Cowhide fiber and base material composite production line and use method thereof

Abstract

The present invention relates to the field of cowhide fiber fabric production equipment, and specifically to a cowhide fiber and base material composite production line and a method of using the same, comprising two inclined screen machines and a composite conveyor, and also comprising a fiber transfer mechanism. The position where the silk screens of the two inclined screen machines are superimposed is a primary composite section, and the position where the silk screens of the two inclined screen machines and the composite conveyor are superimposed is a secondary composite section. Both the primary composite section and the secondary composite section are provided with the fiber transfer mechanism. The fiber transfer mechanism comprises an air press and a transfer vacuum adsorption box. In the primary composite section and the secondary composite section, the fibers and the silk screen are quickly and completely separated through the blowing action of the air press and the adsorption action of the transfer vacuum adsorption box. The winds blown out by the opposite wind knives meet in the middle and then spread out, so that the wind blown toward the silk screen spreads to the entire area between the two wind knives, reducing the wind pressure received by the local silk screen and avoiding the local fibers from being broken due to excessive wind pressure during the transfer process.

Description

Technical Field

[0001] The present invention relates to the field of cowhide fiber fabric production equipment, and in particular to a cowhide fiber and substrate composite production line and a use method thereof. Background Art

[0002] Cowhide leather refers to leather made from cowhide fibers. Cowhide scraps are used as raw materials, and the genuine leather fibers inside are extracted. A special process is used to form a mesh, and a cowhide fiber base cloth is made through a high-pressure water spunlace process. The leather is then coated with leather technology. The manufacturing process includes: genuine leather scraps - defibration - extraction of collagen fibers - water spunlace (according to a non-imitation process) - formation of genuine leather base - dyeing - impregnation - rubbing - leather grinding and softening - rubbing - solvent-free veneer - finished product. Among them, the inclined mesh machine is used to evenly spread the raw pulp on the wire mesh to form a cowhide fiber layer with a certain thickness. The structure of the existing inclined mesh machine is as follows: the pulp spreader is connected to the multi-layer inclined mesh headbox, and an inclined mesh vacuum forming box is provided below the multi-layer inclined mesh headbox, and a frame is fixedly installed below the multi-layer inclined mesh headbox and the inclined mesh vacuum forming box, and a frame is fixed above the frame. There is a vacuum water suction box, and a crouching roller is fixedly installed at the end of the frame, and a mesh driving roller is fixed at the back of the frame. For multi-layer composite cowhide fibers, multiple layers of fibers and base cloth are superimposed at the composite part of the wire mesh to form a multi-layer composite cowhide fiber fabric. The existing production line for producing multi-layer cowhide fibers has some problems in the production process that need to be solved and improved: the fiber transfer between existing wire meshes mostly adopts the adsorption method of a vacuum adsorption box, but in the transfer process, since the vacuum adsorption box adsorbs the fiber layer on another inclined mesh machine through a layer of wire mesh and a layer of fiber layer, its vacuum adsorption force is weak, which will cause local fibers to not be completely detached from the wire mesh, resulting in incomplete transfer; the layers of composite fabrics output from the composite production line are prone to deviation before being transported to the rear water spunlace machine, resulting in waste of fabric. In view of the above problems, this case arises. Summary of the Invention

[0003] An object of the present invention is to solve at least the above problems through a cowhide fiber and substrate composite production line and a method of using the same.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is as follows: a cowhide fiber and base material composite production line, including two inclined screen machines and a composite conveyor, characterized in that: it also includes a fiber transfer mechanism, the position where the wire meshes of the two inclined screen machines are superimposed is the primary composite section, the position where the wire meshes of the two inclined screen machines and the composite conveyor are superimposed is the secondary composite section, the primary composite section and the secondary composite section are both provided with the fiber transfer mechanism, the fiber transfer mechanism includes an air press and a transfer vacuum adsorption box, the air press and the transfer vacuum adsorption box are relatively arranged on both sides of the primary composite section and the secondary composite section, the air press includes two oppositely arranged wind knives and a return air plate connecting the two wind knives, the air outlet directions of the two wind knives are crossed and point to the primary composite section and the secondary composite section together, and the return air plate is arranged in the opposite direction of the air outlet direction.

