Impregnation equipment for synthetic leather production and ultra-thin soft mesh synthetic leather

Abstract

The invention discloses an impregnation device for synthetic leather production and an ultra-thin soft sandwich synthetic leather, belonging to the technical field of cloth surface treatment. Aiming at the problem that the existing impregnation device uses a lot of impregnation liquid and the amount of impregnation liquid used is uncontrollable, an impregnation box group is used to surround the synthetic leather base cloth to be impregnated for impregnation, the impregnation box group includes an inner box group that can be closed and opened, the inner box group includes an upper impregnation box and a lower impregnation box, and an upper impregnation tank group and a lower impregnation tank group are respectively arranged on the side where the upper impregnation box and the lower impregnation box are close to each other, each impregnation tank group consists of a plurality of impregnation tanks, and when the inner box group is in a closed state, the impregnation channel composed of the impregnation tanks is in a broken line shape as a whole, and the impregnation liquid can pass through the base cloth back and forth when impregnating the base cloth, so that the impregnation effect is good, and the amount of impregnation liquid used can also be accurately controlled to avoid the waste of the impregnation liquid.

Description

Technical Field

[0001] The invention relates to the technical field of cloth surface treatment, in particular to an impregnation device for synthetic leather production and an ultra-thin soft sandwich synthetic leather. Background Art

[0002] Non-woven fabric is a kind of non-woven fabric, which directly uses short fibers or filaments to form a net through air flow or machinery, and then goes through processes such as hydroentanglement, needle punching or hot rolling reinforcement to finally form a non-woven fabric. Non-woven fabric is often used as a base fabric, and resin is coated or impregnated on the surface of the fabric to form synthetic leather for shoes. In the prior art, for the surface treatment of fabrics, such as Patent Document 1 (CN115463787A), it discloses a coating device for mesh leather fabrics. When coating the mesh leather fabric, the base fabric is introduced into an impregnation tank containing an impregnation liquid through a guide roller, and then the coating liquid is sprayed on the surface of the base fabric through a fixed roller partially immersed in the coating liquid. By setting a fixed roller with a plurality of slots and a stirring plate rotating inside the fixed roller, the gas and liquid are sprayed onto the base fabric at the same time, thereby improving the impregnation effect. However, the control of the impregnation thickness is It is achieved by a scraper, and the immersion depth of the base fabric is only provided by the impact force of the rotating stirring plate. The immersion effect needs to be further improved. In addition, the immersion is achieved by the entire immersion tank. Although it can immerse the fabric, the amount of immersion liquid used is large. For example, patent document 2 (CN118616272A) discloses a fiber fabric resin treatment device. When the surface of the fabric is treated, an upper push plate and a lower push plate installed on a connecting frame are respectively provided on the upper and lower surfaces of the fabric. The flow rate of the resin solution between the upper push plate and the lower push plate is accelerated by the up and down movement of the connecting frame. However, the movement of the upper push plate and the lower push plate is independent of each other and does not form a linkage operation. The upper push plate and the lower push plate only speed up the flow rate of the resin solution, and do not have much effect on penetrating the surface of the fabric. In addition, the surface treatment of the fabric is achieved by filling the resin solution in the resin solution tank, and the amount of liquid used is also very large. Finally, patent document 3 (CN118080253A) discloses a A glue coating machine head that automatically controls the amount of glue applied includes a glue control roller, a glue coating roller and a transmission roller. When glue coating is required, the release paper passes between the glue coating roller and the transmission roller, and glue liquid is stored between the glue control roller and the glue coating roller. When glue coating is required, the glue liquid in the glue storage tank formed by the glue control roller and the glue coating roller can flow out and then be coated on the release paper. Although the glue coating device can achieve glue coating with a very small amount of glue, it can only coat one side of the fabric, and the depth of the glue liquid entering the fabric cannot be controlled during coating.

[0003] In summary, in the prior art, the surface treatment of synthetic leather is achieved by impregnation with the impregnation liquid in the entire impregnation box, and the surface treatment of fabrics is also achieved by immersing the fabric in the impregnation liquid and then controlling the thickness by a scraper. Although it is considered to spray the slurry onto the fabric surface by spraying, the spraying effect is not good. Even if the slurry is pushed to the fabric surface by a pressing plate, the upper and lower pressing plates act independently, and the flow path of the slurry on the fabric surface is not controllable. Therefore, the present invention provides an impregnation device for synthetic leather production that can allow the slurry to penetrate into the fabric and achieve good impregnation of the fabric surface with very little slurry. Since there is no need to provide an entire impregnation tank, the impregnated fabric can be discharged horizontally without the need to be tilted through a guide roller to ensure that the fabric with a coated surface can be smoother. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide an impregnation device for synthetic leather production, which comprises: a support frame group and an impregnation box group, wherein the impregnation box group is arranged in the support frame group, the impregnation box group comprises an inner box group and an outer box group, the inner box group is arranged in the outer box group, the outer box group is arranged in the support frame group, the inner box group comprises an upper impregnation box and a lower impregnation box, the upper impregnation box comprises a first box body, a liquid storage cavity is arranged in the first box body, an upper impregnation tank group is arranged on a side of the first box body close to the lower impregnation tank, the lower impregnation tank comprises a second box body, a lower impregnation tank group is arranged on a side of the second box body close to the first box body, the upper impregnation tank group and the lower impregnation tank group form an impregnation tank. The impregnation space comprises an upper impregnation tank group which is formed by dividing an upper impregnation tank with a plurality of upper partitions arranged in parallel, and a lower impregnation tank group which is formed by dividing a lower impregnation tank with a plurality of lower partitions arranged in parallel. The upper partitions and the lower partitions are arranged in a staggered manner so that the impregnation space is a zigzag channel, and the synthetic leather base fabric passes through the zigzag channel and separates the upper impregnation tank group and the lower impregnation tank group. The liquid storage chamber stores impregnation liquid, and the liquid storage chamber is connected to the upper impregnation tank group. An impregnation liquid driving assembly is arranged in both the upper impregnation tank group and the lower impregnation tank group. The action of the impregnation liquid driving assembly enables the impregnation liquid to flow along the zigzag channel and through the surface of the synthetic leather base fabric.

