A device for treating the surface of needle-punched nonwoven fabric to raise the nap.

Abstract

This utility model belongs to the field of nonwoven fabric production and processing technology, and in particular to a device for treating the surface fuzzing of needle-punched nonwoven fabric. It includes a box, an unwinding roller, a winding roller, two mounting frames, two hot press plates, two hollow shafts, an adjusting component, a guiding component, two fixed cylinders, two rotating cylinders, a cutting component, and a vacuum cleaner. The box has an inlet and an outlet on both sides, and the guiding component is located inside the inlet and outlet. The unwinding roller and the winding roller are rotatably mounted on both sides of the box. Two guide ports are provided on both the front and rear sides of the box. This utility model has a reasonable design, employing a method of first cutting off the fuzz before hot pressing and promptly cleaning up the cut fuzz. This makes the hot pressing process more effective, improving the smoothness and density of the nonwoven fabric surface. Simultaneously, it makes the nonwoven fabric surface smoother and more comfortable to the touch, significantly improving product quality.

Description

Technical Field

[0001] This utility model relates to the field of nonwoven fabric production and processing technology, and in particular to a device for treating the surface of needle-punched nonwoven fabric to raise the nap. Background Technology

[0002] In the field of nonwoven fabric production, needle-punched nonwoven fabrics are widely used in various industries such as medical and health care, filtration materials, and decorative materials due to their advantages such as high strength and good air permeability. However, during the production process of needle-punched nonwoven fabrics, due to the needle-punching process and the characteristics of the fibers themselves, the surface of the fabric is prone to fuzzing. Traditional methods for treating surface fuzzing in needle-punched nonwoven fabrics, such as heat pressing, can improve surface smoothness to some extent, but they cannot precisely remove long or stubborn fuzz. Furthermore, the fuzz can easily be pressed into the fabric during heat pressing, forming clumps that affect the product's appearance and feel. Singeing, on the other hand, risks damaging the fabric's structure and reducing product performance. Simple chemical coatings are not only costly but may also affect the fabric's original breathability and other properties. Existing fuzzing treatment methods fail to meet the demands for efficient and precise fuzzing removal while simultaneously ensuring product quality.

[0003] Therefore, this utility model proposes a needle-punched nonwoven fabric surface napping treatment device to solve the above problems.

[0004] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings mentioned in the background section by providing a device for treating the surface of needle-punched nonwoven fabrics by raising the nap.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a needle-punched nonwoven fabric surface napping treatment device, comprising a box, an unwinding roller, a winding roller, two mounting frames, two hot press plates, two hollow shafts, an adjustment component, a guide component, two fixed cylinders, two rotating cylinders, a cutting component, and a vacuum cleaner. The box body has a feed inlet and a discharge outlet on each side. The guide assembly is located within the feed inlet and discharge outlet. The unwinding roller and the winding roller are rotatably mounted on both sides of the box body. Two guide openings are located on both the front and rear sides of the box body. Two mounting brackets are slidably mounted within their respective guide openings. The adjusting assembly is located on the front side of the box body and connected to the two mounting brackets. Two hot-pressing plates are fixedly mounted on the adjacent sides of the two mounting brackets. Two hollow shafts are rotatably mounted on their respective mounting brackets. Two fixed cylinders are fixedly mounted on their respective mounting brackets and rotatably connected to their respective hollow shafts. The rotating drums are fixedly mounted on corresponding hollow shafts and are sealed and rotatably mounted on the outside of the corresponding fixed drums. The rotating drums have multiple suction ports, and the hollow shafts have multiple hollow openings located inside the fixed drums. Two motors are fixedly mounted on two mounting brackets, and the output shafts of the two motors are axially fixedly connected to the corresponding hollow shafts. The cutting assembly is set on the two rotating drums and two hot press plates and is symmetrically arranged based on the plane where the inlet and outlet are located. The vacuum cleaner is fixedly mounted on the bottom of the box, and the air inlet of the vacuum cleaner is connected to a vacuum hose that communicates with the front ends of the two hollow shafts and maintains a sealed rotatable connection.

