A superfine fiber leather coater and a waterproof, breathable and highly wear-resistant superfine fiber leather

Abstract

The ultrafine leather coater and the waterproof and breathable highly wear-resistant ultrafine leather of the present invention belong to the technical field of fabric surface treatment. When the ultrafine leather coater coats the ultrafine leather fabric substrate, the ultrafine leather fabric substrate can be stretched horizontally while being coated. The ultrafine leather fabric substrate passes above the coater. Through the extrusion of the first piston assembly and the second piston assembly and the expansion or retraction of the rolling ring group, the coating liquid can be sprayed onto the ultrafine leather fabric substrate at a certain speed during coating, improving the coating effect. The coating liquid includes alumina, which improves the hardness and wear resistance of the coating liquid, and also includes silicon carbide, which can enhance the wear resistance and scratch resistance of the coating liquid. During the molding of the ultrafine leather fabric substrate, a water repellent is added to the impregnating liquid, making the produced ultrafine fiber synthetic leather have high air permeability, water vapor permeability, and waterproof performance.

Description

Technical Field

[0001] The present invention relates to the technical field of fabric surface treatment, and particularly relates to a synthetic leather coater and a waterproof, breathable and highly wear-resistant synthetic leather. Background Art

[0002] Synthetic leather is short for ultra-fine fiber synthetic leather. Since the fibers of synthetic leather are very fine, it is closer to natural leather in terms of microstructure and performance, and has better mechanical properties. Although synthetic leather has a certain degree of wear resistance, it may still show wear during long-term and high-intensity use. The existing treatment method for synthetic leather is usually to coat a wear-resistant layer on the surface of synthetic leather using a coating roller. However, when a common coating roller is used for coating, if the synthetic leather is folded or has wrinkles, the wear-resistant material cannot be evenly coated on the synthetic leather, which affects the final forming effect of the synthetic leather. In the prior art, for fabric surface treatment, such as the coating device for fabric production disclosed in Patent Document 1 (CN118719443A), it can effectively level the fabric through the setting of a leveling roller, and then input it into the coating mechanism for coating. Although it includes a leveling roller, the leveling roller is realized by setting a number of spiral leveling protrusions, and leveling and coating are carried out separately. In this way, the fabric may shrink back after leveling, ultimately affecting coating. In addition, it also increases the lateral space occupied by the coating device, affecting the volume of the device. Another example is the color-coated steel sheet coating device disclosed in Patent Document 2 (CN117259105A), which is provided with a roll coating roller located outside and a second roller plate inside. By controlling the relative rotation between the roll coating roller and the second roller plate, it can control whether the coating can flow out of the holes. In addition, when the roll coating roller rotates, it can drive the expansion or contraction of the second roller plate. During the expansion process, the coating inside the roll coating roller can be extruded outside the roll coating roller in a manner similar to extrusion for coating. Although the setting of this coating device can still keep the coating amount in a relatively uniform state when the amount of coating inside is small, since it only relies on the expansion of the second roller plate for extrusion, there must be a difference between the coating amount and the coating amount when there is more coating, and it still cannot achieve a very good effect of uniform coating amount. In addition, since the coating object of this coating device is a metal coil, there is no need to smooth the material at all, and it also has the defect of being unable to smooth when used for synthetic leather.

[0003] In summary, for the surface treatment of ultra-fine fiber leather in the prior art, it is surface-coated through an ordinary coating roller. When coating on the surface of ultra-fine fiber leather with creases or uneven surface, it is very difficult to evenly coat the coating liquid on the surface of ultra-fine fiber leather. In addition, even if there is a flattening component to unfold the fabric to be coated, the coating and unfolding actions are separated, and there is no leather coater that can perform coating and flattening simultaneously. Although there is a coater with the material to be coated arranged inside, the amount of the material to be coated on the fabric will become less and less as the material to be coated decreases, and finally the wear-resistant material coated on the surface of the ultra-fine fiber leather fabric will be uneven, which will ultimately affect the wear resistance of the ultra-fine fiber leather. Therefore, the present invention provides an ultra-fine fiber leather coater that can perform uniform coating and can also smooth the surface of the fabric, as well as a waterproof, breathable and highly wear-resistant ultra-fine fiber leather. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide an ultra-fine fiber leather coater, which includes: a coating roller group and a base. The coating roller group can move up and down along the vertical direction of the base. The coating roller group includes a lifting support frame group and a coating sleeve assembly. The coating sleeve assembly includes an outer sleeve, a first piston assembly, a second piston assembly, a first cable assembly, a second cable assembly and a rolling ring group. The outer sleeve includes a hollow cylindrical body I, and a longitudinal strip hole group is opened on one side wall of the hollow cylindrical body. The rolling ring group is rotatably arranged on the outside of the outer sleeve, and a transverse strip hole group is opened on the rolling ring group. One end of the first piston assembly is slidably arranged on the left side of the outer sleeve, and the other end of the first piston assembly is connected to one end of the lifting support frame group. One end of the second piston assembly is slidably arranged on the right side of the outer sleeve, and the other end of the second piston assembly is connected to the other end of the lifting support frame group. One end of the first cable assembly is connected to the first piston assembly, and the other end is connected to one side of the rolling ring group. One end of the second cable assembly is connected to the second piston assembly, and the other end is connected to the other side of the rolling ring group. When the lifting support frame group contracts horizontally, the coating roller group is in the coating state. The first cable assembly and the second cable assembly pull the rolling ring group to unfold. The transverse strip hole group communicates with the longitudinal strip hole group, and the rolling ring group unfolds the ultra-fine fiber leather fabric substrate. The coating liquid in the hollow cylindrical body I can be coated on the surface of the ultra-fine fiber leather fabric substrate. After the rolling ring group unfolds in place, the coating roller group descends and leaves the surface of the ultra-fine fiber leather fabric substrate, and the coating roller group is in the reset state. The rolling ring group contracts, and the transverse strip hole group closes with the longitudinal strip hole group.

[0005] Further, it further includes a fixed guide roller and a movable guide roller. The fixed guide roller, the coating roller set and the movable guide roller are arranged horizontally in sequence along the base. The movable guide roller can move up and down along the vertical direction of the base. The lifting support frame set includes a lifting cylinder, a fixed support plate, a first L-shaped support plate and a second L-shaped support plate. The fixed support plate is arranged at the upper end of the lifting cylinder. The first L-shaped support plate and the second L-shaped support plate are slidably arranged at both ends of the fixed support plate. The first L-shaped support plate is connected to the first piston assembly, and the second L-shaped support plate is connected to the second piston assembly. When the lifting cylinder extends, it can drive the coating roller set to approach the ultra-fine leather fabric substrate. At the same time, the movable guide roller moves downward away from the ultra-fine leather fabric substrate. The first L-shaped support plate and the second L-shaped support plate continue to approach each other, and the coating roller set is in a coating state. When the coating roller set is in a reset state, the ultra-fine leather fabric substrate is supported by the fixed guide roller and the movable guide roller.

[0006] Further, the ropes of the first rope assembly and the second rope assembly are both wound with a rope length adjustment assembly. The rope length adjustment assembly includes a first rope wheel, a second rope wheel, a third rope wheel and a compensation cylinder. The second rope wheel is arranged at the end of the compensation cylinder. The first rope wheel and the third rope wheel are arranged at both ends of the compensation cylinder. The first rope wheel, the second rope wheel and the third rope wheel are arranged in a triangular shape. The rope passes horizontally through the first rope wheel and then winds upward around the second rope wheel, then passes downward through the third rope wheel, and finally winds out horizontally from the third rope wheel. The compensation cylinder is in an extended state. The compensation cylinder is in a locked state when the first L-shaped support plate and the second L-shaped support plate move inward. When the first L-shaped support plate and the second L-shaped support plate stop and the rolling ring set needs to be reset, the compensation cylinder retracts, so that the rope is in a relaxed state and the rolling ring set retracts and resets.

