A waterproof and breathable membrane processing equipment with cooling mechanism

Abstract

The application discloses a waterproof and breathable film processing equipment with a cooling mechanism and relates to the technical field of high polymer materials, which comprises a film forming chamber frame body and a cooling chamber frame body. An extruder shell and a calender film machine shell are arranged in the film forming chamber frame body, and a cooling machine shell is arranged in the cooling chamber frame body. The extruder shell, the calender film machine shell and the cooling machine shell are respectively provided with an extruding mechanism, a calendering mechanism and a cooling mechanism. The extruding mechanism, the calendering mechanism and the cooling mechanism are matched, so that the space utilization is improved by using the staggered structure, the applicability is improved by using the segmented structure, the adjustment accuracy is improved by using the linear adjustment structure, and the film structure is protected by using the supercritical carbon dioxide cooling mechanism, and finally, the problems of large equipment volume, poor adaptability, low adjustment accuracy and damaged film structure are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of polymer materials, in particular to waterproof and breathable membrane processing equipment with a cooling mechanism. Background Art

[0002] Waterproof and breathable membrane is a high-performance polymer material that is both waterproof and breathable. It is widely used in construction, outdoor equipment, medical, electronics, automotive and other fields. The processing of breathable membranes varies according to the material type (such as TPU, EPTFE, PE, etc.) and specific application requirements. There are usually some differences, but the basic process starts with raw material preparation, followed by extrusion and calendering into a film, followed by biaxial stretching to form a microporous structure, and finally sintering to finalize the shape. Some processes will also perform post-processing such as water repellency and composite lamination after sintering and finalizing the shape, but the general principles are similar. In such a production process, the process with the highest technical difficulty and the greatest impact on the quality of the finished product is the extrusion calendering process. The equipment required for the extrusion calendering process includes extrusion equipment, calendering equipment and cooling equipment. The extrusion equipment is responsible for melting the raw materials and extruding them in liquid form, the calendering equipment is responsible for shaping the liquid raw materials according to the requirements, and the cooling equipment is responsible for cooling and solidifying the liquid raw materials.

[0003] Existing extrusion equipment is basically a linear horizontal needle cylinder extruder. This type of extruder has a simple structure, reliable operation and simple maintenance. However, its feed section, melting section and extrusion section are all coaxially connected together front and back, resulting in a slender overall equipment and low space utilization. In addition, the feed section, melting section and extrusion section of the device share a set of transmission components and conveying components, resulting in the inability to freely adjust the feed amount in each section. When faced with raw materials with different melting temperatures, the raw materials may be extruded due to incomplete melting or melted too quickly and the extrusion speed is insufficient, resulting in overheating of the raw materials.

[0004] Existing calendering equipment controls film thickness primarily through machining the extrusion die's extrusion port and fine-tuning the die's adjusting bolts. However, the accuracy of the adjusting bolts depends on the thread pitch of the bolts, which results in very limited film thickness adjustment capabilities.

[0005] The existing cooling structure is usually directly integrated with the calendering equipment. A cooling roller with an internal water channel is set in the calendering equipment, and cooling water is then passed into the cooling roller to cool and solidify the raw material during the calendering process to achieve the purpose of cooling and forming. However, the thermal conductivity efficiency of the cooling water varies greatly, resulting in very unsatisfactory accuracy in actual film temperature control, which is obviously insufficient for polymer materials with high crystallization temperature requirements. Moreover, only one side of the film-forming raw material actually contacts the cooling surface, and the other side needs to rely on its own thermal conductivity to release heat, which will cause different shrinkage rates on the two sides, resulting in wrinkles or deformation, which is obviously insufficient for polymer materials with high surface quality requirements. In addition, the existing cooling equipment usually directly immerses the film-forming material in cooling water to quickly reduce the temperature of the raw material, causing the raw material to crystallize and shrink to form a microporous structure. This structure is also the key to waterproof and breathable properties, but the cooling water will cause the microporous structure to be pulled and collapsed due to its surface tension, and the raw material may absorb moisture, causing the material composition to be changed, resulting in changes in the physical or chemical properties of the material, and ultimately affecting the product quality.

[0006] Therefore, the present invention improves the existing equipment in view of the above problems. Summary of the Invention

[0007] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a waterproof breathable membrane processing equipment with a cooling mechanism.

[0008] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a waterproof and breathable film processing equipment with a cooling mechanism, comprising a film forming chamber frame and a cooling chamber frame, the film forming chamber frame and the cooling chamber frame are both welded by aluminum alloy strips, the front end surface of the film forming chamber frame is hinged with a double door, the front end side of the cooling chamber frame is hinged with a single door, the other side of the cooling chamber frame is fixedly installed with a controller room, the film forming chamber frame, the cooling chamber frame, the double door and the single door are all sealed by installing high-transmittance glass plates to form a closed environment A ventilation top plate is fixedly installed on the top surface of the film forming chamber frame, an extruder casing and a calendering film machine casing are mounted inside the film forming chamber frame, a cooler casing is mounted inside the cooling chamber frame, and an extrusion mechanism, a calendering mechanism and a cooling mechanism are respectively mounted in the extruder casing, the calendering film machine casing and the cooler casing. The extrusion mechanism includes a stirring assembly, a feeding assembly, a melting assembly and an extrusion assembly. The calendering mechanism includes a forming assembly, a transmission assembly and a shaping assembly. The cooling mechanism includes a winding assembly, a critical assembly and a cooling assembly.

[0009] Preferably, the stirring assembly includes a mixing tank, which is funnel-shaped and has a round tank top fixed on the top surface via a flange ring. A feed port is obliquely opened in front of the outer side of the round tank top. A thread is provided on the outer side of the feed port, and a feed cover is fixed to the feed port via a threaded engagement. A stirring motor is fixed on the top of the outer side of the round tank top, and the lower rotating end of the stirring motor passes through the round tank top and is fixed to a stirring frame.