[0005] Preferably, the upper impregnation tank group includes an upper impregnation tank at the head end, an upper middle impregnation tank and an upper end impregnation tank arranged in sequence, and the lower impregnation tank group includes a lower impregnation tank at the head end, a lower middle impregnation tank and a lower end impregnation tank arranged in sequence, the upper middle impregnation tanks and the lower middle impregnation tanks are both multiple, the number of the upper middle impregnation tanks is one more than the number of the lower middle impregnation tanks, in the vertical direction, one end of the upper impregnation tank at the head end is flush with one end of the lower impregnation tank at the head end, one end of the upper impregnation tank at the end is flush with one end of the lower impregnation tank at the end, the other end of the upper impregnation tank at the head end is located in the lower impregnation tank at the head end, the end of the first upper middle impregnation tank adjacent to the upper impregnation tank at the head end, close to the upper impregnation tank at the head end, is located in the lower impregnation tank at the head end, and the first upper middle impregnation tank The other end of the tank is located in the first middle lower impregnation tank near the head end lower impregnation tank, the second middle upper impregnation tank near the first middle upper impregnation tank has one end near the head end upper impregnation tank located in the first middle lower impregnation tank, the other end of the second middle upper impregnation tank is located in the second middle lower impregnation tank near the first middle lower impregnation tank, the settings of the other middle upper impregnation tanks are the same as the settings of the first middle upper impregnation tank, until the last middle upper impregnation tank near the terminal upper impregnation tank has one end near the terminal upper impregnation tank located in the terminal lower impregnation tank, and the other end of the terminal upper impregnation tank is located in the terminal lower impregnation tank, and the zigzag channel is formed by the above-mentioned head end upper impregnation tank, head end lower impregnation tank, middle upper impregnation tank, middle lower impregnation tank, terminal lower impregnation tank and terminal upper impregnation tank.

[0006] Preferably, the impregnation liquid driving assembly includes piston 1 located in the upper impregnation tank at the head end, piston 4 located in the lower impregnation tank at the head end, piston 3 located in the middle upper impregnation tank, piston 6 located in the middle lower impregnation tank, piston 2 located in the upper impregnation tank at the end, and piston 5 located in the lower impregnation tank at the end. Piston 1, piston 2, piston 3, piston 4, piston 5 and piston 6 can all drive the impregnation liquid to approach the surface of the synthetic leather base cloth and pass through the synthetic leather base cloth.

[0007] Preferably, the first box body includes an upper top plate, a first side plate, a second side plate, a third side plate, a fourth side plate, a middle partition plate and the upper partition plate, the first side plate, the second side plate, the third side plate and the fourth side plate are respectively arranged on one side of the upper top plate, and the first side plate and the second side plate are opposite, the third side plate and the fourth side plate are opposite, the upper partition plate is arranged between the first side plate and the second side plate, the top end of the first upper partition plate adjacent to the third side plate is connected to the upper top plate, the middle partition plate is arranged on the inner side walls of the fourth side plate, the second side plate, the first upper partition plate and the first side plate, the top ends of all upper partition plates except the first upper partition plate are connected to the middle partition plate, and the liquid storage chamber is formed between the middle partition plate and the upper top plate.

[0008] Preferably, the second box body includes a lower bottom plate, a fifth side plate, a sixth side plate, a seventh side plate, an eighth side plate and the lower partition plate, the fifth side plate, the sixth side plate, the seventh side plate and the eighth side plate are respectively arranged on one side of the lower bottom plate, and the fifth side plate and the sixth side plate are opposite, the seventh side plate and the eighth side plate are opposite, the lower partition plate is arranged between the fifth side plate and the sixth side plate, and the bottom ends of the lower partition plates are connected to the lower bottom plate.

[0009] Preferably, the middle upper impregnation tank is formed by the first side plate, the second side plate, the upper partition plate and the middle partition plate, the head end upper impregnation tank is formed by the first side plate, the third side plate, the second side plate, the first upper partition plate and the upper top plate, the terminal upper impregnation tank is formed by the fourth side plate, the first side plate, the second side plate, the middle partition plate and the last upper partition plate adjacent to the fourth side plate; the middle lower impregnation tank is formed by the fifth side plate, the sixth side plate, the lower partition plate and the lower bottom plate, the first lower partition plate adjacent to the seventh side plate is the first lower partition plate, the last lower partition plate adjacent to the eighth side plate is the terminal lower partition plate, the head end lower impregnation tank is formed by the first lower partition plate, the fifth side plate, the seventh side plate, the sixth side plate and the lower bottom plate, and the terminal lower impregnation tank is formed by the fifth side plate, the eighth side plate, the sixth side plate, the terminal lower partition plate and the lower bottom plate.

[0010] Preferably, the support frame group includes support legs and a support outer frame, the support outer frame is arranged on the support legs, the outer box group includes an upper frame and a lower receiving cover, the upper frame and the lower receiving cover are both vertically slidably arranged in the support outer frame, and a sliding drive component 1 is arranged between the upper frame and the support outer frame, and between the lower receiving cover and the support outer frame; the upper impregnation box is slidably arranged on the inner side of the upper frame, and the lower impregnation box is slidably arranged on the inner side of the lower receiving cover, and a sliding drive component 2 is arranged between the upper impregnation box and the upper frame, and between the lower impregnation box and the lower receiving cover.

[0011] Preferably, a lower receiving block group is provided on the head end lower impregnation tank, the tail end lower impregnation tank and several middle lower impregnation tanks, and the lower receiving block group corresponds to the upper partition; an upper receiving block group is provided on several middle upper impregnation tanks, and the upper receiving block group corresponds to the lower partition; when the upper impregnation box and the lower impregnation box clamp the synthetic leather base cloth, the synthetic leather base cloth can be clamped between the lower receiving block group and the upper partition, and between the upper receiving block group and the lower partition.

[0012] Preferably, the lower supporting block group and the upper supporting block group are both flippable roller groups, and the flippable roller group includes a flip outer frame, a rotating roller group, and a first rotating shaft and a second rotating shaft arranged on both sides of the flip outer frame. The rotating roller group is rotatably arranged in the flip outer frame and protrudes outward from the surface of the flip outer frame, and the first rotating shaft and the second rotating shaft are respectively rotatably arranged between the fifth side plate and the sixth side plate, or the first rotating shaft and the second rotating shaft are respectively rotatably arranged between the first side plate and the second side plate.

[0013] It also includes an ultra-thin soft mesh synthetic leather, the manufacturing process of the synthetic leather is as follows:

[0014] a. Making non-woven fabrics:

[0015] Polyacrylonitrile, thermoplastic polyurethane, a foaming agent and an organic solvent are mixed to obtain a precursor spinning solution, which is then spun to form a non-woven fabric;

[0016] b. Impregnation:

[0017] The prepared nonwoven fabric is rolled up on a winding drum, and then transferred to the impregnation equipment for synthetic leather production for impregnation treatment, and finally an ultra-thin sandwich synthetic leather is formed.