[0007] Further, the rolling ring group includes a fixed inner ring, a plurality of movable inner rings and a plurality of movable outer rings. The fixed inner ring can rotate around the axis of the outer sleeve and cannot slide along the axis of the outer sleeve. The fixed inner ring is rotatably arranged at the center of the outer sleeve. Along the axis direction extending from the center of the outer sleeve to both ends, the movable outer rings, movable inner rings and movable outer rings are sequentially and repeatedly arranged. Both the left end and the right end of the fixed inner ring are connected to the adjacent movable outer rings through a plurality of first springs. Both the left end and the right end of the movable inner rings are connected to the adjacent movable outer rings through a plurality of second springs. The first springs and the second springs are in a contracted state in the initial state. In this way, the rolling ring group can be in a retracted state in the initial state. The fixed inner ring and the movable inner rings are both within the movable outer rings. The plurality of movable outer rings are close to each other and in contact. The first cable assembly is slidably arranged on the left side of the leftmost movable outer ring. The second cable assembly is slidably arranged on the right side of the rightmost movable outer ring. By pulling the first cable assembly and the second cable assembly, the movable outer rings and the movable inner rings, and the fixed inner ring and the movable outer rings overcome the elastic forces of the first springs and the second springs and unfold, so that the rolling ring group is in an unfolded state. At this time, the adjacent movable outer rings are separated from each other, exposing the movable inner rings. The sliding of the movable outer rings and the movable inner rings can stretch the closely attached ultra-fine leather fabric substrate.

[0008] Further, the movable outer ring includes a first ring body. A plurality of first transverse strip-shaped holes are arranged on the circumferential side of the first ring body. The fixed inner ring includes a second ring body. A plurality of second transverse strip-shaped holes are arranged on the circumferential side of the second ring body. The movable inner ring includes a third ring body. A plurality of third transverse strip-shaped holes are arranged on the circumferential side of the third ring body. The first transverse strip-shaped holes, the second transverse strip-shaped holes and the third transverse strip-shaped holes form the transverse strip-shaped hole group.

[0009] Further, a middle limiting ring platform is arranged on the outer periphery of the first hollow cylinder at the center of the first hollow cylinder. An annular limiting groove is arranged at the inner center of the second ring body. The middle limiting ring platform is accommodated in the annular limiting groove. An inner through hole one penetrating through the left and right sides of the first hollow cylinder is arranged in the first hollow cylinder.

[0010] Further, the first piston assembly includes a first inner sliding column, a first inner piston sleeve and a first outer piston sleeve. The second piston assembly includes a second inner sliding column, a second inner piston sleeve and a second outer piston sleeve. The first inner piston sleeve is sleeved outside the first inner sliding column. The first outer piston sleeve is sleeved outside the first inner piston sleeve. The first outer piston sleeve passes through the left side of the first hollow cylinder. The second inner piston sleeve is sleeved outside the second inner sliding column. The second outer piston sleeve is sleeved outside the second inner piston sleeve. The second outer piston sleeve passes through the right side of the first hollow cylinder.

[0011] Furthermore, the first pull rope assembly and the second pull rope assembly have the same structure, both comprising an end arc plate 1, the pull rope and the cable length adjustment assembly, one end of the end arc plate 1 being slidably disposed on the left end of the leftmost movable outer ring or the right end of the rightmost movable outer ring, the other end of the end arc plate 1 being connected to one end of the pull rope, the other end of the pull rope being connected to the first inner sliding column or the second inner sliding column, the pull rope passes through the cable length adjustment assembly, and the cable length adjustment assembly is disposed on the outer sleeve.

[0012] Furthermore, the first outer piston sleeve and the second outer piston sleeve have the same structure, both comprising a hollow cylinder body 2, a first support rod, a second support rod, a connecting shaft and a first guide pulley, an inner through hole 2 is opened in the hollow cylinder body 2, a fan-shaped blind hole 1 is opened axially at the side wall of the hollow cylinder body 2, and an outer longitudinal through hole 1 and an inner longitudinal through hole 1 are opened in sequence on the hollow cylinder body 2 at one of the fan-shaped blind holes along the radial direction, the first support rod and the second support rod are respectively arranged on the outside of the hollow cylinder body 2, the first support rod and the second support rod are clamped at both ends of the outer longitudinal through hole 1, and the two ends of the connecting shaft are respectively fixedly provided Placed at the upper ends of the first support rod and the second support rod, the first guide pulley is rotatably arranged on the connecting shaft, and the pull rope is guided by the first guide pulley; the first inner piston sleeve and the second inner piston sleeve have the same structure, both including a hollow cylinder three, an inner through hole three is opened on the inner side of the hollow cylinder three, a fan-shaped blind hole two is opened axially at the side wall of the hollow cylinder three, and an outer longitudinal through hole two is opened on the outer side of the hollow cylinder three along the radial direction at the fan-shaped blind hole two, and a second guide pulley is arranged at one end of the hollow cylinder three away from the opening of the fan-shaped blind hole two, and the pull rope is guided by the second guide pulley.

[0013] Preferably, it also includes a waterproof and breathable high wear-resistant microfiber leather, which is made by a microfiber leather coater, and the manufacturing process of the waterproof and breathable high wear-resistant microfiber leather is as follows:

[0014] 1. Wear-resistant coating configuration:

[0015] Take out the polyurethane resin, add alumina powder and silicon carbide powder, react at high temperature, stir until the polyurethane resin is completely dissolved to form a uniform resin solution, then add a leveling agent and a defoaming agent to mix, use a filter to filter the mixed coating, let the filtered coating stand for maturation, and form a wear-resistant coating;

[0016] 2. Preparation of microfiber leather fabric base material:

[0017] Using a sea-island fiber non-woven fabric as a substrate, impregnate the non-woven fabric using a wet process. The impregnating slurry includes polyurethane, dimethylformamide, and an oil-based water repellent. After wet coagulation, a sea-island fiber and polyurethane composite material is formed, and then through alkali weight reduction or toluene weight reduction, the substrate of the microfiber leather fabric is obtained.

[0018] III. Coating application:

[0019] Add the wear-resistant layer coating obtained in Step 1 to the coating roller set of the microfiber leather coater, so that the substrate of the microfiber leather fabric passes through the coating roller set, squeeze the first piston assembly and the second piston assembly, and the rolling ring set changes from the retracted state to the deployed state. The rolling ring set horizontally stretches the substrate of the microfiber leather fabric, and at the same time, the coating is sprayed out from several through holes formed by the connected horizontal strip-shaped hole groups and vertical strip-shaped hole groups to coat the substrate of the microfiber leather fabric, forming a waterproof, breathable, and highly wear-resistant microfiber leather.

[0020] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0021] 1. The microfiber leather coater of the present invention can, when coating the substrate of the microfiber leather fabric, not only horizontally stretch the substrate of the microfiber leather fabric but also coat it. And when coating the substrate of the microfiber leather fabric, the coating liquid is placed below, and the substrate of the microfiber leather fabric passes from above. Through the extrusion operation of the first piston assembly and the second piston assembly, in cooperation with the deployment and retraction of the rolling ring set, the coating liquid can be sprayed onto the substrate of the microfiber leather fabric at a certain speed during coating, thereby making the coating effect better. The coating liquid includes alumina, which can improve the hardness and wear resistance of the coating liquid, and also includes silicon carbide, which can further enhance the wear resistance and scratch resistance of the coating liquid. At the same time, during the forming of the substrate of the microfiber leather fabric, a water repellent is added to the impregnating liquid, so that the produced microfiber synthetic leather has high air permeability, water vapor permeability, and waterproof performance, and finally a waterproof, breathable, and highly wear-resistant microfiber leather with good waterproof performance, excellent air permeability effect, and high wear resistance can be obtained;

[0022] 2. The ultra-fine leather coater of the present invention includes a fixed guide roller, a coating roller group, and a moving guide roller. The coating roller group and the moving guide roller can perform corresponding lifting actions according to the actual coating situation. The coating roller group includes a lifting support frame group and a coating sleeve assembly. The lifting support frame group includes a lifting cylinder and a first L-shaped support plate and a second L-shaped support plate that can slide relative to each other. The coating sleeve assembly includes an outer sleeve, a rolling ring group rotatably arranged in the outer sleeve, a first cable assembly, a second cable assembly, a first piston assembly, and a second piston assembly. The first cable assembly and the second cable assembly are connected to the rolling ring group, the first piston assembly, and the second piston assembly. The first piston assembly and the second piston assembly are slidably arranged on the left and right sides of the outer sleeve. The first piston assembly is connected to the first L-shaped support plate, and the second piston assembly is connected to the second L-shaped support plate. With such a setting, by controlling the relative sliding of the first L-shaped support plate and the second L-shaped support plate, the sliding of the first piston assembly and the second piston assembly can be controlled, so as to squeeze the coating liquid in the outer sleeve. In addition, the sliding of the first piston assembly and the second piston assembly can drive the movement of the first cable assembly and the second cable assembly, so that the rolling ring group can switch back and forth between the retracted state and the deployed state, and finally make the transverse strip hole group and the longitudinal strip hole group switch between the communicating state and the closed state, realizing the coating operation of the coating liquid;

