An aqueous crease-free ultra-fine leather processing device and its preparation method

Abstract

An aqueous crease-free ultra-fine leather processing device and its preparation method of the present invention belong to the technical field of fabric surface treatment. The processing device includes a first fabric stretching, rectifying and guiding roller group and a second fabric stretching, rectifying and guiding roller group, which can stretch the wrinkles formed on the surface of the ultra-fine non-woven fabric to ensure that the ultra-fine leather has no creases. There are also hole channels for the passage of aqueous slurry formed on the surfaces of the first fabric stretching, rectifying and guiding roller group and the second fabric stretching, rectifying and guiding roller group, so that the impregnation effect on the surface of the ultra-fine non-woven fabric is better. Both the first fabric stretching, rectifying and guiding roller group and the second fabric stretching, rectifying and guiding roller group include a left fabric stretching and guiding roller group and a right fabric stretching and guiding roller group arranged in parallel. Both the left fabric stretching and guiding roller group and the right fabric stretching and guiding roller group include a vertically rotating vertical rotating belt and a horizontally rotating horizontal rotating belt. By adjusting the rotation speeds of the two vertical rotating belts, the non-woven fabric can be rectified.

Description

Technical Field

[0001] The present invention relates to the technical field of fabric surface treatment, and particularly relates to an aqueous non-creased ultra-fine leather treatment device and a preparation method thereof. Background Art

[0002] Due to its realistic imitation leather effect, ultra-fine leather is widely used in various fields such as shoes and luggage for daily use. In order to improve the performance of ultra-fine leather, it is usually necessary to impregnate or coat the surface of ultra-fine leather. Existing fabric surface coating devices, such as Patent Document 1 (CN115463787A) which discloses a coating device for mesh leather fabric. When treating the surface of the mesh leather fabric, a number of fixed rollers are provided on both the upper and lower sides of the fabric. The air-liquid mixture is sprayed onto the base fabric by the rotation of the fixed rollers to impact and impregnate the base fabric, and then the thickness of the fabric is controlled by a scraper. Although this method can improve the effect of the coating liquid entering the base fabric, since the fabric is impacted by multiple fixed rollers, the base fabric may wrinkle or shift during winding, which affects the subsequent operations of the fabric and also the quality of the formed fabric. Another example is the preparation device for aqueous ultra-fine synthetic leather disclosed in Patent Document 2 (CN112695542A). The ultra-fine fiber non-woven fabric is wound around a lifting frame with an extrusion roller and a clamping roller, and the lifting frame can move horizontally. By placing the lifting frame in an impregnation tank and controlling the horizontal and vertical movements of the lifting frame in the impregnation tank, the impregnation operation of the non-woven fabric is achieved. Since the non-woven fabric is wound around the lifting frame and moves in the aqueous slurry, it may also wrinkle or shift, ultimately affecting the quality of the fabric. Finally, for example, the tie-dye production device for ultra-fine fiber leather disclosed in Patent Document 3 (CN116732728A) passes the fiber leather body into an oil tank through a number of guide rollers, and after impregnation, it is passed into an oven for drying. Before drying, a detection mechanism is provided, which includes a pressure wheel and a material-straightening plate. When the leather body wrinkles and folds, the pressure wheel swings, causing the material-straightening plate to move horizontally to flatten the wrinkles at the edge of the leather body. However, since the leather is flexible, there is a risk of misoperation of the pressure wheel, resulting in low detection accuracy. In addition, it can only flatten the wrinkles and folds, and cannot correct the skewing of the leather. If the leather needs to be corrected, an additional leather correction device needs to be set up.

[0003] In summary, for the surface treatment of ultra-fine fiber leather in the prior art, although there is a technical solution of setting a number of fixed rollers capable of spraying impregnating liquid on the surface of the fabric, it does not consider that the impact of the impregnating liquid plus the rotation of the rollers may cause the fabric to wrinkle or even cause the fabric to deviate during operation on the rollers. Further, even if the case of fabric wrinkling is considered, only an additional wrinkle flattening device or an additional fabric deviation correction device is added, making the device more complex. Therefore, the present invention provides a support plate group with penetrable holes that can change in real time, which can still keep the fabric in a stable transportation process when the impregnating liquid impacts the fabric, and can stably support the back of the fabric. In addition, the support plate group can not only stretch the wrinkles of the fabric, but also timely correct the fabric when it is inclined during transmission, as well as a water-based non-crease ultra-fine fiber leather treatment device and its preparation method. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a water-based non-crease ultra-fine fiber leather treatment device, which includes: a surface treatment tank filled with water-based slurry, an impregnation guide roller, a first fabric stretching and deviation correction guide roller group, and a second fabric stretching and deviation correction guide roller group are arranged on the surface treatment tank. A slurry spraying roller group is arranged at the side ends of the first fabric stretching and deviation correction guide roller group and the second fabric stretching and deviation correction guide roller group. The ultra-fine non-woven fabric passes downward through the impregnation guide roller and then immerses into the water-based slurry, and then winds upward around the upper end of the first fabric stretching and deviation correction guide roller group, and then winds downward around the lower end of the second fabric stretching and deviation correction guide roller group, and then is led out from the surface treatment tank. When the first fabric stretching and deviation correction guide roller group and the second fabric stretching and deviation correction guide roller group spray water-based slurry, they can support and be arranged inside the ultra-fine non-woven fabric, and at the same time provide a hole channel for the water-based slurry to penetrate. Both the first fabric stretching and deviation correction guide roller group and the second fabric stretching and deviation correction guide roller group include a left fabric stretching guide roller group and a right fabric stretching guide roller group arranged in parallel. Both the left fabric stretching guide roller group and the right fabric stretching guide roller group include a vertical rotating belt and a horizontal rotating belt. A number of first hollow long grooves are arranged on the vertical rotating belt, and a number of second hollow long grooves are arranged on the horizontal rotating belt. The vertical rotating belt can rotate vertically, and the horizontal rotating belt can rotate horizontally. The horizontal rotating belt and the vertical rotating belt are cross-encircled and arranged, and one end of the horizontal rotating belt is attached to the outside of the vertical rotating belt, and the other end of the horizontal rotating belt is attached to the inside of the vertical rotating belt. The moving direction of the horizontal rotating belt attached to the outside of the vertical rotating belt is from the center of the ultra-fine non-woven fabric towards the edge, so as to stretch the wrinkles formed by the ultra-fine non-woven fabric.

[0005] Preferably, a feed guiding roller and an extrusion roller group are further arranged on the surface treatment tank. The ultra-fine fiber non-woven fabric is guided by the feed guiding roller and enters the surface treatment tank. If the ultra-fine fiber non-woven fabric is deflected, the deviation adjustment of the ultra-fine fiber non-woven fabric is realized by controlling the rotation speeds of the vertical rotation belts of the left fabric stretching and guiding roller group and the right fabric stretching and guiding roller group. The mutually-fitted first hollow long groove and the second hollow long groove form the hole channel. The vertical rotation belt is guided by the first horizontal roller group to realize vertical rotation, and the horizontal rotation belt is guided by the second vertical roller group to realize horizontal rotation.