[0005] Preferably, the angle between the center planes of the air outlets of the two air knives is 130-150 degrees, and the return air plate is an arc surface facing the wire mesh.

[0006] Preferably, it further comprises a pre-puncture mechanism, which is arranged on the composite conveyor behind the secondary composite section.

[0007] Preferably, the pre-needling mechanism includes one or more pre-needling water spunlace machines and pre-needling vacuum adsorption boxes, the pre-needling water spunlace machines are located above the wire mesh of the composite conveyor, and the pre-needling vacuum adsorption box is located below the wire mesh of the composite conveyor.

[0008] Preferably, a pre-stripping mechanism is further included, and the pre-stripping mechanism is arranged above the wire mesh at the discharge end of the composite conveyor.

[0009] Preferably, the pre-demolding machine includes a driving wheel, a driven wheel, a pre-demolding screen and a pre-demolding vacuum box, the pre-demolding screen surrounds the driving wheel and the driven wheel, and the pre-demolding vacuum box is located in the pre-demolding screen between the driving wheel and the driven wheel.

[0010] Preferably, it further comprises a substrate water film coating mechanism, and the substrate water film coating mechanism is located on the composite conveyor in front of the secondary composite section.

[0011] Preferably, the substrate water film coating mechanism includes, from front to back, a first water absorption vacuum box, an ejector, a second water absorption vacuum box and a lifting roller. The first water absorption vacuum box and the lifting roller are in contact with the bottom of the wire mesh of the composite conveyor. The top position of the lifting roller is higher than the top of the first water absorption vacuum box. A pressure roller is provided on the other side of the wire mesh opposite to the first water absorption vacuum box. The ejector and the second water absorption vacuum box are located above the wire mesh of the composite conveyor.

[0012] Preferably, a plurality of cross nozzles are evenly distributed on the ejector along the transverse direction, and the cross nozzles include nozzles arranged crosswise in the direction of the water outlet.

[0013] According to the above-mentioned method for using the cowhide fiber and base material composite production line, it is characterized in that it includes the following steps: step a, two inclined mesh machines respectively form the cowhide fiber layer and convey it through the wire mesh, and the base cloth is conveyed through the composite conveyor; step b, the fiber layers formed by the two inclined mesh machines are superimposed on the primary composite section, and the fiber layer of one inclined mesh machine is transferred to the other inclined mesh machine under the blowing action of the wind press and the adsorption action of the transfer vacuum adsorption box, and is superimposed with the fiber layer on the other inclined mesh machine. At the same time, the fiber layer on the composite conveyor The base fabric is moistened by spraying water through a substrate water film coating mechanism to form a water film on its surface; in step c, the stacked fiber layers are transported to the secondary composite section along the wire mesh of another inclined mesh machine. In the secondary composite section, the double-layer fiber layer is transferred to the wire mesh of the composite conveyor through the blowing action of the wind press and the adsorption action of the transfer vacuum adsorption box, thereby forming a three-layer stacked fabric; in step d, the three-layer stacked fabric is fixed by water entanglement through a pre-puncture mechanism; in step e, when the three-layer stacked fabric is transported to the end of the composite conveyor, it is separated from the wire mesh by a pre-stripping mechanism.

[0014] From the above description, it can be seen that the cowhide fiber and substrate composite production line provided by the present invention has the following beneficial effects: in the primary composite section, the fiber layer of one inclined mesh machine is transferred to another inclined mesh machine under the blowing action of the wind press and the adsorption action of the transfer vacuum adsorption box, and is superimposed on the fiber layer on the other inclined mesh machine. The superimposed fiber layer is conveyed to the secondary composite section along the wire mesh of the other inclined mesh machine. In the secondary composite section, the double-layer fiber layer is also transferred to the wire mesh of the composite conveyor through the blowing action of the wind press and the adsorption action of the transfer vacuum adsorption box, thereby forming a three-layer composite section. The fabrics are superimposed, and the fibers and the screen are separated quickly and completely; the winds blown by the opposite wind knives meet in the middle and then spread out, so that the wind blowing towards the screen spreads to the entire area between the two wind knives. By covering the wind pressure of the entire area between the two wind knives, the fibers of the screen are transferred to another screen, reducing the wind pressure received by the local screen, and avoiding the local fibers from being broken due to excessive wind pressure during the transfer process; the pre-spunlace machine preliminarily compounds the two layers of cowhide fiber and the one layer of base material, so that the layers of material of the composite fabric output from the composite production line will not be offset. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic structural diagram of the cowhide fiber and substrate composite production line of the present invention.