[0023] 3. The rolling ring group of the present invention includes a fixed inner ring, several movable inner rings, and several movable outer rings. The fixed inner ring and the movable inner rings are connected by a first spring, and the movable inner rings and the movable outer rings are connected by a second spring. The fixed inner ring, the movable inner rings, and the movable outer rings are all rotatably connected to the outside of the outer sleeve. With such a setting, when the rolling ring group is used to coat a relatively wide ultra-fine leather fabric substrate, the transmission of each part can be synchronized. Through the setting of the first spring and the second spring arranged in a linkage manner, the rolling ring group can better coat the fabric. A number of second transverse strip holes are arranged on the fixed inner ring, a number of third transverse strip holes are arranged on the movable inner rings, and a number of first transverse strip holes are arranged on the movable outer rings. The first transverse strip holes, the second transverse strip holes, and the third transverse strip holes form a transverse strip hole group. Correspondingly, a number of longitudinal strip hole groups are arranged on the outside of the outer sleeve. The hole opening directions of the transverse strip hole group and the longitudinal strip hole group are perpendicular to each other. With such a setting, when the transverse strip hole group and the longitudinal strip hole group intersect, a spray hole for the coating liquid to pass through can be formed at the intersection. Compared with the existing fixed through-hole structure, the position of the spray hole can be adjusted adaptively, which is more flexible and the spraying effect is better;

[0024] 4. The fixed inner ring, several movable inner rings and several movable outer rings provided in the rolling ring group of the present invention can be unfolded under the pulling of the first pulling rope assembly and the second pulling rope assembly, and approach each other for reset under the action of the first spring and the second spring. In order to enable the first piston assembly and the second piston assembly to continuously perform extrusion, and the rolling ring group can cycle between the retracted state and the unfolded state, both the first pulling rope assembly and the second pulling rope assembly include a rope length adjusting assembly. By the retraction of the compensation cylinder in the rope length adjusting assembly, it can meet the reset of the rolling ring group, so that both the first piston assembly and the second piston assembly can continuously extrude the coating liquid;

[0025] 5. Finally, in order to avoid the situation that if the outer sleeve only includes one piston structure, the coating liquid in the outer sleeve may not be extruded into the longitudinal strip holes near the two end faces of the outer sleeve, the first piston assembly and the second piston assembly include several piston structures that can be sleeved with each other, and a first ring plate and a second ring plate are arranged at the left and right ends of the outer sleeve. Specifically, both the first piston assembly and the second piston assembly include an inner sliding column, an inner piston sleeve and an outer piston sleeve that are sleeved with each other from the inside to the outside. And in order to ensure the continuity of the extrusion of the coating liquid in the outer sleeve and ensure that the coating liquid can be evenly ejected, the inner sliding column, the inner piston sleeve and the outer piston sleeve are sequentially extruded inward. In addition, a second sector-shaped blind hole and an outer longitudinal through hole communicating with the second sector-shaped blind hole are arranged in the inner piston sleeve, a first sector-shaped blind hole, an inner longitudinal through hole communicating with the first sector-shaped blind hole and an outer longitudinal through hole are arranged in the outer piston sleeve, the outer longitudinal through hole and the inner longitudinal through hole are correspondingly arranged, and the inner longitudinal through hole and the outer longitudinal through hole are correspondingly arranged. Description of the Drawings

[0026] Figure 1 is a schematic structural diagram of the superfine fiber leather coater of the present application during coating;

[0027] Figure 2 is a schematic structural diagram of the superfine fiber leather coater in the initial state;

[0028] Figure 3 is a schematic structural diagram of the superfine fiber leather coater in the coating state;

[0029] Figure 4 in which (a) is a schematic diagram of the state of the superfine fiber leather coater in the initial state, and (b) is a schematic diagram of the state of the superfine fiber leather coater in the coating state;

[0030] Figure 5 is an assembly schematic diagram of the coating sleeve assembly;

[0031] Figure 6 is an exploded view of the coating sleeve assembly Figure 1 ;

[0032] Figure 7 Explosion schematic of the coating sleeve assembly Figure 2 ;

[0033] Figure 8 In (a) is the structural schematic of the outer sleeve Figure 1 、(b) is the structural schematic of the outer sleeve Figure 2 ;

[0034] Figure 9 Structural schematic of the movable outer ring

[0035] Figure 10 In (a) is the structural schematic of the fixed inner ring, (b) is the structural schematic of the movable inner ring

[0036] Figure 11 In (a) is the structural schematic of the first outer piston sleeve or the second outer piston sleeve Figure 1 、(b) is the structural schematic of the first outer piston sleeve or the second outer piston sleeve Figure 2 ;

[0037] Figure 12 In (a) is the structural schematic of the first inner piston sleeve or the second inner piston sleeve Figure 1 、(b) is the structural schematic of the first inner piston sleeve or the second inner piston sleeve Figure 2 ;

[0038] Figure 13 Structural schematic of the coating roller group

[0039] Figure 14 For Figure 13 Enlarged view A

[0040] Figure 15 In (a) is the top view of the rolling ring group in the unfolded state, (b) is the top view of the outer sleeve, (c) is the top view of the rolling ring group in the contracted state

[0041] Figure 16 For Figure 15 B - B cross-sectional view

[0042] Figure 17 Structural schematic of the cable length adjustment assembly

[0043] Among them, 1. Microfiber leather fabric substrate; 2. Fixed guide roller; 3. Movable guide roller; 4. Coating roller group; 5. Base; 6. Lifting support frame group; 7. Coating sleeve assembly; 8. First driving cylinder; 9. Outer sleeve; 10. First outer piston sleeve; 11. First inner piston sleeve; 12. First inner sliding column; 13. Second outer piston sleeve; 14. Second inner piston sleeve; 15. Second inner sliding column; 16. First piston assembly; 17. Second piston assembly; 18. Lifting cylinder; 19. Fixed support plate; 20. First L-shaped support plate; 21. Second L-shaped support plate; 22. Rolling ring group; 23. Transverse strip hole group; 24. Longitudinal strip hole group; 25. First cable assembly; 26. Second cable assembly; 27. First hollow cylinder; 28. First ring plate; 29. Second ring plate; 30. Fixed inner ring; 31. Movable inner ring; 32. Movable outer ring; 33. First ring body; 34. First transverse strip hole; 35. First receiving ring groove; 36. Second receiving ring groove; 37. Second ring body; 38. Second transverse strip hole; 39. Annular limiting groove; 40. Third ring body; 41. Third transverse strip hole; 42. Intermediate limiting ring platform; 43. First end arc plate; 44. Cable; 45. First guiding pulley; 46. Second guiding pulley; 47. Second hollow cylinder; 48. First sector blind hole; 49. Outer longitudinal through hole one; 50. Inner longitudinal through hole one; 51. First support rod; 52. Second support rod; 53. Connecting shaft; 54. Third hollow cylinder; 55. Second sector blind hole; 56. Outer longitudinal through hole two; 57. Inner through hole one; 58. Inner through hole two; 59. Inner through hole three; 60. Second end arc plate; 61. Second driving cylinder; 62. Vertical support plate; 63. Rope length adjusting assembly; 64. Supplementary cylinder; 65. First rope pulley; 66. Second rope pulley; 67. Third rope pulley; 68. Support plate; 69. Support leg; 70. First support plate; 71. Second support plate; 72. Third support plate; 73. Fourth support plate; 74. Long strip hole; 75. Left limiting plate; 76. Right limiting plate; 77. Winding roller; 78. Unwinding roller; 79. Longitudinal strip hole; 80. Transverse sliding plate. Detailed implementation mode

[0044] The present invention will be further described below in conjunction with embodiments. However, the present invention is not limited to the following embodiments. The implementation conditions adopted in the embodiments can be further adjusted according to different requirements of specific use, and the implementation conditions not specified are the conventional conditions in this industry. The technical features involved in each implementation mode of the present invention can be combined with each other as long as they do not conflict with each other.