[0006] Preferably, the first horizontal roller group includes a first upper horizontal roller and a first lower horizontal roller. The vertical rotation belt is wound around between the first upper horizontal roller and the first lower horizontal roller. The second vertical roller group includes a front vertical roller one, a front vertical roller two, a rear vertical roller one, and a rear vertical roller two. The horizontal rotation belt is wound around the outside of the front vertical roller one, the front vertical roller two, the rear vertical roller one, and the rear vertical roller two.

[0007] Preferably, the vertical rotation belt includes a belt body one and the several first hollow long grooves arranged on the belt body one. The belt body one includes a first vertical front section, a third upper semi-circular section, a second vertical rear section, and a fourth lower semi-circular section connected in sequence. The belt body one forms a closed loop one by the first vertical front section, the third upper semi-circular section, the second vertical rear section, and the fourth lower semi-circular section. The horizontal rotation belt includes a belt body two and the several second hollow long grooves arranged on the belt body two. The belt body two includes a first horizontal front section, a third horizontal side section, a second horizontal rear section, and a fourth horizontal side section connected in sequence. The belt body two forms a closed loop two by the first horizontal front section, the third horizontal side section, the second horizontal rear section, and the fourth horizontal side section. The fact that the horizontal rotation belt and the vertical rotation belt are arranged in a mutually-crossed and looped manner means that the closed loop one and the closed loop two are mutually buckled.

[0008] Preferably, when the horizontal rotation belt and the vertical rotation belt are arranged in a mutually-crossed and looped manner, the inner side of the first horizontal front section is attached to the outer side of the first vertical front section, and the outer side of the second horizontal rear section is attached to the inner side of the second vertical rear section.

[0009] Preferably, an intermediate guide roller group is further provided between the left fabric stretching guide roller group and the right fabric stretching guide roller group. The intermediate guide roller group includes an upper drive roller group and a lower drive roller group. Both the upper drive roller group and the lower drive roller group include an inner turning roller, a first drive rotating shaft, a second drive rotating shaft, and an outer drive wheel ring. One end of the first drive rotating shaft is inserted into the first upper horizontal guide roller of the left fabric stretching guide roller group, and the other end is arranged inside the inner turning roller. One end of the second drive rotating shaft is inserted into the first upper horizontal guide roller of the right fabric stretching guide roller group, and the other end is arranged inside the inner turning roller. The outer drive wheel ring is rotatably arranged outside the inner turning roller.

[0010] Preferably, the driving mode of the upper drive roller group and the lower drive roller group is that the upper drive roller group or the lower drive roller group at the end far from the winding of the ultra-fine fiber non-woven fabric is the power output end, and the lower drive roller group or the upper drive roller group at the other end close to the winding of the ultra-fine fiber non-woven fabric is the driven end. The inner turning roller of the power output end is fixedly arranged in the surface treatment tank. A first motor capable of driving the first drive rotating shaft to rotate and a second motor capable of driving the second drive rotating shaft to rotate are respectively arranged inside the inner turning roller. A third motor capable of driving the outer drive wheel ring to rotate is arranged outside the inner turning roller.

[0011] Preferably, the driving mode of the upper drive roller group and the lower drive roller group is that both the upper drive roller group and the lower drive roller group are used as power output ends, or the upper drive roller group or the lower drive roller group is used as the power output end. The first drive rotating shaft and the second drive rotating shaft pass through the side wall of the surface treatment tank. A fourth motor for driving the first drive rotating shaft to rotate and a fifth motor for driving the second drive rotating shaft to rotate are respectively arranged on the side wall. A clutch capable of engaging or disengaging with the first drive rotating shaft and the second drive rotating shaft is arranged inside the inner turning roller. A sixth motor for driving the outer drive wheel ring to rotate is arranged outside the inner turning roller.

[0012] Preferably, the slurry spraying roller group includes a first left slurry spraying roller group and a first right slurry spraying roller group arranged at both ends of the first fabric stretching and deviation correcting guide roller group, and a second left slurry spraying roller group and a second right slurry spraying roller group arranged at both ends of the second fabric stretching and deviation correcting guide roller group. The first left slurry spraying roller group, the first right slurry spraying roller group, the second left slurry spraying roller group, and the second right slurry spraying roller group all include an outer jacket and an inner spray pipe rotatably arranged inside. The outer jacket includes an arc-shaped plate, a first side plate, and a second side plate. The first side plate and the second side plate are arranged on both sides of the arc-shaped plate. An arc-shaped spray port is formed on the arc-shaped plate. The water-based slurry sprayed from the inner spray pipe can be sprayed onto the ultra-fine fiber non-woven fabric through the arc-shaped spray port.

[0013] Preferably, a method for preparing water-based crease-free ultra-fine leather is further provided. The preparation method includes the following steps:

[0014] a. Impregnation:

[0015] Unwind the ultra-fine fiber non-woven fabric from the unwinding roller, wind it into the water-based crease-free ultra-fine fiber leather processing equipment, then add water-based slurry into the surface treatment tank, start the first fabric stretching and deviation correcting guide roller group and the second fabric stretching and deviation correcting guide roller group to rotate. At the same time, start the spraying roller group to impregnate the ultra-fine fiber non-woven fabric. After impregnation, the ultra-fine fiber non-woven fabric passes through the squeezing roller group and then enters the oven for drying. The dried ultra-fine fiber non-woven fabric is wound by the winding roller to obtain a semi-finished synthetic leather;

[0016] b. Alkali weight reduction treatment:

[0017] Put the semi-finished synthetic leather into a 3% sodium hydroxide aqueous solution for alkali weight reduction treatment, and finally obtain the water-based crease-free ultra-fine fiber leather.

[0018] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0019] 1. The water-based crease-free ultra-fine fiber leather processing equipment of the present invention includes a first fabric stretching and deviation correcting guide roller group and a second fabric stretching and deviation correcting guide roller group. When guiding the ultra-fine fiber non-woven fabric, it can stretch the wrinkles formed on the surface of the ultra-fine fiber non-woven fabric. In addition, when the ultra-fine fiber non-woven fabric is skewed, it can correct the deviation in time. In addition, it can be used in cooperation with the spraying roller group and can play a supporting role for the non-woven fabric on the other side of the spraying roller group, so as to avoid the non-woven fabric from wrinkling when the spraying roller group performs spraying operations. In addition, the first fabric stretching and deviation correcting guide roller group and the second fabric stretching and deviation correcting guide roller group are also formed with hole channels for the water-based slurry to pass through on the surface, which can make the impregnation effect on the surface of the ultra-fine fiber non-woven fabric better. In addition, the hole channels are dynamically changed, thereby avoiding the defect that some surfaces of the ultra-fine fiber non-woven fabric are not impregnated;

