PU upper processing technology and production equipment

Abstract

The PU vamp processing technology and production equipment belong to the PU leather coating technical field, and the PU vamp processing technology adopts the interval distribution of the coating glue blocks between different surface layers, which can save the amount of glue for coating, and the coating roller group in the production equipment includes the inner driving roller group and the outer coating roller group, and the outer coating roller group is tightly attached by a plurality of outer coating plate group units, the side surface of the outer coating plate group unit includes a plurality of interval arranged coating grooves, and by controlling the relative rotation angle between the outer coating plate group units, the coating grooves of each outer coating plate group unit can form the interlaced arrangement, compared with the structure of the plurality of interval arranged annular groove coating rollers, the situation that the fabric is bent due to the existence of the annular groove when the fabric is tightly attached to the coating roller can be reduced.

Description

Technical Field

[0001] This invention relates to the field of PU leather coating technology, specifically to a PU shoe upper treatment process and production equipment. Background Technology

[0002] PU leather boasts rich colors and textures, high consistency, and is lighter than genuine leather, making it particularly suitable for lightweight and comfortable shoes. Therefore, it is widely used in shoe upper manufacturing. Current shoe upper materials generally consist of multiple layers of materials bonded together with a PU layer, such as patent document 1 (CN118219649B). This patent discloses a polyurethane microfoam material for shoe upper manufacturing, comprising a substrate layer, a polyurethane microfoam layer, and a PU layer, with each layer bonded together using polyurethane adhesive. While this polyurethane foam material offers advantages such as light weight and breathability, it does not disclose how the substrate layer, polyurethane microfoam layer, and PU layer are bonded together. The bonding effect between these layers directly affects the molding quality of the finished product. Based on this, another patent document, CN11881... 0194B) discloses a membrane lamination equipment and process. For bonding two layers of fabric, it uses multiple equally spaced annular grooves on the surface of a coating roller. During coating of the two layers, these grooves intersect, causing the adhesive to deform slightly and spread out when the two layers are pressed together, filling the gaps and improving the lamination effect. However, the adhesive is passively applied to the fabric surface, making the amount uncontrollable. This results in some annular grooves having more adhesive than others, ultimately affecting the lamination effect. Furthermore, the continuous nature of the annular grooves leads to excessive adhesive dosage, and the passive coating also results in poor coating quality.

[0003] In summary, existing technologies for PU shoe upper processing, especially for the bonding and coating of multi-layer fabrics, include direct coating with adhesive and coating with staggered ring-shaped coatings. Neither of these methods allows for precise control of the adhesive application amount. Furthermore, the continuous ring-shaped structure of the coatings may result in excessive adhesive in the circumferential direction, leading to overflow in the axial direction and uneven distribution of adhesive among the multi-layer fabrics. Additionally, the adhesive application to the fabric surface is a passive process, without the ability to actively control the injection of adhesive. Therefore, this invention provides a PU shoe upper processing technology and production equipment with discontinuously arranged ring grooves, capable of coating and bonding multi-layer PU shoe upper fabrics, and allowing for controllable adhesive injection. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a PU shoe upper processing technology, including the following steps:

[0005] a. Preparation of PU surface layer:

[0006] 100 parts of polyurethane resin, 80 parts of water solvent or xylene solvent, 10 parts of color paste, 0.2 parts of leveling agent, 0.1 parts of defoamer and 1 part of crosslinking agent are uniformly mixed to obtain a thermoplastic PU coating. The thermoplastic PU coating is uniformly coated on release paper, and the release paper is placed in a multi-stage drying oven for drying to obtain the PU surface layer.

[0007] b. Lamination and finished product production:

[0008] Polyurethane adhesive or solvent-free polyurethane glue is applied to the surface of the PU surface layer and the surface of the substrate layer. The PU surface layer and the substrate layer are pressed together by extrusion roller one and extrusion roller two to form a composite fabric.

[0009] The surface coating of the PU surface layer is completed by coating roller group one, and the surface coating of the substrate layer is completed by coating roller group two. After coating by coating roller group one, several coated adhesive blocks I are formed on the PU surface layer with spacing and cross distribution. After coating by coating roller group two, several coated adhesive blocks II are formed on the substrate layer with spacing and cross distribution. When the PU surface layer and the substrate layer are pressed together, the coated adhesive blocks I and coated adhesive blocks II complement each other, so that the coated adhesive blocks I and coated adhesive blocks II cover the bonding surface of the PU surface layer and the substrate layer.

[0010] Preferably, the arrangement of the first coating block on the PU surface layer is such that it is spaced apart along the longitudinal direction of the PU surface layer and also spaced apart along the transverse direction of the PU surface layer; the arrangement of the second coating block on the substrate layer is such that it is spaced apart along the longitudinal direction of the substrate layer and also spaced apart along the transverse direction of the substrate layer; when the first coating block and the second coating block come into contact, they can form a plurality of coating strips arranged along the longitudinal direction of the composite fabric, and the plurality of coating strips can adhere together after being pressed by the first extrusion roller and the second extrusion roller, so that the first coating block and the second coating block cover the bonding surface of the PU surface layer and the substrate layer.

[0011] Preferably, the first and second coated adhesive blocks are of the same size, with a length of H1 and a width of H2. Along the longitudinal direction of the PU surface layer, the row containing the first coated adhesive block is designated as the first row of coated adhesive blocks. Extending downwards from the top side of the PU surface layer, the rows are sequentially designated as the second row of coated adhesive blocks, ..., the 2M-1 row of coated adhesive blocks, the 2M row of coated adhesive blocks, ..., the Nth row of coated adhesive blocks, where M is a natural number greater than 1 and N is a natural number greater than 4. The 2M-1 row of coated adhesive blocks and the 2M row of coated adhesive blocks are located on the PU surface layer... The projection in the width direction is such that the first and last ends of the first coated block coincide. Along the longitudinal direction of the substrate layer, the row containing the second coated block that is closest to the upper side of the substrate layer is the first coated block row. Extending from the upper side of the PU surface layer to the lower side, the rows are successively the second coated block row, ..., the second coated block row 2M'-1, the second coated block row 2M', ..., the second coated block row N', where M' is a natural number greater than 1 and N' is a natural number greater than 4. The projections of the second coated block row 2M'-1 and the second coated block row in the width direction of the substrate layer are such that the first and last ends of the second coated block coincide.

[0012] Preferably, let W2 be the spacing between adjacent coated blocks in row 2M-1, W1 be the spacing between row 2M-1 and row 2M+1, W4 be the spacing between adjacent coated blocks in row 2M, and W3 be the spacing between row 2M and row 2M+2. Then H1 ≤ W2, W1 > H2, H1 ≤ W4, and W3 > H2. Let W6 be the spacing between adjacent coated blocks in row 2M'-1, W5 be the spacing between row 2M'-1 and row 2M'+1, W8 be the spacing between adjacent coated blocks in row 2M', and W7 be the spacing between row 2M' and row 2M'+2. Then H1 ≤ W6, W5 > H2, H1 ≤ W8, and W7 > H2.