[0007] Preferably, the adjustment assembly includes two lifting plates, two fixed plates, a bidirectional lead screw, and a motor. Lifting plates are fixedly installed on the front side of both mounting brackets, and two fixed plates are fixedly installed on the front side of the housing. The same bidirectional lead screw is rotatably installed on the two fixed plates and threadedly connected to the two lifting plates. Motor is fixedly installed on one of the fixed plates, and the output shaft of motor is axially fixedly connected to the bidirectional lead screw.

[0008] Preferably, the same guide rod is fixedly installed on one side of the two fixed plates that are close to each other, and the guide rod is slidably connected to the two lifting plates.

[0009] Preferably, the guiding assembly includes four guide rollers, with two guide rollers rotatably installed in both the inlet and outlet, and the four guide rollers arranged in parallel to each other.

[0010] Preferably, the cutting assembly includes multiple cutters and two toothed fixed blades. Multiple cutters are fixedly installed on the outer sides of both rotating drums, and toothed fixed blades are fixedly installed on the side of both hot press plates near the rotating drums. The two toothed fixed blades are arranged parallel to each other, and the multiple cutters are staggered with the blade teeth on the corresponding toothed fixed blades.

[0011] Preferably, the ends of the two toothed fixed blades away from the hot press plate are tilted toward the corresponding side of the rotating cylinder.

[0012] Preferably, the front side of the housing has a strip-shaped opening, and both hollow shafts pass through the strip-shaped opening and extend to the front side of the housing.

[0013] Preferably, the rear end of the rotating drum and the front end of the fixed drum are both open.

[0014] Preferably, the fixed cylinder has an arc-shaped opening, and the arc-shaped opening faces the direction of the toothed fixed blade.

[0015] The beneficial effects of this utility model are: The winding and unwinding rollers allow for the winding and unwinding of the spunlace nonwoven fabric to be processed. The guiding components provide stable guidance for the fabric entering and exiting the housing. The adjustment components allow for adjustment of the distance between the two mounting frames, thereby adjusting the distance between the two hot press plates and the two rotating drums. This effectively accommodates fuzz on spunlace nonwoven fabrics of varying thicknesses for hot pressing. Furthermore, the cutting components cut the fuzz on the spunlace nonwoven fabric before it passes between the two hot press plates, achieving precise trimming of the surface fuzz. The combination of a vacuum cleaner, hollow shaft, fixed cylinder, arc-shaped opening, suction port, and suction hose ensures timely removal of the cut fuzz, preventing it from adhering to the nonwoven fabric and entering the hot pressing fuzz removal stage. This prevents fuzz from being pressed into the nonwoven fabric or forming clumps during hot pressing, thus avoiding negative impacts on the product's appearance and feel. This invention employs a method of first cutting off the fuzz before hot pressing, which makes the hot pressing process more effective. Since the fuzz has been removed, the hot pressing plate can directly act on the surface of the nonwoven fabric, allowing the fibers to melt and bond better, resulting in a more uniform hot pressing effect. This improves the smoothness and density of the nonwoven fabric surface, while also making the surface of the nonwoven fabric flatter and smoother, with a softer and more comfortable feel, significantly improving product quality. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a three-dimensional structural diagram of a needle-punched nonwoven fabric surface napping treatment device proposed in this utility model; Figure 2 for Figure 1 A structural diagram from another perspective; Figure 3 for Figure 1 A schematic diagram of the cross-sectional structure; Figure 4 This is a partial three-dimensional structural schematic diagram of the present invention; Figure 5 This is a schematic diagram of the structure of the toothed fixed blade, fixed cylinder, rotating cylinder, cutting blade and arc-shaped opening portion proposed in this utility model; Figure 6 for Figure 5 A schematic diagram of the structure of part A.