[0045] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Embodiment 1

[0046] Such as Figures 1 - 17As shown in the figure, a synthetic leather coater includes: a fixed guide roller 2, a movable guide roller 3, a coating roller set 4 and a base 5. The fixed guide roller 2, the coating roller set 4 and the movable guide roller 3 are arranged horizontally in sequence along the base 5. The fixed guide roller 2 and the movable guide roller 3 are both rotatably arranged on the base 5. The movable guide roller 3 and the coating roller set 4 can both move up and down along the vertical direction of the base 5. The coating roller set 4 includes a lifting support frame group 6 and a coating sleeve assembly 7. The lifting support frame group 6 includes a lifting cylinder 18, a fixed support plate 19, a first L-shaped support plate 20 and a second L-shaped support plate 21. The fixed support plate 19 is arranged at the upper end of the lifting cylinder 18. The first L-shaped support plate 20 and the second L-shaped support plate 21 are slidably arranged at both ends of the fixed support plate 19. The coating sleeve assembly 7 includes an outer sleeve 9, a first piston assembly 16, a second piston assembly 17, a first cable assembly 25, a second cable assembly 26 and a rolling ring group 22, as Figure 8As shown, the outer sleeve 9 includes a first hollow cylinder body 27. An inner through hole 57 that penetrates both the left and right sides of the first hollow cylinder body 27 is provided inside the first hollow cylinder body 27. A longitudinal strip hole group 24 is formed on the side wall of the first hollow cylinder body 27. The rolling ring group 22 is rotatably arranged on the outside of the outer sleeve 9. A number of transverse strip hole groups 23 are formed on the rolling ring group 22. One end of the first piston assembly 16 is slidably arranged on the left side of the outer sleeve 9, and the other end of the first piston assembly 16 is connected to the first L-shaped support plate 20. One end of the second piston assembly 17 is slidably arranged on the right side of the outer sleeve 9, and the other end of the second piston assembly 17 is connected to the second L-shaped support plate 21. One end of the first cable assembly 25 is connected to the first piston assembly 16, and the other end is connected to one side of the rolling ring group 22. One end of the second cable assembly 26 is connected to the second piston assembly 17, and the other end is connected to the other side of the rolling ring group 22. When the first L-shaped support plate 20 and the second L-shaped support plate 21 approach each other, the coating roller group 4 is in the coating state. In the coating state, the first cable assembly 25 and the second cable assembly 26 pull the rolling ring group 22 to unfold. The transverse strip hole groups 23 communicate with the longitudinal strip hole group 24. While the rolling ring group 22 unfolds the ultra-fine leather fabric substrate 1, the coating liquid in the first hollow cylinder body 27 can be coated on the surface of the ultra-fine leather fabric substrate 1. After the rolling ring group 22 unfolds in place, the lifting cylinder 18 retracts, and the coating roller group 4 moves away from the ultra-fine leather fabric substrate 1. The fixed guide roller 2 and the movable guide roller 3 support the ultra-fine leather fabric substrate 1. The rolling ring group 22 resets, and the transverse strip hole groups 23 are closed to the longitudinal strip hole group 24. The lifting cylinder 18 extends, driving the coating roller group 4 to approach the ultra-fine leather fabric substrate 1. The movable guide roller 3 moves downward away from the ultra-fine leather fabric substrate 1. The first L-shaped support plate 20 and the second L-shaped support plate 21 continue to approach each other, and the coating roller group 4 is in the coating state again. In this way, it is possible to unfold and coat the entire ultra-fine leather fabric substrate 1 at the same time.

[0047] As Figure 13 , Figure 14 , Figure 17As shown, in order to facilitate the reset of the rolling ring group 22, the first L-shaped support plate 20 and the second L-shaped support plate 21 can remain in place, facilitating the next inward extrusion of the first piston assembly 16 and the second piston assembly 17. The ropes 44 of the first rope assembly 25 and the ropes 44 of the second rope assembly 26 are both wound around a rope length adjustment assembly 63. The rope length adjustment assembly 63 includes a first rope pulley 65, a second rope pulley 66, a third rope pulley 67, and a compensation cylinder 64. The second rope pulley 66 is arranged at the end of the compensation cylinder 64. The first rope pulley 65 and the third rope pulley 67 are arranged at both ends of the compensation cylinder 64. The first rope pulley 65, the second rope pulley 66, and the third rope pulley 67 are arranged in a triangular shape. The rope 44 passes horizontally through the first rope pulley 65 and then winds upward around the second rope pulley 66, and then passes downward through the third rope pulley 67 and finally winds out horizontally from the third rope pulley 67. The compensation cylinder 64 is in an extended state. The compensation cylinder 64 is in a locked state when the first L-shaped support plate 20 and the second L-shaped support plate 21 move inward. When the first L-shaped support plate 20 and the second L-shaped support plate 21 stop and the rolling ring group 22 needs to be reset, the compensation cylinder 64 retracts, so that the rope 44 is in a relaxed state and the rolling ring group 22 retracts and resets.

[0048] As Figures 5 - 10 As shown, the rolling ring group 22 includes a fixed inner ring 30, a plurality of movable inner rings 31, and a plurality of movable outer rings 32. The fixed inner ring 30 can rotate around the axis of the outer sleeve 9 but cannot slide along the axis of the outer sleeve 9. The fixed inner ring 30 is rotatably arranged at the center of the outer sleeve 9. Along the axis extending from the center of the outer sleeve 9 to both ends, the movable outer rings 32, the movable inner rings 31, and the movable outer rings 32 are sequentially and repeatedly arranged. Both the left end and the right end of the fixed inner ring 30 are connected to the adjacent movable outer rings 32 through a plurality of first springs (not shown in the figure). Both the left end and the right end of the movable inner ring 31 are connected to the adjacent movable outer rings 32 through a plurality of second springs. The first springs and the second springs are in a contracted state in the initial state. In this way, the rolling ring group 22 can be in a retracted state in the initial state. At this time, both the fixed inner ring 30 and the movable inner rings 31 are within the movable outer rings 32, and the plurality of movable outer rings 32 are close to each other. The first rope assembly 25 is slidably arranged on the left side of the leftmost movable outer ring 32, and the second rope assembly 26 is slidably arranged on the right side of the rightmost movable outer ring 32. By pulling the first rope assembly 25 and the second rope assembly 26, the movable outer rings 32 and the movable inner rings 31, and the fixed inner ring 30 and the movable outer rings 32 expand against the elastic forces of the first springs and the second springs, so that the rolling ring group 22 is in an expanded state. At this time, the adjacent movable outer rings 32 are separated from each other, exposing the movable inner rings 31. The sliding of the movable outer rings 32 and the movable inner rings 31 can stretch the closely attached ultra-fine leather fabric substrate 1.

[0049] As Figures 9 - 10 shown, the movable outer ring 32 includes a first ring body 33, and a plurality of first transverse strip-shaped holes 34 are provided on the circumferential side of the first ring body 33. The fixed inner ring 30 includes a second ring body 37, and a plurality of second transverse strip-shaped holes 38 are provided on the circumferential side of the second ring body 37. The movable inner ring 31 includes a third ring body 40, and a plurality of third transverse strip-shaped holes 41 are provided on the circumferential side of the third ring body 40. The first transverse strip-shaped holes 34, the second transverse strip-shaped holes 38 and the third transverse strip-shaped holes 41 form the transverse strip-shaped hole group 23.

[0050] In addition, on the inner side of the first ring body 33, near the end face of the first ring body 33, a first receiving ring groove 35 and a second receiving ring groove 36 are opened. The second ring body 37 and the third ring body 40 can enter the first receiving ring groove 35 and / or the second receiving ring groove 36. In order to prevent the movable outer ring 32 and the movable inner ring 31 from separating when pulled, the movable outer ring 32 and the fixed inner ring 30 from separating, and the movable outer ring 32 and the movable inner ring 31 from separating, anti-separation structures are provided on both sides of the second ring body 37, both sides of the third ring body 40 and both sides of the first ring body 33. For example, first convex rings can be provided at both ends of the second ring body 37 and both ends of the third ring body 40, and second convex rings can be provided on the inner sides of both ends of the first ring body 33. In this way, through the mutual restriction of the first convex ring and the second convex ring, the second ring body 37 can be prevented from separating from the first ring body 33, and the third ring body 40 can be prevented from separating from the first ring body 33. Other anti-separation structures can also be used, and will not be elaborated here.