[0016] Figure 2 for Figure 1 A magnified schematic diagram of a part.

[0017] Figure 3 for Figure 1 b is a partial enlarged schematic diagram of .

[0018] Figure 4 for Figure 1 A partial enlarged schematic diagram of c.

[0019] Figure 5 for Figure 1 A local enlarged schematic diagram of .

[0020] Figure 6 for Figure 1 A local enlarged schematic diagram of .

[0021] Figure 7 Schematic diagram of the ejector structure. DETAILED DESCRIPTION

[0022] The present invention is further described below through specific embodiments.

[0023] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0024] As shown in the figure, the cowhide fiber and base material composite production line of the present invention includes two inclined screen machines 1 and a composite conveyor 2.

[0025] The cowhide fiber and substrate composite production line of the present invention also includes a fiber transfer mechanism 5. The position where the wire meshes of the two inclined screen machines 1 are superimposed is the primary composite section 3. The position where the wire meshes of the two inclined screen machines 1 and the composite conveyor 2 are superimposed is the secondary composite section 4. Both the primary composite section 3 and the secondary composite section 4 are provided with a fiber transfer mechanism 5.

[0026] The fiber transfer mechanism 5 includes an air press 51 and a transfer vacuum adsorption box 52 . The air press 51 and the transfer vacuum adsorption box 52 are arranged on both sides of the primary composite section 3 and the secondary composite section 4 .

[0027] like Figure 2 and 3The figure shows a schematic diagram of the structure of the fiber transfer mechanism. The air compressor 51 includes two oppositely arranged air knives 511 and a return air plate 512 connecting the two air knives 511. The air outlet directions of the two air knives 511 intersect and point to the primary composite section 3 and the secondary composite section 4. The return air plate 512 is set in the opposite direction of the air outlet direction. Both the inclined screen machine 1 and the composite conveyor 2 are provided with a wire mesh for transferring the fiber layer or substrate. In addition to the structural features described in the present invention, other specific structures such as rollers, wire mesh, homogenizer, inclined screen flow box, forming box, etc. can be referred to the existing equipment. Traditionally, the fiber transfer between wire meshes is mostly done by adsorption using a vacuum adsorption box. However, during the transfer process, since the vacuum adsorption box adsorbs the fiber layer on another inclined screen machine 1 through a layer of wire mesh and a layer of fiber layer, its vacuum adsorption force is weak, which will cause local fibers to not be completely detached from the wire mesh, resulting in incomplete transfer. In the primary composite section 3, the fiber layer of one inclined mesh machine 1 is transferred to another inclined mesh machine 1 under the blowing action of the air press 51 and the adsorption action of the transfer vacuum adsorption box 52, and is superimposed on the fiber layer on the other inclined mesh machine 1. The superimposed fiber layer is transported along the wire mesh of the other inclined mesh machine 1 to the secondary composite section 4. In the secondary composite section 4, the double-layer fiber layer is also transferred to the wire mesh of the composite conveyor 2 through the blowing action of the air press 51 and the adsorption action of the transfer vacuum adsorption box 52, thereby forming a three-layer superimposed fabric. In the present invention, the air press 51 is connected to the air source, and the air is discharged from the air outlet of the air press 51. The specific structure of the vacuum adsorption box refers to the prior art. The front end of the composite conveyor 2 is provided with a base fabric unwinder connected thereto, and the base fabric unwinder transports the base fabric to the composite conveyor 2.

