Manufacturing method of regenerated leather

Abstract

The invention relates to the technical field of regenerated leather, and provides a regenerated leather manufacturing method which comprises the following steps: S1, recycling and screening; s2, napping and opening are conducted, specifically, the leftover materials meeting the requirements are subjected to napping and opening treatment; s3, preparation of fiber slurry: stirring leather fibers and water to prepare the fiber slurry; s4, spraying slurry to form a net, namely spraying the fiber slurry onto a net roller for adsorbing and hanging the net to form a fiber net; s5, compounding: flatly laying the fiber net on the cloth base; wherein the net roller in the step S4 comprises a roller body and a hanging net, the roller body is hollow, and a plurality of first adsorption holes are formed in the surface of the roller body; a dividing strip is arranged in the roller body and divides the interior of the roller body into a first cavity and a second cavity, the first cavity faces the spraying direction of fiber pulp, and the first cavity is connected with a first negative pressure adsorption part. According to the manufacturing method of the regenerated leather, leather fibers of different specifications can be recycled.

Description

Technical Field

[0001] The present application relates to the technical field of regenerated leather, and in particular to a method for producing regenerated leather. Background Art

[0002] With the continuous progress and innovation of science and technology, the production process of recycled leather is also constantly improving and perfecting. At present, recycled leather has been widely used in many fields such as furniture, bags, clothing, etc., and has become an indispensable part of the leather industry. At the same time, the environmental protection and sustainability of recycled leather have also been recognized and favored by more and more consumers. Collagen fiber recycled leather has been increasingly widely used in the market due to its cheap raw materials and performance close to genuine leather. Especially in the context of the continuous improvement of resource conservation and environmental protection awareness, how to efficiently use leather scraps for recycling has become the focus of the industry.

[0003] In the prior art, in order to realize the production of regenerated leather, the commonly used methods include fragment bonding, fiber bonding and fiber entanglement. Among them, the fiber entanglement is a more advanced method, which uses the collagen fibers obtained after defibration of genuine leather scraps, and then hydroentangles them after opening and laying, so as to form a stable base cloth. Specifically, this method first pre-treats the leather scraps through crushing, opening and other pre-treatment steps to make them into a fine fiber state suitable for further processing. Next, these fibers will be evenly laid into one or more layers of fiber webs, and then high-pressure and high-speed fine water flow will be used to promote the mutual entanglement between the fibers to achieve a reinforcement effect. However, this process has high requirements on fiber length and is mainly suitable for longer leather scrap fibers.

[0004] Although the fiber impalement method performs well in the recycling of long fibers, it still has some shortcomings in practical applications. The existing fiber impalement method is mainly used to process leather scraps with larger specifications and longer lengths, while it is difficult to effectively recycle leather scraps with smaller specifications and shorter lengths. This results in a large amount of short fiber scraps that cannot be effectively utilized, causing resource waste and environmental pollution problems. Therefore, there is an urgent need for a new method that can comprehensively recycle leather fibers of different specifications to improve overall resource utilization and economic benefits. Summary of the invention

[0005] In order to recycle leather fibers of different specifications, the present application provides a method for producing regenerated leather.

[0006] The present application provides a method for producing regenerated leather using the following technical solution: A method for making regenerated leather comprises the following steps: S1, recycling and screening: recycling scraps and screening the recycled scraps; S2, napping and loosening: napping and loosening the scraps that meet the requirements to loosen the leather fibers; S3, preparation of fiber slurry: stirring the leather fibers obtained by napping and loosening with water to obtain fiber slurry; S4, spraying and web forming: spraying the fiber slurry in a jet form on a web roller for adsorption and web hanging to form a fiber web; S5, compounding: laying the fiber web flat on a cloth base and reinforcing it; wherein the web roller in step S4 comprises a roller body and a web hanging arranged on the surface of the roller body, the roller body is hollow, and a plurality of first adsorption holes connected to the inside of the roller body are opened on the surface of the roller body; a dividing strip is arranged in the roller body, the roller body and the dividing strip rotate relatively, the dividing strip divides the inside of the roller body into a first chamber and a second chamber, the first chamber always faces the spraying direction of the fiber slurry, and the first chamber is connected to a first negative pressure adsorption member.

[0007] By adopting the above technical scheme, leather scraps that meet the requirements are brushed and loosened, and then stirred with water for a certain period of time to obtain fiber slurry, which is then sprayed onto the hanging net on the surface of the roller body. During the spraying process, the roller body is driven to rotate and the air in the first chamber is extracted through the first negative pressure adsorption component, so that the first chamber forms a negative pressure to adsorb the leather fibers, so that the leather fibers are adsorbed and hung on the hanging net to form a net, and a fiber net is obtained. As the roller body rotates, the fiber net is transferred to the outside of the second chamber, and the fiber net that loses the adsorption effect can be separated from the hanging net on the surface of the roller body, so that the fiber net can be output and compounded with the cloth base. By making the leather fibers into fiber slurry and spraying the hanging net, the leather fibers with smaller specifications can be recycled and regenerated, so that the overall structure can recycle leather fibers of different specifications, thereby improving the recycling rate of leather scraps.

[0008] Optionally, in step S4, the fiber slurry is sprayed by a spray gun, which is arranged on one side of the roller body and is arranged in plurality along the axial direction of the roller body, and the spraying direction of the spray gun is obliquely upward and toward the hanging net on the surface of the roller body; a conveyor belt for conveying the cloth base is provided at the bottom of the roller body.

[0009] By adopting the above technical solution, the fiber slurry is sprayed by a spray gun, and multiple spray guns are arranged at intervals along the axial direction of the roller body, ensuring that the fiber slurry is evenly distributed on the hanging net on the surface of the roller body, improving the quality and stability of the fiber net. The spray direction of the spray gun is obliquely upward and toward the hanging net on the surface of the roller body, which helps the fiber to be better adsorbed on the hanging net. The conveyor belt at the bottom of the roller body enables the fiber net to be smoothly transferred to the cloth base for compounding, ensuring the continuity and efficiency of the entire process.