[0051] As Figure 8 、 Figure 10 shown, an intermediate limiting ring platform 42 is provided on the outer circumference of the first hollow cylinder 27 and at the center of the first hollow cylinder 27. An annular limiting groove 39 is provided at the center of the inner side of the second ring body 37. The intermediate limiting ring platform 42 is received in the annular limiting groove 39, so that the fixed inner ring 30 can rotate around the axis of the outer sleeve 9, but cannot slide along the axis of the outer sleeve 9.

[0052] As Figures 5 - 7 shown, the first piston assembly 16 includes a first inner sliding column 12, a first inner piston sleeve 11 and a first outer piston sleeve 10. The second piston assembly 17 includes a second inner sliding column 15, a second inner piston sleeve 14 and a second outer piston sleeve 13. The first inner piston sleeve 11 is sleeved on the outside of the first inner sliding column 12. The first outer piston sleeve 10 is sleeved on the outside of the first inner piston sleeve 11. The first outer piston sleeve 10 passes through the left side of the first hollow cylinder 27. The second inner piston sleeve 14 is sleeved on the outside of the second inner sliding column 15. The second outer piston sleeve 13 is sleeved on the outside of the second inner piston sleeve 14. The second outer piston sleeve 13 passes through the right side of the first hollow cylinder 27.

[0053] The first pull rope assembly 25 and the second pull rope assembly 26 have the same structure, and both include an end curved plate 43, the pull rope 44 and the cable length adjustment assembly 63. One end of the end curved plate 43 is slidably disposed on the left end of the leftmost movable outer ring 32 or the right end of the rightmost movable outer ring 32, and the other end of the end curved plate 43 is connected to one end of the pull rope 44, and the other end of the pull rope 44 is connected to the first inner sliding column 12 or the second inner sliding column 15. The pull rope 44 passes through the cable length adjustment assembly 63, and the cable length adjustment assembly 63 is disposed on the outer sleeve 9.

[0054] like Figures 11 - 12 As shown, the first outer piston sleeve 10 and the second outer piston sleeve 13 have the same structure, and both include a hollow cylinder 47, a first support rod 51, a second support rod 52, a connecting shaft 53 and a first guide pulley 45. An inner through hole 58 is opened in the hollow cylinder 47, and a fan-shaped blind hole 48 is opened axially at the side wall of the hollow cylinder 47. At the fan-shaped blind hole 48, an outer longitudinal through hole 49 and an inner longitudinal through hole 50 are opened in sequence on the hollow cylinder 47 along the radial direction. The first support rod 51 and the second support rod 52 are respectively arranged on the outside of the hollow cylinder 47, and the first support rod 51 and the second support rod 52 are clamped at both ends of the outer longitudinal through hole 49. The two ends of the connecting shaft 53 are respectively fixedly arranged on the upper ends of the first support rod 51 and the second support rod 52. The first guide pulley 45 is rotatably arranged on the connecting shaft 53, and the pull rope 44 is guided by the first guide pulley 45.

[0055] The first inner piston sleeve 11 and the second inner piston sleeve 14 have the same structure and both include a hollow cylinder three 54, an inner through hole three 59 is opened on the inner side of the hollow cylinder three 54, a fan-shaped blind hole two 55 is opened axially on the side wall of the hollow cylinder three 54, and an outer longitudinal through hole two 56 is opened on the outer side of the hollow cylinder three 54 along the radial direction at the fan-shaped blind hole two 55, and a second guide pulley 46 is provided at one end of the hollow cylinder three 54 away from the opening of the fan-shaped blind hole two 55, and the pull rope 44 is guided by the second guide pulley 46.

[0056] Preferably, the outer longitudinal through hole 2 56 corresponds to the position of the inner longitudinal through hole 1 50, so as to ensure that the coating liquid can enter the fan-shaped blind hole 1 48 through the fan-shaped blind hole 2 55, and then flow out from the outer longitudinal through hole 1 49, and finally enter the longitudinal strip hole group 24 on the surface of the outer sleeve 9. When the first piston assembly 16 and the second piston assembly 17 are squeezed inward, the coating liquid can also flow on both sides of the hollow cylinder 27, so that the coating liquid flowing out of the longitudinal strip hole group 24 can be kept as uniform as possible.

[0057] As shown Figure 5 in the figure, in order to prevent the coating liquid from flowing from the first outer longitudinal through-hole 49 to the outside of the first hollow cylinder 27, end arc-shaped plates II 60 are fixedly arranged on both side walls of the first hollow cylinder 27. The end arc-shaped plates II 60 cover the outside of the first outer piston sleeve 10 and the second outer piston sleeve 13, and can block the first outer longitudinal through-hole 49.

[0058] Further, the longitudinal strip hole group 24 is composed of a plurality of longitudinal strip holes 79. In order to ensure that the coating liquid can also flow to the longitudinal strip holes 79 at both ends of the first hollow cylinder 27, a first ring plate 28 and a second ring plate 29 are respectively arranged at both ends of the first hollow cylinder 27. The inner diameters of the first ring plate 28 and the second ring plate 29 are smaller than the inner diameter of the inside of the first hollow cylinder 27. The outer diameter of the second hollow cylinder 47 of the first outer piston sleeve 10 is equal to the inner diameter of the first ring plate 28. The outer diameter of the second hollow cylinder 47 of the second outer piston sleeve 13 is equal to the inner diameter of the second ring plate 29. The outer diameter of the third hollow cylinder of the first inner piston sleeve 11 is equal to the diameter of the second inner through-hole 58 of the second hollow cylinder 47 of the first outer piston sleeve 10. The outer diameter of the third hollow cylinder 54 of the second inner piston sleeve 14 is equal to the diameter of the second inner through-hole 58 of the second hollow cylinder 47 of the second outer piston sleeve 13. The diameter of the first inner sliding column 12 is equal to the diameter of the third inner through-hole 59 of the third hollow cylinder 54 of the first inner piston sleeve 11. The diameter of the second inner sliding column 15 is equal to the diameter of the third inner through-hole 59 of the third hollow cylinder 54 of the second inner piston sleeve 14.

[0059] Further, the first inner sliding column 12 is connected to the first L-shaped support plate 20, and the second inner sliding column 15 is connected to the second L-shaped support plate 21.

[0060] As shown Figures 15 - 16As shown, for the convenience of explaining the longitudinal strip hole group 24 and the transverse strip hole group 23, the number of the movable inner rings 31 is selected to be 2, and the number of the movable outer rings 32 is 4. Denote the length of the movable outer ring 32 as L1, and the lengths of both the fixed inner ring 30 and the movable inner ring as L2. The length of the first transverse strip hole 34 is L3, and the lengths of both the second transverse strip hole 38 and the third transverse strip hole 41 are L4. The distance from the left end of the first transverse strip hole 34 to the left end of the movable outer ring 32 is L5, and the distance from the right end of the first transverse strip hole 34 to the right end of the movable outer ring 32 is L6. The distance from the left end of the second transverse strip hole 38 to the left end of the fixed inner ring 30 is L7, and the distance from the right end of the second transverse strip hole 38 to the right end of the fixed inner ring 30 is L8. The distance from the left end of the third transverse strip hole 41 to the left end of the movable inner ring 31 is also L7, and the distance from the right end of the third transverse strip hole 41 to the right end of the movable inner ring 31 is also L8. The length of the end arc plate one 43 is L9, L5 = L6, L7 = L8. The longitudinal strip hole group 24 includes 16 longitudinal strip holes 79. The longitudinal strip holes 79 are grouped in pairs and arranged symmetrically about the middle limiting ring platform 42. Denote the four groups of longitudinal strip holes 79 located on the left side of the middle limiting ring platform 42 as the left first longitudinal strip hole group, the left second longitudinal strip hole group, the left third longitudinal strip hole group, and the left fourth longitudinal strip hole group respectively. Denote the four groups of longitudinal strip holes 79 located on the right side of the middle limiting ring platform 42 as the right first longitudinal strip hole group, the right second longitudinal strip hole group, the right third longitudinal strip hole group, and the right fourth longitudinal strip hole group respectively. Denote the axis where the center of the central cylinder one 27 is located as axis X. Denote the distances from axis X to the right end of the right first longitudinal strip hole group and from axis X to the left end of the left fourth longitudinal strip hole group as both D1. Denote the distances from axis X to the left end of the right second longitudinal strip hole group and from axis X to the right end of the left third longitudinal strip hole group as both D2. Denote the distances from axis X to the right end of the right second longitudinal strip hole group and from axis X to the left end of the left third longitudinal strip hole group as both D3. Denote the distances from axis X to the left end of the right third longitudinal strip hole group and from axis X to the right end of the left second longitudinal strip hole group as both D4. Denote the distances from axis X to the right end of the right third longitudinal strip hole group and from axis X to the left end of the left second longitudinal strip hole group as both D5. Denote the distances from axis X to the left end of the right fourth longitudinal strip hole group and from axis X to the right end of the left first longitudinal strip hole group as both D6. Denote the distances from axis X to the right end of the right fourth longitudinal strip hole group and from axis X to the left end of the left first longitudinal strip hole group as both D7. Denote the distances from axis X to the left end of the right first longitudinal strip hole group and from axis X to the right end of the left fourth longitudinal strip hole group as both D8. Then, as Figure 15 shown in (b) and (c) of Figure 15As shown in (a) and (b), 2*D8 < L4 ≤ 2*D1, 0.5*L2 + L5 ≤ D2, 0.5*L2 + L5 + L3 ≥ D3, 0.5*L2 + L1 + L7 + L4 > D4, 0.5*L2 + L1 + L2 + L5 ≤ D6, 0.5*L2 + L1 + L2 + L5 + L3 ≥ D7. In this way, it can be ensured that as shown in Figure 15 As shown in (c), when the rolling ring group 22 is in the retracted state, the transverse strip hole group 23 and the longitudinal strip hole group 24 are isolated from each other, and when the rolling ring group 22 is in the deployed state, the transverse strip hole group 23 and the longitudinal strip hole group 24 communicate with each other.