[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 impregnation device of the present invention aims at the problem that the existing impregnation device uses a lot of impregnation liquid and the amount of impregnation liquid used is uncontrollable. The impregnation box group that can surround the synthetic leather base fabric to be impregnated for impregnation is used. The impregnation box group includes an inner box group that can be closed and opened. The inner box group includes an upper impregnation box and a lower impregnation box. The upper impregnation box and the lower impregnation box are respectively provided with an upper impregnation tank group and a lower impregnation tank group on the side close to each other. Each impregnation tank group is composed of a plurality of impregnation tanks. When the inner box group is in a closed state, the impregnation channel composed of the impregnation tanks is in a broken line shape as a whole. When the impregnation liquid is impregnating the base fabric, it can pass through the base fabric back and forth, so that the impregnation effect is good;

[0020] 2. The spinning used in the base fabric of the present invention has been foamed, so that the porosity inside the fiber is relatively high. With the impregnation method of the present invention, the surface and the inside of the base fabric can be well impregnated. Moreover, due to the high porosity of the fibers inside the base fabric, the impregnation liquid is also easier to pass through during the impregnation. In addition, due to the zigzag impregnation channel, the flow mode of the entire impregnation liquid is continuous. When the base fabric is impregnated, it also passes through the base fabric back and forth like a shuttle needle and thread, so that the impregnation liquid impregnated into the surface of the base fabric can also be firmly coated on the surface of the base fabric, which can make the coating effect better than the existing coating;

[0021] 3. The impregnation tanks of the present invention are all provided with pistons, and the liquid storage chamber is connected to the impregnation tank on the head end. When the impregnation liquid is impregnated, the flow order is along the zigzag impregnation channel, so that it first passes through the impregnation tank on the head end, then passes through the base cloth to the lower impregnation tank on the head end, then to the middle upper impregnation tank, the middle lower impregnation tank, and finally reaches the upper impregnation tank on the end. Therefore, the use amount of the impregnation liquid of the base cloth can be well controlled. Moreover, since the impregnation is carried out in the inner box group, the loss of the impregnation liquid is also very small, so that the purpose of using the impregnation liquid accurately and economically can be achieved. At the same time, when the present application is impregnating, the impregnation liquid first passes through the base cloth back and forth continuously, and finally the inner box group is opened, and the closed outer box group is used as an impregnation space to impregnate the entire base cloth, thereby avoiding that the base cloth pressed by the inner box group is not impregnated. The inner box group and the outer box group are used together to achieve a good impregnation effect.

[0022] 4. In order to better improve the impregnation effect and prevent the impregnation liquid from flowing into the adjacent impregnation tank without passing through the base cloth, an upper receiving block group and a lower receiving block group are also provided. The upper receiving block group and the lower receiving block group can cooperate with the lower baffle or the upper baffle respectively, so that the impregnation liquid moves according to the zigzag impregnation channel. In addition, in order to be able to stretch the base cloth to a certain extent during impregnation, the upper receiving block group and the lower receiving block group are made into a reversible roller group. When the impregnation liquid passes through the base cloth, one side of the rotating roller group of the reversible roller group contacts the base cloth, and the base cloth can be stretched by rotating the roller body. At the same time, a thinner sandwich structure can be obtained by cooperating with the external base cloth traction roller or stretching roller. Furthermore, in order to make the internal impregnation liquid in a flowing state during impregnation, the piston head assembly of the piston in the impregnation tank includes a piston rotating block, and the piston rotating block can cooperate with the reversible roller group to move. Finally, the upper plane of the piston rotating block can be continuously slapped or contacted with the base cloth by rotating and flipping the outer frame, so that the impregnation effect is better.

[0023] 5. Finally, the fiber of the present invention uses a foaming agent to make the inside of the fiber porously foamed. The fiber and foaming technology are used to make the floor material light and elastic. At the same time, due to the use of an impregnation device with a zigzag impregnation channel, the base cloth has a good impregnation effect and a strong skin-friendly feel. In addition, the outer box group of the present application is arranged inside the supporting outer frame and can be independently adjusted in position. The inner box group is arranged inside the outer box group and can also be independently adjusted in position. The outer box group not only provides an impregnation space for the inner box group, but the inner box group also includes a lower receiving cover. The lower receiving cover can recover excess or overflowed impregnation liquid, and then provide the recovered impregnation liquid to the liquid supply cavity, thereby avoiding waste and better controlling the amount of impregnation liquid used. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the structure of the impregnation equipment for synthetic leather production of this application;

[0025] Figure 2 It is a schematic diagram of the support frame structure;

[0026] Figure 3 It is a structural schematic diagram of the impregnation box group;

[0027] Figure 4 Exploded view of the dipping tank assembly;

[0028] Figure 5 It is a schematic diagram of the structure of the upper impregnation box;

[0029] Figure 6 It is a schematic diagram of the structure of the lower impregnation box;

[0030] Figure 7 It is a cross-sectional view of the impregnation box assembly;

[0031] Figure 8 It is a schematic diagram of the action flow of the impregnation box group;

[0032] Fig. 9 for Figure 8 A magnified view of D;

[0033] Fig.10 A schematic diagram of forming a coating on the surface of a synthetic leather base fabric;

[0034] Fig.11 It is a structural schematic diagram of the impregnation box group of the second embodiment;

[0035] Fig.12 It is a schematic diagram of the structure of the reversible roller group of the third embodiment;

[0036] Fig.13 Schematic diagram of the piston structure of the fourth embodiment.

[0037] Among them, 1, support frame group; 2, impregnation box group; 3, synthetic leather base fabric; 4, outer box group; 5, inner box group; 6, upper impregnation box; 7, lower impregnation box; 8, first box body; 9, liquid storage chamber; 10, upper impregnation tank group; 11, second box body; 12, lower impregnation tank group; 13, impregnation liquid; 14, upper impregnation tank at the head end; 15, upper impregnation tank at the end; 16, upper impregnation tank in the middle; 17, lower impregnation tank at the head end; 18, lower impregnation tank at the end; 19, middle Lower impregnation tank; 20, piston one; 21, piston two; 22, piston three; 23, piston four; 24, piston five; 25, piston six; 26, upper partition; 27, lower partition; 28, first side plate; 29, second side plate; 30, third side plate; 31, fourth side plate; 32, fifth side plate; 33, sixth side plate; 34, seventh side plate; 35, eighth side plate; 36, liquid supply channel; 37, support frame; 38, support leg; 39, through Hole 1; 40, through hole 2; 41, upper frame; 42, lower receiving cover; 43, lower recovery chamber; 44, lower receiving block group; 45, reversible roller group; 46, reversible outer frame; 47, first rotating shaft; 48, second rotating shaft; 49, rotating roller group; 50, ninth side plate; 51, tenth side plate; 52, eleventh side plate; 53, twelfth side plate; 54, roller rotating shaft; 55, roller body; 56, thirteenth side plate; 57, accommodating chamber; 58, movable Plug rod; 59, piston head assembly; 60, piston fixing seat; 61, piston rotating block; 62, roller group receiving groove; 63, circular arc track; 64, first vertical groove; 65, first transverse groove; 66, circular arc groove; 67, second transverse groove; 68, second vertical groove; 69, upper plane; 70, cylindrical arc surface; 71, upper top plate; 72, lower bottom plate; 73, middle partition plate; 74, upper receiving block group; 75, accommodating groove two; 76, accommodating groove one. DETAILED DESCRIPTION

[0038] The present invention is further described below in conjunction with the examples. However, the present invention is not limited to the following examples. The implementation conditions used in the examples can be further adjusted according to the different requirements of specific use, and the implementation conditions not specified are conventional conditions in the industry. The technical features involved in each embodiment of the present invention can be combined with each other as long as they do not conflict with each other.