[0010] Optionally, the roller body is provided with a mounting frame, both ends of the roller body are rotatably connected to the mounting frame, and the mounting frame is provided with a driving member for driving the roller body to rotate; a blowing pipe is provided in the second chamber, both ends of the blowing pipe are extended along the axial direction of the roller body and connected to the mounting frame; a plurality of blowing holes connected to the interior of the blowing pipe are opened on the peripheral wall of the blowing pipe, and the blowing holes are facing the side of the blowing pipe away from the first chamber.

[0011] By adopting the above technical solution, both ends of the roller body are rotatably connected to the mounting frame, and the mounting frame is provided with a driving member for driving the roller body to rotate, so that the roller body can rotate stably and continuously. At the same time, a blowing pipe is arranged in the second chamber, and a plurality of blowing holes connected to the inside of the blowing pipe are opened on the peripheral wall of the blowing pipe, and these blowing holes are facing the side of the blowing pipe away from the first chamber. This design can help the fiber web to smoothly detach from the hanging net on the surface of the roller body through the airflow provided by the blowing pipe after the fiber web is formed, and prevent the fiber web from being difficult to separate due to excessive adsorption force, thereby ensuring a smooth and efficient production process.

[0012] Optionally, the mounting frame is slidably installed with a separation strip, which is located on the side of the roller body away from the spray gun, and has a third chamber inside the separation strip. The side wall of the separation strip close to the roller body is provided with a plurality of second adsorption holes connected to the third chamber, and the third chamber is connected to a second negative pressure adsorption component; a linkage component is provided between the roller body and the separation strip, and when the roller body rotates, the linkage component forces the separation strip to move back and forth so as to intermittently approach or move away from the roller body.

[0013] By adopting the above technical solution, the separation strip can intermittently approach or move away from the roller body during the rotation of the roller body. When the separation strip approaches the roller body, the second adsorption hole generates negative pressure to adsorb the fiber web. When the separation strip moves away from the roller body, the fiber web can be taken away from the roller body to prevent the fiber web from being difficult to separate due to excessive adsorption force, thereby ensuring a smooth and efficient production process. After the separation strip takes the fiber web away from the roller body, the second negative pressure adsorption component is closed, so that the fiber web can fall onto the conveyor belt and be compounded with the cloth base.

[0014] Optionally, a sliding groove is provided on the side wall of the mounting frame, a sliding block is slidably installed in the sliding groove, the separation strip is connected to the sliding block, the separation strip is slidably installed on the mounting frame through the sliding block, and a driving gear ring is coaxially provided on the outer peripheral wall of the roller body; the linkage assembly includes a linkage disk, a linkage rod and a linkage gear, the linkage disk is rotatably installed on the side wall of the mounting frame, one end of the linkage rod is hinged to the surface of the linkage disk, and the other end is hinged to the separation strip; the linkage gear is coaxially arranged on the linkage disk, and the linkage gear and the driving gear ring are meshed for transmission.

[0015] By adopting the above technical solution, when the roller rotates, the driving gear ring drives the linkage gear to rotate, and then drives the linkage disk and the linkage rod to move, and finally the sliding block moves back and forth along the sliding groove, so that the separation strip can intermittently approach or move away from the roller. This design allows the separation strip to intermittently pull the fiber web away from the hanging web on the surface of the roller during the continuous rotation of the roller to transport the fiber web, reducing the possibility that the fiber web is difficult to separate due to excessive adsorption force, and improving the stability of the overall structure.

[0016] Optionally, a plurality of docking rods are provided on the surface of the linkage disk, and the plurality of docking rods are arranged at intervals along the radial direction of the linkage disk; a docking sleeve is provided at one end of the linkage rod away from the separation strip, and the docking sleeve has a docking groove for inserting the docking rod; the docking sleeve is provided with a docking assembly, and the docking sleeve and the docking rod are detachably connected through the docking assembly.

[0017] By adopting the above-mentioned technical solution and the setting of the docking sleeve and the docking assembly, the linkage rod can be conveniently connected to different docking rods, thereby realizing the adjustment of different positions of the separation strip to adjust the minimum distance between the separation strip and the surface of the roller body. The minimum distance is adjusted according to the thickness of the fiber web, thereby improving the flexibility and adaptability of the equipment.

[0018] Optionally, the outer wall of the docking sleeve is provided with a docking hole connected to the docking groove, and the outer peripheral wall of the docking rod is provided with a clamping groove; the docking assembly includes a limit sleeve, a return spring and a limit ball, the limit sleeve sliding sleeve is arranged on the outer peripheral wall of the docking sleeve, the return spring is installed between the limit sleeve and the docking sleeve, and the return spring forces the limit sleeve to cover the docking hole; the limit ball is embedded in the docking hole, and when the docking rod is inserted into the docking groove and the limit sleeve covers the docking hole, the limit sleeve pushes the limit ball to partially embed into the clamping groove.

[0019] By adopting the above-mentioned technical solution, the limit sleeve covers the docking hole under the action of the return spring, so that the limit ball can be pushed into the clamping groove when the docking rod is inserted into the docking groove, thereby achieving a firm locking of the docking sleeve and the docking rod; when disassembling, it is only necessary to pull the limit sleeve to force the limit sleeve to avoid the docking hole, and then pull it out, thereby improving the convenience of disassembly and assembly between the docking sleeve and the docking rod.

[0020] Optionally, the mounting frame is provided with an adsorption seat, the adsorption seat has an adsorption cavity, the second negative pressure adsorption member is arranged on the adsorption seat to extract the air in the adsorption cavity; a suction hole connected to the third chamber is provided at one end of the separation strip close to the adsorption seat, and a suction groove connected to the adsorption cavity is provided on the side wall of the adsorption seat close to the separation strip, the suction groove is opposite to the sliding groove, and both ends of the suction groove are extended along the length direction of the sliding groove; the sliding groove has a first point position and a second point position, the second point position is located on the side of the first point away from the roller body, when the sliding block is displaced to the first point position, the suction hole is connected to the suction groove, and when the sliding block is displaced to the second point position, a misalignment is formed between the suction hole and the suction groove.