[0013] Preferably, the device further includes a PU shoe upper production apparatus, comprising: a coating roller group one, a coating roller group two, an extrusion roller group one, and an extrusion roller group two. A PU surface layer is wound around the surface of the coating roller group one, and a substrate layer is wound around the surface of the coating roller group two. The PU surface layer and the substrate layer are coated by the coating roller group one and the coating roller group two, respectively, and then pressed together by the extrusion roller group one and the extrusion roller group two to form a composite fabric. The coating roller group one includes a side retaining ring one, an inner drive roller group one, and an outer coating roller group one. The coating roller group two includes a side retaining ring two, an inner drive roller group two, and an outer coating roller group two. The outer coating roller group one is rotatably sleeved... On the outside of the first inner drive roller assembly, the first side retaining ring and the PU surface layer cover the outer end of the first outer coating roller assembly. The second outer coating roller assembly is rotatably sleeved on the outside of the second inner drive roller assembly, and the second side retaining ring and the substrate layer cover the outer end of the second outer coating roller assembly. The first and second inner drive roller assemblies have the same structure, each including a fixed shaft and several inner drive plate assembly units disposed on the fixed shaft. The first and second outer coating roller assemblies have the same structure, each including several outer coating plate assembly units. Adjacent outer coating plate assembly units are in close contact and can move relative to each other. The outer coating plate unit includes a coating main shell, a cover plate, and several extrusion sliders. Several evenly arranged liquid storage tanks are arranged around the outer periphery of the coating main shell, forming coating grooves between adjacent tanks. The extrusion sliders are slidably positioned within the coating grooves. An injection cavity is formed at the outer end of the extrusion slider within the coating groove, filled with polyurethane adhesive or solvent-free polyurethane glue. The coating grooves of adjacent outer coating plate units are staggered. When the PU surface layer drives the outer coating roller assembly to rotate, the inner drive plate unit can drive the extrusion sliders to slide outwards, filling the injection cavity... The polyurethane adhesive or solvent-free polyurethane glue inside is extruded and coated onto the surface of the PU surface layer, forming several spaced and cross-distributed coated adhesive blocks. When the substrate layer drives the outer coating roller group two to rotate, the inner drive plate group unit can drive the extrusion slider to slide outward, extruding and coating the polyurethane adhesive or solvent-free polyurethane glue in the injection chamber onto the surface of the substrate layer, forming several spaced and cross-distributed coated adhesive blocks. When the PU surface layer and the substrate layer are pressed together, the coated adhesive blocks one and coated adhesive blocks two complement each other, so that the coated adhesive blocks one and coated adhesive blocks two cover the bonding surface of the PU surface layer and the substrate layer.

[0014] Preferably, the inner drive plate assembly unit includes a left support plate, a right support plate, and a middle drive plate. The middle drive plate is located between the left support plate and the right support plate. The left support plate and the right support plate are rotatably mounted on the fixed shaft. The middle drive plate is mounted on the fixed shaft via an angle adjustment mechanism.

[0015] Preferably, the two adjacent outer coating plate units are in close contact and can be rotated relative to each other by the angle adjustment mechanism.

[0016] Preferably, the intermediate drive plate includes a rotating ring and a plurality of drive claws, the plurality of drive claws being disposed on the rotating ring, each drive claw including a claw body and a claw end, the claw end being disposed at the end of the claw body away from the rotating ring, and a drive arc surface being disposed on the outer side of the claw end.

[0017] Preferably, the coating body shell includes a side plate with a hexagonal inner hole inside the side plate. There are six liquid storage tanks, with an angle of θ between adjacent liquid storage tanks (θ=60°), an angle of γ between adjacent coating tanks (γ=60°), and an angle of δ between the liquid storage tank and the coating tank (δ=60°). The width of the coating tank is L2. Each liquid storage tank includes an inner arc plate, an outer arc plate, a first side straight plate, and a second side straight plate. The outer arc plate is located at the outer end of the first and second side straight plates, and the inner arc plate is located at the inner end of the first and second side straight plates. The arc length of the outer arc plate is L3, where L3≥L2.

[0018] Preferably, the extrusion slider includes an outer arc top surface, an inner straight bottom surface, a first side surface, and a second side surface. The outer arc top surface is located at the top of the extrusion slider, the inner straight bottom surface is located at the bottom of the extrusion slider, the first side surface is located on the left side of the extrusion slider, and the second side surface is located on the right side of the extrusion slider. When the extrusion slider slides in the coating tank, the first side surface and the second side surface are respectively in close contact with the second side straight plate and the first side straight plate. The curvature of the outer arc top surface is the same as the curvature of the outer arc plate. Both the first side retainer and the second side retainer include an arc-shaped plate body, and a liquid supply device is provided on the outer side of the arc-shaped plate body.

[0019] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0020] 1. In the PU shoe upper processing technology of the present invention, for the coating operation between the PU surface layer and the substrate layer, an innovative coating adhesive block is formed between different surface layers. This saves the amount of adhesive used for coating and also greatly improves the situation of adhesive overflow when the two fabric layers are pressed together. In addition, the adhesive blocks coated in each fabric layer are spaced apart in both the horizontal and vertical directions, which can effectively achieve the adhesion of the fabric layers. In particular, the two coating adhesive blocks formed on their respective fabric layers are complementary in structure and spaced apart. This coating method can better achieve the adhesion of the two fabrics when the two fabric layers are pressed together, resulting in a better composite fabric effect.

[0021] 2. In the coating operation of the present invention, in order to adapt to the formation of spaced coating blocks, the structure of the coating roller is adaptively improved. Specifically, the coating roller group includes an inner drive roller group and an outer coating roller group, and the outer coating roller group is composed of several outer coating plate group units tightly attached together. The side of the outer coating plate group unit includes several spaced coating grooves. By controlling the relative rotation angle between the outer coating plate group units, the coating grooves of each outer coating plate group unit can be arranged in an interlaced manner. In this way, the coating roller can form coating blocks that are spaced apart in both the transverse and longitudinal directions when performing the coating operation. Moreover, compared with the existing structure of several spaced annular groove coating rollers, this coating roller structure can reduce the bending of the fabric due to the presence of the annular grooves when the fabric is in close contact with the coating roller, and can better change the coating operation of the fabric.