[0020] 2. The first fabric stretching and deviation correcting guide roller group and the second fabric stretching and deviation correcting guide roller group of the present invention both include a left fabric stretching guide roller group and a right fabric stretching guide roller group arranged in parallel. The left fabric stretching guide roller group and the right fabric stretching guide roller group both include a vertically rotating vertical rotating belt and a horizontally rotating horizontal rotating belt. The first hollow long groove is arranged on the vertical rotating belt, and the second hollow long groove is arranged on the horizontal rotating belt. The vertical rotating belt and the horizontal rotating belt are buckled and fitted with each other, so that a hole channel with a continuously moving position is formed between the first hollow long groove and the second hollow long groove, which can make the water-based slurry sprayed by the spraying roller group pass through more smoothly. The movement of the two horizontally rotating belts moving away from each other can stretch the wrinkles on the surface of the ultra-fine fiber non-woven fabric when contacting the ultra-fine fiber non-woven fabric, ensuring that the ultra-fine fiber leather has no creases. In addition, the two vertically rotating belts arranged in parallel can correct the deviation of the non-woven fabric by adjusting the rotation speed of the two vertically rotating belts when the non-woven fabric is transported obliquely;

[0021] 3. The first fabric stretching and deviation correcting guide roller group and the second fabric stretching and deviation correcting guide roller group of the present invention integrate three functions of non-woven fabric guiding, surface wrinkle stretching of non-woven fabric, and deviation correction of non-woven fabric. Compared with the existing structures with single functions of non-woven fabric guiding, surface wrinkle stretching of non-woven fabric, and non-woven fabric deviation correction, the structure layout can be made more compact. At the same time, since the lower ends of both the first fabric stretching and deviation correcting guide roller group and the second fabric stretching and deviation correcting guide roller group are immersed in the aqueous slurry, the vertically rotating vertical rotating belt can store part of the aqueous slurry through the first elongated slot, so that there is also aqueous slurry on the side in contact with the non-woven fabric, which can further increase the contact between the non-woven fabric and the aqueous slurry. In addition, since one side of the horizontal rotating belt is arranged at the outer end of the vertical rotating belt and the other side is arranged at the inner end of the vertical rotating belt, therefore, as long as the two horizontal rotating belts rotate in opposite directions in one direction, they can continuously horizontally stretch the surface of the non-woven fabric without worrying about squeezing the surface of the non-woven fabric in the other direction, and the position of the hole channel also moves continuously;

[0022] 4. In order to better improve the impregnation effect, a partition plate is also arranged in the surface treatment tank along the axis direction of the feed guide roller. The space in the surface treatment tank is divided into a first immersion liquid chamber and a second immersion liquid chamber by the partition plate, and the height of the aqueous slurry in the first immersion liquid chamber is different from the height of the aqueous slurry in the second immersion liquid chamber. In order to enable the non-woven fabric in the first immersion liquid chamber to be fully impregnated, the height of the aqueous slurry in the first immersion liquid chamber is higher than the height of the aqueous slurry in the second immersion liquid chamber. This can balance the actions of the first immersion liquid chamber, the second immersion liquid chamber, and the spraying roller group and the impregnation operation, making the impregnation effect of the non-woven fabric better. In addition, the first fabric stretching and deviation correcting guide roller group and the second fabric stretching and deviation correcting guide roller group cooperate with the transmission of the second guiding and pressing roller and the third guiding and pressing roller, and can perform spraying treatment on both sides of the superfine non-woven fabric, which can better improve the impregnation effect;

[0023] 5. Finally, the continuously moving vertical rotating belt and horizontal rotating belt can not only make the position of the hole channel move continuously, but also avoid the blockage of the hole channel, enabling the slurry sprayed by the spraying roller group to pass through smoothly, thereby improving the impregnation effect of the non-woven fabric. In addition, both the first elongated slot and the second elongated slot are flat-shaped, and the first elongated slot and the second elongated slot are perpendicular to each other. When the vertical rotating belt and the horizontal rotating belt are folded, the holes formed by them are all square holes, which can provide a constant hole with a constantly changing position but a constant hole size, thus ensuring that the amount of aqueous slurry passing through during the spraying operation of the spraying component is also uniform. Description of the Drawings

[0024] Figure 1 is a three-dimensional view of the aqueous non-creased superfine leather treatment equipment of the present application;

[0025] Figure 2 In (a) is the front view of the water-based non-crease superfine leather processing equipment, (b) is the side view of the water-based non-crease superfine leather processing equipment, and (c) is the structural schematic diagram of the water-based non-crease superfine leather processing equipment;

[0026] Figure 3 is Figure 2 the A-A cross-sectional view of (b) in;

[0027] Figure 4 is the structural schematic diagram of the first fabric stretching and deviation correcting guide wheel group or the second fabric stretching and deviation correcting guide wheel group;

[0028] Figure 5 is the exploded schematic diagram of the first fabric stretching and deviation correcting guide wheel group or the second fabric stretching and deviation correcting guide wheel group;

[0029] Figure 6 In (a) is the structural schematic diagram of the left fabric stretching guide roller group or the right fabric stretching guide roller group, and (b) is the side view of the left fabric stretching guide roller group or the right fabric stretching guide roller group;

[0030] Figure 7 is the exploded schematic diagram of the left fabric stretching guide roller group or the right fabric stretching guide roller group;

[0031] Figure 8 In (a) is the front view of the vertical rotating belt, and (b) is the side view of the vertical rotating belt;

[0032] Figure 9 In (a) is the front view of the horizontal rotating belt, and (b) is the top view of the horizontal rotating belt;

[0033] Figure 10 In (a) is Figure 8 the enlarged view B of (a) in, and (b) is Figure 9 the enlarged view C of (a) in;

[0034] Figure 11 In (a) is the front view of the spraying roller group, (b) is the D-D cross-sectional view of (a), and (c) is the structural schematic diagram of the spraying roller group;

[0035] Figure 12 In (a) is the front view of the inner spray pipe, and (b) is the E-E cross-sectional view of (a);

[0036] Figure 13 In (a) is the structural schematic of the surface treatment tank Figure 1 and (b) is the structural schematic of the surface treatment tank Figure 2 .

[0037] Among them, 1. ultra-fine fiber non-woven fabric; 2. surface treatment tank; 3. water-based slurry; 4. first fabric stretching and deviation correcting guide roller group; 5. second fabric stretching and deviation correcting guide roller group; 6. first left spraying roller group; 7. first right spraying roller group; 8. second left spraying roller group; 9. second right spraying roller group; 10. extrusion roller group; 11. feeding guide roller; 12. impregnation guide roller; 13. left fabric stretching guide roller group; 14. right fabric stretching guide roller group; 15. first upper horizontal guide roller; 16. first lower horizontal guide roller; 17. vertical rotating belt; 18. second vertical guide roller group; 19. first horizontal guide roller group; 20. horizontal rotating belt; 21. first hollow long groove; 22. second hollow long groove; 23. belt body one; 24. first vertical front end segment; 25. second vertical rear end segment; 26. third upper semi-circular segment; 27. fourth lower semi-circular segment; 28. belt body two; 29. first horizontal front end segment; 30. second horizontal rear end segment; 31. third horizontal side end segment; 32. fourth horizontal side end segment; 33. front vertical guide roller one; 34. front vertical guide roller two; 35. rear vertical guide roller one; 36. rear vertical guide roller two; 37. intermediate guide roller group; 38. inner turning roller; 39. first driving rotating shaft; 40. second driving rotating shaft; 41. outer driving wheel ring; 42. outer jacket; 43. inner spray pipe; 44. arc plate; 45. first side plate; 46. second side plate; 47. arc-shaped spray nozzle; 48. hollow pipe body; 49. spray hole; 50. first liquid inlet end; 51. second liquid inlet end; 52. partition plate; 53. first immersion liquid cavity; 54. second immersion liquid cavity; 55. first guiding and pressing roller; 56. second guiding and pressing roller; 57. third guiding and pressing roller; 58. fourth guiding and pressing roller. Detailed implementation mode

[0038] 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 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.

