Cattle hide fiber slubbing machine and method of using same

Abstract

The present application relates to the field of cowhide fiber processing equipment, in particular to a cowhide fiber inclined screen machine and a use method thereof, the cowhide fiber inclined screen machine comprises a homogenizer, an inclined screen flow box, a forming box, a cross beam, a pile preventing mechanism, a flattening mechanism and a vacuum water suction mechanism, the pile preventing mechanism comprises a transverse driving unit and a fiber poking piece, the transverse driving unit is transverse to the inside of the inclined screen flow box, and the fiber poking piece moves transversely under the drive of the transverse driving unit. In the process of transverse movement of the fiber poking piece, the fiber moves downward along with the water flow to the silk screen at the bottom and adheres to the cowhide fiber layer formed on the silk screen, which can effectively reduce the blockage at the discharge end of the inclined screen flow box and fully utilize the residual cowhide fiber in the slurry at the processing end; air of the flattening nozzle blows downward through the intermediate flattening air port, the air gradually diffuses from the center to both sides, and finally enters the flattening air suction ports on both sides to smooth the uneven places of the upper edge wrinkles of the cowhide fiber.

Description

Technical Field

[0001] This invention relates to the field of equipment for processing cowhide fibers, specifically to a cowhide fiber inclined wire mesh machine and its usage method. Background Technology

[0002] Cowhide leather refers to leather made from cowhide fibers. It uses cowhide scraps as raw materials, extracting the genuine leather fibers, and then using a special process to form a mesh. This mesh is then processed using a high-pressure hydroentangling method to create a cowhide fiber base fabric. Leather finishing techniques are then applied to this base fabric. The manufacturing process includes: genuine leather scraping – fiber dissection – extraction of collagen fibers – hydroentangling (according to a non-replica process) – forming a genuine leather base – dyeing – impregnation – texturing – sanding and softening – texturing – solvent-free lamination – finished product. The inclined screen machine is used to evenly spread the pulp onto the screen, forming a cowhide fiber layer of a certain thickness. The existing inclined screen machine structure is as follows: the pulp spreader is connected to a multi-layer inclined screen headbox, and an inclined screen vacuum forming box is located below the multi-layer inclined screen headbox. The multi-layer inclined screen headbox and the inclined screen vacuum forming box are fixedly installed below them. The machine has a frame, with a vacuum suction box fixed on top, a pausing roller fixed at the end of the frame, and a drive roller fixed at the rear of the frame. Existing inclined wire mesh machines for producing cowhide fibers have several problems that need to be addressed and improved: at the discharge end of the inclined wire mesh headbox, some cowhide fibers remain at the top of the liquid level. If these suspended cowhide fibers are not treated, they will accumulate, pile up, and clog at the discharge end over time, ultimately affecting the quality of the finished product and normal production. Current treatment methods mostly involve manual cleaning. Inside the inclined wire mesh headbox, the vacuum level of the suction mechanism inside the forming box is often insufficient at the edges, causing the fibers at the edges to wrinkle. If these wrinkles are not smoothed out, they will lead to uneven fabric in subsequent lamination processes. In view of the above problems, this invention was developed. Summary of the Invention

[0003] One object of the present invention is to solve at least the above-mentioned problems by means of a cowhide fiber inclined wire mesh machine.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a cowhide fiber inclined headbox, comprising a homogenizer, an inclined headbox, a forming box, and a crossbeam, wherein the homogenizer is connected to the feed end of the inclined headbox, the inclined headbox and the forming box are fixed on the crossbeam, and the forming box is disposed below the inclined headbox, characterized in that: it further comprises an anti-piling mechanism disposed at the discharge end of the inclined headbox, a leveling mechanism disposed at the rear end of the inclined headbox, and a vacuum dewatering mechanism disposed at the rear end of the leveling mechanism, wherein the anti-piling mechanism comprises a transverse drive unit and a fiber stalk, the transverse drive unit spanning the interior of the inclined headbox, and the fiber stalk moving laterally under the drive of the transverse drive unit.

[0005] Preferably, the transverse drive unit is a lead screw slide.