[0022] 3. The coating method of the coating roller group of the present invention is as follows: by rotating the outer coating roller group in conjunction with the fixed inner drive roller group, the coating liquid to be coated is placed in the injection cavity. By the sliding of the extrusion slider in the coating tank, the coating liquid is applied to the surface of the surface layer by extrusion action. The bottom of the extrusion slider is set as an inner straight bottom surface, which, in conjunction with the drive arc surface at the end of the middle drive plate, drives the extrusion slider to slide outward when the outer coating roller group rotates relative to the inner drive roller group, and extrudes the coating liquid in the injection cavity to coat the fabric surface. At the same time, a side baffle ring is also provided, and a liquid supply mechanism is provided at the side baffle ring. The liquid supply mechanism can realize the injection of coating liquid in the injection cavity.

[0023] 4. In order to ensure the supply of coating liquid in the injection chamber, the production equipment also includes a storage tank. The storage tank is filled with coating liquid. When the amount of coating liquid in the coating tank is insufficient, such as when the pressure sensor and liquid level sensor jointly determine that the amount of coating liquid in the coating tank is insufficient, the coating liquid in the storage tank can be injected into the coating tank through the liquid supply pump or other means. In addition, considering that the coating liquid in the storage tank mainly plays a replenishing role and its consumption is not large, before each coating operation of the production equipment, the coating tanks of the external coating plate group unit are aligned by driving the external coating plate group unit so that the storage tanks are all in the same position, and then the liquid is replenished through the opened replenishment hole. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the PU shoe upper production equipment of this application;

[0025] Figure 2 This is an exploded view of a coating roller assembly.

[0026] Figure 3 This is a schematic diagram of the explosion of the second coating roller assembly;

[0027] Figure 4Schematic diagram of internal drive roller group one or internal drive roller group two Figure 1 ;

[0028] Figure 5 Schematic diagram of internal drive roller group one or internal drive roller group two Figure 2 ;

[0029] Figure 6 This is a front view of either inner drive roller group one or inner drive roller group two.

[0030] Figure 7 This is the main view of the intermediate drive board;

[0031] Figure 8 (a) is a structural schematic diagram of external coating roller group one or external coating roller group two; (b) is a front view of external coating roller group one or external coating roller group two; (c) is a cross-sectional view AA of (b); (d) is a cross-sectional view BB of (b).

[0032] Figure 9 This is a schematic diagram of the unit structure of the external coating plate assembly;

[0033] Figure 10 Explosion diagram of an externally coated plate assembly unit Figure 1 ;

[0034] Figure 11 Explosion diagram of an externally coated plate assembly unit Figure 2 ;

[0035] Figure 12 For the main body shell front view;

[0036] Figure 13 A cross-sectional view of PU shoe upper production equipment;

[0037] Figure 14 (a) is a schematic diagram of PU surface coating, (b) is a schematic diagram of substrate coating, and (c) is a schematic diagram of coating after the PU surface layer and substrate layer are laminated together.

[0038] The components include: 1. PU surface layer; 2. Substrate layer; 3. Coating roller group one; 4. Coating roller group two; 5. Side retaining ring one; 6. Inner drive roller group one; 7. Outer coating roller group one; 8. Side retaining ring two; 9. Inner drive roller group two; 10. Outer coating roller group two; 11. Fixed shaft; 12. Inner drive plate group unit; 13. Left support plate; 14. Right support plate; 15. Middle drive plate; 16. Outer coating plate group unit; 17. Coating body shell; 18. Cover plate; 19. Coating tank; 20. Extrusion slider; 21. Side plate; 22. Liquid storage tank; 23. Hexagonal inner hole; 24. Hexagonal plate body; 25. Inner circular hole; 26. Rotating ring; 27. Drive claw; 8. First driving claw; 29. ​​Second driving claw; 30. Third driving claw; 31. Inner arc plate; 32. Outer arc plate; 33. Side straight plate one; 34. Side straight plate two; 35. Outer arc top surface; 36. Driving arc surface; 37. Claw body; 38. Claw end; 39. First side surface; 40. Second side surface; 41. Arc plate body; 42. First guide edge; 43. Second guide edge; 44. Injection chamber; 45. Inlet roller one; 46. Inlet roller two; 47. Extrusion roller one; 48. Extrusion roller two; 49. Coating block one; 50. Coating block two; 51. First inner driving plate assembly unit; 52. Second inner driving plate assembly unit; 53. Inner straight bottom surface. Detailed Implementation

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

[0040] Example 1

[0041] A PU shoe upper processing technology includes the following steps:

[0042] a. Preparation of PU surface layer 1:

[0043] 100-120 parts of polyurethane resin, 80-100 parts of water solvent or xylene (DMF) solvent, 10-20 parts of color paste (which can be prepared by dispersing pigment powder in resin and solvent), 0.2-0.5 parts of leveling agent, 0.1-0.3 parts of defoamer, and 1-3 parts of crosslinking agent are uniformly mixed to obtain a thermoplastic PU coating. The PU coating is uniformly coated on release paper, and the release paper is placed in a multi-stage oven for drying to obtain the PU surface layer 1.

[0044] b. Lamination and finished product production:

[0045] Polyurethane adhesive or solvent-free polyurethane glue is applied to the surface of PU surface layer 1 and substrate layer 2. After PU surface layer 1 and substrate layer 2 are pressed together by extrusion roller 1 47 and extrusion roller 2 48, they form a composite fabric. After heat treatment, the fabric is cured and then cut and rolled up to obtain the finished product.

[0046] Preferably, the surface coating of the PU surface layer 1 is completed by coating roller group 3, and the surface coating of the substrate layer 2 is completed by coating roller group 4. After coating by coating roller group 3, a number of spaced and cross-distributed coating blocks 49 are formed on the PU surface layer 1. After coating by coating roller group 4, a number of spaced and cross-distributed coating blocks 50 are formed on the substrate layer 2. When the PU surface layer 1 and the substrate layer 2 are pressed together, the coating blocks 49 and the coating blocks 50 complement each other, so that the coating blocks 49 and the coating blocks 50 cover the bonding surface of the PU surface layer 1 and the substrate layer 2.

[0047] Preferably, the substrate layer 2 can be made of nylon, microfiber cloth, etc.

[0048] Preferably, such as Figure 14 As shown, the arrangement of the first adhesive block 49 on the PU surface layer 1 is as follows: it is spaced apart along the longitudinal direction of the PU surface layer 1 and also spaced apart along the transverse direction of the PU surface layer 1. The arrangement of the second adhesive block 50 on the substrate layer 2 is as follows: it is spaced apart along the longitudinal direction of the substrate layer 2 and also spaced apart along the transverse direction of the substrate layer 2. When the first adhesive block 49 and the second adhesive block 50 come into contact, they can form several coating strips arranged along the longitudinal direction of the composite fabric formed by the bonded PU surface layer 1 and substrate layer 2. Figure 14 As shown in (c), the plurality of coating strips can adhere together after being pressed by the extrusion roller 47 and the extrusion roller 48, thereby making the coating block 49 and the coating block 50 cover the bonding surface of the PU surface layer 1 and the substrate layer 2.