[0028] The angle between the center planes of the air outlets of the two air knives 511 is 130-150 degrees, and the return air plate 512 has a curved surface facing the screen. If a traditional air knife 511 is used to blow directly at the screen, a certain wind pressure must be maintained over a certain range of screens to ensure that the fiber layer can be transferred between different screens. However, since the air outlets of the air knife 511 have a small blowing range, the wind pressure on a certain part of the screen is relatively high, which can easily cause tearing and damage to the fiber layer in that area. In the present invention, the symmetrical center plane between the two opposing wind knives 511 is substantially perpendicular to the screens of the primary composite section 3 and the secondary composite section 4. The wind blown by the opposing wind knives 511 converges in the middle and then diffuses, with a portion blowing toward the screen and the other portion blowing toward the return air plate 512. After being refracted by the return air plate 512, it also diffuses toward the screen, further promoting the uniform diffusion of the airflow between the two wind knives 511 toward the screen, thereby allowing the wind blowing toward the screen to diffuse into the entire area between the two wind knives 511. By covering the entire area between the two wind knives 511 with wind pressure, the fibers of the screen are transferred to the other screen, reducing the wind pressure received by the local screen and preventing the local fibers from being broken during the transfer process due to excessive wind pressure. The arc surface of the return air plate 512 protrudes toward the screens of the primary composite section 3 and the secondary composite section 4, and is used to guide the deflection and uniform diffusion of the wind from the wind knives 511.

[0029] like Figure 4 FIG4 is a schematic diagram of the structure of the pre-needling mechanism 6. The cowhide fiber and substrate composite production line of the present invention also includes a pre-needling mechanism 6, which is arranged on the composite conveyor 2 behind the secondary composite section 4. The pre-needling mechanism 6 is used to hydroentangle the three-layer composite material on the composite conveyor 2.

[0030] The pre-needling mechanism 6 comprises one or more pre-needling hydroentanglement machines 61 and a pre-needling vacuum adsorption box 62. The pre-needling hydroentanglement machines 61 are located above the wire mesh of the composite conveyor 2, while the pre-needling vacuum adsorption box 62 is located below the wire mesh of the composite conveyor 2. The pre-needling hydroentanglement machines 61 perform a preliminary lamination of two layers of cowhide fiber and one layer of substrate, ensuring that the layers of the composite fabric output from the composite production line do not shift. The structures of the pre-needling hydroentanglement machines 61 and the pre-needling vacuum adsorption box 62 refer to the hydroentanglement machines and vacuum adsorption boxes in the prior art and will not be repeated here.

[0031] like Figure 5 Figure 6 is a schematic diagram of the structure of the pre-stripping mechanism 7. The cowhide fiber and substrate composite production line of the present invention further includes a pre-stripping mechanism 7, which is disposed above the screen at the discharge end of the composite conveyor 2. Since the composite fabric has been pre-reinforced by the pre-puncture mechanism 6, it has a certain adhesion to the screen of the composite conveyor 2. If it is not pre-stripped, the composite fabric will not be easily separated from the composite conveyor 2 and then enter the subsequent process.

[0032] The pre-debonding mechanism 7 includes a driving wheel 71, a driven wheel 72, a pre-debonding screen 73, and a pre-debonding vacuum box 74. The pre-debonding screen 73 surrounds the driving wheel 71 and the driven wheel 72, and the pre-debonding vacuum box 74 is located inside the pre-debonding screen 73 between the driving wheel 71 and the driven wheel 72. The driving wheel 71 is driven by a motor, driving the driven wheel 72 and the pre-debonding screen 73 to move. The pre-debonding screen 73 moves at the same speed as the composite conveyor 2. The composite fabric passes between the pre-debonding screen 73 and the screen of the composite conveyor 2. When the composite fabric passes through the pre-debonding vacuum box 74, the vacuum suction force applied by the pre-debonding vacuum box 74 drives the composite fabric to detach from the screen of the composite conveyor 2, facilitating smooth debonding in subsequent processes.

[0033] like Figure 6 Schematic diagram of the structure of the substrate water film covering mechanism 8 . The cowhide fiber and substrate composite production line of the present invention further includes a substrate water film covering mechanism 8 . The substrate water film covering mechanism 8 is located on the composite conveyor 2 in front of the secondary composite section 4 .