[0039] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0040] As Figures 1 to 13 shown, a water-based non-crease ultra-fine leather processing device includes: a surface treatment tank 2, and a water-based slurry 3 is contained in the surface treatment tank 2, as Figures 1 to 3As shown in the figure, a feeding guide roller 11, an immersion guide roller 12, a first fabric stretching and deviation correcting guide roller group 4, a second fabric stretching and deviation correcting guide roller group 5 and a squeezing roller group 10 are sequentially arranged on the surface treatment tank 2 from left to right. The ultra-fine fiber non-woven fabric 1 is guided by the feeding guide roller 11 and enters into the surface treatment tank 2, passes downward through the immersion guide roller 12, then winds upward around the upper end of the first fabric stretching and deviation correcting guide roller group 4, then winds downward around the lower end of the second fabric stretching and deviation correcting guide roller group 5, and then passes upward through the squeezing roller group 10 and is led out of the surface treatment tank 2, as Figures 11 - 12 shown. It further includes a spraying roller group. The spraying roller group is arranged at the side ends of the first fabric stretching and deviation correcting guide roller group 4 and the second fabric stretching and deviation correcting guide roller group 5. After the ultra-fine fiber non-woven fabric 1 is led out of the aqueous slurry 3, it can also be sprayed onto the surface of the ultra-fine fiber non-woven fabric 1 by the spraying roller group. The first fabric stretching and deviation correcting guide roller group 4 and the second fabric stretching and deviation correcting guide roller group 5 can be supported and arranged inside the ultra-fine fiber non-woven fabric 1. While providing support for the ultra-fine fiber non-woven fabric 1, they also provide a pore channel through which the aqueous slurry 3 can penetrate. The first fabric stretching and deviation correcting guide roller group 4 and the second fabric stretching and deviation correcting guide roller group 5 have the same structure, and both include a left fabric stretching guide roller group 13 and a right fabric stretching guide roller group 14 arranged in parallel. The left fabric stretching guide roller group 13 and the right fabric stretching guide roller group 14 have the same structure, and both include a vertical rotating belt 17 and a horizontal rotating belt 20. A number of first hollow long grooves 21 are arranged on the vertical rotating belt 17, and a number of second hollow long grooves 22 are arranged on the horizontal rotating belt 20. The vertical rotating belt 17 can be guided by a first horizontal guide roller group 19 to rotate vertically, and the horizontal rotating belt 20 can be guided by a second vertical guide roller group 18 to rotate horizontally. The horizontal rotating belt 20 and the vertical rotating belt 17 are arranged in an intersecting and looped manner, and one end of the horizontal rotating belt 20 is attached to the outside of the vertical rotating belt 17, and the other end of the horizontal rotating belt 20 is attached to the inside of the vertical rotating belt 17. The movement mode of the horizontal rotating belt 20 of the left fabric stretching guide roller group 13 and the right fabric stretching guide roller group 14 is that the moving direction of the horizontal rotating belt 20 attached to the outside of the vertical rotating belt 17 is from the center of the ultra-fine fiber non-woven fabric 1 towards the edge, that is, the rotating directions of the two horizontal rotating belts 20 are opposite, so as to be able to stretch the folds formed by the ultra-fine fiber non-woven fabric 1. In addition, if the ultra-fine fiber non-woven fabric 1 is skewed, the deviation can be adjusted by controlling the rotating speed of the vertical rotating belt 17 of the left fabric stretching guide roller group 13 and the right fabric stretching guide roller group 14. The mutually attached first hollow long grooves 21 and second hollow long grooves 22 form the pore channel.

[0041] As Figures 6 - 7As shown, the first horizontal guide roller group 19 includes a first upper horizontal guide roller 15 and a first lower horizontal guide roller 16. The vertical rotating belt 17 is disposed around the first upper horizontal guide roller 15 and the first lower horizontal guide roller 16. The second vertical guide roller group 18 includes a first front vertical guide roller 33, a second front vertical guide roller 34, a first rear vertical guide roller 35, and a second rear vertical guide roller 36. The horizontal rotating belt 20 is disposed around the outside of the first front vertical guide roller 33, the second front vertical guide roller 34, the first rear vertical guide roller 35, and the second rear vertical guide roller 36. Additionally, the first upper horizontal guide roller 15 and / or the first lower horizontal guide roller 16 provides the driving force for the rotation of the vertical rotating belt 17, and the first front vertical guide roller 33 and / or the second front vertical guide roller 34 and / or the first rear vertical guide roller 35 and / or the second rear vertical guide roller 36 provides the driving force for the rotation of the horizontal rotating belt 20. Preferably, the first rotation axes of the first upper horizontal guide roller 15 and the first lower horizontal guide roller 16 are parallel to each other, the second rotation axes of the first front vertical guide roller 33, the second front vertical guide roller 34, the first rear vertical guide roller 35, and the second rear vertical guide roller 36 are parallel to each other, and the first rotation axis and the second rotation axis are perpendicular to each other.

[0042] As Figures 8 - 10 shown, the vertical rotating belt 17 includes a belt body 23 and a plurality of first hollow long slots 21 provided on the belt body 23. The belt body 23 includes a first vertical front segment 24, a third upper semi-circular segment 26, a second vertical rear segment 25, and a fourth lower semi-circular segment 27 connected in sequence. The belt body 23 forms a closed loop 1 by the first vertical front segment 24, the third upper semi-circular segment 26, the second vertical rear segment 25, and the fourth lower semi-circular segment 27. The horizontal rotating belt 20 includes a belt body 28 and a plurality of second hollow long slots 22 provided on the belt body 28. The belt body 28 includes a first horizontal front segment 29, a third horizontal side segment 31, a second horizontal rear segment 30, and a fourth horizontal side segment 32 connected in sequence. The belt body 28 forms a closed loop 2 by the first horizontal front segment 29, the third horizontal side segment 31, the second horizontal rear segment 30, and the fourth horizontal side segment 32. The fact that the horizontal rotating belt 20 and the vertical rotating belt 17 are cross-engaged means that the closed loop 1 and the closed loop 2 are engaged with each other, just like the engagement of a circular iron chain, which will not be elaborated here. When the horizontal rotating belt 20 and the vertical rotating belt 17 are cross-engaged, the inner side of the first horizontal front segment 29 abuts against the outer side of the first vertical front segment 24, and the outer side of the second horizontal rear segment 30 abuts against the inner side of the second vertical rear segment 25.