[0049] Preferably, the first adhesive block 49 and the second adhesive block 50 are the same size, such as... Figure 14As shown, let the length of coating block 49 and coating block 50 both be H1 and the width both be H2. Along the longitudinal direction of PU surface layer 1, let the row containing coating block 49, which is closest to the upper side of PU surface layer 1, be the first row of coating blocks. Extending from the upper side to the lower side of PU surface layer 1, the rows are successively the second row of coating blocks, ..., the 2M-1 row of coating blocks, the 2M row of coating blocks, ..., the Nth row of coating blocks, where M is a natural number greater than 1 and N is a natural number greater than 4. The projections of the 2M-1 row of coating blocks and the 2M row of coating blocks onto the width direction of PU surface layer 1 are... The first and last ends of the first coated adhesive block 49 coincide. Along the longitudinal direction of the substrate layer 2, the row containing the second coated adhesive block 50 closest to the upper side of the substrate layer 2 is designated as the first coated adhesive block row. Extending from the upper side to the lower side of the PU surface layer 1, the rows are sequentially designated as the second coated adhesive block row, ..., the second coated adhesive block row 2M'-1, the second coated adhesive block row 2M', ..., the second coated adhesive block row N', where M' is a natural number greater than 1 and N' is a natural number greater than 4. The projections of the second coated adhesive block row 2M'-1 and the second coated adhesive block row onto the width direction of the substrate layer 2 are such that the first and last ends of the second coated adhesive block 50 coincide. Figure 14 As shown in (c) in the figure.

[0050] Preferably, let W2 be the spacing between adjacent coated blocks 49 in the 2M-1st coated block row, W1 be the spacing between the 2M-1st coated block row and the 2M+1st coated block row, W4 be the spacing between adjacent coated blocks 49 in the 2Mth coated block row, and W3 be the spacing between the 2Mth coated block row and the 2M+2th coated block row. Then, H1≤W2, W1>H2, H1≤W4, and W3>H2. Let W6 be the spacing between adjacent coated blocks 50 in the second row of coated blocks 2M'-1, W5 be the spacing between the second row of coated blocks 2M'-1 and the second row of coated blocks 2M'+1, W8 be the spacing between adjacent coated blocks 50 in the second row of coated blocks 2M', and W7 be the spacing between the second row of coated blocks 2M' and the second row of coated blocks 2M'+2. Then H1≤W6, W5>H2, H1≤W8, W7>H2.

[0051] Preferably, W2=W6, W4=W8, W1=W5, and W3=W7.

[0052] Example 2

[0053] like Figures 1-13As shown, it also includes a PU shoe upper production device, which includes: a coating roller group 3, a coating roller group 4, an extrusion roller 47, and an extrusion roller 48. A PU surface layer 1 is wound around the surface of the coating roller group 3, and a substrate layer 2 is wound around the surface of the coating roller group 4. The PU surface layer 1 and the substrate layer 2 are coated by the coating roller group 3 and the coating roller group 4, respectively, and then pressed by the extrusion roller 47 and the extrusion roller 48 to form a composite fabric. The coating roller group 3 includes a side retaining ring 5, an inner drive roller group 6, and an outer coating roller group 7. The coating roller group 4 includes a side retaining ring 8, an inner drive roller group 9, and an outer coating roller group 10. The outer coating roller group 7 is rotatably sleeved on the outside of the inner drive roller group 6. The side retaining ring 5 and the PU surface layer 1 cover the outer end of the outer coating roller group 7. The outer coating roller group 10 is rotatably sleeved on the outside of the inner drive roller group 9. The side retaining ring 8 and the substrate layer 2 cover the outer end of the inner drive roller group 6. The outer end of the second outer coating roller group 10, the inner drive roller group 6 and the second inner drive roller group 9 have the same structure, both including a fixed shaft 11 and several inner drive plate group units 12 disposed on the fixed shaft 11. The outer coating roller group 7 and the second outer coating roller group 10 have the same structure, both including several outer coating plate group units 16. Two adjacent outer coating plate group units 16 are closely attached and can rotate relative to each other for adjustment. The outer coating plate group unit 16 includes a coating body shell 17, a cover plate 18 and several extrusion sliders 20. Several evenly arranged liquid storage tanks 22 are provided on the outer periphery of the coating body shell 17. A coating groove 19 is formed between adjacent liquid storage tanks 22. The extrusion sliders 20 are slidably disposed in the coating groove 19. A liquid injection cavity 44 is formed at the outer end of the extrusion slider 20 in the coating groove 19. The liquid injection cavity 44 is filled with polyurethane adhesive or solvent-free polyurethane glue. The coating grooves 19 of adjacent outer coating plate group units 16 are staggered, such as Figure 8 As shown in (a), when the PU surface layer 1 drives the outer coating roller group 7 to rotate, the inner drive plate group unit 12 can drive the extrusion slider 20 to slide outward, extruding and coating the polyurethane adhesive or solvent-free polyurethane glue in the injection cavity 44 onto the surface of the PU surface layer 1, forming a number of intermittently distributed coating blocks 49. When the substrate layer 2 drives the outer coating roller group 10 to rotate, the inner drive plate group unit 12 can drive the extrusion slider 20 to slide outward, extruding and coating the polyurethane adhesive or solvent-free polyurethane glue in the injection cavity 44 onto the surface of the substrate layer 2, forming a number of intermittently distributed coating blocks 50. When the PU surface layer 1 and the substrate layer 2 are pressed together, the coating blocks 49 and 50 complement each other, so that the coating blocks 49 and 50 cover the bonding surface of the PU surface layer 1 and the substrate layer 2.

[0054] Preferably, such as Figures 4-7As shown, the inner drive plate assembly unit 12 includes a left support plate 13, a right support plate 14, and a middle drive plate 15. The middle drive plate 15 is located between the left support plate 13 and the right support plate 14. The left support plate 13 and the right support plate 14 are rotatably mounted on the fixed shaft 11. The middle drive plate 15 is mounted on the fixed shaft 11 via an angle adjustment mechanism (not shown in the figure). Specifically, the angle adjustment mechanism can be configured such that a gear ring is set on the inner ring of the middle drive plate 15, and a rotary drive motor is set inside the fixed shaft 11. A drive pinion is set at the end of the rotary drive motor. The rotation of the rotary drive motor drives the drive pinion to rotate, thereby driving the gear ring to rotate relative to the fixed shaft 11, thereby adjusting the position angle of the middle drive plate 15 relative to the fixed shaft 11. Alternatively, a drive motor can be set on the middle drive plate 15, and a gear ring can be set on the outer ring of the fixed shaft 11.