[0010] Preferably, the feeding assembly includes a first feeding casing, which passes through the extruder casing above the middle of the outer side surface and is vertically connected to the bottom surface of the mixing tank through a flange ring. The front and rear ends of the first feeding casing are installed and fixed on the internal top surface of the extruder casing. The first feeding casing is coaxially connected to the first spiral feeding column. The rear end of the first spiral feeding column is connected to the first feeding motor through a belt. The first feeding motor is installed and fixed on the internal top surface of the extruder casing.

[0011] Preferably, the melting component includes a first feeding pipe, the upper end of the first feeding pipe is connected to the lower right corner of the front end of the outer side surface of the first feeding casing through a flange ring, the lower end of the first feeding pipe is provided with a heating casing, and the second feeding casing is nested inside the heating casing, the lower end of the first feeding pipe passes through the top surface of the heating casing and is connected to the inside of the second feeding casing, a plurality of heating wires are wound in the interlayer between the second feeding casing and the heating casing, a second spiral feeding column is coaxially connected to the inside of the second feeding casing, the lower end of the second spiral feeding column is fixedly connected to the second feeding motor, the second feeding motor is installed and fixed on the bottom surface of the heating casing, the heating casing is installed and fixed on the inner bottom surface of the extruder shell, the rear portion of the lower end of the outer side surface of the second feeding casing horizontally passes through the heating casing and is connected to the second feeding pipe.

[0012] Preferably, the extrusion assembly includes a third feed pipe, the front end of the third feed pipe is connected to the second feed pipe through a flange ring, and the rear end of the third feed pipe is connected to the extruder casing, the extruder casing is horizontally installed and fixed on the bottom surface of the inner part of the extruder casing, and the extrusion spiral column is coaxially connected to the inner part of the extrusion casing. The right end of the extrusion spiral column is connected to the extrusion motor through a belt, and the extrusion motor is installed and fixed on the mounting frame plate, and the mounting frame plate is installed and fixed in the middle of the rear end surface of the inner part of the extruder casing. A discharge port is provided at the left end of the extruder casing, and the discharge port passes through the left end surface of the extruder casing.

[0013] Preferably, the molding assembly includes an extrusion tube, the right end of the extrusion tube is connected to the left end of the extruder housing through a flange ring, the left end of the extrusion tube passes through the right end face of the calendering film machine housing and is connected to the mold mounting frame, the left end face of the mold mounting frame is cooperated with and fixed with an extrusion mold, the extrusion mold is connected to the extrusion tube, a flow channel is provided inside the extrusion mold and an extrusion port is provided in the middle of the bottom surface, a conveyor belt is provided at a distance below the extrusion mold, the left and right ends of the conveyor belt are both mounted on the transmission roller, and the front and rear ends of the transmission roller are rotatably connected to the bottom surface inside the calendering film machine housing.

[0014] The axle up and down groove at two ends embeds respectively in two guide rails up and down of being made up of the groove on the attachment piece, and the tooth on the attachment piece is meshed with tooth on upper sprocket wheel, the lower sprocket.

[0015] Preferably, the shaping component includes a stretching roller, the front end of the stretching roller is rotatably connected to the front end inside the calendering film machine shell, and the rear end of the stretching roller is rotatably connected to the rotating frame plate, and the upper and lower ends of the rotating frame plate are both installed and fixed on the upper and lower end surfaces inside the calendering film machine shell. A polymer film is wound around the stretching roller, and the polymer film is extruded from the extrusion die and falls downward on the top surface of the conveyor belt and winds around the outer side of the stretching roller. The upper end of the polymer film passes through the strip opening opened in conjunction with the left end surface of the calendering film machine shell and extends outward.

[0016] Preferably, the winding assembly includes a steering roller, the front and rear ends of the steering roller are rotatably connected to the upper end on the right side of the cooling machine shell, the right side of the outer side of the steering roller abuts against the polymer film, the lower end of the polymer film is wound on the outer side of the winding roller, and the front and rear ends of the winding roller are rotatably connected to the bottom surface inside the cooling machine shell.

[0017] Preferably, the critical component includes a horizontal mounting frame, which is horizontally mounted and fixed in the middle position of the cooling machine shell. The left mounting frame on the top surface of the horizontal mounting frame is provided with a temperature regulating tank. A tank cover is fixed on the top surface of the temperature regulating tank. A liquid inlet and a liquid outlet are horizontally and symmetrically connected at the rear of the lower end of the outer side of the temperature regulating tank. A pressurized pipe is vertically connected to the rear end of the outer side of the tank cover. A pressure relief valve is vertically connected to the front end of the outer side of the tank cover. A pressure gauge is fixed on the pressure relief valve. A liquid carbon dioxide tank is provided in front of the temperature regulating tank. The outer side of the liquid carbon dioxide tank The rear end of the surface is connected to a carbon dioxide inlet, the rear end of the carbon dioxide inlet passes through the temperature regulating tank and is connected to the carbon dioxide supercritical tank, a stirring rotor is placed in the middle of the bottom surface of the interior of the carbon dioxide supercritical tank, and a magnetic field pad is provided on the bottom surface of the outer side of the carbon dioxide supercritical tank, and the magnetic field pad is installed and fixed on the bottom surface of the outer side of the temperature regulating tank; the temperature regulating tank is sealed on the outer wall of the straight section of the carbon dioxide supercritical tank, and the tank cover sealing cover is provided on the top of the carbon dioxide supercritical tank, and the interior of the tank cover is not connected with the interior of the temperature regulating tank; the inner ends of the pressurizing pipe and the pressure relief valve are both connected with the interior of the carbon dioxide supercritical tank.

