TPU mesh fabric production process and production equipment

Abstract

The TPU mesh fabric production process and production equipment belong to the technical field of TPU composite fabric production and processing, and the TPU mesh fabric production process comprises a TPU hot melt adhesive film production process, specifically comprising a film calendering process, and a cooling and surface smoothing finishing process. The TPU hot melt adhesive film is guided by a film guiding head assembly, and the winding operation of the TPU hot melt adhesive film can be quickly and automatically completed. Moreover, the TPU hot melt adhesive film can be well calendered and smoothed during the winding operation, so that the formed TPU hot melt adhesive film has better performance. The film calendering roller group of the TPU hot melt adhesive film production equipment comprises an upper extrusion roller group and a lower extrusion roller group. The upper extrusion roller group and the lower extrusion roller group each comprise an intermediate roller and a plurality of sub-moving rollers. Through the cooperation of the intermediate roller and the plurality of sub-moving rollers, a calendering roller structure with gradually decreasing gaps can be formed during the calendering operation, so that the calendering effect is better.

Description

Technical Field

[0001] This invention relates to the field of TPU composite fabric processing technology, specifically to a TPU mesh fabric production process and equipment. Background Technology

[0002] TPU (Thermoplastic polyurethanes) is widely used due to its good elasticity, excellent physical properties, and good mechanical strength. It is a commonly used plastic material in the plastics processing industry. TPU hot melt adhesive films made from TPU have developed rapidly. Compared with the currently dominant EVA hot melt adhesive films and synthetic rubber hot melt adhesive films, it can meet customers' needs for high adhesion while also having good physical properties, such as good elasticity and high mechanical strength. Therefore, TPU hot melt adhesive films have been laminated with mesh fabrics to form TPU mesh fabrics. The surface smoothness and surface properties of the formed TPU hot melt adhesive film have a significant impact on the formation of TPU mesh fabrics. Existing TPU hot melt adhesive films are generally made through processes such as calendering, casting, and coating. Although the issue of how to consider its adhesion has been raised, the smoothness and uniformity of the film formed by calendering have not been considered.In existing TPU film production equipment, such as the TPU film casting and extrusion device disclosed in Patent Document 1 (CN110789038A), the TPU material is melted in a furnace and discharged through a discharge pipe onto a cooling roller. The cooling roller further cools the TPU film, and an air pump blows air onto the TPU film through an air nozzle, further improving the cooling effect. Although this simplifies the structure of the TPU casting and extrusion device by eliminating the use of extrusion rollers, the formation of the TPU film relies entirely on the combined action of gravity and airflow. The method used cannot effectively control the thickness of the formed TPU film, and the uniformity of the formed film is also lacking. TPU films formed by this device are also prone to wrinkling. For example, the film casting machine disclosed in Patent Document 2 (CN116985320A) addresses the problem that when the casting rollers extrude the film, the edges of the film overflow, resulting in a thinner edge and a thicker center, making it difficult to achieve precise and uniform casting. Therefore, it sets adjustable edge thickness limiting bars at both edges of the film. The film width data controls the spacing of the edge thickness limiting strips and coordinates with the thickness-linked extrusion to obtain a uniformly formed cast film. Although the film edge is limited, the film between the two rollers is still suspended. In this case, if the film edge is still limited, the suspended film may form wrinkles, ultimately affecting the quality of the formed film. Finally, for example, the film stretching system disclosed in Patent Document 3 (CN118977404A) addresses the problem of film thickness uniformity by setting clamps at the film edge and then driving the clamps to move, thereby causing the film edge to be stretched laterally by the clamps. It sets a first shaping mechanism and a second shaping mechanism between the rollers. Through the clamping and shaping of the two shaping mechanisms, it can make the thickness of the formed film consistent. In addition, a temperature regulating mechanism is set on the outside of the shaping mechanism to regulate the temperature of the formed film. However, its shaping mechanism is just two fixed clamping plates, which cannot adapt well to the movement of the film, and the presence of fixed clamping plates also makes the film winding work more complicated.

[0003] In summary, existing technologies for TPU mesh fabric production, especially the preparation of TPU hot melt adhesive film, mostly focus on improving the adhesion of the TPU hot melt adhesive film. They do not comprehensively consider the flatness and uniformity of the formed film. Even though existing technologies have improvements to address the problem of wrinkles in TPU films and have implemented edge thickness limiting strips to address the issue of thinner edges than the center of the formed calendered film, and have also included a shaping mechanism between the two rollers to ensure the quality of the formed film, none of these existing technologies include a film processing device capable of dynamically handling the film transmitted between the two rollers, an automatic film winding guide device, or a solution to ensure the continuity of film production when film breakage is detected during film transmission. Therefore, this application provides a TPU mesh fabric production process and equipment that can dynamically handle the TPU hot melt adhesive film transmitted between adjacent rollers, automatically wind the film, produce a more uniform and wrinkle-free formed TPU hot melt adhesive film, and continue film production even after film breakage. Summary of the Invention

[0004] The technical problem to be solved by this invention is to provide a novel TPU mesh fabric production process, comprising the following steps: I. TPU hot melt adhesive film production: a. Preparation of molten material: TPU granules, tackifying resin, crosslinking agent, and UV stabilizer are added to a high-speed mixer for premixing to obtain a melt; the melt is then added to an extruder assembly. b. Guiding material discharge: The thin material extruded by the extruder assembly is held by the film guide head assembly, which is guided by the guide rail assembly; c. Calendering to form a film: After the film guide head assembly passes through the film calendering roller group, the film calendering roller group calenders the thin material to form a TPU hot melt adhesive film of a predetermined thickness. d. Smoothing and trimming the membrane surface: After the membrane guide head assembly passes through the membrane smoothing assembly, the membrane smoothing assembly performs a surface smoothing and trimming operation on the TPU hot melt adhesive film.

[0005] II. Mesh Fabric Composite: The TPU mesh fabric is formed by hot pressing the mesh fabric with the TPU hot melt adhesive film formed in step one.

[0006] Preferably, the process further includes the following after step d: e. Film winding: The TPU hot melt adhesive film is guided by the film guide head assembly to move, and the TPU hot melt adhesive film is guided by the end film guide assembly to wind the TPU hot melt adhesive film onto the take-up roller assembly.

[0007] Furthermore, a novel TPU hot melt adhesive film production equipment is provided. The equipment includes: a base assembly; along the length of the base assembly, an extruder assembly, a film calendering roller group, and a film smoothing assembly are sequentially arranged on the base assembly; along the width of the base assembly, guide rail assemblies are arranged on both sides of the film calendering roller group and the film smoothing assembly; a film guide head assembly guides the thin material sequentially through the film calendering roller group and the film smoothing assembly; the thin material is calendered by the film calendering roller group to form a TPU hot melt adhesive film; the film calendering roller group includes a first support frame plate, a second support frame plate, and a guide rail assembly located on both sides of the film calendering roller group. The upper and lower extrusion roller groups between the support frame plate and the second support frame plate have a first rotating plate group and a second rotating plate group respectively arranged on both sides of the upper extrusion roller group, and a third rotating plate group and a fourth rotating plate group respectively arranged on both sides of the lower extrusion roller group. Both the upper and lower extrusion roller groups include an intermediate roller and several sub-moving rollers. When calendering the thin material, the several sub-moving rollers can be guided by the first rotating plate group, the second rotating plate group, the third rotating plate group and the fourth rotating plate group to gradually approach each other in a direction away from the extruder assembly, and gradually calender the thin material to form the TPU hot melt adhesive film.