[0055] Preferably, the two adjacent outer coating plate units 16 are closely attached to each other and can be rotated relative to each other. Specifically, this can be achieved by setting an angle adjustment mechanism two (not shown in the figure) on the side of the outer coating plate unit 16. The angle adjustment mechanism two can be a raised ring on the outer side of the coating body shell 17 and a recessed groove on the outer side of the cover plate 18. The raised ring can be inserted into the recessed groove, and a gear ring two is opened in the recessed groove. A traveling gear is set on the raised ring. The traveling gear is driven to rotate by a rotation drive motor two. The traveling gear meshes with the gear ring two, thereby realizing the relative rotation adjustment between the two adjacent outer coating plate units 16. In turn, the final coated adhesive block one 49 and coated adhesive block two 50 can be adjusted in the arrangement position of the PU surface layer 1 and the substrate layer 2.

[0056] like Figure 7 As shown, the intermediate drive plate 15 includes a rotating ring 26 and a plurality of drive claws 27. The plurality of drive claws 27 are disposed on the rotating ring 26. Each drive claw 27 includes a claw body 37 and a claw end 38. The claw end 38 is disposed at the end of the claw body 37 away from the rotating ring 26. A drive arc surface 36 is provided on the outer side of the claw end 38.

[0057] Preferably, there are at most five drive claws 27.

[0058] Preferably, such as Figure 12As shown, the coating body shell 17 includes a side plate 21, with a hexagonal inner hole 23 inside the side plate 21. There are six liquid storage tanks 22, with an included angle of θ between adjacent liquid storage tanks 22 (θ=60°), an included angle of γ between adjacent coating tanks 19 (γ=60°), and an included angle of δ between the liquid storage tanks 22 and the coating tanks 19 (δ=60°). The width of the coating tank 19 is L2. The liquid storage tank 22 includes an inner arc plate 31, an outer arc plate 32, a first side straight plate 33, and a second side straight plate 34. The outer arc plate 32 is located at the outer end of the first side straight plate 33 and the second side straight plate 34, and the inner arc plate 31 is located at the inner end of the first side straight plate 33 and the second side straight plate 34. The arc length of the outer arc plate 32 is L3, so L3≥L2.

[0059] Preferably, the first side straight plate 33 is parallel to the axis of the coating tank 19 it is located in, and the second side straight plate 34 is parallel to the axis of the coating tank 19 it is located in.

[0060] Preferably, let R2 be the radius of the outer arc plate 32 and R3 be the radius of the inner arc plate 31, then R2 > R3; let R1 be the radius of the driving arc surface 36, then R1 ≤ R3; and let L1 be the arc length of the driving arc surface 36, then L1 <L2。

[0061] Preferably, the side length of the hexagonal inner hole 23 is opposite to the coating groove 19, and the included angle of the hexagonal inner hole 23 is opposite to the liquid storage tank 22.

[0062] like Figure 7 As shown, there are three driving claws 27, namely the first driving claw 28, the second driving claw 29 and the third driving claw 30. The first driving claw 28, the second driving claw 29 and the third driving claw 30 are arranged sequentially along the rotating ring 26. The included angle between the first driving claw 28 and the second driving claw 29 is α, and the included angle between the second driving claw 29 and the third driving claw 30 is β, where α=β=30°.

[0063] Preferably, the distance between adjacent side straight plates 33 and 34 is equal to the side length of the hexagonal inner hole 23.

[0064] Preferably, such as Figures 10-11 As shown, the extrusion slider 20 includes an outer arc top surface 35, an inner straight bottom surface 53, a first side surface 39, and a second side surface 40. The outer arc top surface 35 is located at the top of the extrusion slider 20, the inner straight bottom surface 53 is located at the bottom of the extrusion slider 20, the first side surface 39 is located on the left side of the extrusion slider 20, and the second side surface 40 is located on the right side of the extrusion slider 20. When the extrusion slider 20 slides in the coating groove 19, the first side surface 39 and the second side surface 40 are respectively in close contact with the second side straight plate 34 and the first side straight plate 33. The curvature of the outer arc top surface 35 is the same as the curvature of the outer arc plate 32.

[0065] Preferably, to prevent the extrusion slider 20 from sliding out of the coating tank 19, anti-detachment plates are respectively provided at both ends of the first side plate 33 and / or the second side plate 34. The anti-detachment plates can restrict the extrusion slider 20 from detaching. In addition, to ensure that the extrusion slider 20 can slide smoothly in the coating tank 19, guide grooves or guide sliders can be provided on the first side plate 33 and / or the second side plate 34 and / or the side plate 21, thereby ensuring the smooth sliding of the extrusion slider 20.

[0066] Preferably, the left support plate 13 and the right support plate 14 have the same structure, both including a hexagonal plate body 24 with an inner circular hole 25 inside. The cover plate 18 also has a hexagonal inner hole on its inner side. The hexagonal plate body 24 is fitted into the inner side of the hexagonal inner hole, and the fixed shaft 11 passes through the inner circular hole 25. Furthermore, to ensure smooth rotation, a bearing can be installed inside the inner circular hole 25, and the hexagonal plate body 24 is rotatably mounted on the fixed shaft 11 via the bearing.

[0067] Preferably, such as Figure 4 , Figure 6 As shown, several internal drive plate units 12 located on the fixed shaft 11 are sequentially defined as the first internal drive plate unit 51, the second internal drive plate unit 52, ..., the 2Q-1th internal drive plate unit, the 2Qth internal drive plate unit, ..., the Pth internal drive plate unit, where Q is a natural number greater than 1 and P is a natural number greater than 4. The axes of the first drive claws 28 of the first internal drive plate units 51, ..., the 2Q-1th internal drive plate units are parallel, the axes of the first drive claws 28 of the second internal drive plate units 52, ..., the 2Qth internal drive plate units are parallel, and the angle between the axis of the first drive claw 28 of the 2Q-1th internal drive plate unit and the axis of the first drive claw 28 of the 2Qth internal drive plate unit is η. Preferably, η = 30°.

[0068] Preferably, the side retaining ring 5 and the side retaining ring 8 have the same structure, both including an arc-shaped plate body 41. A first guide edge 42 is provided at the upper end of the arc-shaped plate body 41, and a second guide edge 43 is provided at the lower end of the arc-shaped plate body 41. The central angle of the arc-shaped plate body 41 is ε, the wrap angle of the PU surface layer 1 on the outer coating roller group 7 is ζ1, and the wrap angle of the substrate layer 2 on the outer coating roller group 10 is ζ2. Then ε+ζ1≥360°, ε+ζ2≥360°.