[0043] Let the radius of the third upper semi-circular segment be R1, the radius of the fourth lower semi-circular segment be R2, the lengths of the first vertical front segment and the second vertical front segment be H1, the distance from the outside of the first vertical front end segment 24 to the inside of the second vertical rear end segment 25 be W1, the lengths of the first horizontal front segment 29 and the second horizontal rear segment 30 be W2, the length from the inside of the first horizontal front segment 29 to the outside of the second horizontal rear segment 30 be H3, and the height of the belt body two 28 be H2. Then, W1 = H3, H2 < H1, R1 = R2, W2 is greater than or equal to the width of the belt body one 23. Let the length of the first hollow long groove 21 be L1 and the width be L4, the longitudinal spacing between adjacent first hollow long grooves 21 be L2, and the transverse spacing be L3. Let the length of the second hollow long groove 22 be L7 and the width be L5, the longitudinal spacing between adjacent second hollow long grooves 22 be L6, and the transverse spacing be L8. Then, L1 > L4, L7 > L5. Preferably, L1 = L7, L4 = L5, L2 = L8, L3 = L6.

[0044] Further, as Figures 4 - 5As shown in the figure, an intermediate guide roller group 37 is further provided between the left fabric stretching guide roller group 13 and the right fabric stretching guide roller group 14. The intermediate guide roller group 37 includes an upper drive roller group and a lower drive roller group. The upper drive roller group and the lower drive roller group have the same structure, and both include an inner turning roller 38, a first drive rotating shaft 39, a second drive rotating shaft 40, and an outer drive wheel ring 41. One end of the first drive rotating shaft 39 is inserted into the first upper horizontal guide roller 15 of the left fabric stretching guide roller group 13, and the other end is arranged inside the inner turning roller 38. One end of the second drive rotating shaft 40 is inserted into the first upper horizontal guide roller 15 of the right fabric stretching guide roller group 14, and the other end is arranged inside the inner turning roller 38. The outer drive wheel ring 41 is rotatably arranged outside the inner turning roller 38. Specifically, the driving mode of the upper drive roller group and the lower drive roller group can be that the upper drive roller group or the lower drive roller group at the end far from the winding of the ultra-fine fiber non-woven fabric 1 is the power output end, and the lower drive roller group or the upper drive roller group at the other end close to the winding of the ultra-fine fiber non-woven fabric 1 is the driven end. Specifically, it can be such that the inner turning roller 38 at the power output end is fixedly arranged in the surface treatment tank 2, for example, it can be realized by setting structures such as a fixed bracket. A first motor capable of driving the first drive rotating shaft 39 to rotate and a second motor capable of driving the second drive rotating shaft 40 to rotate are respectively arranged inside the inner turning roller 38, and a third motor capable of driving the outer drive wheel ring 41 to rotate is arranged outside the inner turning roller 38. (The first motor, the second motor, and the third motor are all conventional motors in the art, not shown in the figure and will not be elaborated here). In addition, the specific driving mode of the upper drive roller group and the lower drive roller group can be that both the upper drive roller group and the lower drive roller group are used as power output ends, or the upper drive roller group or the lower drive roller group is used as the power output end. The specific driving mode can also be: the first drive rotating shaft 39 and the second drive rotating shaft 40 pass through the side wall of the surface treatment tank 2, and a fourth motor for driving the first drive rotating shaft 39 to rotate and a fifth motor for driving the second drive rotating shaft 40 to rotate are respectively arranged on the side wall. A clutch capable of engaging or disengaging with the first drive rotating shaft 39 and the second drive rotating shaft 40 is arranged inside the inner turning roller 38, and a sixth motor for driving the outer drive wheel ring 41 to rotate is arranged outside the inner turning roller 38.

[0045] Such as Figure 1 , Figure 3 , Figures 11 - 12As shown, the spraying roller group includes a first left spraying roller group 6 and a first right spraying roller group 7 provided at both ends of the first fabric stretching and deviation rectifying guiding roller group 4, and a second left spraying roller group 8 and a second right spraying roller group 9 provided at both ends of the second fabric stretching and deviation rectifying guiding roller group 5. The first left spraying roller group 6, the first right spraying roller group 7, the second left spraying roller group 8, and the second right spraying roller group 9 have the same structure, and each includes an outer jacket 42 and an inner spraying pipe 43 rotatably provided inside. The outer jacket 42 includes an arc-shaped plate 44, a first side plate 45, and a second side plate 46. The first side plate 45 and the second side plate 46 are provided on both sides of the arc-shaped plate 44. An arc-shaped spraying port 47 is formed on the arc-shaped plate 44. The water-based slurry 3 ejected from the inner spraying pipe 43 can be sprayed onto the ultra-fine fiber non-woven fabric 1 through the arc-shaped spraying port 47.

[0046] The inner spraying pipe 43 includes a hollow pipe body 48. A plurality of spraying holes 49 are formed on the hollow pipe body 48. A first liquid inlet end 50 and a second liquid inlet end 51 are respectively provided at both ends of the hollow pipe body 48. Hollow shafts are provided on the outer sides of the first side plate 45 and the second side plate 46. The outer jacket 42 is arranged in the surface treatment tank 2 through the hollow shafts. The first liquid inlet end 50 and the second liquid inlet end 51 are rotatably arranged in the outer jacket 42 through the hollow shafts. Specifically, for example, a driving motor can be provided to drive its rotation. In addition, rotary joints are also provided at the first liquid inlet end 50 and the second liquid inlet end 51. The rotary joints are used to connect the liquid supply pipelines. In this way, while the first liquid inlet end 50 and the second liquid inlet end 51 are rotating, liquid supply can also be carried out. Specifically, the rotary joints are common structures in the art and will not be elaborated here.

[0047] Such as Figure 1 、 Figure 3As shown, in order to adapt to the movement process of the microfiber nonwoven fabric 1 in the surface treatment tank 2, a partition plate 52 is also provided in the surface treatment tank 2, and the partition plate 52 divides the space in the surface treatment tank 2 into a first immersion chamber 53 and a second immersion chamber 54. Aqueous slurry 3 is installed in the first immersion chamber 53 and the second immersion chamber 54, and the height of the aqueous slurry 3 in the first immersion chamber 53 is H4, and the height of the aqueous slurry 3 in the second immersion chamber 54 is H5, then H4>H5, such a setting is adapted to the arrangement of the first fabric stretching and correcting guide roller group 4 and the second fabric stretching and correcting guide roller group 5. In the first immersion chamber 53, the microfiber nonwoven fabric 1 is mainly realized. Pre-impregnate some aqueous slurry 3, and then transfer it to the first fabric stretching and correcting guide roller group 4, cooperate with the actions of the first left spray roller group 6 and the first right spray roller group 7 to achieve better penetration of the aqueous slurry 3 into the microfiber non-woven fabric 1, and at the same time, when being sprayed by the spray roller group, it can provide stable support for the microfiber non-woven fabric 1. After entering the second fabric stretching and correcting guide roller group 5, the microfiber non-woven fabric 1 is wound around the lower end, and the second left spray roller group 8 and the second right spray roller group 9 are arranged on both sides of the second fabric stretching and correcting guide roller group 5. The lower liquid level of the aqueous slurry 3 can facilitate the spraying operation of the second left spray roller group 8 and the second right spray roller group 9 on the microfiber non-woven fabric 1.