[0034] The substrate water film coating mechanism 8 includes, from front to back, a first water absorption vacuum box 81, an ejector 82, a second water absorption vacuum box 83 and a lifting roller 84. The first water absorption vacuum box 81 and the second water absorption vacuum box 83 are connected to a vacuum source. A water baffle is provided above the second water absorption vacuum box 83. The first water absorption vacuum box 81 and the lifting roller 84 are in contact with the bottom of the wire mesh of the composite conveyor 2. The top position of the lifting roller 84 is higher than the top position of the first water absorption vacuum box 81. A pressure roller 75 is provided on the other side of the wire mesh opposite to the first water absorption vacuum box 81. The ejector 82 and the second water absorption vacuum box 83 are located above the wire mesh of the composite conveyor 2. The ejector 82 sprays water at the wire mesh of the composite conveyor 2, and the angle between the spray direction and the wire mesh is 20-50 degrees. The excess water rebounds on the wire mesh and is absorbed by the second water absorption vacuum box 83. Since the top position of the lifting roller 84 is higher than the top of the first water absorption vacuum box 81, the wire mesh from the first water absorption vacuum box 81 to the lifting roller 84 is tilted upward, and the excess water on the fiber surface is left along the base cloth on the wire mesh under the action of gravity and is absorbed by the first water absorption vacuum box 81. When the wire mesh is lifted to the lifting roller 84, the surface of the fiber layer is covered with a layer of water film, which helps the fiber layer in the subsequent secondary composite section 4 to unfold smoothly on the base cloth to avoid local wrinkles.

[0035] like Figure 7The above is a schematic diagram of the structure of the ejector 82. There are multiple cross nozzles evenly distributed along the horizontal direction on the ejector 82. The cross nozzles include nozzles 821 arranged crosswise in the direction of the water outlet. The number of cross nozzles is set according to the width of the web. As shown in the figure, the angle between the central axis plane of the two cross-arranged nozzles 821, that is, the water outlet direction, is 120-16 degrees. The water sprayed from the two nozzles 821 cross-collides and then spreads out. The water can be evenly covered on the base fabric through multiple groups of cross nozzles 821, quickly soaking the base fabric and forming a water film on the surface of the base fabric. The cross-jet 82 is used to spray water on the surface of the fiber. The water spray formed by the cross-jet has a large spray angle, a wide coverage area, and a more uniform spray. If multiple ejectors 82 are arranged in parallel, a large number of ejectors 82 are required, and the water film formed by the ejector 82 directly spraying the screen is too thick. During compounding, the layers of material may be offset, which is not conducive to subsequent compounding.

[0036] The method for using the cowhide fiber and base material composite production line comprises the following steps: step a, two inclined mesh machines 1 respectively form the cowhide fiber layer and convey it through the wire mesh, and the base cloth is conveyed through the composite conveyor 2; step b, the fiber layers formed by the two inclined mesh machines 1 are superimposed on the primary composite section 3, and the fiber layer of one inclined mesh machine 1 is transferred to the other inclined mesh machine 1 under the blowing action of the wind press 51 and the adsorption action of the transfer vacuum adsorption box 52, and is superimposed with the fiber layer on the other inclined mesh machine 1. At the same time, the base cloth on the composite conveyor 2 is conveyed through the base The water film covering mechanism 8 sprays water to moisten the material and form a water film on its surface; in step c, the stacked fiber layers are transported along the wire mesh of another inclined mesh machine 1 to the secondary composite section 4, and in the secondary composite section 4, the double-layer fiber layer is transferred to the wire mesh of the composite conveyor 2 through the blowing action of the wind press 51 and the adsorption action of the transfer vacuum adsorption box 52, thereby forming a three-layer stacked fabric; in step d, the three-layer stacked fabric is fixed by water entanglement through the pre-puncture mechanism 6; in step e, when the three-layer stacked fabric is transported to the end of the composite conveyor 2, it is separated from the wire mesh by the pre-stripping mechanism 7.

[0037] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the present invention. Matters not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0038] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "disposed" should be understood broadly. For example, they may refer to fixed connection or disposition, detachable connection or disposition, or integral connection or disposition. The models of electrical appliances provided in the present invention are for reference only. Those skilled in the art can replace different models of electrical appliances with the same functionality based on actual usage. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0039] The above are only some specific implementation methods of the present invention, but the design concept of the present invention is not limited to this. Any non-substantial changes to the present invention using this concept shall be deemed as an infringement of the protection scope of the present invention.