[0061] As shown in Figure 16 Let the center of the hollow cylinder body 27 be O. The extension lines of the two edges of the longitudinal strip hole 79 both pass through the center O, and the included angle between the two extension lines is β. The included angle between one of the extension lines and the horizontal line is α, and the included angle between the other extension line and the horizontal line is γ. Preferably, 15° < β ≤ 45°, α = γ, and preferably, β = 45°.

[0062] Preferably, a second driving cylinder 61 is provided between the first outer piston sleeve 10 and the outer sleeve 9, and a second driving cylinder 61 is provided between the second outer piston sleeve 13 and the outer sleeve 9. By the expansion and contraction of the second driving cylinder 61, the displacement of the first outer piston sleeve 10 and the second outer piston sleeve 13 extending into the outer sleeve 9 can be controlled. Preferably, the second driving cylinder 61 is fixed at one side of the first support rod 51 and / or the second support rod 52 and the outer sleeve 9.

[0063] Preferably, as shown in Figures 2 - 3 、 Figure 13 The first L-shaped support plate 20 and the second L-shaped support plate 21 have the same structure, and both include a transverse sliding plate 80 and a vertical support plate 62. The transverse sliding plate 80 is slidably disposed on the left and right sides of the fixed support plate 19. In addition, a transverse driving source is provided between the transverse sliding plate 80 and the fixed support plate 19. The transverse driving source can be, for example, a telescopic cylinder, which will not be elaborated here. Preferably, the first driving cylinder 8 is fixedly disposed inside the vertical support plate 62. The first inner piston sleeve 11 is in the horizontal projection direction of the vertical support plate 62, and the first driving cylinder 8 coincides with the hollow cylinder body 54 of the first inner piston sleeve 11. The second inner piston sleeve 14 is in the horizontal projection direction of the vertical support plate 62, and the first driving cylinder 8 coincides with the hollow cylinder body 54 of the second inner piston sleeve 14.

[0064] Preferably, only axial sliding is allowed between the first inner sliding column 12, the first inner piston sleeve 11 and the first outer piston sleeve 10, and relative rotation is not allowed. For example, this can be achieved by setting up a boss and a chute structure. Similarly, only axial sliding is allowed between the second inner sliding column 15, the second inner piston sleeve 14 and the second outer piston sleeve 13, and relative rotation is not allowed. The first end arc plate 43 can only slide along the axis of the outer sleeve 9 and cannot rotate relatively. For example, this can be achieved by setting a slider on the inner side of the first end arc plate 43 and a chute on the outer side of the outer sleeve 9. The movable outer ring 32 is slidably connected to the first end arc plate 43. For example, specifically, a convex block can be set on the outer side of the first end arc plate 43, and a flange extending inward is set in the first receiving ring groove 35 or the second receiving ring groove 36 that accommodates the first end arc plate 43. The flange can always hold the convex block in the first receiving ring groove 35 or the second receiving ring groove 36, which can not only prevent detachment but also ensure that the movable outer ring 32 and the first end arc plate 43 can rotate freely.

[0065] As Figure 1 shown, the base 5 includes a support plate 68 and four support legs 69 provided at the lower end of the support plate 68. A first support plate 70 and a second support plate 71 are further provided at the upper end of the support plate 68. The fixed guide roller 2 is rotatably arranged between the first support plate 70 and the second support plate 71. The first support plate 70 and the second support plate 71 are located at the left end of the support plate 68. A third support plate 72 and a fourth support plate 73 are further provided on the upper right side of the support plate 68. Longitudinal holes 74 arranged in the vertical direction are provided on both the third support plate 72 and the fourth support plate 73. The movable guide roller 3 can slide in the vertical direction along the longitudinal holes 74. For example, this sliding can be achieved by a telescopic cylinder, which is common knowledge in the art and will not be elaborated here. A left limit plate 75 and a right limit plate 76 are provided in the middle of the support plate 68. The lifting support frame group 6 is located between the left limit plate 75 and the right limit plate 76. The lower end of the lifting cylinder 18 is fixedly provided at the upper end of the support plate 68.