[0048] In addition, if Figure 3 As shown, the lower ends of the first fabric stretching and correcting guide roller group 4 and the second fabric stretching and correcting guide roller group 5 are both lower than the liquid level of the aqueous slurry 3, and the height of the spraying roller group is higher than the liquid level of the aqueous slurry 3. This arrangement can ensure that the spraying of the spraying roller group is not affected. In addition, the aqueous slurry 3 can be stored in the first hollow long groove 21 in the vertical rotating belt 17, and the aqueous slurry 3 can be brought into the side in contact with the vertical rotating belt 17, which can achieve a better impregnation effect. In addition, in order to better increase the impregnation effect, the first lower horizontal guide roller 16 on the side in contact with the aqueous slurry 3 can be set as a hollow structure. In this way, the aqueous slurry 3 can quickly enter the first hollow long groove 21 through the hollow structure.

[0049] like Figure 1 , Figure 3As shown in the figure, in order to enable the ultra-fine fiber non-woven fabric 1 to fit well onto the first fabric stretching and deviation-correcting guide roller group 4 and the second fabric stretching and deviation-correcting guide roller group 5, it further includes a first guiding and pressing roller 55, a second guiding and pressing roller 56, a third guiding and pressing roller 57, and a fourth guiding and pressing roller 58. The first guiding and pressing roller 55 is arranged between the impregnation guide roller 12 and the first fabric stretching and deviation-correcting guide roller group 4. The second guiding and pressing roller 56 and the third guiding and pressing roller 57 are successively arranged between the first fabric stretching and deviation-correcting guide roller group 4 and the second fabric stretching and deviation-correcting guide roller group 5. The fourth guiding and pressing roller 58 is arranged between the second fabric stretching and deviation-correcting guide roller group 5 and the extrusion roller group 10.

[0050] As Figure 3 shown in the figure, in order to improve the surface treatment effect of the ultra-fine fiber non-woven fabric 1, at the side of the first fabric stretching and deviation-correcting guide roller group 4 close to the impregnation guide roller 12, the horizontal rotating belt 20 is exposed outside the vertical rotating belt 17. In this way, it can be ensured that the ultra-fine fiber non-woven fabric 1 entering the first fabric stretching and deviation-correcting guide roller group 4 has no wrinkles. In addition, at the side of the second fabric stretching and deviation-correcting guide roller group 5 close to the extrusion roller group 10, the horizontal rotating belt 20 is exposed outside the vertical rotating belt 17, so that the surface of the ultra-fine fiber non-woven fabric 1 leaving can also be ensured to have no wrinkles.

[0051] Preferably, sensors capable of detecting whether the ultra-fine fiber non-woven fabric 1 is skewed can be provided on the first guiding and pressing roller 55 and / or the second guiding and pressing roller 56 and / or the third guiding and pressing roller 57 and / or the fourth guiding and pressing roller 58. For example, position sensors can be provided at the left and right ends of the pressing roller, or image sensors can be provided on the inner wall of the surface treatment tank 2. The skew is judged by collecting images. When it is judged that the ultra-fine fiber non-woven fabric 1 is skewed, the rotation speeds of the vertical rotating belts 17 of the left fabric stretching guide roller group 13 and the right fabric stretching guide roller group 14 are changed, and the skew correction operation of the ultra-fine fiber non-woven fabric 1 is realized by adjusting the relative speed between the two vertical rotating belts 17.

[0052] Preferably, the first front vertical guide roller 33 and / or the second front vertical guide roller 34 and / or the first rear vertical guide roller 35 and / or the second rear vertical guide roller 36 are driven to rotate by a driving motor or a driving motor.

[0053] Preferably, the opening size of the arc-shaped nozzle 47 is α, and the arc-shaped nozzle 47 is opposite to the position of the horizontal rotating belt 20. The slurry sprayed out by the arc-shaped nozzle 47 can cover the range of the height H2 of the horizontal rotating belt 20.

[0054] Preferably, a suction pump is further provided. The suction pump can pump out the aqueous slurry 3 in the surface treatment tank 2 and then enter the inner spray pipe 43 through the first liquid inlet end 50 and / or the second liquid inlet end 51, and then be sprayed out from the spray holes 49.

[0055] Preferably, in order to prevent the exposed horizontal rotating belt 20 from scratching the ultra-fine fiber non-woven fabric 1 when the ultra-fine fiber non-woven fabric 1 is guided into the first fabric stretching and deviation-correcting guide roller group 4, a guiding arc (not shown in the figure) is provided at the bottom of the belt body two 28 of the horizontal rotating belt 20, so as to avoid scratching the non-woven fabric at a right angle. In addition, in order to prevent the exposed horizontal rotating belt 20 from scratching the ultra-fine fiber non-woven fabric 1 when the ultra-fine fiber non-woven fabric 1 is led out from the second fabric stretching and deviation-correcting guide roller group 5, a guiding arc is provided at the top of the belt body two 28 of the horizontal rotating belt 20. In this way, the ultra-fine fiber non-woven fabric can be prevented from being accidentally damaged through the setting of the arc edge.

[0056] Preferably, in order to prevent the horizontal rotating belt 20 from scratching the ultra-fine fiber non-woven fabric 1 when horizontally rotating and stretching the ultra-fine fiber non-woven fabric 1, a plurality of rollers can be provided on the surface of the belt body two 28. The axial directions of the plurality of rollers are parallel to the axial directions of the vertical guide rollers of the second vertical guide roller group 18. The plurality of rollers are arranged on the belt body two 28 between two laterally adjacent first hollow long grooves 21. In addition, the rollers can also be set as balls. The rollers or balls protrude from the belt body two 28 or are flush with the belt body two 28, and the protrusion is, for example, between 0.1 mm and 1 mm.

[0057] Preferably, of course, in order to prevent the relative movement between the vertical rotating belt 17 and the horizontal rotating belt 20 from always causing wear, a plurality of balls can also be provided on the inner side of the horizontal rotating belt 20, so as to relieve the wear between the vertical rotating belt 17 and the horizontal rotating belt 20; or a certain small gap, such as between 0.1 mm and 1 mm, can be provided between the vertical rotating belt 17 and the horizontal rotating belt 20.