[0021] By adopting the above technical solution, through the setting of the suction groove, the first point and the second point, the separation strip can generate adsorption force when it contacts the fiber web, thereby effectively peeling the fiber web from the mesh roller, reducing the possibility that the fiber web is difficult to separate from the mesh roller due to excessive adsorption force, and ensuring the stability of the overall structure. At the same time, when the sliding block moves toward the second point (the fiber web has been peeled off at this time), a misalignment is formed between the suction hole and the suction groove, that is, the separation strip loses its adsorption effect on the fiber web, so that the separation strip can be separated from the fiber web, ensuring the smooth transfer and flat laying of the fiber web, and further improving the stability and consistency of the product.

[0022] Optionally, the separation strip is provided with a rotating rod, which is rotatably installed on the sliding block, and the separation strip is rotatably installed on the sliding block via the rotating rod; a flip gear is coaxially fixed to the outer peripheral wall of the rotating rod, and a flip rack is installed on the side wall of the mounting frame, and both ends of the flip rack are extended along the length direction of the sliding groove, and the flip rack and the flip gear are meshed for transmission; when the sliding block is displaced to a first point position, the second adsorption hole of the separation strip is rotated to face the roller body, and when the sliding block is displaced from the first point position to the second point position, the rotation direction of the separation strip is set opposite to the rotation direction of the roller body.

[0023] By adopting the above technical solution, the second adsorption hole on the separation strip can be rotated to face the roller body under the action of the flip gear and the flip rack when the sliding block moves to the first point, thereby effectively adsorbing the fiber web. When the sliding block drives the separation strip to move from the first point to the second point, the separation strip rotates under the action of the flip gear and the flip rack, thereby improving the separation effect between the separation strip and the fiber web. In addition, when the sliding block moves from the first point to the second point, the rotation direction of the separation strip is set opposite to the rotation direction of the roller body, and the separation strip can rotate along the conveying direction of the fiber web, thereby improving the conveying effect of the fiber web and reducing the possibility of folding of the fiber web due to the rotation of the separation strip.

[0024] Optionally, a translation seat is provided on the side of the mounting frame close to the spray gun, and a plurality of translation blocks are slidably installed in the translation seat. The plurality of translation blocks are arranged corresponding to the plurality of spray guns, and each of the spray guns is installed on the corresponding translation block. The spray gun is slidably installed on the translation seat through the translation block; a translation member is provided between the translation seat and the roller body, and when the roller body rotates, the translation member drives the translation block to move back and forth along the axial direction of the roller body.

[0025] By adopting the above-mentioned technical solution, through the arrangement of the translation seat, the translation block and the translation member, the spray gun can reciprocate along the axial direction of the roller body during the rotation of the roller body, thereby further improving the uniformity of the fiber slurry sprayed onto the mesh roller, improving the uniformity and quality of the fiber web, and thus improving the product performance of the final recycled leather.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. Through the setting of the roller body and the hanging net, the leather scraps that meet the requirements are brushed and loosened, and then stirred with water for a certain period of time to obtain fiber slurry, and then the fiber slurry is sprayed onto the hanging net on the surface of the roller body. During the spraying process, the roller body is driven to rotate and the air in the first chamber is extracted through the first negative pressure adsorption component, so that the first chamber forms a negative pressure to adsorb the leather fibers, so that the leather fibers are adsorbed and hung on the hanging net to form a net, and a fiber net is obtained. With the rotation of the roller body, after the fiber net is transferred to the outside of the second chamber, the fiber net that loses the adsorption effect can be separated from the hanging net on the surface of the roller body, so that the fiber net can be output and compounded with the cloth base. By making the leather fibers into fiber slurry and spraying the hanging net, the leather fibers with smaller specifications can be recycled and regenerated, so that the overall structure can recycle leather fibers of different specifications, thereby improving the recycling rate of leather scraps; 2. Through the setting of the separation strip, the separation strip can intermittently approach or move away from the roller body during the rotation of the roller body. When the separation strip approaches the roller body, the second adsorption hole generates negative pressure to adsorb the fiber web. When the separation strip moves away from the roller body, the fiber web can be taken away from the roller body to prevent the fiber web from being difficult to separate due to excessive adsorption force, thereby ensuring a smooth and efficient production process. After the separation strip takes the fiber web away from the roller body, the second negative pressure adsorption component is closed, so that the fiber web can fall onto the conveyor belt and compound with the cloth base; 3. Through the setting of the limit sleeve, the return spring and the limit ball, the limit sleeve covers the docking hole under the action of the return spring, so that the limit ball can be pushed into the clamping groove when the docking rod is inserted into the docking groove, thereby realizing the firm locking of the docking sleeve and the docking rod; when disassembling, it is only necessary to pull the limit sleeve to force the limit sleeve to avoid the docking hole, and then pull it out, thereby improving the convenience of disassembly and assembly between the docking sleeve and the docking rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1is the overall flow chart of Example 1; Figure 2 is a schematic diagram of the overall structure of Example 1; Figure 3 This is a schematic diagram of the structure of the roller body and the hanging screen in Example 1; Figure 4 is a partial cross-sectional view of the first cavity and the second cavity of embodiment 1; Figure 5 is a partial cross-sectional view of the air blowing pipe according to Embodiment 2; Figure 6 is a partial cross-sectional view of a separation strip according to Embodiment 3; Figure 7 is a partial cross-sectional view of the adsorption seat embodied in Example 3; Figure 8 yes Figure 6 The enlarged view of point A in the middle; Fig. 9 is a partial cross-sectional view of a mounting rod embodying embodiment 4; Fig.10 is a partial cross-sectional view of a docking assembly according to Embodiment 4; Fig.11 is a partial cross-sectional view of the flip gear and the flip rack embodied in Embodiment 5; Fig.12 It is a schematic diagram of the structure of the rotating shaft according to Example 6.