[0039] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the embodiments of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0040] The disclosure below provides many different embodiments or examples to implement different structures of the embodiments of the present invention. In order to simplify the disclosure of the embodiments of the present invention, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the embodiments of the present invention. In addition, the embodiments of the present invention can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed.

[0041] The embodiments of the present invention are described in detail below with reference to the accompanying drawings. Example 1

[0042] like Figure 1-Figure 13 As shown, a dipping device for synthetic leather production comprises: a support frame group 1 and a dipping box group 2, wherein the dipping box group 2 is arranged in the support frame group 1, the dipping box group 2 comprises an inner box group 5 and an outer box group 4, the inner box group 5 is arranged in the outer box group 4, the outer box group 4 is slidably arranged in the support frame group 1, the inner box group 5 comprises an upper dipping box 6 and a lower dipping box 7, the upper dipping box 6 comprises a first box body 8, a liquid storage cavity 9 is arranged in the first box body 8, an upper dipping tank group 10 is arranged on a side of the first box body 8 close to the lower dipping tank 7, the lower dipping tank 7 comprises a second box body 11, a lower dipping tank group 12 is arranged on a side of the second box body 11 close to the first box body 8, and the upper dipping tank group 10 and the lower dipping tank group 12 are enclosed to form a dipping tank. The impregnation space is formed by dividing the upper impregnation tank group 10 by a plurality of upper partitions 26 arranged in parallel, and the lower impregnation tank group 12 is formed by dividing the lower partitions 27 arranged in parallel. The upper partitions 26 and the lower partitions 27 are arranged in a staggered manner, so that the impregnation space is a zigzag channel. The synthetic leather base fabric 3 passes through the zigzag channel and separates the upper impregnation tank group 10 and the lower impregnation tank group 12. The liquid storage chamber 9 stores an impregnation liquid 13, and the liquid storage chamber 9 is connected to the upper impregnation tank group 10. The upper impregnation tank group 10 and the lower impregnation tank group 12 are both provided with an impregnation liquid driving assembly. Through the action of the impregnation liquid driving assembly, the impregnation liquid 13 can flow along the zigzag channel through the surface of the synthetic leather base fabric 3, so that its impregnation effect is better.

[0043] like Figure 5-Figure 7As shown, the upper impregnation tank group 10 includes an upper impregnation tank 14 at the head end, an upper middle impregnation tank 16 and an upper end impregnation tank 15 which are arranged in sequence, and the lower impregnation tank group 12 includes a lower impregnation tank 17 at the head end, a lower middle impregnation tank 19 and a lower end impregnation tank 18 which are arranged in sequence. The upper middle impregnation tanks 16 and the lower middle impregnation tanks 19 are both multiple, and the number of the upper middle impregnation tanks 16 is one more than the number of the lower middle impregnation tanks 19. In the vertical direction, one end of the upper impregnation tank 14 at the head end is flush with one end of the lower impregnation tank 17 at the head end, one end of the upper end impregnation tank 15 at the end is flush with one end of the lower end impregnation tank 18 at the end, the other end of the upper end impregnation tank 14 at the head end is located in the lower end impregnation tank 17 at the head end, and the end of the first middle upper impregnation tank 16 adjacent to the upper end impregnation tank 14 at the head end is located in the lower end impregnation tank 17 at the head end. The other end of the upper impregnation tank 16 is located in the first middle lower impregnation tank 19 close to the head end lower impregnation tank 17, the second middle upper impregnation tank 16 close to the first middle upper impregnation tank 16 has one end close to the head end upper impregnation tank 14 located in the first middle lower impregnation tank 19, the other end of the second middle upper impregnation tank 16 is located in the second middle lower impregnation tank 19 close to the first middle lower impregnation tank 19, and the other middle upper impregnation tanks 16 are arranged in sequence until the last middle upper impregnation tank 16 close to the terminal upper impregnation tank 15 has one end close to the terminal upper impregnation tank 15 located in the terminal lower impregnation tank 18, and the other end of the terminal upper impregnation tank 15 is located in the terminal lower impregnation tank 18, and the zigzag channel is formed by the above-mentioned head end upper impregnation tank 14, head end lower impregnation tank 17, middle upper impregnation tank 16, middle lower impregnation tank 19, terminal lower impregnation tank 18 and terminal upper impregnation tank 15.

[0044] The impregnation liquid driving assembly includes a piston 20 located in the impregnation tank 14 on the head end, a piston 4 23 located in the impregnation tank 17 on the head end, a piston 3 22 located in the middle upper impregnation tank 16, a piston 6 25 located in the middle lower impregnation tank 19, a piston 21 located in the upper impregnation tank 15 on the end, and a piston 5 24 located in the lower impregnation tank 18 on the end. The piston 1 20, the piston 2 21, the piston 3 22, the piston 4 23, the piston 5 24 and the piston 6 25 can all drive the impregnation liquid 13 to approach the surface of the synthetic leather base cloth 3 and pass through the synthetic leather base cloth 3. The specific telescopic actions of the piston 1 20, the piston 2 21, the piston 3 22, the piston 4 23, the piston 5 24 and the piston 6 25 can be achieved by a hydraulic telescopic cylinder or an electric telescopic rod. The specific hydraulic telescopic cylinder or electric telescopic rod is common knowledge in the art and will not be described here.

[0045] like Figure 7As shown, a liquid supply channel 36 is also provided in the first box body 8, and the liquid supply channel 36 connects the liquid storage chamber 9 and the impregnation tank 14 on the head end. An electromagnetic on-off valve (not shown in the figure) is also provided in the liquid supply channel 36 for controlling the supply of the impregnation liquid 13. The specific structure of the electromagnetic on-off valve is common knowledge in the art and will not be described here.

[0046] The first box body 8 includes an upper top plate 71, a first side plate 28, a second side plate 29, a third side plate 30, a fourth side plate 31, a middle partition plate 73 and the upper partition plate 26. The first side plate 28, the second side plate 29, the third side plate 30 and the fourth side plate 31 are respectively arranged on one side of the upper top plate 71, and the first side plate 28 and the second side plate 29 are opposite, and the third side plate 30 and the fourth side plate 31 are opposite. The upper partition plate 26 is arranged between the first side plate 28 and the second side plate 29. The top end of the first upper partition plate 26 adjacent to the third side plate 30 is connected to the upper top plate 71. The middle partition plate 73 is arranged on the inner side walls of the fourth side plate 31, the second side plate 29, the first upper partition plate 26 and the first side plate 28. The top ends of all upper partition plates 26 except the first upper partition plate 26 are connected to the middle partition plate 73. The liquid storage chamber 9 is formed between the middle partition plate 73 and the upper top plate 71.