[0008] Furthermore, the film smoothing assembly includes an upper smoothing assembly and a lower smoothing assembly. Both the upper and lower smoothing assemblies include a first smoothing roller group and a second smoothing roller group that are slidably disposed along the length direction of the base assembly. The first smoothing roller group of the upper smoothing assembly and the first smoothing roller group of the lower smoothing assembly can abut against each other and, while sliding at the same speed as the TPU hot melt adhesive film, can smooth the TPU hot melt adhesive film along the width direction. The second smoothing roller group of the upper smoothing assembly and the second smoothing roller group of the lower smoothing assembly can abut against each other and, while sliding at the same speed as the TPU hot melt adhesive film, can smooth the TPU hot melt adhesive film along the width direction. The first smoothing roller group and the second smoothing roller group can cross each other.

[0009] Furthermore, the first rotating plate group is rotatably disposed on the upper inner side of the first support frame plate, the third rotating plate group is rotatably disposed on the lower inner side of the first support frame plate, the second rotating plate group is rotatably disposed on the upper inner side of the second support frame plate, and the fourth rotating plate group is rotatably disposed on the lower inner side of the second support frame plate. The first, second, third, and fourth rotating plate groups each include a middle circular plate and an edge circular plate. A first groove is formed in the middle circular plate, and a second groove is formed in the edge circular plate. The first groove and the second groove are connected. The two ends of the plurality of sub-moving rollers are respectively connected through a first linkage plate group and a second linkage plate group. When the calendering operation is not performed, the plurality of sub-moving rollers are housed in the first groove. When the calendering operation is performed, the plurality of sub-moving rollers are driven by the roller pusher to slide along the first groove and slide into the second groove of the edge circular plate. The plurality of sub-moving rollers form an arrangement structure in the second groove that gradually approaches each other in a direction away from the extruder assembly.

[0010] Furthermore, the first chute includes a first arc segment and a first vertical segment, and the second chute includes a second vertical segment and a second arc segment. The first vertical segment and the second vertical segment are connected to each other to form a vertical transition segment connecting the first arc segment and the second arc segment.

[0011] Furthermore, both the first and second support plates have a central vertical groove, and two vertical sliders are slidably arranged in the central vertical groove. The two ends of the central roller of the upper extrusion roller group are respectively rotatably arranged in the upper vertical slider of the two vertical sliders, and the two ends of the central roller of the lower extrusion roller group are respectively rotatably arranged in the lower vertical slider of the two vertical sliders. A central through groove is also provided in the central circular plate, and the central rollers of the upper extrusion roller group and the lower extrusion roller group can approach each other through the central through groove.

[0012] Furthermore, both the upper and lower smoothing components include a support frame. The support frame includes a central vertical beam, a first side vertical beam, a second side vertical beam, and several connecting crossbeams. The central vertical beam, the first side vertical beam, and the second side vertical beam are parallel to each other. The central vertical beam is located between the first side vertical beam and the second side vertical beam. The central vertical beam, the first side vertical beam, and the second side vertical beam are connected by several connecting crossbeams. The first smoothing roller group is slidably mounted on the central vertical beam via a first lifting telescopic rod. The second smoothing roller group is slidably mounted on the first side vertical beam and the second side vertical beam via a second lifting telescopic rod. The second smoothing roller group includes a first transverse sliding roller group and a second transverse sliding roller group. When the second smoothing roller group smooths the TPU hot melt adhesive film, the first transverse sliding roller group and the second transverse sliding roller group are connected to each other. When the first smoothing roller group and the second smoothing roller group cross each other, the first transverse sliding roller group and the second transverse sliding roller group are separated from each other.

[0013] Furthermore, both the first and second transverse sliding roller groups include a first roller frame, a second roller frame, and a connecting beam. The connecting beam connects the first and second roller frames. A first clamping roller is rotatably disposed within the first roller frame, and a second clamping roller is rotatably disposed within the second roller frame. A first smoothing roller is slidably disposed between the first and second roller frames. The two ends of the first smoothing roller are respectively disposed on the inner sides of the first and second roller frames via a first sliding force assembly and a second sliding force assembly. The rotation axes of the first and second clamping rollers are parallel, and the rotation axis of the first smoothing roller is perpendicular to the rotation axes of both the first and second clamping rollers.

[0014] Further, the first smoothing roller assembly includes a third roller frame and a fourth roller frame, which are fixedly connected by a connecting beam two. A third clamping roller is rotatably arranged inside the third roller frame, and a fourth clamping roller is rotatably arranged inside the fourth roller frame. A second smoothing roller and a third smoothing roller are slidably arranged parallel to each other between the third roller frame and the fourth roller frame. The connecting beam two is located in the middle of the third roller frame and the fourth roller frame. The second smoothing roller and the third smoothing roller are separated by the connecting beam two. The two ends of the second smoothing roller are slidably arranged inside the fourth roller frame and the third roller frame through a fifth sliding force assembly and a sixth sliding force assembly, respectively. The two ends of the third smoothing roller are slidably arranged inside the fourth roller frame and the third roller frame through a seventh sliding force assembly and an eighth sliding force assembly, respectively. The rotation axis of the third clamping roller is parallel to the rotation axis of the fourth clamping roller, and the rotation axes of the second smoothing roller and the third smoothing roller are perpendicular to the rotation axes of the third clamping roller and the fourth clamping roller.

[0015] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art: 1. The TPU mesh fabric production process of the present invention, especially the TPU hot melt adhesive film production process, includes a film calendering process and a cooling and surface smoothing finishing process. The TPU hot melt adhesive film is guided by a film guide head assembly, which can quickly and automatically complete the film winding operation of the TPU hot melt adhesive film. Moreover, during the film winding operation, the TPU hot melt adhesive film can also be effectively calendered and smoothed, resulting in better performance of the formed TPU hot melt adhesive film. In addition, the film guide head assembly can be used in conjunction with the film calendering roller group, the film smoothing component, and the winding roller group, which can effectively handle the TPU hot melt adhesive film in the event of film breakage, ensuring the quality of film forming.

[0016] 2. The film calendering roller group of the TPU hot melt adhesive film production equipment of the present invention includes an upper extrusion roller group and a lower extrusion roller group. Both the upper extrusion roller group and the lower extrusion roller group include an intermediate roller and several sub-moving rollers. By cooperating with the intermediate rollers and the several sub-moving rollers, a calendering roller structure with gradually decreasing gaps can be formed during the calendering operation, resulting in a better calendering effect. In order to adapt to the movement of the several sub-moving rollers, a first rotating plate group, a second rotating plate group, a third rotating plate group, and a fourth rotating plate group are also set accordingly. The first rotating plate group, the second rotating plate group, the third rotating plate group, and the fourth rotating plate group have the same structure, all including a middle circular plate and an edge circular plate. A first sliding groove is set in the middle circular plate, and a second sliding groove is set in the edge circular plate. By moving the several sub-moving rollers from the first sliding groove to the second sliding groove, the several sub-moving rollers are arranged in an arc shape, so that the gap between the rollers gradually decreases during the calendering operation, achieving a good calendering operation.

[0017] 3. The operation of the intermediate rollers in the upper and lower extrusion roller groups of the present invention is coordinated with the operation of the first, second, third, and fourth rotating plate groups. By rotating the intermediate circular plate onto the first and second support plates, and cooperating with the intermediate through groove opened in the intermediate circular plate, the intermediate roller can only operate after the intermediate through groove is in a vertical state and several sub-moving rollers have moved a certain distance in the first sliding groove and no longer obstruct the sliding of the intermediate roller in the intermediate through groove. This can prevent the intermediate rollers from getting close to each other while the film guide head assembly is still passing through the film calendering roller group, thus avoiding damage to the TPU hot melt adhesive film and collision with the film guide head assembly.