[0018] Preferably, the cooling assembly includes an air nozzle, which is installed and fixed on the left front side of the outer side of the carbon dioxide supercritical tank. A honeycomb diverter is provided on the outer side of the air nozzle, one end of the honeycomb diverter is fixedly connected to the outer side of the carbon dioxide supercritical tank, and the other end of the honeycomb diverter passes through the temperature regulating tank and is fixedly connected to a cooling box. A recovery pipe is connected to the middle of the rear end face of the cooling box. The upper and lower end faces of the cooling box are provided with passages, and a sealing curtain is installed on the passage. A polymer film is passed through the sealing curtain. A laser thermometer is installed and fixed in the middle of the front end face of the cooling box, and the laser thermometer is aimed at the polymer film inside the cooling box.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The present invention separates the three working stages of the extrusion equipment by providing a first feeder housing, a second feeder housing and an extruder housing, and then independently configures supporting transmission components and conveying components, so that feeding, melting and extrusion can all operate independently, thereby improving the accuracy and stability of the raw material melting temperature. Furthermore, the three-dimensional staggered arrangement improves space utilization, and realizes the ability of the device to control the raw material to freely select the residence time in each stage according to its own characteristics and the ability of the device to be set within a smaller control range; through the clamping and pulling of the transmission component and multiple stretching rollers, the film thickness is effectively and gradually changed, and the stretching deformation is a linear deformation, which enables the film thickness to be very finely controlled, improves the adjustment accuracy of the device on the film thickness, and realizes the ability to more accurately control the film thickness;

[0021] The present invention uses a temperature regulating tank and a pressurizing pipe to keep the temperature in the carbon dioxide supercritical tank within the range of 35-50°C and the air pressure of 8-15MPa, so that the introduced liquid carbon dioxide is in a supercritical state. The carbon dioxide at this time has a special state of low viscosity, high diffusivity and no surface tension. The carbon dioxide in this state can quickly cool the film and can effectively avoid the problems of wrinkle deformation and microporous structure collapse during film cooling, thereby improving the quality of the finished product. The temperature of the supercritical carbon dioxide can be linearly adjusted by adjusting the air pressure or temperature, thereby improving the adjustment accuracy, realizing the ability of the device to quickly cool the film without damaging the film and the ability to adjust the cooling temperature with high precision. Finally, the problems of the existing equipment being overall slender, low space utilization, inability to freely adjust the feed amount in each segment, very limited actual film thickness adjustment capability, very unsatisfactory actual film temperature control accuracy and damage to the film structure are solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0023] Figure 1 This is a schematic three-dimensional diagram of the overall appearance of the device of the present invention;

[0024] Figure 2 Schematic diagram of the internal structure distribution of the device of the present invention;

[0025] Figure 3 It is a three-dimensional schematic diagram of the appearance of the processing mechanism of the present invention;

[0026] Figure 4 It is a front perspective schematic diagram of the internal distribution of the processing mechanism of the present invention;

[0027] Figure 5 It is a three-dimensional schematic diagram of the internal distribution of the processing mechanism of the present invention;

[0028] Figure 6 This is a three-dimensional schematic diagram of the overall appearance of the extrusion mechanism of the present invention;

[0029] Figure 7 The left perspective diagram of the internal distribution of the extrusion mechanism of the present invention;

[0030] Figure 8 The right perspective diagram of the internal distribution of the extrusion mechanism of the present invention;

[0031] Figure 9 It is a partially cutaway perspective diagram of the interior of the extrusion mechanism of the present invention;

[0032] Figure 10 It is a three-dimensional schematic diagram of the overall appearance of the calendering mechanism of the present invention;

[0033] Figure 11 It is a front perspective schematic diagram of the internal distribution of the calendering mechanism of the present invention;

[0034] Figure 12 It is a three-dimensional schematic diagram of the internal distribution of the calendering mechanism of the present invention;

[0035] Figure 13 For the present invention Figure 12 A magnified three-dimensional diagram of part A in the middle;

[0036] Figure 14 This is a schematic three-dimensional diagram of the overall appearance of the cooling mechanism of the present invention;

[0037] Figure 15 This is a front perspective diagram of the internal distribution of the cooling mechanism of the present invention;

[0038] Figure 16 It is a partial cross-sectional schematic diagram of the interior of the cooling mechanism of the present invention;

[0039] Figure 17 It is a schematic diagram of a left partial cross-sectional view of the interior of the cooling mechanism of the present invention.