[0006] Preferably, the fiber paddle includes a connecting rod, a truncated cone, and a pawl. The connecting rod is connected to the transverse drive unit. The truncated cone is fixed below the connecting rod. The two sides of the truncated cone are inwardly inclined drainage slopes. There are two pawls. The pawls are inclined outward and downward. A pawl is fixed below each drainage slope of the truncated cone.

[0007] Preferably, the flow-guiding slope and the connecting surface of the claw of the cone are arc surfaces, the claw includes a plurality of claw fingers arranged at intervals, the cone has an air passage inside, the flow-guiding slope of the cone has an air port communicating with the air passage on the outer side, and the top of the cone has an air pipe communicating with the air passage.

[0008] Preferably, the anti-stacking mechanism further includes a lifting cylinder, which drives the lateral movement drive unit to move up and down.

[0009] Preferably, the leveling mechanism includes a leveling nozzle and a leveling vacuum tube, the leveling nozzle being located above the leveling vacuum tube, and a gap for the wire mesh to pass through is provided between the leveling nozzle and the leveling vacuum tube.

[0010] Preferably, the bottom of the leveling nozzle is an arc surface, the top of the leveling vacuum tube is an arc surface, and an arc-shaped channel is formed between the leveling nozzle and the leveling vacuum tube.

[0011] Preferably, the leveling nozzle has a leveling air inlet in the middle of its bottom, and the leveling vacuum tube has a leveling air extraction port on each side of its top. The two leveling air extraction ports are located on both sides of the leveling air inlet. The longitudinal section of the leveling air inlet is a trapezoid that is narrower at the top and wider at the bottom, and the longitudinal section of the leveling air extraction port is a trapezoid that is wider at the top and wider at the bottom.

[0012] Preferably, it further includes a pre-detachment mechanism disposed at the rear end of the vacuum suction mechanism. The pre-detachment mechanism includes an upper roller, a lower roller, an upper swing arm, a column, and a detachment cylinder. The upper roller is located above the lower roller, and the upper roller and the lower roller rotate in opposite directions with a gap between them for the wire mesh to pass through. The column is fixed on the crossbeam. One end of the upper swing arm is rotatably disposed on the column, and the other end is rotatably connected to the upper roller. The cylinder body of the detachment cylinder is rotatably connected to the column, and the piston rod is rotatably connected to the movable end of the swing arm.

[0013] The above-mentioned method of using the cowhide fiber inclined wire mesh machine is characterized by the following steps:

[0014] Step a: The wire mesh passes through an inclined wire mesh flow box and a forming box, and the fiber slurry adheres to the top of the wire mesh to form a cowhide fiber layer;

[0015] Step b: When the wire mesh passes through the discharge end of the inclined wire mesh headbox, the fibers remaining suspended at the top of the slurry are moved back and forth by the transverse drive unit, which moves the fibers suspended at the top down to the surface of the wire mesh.

[0016] Step c: The mesh passes between the flattening nozzle and the flattening vacuum tube. When the air blown out from the flattening nozzle reaches the flattening air extraction ports on both sides, under the vacuum effect of the flattening vacuum tube, some air and water pass through the mesh and the cowhide fiber into the flattening air extraction ports on both sides. During this process, the air gradually diffuses from the center to both sides and finally enters the flattening air extraction ports on both sides. The simultaneous action of the upper air pressure and the lower vacuum smooths out the wrinkles on the upper edge of the cowhide fiber.

[0017] Step d: The vacuum water absorption mechanism absorbs water from the fibers on the wire mesh;

[0018] Step e: The wire mesh passes through the gap between the upper and lower rollers, and a negative pressure zone is generated in its feeding direction. The negative pressure causes the leather fibers to pre-separate from the wire mesh.