[0066] To facilitate those skilled in the art to clearly understand the working principle of the superfine fiber leather coater in Embodiment 1, the following is a specific description: As Figure 4 shown in (a) of, winding rollers 78 and 77 are respectively wound around both ends of the superfine fiber leather fabric substrate 1. The winding roller 77 is used to wind the superfine fiber leather fabric substrate 1 after surface coating. The unwinding roller 78 cooperates with the winding roller 77 to feed. In the initial state, the fixed guide roller 2 and the movable guide roller 3 are at the same horizontal height, and the coating roller group 4 is lower than the fixed guide roller 2, so that the coating roller group 4 is at a certain distance from the superfine fiber leather fabric substrate 1. When it is necessary to coat the superfine fiber leather fabric substrate 1, as Figure 4As shown in (b) therein, the lifting cylinder 18 of the coating roller set 4 extends, driving the upper surface of the coating roller set 4 to be flush with the upper surface of the fixed guide roller 2. At the same time, the movable guide roller 3 is driven to slide downward, so that the movable guide roller 3 moves away from the ultra-fine fiber leather fabric substrate 1. Then, the first L-shaped support plate 20 and the second L-shaped support plate 21 are driven to approach each other, and the first inner sliding column 12 and the second inner sliding column 15 extrude the coating liquid in the outer sleeve 9. The extruded coating liquid converges towards the surface of the first hollow cylinder 27. At the same time, part of the coating liquid is ejected from the outer longitudinal through hole 49 through the fan-shaped blind hole two 55 and the fan-shaped blind hole one 48, so as to avoid that only the middle part has coating liquid when the first inner sliding column 12 and the second inner sliding column 15 are extruded inward. The first inner sliding column 12 and the second inner sliding column 15 approaching each other drive the end arc plate one 43 at the ends of the first cable assembly 25 and the second cable assembly 26 to slide outward, and then pull the movable outer ring 32 to slide outward. The first spring and the second spring arranged between the movable outer ring 32 and the movable inner ring 31 are stretched and deformed, and then drive the movable inner ring 31 to also slide outward, so that the rolling ring set 22 changes from the retracted state to the unfolded state, and the transverse strip hole group 23 and the longitudinal strip hole group 24 are communicated to form a plurality of coating liquid spray outlets. Due to the extrusion of the first inner sliding column 12 and the second inner sliding column 15, the coating liquid can be sprayed onto the ultra-fine fiber leather fabric substrate 1 at a certain speed. At this time, the winding roller 77 is simultaneously driven to wind, so that the ultra-fine fiber leather fabric substrate 1 moves towards the winding roller 77 at a certain speed. In addition, the movable outer ring 32 and the movable inner ring 31 sliding outward can unfold the ultra-fine fiber leather fabric substrate 1 to prevent wrinkles or folded parts on the surface of the ultra-fine fiber leather fabric substrate 1 from affecting the coating effect, and can make the coating effect better. After the rolling ring set 22 is unfolded to the maximum position (that is, the edge of the movable inner ring 31 is located at the edge position of the movable outer ring 32, and the edge of the fixed inner ring 30 is located at the edge position of the movable outer ring, and this position can be obtained by detecting with a distance sensor or a limit sensor), the first L-shaped support plate 20 and the second L-shaped support plate 21 stop operating, the winding roller 77 stops winding, the movable guide roller 3 slides upward, so that the upper surface of the movable guide roller 3 is flush with the upper surface of the fixed guide roller 2, the lifting cylinder 18 retracts, the coating roller set 4 disengages from the ultra-fine fiber leather fabric substrate 1, then the compensation cylinder 64 of the cable length adjustment assembly 63 retracts, the cable 44 is relaxed, the first spring and the second spring retract, and the movable inner ring 31 and the movable outer ring 32 slide inward and retract. Finally, as Figure 5As shown, in the retracted state, the transverse strip-shaped hole group 23 and the longitudinal strip-shaped hole group 24 are in a closed state. Then, the lifting cylinder 18 is driven to extend, so that the coating roller group 4 is closely attached to the ultra-fine leather fabric substrate 1. The moving guide roller 3 is driven to slide downward to disengage from the ultra-fine leather fabric substrate 1. The first inner sliding column 12 and the second inner sliding column 15 are continuously driven to move closer inward. At the same time, the winding roller 77 is again driven to perform a winding operation to continue completing the coating operation, and so on; after the first inner sliding column 12 and the second inner sliding column 15 are closely attached, the driving cylinder 1 8 can be continuously extended to drive the first inner piston sleeve 11 and the second inner piston sleeve 14 to continue sliding inward, continuously squeezing the coating liquid in the outer sleeve 9. The coating liquid can enter the outer longitudinal through hole 2 56 through the fan-shaped blind hole 2 55 and reach the longitudinal strip-shaped hole group 24; after the first inner piston sleeve 11 and the second inner piston sleeve 14 are in mutual contact, the driving cylinder 2 61 continues to retract, driving the first outer piston sleeve 10 and the second outer piston sleeve 13 to squeeze the coating liquid in the outer sleeve 9 inward. The coating liquid enters the outer longitudinal through hole 1 49 after passing through the fan-shaped blind hole 1 48 and finally reaches the longitudinal strip-shaped hole group 24. Since the fixed inner ring 30 and the movable outer ring 32, and the movable inner ring 31 and the movable outer ring 32 are connected by springs, the rotation of each movable inner ring and movable outer ring is linked. Through this kind of movement coating method, it can also ensure that when coating and operating on relatively wide leather, due to the linked rotation between each movable inner ring and movable outer ring, it can also prevent the leather from shifting to the greatest extent and can better perform the coating of ultra-fine leather. Example 2

[0067] A waterproof, breathable and highly wear-resistant ultra-fine leather is also provided. The waterproof, breathable and highly wear-resistant ultra-fine leather is made by the ultra-fine leather coater of Example 1. The specific manufacturing process is as follows:

[0068] I. Preparation of wear-resistant layer coating:

[0069] Take an appropriate amount of polyurethane resin, then add an appropriate amount of alumina powder and silicon carbide powder, react at high temperature, and stir until the polyurethane resin is completely dissolved to form a uniform resin solution. Then add an appropriate amount of leveling agent and defoaming agent for mixing. Use a filter to filter the mixed coating to remove impurities and particles. Let the filtered coating stand at an appropriate temperature for ripening to form a wear-resistant layer coating. The composition of each material of the wear-resistant layer can be calculated by weight as follows: 100 parts of polyurethane resin, 20 parts of alumina, 20 parts of silicon carbide, 10 parts of leveling agent and 5 parts of defoaming agent;

[0070] II. Preparation of ultra-fine leather fabric substrate 1:

[0071] Using sea-island fiber non-woven fabric as the base material, impregnate the non-woven fabric using the wet process. The impregnating slurry includes polyurethane, dimethylformamide, and an oil-based water repellent. After wet coagulation, a sea-island fiber / polyurethane composite material is formed. Then, through fiber opening (such as alkali weight reduction or toluene weight reduction), a microfiber / polyurethane composite material, that is, the base material 1 of the microfiber leather fabric, is obtained. Among them, the water repellent is a mixture of an alkane long-chain fluorine-free water repellent and water, and the mass percentage of the alkane long-chain fluorine-free water repellent in the solution is 10-12%; due to the addition of the water repellent in the impregnating solution, the made microfiber synthetic leather has high air permeability, water vapor permeability, and waterproof performance.

[0072] III. Coating application:

[0073] Add the wear-resistant layer coating obtained in Step 1 to the coating roller set 4 of the microfiber leather coater, so that the base material 1 of the microfiber leather fabric passes through the coating roller set 4, extrude the first piston assembly 16 and the second piston assembly 17, so that the rolling ring set 22 changes from the retracted state to the expanded state. The rolling ring set 22 horizontally stretches the base material 1 of the microfiber leather fabric. At the same time, the coating is sprayed out from a number of through holes formed by the connected horizontal strip-shaped hole group 23 and the vertical strip-shaped hole group 24 to coat the base material 1 of the microfiber leather fabric, forming a waterproof and breathable high-wear-resistant microfiber leather.

[0074] Furthermore, for the impregnating slurry in Step 2: the weight fractions of each component are as follows: polyurethane, dimethylformamide, and an oil-based water repellent, in the weight parts of 100:50:3 in sequence.

[0075] The above has described the present invention in detail. The purpose is to enable those skilled in this field to understand the content of the present invention and implement it. However, it cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit and essence of the present invention should be covered within the protection scope of the present invention.

Claims

1. A microfiber leather applicator, comprising: A coating roller group (4) and a base (5), wherein the coating roller group (4) can be lifted and moved in the vertical direction of the base (5), and is characterized in that: the coating roller group (4) includes a lifting support frame group (6) and a coating sleeve assembly (7), and the coating sleeve assembly (7) includes an outer sleeve (9), a first piston assembly (16), a second piston assembly (17), a first pull rope assembly (25), a second pull rope assembly (26) and a rolling ring assembly (22), and the outer sleeve (9) includes a hollow cylinder (27), and in the hollow cylinder (27 ) is provided with a longitudinal strip hole group (24) on the side wall, the rolling ring group (22) is rotatably arranged on the outside of the outer sleeve (9), and the rolling ring group (22) is provided with a transverse strip hole group (23), one end of the first piston assembly (16) is slidably arranged on the left side of the outer sleeve (9), and the other end of the first piston assembly (16) is connected to one end of the lifting support frame group (6), one end of the second piston assembly (17) is slidably arranged on the right side of the outer sleeve (9), and the other end of the second piston assembly (17) is connected to the lifting support frame group (6). The other end of the lifting support frame group (6), one end of the first pull rope assembly (25) is connected to the first piston assembly (16), and the other end is connected to one side of the rolling ring group (22); one end of the second pull rope assembly (26) is connected to the second piston assembly (17), and the other end is connected to the other side of the rolling ring group (22); when the lifting support frame group (6) is laterally retracted, the coating roller group (4) is in a coating state, and the first pull rope assembly (25) and the second pull rope assembly (26) pull the rolling ring group (22) to expand. The transverse strip hole group (23) is connected to the longitudinal strip hole group (24), and the rolling ring group (22) stretches the microfiber leather fabric base material (1), so that the coating liquid in the hollow cylinder (27) can be coated on the surface of the microfiber leather fabric base material (1). After the rolling ring group (22) is unfolded, the coating roller group (4) descends and leaves the surface of the microfiber leather fabric base material (1), and the coating roller group (4) is in a reset state, the rolling ring group (22) contracts, and the transverse strip hole group (23) and the longitudinal strip hole group (24) are closed.

