Needling equipment with mesh belt mesh feeding mechanism

Abstract

The utility model discloses needling equipment with a mesh belt mesh feeding mechanism. The needling equipment comprises the mesh belt mesh feeding mechanism and a needling mechanism, the mesh belt mesh conveying mechanism comprises two conveying meshes which are arranged up and down at an interval, and a fiber mesh is conveyed between the two conveying meshes; the up-down conveying net is composed of a plurality of net belts which are sequentially arranged in parallel, and gaps allowing needles of the needling mechanism to penetrate through are formed between the adjacent net belts. The mesh belt mesh conveying mechanism is adopted to replace a common mesh pressing roller, a mesh stripping plate and a mesh supporting plate, the phenomenon that a fluffy fiber mesh is blocked when entering a needling area due to the fact that the fiber mesh rebounds due to the fact that gaps exist between the mesh pressing roller and the mesh stripping plate as well as between the mesh pressing roller and the mesh supporting plate can be avoided, the fiber mesh is clamped and synchronously conveyed between the upper conveying mesh and the lower conveying mesh, and the needling efficiency is improved. The efficiency of the needling equipment can be greatly improved, and the process speed limitation of the traditional needling equipment is broken through.

Description

Technical Field

[0001] This utility model relates to the technical field of nonwoven fabric production equipment, and in particular to a needle punching device with a mesh belt feeding mechanism. Background Technology

[0002] Needle-punched nonwoven fabric is produced by piercing a fiber web with needles in a needle-punching machine. Simultaneously, the hooks on the needles cause fiber displacement on the surface and subsurface of the fiber web, causing the fibers to interweave and form a nonwoven product with a certain strength, density, and elasticity. This processing method improves the performance of the fiber web, enhancing its strength, density, elasticity, and other physical properties, resulting in better usability. Needle-punching machines are widely used in the production of various nonwoven materials, such as geotextiles, filter materials, insulation materials, and decorative materials.

[0003] like Figure 1 and Figure 2 As shown, in the traditional needle-punching equipment A, the feeding mechanism uses a pressure roller d to compress and feed a highly fluffy fiber web 1 with low fiber cohesion between a stripping plate b and a support plate c for needle-punching reinforcement. The needle plate a moves up and down, and the needles f pierce the fiber web 1. Both the stripping plate b and the support plate c have holes i corresponding to the needle positions to allow the needles f to pass through. The web is then pulled out by the draft roller g, completing the needle-punching process. Because there is a distance between the pressure roller d and the stripping plate b and support plate c, the fed fiber web 1 is first compressed by the pressure roller d. However, due to the elasticity of the fibers themselves, it will return to a fairly fluffy state after leaving the pressure roller d, causing congestion. At this time, the fiber web 1 is hindered at the inlet of the stripping plate and the support plate, resulting in a speed difference between the upper and lower surfaces of the fiber. Sometimes, creases are formed on the fiber web 1, affecting the quality of the needle-punched nonwoven fabric. In addition, in the needle punching zone, the needle f needs to pierce the fiber web through the holes i on the stripping plate b and the support plate c. The needle f needs to move up and down, and the forward transmission speed of the fiber web 1 is greatly affected by the frequency of the needle f's up and down movement. Therefore, the process line speed of traditional needle punching equipment is only 5m / min-30m / min, resulting in low production efficiency. Furthermore, the holes i on the stripping plate b and the support plate c need to correspond to the positions of the needle f, which also places high demands on processing accuracy. Utility Model Content

[0004] The purpose of this invention is to provide a needle punching device with a mesh belt feeding mechanism, which can reduce the impact of the feeding mechanism on the quality of needle punched nonwoven fabric, and has the advantages of high process speed and high production efficiency.

[0005] To achieve the above objectives, the solution of this utility model is:

[0006] A needle-punching device with a mesh belt feeding mechanism.

[0007] This includes the mesh belt feeding mechanism and the needle punching mechanism;

[0008] The mesh belt feeding mechanism includes two conveyor meshes spaced apart vertically, with the two conveyor meshes used for conveying fiber webs; the conveyor meshes include several mesh belts arranged in parallel in sequence, and there are gaps between adjacent mesh belts for the needles of the needle punching mechanism to pass through; the conveyor meshes are controlled by corresponding circulating transmission mechanisms to clamp the fiber webs and transmit them forward.

[0009] The needle-punching mechanism is located on at least one side of the mesh belt feeding mechanism, and includes at least one needle plate with a plurality of needles protruding from the needle plate at intervals. The needle plate of the needle-punching mechanism moves up and down, and the needles on the needle plate pass through the gap between adjacent mesh belts and pierce the fiber web in the upper and lower conveying mesh.

[0010] Furthermore, the width of the mesh belt is 0.5mm to 2mm.

[0011] Furthermore, the gap between adjacent mesh belts is 0.1mm to 10mm.

[0012] Furthermore, the needle-punching mechanism includes at least two needle plates, which are arranged parallel to each other. Each needle plate is located on the same side of the mesh belt feeding mechanism or on both sides of the mesh belt feeding mechanism.

