber bin 27. A hot pressing roller 29 is also provided inside the web laying shell 21 and on one side of the regulating roller 28.

[0041] This embodiment also includes a power supply and a controller electrically connected to the serrated roller 12, the pressure roller 25, the conveying roller 24, the suction fan, the conveyor belt, the recovery valve, the conveying valve, and the hot pressing roller 29. The serrated roller 12, the pressure roller 25, the conveying roller 24, the suction fan, the conveyor belt, the recovery valve, the conveying valve, the hot pressing roller 29, the power supply, and the controller are all commercially available products and will not be described in detail here.

[0042] The working principle of this embodiment is as follows: the fibers enter from the feed port on the first shell 11, and the two sets of sawtooth rollers 12 directly below start working, grabbing and combing the fibers by saw teeth to preliminarily separate the impurities in the fibers; the fibers combed by the sawtooth rollers 12 enter the discharge channel 13, the internal volume of which is wide at the top and narrow at the bottom, which is conducive to the downward flow of the fibers, and the air jet 14 sprays high-pressure gas to the fibers, so that the fibers at the bottom are not easily deposited, and larger impurities are filtered out, so that the fibers enter the second shell 15 with the air flow; the fibers and fine impurities enter the second shell 15 through the valve and the screen plate, and the fine impurities are further screened by the partition 16 and the screen drum 17, and finally discharged through the sewage valve pipe, and the fibers enter the laying assembly 2 through the conveyor belt: the cleaned fibers enter the laying assembly 2 through the mesh plate and the electric control valve between the second shell 15 and the laying shell 21, and the fibers are in the laying shell 21, Multiple groups of fiber suction machines 23 are further combed and guided by the conveying roller 24 at the same time; the fibers are flattened by the pressing roller 25 to ensure uniform web laying, and the weighing module 26 monitors the fiber weight in real time, adjusts the opening of the electronically controlled valve, and maintains a consistent web laying thickness; voltage is applied to the surface of the conductive mesh 284 to form an electrostatic field, and the fibers passing through the adsorption shell 285 are evenly adsorbed on the conveying chamber 281, and the suction fan is used to control the evenness of the fiber laying. At the position where fibers need to be replenished, the micro motor 282 is used to rotate the adsorption shell 285 to open the conveying valve 2811, turn off the electrostatic field, and turn on the blower to make the fibers leave the conveying chamber 281 and fall to the corresponding position by gravity. The transport pipe group of the fiber bin 27 is opened and closed as needed. When excess fibers need to be adsorbed, the fibers at the corresponding position are adsorbed by the suction fan into the adsorption shell 285, and then stored in the fiber bin 27 through the transport pipe group.

[0043] Example 2: This example differs from Example 1 in that a dryer is further provided inside the second shell 15. The dryer in this example is a commercially available product. The built-in dryer can effectively remove moisture from the fiber and facilitates impurity removal.

[0044] Example 3: This example is different from Example 1 in that Figure 4 As shown, the mesh laying shell 21 is provided with an electric cylinder 221 whose output end is connected to the top of the baffle 22, and the baffle 22 passes through the mesh laying shell 21 and is slidingly and sealedly connected to the mesh laying shell 21; the electric cylinder in this embodiment is a commercially available product, and the electric cylinder is electrically connected to the power supply and the controller; the electric cylinder can accurately control the height of the baffle, and then flexibly adjust the thickness of the fiber layer to adapt to the process requirements of different non-woven products; the up and down movement of the baffle helps to guide the fibers to spread evenly, prevent excessive fiber accumulation in some areas, and ensure the uniformity and flatness of the finished product.

[0045] Example 4: This example differs from Example 1 in that a laser scanner 222 for detecting the thickness of the web is further provided inside the web laying shell 21. In this example, the laser scanner 222 is a commercially available product, and the laser scanner 222 is electrically connected to the power supply and the controller.

Claims

1. A sanitary nonwoven fabric production and processing equipment, characterized in that, The invention comprises a cleaning component (1), and a web laying component (2) arranged on one side of the cleaning component (1) and connected to the cleaning component (1); the web laying component (2) comprises a web laying shell (21), a baffle (22) arranged vertically inside the web laying shell (21), a plurality of fiber suction machines (23) and conveying rollers (24) arranged inside the web laying shell (21), a pressing roller (25) rotatably arranged at the bottom of the baffle (22), a fiber bin (27) arranged at the top of the web laying shell (21), and a regulating roller (28) arranged at the bottom of the fiber bin (27) and connected to the fiber bin (27) through a transport pipe group; the regulating roller (28) is composed of a combination roller (21) arranged inside and outside. 88) and a fixed sleeve (289), the combined roller (288) is composed of a shaft, a plurality of conveying cavities (281) that are spaced and rotatably arranged on the shaft tube, and a micro motor (282) that is matched with the conveying cavities (281) and is used to drive the conveying cavities (281) to rotate. The side opening of the conveying cavity (281) is provided with a breathable membrane (283) and a conductive mesh (284) in sequence from the inside to the outside. The side opening of the fixed sleeve (289) is provided with an adsorption shell (285) corresponding to the side opening of the conveying cavity (281), the inner side of the adsorption shell (285) is provided with a fine-pore grid plate (286), and the outer side opening of the adsorption shell (285) is provided with a coarse-pore mesh plate (287).

2. The sanitary nonwoven fabric production and processing equipment according to claim 1, characterized in that: The conveying cavity (281) and the shaft tube rotation seal connection are both provided with mesh holes, and the end of the shaft tube is connected to a suction fan and a blower through a pipeline; the regulating roller (28) is slidably provided with a conveying valve (2811) fixedly connected to the conveying cavity (281).

3. The sanitary nonwoven fabric production and processing equipment according to claim 2, characterized in that: The longitudinal sections of the fine-aperture grid plate (286) and the coarse-aperture mesh plate (287) are both arc-shaped; a plurality of micro blades are provided on the inner wall of the holes of the coarse-aperture mesh plate (287).

4. The sanitary nonwoven fabric production and processing equipment according to claim 3, characterized in that: The micro blade is connected to the inner wall of the hole of the coarse aperture mesh plate (287) in a damping rotation manner.

5. The sanitary nonwoven fabric production and processing equipment according to claim 1, characterized in that: The impurity removal component (1) comprises a first shell (11), a plurality of groups of sawtooth rollers (12) arranged inside the first shell (11), a material discharge channel (13) arranged inside the first shell (11), an air injection pipe (14) arranged in the material discharge channel (13), a second shell (15) connected to the first shell (11) via a valve and a sieve plate, a partition (16) arranged inside the second shell (15), and a sieve drum (17) arranged on the partition (16); the first shell (11) is provided with a feed port corresponding to the position of the plurality of groups of sawtooth rollers (12).

6. The sanitary nonwoven fabric production and processing equipment according to claim 5, characterized in that: The second shell (15) is connected to the web laying shell (21) through a mesh plate and a plurality of electrically controlled valves; a weighing module (26) is provided on the inner bottom of the web laying shell (21) on one side of the pressure roller (25), and the weighing module (26) includes a plurality of groups of weighing sensors corresponding to the longitudinal positions of the electrically controlled valves.

7. The sanitary nonwoven fabric production and processing equipment according to claim 6, characterized in that: The fiber bin (27) is connected to the lower half of the second shell (15) through a conveying pipe, and a weighing sensor is provided inside the fiber bin (27); a hot pressing roller (29) is also provided inside the web laying shell (21) and located on one side of the regulating roller (28); and a laser scanner (222) for detecting the thickness of the web is also provided inside the web laying shell (21).

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