[0047] The second box body 11 includes a lower base plate 72, a fifth side plate 32, a sixth side plate 33, a seventh side plate 34, an eighth side plate 35 and the lower partition plate 27. The fifth side plate 32, the sixth side plate 33, the seventh side plate 34 and the eighth side plate 35 are respectively arranged on one side of the lower base plate 72, and the fifth side plate 32 and the sixth side plate 33 are opposite to each other, and the seventh side plate 34 and the eighth side plate 35 are opposite to each other. The lower partition plate 27 is arranged between the fifth side plate 32 and the sixth side plate 33, and the bottom ends of the lower partition plates 27 are connected to the lower base plate 72.

[0048] The middle upper impregnation tank 16 is formed by the first side plate 28, the second side plate 29, the upper partition plate 26 and the middle partition plate 73; the head end upper impregnation tank 14 is formed by the first side plate 28, the third side plate 30, the second side plate 29, the first upper partition plate 26 and the upper top plate 71; the end upper impregnation tank 15 is formed by the fourth side plate 31, the first side plate 28, the second side plate 29, the middle partition plate 73 and the last upper partition plate 26 adjacent to the fourth side plate 31.

[0049] The middle lower impregnation tank 19 is formed by the fifth side plate 32, the sixth side plate 33, the lower partition 27 and the lower bottom plate 72. The first lower partition adjacent to the seventh side plate 34 is referred to as the first lower partition, and the last lower partition adjacent to the eighth side plate 35 is referred to as the terminal lower partition. The first lower partition, the fifth side plate 32, the seventh side plate 34, the sixth side plate 33 and the lower bottom plate 72 form the head lower impregnation tank 17, and the fifth side plate 32, the eighth side plate 35, the sixth side plate 33, the terminal lower partition and the lower bottom plate 72 form the terminal lower impregnation tank 18.

[0050] like Figure 1-Figure 4 , Figure 7-10 As shown, the support frame group 1 includes support legs 38 and a support outer frame 37, and the support outer frame 37 is arranged on the support legs 38. The outer box group 4 includes an upper frame 41 and a lower receiving cover 42, and the upper frame 41 and the lower receiving cover 42 are both vertically slidably arranged in the support outer frame 37. A sliding drive component 1 (not shown in the figure) is arranged between the upper frame 41 and the support outer frame 37 and between the lower receiving cover 42 and the support outer frame 37. The sliding drive component 1 is such as a rack, a motor gear structure, or a telescopic drive cylinder structure, so that the upper frame 41 and / or the lower receiving cover 42 can be independently raised and lowered relative to the support outer frame 37.

[0051] The upper impregnation box 6 is slidably arranged on the inner side of the upper frame 41, and the lower impregnation box 7 is slidably arranged on the inner side of the lower receiving cover 42. A sliding drive assembly 2 (not shown in the figure) is arranged between the upper impregnation box 6 and the upper frame 41, and between the lower impregnation box 7 and the lower receiving cover 42. The structure of the sliding drive assembly 2 is the same as that of the sliding drive assembly 1, and will not be repeated here.

[0052] In addition, a through hole 1 39 and a through hole 2 40 are respectively opened on both sides of the supporting outer frame 37 , and the synthetic leather base fabric 3 is inserted into the impregnation box group 2 through the through hole 1 39 and the through hole 2 40 .

[0053] In addition, the distances between the plurality of upper partitions 26 are evenly distributed, and the distances between the plurality of lower partitions 27 are evenly distributed.

[0054] like Figure 5-Figure 7As shown, the width of the upper impregnation tank 14 at the head end is D1 and the depth is H1, the width of the upper middle impregnation tank 16 is D2 and the depth is H2, the width of the upper end impregnation tank 15 is D3 and the depth is H3, the width of the lower end impregnation tank 17 is D4 and the depth is H4, the width of the lower middle impregnation tank 19 is D5 and the depth is H5, the width of the lower end impregnation tank 18 is D6 and the depth is H6, H1>H2, H2≥H3, D4>D1, D6>D3. In addition, preferably, D2=D4=D5=D6, D1=D3.

[0055] Preferably, the space where the lower receiving cover 42 is located in the lower impregnation box 7 forms a lower recovery chamber 43. Fig.10 As shown, it is possible to recover overflowed or excess impregnation liquid, and then connect the liquid storage chamber through a recovery pipe (not shown), thereby reducing the usage of the impregnation liquid.

[0056] Preferably, a drying device (not shown in the figure) is further provided on the left or right side of the support frame assembly 1, and the base fabric can enter the drying device for drying after being impregnated.

[0057] Preferably, the impregnation liquid 13 may be a resin, or other reagents capable of dyeing or surface treating the non-woven fabric, such as a dyeing liquid.