[0028] Description of reference numerals: 1. roller body; 11. first adsorption hole; 12. partition bar; 13. first chamber; 14. second chamber; 15. drive gear ring; 16. first adsorption tube; 17. protective cover; 2. hanging net; 3. spray gun; 31. conveying tube; 4. conveyor belt; 5. mounting frame; 51. driving member; 511. driving motor; 512. driving gear; 52. blowing tube; 521. blowing hole; 53. sliding groove; 531. first point; 532. second point; 54. sliding block; 541. connecting hole; 542. shielding bar; 55. adsorption seat; 551. adsorption chamber; 552. suction groove; 553. second adsorption tube; 5 6. Flip rack; 57. Translation seat; 571. Translation block; 572. Translation groove; 58. Embedded ring groove; 59. Rotating ring; 591. Transition gear; 6. Separation strip; 61. Third chamber; 62. Second adsorption hole; 63. Suction hole; 64. Rotating rod; 641. Flip gear; 65. Mounting rod; 7. Linkage assembly; 71. Linkage disk; 711. Docking rod; 712. Card groove; 72. Linkage rod; 721. Docking sleeve; 722. Docking groove; 723. Docking hole; 73. Linkage gear; 8. Docking assembly; 81. Limit sleeve; 82. Reset spring; 83. Limit ball; 9. Rotating shaft; 91. Reciprocating screw. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1 -Attached Fig.12 This application is described in further detail.

[0030] Embodiment 1: The embodiment of the present application discloses a method for producing regenerated leather.

[0031] Reference Figure 1 , a method for producing regenerated leather, comprising the following steps: S1. Recycling and screening: a. Recycling animal leather scraps and crushing them; b. Screening animal leather scraps. Screening is to sort the color of animal leather scraps. The screening method can be carried out using visual detection instruments.

[0032] S2. Brushing and opening: The animal leather scraps that meet the requirements are brushed and opened to loosen the leather fibers and prepare for subsequent processing. Opening can separate the leather fiber bundles into smaller fiber bundles or individual fibers through mechanical actions such as beating and tearing.

[0033] S3. Preparation of fiber slurry: The leather fibers obtained by napping and opening are stirred with water in a weight ratio of 1:1, and stirred for more than 60 minutes at room temperature to obtain leather fiber slurry.

[0034] S4, spraying mesh: spraying the prepared fiber slurry onto a mesh roller in a jet form for adsorption and meshing to form a fiber mesh.

[0035] S5. Composite: Lay the fiber web flat on the cloth base, and reinforce it through hydroentanglement so that the fiber web and the fibers of the cloth base can be interwoven and entangled to obtain a regenerated leather blank; the cloth base is preferably a weft-knitted cloth. In other embodiments, high-pressure airflow can also be used for needle-punching reinforcement between the fiber web and the cloth base.

[0036] Reference Figure 2 , Figure 3 The mesh roller in step S4 includes a roller body 1 and a mesh 2. In this embodiment, the roller body 1 is hollow and connected to a mounting frame 5. The mounting frame 5 has two opposite side walls with embedded annular grooves 58. Two ends of the roller body 1 are respectively embedded in two embedded annular grooves 58. The roller body 1 is rotatably mounted on the mounting frame 5 through the embedded annular grooves 58. The mesh 2 is fixedly mounted on the outer peripheral wall of the roller body 1, and the mesh 2 can be connected to the roller body 1 by welding.

[0037] Reference Figure 2 , Figure 3In step S4, the fiber slurry is sprayed through the spray gun 3. In this embodiment, a mounting bar is fixedly installed on one side of the mounting frame 5, and the spray gun 3 is fixedly installed on the mounting bar. A plurality of spray guns 3 are arranged at intervals along the axial direction of the roller body 1. The spraying direction of the spray gun 3 is obliquely upward and toward the hanging net 2 on the surface of the roller body 1. Each spray gun 3 is connected to a conveying pipe 31 for conveying the fiber slurry.

[0038] Reference Figure 3 , Figure 4 The mounting frame 5 is provided with a driving member 51 for driving the roller body 1 to rotate around its own central axis. The driving member 51 includes a driving motor 511 and a driving gear 512. The driving gear 512 is rotatably mounted on the side wall of the mounting frame 5. The driving motor 511 is fixedly mounted on the side wall of the mounting frame 5. The output shaft of the driving motor 511 is coaxially fixed to the driving gear 512. A driving ring gear 15 is coaxially fixed to the outer peripheral wall of the roller body 1. The driving ring gear 15 and the driving gear 512 are meshed for transmission.

[0039] Reference Figure 3 , Figure 4 The outer surface of the roller body 1 is provided with a plurality of first adsorption holes 11 connected to the inside of the roller body 1, and the plurality of first adsorption holes 11 are evenly distributed along the outer surface of the roller body 1; a dividing strip 12 is arranged inside the roller body 1, and both ends of the dividing strip 12 are extended along the length direction of the roller body 1, and both ends of the dividing strip 12 are fixedly mounted on the side walls of the mounting frame 5 (that is, the dividing strip 12 cannot rotate with the roller body 1), and the dividing strip 12 divides the inside of the roller body 1 into a first chamber 13 and a second chamber 14, and the first chamber 13 faces the injection direction of the fiber slurry (that is, the first chamber 13 is located on the side of the second chamber 14 close to the spray gun 3).

[0040] The first chamber 13 is connected to a first negative pressure adsorption component, which is configured as a first adsorption tube 16. The first adsorption tube 16 is installed on the side wall of the mounting frame 5. The inlet end of the first adsorption tube 16 is connected to the first chamber 13, and the outlet end of the first adsorption tube 16 is used to connect a vacuum device (not shown in the figure). The vacuum device may be a vacuum pump.

[0041] Reference Figure 3 , Figure 4 In step S5, the cloth base is conveyed by a conveyor belt 4, which is installed at the bottom of the roller body 1; the mounting frame 5 is equipped with a protective cover 17, which is arranged on the outside of the roller body 1, and the bottom of the protective cover 17 is open to allow the fiber slurry to be sprayed in and the fiber web to be output.