[0040] Serial numbers in the figure: 1. Film forming chamber frame; 2. Cooling chamber frame; 3. Double door; 4. Single door; 5. Controller room; 6. High-transmittance glass plate; 7. Ventilation top plate; 8. Extruder housing; 9. Calendering film machine housing; 10. Cooling machine housing; 11. Mixing tank; 12. Round tank top; 13. Feed cover; 14. Stirring motor; 15. Stirring frame; 16. First feeder housing; 17. First spiral feed column; 18. First feed motor; 1 9. First feed pipe; 20. Heating housing; 21. Second feed housing; 22. Heating wire; 23. Second spiral feed column; 24. Second feed motor; 25. Second feed pipe; 26. Third feed pipe; 27. Extrusion housing; 28. Extrusion spiral column; 29. ​​Extrusion motor; 30. Mounting plate; 31. Extrusion tube; 32. Mold mounting frame; 33. Extrusion mold; 34. Conveyor belt; 35. Drive roller; 36. Drive motor ; 37, first clockwise toothed belt pulley; 38, lower transmission gear; 39, upper transmission gear; 40, first counter-rotating toothed belt pulley; 41, second clockwise toothed belt pulley; 42, third clockwise toothed belt pulley; 43, fourth clockwise toothed belt pulley; 44, fifth clockwise toothed belt pulley; 45, second counter-rotating toothed belt pulley; 46, third counter-rotating toothed belt pulley; 47, fourth counter-rotating toothed belt pulley; 48, stretching roller; 49, rotating frame plate; 50, polymer film; 51, steering roller; 5 2. Winding roller; 53. Horizontal mounting frame; 54. Temperature regulating tank; 55. Tank cover; 56. Liquid inlet; 57. Liquid outlet; 58. Pressurizing pipe; 59. Pressure relief valve; 60. Pressure gauge; 61. Liquid carbon dioxide tank; 62. Carbon dioxide inlet; 63. Carbon dioxide supercritical tank; 64. Stirring rotor; 65. Magnetic field pad; 66. Air jet nozzle; 67. Honeycomb diverter; 68. Cooling box; 69. Sealing curtain; 70. Laser temperature sensor. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0042] Example 1: See Figures 1 to 17, a waterproof and breathable film processing equipment with a cooling mechanism, including a film forming chamber frame 1 and a cooling chamber frame 2, the film forming chamber frame 1 and the cooling chamber frame 2 are both welded by aluminum alloy strips, the front end surface of the film forming chamber frame 1 is hinged with a double door 3, the front end side of the cooling chamber frame 2 is hinged with a single door 4, and the other side of the cooling chamber frame 2 is installed and fixed with a controller room 5, the film forming chamber frame 1, the cooling chamber frame 2, the double door 3 and the single door 4 are all installed with a high-transmittance glass plate 6 to form a closed environment, and a ventilation top plate 7 is installed and fixed on the top surface of the film forming chamber frame 1, and the sealing structure of the film forming chamber frame 1 and the cooling chamber frame 2 and the ventilation top plate 7 can provide a clean environment for the internal equipment in cooperation with the fresh air equipment, through the controller Chamber 5 can conveniently adjust the entire device, thereby improving the quality of the finished product and the convenience of operation of the device; the extruder housing 8 and the calendering film machine housing 9 are set inside the film forming chamber frame 1, and the cooler housing 10 is set inside the cooling chamber frame 2. The extruder housing 8, the calendering film machine housing 9 and the cooler housing 10 are respectively provided with an extrusion mechanism, a calendering mechanism and a cooling mechanism. The extrusion mechanism includes a stirring component, a feeding component, a melting component and an extrusion component. The calendering mechanism includes a forming component, a transmission component and a shaping component. The cooling mechanism includes a winding component, a critical component and a cooling component. The modular design allows the device to be freely matched with other equipment to achieve more complex process flows, meet more needs, and improve the actual application range of the device.

[0043] In the present invention, in order to solve the problems of overall slenderness of the equipment, low space utilization and inability to freely adjust the feed amount in each section, the following technical solutions are adopted: the stirring assembly includes a mixing tank 11, the mixing tank 11 is funnel-shaped and a round tank top 12 is fixed to the top surface through a flange ring, a feed port is opened obliquely in front of the outer surface of the round tank top 12, a thread is provided on the outer side of the feed port, and a feed cover 13 is fixed to the feed port through the thread, a stirring motor 14 is fixed to the top of the outer side of the round tank top 12, the lower rotating end of the stirring motor 14 passes through the round tank top 12 and is fixed to a stirring frame 15, and the feed cover 13 and the stirring frame 15 that can be quickly opened and closed facilitate the rapid addition and mixing of raw materials in the device, thereby improving practicality; the feeding assembly includes a first feeding casing 16. The upper middle portion of the outer side surface of the first feeding casing 16 passes through the extruder casing 8 and is vertically connected to the bottom surface of the mixing tank 11 through a flange ring. The front and rear ends of the first feeding casing 16 are fixed to the inner top surface of the extruder casing 8. The first feeding casing 16 is internally coaxially connected to a first spiral feeding column 17. The rear end of the first spiral feeding column 17 is connected to a first feeding motor 18 through a belt. The first feeding motor 18 is installed and fixed to the inner top surface of the extruder casing 8. The raw material supply is freely controllable through an independent transmission system, thereby improving practicality. The melting component includes a first feeding pipe 19. The upper end of the first feeding pipe 19 is connected to the lower right corner of the front end of the outer side surface of the first feeding casing 16 through a flange ring. The lower end of the first feeding pipe 19 is provided with a heating casing 20. The inside of the heating casing 20 A second feeding casing 21 is nested, the lower end of the first feeding pipe 19 passes through the top surface of the heating casing 20 and is connected to the inside of the second feeding casing 21, and a plurality of heating wires 22 are wound in the interlayer between the second feeding casing 21 and the heating casing 20. A second spiral feeding column 23 is coaxially connected to the inside of the second feeding casing 21, and a second feeding motor 24 is fixed to the lower end of the second spiral feeding column 23. The second feeding motor 24 is installed and fixed on the bottom surface of the heating casing 20, and the heating casing 20 is installed and fixed on the bottom surface of the extruder shell 8. The rear end of the lower end of the outer side surface of the second feeding casing 21 passes through the heating casing 20 horizontally and is connected to the second feeding pipe 25. Through the independent transmission system and the heating wire 22, the device can freely select the melting time of the raw materials to match the materials with different melting points. Raw materials, avoid repeated adjustment of heating power, and improve heating stability; the extrusion assembly includes a third feeding pipe 26, the front end of the third feeding pipe 26 is connected to the second feeding pipe 25 through a flange ring, and the rear end of the third feeding pipe 26 is connected to the extruder casing 27, the extruder casing 27 is horizontally installed and fixed on the bottom surface of the inner part of the extruder casing 8, and the extrusion spiral column 28 is coaxially connected to the extrusion casing 27. The right end of the extrusion spiral column 28 is connected to the extrusion motor 29 through a belt. The extrusion motor 29 is installed and fixed on the mounting frame 30, and the mounting frame 30 is installed and fixed in the middle of the rear end surface of the extruder casing 8. A discharge port is provided at the left end of the extruder casing 27, and the discharge port passes through the left end surface of the extruder casing 8. The extrusion speed is freely controllable through an independent transmission system, thereby improving practicality;The three-dimensional staggered arrangement of the first feeder housing 16, the second feeder housing 21 and the extruder housing 27 improves space utilization.