[0058] In order to facilitate those skilled in the art to clearly understand the working principle of the water-based non-crease ultra-fine fiber leather processing equipment in Embodiment 1, now in combination with Figures 1 - 3The description is as follows: When the ultra-fine fiber non-woven fabric 1 needs to be impregnated with the aqueous slurry 3, the ultra-fine fiber non-woven fabric 1 passes through the feeding guide roller 11, the impregnation guide roller 12, the first guide pressing roller 55, and the first fabric stretching and deviation correcting guide roller group 4 respectively, and then passes through the second guide pressing roller 56 and the third guide pressing roller 57, so that the ultra-fine fiber non-woven fabric 1 turns over to the other side and winds around the outer end of the second fabric stretching and deviation correcting guide roller group 5, and then passes through the fourth guide pressing roller 58 and then through the extrusion roller group 10 to complete the impregnation treatment. The impregnation guide roller 12 is immersed in the aqueous slurry 3. After the ultra-fine fiber non-woven fabric 1 passes through the impregnation guide roller 12, it is preliminarily impregnated, and then is introduced onto the first fabric stretching and deviation correcting guide roller group 4 by the first guide pressing roller 55. The hollow tube body 48 in the first left spraying roller group 6 is driven to rotate by a motor, and at the same time, the aqueous slurry 3 pumped out by the suction pump enters the hollow tube body 48 from the first liquid inlet end 50 and / or the second liquid inlet end 51, and then is sprayed out from the spray holes 49 and sprayed onto the ultra-fine fiber non-woven fabric 1 through the arc-shaped spray port 47. The left fabric stretching guide roller group 13 and the right fabric stretching guide roller group 14 rotate clockwise synchronously (taking Figure 1 as an example), that is, the vertical rotation belt 17 rotates clockwise, driving the ultra-fine fiber non-woven fabric 1 to slide. In addition, the horizontal rotation belts 20 on the left fabric stretching guide roller group 13 and the right fabric stretching guide roller group 14 rotate in opposite directions, so that the ultra-fine fiber non-woven fabric 1 unfolds from the inside to the outside, which can eliminate wrinkles and also make the ultra-fine fiber non-woven fabric 1 in an open state, enabling the slurry to better penetrate into the interior of the ultra-fine fiber non-woven fabric 1. In addition, the support formed by the moving vertical rotation belt 17 and horizontal rotation belt 20 enables better impregnation. In addition, since the first hollow long groove 21 is provided on the vertical rotation belt 17 and the second hollow long groove 22 is provided on the horizontal rotation belt 20, the cross-set first hollow long groove 21 and second hollow long groove 22 form a hole channel for the aqueous slurry 3 to pass through with continuously changing positions, so as to better realize the impregnation operation of the ultra-fine fiber non-woven fabric 1. In addition, when it is detected that the ultra-fine fiber non-woven fabric 1 is skewed during transmission, the rotation speeds of the vertical rotation belt 17 of the left fabric stretching guide roller group 13 and the vertical rotation belt 17 of the right fabric stretching guide roller group 14 can be adjusted according to the skewing angle, so as to correct the skewing. After the ultra-fine fiber non-woven fabric 1 passes through the guiding of the second guide pressing roller 56 and the third guide pressing roller 57, it turns over one side and winds around the second fabric stretching and deviation correcting guide roller group 5, so that spraying operations can be well performed on both sides of the ultra-fine fiber non-woven fabric 1. The action mechanism of the second fabric stretching and deviation correcting guide roller group 5 is the same as that of the first fabric stretching and deviation correcting guide roller group 4, which will not be elaborated here. Finally, the ultra-fine fiber non-woven fabric 1 is output after being extruded by the extrusion roller group 10. Embodiment

[0059] A method for preparing a water-based crease-free microfiber leather is also provided. The manufacturing process of the water-based crease-free microfiber leather is as follows:

[0060] a. Impregnation:

[0061] Unwind the microfiber non-woven fabric 1 from the unwinding roller, wind it into the above-mentioned water-based crease-free microfiber leather processing equipment. Then, add the water-based slurry 3 into the surface treatment tank 2, start the first fabric stretching and deviation correcting guide roller group 4 and the second fabric stretching and deviation correcting guide roller group 5 to rotate. At the same time, start the spraying roller group to impregnate the microfiber non-woven fabric 1. After impregnation, the microfiber non-woven fabric 1 passes through the squeezing roller group 10 and then enters an oven (not shown in the figure, the oven is a commonly used drying equipment in the art and will not be elaborated here) for drying. The dried microfiber non-woven fabric 1 is wound up by the winding roller to obtain a semi-finished synthetic leather;

[0062] b. Alkali weight reduction treatment:

[0063] Put the semi-finished synthetic leather into a 3% sodium hydroxide aqueous solution for alkali weight reduction treatment to finally obtain the water-based crease-free microfiber leather.

[0064] Preferably, the water-based slurry 3 is composed of a water-based polyurethane resin, an organosilicon leveling agent, an antifoaming agent, calcium stearate, and water. Preferably, the weight parts of the above components are: 100 parts of the water-based polyurethane resin, 1 part of the organosilicon leveling agent, 2 parts of the antifoaming agent, 2 parts of calcium stearate, and 50 parts of water.

[0065] Preferably, after the alkali weight reduction treatment, it also includes a water washing, acid neutralization, and drying treatment process. After the drying treatment, the water-based crease-free microfiber leather is finally obtained. The specific water washing and acid neutralization are both commonly used technical means in the art and will not be elaborated here.

[0066] 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 should not 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. An aqueous crease-free ultra-fine leather processing device, comprising: Surface treatment tank (2), in which an aqueous slurry (3) is contained. It is characterized in that: an immersion guide roller (12), a first fabric stretching and deviation correcting guide roller group (4) and a second fabric stretching and deviation correcting guide roller group (5) are arranged on the surface treatment tank (2). A slurry spraying roller group is arranged at the side ends of the first fabric stretching and deviation correcting guide roller group (4) and the second fabric stretching and deviation correcting guide roller group (5). The ultra-fine fiber non-woven fabric (1) passes downward through the immersion guide roller (12) and then immerses into the aqueous slurry (3), then winds upward around the upper ends of the first fabric stretching and deviation correcting guide roller group (4), and then winds downward around the lower ends of the second fabric stretching and deviation correcting guide roller group (5), and then is led out from the surface treatment tank (2). When the slurry spraying roller group sprays the aqueous slurry (3), the first fabric stretching and deviation correcting guide roller group (4) and the second fabric stretching and deviation correcting guide roller group (5) can support and be arranged inside the ultra-fine fiber non-woven fabric (1), and at the same time provide a hole channel for the penetration of the aqueous slurry (3). The first fabric stretching and deviation correcting guide roller group (4) and the second fabric stretching and deviation correcting guide roller group (5) both include a left fabric stretching guide roller group (13) and a right fabric stretching guide roller group (14) arranged in parallel. The left fabric stretching guide roller group (13) and the right fabric stretching guide roller group (14) both include a vertical rotating belt (17) and a horizontal rotating belt (20). A number of first hollow long grooves (21) are arranged on the vertical rotating belt (17), and a number of second hollow long grooves (22) are arranged on the horizontal rotating belt (20). The vertical rotating belt (17) can rotate vertically, and the horizontal rotating belt (20) can rotate horizontally. The horizontal rotating belt (20) and the vertical rotating belt (17) are arranged in a cross-connecting and buckling manner, and one end of the horizontal rotating belt (20) is attached to the outside of the vertical rotating belt (17), and the other end of the horizontal rotating belt (20) is attached to the inside of the vertical rotating belt (17). The moving direction of the horizontal rotating belt (20) attached to the outside of the vertical rotating belt (17) is from the center of the ultra-fine fiber non-woven fabric (1) towards the edge, so as to stretch the wrinkles formed on the ultra-fine fiber non-woven fabric (1).

2. The water-based crease-free ultra-fine leather processing equipment according to claim 1, characterized in that: An inlet guide roller (11) and a squeezing roller group (10) are also arranged on the surface treatment tank (2). The ultra-fine fiber non-woven fabric (1) is guided by the inlet guide roller (11) and enters the surface treatment tank (2). If the ultra-fine fiber non-woven fabric (1) is deflected, the deviation correction adjustment of the ultra-fine fiber non-woven fabric (1) is realized by controlling the rotation speed of the vertical rotating belts (17) of the left fabric stretching guide roller group (13) and the right fabric stretching guide roller group (14). The mutually attached first hollow long grooves (21) and second hollow long grooves (22) form the hole channel. The vertical rotating belt (17) is guided by a first horizontal guide roller group (19) to realize vertical rotation, and the horizontal rotating belt (20) is guided by a second vertical guide roller group (18) to realize horizontal rotation.