[0042] The implementation principle of Example 1 of the present application is as follows: after the leather scraps that meet the requirements are brushed and loosened, they are stirred with water for a certain period of time to obtain fiber slurry, and then the fiber slurry is sprayed onto the hanging net 2 on the surface of the roller body 1. During the spraying process, the roller body 1 is driven to rotate and the air in the first chamber 13 is extracted through the first negative pressure adsorption member, so that the first chamber 13 forms a negative pressure to adsorb the leather fibers, so that the leather fibers are adsorbed and hung on the hanging net 2 to form a net, and a fiber net is obtained. As the roller body 1 rotates, after the fiber net is transferred to the outside of the second chamber 14, the fiber net that loses the adsorption effect can be separated from the hanging net 2 on the surface of the roller body 1, so that the fiber net can be output and compounded with the cloth base. By making the leather fibers into fiber slurry and spraying the hanging net, the leather fibers with smaller specifications can be recycled and regenerated, so that the overall structure can recycle leather fibers of different specifications, thereby improving the recycling rate of leather scraps.

[0043] Embodiment 2: The embodiment of the present application discloses a method for producing regenerated leather.

[0044] The difference between the method for making regenerated leather disclosed in the embodiment of the present application and embodiment 1 is that: Reference Figure 5 In this embodiment, a blowing pipe 52 is provided in the second chamber 14, and both ends of the blowing pipe 52 are extended along the length direction of the roller body 1. Both ends of the blowing pipe 52 are fixedly installed on the side wall of the mounting frame 5. One end of the blowing pipe 52 passes through the mounting frame 5 and is connected to a blowing device (not shown in the figure), which can be a hair dryer.

[0045] The peripheral wall of the air blowing pipe 52 is provided with a plurality of air blowing holes 521 communicating with the interior of the air blowing pipe 52 . The plurality of air blowing holes 521 are arranged at intervals along the length direction of the air blowing pipe 52 , and all the air blowing holes 521 face the side of the air blowing pipe 52 away from the first chamber 13 .

[0046] The implementation principle of the embodiment 2 of the present application is as follows: an air blowing pipe 52 is arranged in the second chamber 14, and a plurality of air blowing holes 521 are opened on the peripheral wall of the air blowing pipe 52 to communicate with the inside of the air blowing pipe 52, and these air blowing holes 521 face the side of the air blowing pipe 52 away from the first chamber 13. After the fiber web rotates to the outside of the second chamber 14, the airflow provided by the air blowing pipe 52 helps the fiber web to smoothly separate from the hanging net 2 on the surface of the roller body 1, preventing the fiber web from being difficult to separate due to excessive adsorption force, reducing the possibility of the fiber web being wound in a circle on the outside of the roller body 1, and allowing the fiber web to smoothly fall onto the cloth base of the conveyor belt 4, thereby ensuring a smooth and efficient production process.

[0047] Embodiment 3: The embodiment of the present application discloses a method for producing regenerated leather.

[0048] The difference between the method for making regenerated leather disclosed in the embodiment of the present application and embodiment 2 is that: Reference Figure 6 , Figure 7 In this embodiment, the mounting frame 5 is installed with a separation strip 6, which is located on the side of the roller body 1 away from the spray gun 3, and the two ends of the separation strip 6 are extended along the length direction of the roller body 1. A third chamber 61 is opened in the separation strip 6, and a plurality of second adsorption holes 62 connected to the third chamber 61 are opened on the side wall of the separation strip 6 close to the roller body 1, and the plurality of second adsorption holes 62 are arranged at intervals along the length direction of the separation strip 6; the third chamber 61 is connected to the second negative pressure adsorption member, and a linkage component 7 is arranged between the roller body 1 and the separation strip 6. When the roller body 1 rotates, the linkage component 7 forces the separation strip 6 to move back and forth to intermittently approach or move away from the roller body 1.

[0049] Reference Figure 7 , Figure 8 , sliding grooves 53 are provided on two opposite side walls of the mounting frame 5, and sliding blocks 54 are slidably installed in the sliding grooves 53. In this embodiment, the two ends of the separation strip 6 are respectively fixedly connected to the sliding blocks 54 of the two sliding grooves 53, and the separation strip 6 is slidably installed on the mounting frame 5 through the sliding blocks 54; the linkage assembly 7 includes a linkage disk 71, a linkage rod 72 and a linkage gear 73. The linkage disk 71 is rotatably installed on the side wall of the mounting frame 5, one end of the linkage rod 72 is hinged to the surface of the linkage disk 71, and the other end is hinged to the side wall of the separation strip 6 away from the roller body 1.

[0050] The linkage gear 73 is coaxially fixed to the outer peripheral wall of the linkage disk 71, and a rotating ring 59 is rotatably installed on the side wall of the mounting frame 5. The rotating ring 59 is located between the linkage gear 73 and the driving gear ring 15 of the roller body 1, and the rotating ring 59 is surrounded by the sliding groove 53 of the mounting frame 5; the outer peripheral wall of the rotating ring 59 is coaxially fixed to the transition gear 591, and the transition gear 591 and the driving gear ring 15, as well as the transition gear 591 and the linkage gear 73 are all meshed for transmission, so that the linkage gear 73 and the driving gear ring 15 are meshed for transmission; with such a design, on the one hand, the rotating ring 59 provides a mounting carrier for the transition gear 591, and on the second hand, the setting of the rotating ring 59 provides an avoidance space for the sliding of the separation bar 6.

[0051] Reference Figure 7 , Figure 8The side wall of the mounting frame 5 is fixedly mounted with an adsorption seat 55, and the adsorption seat 55 has an adsorption chamber 551. The second negative pressure adsorption member is arranged on the adsorption seat 55 to extract the air in the adsorption chamber 551. The second negative pressure adsorption member is arranged as a second adsorption tube 553. The inlet end of the second adsorption tube 553 is connected to the adsorption chamber 551, and the outlet end of the second adsorption tube 553 is used to connect the vacuum device (not shown in the figure). The end of the separation strip 6 close to the adsorption seat 55 is provided with a suction hole 63 connected to the third chamber 61. The side wall of the sliding block 54 close to the separation strip 6 is provided with a connecting hole 541 connected to the suction hole 63. The side wall of the adsorption seat 55 close to the separation strip 6 is provided with a suction groove 552 connected to the adsorption chamber 551. The suction groove 552 is opposite to the sliding groove 53, and the two ends of the suction groove 552 are extended along the length direction of the sliding groove 53. In this embodiment, the length of the suction groove 552 is less than the length of the sliding groove 53.