[0019] As described above, the cowhide fiber inclined wire mesh machine provided by the present invention has the following beneficial effects: During the transverse movement of the fiber shears, some fibers and their surface liquid suspended on the surface of the inclined wire mesh headbox are pushed by the fiber shears, causing a local rise in liquid level during the transverse movement. After encountering the guiding slope, the rising liquid level is guided downwards. After being diverted and decelerated by the shear claws, the fibers move downwards with the water flow to the bottom of the wire mesh, where they adhere to the cowhide fiber layer formed on the wire mesh. Subsequently, this part of the suspended fibers is conveyed out of the inclined wire mesh headbox along with the wire mesh, which can effectively reduce the blockage at the discharge end of the inclined wire mesh headbox. The process addresses blockages and fully utilizes the residual cowhide fibers in the slurry at the processing end. Air from the leveling nozzle blows downwards through the central leveling air inlet and diffuses to both sides, causing the cowhide fibers on the mesh to level outwards. When the air from above reaches the leveling air extraction ports on both sides, under the vacuum effect of the leveling vacuum tube, some air and water pass through the mesh and cowhide fibers into the leveling air extraction ports on both sides. During this process, the air gradually diffuses from the center to both sides and finally enters the leveling air extraction ports on both sides. The combined effect of the upper air pressure and the lower vacuum smooths out the uneven areas on the upper edge of the cowhide fibers. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the cowhide fiber inclined wire mesh machine of the present invention.

[0021] Figure 2 This is a schematic diagram of the structure of the anti-stack mechanism.

[0022] Figure 3 Side view of the stacking mechanism.

[0023] Figure 4This is a schematic diagram of the fiber optic swivel.

[0024] Figure 5 This is a schematic diagram of the leveling mechanism.

[0025] Figure 6 This is a side view of the leveling mechanism.

[0026] Figure 7 This is a schematic diagram of the pre-disengagement mechanism. Detailed Implementation

[0027] The present invention will be further described below through specific embodiments.

[0028] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0029] As shown in the figure, the cowhide fiber inclined wire mesh machine of the present invention includes a homogenizer 1, an inclined wire headbox 2, a forming box 3 and a crossbeam 4. The homogenizer 1 is connected to the feed end of the inclined wire headbox 2. The inclined wire headbox 2 and the forming box 3 are fixed on the crossbeam 4, and the forming box 3 is located below the inclined wire headbox 2.

[0030] The cowhide fiber inclined wire mesh machine of the present invention also includes an anti-piling mechanism 5 disposed at the discharge end of the inclined wire mesh headbox 2, a leveling mechanism 6 disposed at the rear end of the inclined wire mesh headbox 2, and a vacuum water suction mechanism 7 disposed at the rear end of the leveling mechanism 6.

[0031] The anti-stacking mechanism 5 includes a lateral drive unit 51 and a fiber chuck 52. The lateral drive unit 51 spans the interior of the inclined headbox 2, and the fiber chuck 52 moves laterally under the drive of the lateral drive unit 51. The lateral drive unit 51 and the slide are fixed above the liquid level in the inclined headbox 2. The upper half of the fiber chuck 52 is above the liquid level, and the lower half is below the liquid level. It moves laterally back and forth under the drive of the lateral drive unit 51. During the lateral movement, the fiber chuck 52 drives the fibers to flow downwards, preventing the fibers from accumulating above the liquid level and causing blockage at the discharge end of the inclined headbox 2.

[0032] The vacuum water absorption mechanism 7 includes a roller and a vacuum water absorption box. The roller is used to support and guide the wire mesh 100, and the vacuum water absorption box is used to absorb water inside the cowhide fibers to make the fibers compact. For the specific structure of the roller and the vacuum water absorption box, please refer to the prior art.

[0033] like Figure 2-4 The transverse drive unit 51 is a lead screw slide. The fiber optic paddle 52 is fixed to the slide of the lead screw slide.