[0018] 4. The film smoothing assembly includes a first smoothing roller group and a second smoothing roller group capable of reciprocating motion. To accommodate the reciprocating and alternating motion of the first and second smoothing roller groups, the second smoothing roller group consists of two first and second transverse sliding roller groups that can engage or disengage. Furthermore, in conjunction with the movement of the first and second lifting telescopic rods, the first and second smoothing roller groups pass through each other. Additionally, during the transverse smoothing operation of the TPU hot melt adhesive film, clamps perpendicular to the smoothing rollers are also provided. The rollers clamp the TPU hot melt adhesive film, ensuring stable support for the film during the smoothing operation and preventing it from being suspended, resulting in better smoothing. Furthermore, the inclusion of a central vertical beam, a first side vertical beam, and a second side vertical beam parallel to the direction of movement of the TPU hot melt adhesive film allows the first and second smoothing roller groups to move at the same speed as the TPU hot melt adhesive film. This ensures that the smoothing rollers only move laterally relative to the TPU hot melt adhesive film, reducing wrinkles during the smoothing process. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the TPU hot melt adhesive film production equipment of this application. Figure 1 ; Figure 2 This is a schematic diagram of the TPU hot melt adhesive film production equipment of this application. Figure 2 ; Figure 3 (a) is the front view of the TPU hot melt adhesive film production equipment, (b) is the top view of the TPU hot melt adhesive film production equipment, and (c) is the AA section view of (b). Figure 4 (a) is a schematic diagram of the film calendering roller assembly, (b) is a side view of the film calendering roller assembly, and (c) is a BB cross-sectional view of (b). Figure 5 Schematic diagram of an explosion of a film calendering roller assembly. Figure 1 ; Figure 6 Schematic diagram of an explosion of a film calendering roller assembly. Figure 2 ; Figure 7 This is a schematic diagram of the film calendering roller assembly in the open state. Figure 8 (a) is a side view of the film calendering roller assembly in the open state, and (b) is a CC cross-sectional view of (a). Figure 9 (a) is a schematic diagram of the lower smoothing component structure, and (b) is a schematic diagram of the upper smoothing component structure. Figure 10This is a schematic diagram of an explosion involving the upper or lower smoothing component. Figure 11 (a) in the middle is Figure 10 Enlarged views D and (b) are Figure 10 Enlarged view E; Figure 12 (a) is a schematic diagram of the second transverse sliding roller group, and (b) is a schematic diagram of the first transverse sliding roller group. Figure 13 This is an exploded view of either the first or second transverse sliding roller group. Figure 14 (a) in the diagram is a schematic of the first smoothing roller group. Figure 1 (b) is a schematic diagram of the first smoothing roller group. Figure 2 ; Figure 15 This is a schematic diagram of the explosion of the first smoothing roller assembly; Figure 16 This is a schematic diagram of the membrane guide head assembly structure; Figure 17 This is an exploded view of the membrane guide head assembly; Figure 18 This is a schematic diagram of the base component structure; Figure 19 for Figure 18 The magnified view F.

[0020] The components include: 1. TPU hot melt adhesive film; 2. Extruder assembly; 3. Film calendering roller assembly; 4. Film smoothing assembly; 5. Film guide head assembly; 6. Guide rail assembly; 7. Base assembly; 8. Rewinding roller assembly; 9. End film guide assembly; 10. Film guide roller assembly; 11. First support frame plate; 12. Second support frame plate; 13. Upper extrusion roller assembly; 14. Lower extrusion roller assembly; 15. First rotating plate assembly; 16. Second rotating plate assembly; 17. Third rotating plate assembly; 18. Fourth rotating plate assembly; 19. Intermediate roller; 20. Sub-moving roller; 21. First linkage plate assembly; 22. Second linkage plate assembly; 23. Middle circular plate; 24. Edge circular plate; 25. First chute; 26. Second chute; 27. Lower smoothing assembly; 28. 29. Upper smoothing assembly; 30. Support frame; 31. First guide slider; 32. First smoothing roller assembly; 33. Second guide slider assembly; 34. Second smoothing roller assembly; 35. Middle vertical beam; 36. First side vertical beam; 37. Second side vertical beam; 38. First transverse sliding roller assembly; 39. Second transverse sliding roller assembly; 40. First roller frame; 41. Second roller frame; 42. Connecting beam one; 43. First clamping roller; 44. Second clamping roller; 45. First smoothing roller; 46. First sliding force assembly; 47. Second sliding force assembly; 48. Third sliding force assembly; 49. Fourth sliding force assembly; 50. First lifting telescopic rod; 51. Second lifting telescopic rod; 52. Third roller frame; 53. Fourth roller frame; 54. 3. Connecting beam two; 54. Third clamping roller; 55. Fourth clamping roller; 56. Second smoothing roller; 57. Third smoothing roller; 58. Fifth sliding force assembly; 59. Sixth sliding force assembly; 60. Seventh sliding force assembly; 61. Eighth sliding force assembly; 62. Guide head housing; 63. First telescopic shaft assembly; 64. Second telescopic shaft assembly; 65. Receiving cavity; 66. Upper clamping roller one; 67. Lower clamping roller one; 68. First clamping roller adjusting assembly; 69. Second clamping roller adjusting assembly; 70. Base plate; 71. Extruder support frame; 72. Support frame plate seat; 73. Smoothing component support seat; 74. Guide rail support seat; 75. Smoothing component connecting seat; 76. First horizontal and vertical guide rail section; 77. Second horizontal and vertical guide rail. Section; 78. First vertical guide rail section; 79. Second vertical guide rail section; 80. Guide rail slider; 81. Upper fixed plate one; 82. Sliding seat; 83. Roller support frame; 84. Third lifting telescopic rod; 85. Guide pressure roller; 86. Middle vertical groove; 87. Track mounting groove; 88. Vertical slider; 89. Middle through groove; 90. First arc section; 91. First vertical section; 92. Second vertical section; 93. Second arc section; 94. End of limiting arc; 95. Upper cover plate; 96. Connecting crossbeam; 97. Upper guide block; 98. Lower sliding seat; 99. Lower slider; 100. Vertical lead screw; 101. First upper slider; 102. First lower slider; 103. Connecting plate; 104. First hinge hole; 105. Second hinge hole. Detailed Implementation

[0021] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Example

[0022] A TPU mesh fabric manufacturing process includes the following steps: I. TPU hot melt adhesive film production: a. Preparation of molten material: Add 80 parts of TPU granules, 40 parts of tackifying resin, 3 parts of crosslinking agent, and 2 parts of UV stabilizer to a high-speed mixer for premixing to obtain a melt; add the melt to extruder assembly 2; b. Guiding material discharge: The thin material extruded by extruder assembly 2 is held by film guide head assembly, and then guided by guide rail assembly 6 by film guide head assembly 5 to exit the machine; c. Calendering to form a film: After the film guide head assembly 5 passes through the film calendering roller group 3, the film calendering roller group 3 calenders the thin material to finally form a TPU hot melt adhesive film 1 of a predetermined thickness. d. Film cooling and surface smoothing / trimming: After the membrane guide head assembly 5 passes through the membrane smoothing assembly 4, the membrane smoothing assembly 4 performs cooling and surface smoothing and trimming operations on the TPU hot melt adhesive film 1. e. Film winding: The TPU hot melt adhesive film 1 is guided by the film guide head assembly 5 to move, and the TPU hot melt adhesive film 1 is guided by the end film guide assembly 9 to be wound onto the take-up roller assembly 8. The film guide head assembly 5 then moves through the guide rail assembly 6 to the vicinity of the discharge port of the extruder assembly 2, waiting for the next thin material guiding operation.

[0023] II. Mesh Fabric Composite: The TPU mesh fabric is formed by hot-pressing the mesh fabric with the TPU hot melt adhesive film 1 formed in step one. The specific hot-pressing steps are common knowledge in the field and will not be described in detail here.

[0024] Preferably, it also includes a base fabric, wherein the mesh fabric is laminated with the base fabric by a TPU hot melt adhesive film 1.