[0044] In the present invention, in order to solve the problem that the actual film thickness adjustment ability is very limited, the following technical solution is adopted: the molding component includes an extrusion tube 31, the right end of the extrusion tube 31 is connected to the left end of the extruder housing 27 through a flange ring, the left end of the extrusion tube 31 passes through the right end surface of the calendering film machine housing 9 and is connected to the mold mounting frame 32, the left end surface of the mold mounting frame 32 is matched with the installation and fixation of the extrusion mold 33, the extrusion mold 33 is connected to the extrusion tube 31, the extrusion mold 33 is provided with a flow channel inside and an extrusion port in the middle of the bottom surface, a conveyor belt 34 is provided at a distance below the extrusion mold 33, the left and right ends of the conveyor belt 34 are both sleeved on the transmission roller 35, and the front and rear ends of the transmission roller 35 are rotatably connected to the inner bottom surface of the calendering film machine housing 9. The thickness and basic shape of the formed film are preliminarily determined by the extrusion die, which improves practicality; the transmission assembly includes a transmission motor 36, which is installed and fixed on the top surface of the inner casing 9 of the calendering film machine, and the rear rotating end of the transmission motor 36 is connected to the first clockwise toothed pulley 37 through a belt, and the outer side of the first clockwise toothed pulley 37 is meshed with a lower transmission gear 38, and the other side of the lower transmission gear 38 is meshed with an upper transmission gear 39, and the other end of the upper transmission gear 39 is meshed with a first counter-rotating toothed pulley 40, and the first clockwise toothed pulley 37 is connected to the second clockwise toothed pulley 41, the third clockwise toothed pulley 42, the fourth clockwise toothed pulley 43 and the fifth clockwise toothed pulley 44 in sequence through belts below the vertical plane, A reversing toothed pulley 40 is connected to the second reversing toothed pulley 45, the third reversing toothed pulley 46 and the fourth reversing toothed pulley 47 in sequence through a belt below the vertical plane. The front ends of the first clockwise toothed pulley 37, the second clockwise toothed pulley 41, the third clockwise toothed pulley 42, the fourth clockwise toothed pulley 43, the first reversing toothed pulley 40, the second reversing toothed pulley 45, the third reversing toothed pulley 46 and the fourth reversing toothed pulley 47 are all fixedly connected with a stretching roller 48, and the front end face of the fifth clockwise toothed pulley 44 is fixedly connected with a transmission roller 35. By sharing a set of transmission systems, it is ensured that all stretching rollers 48 can rotate synchronously as required to avoid being pulled apart, thereby improving practicality; the shaping component includes a stretching roller 48, and the front end of the stretching roller 48 It is rotatably connected to the front end of the calendering film machine housing 9, and the rear end of the stretching roller 48 is rotatably connected to the rotating frame plate 49. The upper and lower ends of the rotating frame plate 49 are both installed and fixed on the upper and lower end surfaces of the calendering film machine housing 9. A polymer film 50 is wound around the stretching roller 48. The polymer film 50 is extruded from the extrusion die 33 and falls downward on the top surface of the conveyor belt 34 and winds around the outer side of the stretching roller 48. The upper end of the polymer film 50 passes through the strip opening opened in the left end surface of the calendering film machine housing 9 and extends outward. Through the clamping and pulling of the transmission component and multiple stretching rollers 48, the film thickness is effectively and gradually changed, and the stretching deformation is a linear deformation, which enables the film thickness to be very finely controlled, thereby improving the adjustment accuracy of the device on the film thickness.

[0045] In the present invention, in order to solve the problem that the actual film temperature control accuracy is very unsatisfactory and the film structure is damaged, the following technical solutions are adopted: the winding component includes a steering roller 51, the front and rear ends of the steering roller 51 are rotatably connected to the upper end of the right side of the cooling machine shell 10, the right side of the outer side of the steering roller 51 abuts the polymer film 50, and the lower end of the polymer film 50 is wound on the outer side of the winding roller 52, and the front and rear ends of the winding roller 52 are rotatably connected to the bottom surface of the cooling machine shell 10. The finished film is collected and rolled up by the winding roller 52, which is convenient for the staff to take out in batches, thereby improving practicality; the critical components include Horizontal mounting frame 53, horizontal mounting frame 53 is horizontally mounted and fixed in the middle position of the interior of the cooling machine shell 10, and a temperature regulating tank 54 is provided on the left side of the top surface of the horizontal mounting frame 53, and a tank cover 55 is fixed on the top surface of the temperature regulating tank 54. A liquid inlet 56 and a liquid outlet 57 are symmetrically connected to the rear of the lower end of the outer side of the temperature regulating tank 54. The liquid inlet 56 and the liquid outlet 57 are matched with the supply equipment to facilitate the circulation of hot oil or cooling water in the temperature regulating tank 54, thereby freely adjusting the temperature in the tank and improving practicality; a pressure pipe 58 is vertically connected to the rear end of the outer side of the tank cover 55. The front end of the outer side is vertically connected to a pressure relief valve 59, and a pressure gauge 60 is fixed on the pressure relief valve 59. The pressure data in the tank can be displayed in real time through the pressure relief valve 59 and the pressure gauge 60, and the pressure is automatically relieved when the tank is over-pressured to avoid safety accidents, thereby improving safety. A liquid carbon dioxide tank 61 is provided in front of the temperature regulating tank 54, and a carbon dioxide inlet 62 is connected to the rear end of the outer side of the liquid carbon dioxide tank 61. The rear end of the carbon dioxide inlet 62 passes through the temperature regulating tank 54 and is connected to a carbon dioxide supercritical tank 63. A stirring rotor 64 is placed in the middle of the bottom surface of the carbon dioxide supercritical tank 63. A magnetic field pad 65 is provided on the bottom surface of the outer side of the supercritical tank 63, and the magnetic field pad 65 is installed and fixed on the bottom surface of the outer side of the temperature regulating tank 54. The magnetic field pad 65 drives the stirring rotor 64 to rotate remotely, thereby stirring the liquid carbon dioxide in the tank and improving the supercritical conversion speed of the liquid carbon dioxide; the temperature regulating tank 54 is sealed and sleeved on the outer wall of the cylindrical section of the carbon dioxide supercritical tank 63, and the tank cover 55 is sealed and provided on the top of the carbon dioxide supercritical tank 63, and the interior of the tank cover 55 is not connected with the interior of the temperature regulating tank 54; the inner ends of the pressurizing pipe 58 and the pressure relief valve 59 are both connected with the interior of the carbon dioxide supercritical tank 63.