[0069] Preferably, a liquid supply device (not shown in the figure) is provided on the outer side of the arc-shaped plate body 41. The liquid supply device is used to provide polyurethane adhesive or solvent-free polyurethane glue to the injection chamber 44. The liquid supply device may specifically include a liquid supply pump and several liquid supply pipes. Several liquid supply holes are opened on the outer side of the arc-shaped plate body 41 at the position corresponding to the coating groove 19. The end of the liquid supply pipe is connected to the liquid supply hole. After the polyurethane adhesive or solvent-free polyurethane glue in the injection chamber 44 is injected into the PU surface layer 1 and the substrate layer 2 by the driving claw 27, the injection chamber 44 continues to rotate. After rotating to the liquid supply hole, the liquid supply pump injects the polyurethane adhesive or solvent-free polyurethane glue into the injection chamber 44 again to complete the liquid supply operation.

[0070] Preferably, in order to make the liquid supply more sufficient, the liquid supply holes can be provided in several rows, that is, several liquid supply holes can be provided along the direction from the first guide edge 42 to the second guide edge 43, so that the liquid injection chamber 44 can be injected through multiple liquid supply holes.

[0071] Preferably, to ensure sufficient polyurethane adhesive or solvent-free polyurethane glue in the injection chamber 44, the reservoir 22 is filled with polyurethane adhesive or solvent-free polyurethane glue. Liquid replenishment holes are provided on the first side plate 33 and the second side plate 34. An electromagnetic on / off valve is installed in each liquid replenishment hole. When insufficient liquid is detected in the injection chamber 44, the electromagnetic on / off valve opens, and polyurethane adhesive or solvent-free polyurethane glue is supplied to the injection chamber 44 from the reservoir 22. Since the reservoir 22 is mainly used for replenishing liquid, its consumption during fabric coating is relatively small, and replenishment can be performed after each fabric coating is completed.

[0072] Preferably, to ensure rapid replenishment of the liquid storage tank 22, a first replenishment hole and a second replenishment hole are respectively provided on the cover plate 18 and the side plate 21 at positions corresponding to the liquid storage tank 22. Both the first and second replenishment holes are equipped with electromagnetic on / off valves. When replenishment is required, the angle adjustment mechanism 2 is activated, causing the coating tanks 19 of adjacent outer coating plate units 16 to overlap, thus aligning the first and second replenishment holes of adjacent outer coating plate units 16. Then, the electromagnetic on / off valves are opened, and a replenishment pipe is introduced through the first replenishment hole of the outermost outer coating plate unit 16 to replenish the liquid storage tank 22. After replenishment, the electromagnetic on / off valves are closed, and the angle adjustment mechanism 2 is driven to reverse its direction to complete the replenishment operation.

[0073] Preferably, the system further includes a first guide roller 45 and a second guide roller 46. The first guide roller 45 is disposed below the first coating roller group 3, and the second guide roller 46 is disposed below the second coating roller group 4. The first guide roller 45 is used to guide the PU surface layer 1, and the second guide roller 46 is used to guide the substrate layer 2. After passing through the first guide roller 45, the PU surface layer 1 is wrapped around the surface of the first coating roller group 3, and the substrate layer 2 is wrapped around the surface of the second coating roller group 4 after passing through the second guide roller 46.

[0074] To facilitate a clear understanding of the working principle of the PU shoe upper production equipment in Embodiment 2 by those skilled in the art, the production equipment is described as follows: Before pressing the PU surface layer 1 and the substrate layer 2 together, pre-coating adjustments are made to the coating roller group 1 3 and coating roller group 2 4: First, both angle adjustment mechanisms 1 and 2 are activated, ensuring that the axes of the first driving claws 28 of the first inner drive plate group unit 51, the second inner drive plate group unit 52, ..., the 2Q-1 inner drive plate group unit, the 2Q inner drive plate group unit, ..., the P inner drive plate group unit are parallel, and the outer coating plate group unit 16... All coating tanks 19 are aligned. To control the position of the outer coating plate assembly unit 16 relative to the fixed shaft 11, a drive motor three is installed at the inner end of the left support plate 13 or right support plate 14 of the first inner drive plate assembly unit 51. This drive motor three is in a driving state during debugging, but after debugging, it does not provide power, allowing the left support plate 13 or right support plate 14 to rotate freely. Alternatively, an angle adjustment mechanism three is installed at the fixed shaft 11 on one side of the first inner drive plate assembly unit 51, capable of adjusting the angle of the outermost outer coating plate assembly unit 16 relative to the fixed shaft 11. The third adjustment mechanism can be a mechanical gripper driven by a rotary motor, rotating relative to the fixed shaft 11. When the angle of the outermost outer coating plate unit 16 relative to the fixed shaft 11 needs adjustment, the mechanical gripper can contact and press the outermost outer coating plate unit 16. The angle of the outermost outer coating plate unit 16 relative to the fixed shaft 11 is adjusted by the rotation of the rotary motor. Further details are omitted here. Then, the electromagnetic on / off valves controlling the liquid replenishment holes one and two are opened, and a liquid replenishment tube is introduced into the liquid replenishment hole one of the outermost outer coating plate unit 16, thereby enabling the adjustment of the outermost outer coating plate unit 16. The liquid storage tank 22 is replenished. After replenishment, the angle adjustment mechanisms one and two reverse their movements, making the axes of the first driving claws 28 of the first inner drive plate group units 51, ..., and the 2Q-1 inner drive plate group units parallel, and the axes of the first driving claws 28 of the second inner drive plate group units 52, ..., and the 2Q inner drive plate group units parallel. The angle between the axis of the first driving claw 28 of the 2Q-1 inner drive plate group unit and the axis of the first driving claw 28 of the 2Q inner drive plate group unit is 30°. Then, the coating tanks 19 of the adjacent outer coating plate group units 16 are driven to intersect each other, and as... Figure 13As shown, the axis m of the first driving claw 28 of the first inner driving plate unit 51 of the inner driving roller group 16 is 30° with the axis k of the third driving claw 30 of the first inner driving plate unit 51 of the inner driving roller group 29, and the liquid storage tank 22 and the driving claw 27 are positioned opposite each other, so that the driving claw 27 is located inside the liquid storage tank 22, completing the debugging work; then, the PU surface layer 1 is wound around the surface of the coating roller group 1 3 after passing through the first guide roller 45, and the substrate layer 2 is wound around the surface of the coating roller group 2 4 after passing through the second guide roller 2 46, so that the PU surface layer 1 and the substrate layer 2 are bonded together. After being extruded by extrusion rollers 47 and 48, a composite fabric is formed. It then undergoes heat treatment to cure. After cutting and winding, the finished product is obtained. The composite fabric is wound up by a winding roller (not shown in the diagram). Before the PU surface layer 1 and substrate layer 2 move, the mechanical claw of the angle adjustment mechanism 3 moves away from the coating roller group 3 and coating roller group 4. When the winding roller winds up, it drives the PU surface layer 1 and substrate layer 2 to move, thereby causing the outer coating roller group 7 to rotate relative to the inner drive roller group 6, and also causing the outer coating roller group 10 to rotate relative to the inner drive roller group 9. Figure 13 As shown, since the fixed shaft 11 is stationary and the intermediate drive plate 15 is stationary, the outer coating plate unit 16 rotates due to the drive of the PU surface layer 1 and the substrate layer 2. When the coating groove 19 of the outer coating plate unit 16 rotates to the drive arc surface 36, the lower end of the extrusion slider 20 is an inner straight bottom surface 53. The drive arc surface 36 abuts against the extrusion slider 20 and slides outward along the coating groove 19, thereby extruding and coating the polyurethane adhesive or solvent-free polyurethane glue in the injection chamber 44 onto the surface of the PU surface layer 1 and the substrate layer 2. Then, the extrusion slider 20, sliding outward, enters the side retaining ring 5 and the side retaining ring 8 after the outer coating roller group 1 and the outer coating roller group 2 continue to rotate. The liquid supply device provides polyurethane adhesive or solvent-free polyurethane glue to the injection chamber 44. When the liquid volume in the injection chamber 44 is insufficient, it can be replenished by the liquid storage tank 22. Then, it passes through the drive... The adhesive is applied by the extrusion of the moving claw, thus enabling continuous coating of the PU surface layer 1 and the substrate layer 2. Because the coating grooves 19 of adjacent outer coating plate units 16 are staggered, several intermittently distributed coating blocks 49 are formed on the surface of the PU surface layer 1, and several intermittently distributed coating blocks 50 are formed on the surface of the substrate layer 2. When the PU surface layer 1 and the substrate layer 2 are pressed together, the coating blocks 49 and 50 are complementary. Furthermore, both coating blocks 49 and 50 are intermittent coating modules, which reduces the amount of adhesive used while ensuring that the coating blocks 49 and 50 cover the bonding surface of the PU surface layer 1 and the substrate layer 2 during the extrusion operation. This also reduces the overflow of the coating liquid, resulting in a better bonding effect between the coating blocks 49 and 50.