[0025] Preferably, the melting temperature in the high-speed mixer in step a is 100-155℃, the stirring speed is 100-300 r / min, and the stirring time is 4-10 minutes.

[0026] Preferably, the TPU particles are adipic acid-based polyester TPU particles and / or polycarbonate-based polyester TPU particles; the tackifying resin is rosin resin and / or petroleum resin; the crosslinking agent is tert-amyl benzoate and / or tert-butyl peroxide benzoate; and the UV stabilizer is N-(2-ethoxyphenyl)-N′-(4-ethylphenyl)-ethylenediamide and / or 2-(2-hydroxy-3,5-di-tert-amylphenyl)benzotriazole. Example

[0027] like Figures 1-19As shown, it also includes a novel TPU hot melt adhesive film production equipment, comprising: an extruder assembly 2, a film calendering roller group 3, a film smoothing assembly 4, a film guide head assembly 5, a guide rail assembly 6, and a base assembly 7. Along the length of the base assembly 7, the extruder assembly 2, the film calendering roller group 3, and the film smoothing assembly 4 are sequentially arranged on the base assembly 7. Along the width of the base assembly 7, the guide rail assembly 6 is arranged on both sides of the film calendering roller group 3 and the film smoothing assembly 4. The film guide head assembly 5 is guided by the guide rail assembly 6 and can clamp the thin material extruded from the end of the extruder assembly 2, and then guide it... The thin material passes sequentially through the film calendering roller group 3 and the film smoothing assembly 4. After being calendered by the film calendering roller group 3, the thin material forms a TPU hot melt adhesive film 1. The film calendering roller group 3 includes a first support plate 11, a second support plate 12, and an upper extrusion roller group 13 and a lower extrusion roller group 14 located between the first support plate 11 and the second support plate 12. A first rotating plate group 15 and a second rotating plate group 16 are also arranged on both sides of the upper extrusion roller group 13, and a third rotating plate group 17 and a fourth rotating plate group 18 are also arranged on both sides of the lower extrusion roller group 14. The upper extrusion roller group 13 and the lower extrusion roller group 14 have the same structure, both including an intermediate roller 19 and a... The dry moving rollers 20, when calendering the thin material, are guided by the first rotating plate group 15, the second rotating plate group 16, the third rotating plate group 17, and the fourth rotating plate group 18 to gradually approach each other in a direction away from the extruder assembly 2, thereby gradually calendering the thin material to finally form the TPU hot melt adhesive film 1. The film smoothing assembly 4 includes an upper smoothing assembly 28 and a lower smoothing assembly 27. The upper smoothing assembly 28 and the lower smoothing assembly 27 have the same structure, both including a first smoothing roller group 31 and a second smoothing roller group 33 that are slidably arranged along the length direction of the base assembly 7. The first smoothing roller group 31 of the upper smoothing component 28 and the first smoothing roller group 31 of the lower smoothing component 27 can abut against each other, and while sliding at the same speed as the TPU hot melt adhesive film 1, they can smooth the TPU hot melt adhesive film 1 along the width direction. The second smoothing roller group 33 of the upper smoothing component 28 and the second smoothing roller group 33 of the lower smoothing component 27 can abut against each other, and while sliding at the same speed as the TPU hot melt adhesive film 1, they can smooth the TPU hot melt adhesive film 1 along the width direction. The first smoothing roller group 31 and the second smoothing roller group 33 can cross each other.

[0028] like Figures 4-8As shown, the first rotating plate group 15 is rotatably disposed on the upper inner side of the first support frame plate 11, the third rotating plate group 17 is rotatably disposed on the lower inner side of the first support frame plate 11, the second rotating plate group 16 is rotatably disposed on the upper inner side of the second support frame plate 12, and the fourth rotating plate group 18 is rotatably disposed on the lower inner side of the second support frame plate 12. The first rotating plate group 15, the second rotating plate group 16, the third rotating plate group 17, and the fourth rotating plate group 18 have the same structure, each including a middle circular plate 23 and an edge circular plate 24. A first sliding groove 25 is formed in the middle circular plate 23, and a second sliding groove 26 is formed in the edge circular plate 24. The first sliding groove 25 and the second sliding groove 26 are connected. The two ends of the moving roller 20 are connected by the first linkage plate group 21 and the second linkage plate group 22 respectively. When the calendering operation is not performed, the plurality of sub-moving rollers 20 are housed in the first slide groove 25. When the calendering operation is performed, the plurality of sub-moving rollers 20 are driven by a roller pusher (not shown in the figure, such as a slider that can be driven by a telescopic drive or a motor at the end of the first slide groove 25 and slides along the first slide groove 25, and the slider pushes the sub-moving rollers 20 to slide along the first slide groove 25) to slide into the second slide groove 26 of the edge circular plate 24. The plurality of sub-moving rollers 20 form an arrangement structure in the second slide groove 26 that gradually approaches each other in a direction away from the extruder assembly 2.

[0029] like Figure 4 As shown in (c), the first slide groove 25 includes a first arc segment 90 and a first vertical segment 91, and the second slide groove 26 includes a second vertical segment 92 and a second arc segment 93. The first vertical segment 91 and the second vertical segment 92 are connected to each other to form a vertical transition segment connecting the first arc segment 90 and the second arc segment 93. Preferably, let α be the central angle of the first arc segment 90 and β be the central angle of the second arc segment 93, then 180°≤α<270° and 60°<β≤90°. Preferably, a limiting arc end 94 is provided at the end of the first arc segment 90 away from the first vertical segment 91. The limiting arc end 94 is used to prevent the sub-moving roller 20 from sliding out of the first arc segment 90.

[0030] Furthermore, such as Figures 5-6As shown, both the first support plate 11 and the second support plate 12 have a central vertical groove 86. Two vertical sliders 88 are slidably arranged in the central vertical groove 86. The two ends of the central roller 19 of the upper extrusion roller group 13 are respectively rotatably arranged in the upper vertical slider 88 of the two vertical sliders 88. The two ends of the central roller 19 of the lower extrusion roller group 14 are respectively rotatably arranged in the lower vertical slider 88 of the two vertical sliders 88. A central through groove 89 is also provided in the central circular plate 23. The central rollers 19 of the upper extrusion roller group 13 and the lower extrusion roller group 14 can approach each other through the central through groove 89.

[0031] Furthermore, the first linkage plate group 21 and the second linkage plate group 22 have the same structure, both consisting of several connecting plates 103 that are hinged to each other end to end. The connecting plate 103 includes a first hinge hole 104 and a second hinge hole 105. Two adjacent connecting plates 103 are hinged to each other by the ends of the sub-moving roller 20 passing through the first hinge hole 104 and the second hinge hole 105, respectively.

[0032] like Figures 7-8 As shown, when the film guide assembly 5 passes through the film calendering roller group 3, the first rotating plate group 15 and the second rotating plate group 16 deflect outward at a first angle in the first direction, and the third rotating plate group 17 and the fourth rotating plate group 18 deflect outward at a second angle in the second direction. At this time, the film calendering roller group 3 is in the open state, and the first and second directions point in opposite directions. (Refer to...) Figure 7 As shown, the first direction can be counterclockwise, and the second direction can be clockwise. After the film guide head assembly 5 has completely passed through the film calendering roller group 3, the first rotating plate group 15, the second rotating plate group 16, the third rotating plate group 17, and the fourth rotating plate group 18 are reset. The above actions can be achieved by setting reset springs between the first support frame plate 11 and the first rotating plate group 15, between the first support frame plate 11 and the third rotating plate group 17, between the second rotating plate group 16 and the second support frame plate 12, and between the fourth rotating plate group 18 and the second support frame plate 12. This allows the film calendering roller group 3 to automatically perform the relevant actions. Of course, the reset springs can also be replaced by a drive cylinder or a drive motor. The specific arrangement is common knowledge in the art and will not be described in detail here.