[0034] The fiber ferrule 52 includes a connecting rod 521, a truncated cone 522, and a pawl 523. The connecting rod 521 is connected to the transverse drive unit 51. The truncated cone 522 is fixed below the connecting rod 521. The two sides of the truncated cone 522 are inwardly inclined drainage slopes. Two pawls 523 are provided, and the pawls 523 are inclined outward and downward. A pawl 523 is fixed below each drainage slope of the truncated cone 522. Figure 3 The liquid level is between the cone 522 and the claw 523. During the lateral movement of the fiber ferrule 52, some fibers and their surface liquid suspended on the liquid level surface of the inclined headbox 2 are pushed by the fiber ferrule 52. During the lateral movement, a local liquid level rise is caused. After the rising liquid level encounters the guide slope, it is guided downward. After being diverted and decelerated by the claw 523, the fibers move downward with the water flow to the bottom of the wire mesh 100 and adhere to the cowhide fiber layer formed on the wire mesh 100. Subsequently, this part of the suspended limiter is transported out of the inclined headbox 2 with the wire mesh 100. This can effectively reduce the blockage at the discharge end of the inclined headbox 2 and make full use of the residual cowhide fibers in the slurry at the processing end. Since the proportion of fibers flowing back to the cowhide fiber layer through the fiber paddle 52 is not high, ranging from 1% to 3%, it will not cause significant changes in the thickness and uniformity of the cowhide fiber layer. By controlling the lateral movement speed of the fiber paddle 52, the downward flow speed of the slurry can be controlled. Furthermore, since the cowhide fiber layer at the discharge end has a relatively compact structure under the adsorption of the forming box 3, the flow of the slurry will not impact the already formed cowhide fiber layer.

[0035] The flow-guiding slope of the cone 522 and the connecting surface of the claw 523 are arc surfaces. The claw 523 includes multiple claw fingers arranged at intervals. An air passage 524 is provided inside the cone 522. An air port 525 communicating with the air passage 524 is provided on the outer side of the flow-guiding slope of the cone 522. An air tube communicating with the air passage 524 is provided on the top of the cone 522. The claw fingers are used to reduce and balance the flow velocity of the water. The airflow blown out by the air port 525 drives the fibers floating on the liquid surface to flow downwards at an accelerated speed.

[0036] The anti-stack mechanism 5 also includes a lifting cylinder 53, which drives the lateral drive unit 51 to move up and down. The lifting cylinder is used to adjust the height of the anti-stack mechanism 5.

[0037] like Figure 5 and 6 The leveling mechanism 6 includes a leveling nozzle 61 and a leveling vacuum tube 62. The leveling nozzle 61 is located above the leveling vacuum tube 62, and a gap is provided between the leveling nozzle 61 and the leveling vacuum tube 62 for the wire mesh 100 to pass through. The leveling nozzle 61 sprays air downwards, and the leveling vacuum tube 62 draws a vacuum downwards. The airflow and vacuum level the fibers on the wire mesh 100, especially for the fibers at the edges, effectively making the cowhide fiber layer adhere to the wire mesh 100 and avoiding wrinkles at the edges.

[0038] The bottom of the leveling nozzle 61 is curved, and the top of the leveling vacuum tube 62 is curved, forming an arc-shaped channel between the leveling nozzle 61 and the leveling vacuum tube 62 for the wire mesh 100 to pass through.

[0039] The bottom center of the leveling nozzle 61 is provided with a leveling air port 611, and the top sides of the leveling vacuum tube 62 are each provided with a leveling air extraction port 621. The two leveling air extraction ports 621 are located on both sides of the leveling air port 611. The longitudinal section of the leveling air port 611 is a trapezoid that is narrower at the top and wider at the bottom, and the longitudinal section of the leveling air extraction port 621 is a trapezoid that is wider at the top and wider at the bottom. The mesh 100 passes through the top of the flattening vacuum tube 62, with the sides of the cowhide fiber layer on the mesh 100 located above the flattening air extraction port 621. Air from the flattening nozzle 61 blows downward through the central flattening air port 611 and diffuses to both sides. The sides of the flattening air port 611 are parallel to the sides of the flattening air extraction port 621. The gap between the flattening nozzle 61 and the mesh 100 decreases towards the sides, increasing the air pressure to flatten the cowhide fibers on the mesh 100 outward. When the air from above reaches the flattening air extraction ports 621 on both sides, under the vacuum effect of the flattening vacuum tube 62, some air and water pass through the mesh 100 and the cowhide fibers into the flattening air extraction ports 621 on both sides. During this process, the air gradually diffuses from the center to both sides and finally enters the flattening air extraction ports 621 on both sides. The combined effect of the upper air pressure and the lower vacuum smooths out the wrinkles on the upper edge of the cowhide fibers. Since the moisture content of the cowhide fiber above the wire mesh 100 is still relatively high when it comes out of the inclined headbox 2, and the cowhide fiber has good flexibility and plasticity, it is better to smooth the edge by using the leveling mechanism 6 at this time. Therefore, the leveling mechanism 6 should be set at the discharge point of the inclined headbox 2.