[0046] In the present invention, the cooling assembly includes an air nozzle 66, which is fixed on the left front side of the outer side of the carbon dioxide supercritical tank 63. A honeycomb diverter 67 is provided on the outer side of the air nozzle 66. One end of the honeycomb diverter 67 is fixed on the outer side of the carbon dioxide supercritical tank 63. The other end of the honeycomb diverter 67 passes through the temperature regulating tank 54 and is fixed with a cooling box 68. The supercritical carbon dioxide in the tank is quickly ejected through the air nozzle 66, and after being diverted by the honeycomb diverter 67, it evenly passes through the film, thereby quickly and without damaging the cooling film, thereby improving the cooling quality; after the cooling box 68, the ... A recovery pipe is connected to the middle of the end face, and a passage is provided on the upper and lower end faces of the cooling box 68. A sealing curtain 69 is installed on the passage, and a polymer film 50 is passed through the sealing curtain 69. A laser thermometer 70 is fixed to the middle of the front end face of the cooling box 68. The laser thermometer 70 is aimed at the polymer film 50 inside the cooling box 68. The carbon dioxide is recovered through the recovery pipe and condensed for recycling. The film temperature is detected in real time by the laser thermometer 70, and then the pressure in the tank is dynamically adjusted and the temperature of the supercritical carbon dioxide is stably changed, so as to accurately control the cooling temperature and improve the cooling accuracy.

[0047] Working Principle: In this embodiment, the present invention also proposes a method for using a waterproof breathable membrane processing device with a cooling mechanism, comprising the following steps:

[0048] Step 1: First, power all electrical equipment and connect the device and all supply equipment. Then, start the fresh air equipment to continuously purify the air in the film forming chamber frame 1 and the cooling chamber frame 2 through the ventilation top plate 7. Then, the staff opens the double door 3 and the single door 4, holds the feed cover 13 and rotates it to remove the feed cover 13, and then pours the prepared raw material particles into the mixing tank 11 through the feed port. After all the raw materials in accordance with the pre-proportioned ratio are poured into the mixing tank 11, rotate the feed cover 13 to reclose the feed port. After a final check, the double door 3 and the single door 4 can be closed and ready to start processing.

[0049] Step 2, the processing stage is first started by starting the device in the controller room 5, and the electrical equipment on the device starts to work. First, the stirring motor 14 drives the stirring frame 15 to rotate, so as to fully mix the raw materials in the mixing tank 11, and then the first feeding motor 18 drives the first spiral feeding column 17 to rotate to feed the mixed raw materials in the mixing tank 11 into the heating housing 20. The mixed raw materials gradually melt under the continuous heating of the heating wire 22 and reach the expected temperature. Then the second feeding motor 24 drives the second spiral feeding column 23 to rotate, so as to feed the molten raw materials into the extruder housing 27. Finally, the extrusion motor 29 drives the extrusion spiral column 28 to squeeze the molten raw materials into the extrusion tube 31 at the required speed. During each stage, the feeding speed can be freely adjusted to achieve highly adaptable dynamic coordination;

[0050] In step three, the molten raw material entering the extrusion tube 31 will enter the extrusion die 33, and then become a film of a specified thickness and shape from the extrusion port below the extrusion die 33. The film then falls on the conveyor belt 34 and is flattened horizontally. After contacting the stretching roller 48, it detours and is squeezed and stretched, eventually forming a polymer film 50 of a specified thickness. During this period, the speed of the stretching roller 48 is adjusted by adjusting the speed of the transmission motor 36, thereby adjusting the stretching force of the stretching roller 48, thereby changing the stretching speed at each point. Under the condition of the same detour distance, the faster the stretching speed, the smaller the thickness of the polymer film 50. In this way, the thickness of the polymer film 50 is linearly adjusted, thereby achieving high-precision thickness control.

[0051] Step 4: During the calendering of the polymer film 50, the liquid carbon dioxide tank 61 introduces liquid carbon dioxide into the carbon dioxide supercritical tank 63. At the same time, the supply device circulates hot oil at a temperature of 35-50°C into the temperature regulating tank 54 through the liquid inlet 56 and the liquid outlet 57. At the same time, the supply device pressurizes the carbon dioxide supercritical tank 63 to 8-15 MPa through the pressure pipe 58. At this time, the liquid carbon dioxide in the carbon dioxide supercritical tank 63 will be converted to a supercritical state, thereby having a special state of low viscosity, high diffusivity, and no surface tension. At the same time, the magnetic field pad 65 is started to drive the stirring rotor 64 to rotate, thereby stirring and accelerating the conversion of the liquid carbon dioxide to the supercritical state;

[0052] Step five, the air nozzle 66 will automatically spray out the supercritical carbon dioxide in the carbon dioxide supercritical tank 63 when the internal pressure reaches the threshold value. The supercritical carbon dioxide is evenly diverted through the honeycomb diverter 67 and enters the cooling box 68. When the polymer film 50 enters the cooling box 68, the supercritical carbon dioxide will quickly and non-damagingly cool the polymer film 50, causing it to quickly crystallize and solidify. Due to the shrinkage of the crystallization, a tiny pore structure will be formed, which lays a good foundation for the subsequent stretching and pore expansion work. Then, the prepared polymer film 50 will be collected into a roll on the winding roller 52 and wait for the staff to take it out and enter the stretching and pore expansion process.