[0033] Further, refer to Figures 9-15The upper smoothing component 28 and the lower smoothing component 27 have the same structure, both including a support frame 29. The support frame 29 includes a central vertical beam 34, a first side vertical beam 35, a second side vertical beam 36, and several connecting crossbeams 96. The central vertical beam 34, the first side vertical beam 35, and the second side vertical beam 36 are parallel to each other. The central vertical beam 34 is located between the first side vertical beam 35 and the second side vertical beam 36. The central vertical beam 34, the first side vertical beam 35, and the second side vertical beam 36 are connected by several connecting crossbeams 96. The first smoothing roller group 31 slides through the first lifting telescopic rod 49. The second smoothing roller group 33 is slidably mounted on the middle vertical beam 34 via the second lifting telescopic rod 50 on the first side vertical beam 35 and the second side vertical beam 36. The second smoothing roller group 33 includes a first transverse sliding roller group 37 and a second transverse sliding roller group 38. When the second smoothing roller group 33 smooths the TPU hot melt adhesive film 1, the first transverse sliding roller group 37 and the second transverse sliding roller group 38 are connected to each other. When the first smoothing roller group 31 and the second smoothing roller group 33 cross each other, the first transverse sliding roller group 37 and the second transverse sliding roller group 38 are separated from each other.

[0034] The first transverse sliding roller group 37 and the second transverse sliding roller group 38 have the same structure, both including a first roller frame 39, a second roller frame 40 and a connecting beam 41. The connecting beam 41 connects the first roller frame 39 and the second roller frame 40. A first clamping roller 42 is rotatably arranged in the first roller frame 39, and a second clamping roller 43 is rotatably arranged in the second roller frame 40. A first smoothing roller 44 is slidably arranged between the first roller frame 39 and the second roller frame 40. The two ends of the first smoothing roller 44 are respectively arranged on the inner side of the first roller frame 39 and the second roller frame 40 through a first sliding force assembly 45 and a second sliding force assembly 46. The rotation axes of the first clamping roller 42 and the second clamping roller 43 are parallel, and the rotation axis of the first smoothing roller 44 is perpendicular to the rotation axes of the first clamping roller 42 and the second clamping roller 43.

[0035] Furthermore, a third sliding force assembly 47 and a fourth sliding force assembly 48 are respectively provided on the upper side away from the center of the first roller frame 39 and the second roller frame 40. The third sliding force assembly 47 and the fourth sliding force assembly 48 are respectively connected to a second lifting telescopic rod 50. The upper end of the second lifting telescopic rod 50 is connected to a second guide slider group 32. The second lifting telescopic rod 50 at the first transverse sliding roller group 37 is slidably disposed in the first side vertical beam 35 through the second guide slider group 32. The second lifting telescopic rod 50 at the second transverse sliding roller group 38 is slidably disposed in the second side vertical beam 36 through the second guide slider group 32.

[0036] like Figure 12As shown in (a), the first roller frame 39 and the second roller frame 40 are provided with a snap-fit ​​structure, such as a snap-fit ​​protrusion and a snap-fit ​​groove, on the side away from the connecting beam 41. When the first transverse sliding roller group 37 and the second transverse sliding roller group 38 are close to each other, they can snap into each other, increasing the stability of the docking of the first transverse sliding roller group 37 and the second transverse sliding roller group 38.

[0037] like Figure 11 As shown, the second guide slider group 32 includes an upper guide block 97, a lower slide seat 98, and a lower slider 99. The lower slide seat 98 is fixedly disposed at the lower end of the upper guide block 97, and the lower slider 99 is slidably disposed within the lower slide seat 98. The lower slider 99 slides through the ninth sliding force component.

[0038] like Figures 14-15 As shown, the first smoothing roller assembly 31 includes a third roller frame 51 and a fourth roller frame 52, which are fixedly connected by a connecting beam 53. A third clamping roller 54 is rotatably disposed within the third roller frame 51, and a fourth clamping roller 55 is rotatably disposed within the fourth roller frame 52. A second smoothing roller 56 and a third smoothing roller 57 are slidably disposed parallel to each other between the third roller frame 51 and the fourth roller frame 52. The connecting beam 53 is disposed in the middle of the third roller frame 51 and the fourth roller frame 52, and the second smoothing roller 56 and the third smoothing roller 57 are separated by the connecting beam 53. The two ends of the second smoothing roller 56 are slidably disposed on the inner sides of the fourth roller frame 52 and the third roller frame 51 through the fifth sliding force assembly 58 and the sixth sliding force assembly 59, respectively. The two ends of the third smoothing roller 57 are slidably disposed on the inner sides of the fourth roller frame 52 and the third roller frame 51 through the seventh sliding force assembly 60 and the eighth sliding force assembly 61, respectively. The rotation axis of the third clamping roller 54 is parallel to the rotation axis of the fourth clamping roller 55. The rotation axes of the second smoothing roller 56 and the third smoothing roller 57 are perpendicular to the rotation axes of the third clamping roller 54 and the fourth clamping roller 55.

[0039] like Figures 16-17As shown, the membrane guide head assembly 5 includes a guide head housing 62, an upper clamping roller 66, a lower clamping roller 67, a first telescopic shaft group 63, and a second telescopic shaft group 64. The guide head housing 62 has an inner cavity 65. The two ends of the upper clamping roller 66 and the lower clamping roller 67 are positioned within the inner cavity 65 via a first clamping roller adjusting assembly 68 and a second clamping roller adjusting assembly 69. The first telescopic shaft group 63 and the second telescopic shaft group 64 are respectively located on the outer sides of both ends of the guide head housing 62. Guide rail sliders 80 are connected to the ends of the first telescopic shaft group 63 and the second telescopic shaft group 64, and the guide rail sliders 80 are slidably disposed within the guide rail assembly 6. The first telescopic shaft group 63 and the second telescopic shaft group 64 may be composed of a sliding sleeve and a sliding shaft. The sliding shaft is slidably disposed within the sliding sleeve, and the sliding shaft may be driven by a hydraulic cylinder or a pneumatic cylinder to achieve extension and retraction.

[0040] Furthermore, the first clamping roller adjusting assembly 68 and the second clamping roller adjusting assembly 69 have the same structure, both including a first upper slider 101, a vertical lead screw 100, and a first lower slider 102. The vertical lead screw 100 is rotatably disposed within the guide head housing 62. The first upper slider 101 and the first lower slider 102 are slidably disposed on the vertical lead screw 100. The two ends of the upper clamping roller 66 are rotatably disposed within the first upper slider 101, and the two ends of the lower clamping roller 67 are rotatably disposed within the first lower slider 102. By rotating the vertical lead screw 100, the distance between the first upper slider 101 and the first lower slider 102 can be adjusted, thereby adjusting the distance between the upper clamping roller 66 and the lower clamping roller 67 to accommodate the clamping of the thin material.

[0041] Furthermore, continue to refer to Figures 1-3 , Figures 18-19 At the lower end of the TPU hot melt adhesive film 1, near the film smoothing component 4 on the base assembly 7, a film guide roller group 10 is provided. At the right end of the upper smoothing component 28, an end film guide component 9 is provided. The end film guide component 9 is located at the upper end of the TPU hot melt adhesive film 1. At the right end of the film guide roller group 10 on the base assembly 7, a winding roller group 8 is provided. The winding roller group 8 is used to wind up the TPU hot melt adhesive film 1.