[0075] The present invention has been described in detail above, with the aim of enabling those skilled in the art to understand and implement the invention. However, this description should not be construed as limiting the scope of protection of the invention. All equivalent changes or modifications made in accordance with the spirit and essence of the invention should be included within the scope of protection of the invention.

Claims

1. A PU upper production apparatus comprising: Coating roller group one (3), coating roller group two (4), extrusion roller one (47) and extrusion roller two (48), the surface of coating roller group one (3) is provided with PU surface layer (1), the surface of coating roller group two (4) is provided with substrate layer (2), PU surface layer (1) and substrate layer (2) are respectively coated through coating roller group one (3) and coating roller group two (4), and then are pressed through extrusion roller one (47) and extrusion roller two (48), to form a composite fabric, characterized in that: the coating roller group one (3) comprises side check ring one (5), inner drive roller group one (6) and outer coating roller group one (7), the coating roller group two (4) comprises side check ring two (8), inner drive roller group two (9) and outer coating roller group two (10), the outer coating roller group one (7) is rotatably arranged on the outer side of the inner drive roller group one (6), the side check ring one (5) and the PU surface layer (1) are wrapped on the outer end of the outer coating roller group one (7), the outer coating roller group two (10) is rotatably arranged on the outer side of the inner drive roller group two (9), the side check ring two (8) and the substrate layer (2) are wrapped on the outer end of the outer coating roller group two (10), the inner drive roller group one (6) and the inner drive roller group two (9) are the same in structure, and both comprise a fixed shaft (11) and a plurality of inner drive plate group units (12) arranged on the fixed shaft (11), the outer coating roller group one (7) and the outer coating roller group two (10) are the same in structure, and both comprise a plurality of outer coating plate group units (16), adjacent two outer coating plate group units (16) are tightly arranged and can relatively rotate and adjust, the outer coating plate group unit (16) comprises a coating main body shell (17), a cover plate (18) and a plurality of extrusion sliding blocks (20), a plurality of evenly arranged liquid storage tanks (22) are arranged on the outer periphery of the coating main body shell (17), coating grooves (19) are formed between adjacent liquid storage tanks (22), the extrusion sliding block (20) is slidably arranged in the coating groove (19), an injection cavity (44) is formed at the outer end of the extrusion sliding block (20) in the coating groove (19), the injection cavity (44) is filled with polyurethane adhesive or solvent-free polyurethane glue, the coating grooves (19) of adjacent outer coating plate group units (16) are staggered, when the PU surface layer (1) drives the outer coating roller group one (7) to rotate, the inner drive plate group unit (12) can drive the extrusion sliding block (20) to slide outward, so that the polyurethane adhesive or solvent-free polyurethane glue in the injection cavity (44) is extruded and coated on the surface of the PU surface layer (1), to form a plurality of spaced and cross-distributed coating glue blocks one (49), when the substrate layer (2) drives the outer coating roller group two (10) to rotate, the inner drive plate group unit (12) can drive the extrusion sliding block (20) to slide outward, so that the polyurethane adhesive or solvent-free polyurethane glue in the injection cavity (44) is extruded and coated on the surface of the substrate layer (2), to form a plurality of spaced and cross-distributed coating glue blocks two (50), when the PU surface layer (1) and the substrate layer (2) are pressed, the coating glue blocks one (49) and the coating glue blocks two (50) are complementary,The coated rubber block one (49) and the coated rubber block two (50) are made to cover the adhering surfaces of the PU surface layer (1) and the base material layer (2).

2. The PU upper production apparatus according to claim 1, characterized in that: The inner drive plate group unit (12) comprises a left support plate (13), a right support plate (14) and an intermediate drive plate (15), the intermediate drive plate (15) is located between the left support plate (13) and the right support plate (14), the left support plate (13) and the right support plate (14) are freely rotatably arranged on the fixed shaft (11), and the intermediate drive plate (15) is arranged on the fixed shaft (11) through an angle adjusting mechanism one.

3. The PU upper production apparatus according to claim 2, characterized in that: The two adjacent outer coating plate group units (16) are tightly attached and can be relatively rotated and adjusted through an angle adjusting mechanism two.

4. The PU upper production apparatus according to claim 2, characterized in that: The intermediate drive plate (15) comprises a rotating circular ring (26) and a plurality of drive claws (27), the plurality of drive claws (27) are arranged on the rotating circular ring (26), the drive claw (27) comprises a claw main body (37) and a claw end (38), the claw end (38) is arranged at one end of the claw main body (37) away from the rotating circular ring (26), and an outer side of the claw end (38) is provided with a drive cambered surface (36).