[0058] In order to facilitate those skilled in the art to clearly understand the working principle of the synthetic leather production impregnation equipment of Example 1, Figure 8-Figure 10 The description is as follows: when the synthetic leather base fabric 3 is impregnated, the outer box group 4 and the inner box group 5 are in an open state, the synthetic leather base fabric 3 enters the opened impregnation box group 2 through the through hole 1 39 of the supporting outer frame 37, and then passes through the through hole 2 40, and the distance between the upper frame 41 and the lower receiving cover 42 and the distance between the upper impregnation box 6 and the lower impregnation box 7 are adjusted. At the same time, the two ends of the synthetic leather base fabric 3 can be in a stretched state, so that the upper impregnation box 6 and the lower impregnation box 7 squeeze and clamp the synthetic leather base fabric 3. In addition, the upper frame 41 and the lower receiving cover 42 also squeeze and clamp the synthetic leather base fabric 3, so that the impregnation liquid 13 in the liquid storage chamber 9 enters the upper impregnation tank 14 at the head end through the liquid supply channel 36. When the upper impregnation box 6 and the lower impregnation box 7 squeeze and clamp the synthetic leather base fabric 3 and are in a closed state, the piston 1 20 is extended, and the piston 4 23 is in a retracted state. In this way, Figure 8As shown in (a), the impregnation liquid 13 passes through the synthetic leather base fabric 3 and enters the lower impregnation tank 17 at the head end. After the piston 4 23 contracts a certain distance, the piston 4 23 is driven to extend in the opposite direction, and at the same time, the piston 3 22 in the first middle upper impregnation tank 16 adjacent to the upper impregnation tank 14 at the head end is in a retracted state, so that the impregnation liquid 13 can pass through the synthetic leather base fabric 3 from the lower impregnation tank 17 at the head end and enter the first middle upper impregnation tank 16 again, as shown in FIG. Figure 8 As shown in (b) in FIG. 1 , the flow pattern of the impregnation liquid 13 is finally made as follows Figure 8 As shown in (c) in the figure, the synthetic leather base fabric 3 is repeatedly passed through, and finally enters the impregnation tank 15 at the end, so that the impregnation liquid passing through the synthetic leather base fabric 3 is in a continuous state, which can make the impregnation effect better. Finally, as shown in Figure 8 As shown in (d), after the impregnation liquid 13 reaches the upper impregnation tank 15 at the end, the distances of the piston 21, the piston 3 22 and the piston 1 20 to the upper surface of the synthetic leather base fabric 3 are the same, which is L1, and the distances of the piston 5 24, the piston 6 25 and the piston 4 23 to the lower surface of the synthetic leather base fabric 3 are the same, which is L2. Preferably, L1=L2. Finally, as Fig.10 As shown, the upper impregnation box 6 slides upward L1, the lower impregnation box 7 slides downward L2, and at the same time, the piston 21, the piston 3 22 and the piston 1 20 are driven to extend L1, and the piston 5 24, the piston 6 25 and the piston 4 23 are extended L2, and finally the surface of the synthetic leather base fabric 3 is impregnated with the impregnation liquid 13. Then the impregnation box group 2 is opened, and the impregnated synthetic leather base fabric 3 is sent to the left or right (the winding roller, the guide roller, etc. are not specifically shown), and the unimpregnated synthetic leather base fabric 3 is continuously driven into the impregnation box group 2 for impregnation. Specifically, the flow of the impregnation liquid 13 can be such that the piston in the next impregnation tank is moved only after all the impregnation liquid in the previous impregnation tank is pushed out (reserved distance L1 from the upper surface of the synthetic leather base fabric 3 or reserved distance L2 from the lower surface of the synthetic leather base fabric 3), for example, the piston 23 in the lower impregnation tank 17 at the head end is extended in the opposite direction only after the piston 20 is moved away from the upper surface of the synthetic leather base fabric 3 by a distance L1; of course, in order to improve the impregnation efficiency, each piston can be moved at the same time, so that when the piston 20 is moved away from the upper surface of the synthetic leather base fabric 3 by a distance L1, the impregnation box group 2 is in the Figure 8The state shown in (d) in the figure can greatly improve the impregnation efficiency; when the upper impregnation box 6 slides upward by L1 and the lower impregnation box 7 slides downward by L2, the squeezed synthetic leather base fabric 3 is also relaxed, and the impregnation liquid 13 can enter the upper and lower surfaces of the entire base fabric 3, so that the entire synthetic leather base fabric 3 is well impregnated. At this time, a certain amount of impregnation liquid 13 can be added inward through the liquid storage chamber 9, and finally the thickness of the impregnation liquid 13 on the upper surface of the synthetic leather base fabric 3 can be controlled to be L1, and the thickness of the impregnation liquid 13 on the lower surface of the synthetic leather base fabric 3 can be controlled to be L2. Specifically, a liquid supply channel can be set at the lower end of the upper partition 26 to supplement the impregnation liquid 13. Through the setting of the above-mentioned impregnation box group 2, the amount of impregnation liquid 13 on the surface of the synthetic leather base fabric can be accurately controlled, and the impregnation effect of the surface of the synthetic leather base fabric can also be good, so that the amount of surface impregnation liquid of the synthetic leather base fabric after impregnation can also be well controlled. Example 2

[0059] like Figure 6 and 11 As shown, on the basis of Example 1, the difference between Example 2 and Example 1 lies in the different structures of the upper impregnation box 6 and the lower impregnation box 7, specifically: a lower receiving block group 44 is provided on the head end lower impregnation tank 17, the end lower impregnation tank 18 and several middle lower impregnation tanks 19, and the lower receiving block group 44 corresponds to the upper partition 26, and an upper receiving block group 74 is provided on several middle upper impregnation tanks 16, and the upper receiving block group 74 corresponds to the lower partition 27. When the upper impregnation box 6 and the lower impregnation box 7 clamp the synthetic leather base cloth 3, the synthetic leather base cloth 3 can be clamped between the lower receiving block group 44 and the upper partition 26, and between the upper receiving block group 74 and the lower partition 27. In this way, when the impregnation liquid 13 passes through the synthetic leather base cloth 3, it can be prevented from leaking from the side into the adjacent impregnation tank when the impregnation liquid 13 does not pass through the synthetic leather base cloth 3.

[0060] Preferably, an accommodating groove 1 76 is provided on the upper surfaces of piston four 23, piston five 24 and piston six 25, and when piston four 23, piston five 24 and piston six 25 are fully extended, the lower receiving block group 44 is fully accommodated in the accommodating groove 1 76, and an accommodating groove 2 75 is provided on the lower surface of piston three 22, and when piston three 22 is fully extended, the upper receiving block group 74 is fully accommodated in the accommodating groove 2 75.

[0061] Preferably, the lower receiving block set 44 is disposed between the sixth side plate 33 and the fifth side plate 32 , and the upper receiving block set 74 is disposed between the first side plate 28 and the second side plate 29 . Example 3

[0062] like Fig.12As shown, based on Example 2, Example 3 differs from Example 2 in that the structures of the lower receiving block group 44 and the upper receiving block group 74 are different, specifically:

[0063] Use as Fig.12 The reversible roller group 45 shown serves as a lower supporting block group 44 and an upper supporting block group 74, and the reversible roller group 45 includes a reversible outer frame 46, a rotating roller group 49, and a first rotating shaft 47 and a second rotating shaft 48 arranged on both sides of the reversible outer frame 46. The rotating roller group 49 is rotatably arranged in the reversible outer frame 46 and protrudes outward from the surface of the reversible outer frame 46, and the first rotating shaft 47 and the second rotating shaft 48 are respectively rotatably arranged between the fifth side plate 32 and the sixth side plate 36, or the first rotating shaft 47 and the second rotating shaft 48 are respectively rotatably arranged between the first side plate 28 and the second side plate 29. A rotary drive motor is arranged on the first rotating shaft 47 and / or the second rotating shaft 48, so that the flip outer frame 46 can rotate relative to the fifth side plate 32 and the sixth side plate 36, or the flip outer frame 46 can rotate relative to the first side plate 28 and the second side plate 29. Before the lower receiving block group 44 reaches the accommodating groove 1 76, or before the upper receiving block group 74 reaches the accommodating groove 2 75, the flip outer frame 46 is rotated so that the rotating roller group 49 can fit the synthetic leather base cloth 3, so that the synthetic leather base cloth 3 can be clamped with the upper partition plate 26 or the lower partition plate 27, and the rotating roller group 49 can be driven to rotate, so that it can tighten the synthetic leather base cloth 3 and stretch the synthetic leather base cloth 3 in the impregnation box group 2, so as to cooperate with the action of the impregnation liquid 13 passing through the synthetic leather base cloth 3, so as to achieve a better impregnation effect.

[0064] In addition, in order to cooperate with the rotation of the flip roller group 45, the first rotating shaft 47 and the second rotating shaft 48 can be rotatably arranged in a sliding block (not shown in the figure), and the sliding block can slide up and down along the vertical direction of the first side plate 28, the second side plate 29 or the fifth side plate 32 and the sixth side plate 36, and is driven by a telescopic cylinder. In this way, when the flip outer frame 46 is flipped, the sliding block can slide downward or upward, so that there is enough space for flipping.