[0018] In the diagram: 1. Housing; 11. Unwinding roller; 12. Rewinding roller; 2. Mounting frame; 201. Lifting plate; 202. Fixing plate; 203. Two-way lead screw; 204. Motor 1; 21. Hot press plate; 3. Hollow shaft; 31. Motor 2; 32. Rotary drum; 321. Cutter; 322. Dust suction port; 33. Fixing cylinder; 331. Arc-shaped opening; 34. Toothed fixed blade; 4. Vacuum cleaner; 41. Dust suction hose. Detailed Implementation

[0019] The technical solution of this utility model will now be clearly and completely described with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0020] Reference Figure 1-6 A needle-punched nonwoven fabric surface napping treatment device includes a box body 1, an unwinding roller 11, a winding roller 12, two mounting frames 2, two hot press plates 21, two hollow shafts 3, two fixed cylinders 33, two rotating cylinders 32, and a vacuum cleaner 4. The box body 1 has an inlet and an outlet on both sides, and two guide rollers are rotatably installed in both the inlet and outlet. The four guide rollers are arranged in parallel to each other, which can stably guide the spunlace nonwoven fabric entering and leaving the box body 1. The unwinding roller 11 and the winding roller 12 are rotatably mounted on both sides of the housing 1. Two guide openings are opened on both the front and rear sides of the housing 1. Two mounting brackets 2 are slidably mounted in the corresponding two guide openings. Two hot press plates 21 are fixedly mounted on the side of the two mounting brackets 2 that are close to each other. Two hollow shafts 3 are rotatably mounted on the corresponding mounting brackets 2. Lifting plates 201 are fixedly installed on the front side of both mounting brackets 2, and two fixing plates 202 are fixedly installed on the front side of the housing 1. The same bidirectional screw 203 is rotatably installed on the two fixing plates 202. The bidirectional screw 203 is threadedly connected to the two lifting plates 201. A motor 204 is fixedly installed on one of the fixing plates 202. The output shaft of the motor 204 is axially fixedly connected to the bidirectional screw 203. The distance between the two mounting brackets 2 can be adjusted as needed, thereby adjusting the distance between the two hot press plates 21. This allows for good adaptation to hot press depilation of spunlace nonwoven fabrics of different thicknesses. Two fixed cylinders 33 are respectively fixedly installed on the corresponding mounting brackets 2 and rotatably connected to the corresponding hollow shafts 3. Two rotating cylinders 32 are respectively fixedly installed on the corresponding hollow shafts 3 and rotatably sealed on the outside of the corresponding fixed cylinders 33. Multiple suction ports 322 are opened on the rotating cylinders 32, and multiple hollow openings are opened on the hollow shafts 3. The hollow openings are designed to keep the space inside the fixed cylinders 33 and the space inside the hollow shafts 3 connected, so that when the vacuum cleaner 4 vacuums, the cut lint can smoothly enter the hollow shafts 3 after passing through the corresponding suction ports and arc-shaped openings. Two motors 31 are fixedly installed on both mounting brackets 2, and the output shafts of the two motors 31 are respectively axially fixedly connected to the corresponding hollow shafts 3. Multiple cutters 321 are fixedly installed on the outer side of both rotating drums 32. Toothed fixed cutters 34 are fixedly installed on the side of both hot press plates 21 near the rotating drums 32. The two toothed fixed cutters 34 are arranged parallel to each other, and the multiple cutters 321 are staggered with the cutter teeth on the corresponding toothed fixed cutters 34. They can cooperate with the toothed fixed cutters 34 to cut the fuzz on the spunlace nonwoven fabric when the rotating drums 32 rotate. The vacuum cleaner 4 is fixedly installed at the bottom of the housing 1, and the air inlet of the vacuum cleaner 4 is connected to a vacuum hose 41 that is connected to the front end of the two hollow shafts 3 and maintains a sealed rotating connection. In order to extract the lint cut from the needle-punched nonwoven fabric by the toothed fixed blade 34 and multiple cutters 321 with the cooperation of the vacuum cleaner 4 and the vacuum port 322, and to prevent the cut lint from accumulating on the spunlace nonwoven fabric, the fixed cylinder 33 is provided with an arc-shaped opening 331, and the arc-shaped opening 331 faces the toothed fixed blade 34.