[0053] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A waterproof and breathable film processing equipment with a cooling mechanism, comprising a film forming chamber frame (1) and a cooling chamber frame (2), wherein the film forming chamber frame (1) and the cooling chamber frame (2) are both welded from aluminum alloy bars, a double-door (3) is hingedly connected to the front end surface of the film forming chamber frame (1), a single-door (4) is hingedly connected to one side of the front end of the cooling chamber frame (2), a controller room (5) is fixedly installed on the other side of the cooling chamber frame (2), the film forming chamber frame (1), the cooling chamber frame (2), the double-door (3) and the single-door (4) are all sealed by installing a high-transmittance glass plate (6), and a ventilation top plate (7) is fixedly installed on the top surface of the film forming chamber frame (1), characterized in that: An extruder housing (8) and a calendering machine housing (9) are mounted inside the film forming chamber frame (1), and a cooling machine housing (10) is mounted inside the cooling chamber frame (2). An extrusion mechanism, a calendering mechanism and a cooling mechanism are respectively mounted inside the extruder housing (8), the calendering machine housing (9) and the cooling machine housing (10), wherein the extrusion mechanism includes a stirring component, a feeding component, a melting component and an extrusion component, the calendering mechanism includes a forming component, a transmission component and a shaping component, and the cooling mechanism includes a winding component, a critical component and a cooling component; The critical component includes a horizontal mounting frame (53), the horizontal mounting frame (53) is horizontally mounted and fixed at the middle position inside the cooling machine shell (10), the left mounting frame on the top surface of the horizontal mounting frame (53) is provided with a temperature regulating tank (54), the top surface of the temperature regulating tank (54) is fixed with a tank cover (55), the rear side of the lower end of the outer side of the temperature regulating tank (54) is horizontally symmetrically connected with a liquid inlet (56) and a liquid outlet (57), the rear end of the outer side of the tank cover (55) is vertically connected with a pressurizing pipe (58), the front end of the outer side of the tank cover (55) is vertically connected with a pressure relief valve (59), the pressure relief valve (59) is fixed with a pressure gauge (60), the front of the temperature regulating tank (54) is provided with a liquid carbon dioxide tank (61), the rear side of the outer side of the liquid carbon dioxide tank (61) is horizontally symmetrical ... The end is connected to a carbon dioxide inlet (62), the rear end of the carbon dioxide inlet (62) passes through the temperature regulating tank (54) and is connected to the carbon dioxide supercritical tank (63), a stirring rotor (64) is placed in the middle of the bottom surface of the interior of the carbon dioxide supercritical tank (63), and a magnetic field pad (65) is provided on the bottom surface of the outer side of the carbon dioxide supercritical tank (63), and the magnetic field pad (65) is fixed to the bottom surface of the outer side of the temperature regulating tank (54); the temperature regulating tank (54) is sealed and sleeved on the outer wall of the straight section of the carbon dioxide supercritical tank (63), and the tank cover (55) is sealed and provided on the top of the carbon dioxide supercritical tank (63), and the interior of the tank cover (55) is not connected to the interior of the temperature regulating tank (54); the inner ends of the pressurizing pipe (58) and the pressure relief valve (59) are both connected to the interior of the carbon dioxide supercritical tank (63); The cooling assembly includes an air nozzle (66), which is fixed on the left front side of the outer side of the carbon dioxide supercritical tank (63), and a honeycomb diverter (67) is provided on the outer side of the air nozzle (66). One end of the honeycomb diverter (67) is fixed on the outer side of the carbon dioxide supercritical tank (63), and the other end of the honeycomb diverter (67) passes through the temperature regulating tank (54) and is fixed to a cooling box (68). The middle part of the rear end face of the cooling box (68) is connected to a recovery pipe. The upper and lower end faces of the cooling box (68) are provided with a through-hole, and a sealing curtain (69) is installed on the through-hole. A polymer film (50) is passed through the sealing curtain (69). A laser temperature detector (70) is fixed on the middle part of the front end face of the cooling box (68), and the laser temperature detector (70) is aligned with the polymer film (50) inside the cooling box (68).

2. The waterproof breathable membrane processing equipment with a cooling mechanism according to claim 1, characterized in that: The stirring assembly includes a mixing tank (11), the mixing tank (11) is funnel-shaped and has a round tank top (12) fixedly mounted on the top surface via a flange ring, a feed port is obliquely opened in front of the outer surface of the round tank top (12), the outer surface of the feed port is provided with a thread, and a feed cover (13) is fixedly screwed onto the feed port via the thread, a stirring motor (14) is fixedly mounted on the top of the outer surface of the round tank top (12), and the lower rotating end of the stirring motor (14) passes through the round tank top (12) and is fixedly connected to a stirring frame (15).

3. The waterproof breathable membrane processing equipment with a cooling mechanism according to claim 2, characterized in that: The feeding assembly includes a first feeding housing (16), the upper middle portion of the outer side surface of the first feeding housing (16) passes through the extruder housing (8) and is vertically connected to the bottom surface of the mixing tank (11) through a flange ring, the front and rear ends of the first feeding housing (16) are fixed to the inner top surface of the extruder housing (8), the first feeding housing (16) is coaxially connected to a first spiral feeding column (17) inside, the rear end of the first spiral feeding column (17) is connected to a first feeding motor (18) through a belt, and the first feeding motor (18) is fixed to the inner top surface of the extruder housing (8).

4. The waterproof breathable membrane processing equipment with a cooling mechanism according to claim 3, characterized in that: The melting assembly includes a first feeding pipe (19), the upper end of the first feeding pipe (19) is connected to the lower right corner of the front end of the outer side surface of the first feeding shell (16) through a flange ring, the lower end of the first feeding pipe (19) is provided with a heating shell (20), and the heating shell (20) is nested with a second feeding shell (21), the lower end of the first feeding pipe (19) passes through the top surface of the heating shell (20) and is connected to the inside of the second feeding shell (21), and the interlayer between the second feeding shell (21) and the heating shell (20) A plurality of heating wires (22) are wound around the second feeding casing (21), and a second spiral feeding column (23) is coaxially connected to the inside of the second feeding casing (21), and a second feeding motor (24) is fixed to the lower end of the second spiral feeding column (23), and the second feeding motor (24) is mounted and fixed on the bottom surface of the heating casing (20), and the heating casing (20) is mounted and fixed on the inner bottom surface of the extruder shell (8), and the rear end of the lower end of the outer side surface of the second feeding casing (21) horizontally penetrates the heating casing (20) and is connected to a second feeding pipe (25).