[0065] The rotating roller group 49 includes a roller shaft 54 ​​and a roller body 55. The flip outer frame 46 is formed by the twelfth side plate 53, the eleventh side plate 52, the thirteenth side plate 56, the ninth side plate 50 and the tenth side plate 51, and a receiving cavity 57 is formed inside. The rotating roller group 49 is arranged in the receiving cavity 57, the second shaft 48 is arranged on the outside of the ninth side plate 50, the first shaft 47 is arranged on the outside of the tenth side plate 51, and the roller shaft 54 ​​is rotatably arranged on the inner side of the ninth side plate 50 and the tenth side plate 51, and the roller shaft 54 ​​can be rotated by a driving motor. The rotation axis of the roller shaft 54 ​​coincides with the rotation axes of the first shaft 47 and the second shaft 48. Example 4

[0066] like Fig.13 As shown, based on Example 3, Example 4 differs from Example 3 in that the piston structure is different, specifically: the structures of piston three 22, piston four 23, piston five 24 and piston six 25 are all as shown in Fig.13 As shown, it includes a piston rod 58 and a piston head assembly 59, wherein the piston head assembly 59 is arranged at the upper end of the piston rod 58, and the piston head assembly 59 includes a piston fixing seat 60 and a piston rotating block 61, wherein the piston rotating block 61 is rotatably arranged in the piston fixing seat 60, and a roller group receiving groove 62 is arranged in the piston rotating block 61, and the reversible roller group 45 can be engaged in the roller group receiving groove 62.

[0067] The piston rotating block 61 includes an upper plane and a cylindrical arc surface 70. An arc track 63 is opened in the piston fixing seat 60. The center of the arc track 63 is O1 and the radius is R. The roller group receiving groove 62 is formed by a first vertical groove 64, a first transverse groove 65, an arc groove 66, a second transverse groove 67 and a second vertical groove 68 connected in sequence. The radius of the arc groove 66 is r and the center is also O1. The rotation center of the first rotating shaft 47 and / or the second rotating shaft 48 of the reversible roller group 45 is O2, so O1 and O2 coincide.

[0068] Through the above arrangement, while the piston ensures sealing, the piston rotating block 61 can also rotate when the first rotating shaft 47 and / or the second rotating shaft 48 rotates, and the surface of the synthetic leather base cloth 3 is slapped by the upper plane, so that its impregnation effect is better. Example 5

[0069] An ultra-thin soft mesh synthetic leather is also provided, and the manufacturing process of the synthetic leather is as follows:

[0070] a. Making non-woven fabrics:

[0071] Polyacrylonitrile, thermoplastic polyurethane, a foaming agent and an organic solvent are mixed to obtain a precursor spinning solution, and then spinning is performed, such as by a wet electrospinning process, to finally form a non-woven fabric;

[0072] b. Impregnation:

[0073] The prepared nonwoven fabric is rolled up on a winding drum, and then transferred to the above-mentioned impregnation equipment for synthetic leather production for impregnation treatment, and finally an ultra-thin sandwich synthetic leather is formed.

[0074] Preferably, the foaming agent may include diphenylmethane diisocyanate, and the organic solvent may include chloroform or ethanol.

[0075] After polyacrylonitrile and thermoplastic polyurethane are dissolved in an organic solvent, a foaming agent is added to allow the fiber to foam porously.

[0076] The impregnation liquid used to impregnate the nonwoven fabric may be, for example, a resin.

[0077] The above detailed description of the present invention is intended to enable persons familiar with the art to understand the contents of the present invention and implement them. It does not limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. An impregnation device for synthetic leather production, comprising: A support frame group (1) and an impregnation box group (2), wherein the impregnation box group (2) is arranged in the support frame group (1), characterized in that: the impregnation box group (2) includes an inner box group (5) and an outer box group (4), the inner box group (5) is arranged in the outer box group (4), the outer box group (4) is arranged in the support frame group (1), the inner box group (5) includes an upper impregnation box (6) and a lower impregnation box (7), the upper impregnation box (6) ) comprises a first box (8), a liquid storage chamber (9) is arranged in the first box (8), an upper impregnation tank group (10) is arranged on a side of the first box (8) close to a lower impregnation tank (7), the lower impregnation tank (7) comprises a second box (11), a lower impregnation tank group (12) is arranged on a side of the second box (11) close to the first box (8), the upper impregnation tank group (10) and the lower impregnation tank group (12) together form a liquid storage chamber (9). The upper impregnation tank group (10) is composed of an upper impregnation tank formed by partitioning a plurality of upper partitions (26) arranged in parallel, and the lower impregnation tank group (12) is composed of a lower impregnation tank formed by partitioning a plurality of lower partitions (27) arranged in parallel. The upper partitions (26) and the lower partitions (27) are arranged in a staggered manner, so that the impregnation space is a zigzag channel. The synthetic leather base fabric (3) passes through the zigzag channel and separates the upper impregnation tank group (10) and the lower impregnation tank group (12). The liquid storage chamber (9) stores an impregnation liquid (13), and the liquid storage chamber (9) is connected to the upper impregnation tank group (10). An impregnation liquid driving component is arranged in both the upper impregnation tank group (10) and the lower impregnation tank group (12). The action of the impregnation liquid driving component enables the impregnation liquid (13) to flow along the zigzag channel and pass through the surface of the synthetic leather base fabric (3). The upper impregnation tank group (10) comprises an upper impregnation tank (14) at the head end, an upper middle impregnation tank (16) and an upper end impregnation tank (15) arranged in sequence, the lower impregnation tank group (12) comprises a lower impregnation tank (17) at the head end, a lower middle impregnation tank (19) and a lower end impregnation tank (18) arranged in sequence, the impregnation liquid driving component comprises a piston 1 (20) located in the upper impregnation tank (14) at the head end, a piston 4 (23) located in the lower impregnation tank (17) at the head end, a piston 5 (24) located in the upper middle impregnation tank (16) and a piston 6 (25) located in the lower end impregnation tank (18) at the head end, and a piston 7 (26) located in the upper middle impregnation tank (16). ), piston three (22) located in the middle lower impregnation tank (19), piston six (25) located in the end upper impregnation tank (15) and piston five (24) located in the end lower impregnation tank (18), wherein the piston one (20), piston two (21), piston three (22), piston four (23), piston five (24) and piston six (25) are all capable of driving the impregnation liquid (13) to approach the surface of the synthetic leather base fabric (3) and pass through the synthetic leather base fabric (3).