2. The microfiber leather applicator according to claim 1, characterized in that: The invention also comprises a fixed guide roller (2) and a movable guide roller (3), wherein the fixed guide roller (2), the coating roller group (4) and the movable guide roller (3) are arranged in sequence in a transverse direction along the base (5), and the movable guide roller (3) can be lifted and moved along the vertical direction of the base (5); the lifting support frame group (6) comprises a lifting cylinder (18), a fixed support plate (19), a first L-shaped support plate (20) and a second L-shaped support plate (21), wherein the fixed support plate (19) is arranged at the upper end of the lifting cylinder (18), the first L-shaped support plate (20) and the second L-shaped support plate (21) are slidably arranged at the two ends of the fixed support plate (19), the first L-shaped support plate (20) is connected to the first piston assembly (16), and the second L-shaped support plate (21) is connected to the first piston assembly (16). The second piston assembly (17) is connected, and when the lifting cylinder (18) is extended, the coating roller group (4) can be driven to approach the microfiber leather fabric substrate (1). At the same time, the movable guide roller (3) moves downward away from the microfiber leather fabric substrate (1), and the first L-shaped support plate (20) and the second L-shaped support plate (21) continue to approach each other, so that the coating roller group (4) is in a coating state. When the coating roller group (4) is in a reset state, the microfiber leather fabric substrate (1) is supported by the fixed guide roller (2) and the movable guide roller (3).

3. The microfiber leather applicator according to claim 2, characterized in that: The pull rope (44) of the first pull rope assembly (25) and the pull rope (44) of the second pull rope assembly (26) are both wound with a rope length adjustment assembly (63), the rope length adjustment assembly (63) comprising a first rope wheel (65), a second rope wheel (66), a third rope wheel (67) and a compensation cylinder (64), the second rope wheel (66) being arranged at the end of the compensation cylinder (64), the first rope wheel (65) and the third rope wheel (67) being arranged at both ends of the compensation cylinder (64), the first rope wheel (65), the second rope wheel (66) and the third rope wheel (67) being arranged in a herringbone shape, and the pull rope (44) is horizontally wound around the rope wheel (65). After passing the first rope wheel (65), it is wound upwardly on the second rope wheel (66), then passes downwardly through the third rope wheel (67), and finally is wound horizontally out of the third rope wheel (67). The compensation cylinder (64) is in an extended state. When the first L-shaped support plate (20) and the second L-shaped support plate (21) move inwardly, the compensation cylinder (64) is in a locked state. When the first L-shaped support plate (20) and the second L-shaped support plate (21) stop and the rolling ring group (22) needs to be reset, the compensation cylinder (64) is retracted, so that the pull rope (44) is in a relaxed state and the rolling ring group (22) is retracted and reset.

4. The microfiber leather applicator according to claim 3, characterized in that: The rolling ring group (22) includes a fixed inner ring (30), a plurality of movable inner rings (31) and a plurality of movable outer rings (32). The fixed inner ring (30) can rotate around the axial direction of the outer sleeve (9) but cannot slide along the axial direction of the outer sleeve (9). The fixed inner ring (30) is rotatably arranged at the center of the outer sleeve (9). Along the axial direction extending from the center of the outer sleeve (9) to both ends, the movable outer ring (32), the movable inner ring (31) and the movable outer ring (32) are repeatedly arranged in sequence. The left end and the right end of the fixed inner ring (30) are connected to the adjacent movable outer rings (32) through a plurality of first springs, and the left end and the right end of the movable inner ring (31) are connected to the adjacent movable outer rings (32) through a plurality of second springs. The first spring and the second spring are in a contracted state in an initial state. In this way, the rolling ring group (22) can be in a contracted state in an initial state. In the retracted state, the fixed inner ring (30) and the movable inner ring (31) are both inside the movable outer ring (32), and the plurality of movable outer rings (32) are close to each other. The first drawstring assembly (25) is slidably arranged on the left side of the leftmost movable outer ring (32), and the second drawstring assembly (26) is slidably arranged on the right side of the rightmost movable outer ring (32). By pulling the first drawstring assembly (25) and the second drawstring assembly (26), the movable outer ring (32) and the movable inner ring (31), and the fixed inner ring (30) and the movable outer ring (32) are unfolded by overcoming the elastic force of the first spring and the second spring, so that the rolling ring group (22) is in the unfolded state. At this time, the adjacent movable outer rings (32) are separated from each other, exposing the movable inner ring (31). The sliding of the movable outer ring (32) and the movable inner ring (31) can stretch the tightly attached microfiber leather fabric substrate (1).

5. The microfiber leather applicator according to claim 4, characterized in that: The movable outer ring (32) includes a ring body 1 (33), and a plurality of first transverse strip holes (34) are arranged on the circumferential side of the ring body 1 (33); the fixed inner ring (30) includes a ring body 2 (37), and a plurality of second transverse strip holes (38) are arranged on the circumferential side of the ring body 2 (37); the movable inner ring (31) includes a ring body 3 (40), and a plurality of third transverse strip holes (41) are arranged on the circumferential side of the ring body 3 (40); the first transverse strip holes (34), the second transverse strip holes (38) and the third transverse strip holes (41) form the transverse strip hole group (23).

6. The microfiber leather applicator according to claim 5, characterized in that: An intermediate limiting ring platform (42) is arranged on the outer periphery of the hollow cylinder body (27) and at the center of the hollow cylinder body (27); an annular limiting groove (39) is arranged at the inner center of the ring body (37); the intermediate limiting ring platform (42) is accommodated in the annular limiting groove (39); and an inner through hole (57) is arranged in the hollow cylinder body (27) and passes through the left and right sides of the hollow cylinder body (27).

7. The microfiber leather applicator according to claim 6, characterized in that: The first piston assembly (16) comprises a first inner sliding column (12), a first inner piston sleeve (11) and a first outer piston sleeve (10); the second piston assembly (17) comprises a second inner sliding column (15), a second inner piston sleeve (14) and a second outer piston sleeve (13); the first inner piston sleeve (11) is sleeved on the outside of the first inner sliding column (12); the first outer piston sleeve (10) is sleeved on the outside of the first inner piston sleeve (11); the first outer piston sleeve (10) passes through the left side of the hollow cylinder (27); the second inner piston sleeve (14) is sleeved on the outside of the second inner sliding column (15); the second outer piston sleeve (13) is sleeved on the outside of the second inner piston sleeve (14); the second outer piston sleeve (13) passes through the right side of the hollow cylinder (27).

8. The microfiber leather applicator according to claim 7, characterized in that: The first pull rope assembly (25) and the second pull rope assembly (26) have the same structure, and both include an end arc plate (43), the pull rope (44) and the cable length adjustment assembly (63). One end of the end arc plate (43) is slidably arranged on the left end of the leftmost movable outer ring (32) or the right end of the rightmost movable outer ring (32). The other end of the end arc plate (43) is connected to one end of the pull rope (44). The other end of the pull rope (44) is connected to the first inner sliding column (12) or the second inner sliding column (15). The pull rope (44) passes through the cable length adjustment assembly (63). The cable length adjustment assembly (63) is arranged on the outer sleeve (9).

9. The microfiber leather applicator according to claim 7 or 8, characterized in that: The first outer piston sleeve (10) and the second outer piston sleeve (13) have the same structure, and both include a hollow cylinder body (47), a first support rod (51), a second support rod (52), a connecting shaft (53) and a first guide pulley (45). An inner through hole (58) is provided in the hollow cylinder body (47). A fan-shaped blind hole (48) is provided axially at the side wall of the hollow cylinder body (47). At the fan-shaped blind hole (48), an outer longitudinal through hole (49) and an inner longitudinal through hole (50) are provided in sequence on the hollow cylinder body (47) along the radial direction. The first support rod (51) and the second support rod (52) are respectively arranged on the outer side of the hollow cylinder body (47). The first support rod (51) and the second support rod (52) are clamped at both ends of the outer longitudinal through hole (49). The two ends of the connecting shaft (53) are respectively fixedly provided. At the upper ends of the first support rod (51) and the second support rod (52), the first guide pulley (45) is rotatably arranged on the connecting shaft (53), and the pull rope (44) is guided by the first guide pulley (45); the first inner piston sleeve (11) and the second inner piston sleeve (14) have the same structure, both comprising a hollow cylinder three (54), an inner through hole three (59) is opened on the inner side of the hollow cylinder three (54), a fan-shaped blind hole two (55) is opened axially at the side wall of the hollow cylinder three (54), and an outer longitudinal through hole two (56) is opened on the outer side of the hollow cylinder three (54) along the radial direction at the fan-shaped blind hole two (55), and a second guide pulley (46) is arranged at one end of the hollow cylinder three (54) away from the opening of the fan-shaped blind hole two (55), and the pull rope (44) is guided by the second guide pulley (46).

Images