5. The waterproof breathable membrane processing equipment with a cooling mechanism according to claim 4, characterized in that: The extrusion assembly includes a third feeding pipe (26), the front end of the third feeding pipe (26) is connected to the second feeding pipe (25) through a flange ring, and the rear end of the third feeding pipe (26) is connected to the extruder housing (27), the extruder housing (27) is horizontally mounted and fixed on the inner bottom surface of the extruder housing (8), and the extrusion spiral column (28) is coaxially connected to the inside of the extruder housing (27), and the right end of the extrusion spiral column (28) is connected to the extrusion motor (29) through a belt, and the extrusion motor (29) is mounted and fixed on the mounting frame (30), and the mounting frame (30) is mounted and fixed in the middle of the rear end surface of the extruder housing (8). A discharge port is provided at the left end of the extruder housing (27), and the discharge port passes through the left end surface of the extruder housing (8).

6. The waterproof breathable membrane processing equipment with a cooling mechanism according to claim 5, characterized in that: The molding assembly includes an extrusion tube (31), the right end of the extrusion tube (31) is connected to the left end of the extruder housing (27) through a flange ring, the left end of the extrusion tube (31) passes through the right end face of the calendering film machine housing (9) and is connected to the mold mounting frame (32), the left end face of the mold mounting frame (32) is matched with an extrusion mold (33) mounted and fixed, the extrusion mold (33) is connected to the extrusion tube (31), a flow channel is provided inside the extrusion mold (33) and an extrusion port is provided in the middle of the bottom surface, a conveyor belt (34) is provided at a distance below the extrusion mold (33), the left and right ends of the conveyor belt (34) are both sleeved on the transmission roller (35), and the front and rear ends of the transmission roller (35) are both rotatably connected to the bottom surface of the inner side of the calendering film machine housing (9).

7. The waterproof breathable membrane processing equipment with a cooling mechanism according to claim 6, characterized in that: The transmission assembly includes a transmission motor (36), which is mounted and fixed on the inner top surface of the calendering film machine housing (9), and the rear end rotating end of the transmission motor (36) is connected to the first clockwise toothed belt wheel (37) through a belt, and the outer side surface of the first clockwise toothed belt wheel (37) is meshedly connected to the lower transmission gear (38), and the other side of the lower transmission gear (38) is meshedly connected to the upper transmission gear (39), and the other end of the upper transmission gear (39) is meshedly connected to the first counter-rotating toothed belt wheel (40), and the first clockwise toothed belt wheel (37) is connected to the second clockwise toothed belt wheel (41), the third clockwise toothed belt wheel (42), the fourth counter-rotating toothed belt wheel (43), the fifth counter-rotating toothed belt wheel (44), the sixth counter-rotating toothed belt wheel (45), the seventh counter-rotating toothed belt wheel (46), the eighth counter-rotating toothed belt wheel (47), the ninth counter-rotating toothed belt wheel (48), the ninth counter-rotating toothed belt wheel (49), the ninth counter-rotating toothed belt wheel (41), the eighth counter-rotating toothed belt wheel (42), the ninth counter-rotating toothed belt wheel (43), the ninth counter-rotating toothed belt wheel (45), the ninth counter-rotating toothed belt wheel (46), the ninth counter-rotating toothed belt wheel (47), the ninth counter-rotating toothed belt wheel (48), the ninth counter-rotating toothed belt wheel (49), the ninth counter-rotating toothed belt wheel (49), the ninth counter-rotating toothed belt wheel (41 ... A clockwise toothed pulley (43) and a fifth clockwise toothed pulley (44); the first counter-rotating toothed pulley (40) is connected to the second counter-rotating toothed pulley (45), the third counter-rotating toothed pulley (46) and the fourth counter-rotating toothed pulley (47) in sequence through a belt below the vertical plane; the front ends of the first clockwise toothed pulley (37), the second clockwise toothed pulley (41), the third clockwise toothed pulley (42), the fourth clockwise toothed pulley (43), the first counter-rotating toothed pulley (40), the second counter-rotating toothed pulley (45), the third counter-rotating toothed pulley (46) and the fourth counter-rotating toothed pulley (47) are all fixedly connected to a stretching roller (48); the front end of the fifth clockwise toothed pulley (44) is fixedly connected to a transmission roller (35).

8. The waterproof breathable membrane processing equipment with a cooling mechanism according to claim 7, characterized in that: The shaping component includes a stretching roller (48), the front end of the stretching roller (48) is rotatably connected to the front end of the inner shell (9) of the calendering film machine, and the rear end of the stretching roller (48) is rotatably connected to the rotating frame plate (49), and the upper and lower ends of the rotating frame plate (49) are both installed and fixed on the upper and lower end surfaces of the inner shell (9) of the calendering film machine. A polymer film (50) is wound around the stretching roller (48), and the polymer film (50) is extruded from the extrusion die (33) and falls downward on the top surface of the conveyor belt (34) and winds around the outer side surface of the stretching roller (48). The upper end of the polymer film (50) passes through the strip opening provided on the left end surface of the calendering film machine shell (9) and extends outward. The winding assembly includes a steering roller (51), the front and rear ends of the steering roller (51) are rotatably connected to the upper right end of the cooling machine shell (10), the right side of the outer side of the steering roller (51) abuts the polymer film (50), the lower end of the polymer film (50) is wound on the outer side of the winding roller (52), and the front and rear ends of the winding roller (52) are rotatably connected to the bottom surface of the cooling machine shell (10).

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