[0040] like Figure 7The cowhide fiber inclined mesh machine also includes a pre-detachment mechanism 8 located at the rear end of the vacuum water absorption mechanism 7. The pre-detachment mechanism 8 includes an upper roller 81, a lower roller 82, an upper swing arm 83, a column 84, and a detachment cylinder 85. The upper roller 81 is located above the lower roller 82. The upper roller 81 and the lower roller 82 rotate in opposite directions, with a gap between them for the wire mesh 100 to pass through. The column 84 is fixed on the crossbeam 4. One end of the upper swing arm 83 is rotatably mounted on the column 84, and the other end is rotatably connected to the upper roller 81. The cylinder body of the detachment cylinder 85 is rotatably connected to the column 84, and the piston rod is rotatably connected to the movable end of the swing arm. The bottom of the wire mesh 100 is conveyed downwards by the lower roller 82. The surface of the upper roller 81 is smooth. During the opposite rotation of the upper roller 81 and the lower roller 82, the air in the material discharge direction is in an outward diffusion state, so a negative pressure zone is generated here. The negative pressure causes the leather fibers to pre-detach from the wire mesh 100. This pre-detachment refers to reducing the adhesion between the leather fibers and the wire mesh 100. Therefore, in the subsequent leather fiber composite process, the leather fibers detach from the mesh in advance and can be smoothly transferred to the substrate. The extension and retraction of the detachment cylinder 85 drives the upper roller 81 to rise and fall, which facilitates the maintenance of the wire mesh.

[0041] The above-mentioned method of using the cowhide fiber inclined wire mesh machine is characterized by the following steps:

[0042] Step a: The wire mesh 100 passes through the inclined wire mesh flow box 2 and the forming box 3, and the fiber slurry adheres to the top of the wire mesh 100 to form a cowhide fiber layer;

[0043] Step b: When the wire mesh 100 passes through the discharge end of the inclined headbox 2, the fibers remaining suspended at the top of the slurry are moved back and forth by the transverse drive unit 51, which drives the fibers suspended at the top to move downward to the surface of the wire mesh 100.

[0044] Step c: The wire mesh 100 passes between the flattening nozzle 61 and the flattening vacuum tube 62. When the air blown out from the flattening nozzle 61 reaches the flattening air extraction ports 621 on both sides, under the vacuum action of the flattening vacuum tube 62, some air and water pass through the wire mesh 100 and the cowhide fiber and enter the flattening air extraction ports 621 on both sides. During this process, the air gradually diffuses from the center to both sides and finally enters the flattening air extraction ports 621 on both sides. The simultaneous action of the upper air pressure and the lower vacuum smooths out the wrinkles on the upper edge of the cowhide fiber.

[0045] Step d: The vacuum water absorption mechanism 7 absorbs water from the fibers on the wire mesh 100;

[0046] Step e: The wire mesh 100 passes through the gap between the upper roller 81 and the lower roller 82, and a negative pressure zone is generated in its feeding direction. The negative pressure causes the leather fibers to pre-separate from the wire mesh 100.

[0047] The above are merely some specific embodiments of the present invention, but the design concept of the present invention is not limited thereto. Any non-substantial modifications made to the present invention using this concept shall be considered as infringing upon the protection scope of the present invention.