[0052] Reference Figure 7 The sliding groove 53 has a first point position 531 and a second point position 532. The second point position 532 is located on the side of the first point position 531 away from the roller body 1. When the sliding block 54 moves to the first point position 531, the suction hole 63 is connected to the suction groove 552 through the connecting hole 541. A shielding strip 542 is installed on the side wall of the sliding block 54. When the sliding block 54 moves to the second point position 532, the suction hole 63 and the suction groove 552 are misaligned, and the shielding strip 542 shields the suction groove 552.

[0053] The implementation principle of Example 3 of the present application is as follows: the separation strip 6 can intermittently approach or move away from the roller body 1 during the rotation of the roller body 1. When the separation strip 6 approaches the roller body 1 (i.e. when the sliding block 54 moves to the first point 531), the suction hole 63 is connected to the suction groove 552, and the second adsorption tube 553 can extract the air in the third chamber 61, so that a negative pressure is formed in the third chamber 61 to adsorb the fiber web on the surface of the roller body 1. When the separation strip 6 moves away from the roller body 1 (i.e. when the sliding block 54 moves toward the second point 532), the fiber web can be taken away from the hanging net 2 of the roller body 1 to prevent the fiber web from being difficult to separate due to excessive adsorption force, thereby ensuring a smooth and efficient production process.

[0054] When the sliding block 54 moves to the second point 532 (at this time the fiber web has been peeled off), a misalignment is formed between the suction hole 63 and the suction groove 552, that is, the separation strip 6 loses its adsorption effect on the fiber web, so that the separation strip 6 can be separated from the fiber web, ensuring the smooth transfer and smooth laying of the fiber web, further improving the stability and consistency of the product.

[0055] Embodiment 4: The embodiment of the present application discloses a method for producing regenerated leather.

[0056] The difference between the method for making regenerated leather disclosed in the embodiment of the present application and embodiment 3 is that: Reference Fig. 9 , Fig.10 In this embodiment, a mounting rod 65 is fixedly installed on the side wall of the separation strip 6 away from the roller body 1. Both ends of the mounting rod 65 are extended along the length direction of the separation strip 6. The mounting rod 65 is inserted into one end of the linkage rod 72 close to the roller body 1. The linkage rod 72 is rotated and slidably installed on the separation strip 6 through the mounting rod 65 (the linkage rod 72 can rotate around the central axis of the mounting rod 65 and can also slide along the length direction of the mounting rod 65). A plurality of docking rods 711 are fixedly installed on the surface of the linkage disk 71. The plurality of docking rods 711 are arranged at intervals along the radial direction of the linkage disk 71. A docking sleeve 721 is rotatably installed on one end of the linkage rod 72 away from the separation strip 6. The docking sleeve 721 has a docking groove 722 for the docking rod 711 to be inserted. The docking sleeve 721 is provided with a docking assembly 8. The docking sleeve 721 and the docking rod 711 are detachably connected through the docking assembly 8.

[0057] Reference Fig.10 The outer wall of the docking sleeve 721 is provided with a plurality of docking holes 723 connected to the docking grooves 722, and the plurality of docking holes 723 are arranged at intervals around the central axis of the docking sleeve 721. The outer peripheral wall of the docking rod 711 is provided with a clamping groove 712, and the clamping groove 712 is annular around the central axis of the docking rod 711; the docking assembly 8 includes a limit sleeve 81, a return spring 82 and a limit ball 83, the limit sleeve 81 is slidably sleeved on the outer peripheral wall of the docking sleeve 721, the return spring 82 is sleeved on the outer peripheral side of the docking sleeve 721, one end of the return spring 82 is fixedly connected to the limit sleeve 81, and the other end is fixedly connected to the docking sleeve 721, and the return spring 82 forces the limit sleeve 81 to cover all the docking holes 723.

[0058] There are multiple limiting balls 83 and they are corresponding to the multiple docking holes 723. Each limiting ball 83 is embedded in the corresponding docking hole 723. When the docking rod 711 is inserted into the docking groove 722 and the limiting sleeve 81 covers the docking hole 723, the limiting sleeve 81 pushes the limiting ball 83 to partially embed into the clamping groove 712. It should be noted that in this embodiment, both end openings of the docking hole 723 are equipped with anti-slip rings (as shown in the figure). The inner diameter of the anti-slip ring is smaller than the outer diameter of the limiting ball 83. The anti-slip ring is used to limit the limiting ball 83 to reduce the possibility of the limiting ball 83 completely detaching from the docking hole 723.

[0059] The implementation principle of Example 4 of the present application is: by setting up multiple docking rods 711 and connecting the docking sleeve 721 with different docking rods 711, the minimum distance between the separation strip 6 and the surface of the roller body 1 can be adjusted (the minimum distance is determined according to the thickness of the fiber web. When the spray speed of the spray gun 3 is fixed, the thickness of the fiber web is determined by the rotation speed of the roller body 1), thereby improving the adsorption effect of the separation strip 6 on the fiber web and improving the flexibility and adaptability of the equipment.

[0060] The limiting sleeve 81 covers the docking hole 723 under the action of the return spring 82, so that the limiting ball 83 can be pushed into the locking groove 712 when the docking rod 711 is inserted into the docking groove 722, thereby achieving a firm locking of the docking sleeve 721 and the docking rod 711; when disassembling, it is only necessary to pull the limiting sleeve 81 to force the limiting sleeve 81 to avoid the docking hole 723, and then pull it out, thereby improving the convenience of disassembly and assembly between the docking sleeve 721 and the docking rod 711.