[0021] In this embodiment, in order to provide stable guidance for the two lifting plates 201, the same guide rod is fixedly installed on the side of the two fixed plates 202 that are close to each other, and the guide rod is slidably connected to the two lifting plates 201.

[0022] In this embodiment, in order to guide the spunlace nonwoven fabric passing between the two toothed fixed blades 34 and to prevent it from scraping against the toothed fixed blades 34 due to vibration during the conveying process, the ends of the two toothed fixed blades 34 away from the hot press plate 21 are respectively tilted toward the corresponding side of the rotating drum 32.

[0023] In this embodiment, in order to avoid affecting the normal displacement of the two hollow shafts 3 when adjusting the distance between the two rotating cylinders 32, a strip opening is provided on the front side of the housing 1, and the two hollow shafts 3 pass through the strip opening and extend to the front side of the housing 1.

[0024] In this embodiment, in order to avoid motion interference between the fixed cylinder 33 and the rotating cylinder 32 located on the same hollow shaft 3 during operation, the rear end of the rotating cylinder 32 and the front end of the fixed cylinder 33 are both set in an open shape.

[0025] The circuits, electronic components, and module mechanisms involved all employ existing technologies, which can be fully implemented by those skilled in the art, and need no further explanation. The content protected by this application does not involve any improvement to the software, circuits, or methods.

[0026] Working principle: In use, first connect the power supply and place the spunlace nonwoven fabric to be processed on the unwinding roller 11. Start the device, and the unwinding roller 11 will start to rotate, releasing the nonwoven fabric. Through the guiding action of the guide roller, the nonwoven fabric smoothly enters the box 1. As the nonwoven fabric moves, it first passes between the two rotating drums 32. At this time, the motor 31 drives the hollow shaft 3 and the rotating drum 32 to rotate. The cutter 321 on the outside of the rotating drum 32 cooperates with the toothed fixed knife 34 on the hot press plate 21 to cut the lint on the nonwoven fabric. The cut lint is sucked into the hollow shaft 3 through the suction hose 41 with the cooperation of the vacuum cleaner 4 and the suction port 322, and is finally collected by the vacuum cleaner 4. This avoids the lint from accumulating on the nonwoven fabric and causing adverse effects on the subsequent hot press lint removal operation, effectively avoiding affecting the appearance and feel of the product.

[0027] Subsequently, the nonwoven fabric continues to move and passes between two hot press plates 21. The hot press plates 21 perform hot pressing on the nonwoven fabric, flattening the fuzz and making it better bonded to the surface of the nonwoven fabric, thereby improving the smoothness and tightness of the nonwoven fabric surface.

[0028] During the process of raising the nap of spunlace nonwoven fabric, the bidirectional lead screw 203 can be driven to rotate by the motor 204. Through the threaded connection, the two lifting plates 201 and the mounting frame 2 are pushed to move in opposite directions, thereby adjusting the distance between the two hot pressing plates 21 and the distance between the upper and lower toothed fixed blades 34 to accommodate nonwoven fabrics of different thicknesses.

[0029] Finally, the nonwoven fabric, after being heat-pressed, is fed out from the discharge port and wound up by the take-up roller 12, completing the entire processing.