3. The water-based crease-free ultra-fine leather processing equipment according to claim 2, characterized in that: The first horizontal guide roller group (19) includes a first upper horizontal guide roller (15) and a first lower horizontal guide roller (16). The vertical rotating belt (17) is wound around between the first upper horizontal guide roller (15) and the first lower horizontal guide roller (16). The second vertical guide roller group (18) includes a first front vertical guide roller (33), a second front vertical guide roller (34), a first rear vertical guide roller (35), and a second rear vertical guide roller (36). The horizontal rotating belt (20) is wound around the outside of the first front vertical guide roller (33), the second front vertical guide roller (34), the first rear vertical guide roller (35), and the second rear vertical guide roller (36).

4. A water-based crease-free ultra-fine leather processing device according to any one of claims 1-3, characterized in that: The vertical rotating belt (17) includes a belt body one (23) and a plurality of first hollow long grooves (21) provided on the belt body one (23). The belt body one (23) includes a first vertical front section (24), a third upper semi-circular section (26), a second vertical rear section (25), and a fourth lower semi-circular section (27) connected in sequence. The belt body one (23) forms a closed loop one by the first vertical front section (24), the third upper semi-circular section (26), the second vertical rear section (25), and the fourth lower semi-circular section (27). The horizontal rotating belt (20) includes a belt body two (28) and a plurality of second hollow long grooves (22) provided on the belt body two (28). The belt body two (28) includes a first horizontal front section (29), a third horizontal side section (31), a second horizontal rear section (30), and a fourth horizontal side section (32) connected in sequence. The belt body two (28) forms a closed loop two by the first horizontal front section (29), the third horizontal side section (31), the second horizontal rear section (30), and the fourth horizontal side section (32). The fact that the horizontal rotating belt (20) and the vertical rotating belt (17) are cross-engaged means that the closed loop one and the closed loop two are engaged with each other.

5. The water-based crease-free ultra-fine leather processing equipment according to claim 4, characterized in that: When the horizontal rotating belt (20) and the vertical rotating belt (17) are cross-engaged, the inner side of the first horizontal front section (29) is attached to the outer side of the first vertical front section (24), and the outer side of the second horizontal rear section (30) is attached to the inner side of the second vertical rear section (25).

6. The water-based crease-free ultra-fine leather processing equipment according to claim 5, characterized in that: An intermediate guide roller group (37) is also provided between the left fabric stretching guide roller group (13) and the right fabric stretching guide roller group (14). The intermediate guide roller group (37) includes an upper drive roller group and a lower drive roller group. Both the upper drive roller group and the lower drive roller group include an inner steering roller (38), a first drive rotating shaft (39), a second drive rotating shaft (40), and an outer drive wheel ring (41). One end of the first drive rotating shaft (39) is inserted into the first upper horizontal guide roller (15) of the left fabric stretching guide roller group (13), and the other end is arranged in the inner steering roller (38). One end of the second drive rotating shaft (40) is inserted into the first upper horizontal guide roller (15) of the right fabric stretching guide roller group (14), and the other end is arranged in the inner steering roller (38). The outer drive wheel ring (41) is rotatably arranged on the outside of the inner steering roller (38).

7. An aqueous crease-free ultra-fine leather processing device according to claim 6, characterized in that: The driving mode of the upper driving roller group and the lower driving roller group is that the upper driving roller group or the lower driving roller group at the end far away from the winding of the ultra-fine fiber non-woven fabric (1) is the power output end, and the lower driving roller group or the upper driving roller group close to the other end of the winding of the ultra-fine fiber non-woven fabric (1) is the driven end. The inner turning roller (38) at the power output end is fixedly arranged in the surface treatment tank (2). A first motor capable of driving the first driving rotating shaft (39) to rotate and a second motor capable of driving the second driving rotating shaft (40) to rotate are respectively arranged in the inner turning roller (38). A third motor capable of driving the outer driving wheel ring (41) to rotate is arranged outside the inner turning roller (38).

8. The water-based crease-free ultra-fine leather processing equipment according to claim 6, characterized in that: The driving mode of the upper driving roller group and the lower driving roller group is that both the upper driving roller group and the lower driving roller group serve as power output ends, or the upper driving roller group or the lower driving roller group serves as the power output end. The first driving rotating shaft (39) and the second driving rotating shaft (40) pass through the side wall of the surface treatment tank (2). A fourth motor for driving the first driving rotating shaft (39) to rotate and a fifth motor for driving the second driving rotating shaft (40) to rotate are respectively arranged on the side wall. A clutch capable of engaging or disengaging with the first driving rotating shaft (39) and the second driving rotating shaft (40) is arranged in the inner turning roller (38). A sixth motor for driving the outer driving wheel ring (41) to rotate is arranged outside the inner turning roller (38).

9. The water-based crease-free ultra-fine leather processing equipment according to claim 1, characterized in that: The spraying roller group includes a first left spraying roller group (6) and a first right spraying roller group (7) arranged at both ends of the first fabric stretching and deviation correcting guiding roller group (4), and a second left spraying roller group (8) and a second right spraying roller group (9) arranged at both ends of the second fabric stretching and deviation correcting guiding roller group (5). The first left spraying roller group (6), the first right spraying roller group (7), the second left spraying roller group (8) and the second right spraying roller group (9) all include an outer jacket (42) and an inner spray pipe (43) rotatably arranged inside. The outer jacket (42) includes an arc plate (44), a first side plate (45) and a second side plate (46). The first side plate (45) and the second side plate (46) are arranged on both sides of the arc plate (44). An arc-shaped spray opening (47) is formed on the arc plate (44). The aqueous slurry (3) sprayed out from the inner spray pipe (43) can be sprayed onto the ultra-fine fiber non-woven fabric (1) through the arc-shaped spray opening (47).

10. A preparation method of water-based crease-free superfine leather, characterized in that: The preparation method includes the following steps: a. Impregnation: The ultra-fine fiber non-woven fabric (1) is released from the unwinding roller, wound into a water-based non-crease ultra-fine fiber leather processing device according to any one of claims 2-9, and then the aqueous slurry (3) is added into the surface treatment tank (2). The first fabric stretching and deviation correcting guiding roller group (4) and the second fabric stretching and deviation correcting guiding roller group (5) are started to rotate. At the same time, the spraying roller group is started to impregnate the ultra-fine fiber non-woven fabric (1). After impregnation, the ultra-fine fiber non-woven fabric (1) enters the oven for drying after passing through the squeezing roller group (10), and the dried ultra-fine fiber non-woven fabric (1) is wound by the winding roller to obtain a semi-finished synthetic leather. b. Alkaline weight reduction treatment: The semi-finished synthetic leather is put into a 3% sodium hydroxide aqueous solution for alkali weight reduction treatment, and finally the water-based wrinkle-free ultra-fine leather is obtained.

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