[0061] Embodiment 5: The embodiment of the present application discloses a method for producing regenerated leather.

[0062] The difference between the method for making regenerated leather disclosed in the embodiment of the present application and embodiment 3 is that: Reference Fig.11 , in this embodiment, a rotating rod 64 is fixedly installed on the side wall of the separation strip 6 close to the sliding block 54, and the rotating rod 64 is rotatably installed in the connecting hole 541 of the sliding block 54. The separation strip 6 is rotatably installed on the sliding block 54 through the rotating rod 64, and the suction hole 63 of the separation strip 6 passes through the end surface of the rotating rod 64 away from the separation strip 6; a flip gear 641 is coaxially fixed to the outer peripheral wall of the rotating rod 64, and a flip rack 56 is installed on the side wall of the mounting frame 5. The flip rack 56 is located above the flip gear 641, and the two ends of the flip rack 56 are extended along the length direction of the sliding groove 53, and the flip rack 56 and the flip gear 641 are meshed for transmission; when the sliding block 54 is displaced to the first point position 531, the second adsorption hole 62 of the separation strip 6 is rotated to face the roller body 1, and when the sliding block 54 is displaced from the first point position 531 to the second point position 532, the rotation direction of the separation strip 6 is opposite to the rotation direction of the roller body 1.

[0063] The implementation principle of Example 5 of the present application is as follows: when the sliding block 54 moves to the first point 531, the second adsorption hole 62 on the separation strip 6 can be rotated to face the roller body 1 under the action of the flip gear 641 and the flip rack 56, thereby effectively adsorbing the fiber web. When the sliding block 54 drives the separation strip 6 to move from the first point 531 to the second point 532, the separation strip 6 rotates under the action of the flip gear 641 and the flip rack 56, thereby improving the separation effect between the separation strip 6 and the fiber web. Moreover, when the sliding block 54 moves from the first point 531 to the second point 532, the rotation direction of the separation strip 6 is set opposite to the rotation direction of the roller body 1, and the separation strip 6 can rotate along the conveying direction of the fiber web, thereby improving the conveying effect of the fiber web and reducing the possibility of folding of the fiber web due to the rotation of the separation strip 6.

[0064] Embodiment 6: The embodiment of the present application discloses a method for producing regenerated leather.

[0065] The difference between the method for making regenerated leather disclosed in the embodiment of the present application and embodiment 1 is that: Reference Fig.12 In this embodiment, a translation seat 57 is fixedly installed on one side of the mounting frame 5 close to the spray gun 3. The translation seat 57 is provided with a translation groove 572. A plurality of translation blocks 571 are slidably installed in the translation groove 572. The plurality of translation blocks 571 are arranged corresponding to the plurality of spray guns 3. Each spray gun 3 is installed on a corresponding translation block 571. The spray gun 3 is slidably installed on the translation seat 57 through the translation block 571. A translation member is provided between the translation seat 57 and the roller body 1. When the roller body 1 rotates, the translation member drives the translation block 571 to move back and forth along the axial direction of the roller body 1.

[0066] The translation member is configured as a rotating shaft 9, which is rotatably installed on the translation seat 57, and the length direction of the rotating shaft 9 is consistent with the length direction of the roller body 1; in this embodiment, the rotating shaft 9 is assembled from a plurality of reciprocating screws 91, and the plurality of reciprocating screws 91 are correspondingly arranged with a plurality of translation blocks 571, and each reciprocating screw 91 is penetrated through the corresponding translation block 571 and is threadedly connected with the corresponding translation block 571; a plurality of reciprocating screws 91 are assembled by welding to form a long strip of rotating shaft 9, and the rotating shaft 9 and the roller body 1 are connected by a belt (embodied in the figure), so that when the roller body 1 rotates, the rotating shaft 9 can rotate synchronously, thereby driving the translation block 571 to reciprocate along the length direction of the reciprocating screw 91.

[0067] The implementation principle of Example 6 of the present application is: through the setting of the translation seat 57, the translation block 571 and the rotating shaft 9, the spray gun 3 can reciprocate along the axial direction of the roller body 1 during the rotation of the roller body 1, further improving the uniformity of the fiber slurry sprayed onto the mesh roller, improving the uniformity and quality of the fiber web, and then improving the product performance of the final regenerated leather.

[0068] The above are preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A method for producing regenerated leather, characterized in that: The method comprises the following steps: S1, recycling and screening: recycling scraps and screening the recycled scraps; S2, brushing and opening: brushing and opening the scraps that meet the requirements to loosen the leather fibers; S3, preparation of fiber slurry: stirring the leather fibers obtained by brushing and opening with water to obtain fiber slurry; S4, spraying and web forming: spraying the fiber slurry on the web roller in a spraying form to adsorb and hang the web to form a fiber web; S5, compounding: laying the fiber web on the cloth base and reinforcing it; wherein the web roller in step S4 comprises a roller body ( 1) and a hanging net (2) arranged on the surface of a roller body (1), the roller body (1) being hollow, and the surface of the roller body (1) being provided with a plurality of first adsorption holes (11) connected to the interior of the roller body (1); a partition bar (12) being arranged inside the roller body (1), the roller body (1) and the partition bar (12) being relatively rotatable, the partition bar (12) dividing the interior of the roller body (1) into a first chamber (13) and a second chamber (14), the first chamber (13) always facing the spraying direction of the fiber slurry, and the first chamber (13) being connected to a first negative pressure adsorption component.

2. The method for producing regenerated leather according to claim 1, characterized in that: In step S4, the fiber slurry is sprayed by a spray gun (3), wherein the spray gun (3) is arranged on one side of the roller body (1) and a plurality of the spray guns (3) are arranged at intervals along the axial direction of the roller body (1), and the spraying direction of the spray gun (3) is obliquely upward and toward the hanging net (2) on the surface of the roller body (1); a conveyor belt (4) for conveying the cloth base is provided at the bottom of the roller body (1).