[0030] The foregoing has provided a detailed description of the needle-punched nonwoven fabric surface napping treatment device provided by this utility model. Specific embodiments have been used to illustrate the principle and implementation of this utility model. The descriptions of the embodiments above are merely for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that those skilled in the art can make various improvements and modifications to this utility model without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A device for treating the surface of needle-punched nonwoven fabric by raising the nap, characterized in that, Includes a housing (1), an unwinding roller (11), a winding roller (12), two mounting brackets (2), two hot press plates (21), two hollow shafts (3), an adjustment assembly, a guide assembly, two fixed cylinders (33), two rotating cylinders (32), a cutting assembly, and a vacuum cleaner (4); The box (1) has an inlet and an outlet on its two sides respectively. The guide assembly is set in the inlet and outlet. The unwinding roller (11) and the winding roller (12) are rotatably installed on both sides of the box (1). The box (1) has two guide openings on both the front and rear sides. The two mounting brackets (2) are slidably installed in the corresponding two guide openings. The adjustment component is located on the front side of the housing (1) and connected to the two mounting brackets (2). The two hot press plates (21) are fixedly installed on the side of the two mounting brackets (2) that are close to each other. The two hollow shafts (3) are rotatably installed on the corresponding mounting brackets (2). The two fixed cylinders (33) are fixedly installed on the corresponding mounting brackets (2) and rotatably connected to the corresponding hollow shafts (3). The two rotating cylinders (32) are fixedly installed on the corresponding hollow shafts (3) and rotatably sealed on the outside of the corresponding fixed cylinders (33). The rotating cylinders (32) have multiple dust suction ports (322), and the hollow shafts (3) have multiple hollow openings located inside the fixed cylinders (33). The two mounting brackets (2) are fixedly installed with motors (31). The output shafts of the two motors (31) are axially fixedly connected to the corresponding hollow shafts (3). The cutting assembly is set on two rotating drums (32) and two hot press plates (21) and is arranged symmetrically based on the plane where the inlet and outlet are located. The vacuum cleaner (4) is fixedly installed at the bottom of the box (1), and the air inlet of the vacuum cleaner (4) is connected to a vacuum hose (41) that is connected to the front end of the two hollow shafts (3) and maintains a sealed rotational connection.

2. The needle-punched nonwoven fabric surface napping treatment device according to claim 1, characterized in that: The adjustment assembly includes two lifting plates (201), two fixed plates (202), a bidirectional lead screw (203), and a motor (204). Lifting plates (201) are fixedly installed on the front side of the two mounting brackets (2), and two fixed plates (202) are fixedly installed on the front side of the housing (1). The same bidirectional lead screw (203) is rotatably installed on the two fixed plates (202). The bidirectional lead screw (203) is threadedly connected to the two lifting plates (201). A motor (204) is fixedly installed on one of the fixed plates (202), and the output shaft of the motor (204) is axially fixedly connected to the bidirectional lead screw (203).

3. The needle-punched nonwoven fabric surface napping treatment device according to claim 2, characterized in that: The same guide rod is fixedly installed on the side of the two fixed plates (202) that are close to each other, and the guide rod is slidably connected to the two lifting plates (201).

4. The device for treating the surface of needle-punched nonwoven fabric with napping according to claim 1, characterized in that: The guiding assembly includes four guide rollers, with two guide rollers rotatably installed in both the inlet and outlet, and the four guide rollers arranged in parallel to each other.

5. The device for treating the surface of needle-punched nonwoven fabric with napping according to claim 1, characterized in that: The cutting assembly includes multiple cutters (321) and two toothed fixed cutters (34). Multiple cutters (321) are fixedly installed on the outer side of both rotating drums (32). Toothed fixed cutters (34) are fixedly installed on the side of both hot press plates (21) near the rotating drums (32). The two toothed fixed cutters (34) are arranged parallel to each other, and the multiple cutters (321) are staggered with the cutter teeth on the corresponding toothed fixed cutters (34).

6. The device for treating the surface of needle-punched nonwoven fabric with napping according to claim 5, characterized in that: The ends of the two toothed fixed blades (34) away from the hot press plate (21) are tilted toward the rotating cylinder (32) on the corresponding side.

7. The device for treating the surface of needle-punched nonwoven fabric with napping according to claim 1, characterized in that: The front side of the box (1) has a strip opening, and two hollow shafts (3) pass through the strip opening and extend to the front side of the box (1).

8. The device for treating the surface of needle-punched nonwoven fabric with napping according to claim 1, characterized in that: The rear end of the rotating cylinder (32) and the front end of the fixed cylinder (33) are both open.

9. The device for treating the surface of needle-punched nonwoven fabric with napping according to claim 5, characterized in that: The fixed cylinder (33) has an arc-shaped opening (331) facing the toothed fixed blade (34).

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