[0042] The end-film guiding assembly 9 includes an upper fixed plate 81, a sliding seat 82, a roller support frame 83, a third lifting telescopic rod 84, and a guide pressure roller 85. The upper fixed plate 81 is fixedly connected to the right end of the upper smoothing assembly 28. The sliding seat 82 is slidably disposed at the lower end of the upper fixed plate 81 and is driven by a power drive assembly to slide along the upper fixed plate 81 (the specific power drive assembly can be a hydraulic cylinder, telescopic cylinder, telescopic motor, etc., which are common knowledge in the art and will not be described in detail here). The lower end of the sliding seat 82 is connected to the upper end of the third lifting telescopic rod 84, and the lower end of the third lifting telescopic rod 84 is connected to the upper end of the roller support frame 83. The guide roller 85 is rotatably mounted inside the roller support frame 83. When the TPU hot melt adhesive film 1 needs to be wound up, the guide roller 85 extends and presses the TPU hot melt adhesive film 1 against the surface of the take-up roller assembly 8. Then, the TPU hot melt adhesive film 1 is cut by a film cutting knife (not shown in the figure; the film cutting knife can be set to telescopic knife mode, located at the right end of the upper fixed plate 81. After the film guide head assembly 5 passes the right end of the upper fixed plate 81, the film cutting knife extends and cuts the TPU hot melt adhesive film 1). The guide roller 85 presses against the TPU hot melt adhesive film 1 and then drives the take-up roller assembly 8 to rotate, winding the TPU hot melt adhesive film 1 onto the take-up roller assembly 8.

[0043] Preferably, an upper cover plate 95 is provided on the outside of the support frame 29.

[0044] Preferably, the base assembly 7 includes a base plate 70, on which an extruder support frame 71, a support frame plate seat 72, a guide rail support seat 74, and a smoothing component support seat 73 are provided. The extruder support frame 71 is used to support the extruder assembly 2, the support frame plate seat 72 is used to support the first support frame plate 11 and the second support frame plate 12, the guide rail support seat 74 is used to support the guide rail assembly 6, and the smoothing component support seat 73 is used to support the lower smoothing component 27. A smoothing component connecting seat 75 is also provided on the guide rail support seat 74, and the smoothing component connecting seat 75 is used to support the upper smoothing component 28.

[0045] Preferably, the guide rail assembly 6 includes a first horizontal guide rail segment 76, a second horizontal guide rail segment 77, a first vertical guide rail segment 78, and a second vertical guide rail segment 79. The first horizontal guide rail segment 76 and the second horizontal guide rail segment 77 are parallel to each other and arranged horizontally. The first vertical guide rail segment 78 and the second vertical guide rail segment 79 are parallel to each other and arranged vertically. The first horizontal guide rail segment 76, the first vertical guide rail segment 78, the second horizontal guide rail segment 77, and the second vertical guide rail segment 79 are connected end to end to form an annular guide rail. The guide rail slider 80 is slidably disposed within the annular guide rail, and the guide rail slider 80 may be equipped with a drive motor to drive it to slide along the annular guide rail.

[0046] Preferably, the first sliding force assembly 45, the second sliding force assembly 46, the third sliding force assembly 47, the fourth sliding force assembly 48, the fifth sliding force assembly 58, the sixth sliding force assembly 59, the seventh sliding force assembly 60, the eighth sliding force assembly 61, and the ninth sliding force assembly all include a rotating lead screw and a slider. The lead screw is rotated by a motor or electric motor, which then drives the slider to slide on the lead screw.

[0047] Preferably, the inner sides of the guide rail support 74, the first support plate 11, and the second support plate 12 are provided with mounting grooves to accommodate the guide rail assembly 6. After the guide rail assembly 6 is installed inside the guide rail support 74, the first support plate 11, and the second support plate 12, the inner surface of the guide rail assembly 6 does not protrude from the inner surfaces of the guide rail support 74, the first support plate 11, and the second support plate 12. The inner surface of the vertical slider 88 does not protrude from the inner surfaces of the first support plate 11 and the second support plate 12, and the outer end faces of the intermediate circular plate 23 and the edge circular plate 24 are flush with the inner surfaces of the first support plate 11 and the second support plate 12.

[0048] Preferably, the vertical slider 88 can be made to slide by setting a slider drive component. The specific slider drive component can be a telescopic drive cylinder or a drive motor, or an elastic component such as a spring can be used as the slider drive component.

[0049] Preferably, the first smoothing roller 44, the second smoothing roller 56, and the third smoothing roller 57 can be cooling rollers with internal cooling channels. In this way, smoothing and cooling operations can be performed simultaneously, which can improve the forming effect of TPU hot melt adhesive film. The specific cooling channels are common knowledge in the art and will not be described in detail here.

[0050] Preferably, in order to achieve a better cooling effect, a cooling air outlet channel is also provided inside the upper cover plate 95, so that the cooling effect of the TPU hot melt adhesive film is better through the cooling air.

[0051] Preferably, in order to ensure the guiding effect of the film guide head assembly 5, the height of the second horizontal guide rail section 77 is the same as the height of the nozzle of the extruder assembly 2, and in order to ensure that the thin material extruded by the extruder assembly 2 is clamped in time, the leftmost end of the second horizontal guide rail section 77 is aligned with the end of the nozzle.

[0052] Preferably, when calendering thin material, a gap L is formed between the lower surface of the middle roller 19 of the upper extrusion roller group 13 and the upper surface of the middle roller 19 of the lower extrusion roller group 14, and a gap K is formed between the lower surface of the sub-moving roller 20 at the rightmost end of the second arc segment 93 in the upper extrusion roller group 13 and the upper surface of the sub-moving roller 20 at the rightmost end of the second arc segment 93 in the lower extrusion roller group 14. In this way, L>K, calendering can be carried out gradually when calendering thin material, resulting in a better forming effect of the formed TPU hot melt adhesive film.

[0053] Preferably, the length of the third roller frame 51 or the fourth roller frame 52 is denoted as H. When the first transverse sliding roller group 37 and the second transverse sliding roller group 38 are engaged, the gap between the inner surfaces of the two second lifting telescopic rods 50 arranged along the axial direction of the first clamping roller 42 is denoted as D. Then D≥H. When the first transverse sliding roller group 37 and the second transverse sliding roller group 38 are separated, the gap X formed between the first transverse sliding roller group 37 and the second transverse sliding roller group 38 is greater than or equal to the width of the first lifting telescopic rod 49. This facilitates the interlacing passage of the first smoothing roller group 31 and the second smoothing roller group 33.