3. The method for producing regenerated leather according to claim 2, characterized in that: The roller body (1) is provided with a mounting frame (5), the two ends of the roller body (1) are rotatably connected to the mounting frame (5), and the mounting frame (5) is provided with a driving member (51) for driving the roller body (1) to rotate; an air blowing pipe (52) is provided in the second chamber (14), the two ends of the air blowing pipe (52) are extended along the axial direction of the roller body (1) and are connected to the mounting frame (5); a plurality of air blowing holes (521) communicating with the interior of the air blowing pipe (52) are provided on the peripheral wall of the air blowing pipe (52), and the air blowing holes (521) are oriented toward the side of the air blowing pipe (52) away from the first chamber (13).

4. The method for producing regenerated leather according to claim 3, characterized in that: The mounting frame (5) is slidably mounted with a separation strip (6), the separation strip (6) being located on a side of the roller body (1) away from the spray gun (3), the separation strip (6) having a third chamber (61), a side wall of the separation strip (6) close to the roller body (1) being provided with a plurality of second adsorption holes (62) connected to the third chamber (61), the third chamber (61) being connected to a second negative pressure adsorption component; a linkage assembly (7) is provided between the roller body (1) and the separation strip (6), and when the roller body (1) rotates, the linkage assembly (7) forces the separation strip (6) to move back and forth so as to intermittently approach or move away from the roller body (1).

5. The method for producing regenerated leather according to claim 4, characterized in that: The side wall of the mounting frame (5) is provided with a sliding groove (53), a sliding block (54) is slidably installed in the sliding groove (53), the separation bar (6) is connected to the sliding block (54), the separation bar (6) is slidably installed on the mounting frame (5) through the sliding block (54), and the outer peripheral wall of the roller body (1) is coaxially provided with a driving gear ring (15); the linkage component (7) comprises a linkage disk (71), a linkage rod (72) and a linkage gear (73), the linkage disk (71) is rotatably installed on the side wall of the mounting frame (5), one end of the linkage rod (72) is hinged to the surface of the linkage disk (71), and the other end is hinged to the separation bar (6); the linkage gear (73) is coaxially arranged on the linkage disk (71), and the linkage gear (73) and the driving gear ring (15) are meshed and transmitted.

6. The method for producing regenerated leather according to claim 5, characterized in that: A plurality of docking rods (711) are provided on the surface of the linkage disk (71), and the plurality of docking rods (711) are arranged at intervals along the radial direction of the linkage disk (71); a docking sleeve (721) is provided at one end of the linkage rod (72) away from the separation strip (6); the docking sleeve (721) has a docking groove (722) for the docking rod (711) to be inserted; the docking sleeve (721) is provided with a docking assembly (8), and the docking sleeve (721) and the docking rod (711) are detachably connected via the docking assembly (8).

7. The method for producing regenerated leather according to claim 6, characterized in that: The outer wall of the docking sleeve (721) is provided with a docking hole (723) connected to the docking groove (722), and the outer peripheral wall of the docking rod (711) is provided with a clamping groove (712); the docking assembly (8) comprises a limiting sleeve (81), a return spring (82) and a limiting ball (83); the limiting sleeve (81) is slidably sleeved on the outer peripheral wall of the docking sleeve (721), the return spring (82) is installed between the limiting sleeve (81) and the docking sleeve (721), and the return spring (82) forces the limiting sleeve (81) to cover the docking hole (723); the limiting ball (83) is embedded in the docking hole (723), and when the docking rod (711) is inserted into the docking groove (722) and the limiting sleeve (81) covers the docking hole (723), the limiting sleeve (81) pushes the limiting ball (83) to be partially embedded in the clamping groove (712).

8. The method for producing regenerated leather according to claim 5, characterized in that: The mounting frame (5) is provided with an adsorption seat (55), and the adsorption seat (55) has an adsorption chamber (551), and the second negative pressure adsorption member is provided on the adsorption seat (55) for extracting air from the adsorption chamber (551); an end of the separation strip (6) close to the adsorption seat (55) is provided with a suction hole (63) connected to the third chamber (61), and a side wall of the adsorption seat (55) close to the separation strip (6) is provided with a suction groove (552) connected to the adsorption chamber (551), and the suction groove (552) is opposite to the sliding groove (53), and the Both ends of the suction groove (552) are extended along the length direction of the sliding groove (53); the sliding groove (53) has a first point position (531) and a second point position (532), the second point position (532) is located on the side of the first point position (531) away from the roller body (1), when the sliding block (54) moves to the first point position (531), the suction hole (63) is connected to the suction groove (552), when the sliding block (54) moves to the second point position (532), the suction hole (63) and the suction groove (552) are misaligned.

9. The method for producing regenerated leather according to claim 8, characterized in that: The separation bar (6) is provided with a rotating rod (64), and the rotating rod (64) is rotatably mounted on the sliding block (54), and the separation bar (6) is rotatably mounted on the sliding block (54) through the rotating rod (64); a flip gear (641) is coaxially fixed to the outer peripheral wall of the rotating rod (64), and a flip rack (56) is installed on the side wall of the mounting frame (5), and the two ends of the flip rack (56) are extended along the length direction of the sliding groove (53), and the flip rack (56) and the flip gear (641) are meshed and transmitted; when the sliding block (54) moves to the first point position (531), the second adsorption hole (62) of the separation bar (6) rotates to face the roller body (1), and when the sliding block (54) moves from the first point position (531) to the second point position (532), the rotation direction of the separation bar (6) is set opposite to the rotation direction of the roller body (1).

10. The method for producing regenerated leather according to claim 3, characterized in that: A translation seat (57) is provided on one side of the mounting frame (5) close to the spray gun (3), and a plurality of translation blocks (571) are slidably installed in the translation seat (57). The plurality of translation blocks (571) are arranged corresponding to the plurality of spray guns (3), and each of the spray guns (3) is installed on a corresponding translation block (571). The spray gun (3) is slidably installed on the translation seat (57) via the translation block (571); a translation member is provided between the translation seat (57) and the roller body (1), and when the roller body (1) rotates, the translation member drives the translation block (571) to move back and forth along the axial direction of the roller body (1).

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