5. The PU upper production apparatus according to claim 4, characterized in that: The coating main body shell (17) comprises a side plate (21), a hexagonal inner hole (23) is formed in the inside of the side plate (21), there are six liquid storage tanks (22), the included angle between adjacent liquid storage tanks (22) is θ, θ=60°, the included angle between adjacent coating grooves (19) is γ, γ=60°, the included angle between the liquid storage tank (22) and the coating groove (19) is δ, δ=60°, the width of the coating groove (19) is L2, the liquid storage tank (22) comprises an inner arc plate (31), an outer arc plate (32), a side straight plate one (33) and a side straight plate two (34), the outer arc plate (32) is arranged at the outer end of the side straight plate one (33) and the side straight plate two (34), the inner arc plate (31) is arranged at the inner end of the side straight plate one (33) and the side straight plate two (34), and the arc length of the outer arc plate (32) is L3, then L3≥L2.

6. A PU upper production apparatus according to claim 5, characterized in that: The extrusion sliding block (20) comprises an outer arc top surface (35), an inner straight bottom surface (53), a first side surface (39) and a second side surface (40), the outer arc top surface (35) is located at the top end of the extrusion sliding block (20), the inner straight bottom surface (53) is located at the bottom end of the extrusion sliding block (20), the first side surface (39) is located at the left side of the extrusion sliding block (20), the second side surface (40) is located at the right side of the extrusion sliding block (20), when the extrusion sliding block (20) slides in the coating groove (19), the first side surface (39) and the second side surface (40) are tightly attached to the side straight plate two (34) and the side straight plate one (33) respectively, and the arc of the outer arc top surface (35) is the same as the arc of the outer arc plate (32); the side stop ring one (5) and the side stop ring two (8) both comprise an arc plate main body (41), and a liquid supply device is arranged on the outer side of the arc plate main body (41).

7. The PU shoe face processing process of the PU shoe face production equipment according to any one of claims 1-6, comprising the following steps: a. PU face layer (1) preparation: The thermoplastic PU coating is obtained by uniformly mixing 100 parts of polyurethane resin, 80 parts of water solvent or xylene solvent, 10 parts of color paste, 0.2 parts of leveling agent, 0.1 part of defoaming agent, and 1 part of crosslinking agent, uniformly coating the thermoplastic PU coating on release paper, and drying the release paper in a multi-stage oven to obtain the PU surface layer (1). b. Lamination and product manufacturing: A polyurethane adhesive or a solvent-free polyurethane glue is coated on the surface of the PU surface layer (1) and the surface of the substrate layer (2), and the PU surface layer (1) and the substrate layer (2) are laminated after passing through the pressing rollers one (47) and two (48) to form a composite fabric. characterized in that The surface of the PU surface layer (1) is coated by the coating roller group one (3), and the surface of the substrate layer (2) is coated by the coating roller group two (4). After coating by the coating roller group one (3), a plurality of spaced and cross-distributed coating blocks one (49) are formed on the PU surface layer (1), and after coating by the coating roller group two (4), a plurality of spaced and cross-distributed coating blocks two (50) are formed on the substrate layer (2). When the PU surface layer (1) and the substrate layer (2) are laminated, the coating blocks one (49) and the coating blocks two (50) are complementary, so that the coating blocks one (49) and the coating blocks two (50) cover the lamination surface of the PU surface layer (1) and the substrate layer (2).

8. A PU upper treatment process according to claim 7, characterized in that: The arrangement of the coating blocks one (49) on the PU surface layer (1) is that they are spaced along the longitudinal direction of the PU surface layer (1) and also spaced along the transverse direction of the PU surface layer (1). The arrangement of the coating blocks two (50) on the substrate layer (2) is that they are spaced along the longitudinal direction of the substrate layer (2) and also spaced along the transverse direction of the substrate layer (2). When the coating blocks one (49) and the coating blocks two (50) contact, a plurality of coating strips arranged along the longitudinal direction of the composite fabric are formed, which can be adhered together after passing through the pressing rollers one (47) and two (48), so that the coating blocks one (49) and the coating blocks two (50) cover the lamination surface of the PU surface layer (1) and the substrate layer (2).

9. A PU upper treatment process according to claim 8, characterized in that: The coated rubber blocks one (49) and the coated rubber blocks two (50) are of the same size, and the length of the coated rubber blocks one (49) and the coated rubber blocks two (50) is H1, and the width is H2. Along the longitudinal direction of the PU surface layer (1), the row of the coated rubber blocks one (49) closest to the upper side of the PU surface layer (1) is the first coated rubber block one row, and the second coated rubber block one row, …, the second M-1 coated rubber block one row, the second M coated rubber block one row, …, the Nth coated rubber block one row extend from the upper side to the lower side of the PU surface layer (1). M is a natural number greater than 1, and N is a natural number greater than 4. The projection of the second M-1 coated rubber block one row and the second M coated rubber block one row in the width direction of the PU surface layer (1) coincides at most with the leading end and the trailing end of the coated rubber blocks one (49). Along the longitudinal direction of the substrate layer (2), the row of the coated rubber blocks two (50) closest to the upper side of the substrate layer (2) is the first coated rubber block two row, and the second coated rubber block two row, …, the second M'-1 coated rubber block two row, the second M' coated rubber block two row, …, the N'th coated rubber block two row extend from the upper side to the lower side of the PU surface layer (1). M' is a natural number greater than 1, and N' is a natural number greater than 4. The projection of the second M'-1 coated rubber block row and the second M' coated rubber block row in the width direction of the substrate layer (2) coincides at most with the leading end and the trailing end of the coated rubber blocks two (50).

10. A PU upper treatment process according to claim 9, characterized in that: The distance between the adjacent coated rubber blocks one (49) in the second M-1 coated rubber block row is W2, the distance between the second M-1 coated rubber block one row and the second M+1 coated rubber block one row is W1, the distance between the adjacent coated rubber blocks one (49) in the second M coated rubber block one row is W4, and the distance between the second M coated rubber block one row and the second M+2 coated rubber block one row is W3. Then H1≤W2, W1>H2, H1≤W4, W3> H2; the distance between the adjacent coated rubber blocks two (50) in the second M'-1 coated rubber block two row is W6, the distance between the second M'-1 coated rubber block two row and the second M'+1 coated rubber block two row is W5, the distance between the adjacent coated rubber blocks two (50) in the second M' coated rubber block two row is W8, and the distance between the second M' coated rubber block two row and the second M'+2 coated rubber block two row is W7. Then H1≤W6, W5>H2, H1≤W8, W7> H2.

Images