[0054] To facilitate a clear understanding of the working principle of the production equipment for the novel TPU hot melt adhesive film of Embodiment 2 by those skilled in the art, the production equipment is described as follows: The extruder assembly 2, through the rotation of its extrusion motor driving the internal spiral blades, extrudes the added molten material from the flat nozzle at the end of the extruder assembly 2, creating a thin film. The film guide head assembly 5, guided by the guide rail assembly 6, is positioned at the end of the nozzle. After the thin film is extruded, the first clamping roller adjusting assembly 68 and the second clamping roller adjusting assembly 69 activate, causing the upper clamping roller... The gap between the upper clamping roller 66 and the lower clamping roller 67 increases. After the thin material enters the receiving cavity 65, the first clamping roller adjusting assembly 68 and the second clamping roller adjusting assembly 69 move in opposite directions, causing the upper clamping roller 66 and the lower clamping roller 67 to press the thin material. Then, the upper clamping roller 66 and the lower clamping roller 67 rotate at a certain angle, driving the thin material to continue entering the receiving cavity 65, resulting in a better clamping effect. Then, the rotation of the upper clamping roller 66 and the lower clamping roller 67 stops (specifically, the rotation of the upper clamping roller 66 and the lower clamping roller 67 can be adjusted, for example, by adjusting the first upper sliding roller). A rotary motor is installed inside the block and the first lower slider. Then, the guide rail slider 80 moves, driving the film guide head assembly 5 to slide to the right along the second horizontal guide rail section 77. When passing the film calendering roller group 3, the film guide head assembly 5 causes the two edge circular plates 24 to open. After the film guide head assembly 5 passes, the two edge circular plates 24 close together again. The roller pusher drives several sub-moving rollers 20 to enter the second slide groove 26 from the first slide groove 25. At the same time, the vertical slider 88 is driven by the slider drive to slide along the middle vertical groove 86. After passing through the middle through groove 89, the two... The vertical sliders 88 approach each other, and finally, through the two intermediate rollers 19 and the two sets of several sub-moving rollers 20 that enter the second groove 26, the thin film is calendered together. Since the intermediate rollers 19 are used for preliminary calendering first, and then the sub-moving rollers 20 that gradually approach each other are used for calendering again, the calendering effect is better. In addition, the size of the gap K can be adjusted by adjusting the degree of entry of the sub-moving rollers 20 into the second groove 26, so that the thickness of the formed TPU hot melt adhesive film can be better selected.The membrane guide head assembly 5 continues to move along the second horizontal guide rail section 77. Both the first lifting telescopic rod 49 and the second lifting telescopic rod 50 are in a retracted state. After the membrane guide head assembly 5 reaches the right end of the second smoothing roller group 33, the second lifting telescopic rod 50 of the second smoothing roller group 33 extends, causing the first clamping roller 42 and the second clamping roller 43 of the first horizontal sliding roller group 37 and the second horizontal sliding roller group 38 to adhere to the surface of the TPU hot melt adhesive film 1. Then, the tenth sliding force assembly and the eleventh sliding force assembly (the tenth and eleventh sliding force assemblies have the same structure as the first to ninth sliding force assemblies) within the first side vertical beam 35 and the second side vertical beam 36... (Details omitted here) The drive is synchronized with the TPU hot melt adhesive film 1. Then, the first sliding force component 45 and the second moving power component 46 drive the first smoothing roller 44 to move from the center to both sides, thereby smoothing the TPU hot melt adhesive film 1. When the second smoothing roller group 33 is performing the smoothing operation, the height of the first smoothing roller group 31 is higher than that of the second smoothing roller group 33. Thus, the first smoothing roller group 31 passes through the second smoothing roller group 33 from the top. After the first smoothing roller 44 completes the smoothing operation, the first lifting telescopic rod 49 of the first smoothing roller group 31 extends, so that the third clamping roller 54 and the fourth clamping roller 55 abut against the TPU hot melt adhesive film 1. At the same time, the second lifting telescopic rod 50 retracts. The ninth sliding force component within the second guide slider group 32 actuates, causing the lower slider 99 to slide laterally downwards and outwards, opening the first and second transverse sliding roller groups 37 and 38. Simultaneously, the tenth and eleventh sliding force components drive the second smoothing roller group 33 to slide in the opposite direction. The twelfth sliding force component within the middle vertical beam 34 (the twelfth sliding force component has the same structure as the first to ninth sliding force components, so it will not be described again here) drives the first smoothing roller group 31 to slide synchronously with the TPU hot melt adhesive film 1. Then, the second smoothing roller 56 and the third smoothing roller 57 move from the middle to both ends, achieving the horizontal smoothing of the TPU hot melt adhesive film 1. To smooth the surface, the second smoothing roller group 33 passes through the first smoothing roller group 31 from the top. After passing through, the ninth sliding force component moves in the opposite direction, causing the first transverse sliding roller group 37 and the second transverse sliding roller group 38 to engage with each other again, causing the second lifting telescopic rod 50 to extend and the first lifting telescopic rod 49 to retract. In this way, through the reciprocating motion of the first smoothing roller group 31 and the second smoothing roller group 33, the entire TPU hot melt adhesive film 1 is smoothed laterally. In addition, since the TPU hot melt adhesive film 1 is also clamped by the first clamping roller 42, the second clamping roller 43, the third clamping roller 54 and the fourth clamping roller 55 during the transverse smoothing, the smoothing effect is better and the risk of wrinkles is avoided during the smoothing process.After the film guide assembly 5 continues to slide laterally, it stops sliding after passing the end film guide assembly 9. The guide roller 85 of the end film guide assembly 9 extends. After the guide roller 85 presses the TPU hot melt adhesive film 1 against the take-up roller group 8, the film cutter cuts the TPU hot melt adhesive film 1. Alternatively, the distance between the upper clamping roller 66 and the lower clamping roller 67 of the film guide assembly 5 increases, causing the TPU hot melt adhesive film 1 to separate from the film guide assembly 5. Then, the take-up roller group 8 is driven to rotate to perform the take-up action of the TPU hot melt adhesive film 1. After the first turn of the TPU hot melt adhesive film 1 is taken up, the guide roller 85 retracts. Finally, the action of the take-up roller group 8 drives the subsequent action of the TPU hot melt adhesive film 1. The film guide assembly 5 can continue to run to the vicinity of the extruder assembly 2 by the guide rail assembly 6, or be located at the first vertical guide rail section 78, the first horizontal guide rail section 76, or the second vertical guide rail section 79. Due to the compression of the intermediate roller 19 and several sub-moving rollers 20 of the film calendering roller group 3, and the alternating compression of the first smoothing roller group 31 and the second smoothing roller group 33, the TPU hot melt adhesive film 1 will not immediately retract after sudden breakage. After the TPU hot melt adhesive film 1 breaks, the end film guide component 9 can be driven to move to the corresponding breakage point of the TPU hot melt adhesive film 1. Multiple end film guide components 9 can also be set. In addition, the end film guide component 9 can rotate 360° relative to the guide rail slider 80, thereby changing the direction of clamping the TPU hot melt adhesive film 1. For example, the TPU hot melt adhesive film 1 can be clamped from the front to guide its sliding, or it can cooperate with the take-up roller group 8 to perform the take-up operation as the end of the tensioned TPU hot melt adhesive film 1.

[0055] 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 TPU hot melt adhesive film production equipment using a TPU mesh fabric production process, wherein the TPU mesh fabric production process includes the following steps: I. TPU hot melt adhesive film production: a. Preparation of molten material: TPU particles, tackifying resin, crosslinking agent and UV stabilizer are added to a high-speed mixer for premixing to obtain a melt; the melt is then added to the extruder assembly (2); b. Guiding material discharge: The thin material extruded by the extruder assembly (2) is held by the film guide head assembly (5), which is guided by the guide rail assembly (6); c. Calendering to form a film: After the film guide head assembly (5) passes through the film calendering roller group (3), the film calendering roller group (3) calenders the thin material to form a TPU hot melt adhesive film (1) of a predetermined thickness; d. Smoothing and trimming the membrane surface: After the membrane guide head assembly (5) passes through the membrane smoothing assembly (4), the membrane smoothing assembly (4) performs surface smoothing and trimming operations on the TPU hot melt adhesive film (1); e. Film winding: The TPU hot melt adhesive film (1) is guided to move by the film guide head assembly (5), and the TPU hot melt adhesive film (1) is guided by the end film guide assembly (9) to be wound onto the take-up roller assembly (8); II. Composite of mesh fabric: The mesh fabric is formed by hot pressing the mesh fabric with the TPU hot melt adhesive film (1) formed in step one; Its features are: The production equipment includes: a base assembly (7), on which the extruder assembly (2), the film calendering roller group (3) and the film smoothing assembly (4) are sequentially arranged along the length direction of the base assembly (7), and on which the guide rail assembly (6) is arranged on both sides of the film calendering roller group (3) and the film smoothing assembly (4) along the width direction of the base assembly (7), and the film guide head assembly (5) guides the thin material to pass through the film calendering roller group (3) and the film smoothing assembly (4) sequentially. After the thin material is calendered by the film calendering roller group (3), a TPU hot melt adhesive film (1) is formed. The film calendering roller group (3) includes a first support frame plate (11), a second support frame plate (12) and an upper extruder located between the first support frame plate (11) and the second support frame plate (12). The upper extrusion roller group (13) and the lower extrusion roller group (14) are provided with a first rotating plate group (15) and a second rotating plate group (16) on both sides of the upper extrusion roller group (13), and a third rotating plate group (17) and a fourth rotating plate group (18) on both sides of the lower extrusion roller group (14). The upper extrusion roller group (13) and the lower extrusion roller group (14) each include an intermediate roller (19) and several sub-moving rollers (20). When calendering the thin material, the several sub-moving rollers (20) can be guided by the first rotating plate group (15), the second rotating plate group (16), the third rotating plate group (17) and the fourth rotating plate group (18) to gradually approach each other in a direction away from the extruder assembly (2) to gradually calender the thin material and form the TPU hot melt adhesive film (1).