[0013] Furthermore, the needles on the needle plate are arranged to correspond to the gaps in each mesh belt, with each needle positioned in a gap in each mesh belt.

[0014] Furthermore, the needle shape is a triangular needle, a square needle, a forked needle, or a crown-shaped needle.

[0015] Compared with traditional needle-punching equipment, this invention uses a mesh belt feeding mechanism to replace the commonly used pressure rollers, stripping plates, and support plates. This avoids the fiber web congestion that occurs when the loose fiber web enters the needle-punching area due to the gap between the pressure rollers, stripping plates, and support plates, caused by the fiber web's rebound. The mesh belt feeding mechanism consists of several upper and lower conveyor belts. During needle-punching, the needle passes through the gaps between adjacent belts and pierces the fiber web within the upper and lower conveyor belts. The piercing generates a certain compressive force, causing the fibers in the fiber web to shift and converge. The lower conveyor belt supports the fiber web, while during the return stroke, the needle moves with the fiber web due to friction. The upper conveyor belt blocks the fiber web, allowing the needle to smoothly exit the fiber web. The upper conveyor belt plays a role in stripping the fiber web, and the upper and lower conveyor belts can be composed of only a few belts, greatly reducing the processing precision required. At the same time, in this embodiment, the upper and lower conveyor belts in the belt feeding mechanism are controlled by a circulating transmission mechanism to synchronously transport the fiber web forward. This can effectively avoid the fiber web being pulled out from the gap between the stripping plate and the dragging plate in traditional needle punching equipment, which is prone to fiber web breakage or uneven web surface due to stretching. Furthermore, the needles can puncture arbitrarily in the gap between the upper and lower conveyor belts, without being restricted by the holes on the traditional stripping plate and dragging plate, reducing the risk of needle breakage. Moreover, the synchronous transport of the fiber web in the upper and lower conveyor belts can greatly improve the efficiency of the needle punching equipment and break through the process speed limitations of traditional needle punching equipment. Attached Figure Description

[0016] Figure 1 A frontal view of a traditional acupuncture device;

[0017] Figure 2 This is a top view of the wire mesh stripping plate or wire mesh support plate;

[0018] Figure 3 This is a front view schematic diagram of Embodiment 1 of this utility model;

[0019] Figure 4 This is a top view of the conveyor network of Embodiment 1 of this utility model;

[0020] Figure 5 This is a front view schematic diagram of Embodiment 2 of the present invention;

[0021] Figure 6 This is a top view of the conveyor network of Embodiment 2 of this utility model.

[0022] Label Explanation:

[0023] Traditional needle punching equipment A, needle plate a, stripping plate b, supporting plate c, pressing roller d, needle f, drawing roller g, mesh i, fiber web 1;

[0024] This embodiment:

[0025] Mesh belt feeding mechanism 10, conveyor mesh 11, mesh belt 111, gap n, mesh belt width o, needle punching mechanism 20, needle plate 21, needles 211; fiber mesh 30, comb mesh curtain 40. Detailed Implementation

[0026] To further explain the technical solution of this utility model, the following detailed description is provided through specific embodiments.

[0027] Example 1

[0028] like Figures 3 to 4 As shown, this utility model discloses a needle punching device for fiber webs, the structure of which is as follows: including a mesh belt feeding mechanism 10 and a needle punching mechanism 20;

[0029] The mesh belt feeding mechanism 10 includes two conveyor meshes 11 spaced apart vertically, with the fiber mesh 30 conveyed between the two conveyor meshes 11. Each conveyor mesh 11 is composed of several mesh belts 111 arranged in parallel, and there is a gap n between adjacent mesh belts 111 for the needles 211 of the needle-punching mechanism 20 to pass through. The width m of each mesh belt 111 can be 0.5-2 mm, and in this embodiment, the width of each mesh belt 111 is 0.5 mm. The gap n between adjacent mesh belts 111 can be 0.1-10 mm, and in this embodiment, the gap n is 1.5 mm. The mesh belts 111 can be made of metal or non-metal materials with a certain tensile strength, such as polyurethane elastomer, spandex elastomer, nylon, silicone, etc.

[0030] The needle-punching mechanism 20 is located on one side of the mesh belt feeding mechanism 10, and includes a needle plate 21. A plurality of needles 211 are protruding on the needle plate 21 at intervals. The needles 211 can be triangular, square, forked, or crown-shaped, etc. The arrangement of the needles 211 on the needle plate 21 corresponds to the arrangement of the gaps n of each mesh belt, and each needle 211 is located in each mesh belt gap n.

[0031] During operation, the fiber web 30 can enter the mesh belt feeding mechanism 10 through the combing curtain 40. The two conveying nets 11 are controlled and clamped by the corresponding circulating transmission mechanism to transport the fiber web 30 forward. The needle plate 21 of the needle punching mechanism 20 moves up and down. The needles 211 on the needle plate 21 pass through the gap n between the adjacent mesh belts 111 and pierce the fiber web 30 in the conveying net 11. Subsequently, the two conveying nets 11 are controlled by the corresponding circulating transmission mechanism to peel off and output the needled fiber web 30, which is then output through another combing curtain 40.