Claims

1. The production line for composite cowhide fiber and base material includes two inclined screen machines and a composite conveyor, and is characterized by: It also includes a fiber transfer mechanism, the position where the wire meshes of the two inclined mesh machines are superimposed is the primary composite section, the position where the wire meshes of the two inclined mesh machines and the composite conveyor are superimposed is the secondary composite section, the primary composite section and the secondary composite section are both provided with the fiber transfer mechanism, the fiber transfer mechanism includes an air press and a transfer vacuum adsorption box, the air press and the transfer vacuum adsorption box are relatively arranged on both sides of the primary composite section and the secondary composite section, the air press includes two oppositely arranged air knives and a return air plate connecting the two air knives, the air outlet directions of the two air knives intersect and point to the primary composite section and the secondary composite section, and the return air plate is arranged in the opposite direction of the air outlet direction; The angle between the center planes of the air outlets of the two air knives is 130-150 degrees, and the return air plate is an arc surface facing the screen; The cowhide fiber and base material composite production line further includes a pre-stripping mechanism, which is arranged above the wire mesh at the discharge end of the composite conveyor; The pre-demolding mechanism includes a driving wheel, a driven wheel, a pre-demolding screen and a pre-demolding vacuum box. The pre-demolding screen surrounds the driving wheel and the driven wheel, and the pre-demolding vacuum box is located in the pre-demolding screen between the driving wheel and the driven wheel.

2. The cowhide fiber and substrate composite production line according to claim 1, characterized in that: The utility model further comprises a pre-puncturing mechanism, which is arranged on the compounding conveyor behind the secondary compounding section.

3. The cowhide fiber and substrate composite production line according to claim 2, characterized in that: The pre-needling mechanism includes one or more pre-needling water spunlace machines and pre-needling vacuum adsorption boxes. The pre-needling water spunlace machines are located above the wire mesh of the composite conveyor, and the pre-needling vacuum adsorption box is located below the wire mesh of the composite conveyor.

4. The cowhide fiber and substrate composite production line according to claim 1, characterized in that: It also includes a substrate water film coating mechanism, which is located on the composite conveyor in front of the secondary composite section.

5. The cowhide fiber and base material composite production line according to claim 4, characterized in that: The substrate water film coating mechanism includes, from front to back, a first water absorption vacuum box, an ejector, a second water absorption vacuum box and a lifting roller. The first water absorption vacuum box and the lifting roller are in contact with the bottom of the wire mesh of the composite conveyor. The top position of the lifting roller is higher than the top of the first water absorption vacuum box. A pressure roller is provided on the other side of the wire mesh opposite to the first water absorption vacuum box. The ejector and the second water absorption vacuum box are located above the wire mesh of the composite conveyor.

6. The cowhide fiber and base material composite production line according to claim 5, characterized in that: The ejector is evenly distributed with a plurality of cross nozzles along the transverse direction, and the cross nozzles include nozzles arranged crosswise in the direction of the water outlet.

7. The method for using the cowhide fiber and substrate composite production line according to any one of claims 1 to 6, characterized in that: The method comprises the following steps: step a, two inclined mesh machines respectively form cowhide fiber layers and convey them through the wire mesh, and the base cloth is conveyed through the composite conveyor; step b, the fiber layers formed by the two inclined mesh machines are superimposed on the primary composite section, and the fiber layer of one inclined mesh machine is transferred to the other inclined mesh machine under the blowing action of the wind press and the adsorption action of the transfer vacuum adsorption box, and is superimposed with the fiber layer on the other inclined mesh machine. At the same time, the base cloth on the composite conveyor is sprayed with water through the substrate water film mechanism to form a water film on its surface; step c, the superimposed fiber layers are conveyed to the secondary composite section along the wire mesh of another inclined mesh machine, and in the secondary composite section, the double-layer fiber layer is also transferred to the wire mesh of the composite conveyor after the blowing action of the wind press and the adsorption action of the transfer vacuum adsorption box, thereby forming a three-layer superimposed fabric; step d, the three-layer superimposed fabric is fixed by water entanglement through a pre-puncture mechanism; step e, when the three-layer superimposed fabric is conveyed to the end of the composite conveyor, it is separated from the wire mesh through a pre-stripping mechanism.

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