2. The impregnation equipment for synthetic leather production according to claim 1, characterized in that: There are a plurality of the middle upper dipping tanks (16) and the middle lower dipping tanks (19), and the number of the middle upper dipping tanks (16) is one more than the number of the middle lower dipping tanks (19). In the vertical direction, one end of the head end upper dipping tank (14) is flush with one end of the head end lower dipping tank (17), one end of the terminal upper dipping tank (15) is flush with one end of the terminal lower dipping tank (18), the other end of the head end upper dipping tank (14) is located in the head end lower dipping tank (17), the end of the first middle upper dipping tank adjacent to the head end upper dipping tank (14) close to the head end upper dipping tank (14) is located in the head end lower dipping tank (17), the other end of the first middle upper dipping tank is located in the first middle lower dipping tank close to the head end lower dipping tank (17), the first middle upper dipping tank is adjacent to the first middle lower dipping tank (15) One end of the second middle upper dipping tank of the upper dipping tank close to the head end upper dipping tank (14) is located in the first middle lower dipping tank, and the other end of the second middle upper dipping tank is located in the second middle lower dipping tank close to the first middle lower dipping tank. The arrangement of the other middle upper dipping tanks is the same as that of the first middle upper dipping tank, until one end of the last middle upper dipping tank close to the terminal upper dipping tank (15) close to the terminal upper dipping tank (15) is located in the terminal lower dipping tank (18), and the other end of the terminal upper dipping tank (15) is located in the terminal lower dipping tank (18). The above-mentioned head end upper dipping tank (14), head end lower dipping tank (17), middle upper dipping tank (16), middle lower dipping tank (19), terminal lower dipping tank (18) and terminal upper dipping tank (15) form the zigzag channel.

3. The impregnation equipment for synthetic leather production according to claim 2, characterized in that: The first box body (8) comprises an upper top plate (71), a first side plate (28), a second side plate (29), a third side plate (30), a fourth side plate (31), a middle partition plate (73) and the upper partition plate (26); the first side plate (28), the second side plate (29), the third side plate (30) and the fourth side plate (31) are respectively arranged on one side of the upper top plate (71); the first side plate (28) and the second side plate (29) are opposite to each other, the third side plate (30) and the fourth side plate (31) are opposite to each other, and the upper partition plate (26) ) is arranged between the first side plate (28) and the second side plate (29), the top end of the first upper partition plate adjacent to the third side plate (30) is connected to the upper top plate (71), the middle partition plate (73) is arranged on the inner side wall of the fourth side plate (31), the second side plate (29), the first upper partition plate and the first side plate (28), the top ends of all upper partition plates (26) except the first upper partition plate are connected to the middle partition plate (73), and the liquid storage chamber (9) is formed between the middle partition plate (73) and the upper top plate (71).

4. The impregnation equipment for synthetic leather production according to claim 3, characterized in that: The second box body (11) includes a lower base plate (72), a fifth side plate (32), a sixth side plate (33), a seventh side plate (34), an eighth side plate (35) and the lower partition plate (27); the fifth side plate (32), the sixth side plate (33), the seventh side plate (34) and the eighth side plate (35) are respectively arranged on one side of the lower base plate (72), and the fifth side plate (32) and the sixth side plate (33) are opposite to each other, and the seventh side plate (34) and the eighth side plate (35) are opposite to each other; the lower partition plate (27) is arranged between the fifth side plate (32) and the sixth side plate (33), and the bottom end of the lower partition plate (27) is connected to the lower base plate (72).

5. The impregnation equipment for synthetic leather production according to claim 4, characterized in that: The first side plate (28), the second side plate (29), the upper partition plate (26) and the middle partition plate (73) form the intermediate upper impregnation tank (16); the first side plate (28), the third side plate (30), the second side plate (29), the first upper partition plate and the upper top plate (71) form the head end upper impregnation tank (14); the fourth side plate (31), the first side plate (28), the second side plate (29), the middle partition plate (73) and the last upper partition plate adjacent to the fourth side plate (31) form the terminal upper impregnation tank (15); the fifth side plate (32), the sixth side plate (33) and the , the middle lower impregnation tank (19) is formed between the lower partition (27) and the lower bottom plate (72), the first lower partition adjacent to the seventh side plate (34) is the first lower partition, and the last lower partition adjacent to the eighth side plate (35) is the terminal lower partition. The first lower partition, the fifth side plate (32), the seventh side plate (34), the sixth side plate (33) and the lower bottom plate (72) form the head lower impregnation tank (17), and the fifth side plate (32), the eighth side plate (35), the sixth side plate (33), the terminal lower partition and the lower bottom plate (72) form the terminal lower impregnation tank (18).

6. The impregnation equipment for synthetic leather production according to claim 5, characterized in that: The support frame group (1) comprises a support leg (38) and a support outer frame (37), wherein the support outer frame (37) is arranged on the support leg (38); the outer box group (4) comprises an upper frame (41) and a lower receiving cover (42), wherein the upper frame (41) and the lower receiving cover (42) are both vertically slidably arranged in the support outer frame (37), and a sliding drive component 1 is arranged between the upper frame (41) and the support outer frame (37), and between the lower receiving cover (42) and the support outer frame (37); the upper impregnation box (6) is slidably arranged on the inner side of the upper frame (41), and the lower impregnation box (7) is slidably arranged on the inner side of the lower receiving cover (42), and a sliding drive component 2 is arranged between the upper impregnation box (6) and the upper frame (41), and between the lower impregnation box (7) and the lower receiving cover (42).

7. An impregnation device for synthetic leather production according to any one of claims 5-6, characterized in that: A lower receiving block group (44) is provided on each of the head end lower impregnation tank (17), the tail end lower impregnation tank (18) and a plurality of middle lower impregnation tanks (19), and the lower receiving block group (44) corresponds to the upper partition (26). An upper receiving block group (74) is provided on each of the middle upper impregnation tanks (16), and the upper receiving block group (74) corresponds to the lower partition (27). When the upper impregnation box (6) and the lower impregnation box (7) clamp the synthetic leather base fabric (3), the lower receiving block group (44) and the upper partition (26), and the upper receiving block group (74) and the lower partition (27) can clamp the synthetic leather base fabric (3).

8. The impregnation equipment for synthetic leather production according to claim 7, characterized in that: The lower receiving block group (44) and the upper receiving block group (74) are both reversible roller groups (45), and the reversible roller group (45) comprises a reversible outer frame (46), a rotating roller group (49), and a first rotating shaft (47) and a second rotating shaft (48) arranged on both sides of the reversible outer frame (46); the rotating roller group (49) is rotatably arranged inside the reversible outer frame (46) and protrudes outward from the surface of the reversible outer frame (46); the first rotating shaft (47) and the second rotating shaft (48) are respectively rotatably arranged between the fifth side plate (32) and the sixth side plate (36), or the first rotating shaft (47) and the second rotating shaft (48) are respectively rotatably arranged between the first side plate (28) and the second side plate (29).

9. An ultra-thin soft mesh synthetic leather, characterized in that: The manufacturing process of the synthetic leather is as follows: a. Making non-woven fabrics: Polyacrylonitrile, thermoplastic polyurethane, a foaming agent and an organic solvent are mixed to obtain a precursor spinning solution, which is then spun to form a non-woven fabric; b. Impregnation: The prepared nonwoven fabric is rolled up on a winding drum, and then transferred to the impregnation equipment for synthetic leather production as described in any one of claims 1 to 8 for impregnation treatment, and finally an ultra-thin soft sandwich synthetic leather is formed.

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