2. The TPU hot melt adhesive film production equipment according to claim 1, characterized in that: The film smoothing assembly (4) includes an upper smoothing assembly (28) and a lower smoothing assembly (27). Both the upper smoothing assembly (28) and the lower smoothing assembly (27) include a first smoothing roller group (31) and a second smoothing roller group (33) that are slidably disposed along the length direction of the base assembly (7). The first smoothing roller group (31) of the upper smoothing assembly (28) and the first smoothing roller group (31) of the lower smoothing assembly (27) can abut against each other and slide along the same speed as the TPU hot melt adhesive film (1). The TPU hot melt adhesive film (1) is smoothed in the width direction. The second smoothing roller group (33) of the upper smoothing component (28) and the second smoothing roller group (33) of the lower smoothing component (27) can abut against each other. While sliding at the same speed as the TPU hot melt adhesive film (1), the TPU hot melt adhesive film (1) can be smoothed in the width direction. The first smoothing roller group (31) and the second smoothing roller group (33) can cross each other.

3. The TPU hot melt adhesive film production equipment according to claim 1, characterized in that: The first rotating plate group (15) is rotatably disposed on the upper inner side of the first support frame plate (11), the third rotating plate group (17) is rotatably disposed on the lower inner side of the first support frame plate (11), the second rotating plate group (16) is rotatably disposed on the upper inner side of the second support frame plate (12), and the fourth rotating plate group (18) is rotatably disposed on the lower inner side of the second support frame plate (12). Each of the first rotating plate group (15), the second rotating plate group (16), the third rotating plate group (17), and the fourth rotating plate group (18) includes a middle circular plate (23) and an edge circular plate (24). A first groove (25) is formed in the middle circular plate (23), and a groove (24) is formed in the edge circular plate (25). 24) A second chute (26) is provided inside. The first chute (25) and the second chute (26) are connected. The two ends of the plurality of sub-moving rollers (20) are connected by the first linkage plate group (21) and the second linkage plate group (22) respectively. When the calendering operation is not performed, the plurality of sub-moving rollers (20) are housed in the first chute (25). When the calendering operation is performed, the plurality of sub-moving rollers (20) are driven by the roller pusher to slide along the first chute (25) and slide into the second chute (26) of the edge circular plate (24). The plurality of sub-moving rollers (20) form an arrangement structure in the second chute (26) that gradually approaches each other in a direction away from the extruder assembly (2).

4. The TPU hot melt adhesive film production equipment according to claim 3, characterized in that: The first slide (25) includes a first arc segment (90) and a first vertical segment (91), and the second slide (26) includes a second vertical segment (92) and a second arc segment (93). The first vertical segment (91) and the second vertical segment (92) are connected to each other to form a vertical transition segment connecting the first arc segment (90) and the second arc segment (93).

5. A TPU hot melt adhesive film production equipment according to claim 3 or 4, characterized in that: Both the first support plate (11) and the second support plate (12) have a central vertical groove (86). Two vertical sliders (88) are slidably arranged in the central vertical groove (86). The two ends of the central roller (19) of the upper extrusion roller group (13) are respectively rotatably arranged in the upper vertical slider (88) of the two vertical sliders (88). The two ends of the central roller (19) of the lower extrusion roller group (14) are respectively rotatably arranged in the lower vertical slider (88) of the two vertical sliders (88). A central through groove (89) is also provided in the central circular plate (23). The central rollers (19) of the upper extrusion roller group (13) and the lower extrusion roller group (14) can approach each other through the central through groove (89).

6. The TPU hot melt adhesive film production equipment according to claim 2, characterized in that: Both the upper smoothing assembly (28) and the lower smoothing assembly (27) include a support frame (29). The support frame (29) includes a central vertical beam (34), a first side vertical beam (35), a second side vertical beam (36), and several connecting crossbeams (96). The central vertical beam (34), the first side vertical beam (35), and the second side vertical beam (36) are parallel to each other. The central vertical beam (34) is located between the first side vertical beam (35) and the second side vertical beam (36). The central vertical beam (34), the first side vertical beam (35), and the second side vertical beam (36) are connected by several connecting crossbeams (96). The first smoothing roller assembly (31) is connected by a first lifting telescopic rod (49). The second smoothing roller group (33) is slidably set on the middle vertical beam (34). The second smoothing roller group (33) is slidably set on the first side vertical beam (35) and the second side vertical beam (36) through the second lifting telescopic rod (50). The second smoothing roller group (33) includes a first transverse sliding roller group (37) and a second transverse sliding roller group (38). When the second smoothing roller group (33) smooths the TPU hot melt adhesive film (1), the first transverse sliding roller group (37) and the second transverse sliding roller group (38) are connected to each other. When the first smoothing roller group (31) and the second smoothing roller group (33) cross each other, the first transverse sliding roller group (37) and the second transverse sliding roller group (38) are separated from each other.

7. The TPU hot melt adhesive film production equipment according to claim 6, characterized in that: The first transverse sliding roller group (37) and the second transverse sliding roller group (38) both include a first roller frame (39), a second roller frame (40) and a connecting beam (41). The connecting beam (41) connects the first roller frame (39) and the second roller frame (40). A first clamping roller (42) is rotatably arranged in the first roller frame (39), and a second clamping roller (43) is rotatably arranged in the second roller frame (40). A first smoothing roller (44) is slidably arranged between the first roller frame (39) and the second roller frame (40). The two ends of the first smoothing roller (44) are respectively arranged on the inner side of the first roller frame (39) and the second roller frame (40) through a first sliding force assembly (45) and a second sliding force assembly (46). The rotation axes of the first clamping roller (42) and the second clamping roller (43) are parallel, and the rotation axis of the first smoothing roller (44) is perpendicular to the rotation axes of the first clamping roller (42) and the second clamping roller (43).

8. The TPU hot melt adhesive film production equipment according to claim 2, characterized in that: The first smoothing roller assembly (31) includes a third roller frame (51) and a fourth roller frame (52), which are fixedly connected by a connecting beam (53). A third clamping roller (54) is rotatably arranged inside the third roller frame (51), and a fourth clamping roller (55) is rotatably arranged inside the fourth roller frame (52). A second smoothing roller (56) and a third smoothing roller (57) are slidably arranged parallel to each other between the third roller frame (51) and the fourth roller frame (52). The connecting beam (53) is located in the middle of the third roller frame (51) and the fourth roller frame (52). The second smoothing roller (56) and the third smoothing roller (57) are connected by the connecting beam (53). Separated, the two ends of the second smoothing roller (56) are slidably disposed on the inner side of the fourth roller frame (52) and the third roller frame (51) respectively through the fifth sliding force assembly (58) and the sixth sliding force assembly (59). The two ends of the third smoothing roller (57) are slidably disposed on the inner side of the fourth roller frame (52) and the third roller frame (51) respectively through the seventh sliding force assembly (60) and the eighth sliding force assembly (61). The rotation axis of the third clamping roller (54) is parallel to the rotation axis of the fourth clamping roller (55). The rotation axes of the second smoothing roller (56) and the third smoothing roller (57) are perpendicular to the rotation axes of the third clamping roller (54) and the fourth clamping roller (55).

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