[0032] In this embodiment, the conveyor belt 11 in the mesh belt feeding mechanism 10 includes several mesh belts 111. The mesh belt feeding mechanism 10 can compress the fluffy fiber web 30, overcoming the existing problem of fiber web rebounding after leaving the pressing roller and entering the needle punching area due to the gap between the pressing roller and the stripping plate and the supporting plate. This compresses the fiber web and feeds it smoothly into the needle punching mechanism 20. At the same time, the mesh belts 111 in the conveyor belt 11 clamp the fiber web 30 and enter the needle punching area simultaneously, acting as the stripping plate, the supporting plate and the fiber web drawing roller.

[0033] In the needle punching process of this embodiment, the needle 211 passes through the gap n between adjacent mesh belts 111 and pierces the fiber web 30 in the conveyor net 11. During piercing, a certain compressive force is generated, causing the fibers in the fiber web 30 to shift and move closer together. The lower conveyor net 11 plays the role of supporting the fiber web. During the return stroke, due to the presence of friction, the needle 211 moves with the fiber web 30. The upper conveyor net 11 blocks the fiber web 30, allowing the needle 211 to smoothly exit from the fiber web 30. The upper conveyor net 11 plays the role of peeling the fiber web. Moreover, both the upper and lower conveyor nets 11 only require a few mesh belts 111 to form, which greatly reduces the processing precision. Furthermore, the needle 211 can pierce arbitrarily in the gap n between the mesh belts 111, without being limited by the holes on the traditional stripping plate and support plate, reducing the risk of needle breakage. At the same time, the fiber web 30 is clamped and synchronously transported in the conveyor net 11, which can greatly improve the efficiency of the needle punching equipment and break through the process speed limitations of traditional needle punching equipment.

[0034] Example 2

[0035] like Figure 5 and 6 As shown, the structure of this embodiment is basically the same as that of Embodiment 1 above, with the main difference being that the needle punching mechanism 20 includes multiple needle plates 21. Three needle plates 21 can be arranged in parallel on the upper side of the mesh belt feeding mechanism 10, and three needle plates 21 can also be arranged in parallel on the lower side of the mesh belt feeding mechanism 10. During operation, each needle 211 pierces the fiber web 30 through the gap n of the mesh belt 111 of the upper conveying mesh 11, while the needles 211 below pierce the fiber web 30 through the gap n of the mesh belt 111 of the lower conveying mesh 11. The fiber web 30 is pierced multiple times from both the upper and lower sides by the needle punching mechanism 20, which can improve the piercing efficiency and the uniformity of needle punching, resulting in a uniform needle-punched nonwoven fabric mesh with good mechanical properties. In addition, the size of the gap n between each adjacent mesh belt 111 in the mesh belt feeding mechanism 10 can be designed according to the requirements of the mesh surface. It can be the same or different. In this embodiment, the gap n between adjacent mesh belts 111 is different, and the width o of each mesh belt 111 can also be the same or different. It can be designed according to the requirements.

[0036] The above description is only a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions that fall within the scope of the present invention are within the scope of protection of the present invention.

Claims

1. A needle-punching device with a mesh belt feeding mechanism, characterized in that: This includes the mesh belt feeding mechanism and the needle punching mechanism; The mesh belt feeding mechanism includes two conveyor meshes spaced apart vertically, with the two conveyor meshes used for conveying fiber webs; the conveyor meshes include several mesh belts arranged in parallel in sequence, and there are gaps between adjacent mesh belts for the needles of the needle punching mechanism to pass through; the conveyor meshes are controlled by corresponding circulating transmission mechanisms to clamp the fiber webs and transmit them forward. The needle-punching mechanism is located on at least one side of the mesh belt feeding mechanism, and includes at least one needle plate with a plurality of needles protruding from the needle plate at intervals. The needle plate of the needle-punching mechanism moves up and down, and the needles on the needle plate pass through the gap between adjacent mesh belts and pierce the fiber web in the upper and lower conveying mesh.

2. The needle-punching device with a mesh belt feeding mechanism as described in claim 1, characterized in that: The width of the mesh belt is 0.5mm to 2mm.

3. The needle-punching device with a mesh belt feeding mechanism as described in claim 1, characterized in that: The gap between adjacent mesh belts is 0.1mm to 10mm.

4. The needle-punching device with a mesh belt feeding mechanism as described in claim 1, characterized in that: The needle-punching mechanism includes at least two needle plates, which are arranged parallel to each other. Each needle plate is located on the same side of the mesh belt feeding mechanism or on both sides of the mesh belt feeding mechanism.

5. The needle-punching device with a mesh belt feeding mechanism as described in claim 1, characterized in that: The needles on the needle plate are arranged to correspond to the gaps in each mesh belt, with each needle positioned in a specific mesh belt gap.

6. The needle-punching device with a mesh belt feeding mechanism as described in claim 1, characterized in that: The needle type is a triangular needle, a square needle, a forked needle, or a crown-shaped needle.

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