Claims

1. A cowhide fiber inclined wire mesh machine, comprising a homogenizer, an inclined wire headbox, a forming box, and a crossbeam, wherein the homogenizer is connected to the feed end of the inclined wire headbox, the inclined wire headbox and the forming box are fixed on the crossbeam, and the forming box is disposed below the inclined wire headbox, characterized in that: It also includes an anti-stacking mechanism located at the discharge end of the inclined wire headbox, a leveling mechanism located at the rear end of the inclined wire headbox, and a vacuum dewatering mechanism located at the rear end of the leveling mechanism. The anti-stacking mechanism includes a transverse drive unit and a fiber chuck. The transverse drive unit spans the interior of the inclined wire headbox. The fiber chuck moves laterally under the drive of the transverse drive unit. The fiber chuck includes a connecting rod, a truncated cone, and pawls. The connecting rod is connected to the transverse drive unit. The truncated cone is fixed below the connecting rod. The two sides of the truncated cone are inwardly inclined drainage slopes. There are two pawls, which slope outwards and downwards. A pawl is fixed below each drainage slope of the truncated cone. The connection surface between the drainage slope of the truncated cone and the pawl is an arc surface. The pawl includes multiple spaced-apart claw fingers. The cone has an internal air passage. An air inlet communicating with the air passage is located on the outer side of the cone's flow-guiding slope. An air pipe communicating with the air passage is located at the top of the cone. The leveling mechanism includes a leveling nozzle and a leveling vacuum tube. The leveling nozzle is located above the leveling vacuum tube. A gap for the wire mesh to pass through is provided between the leveling nozzle and the leveling vacuum tube. The bottom of the leveling nozzle is curved, and the top of the leveling vacuum tube is curved, forming an arc-shaped channel between the leveling nozzle and the leveling vacuum tube. A leveling air inlet is located in the middle of the bottom of the leveling nozzle. A leveling suction port is located on each side of the top of the leveling vacuum tube. The two leveling suction ports are located on opposite sides of the leveling air inlet. The longitudinal section of the leveling air inlet is a trapezoid that is narrower at the top and wider at the bottom, and the longitudinal section of the leveling suction port is a trapezoid that is wider at the top and narrower at the bottom.

2. The cowhide fiber inclined wire mesh machine according to claim 1, characterized in that: The lateral movement drive unit is a lead screw slide.

3. The cowhide fiber inclined wire mesh machine according to claim 1, characterized in that: The anti-stack mechanism also includes a lifting cylinder, which drives the lateral movement drive unit to move up and down.

4. The cowhide fiber inclined wire mesh machine according to claim 1, characterized in that: It also includes a pre-detachment mechanism located at the rear end of the vacuum water absorption mechanism. The pre-detachment mechanism includes an upper roller, a lower roller, an upper swing arm, a column, and a detachment cylinder. The upper roller is located above the lower roller. The upper roller and the lower roller rotate in opposite directions and have a gap between them for the wire mesh to pass through. The column is fixed on the crossbeam. One end of the upper swing arm is rotatably mounted on the column, and the other end is rotatably connected to the upper roller. The cylinder body of the detachment cylinder is rotatably connected to the column, and the piston rod is rotatably connected to the movable end of the swing arm.

5. The method of using the cowhide fiber oblique mesh machine according to any one of claims 1 to 4, characterized in that, Includes the following steps: Step a: The wire mesh passes through an inclined wire mesh flow box and a forming box, and the fiber slurry adheres to the top of the wire mesh to form a cowhide fiber layer; Step b: When the wire mesh passes through the discharge end of the inclined wire mesh headbox, the fibers remaining suspended at the top of the slurry are moved back and forth by the transverse drive unit, which moves the fibers suspended at the top down to the surface of the wire mesh. Step c: The mesh passes between the flattening nozzle and the flattening vacuum tube. When the air blown out from the flattening nozzle reaches the flattening air extraction ports on both sides, under the vacuum effect of the flattening vacuum tube, some air and water pass through the mesh and the cowhide fiber into the flattening air extraction ports on both sides. During this process, the air gradually diffuses from the center to both sides and finally enters the flattening air extraction ports on both sides. The simultaneous action of the upper air pressure and the lower vacuum smooths out the wrinkles on the upper edge of the cowhide fiber. Step d: The vacuum water absorption mechanism absorbs water from the fibers on the wire mesh; Step e: The wire mesh passes through the gap between the upper and lower rollers, and a negative pressure zone is generated in its feeding direction. The negative pressure causes the leather fibers to pre-separate from the wire mesh.

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