A water washing type PU film production process

Abstract

The application discloses a kind of water washing type PU film production process, belong to PU film production equipment technical field, comprising: cleaning box;First through-hole, first through-hole is set to two, two first through-holes are respectively set in the left and right sides of cleaning box;Second through-hole, second through-hole is set to two, two second through-holes are respectively set in the front and back of cleaning box;Horizontal plate, horizontal plate is slidably connected in cleaning box;Half-round plate, half-round plate is set to two groups, two groups of half-round plate are all set to the outside of cleaning box, the water is discharged by annular spray pipe, the upper and lower two surfaces of PU film can be washed by the water sprayed in annular spray pipe, and the two surfaces of PU film are cleaned simultaneously by the rotation of multiple sponge cleaning discs, so that the convenience of cleaning PU film is optimized, and the PU film production convenience is further optimized.

Description

Technical Field

[0001] This invention relates to the field of PU film production equipment technology, and more specifically, to a water-washing PU film production process. Background Technology

[0002] It boasts excellent elasticity and high lightness. Despite its extremely thin thickness (0.012-0.035mm), it exhibits unparalleled physical properties in terms of waterproofing (withstanding water pressure exceeding 10,000 mm water column). Utilizing advanced technology to incorporate hydrophilic agents into the material, the membrane not only possesses high waterproofing performance but also excellent breathability (human sweat can freely penetrate between the membrane layers). This functional breakthrough, combined with advanced bonding processing techniques in the textile industry, significantly enhances the added value of textiles. It is now widely used in snowsuits, windbreakers, winter jackets, and gloves.

[0003] Existing technologies disclose several patent documents related to PU films. Chinese patent application number CN202121835407.8 discloses an automated production equipment for medical PU film dressings, including an adhesive application device, a bottom layer conveying device, a drying device, an environmental protection treatment device, a top layer conveying device, and a roll-forming device. The adhesive application device is located at the front end of the bottom layer conveying device, with a baffle mounted on a support frame and a coating plate positioned behind the baffle. The adhesive application device also includes an adhesive outlet pipe, one end of which is connected to adhesive. A drying device is located behind the adhesive application device, and an environmental protection treatment device is located at the top of the drying device, comprising a suction hood and an exhaust duct. The top layer conveying device includes a top layer release paper roll and a top layer conveyor belt. A roll-forming device is located at the bottom of the bottom layer conveyor belt. This production equipment can automate multiple processes, including PU film coating, three-layer material bonding, and roll-forming.

[0004] The aforementioned patents do not facilitate the washing of PU films, resulting in poor production efficiency and hindering the optimization of PU film production convenience. Therefore, we propose a water-washable PU film production process. Summary of the Invention

[0005] 1. Technical problems to be solved

[0006] To address the problems existing in the prior art, the present invention aims to provide a water-washable PU film production process. The present invention discharges water through an annular nozzle, and the water sprayed out through the annular nozzle can wash both sides of the PU film. Furthermore, the simultaneous rotation of multiple sponge cleaning discs facilitates the cleaning of both sides of the PU film, thereby optimizing the convenience of cleaning the PU film and thus optimizing the convenience of PU film production.

[0007] 2. Technical Solution

[0008] To solve the above problems, the present invention adopts the following technical solution:

[0009] A water-washable PU film production process includes the following steps:

[0010] S1. Raw material preparation: Prepare polyurethane (PU) raw materials. Fillers, plasticizers, antioxidants, etc. can also be added as needed.

[0011] S2. Raw material processing: Chop the raw materials and dry them to remove moisture and impurities. The purpose of pretreatment is to ensure the quality and uniformity of the raw materials.

[0012] S2, Extrusion molding:

[0013] S21. Feeding: The pre-treated PU film raw material is fed into the extruder through the feed port;

[0014] S22. Melting: The raw material gradually melts and forms a melt in the extruder through heating and mechanical shearing.

[0015] S23. Extrusion: The molten raw material is pushed into the die head by the screw of the extruder and extruded into shape through the die head's orifice;

[0016] S24. Film Cooling: The extruded PU film is cooled and solidified rapidly by the cooling rollers.

[0017] S3, Stretching:

[0018] S31. Heating: The cooled and cured PU film is heated to a certain temperature by means of heating rollers or hot air;

[0019] S32. Stretching: The heated PU film is stretched by stretching rollers or stretching mechanism to a certain proportion at a certain temperature.

[0020] S33. Curing: The stretched PU film is cooled and cured rapidly by the cooling rollers.

[0021] S4, Cooling:

[0022] S41, Cooling Roller: The stretched PU film is cooled and solidified rapidly by the cooling roller.

[0023] S42, Cooling air: Cooling air is blown onto the PU film to accelerate its cooling and curing;

[0024] S5. Cleaning: The PU film is washed with water using a washing device to clean the surface of the PU film, thereby facilitating its cleaning.

[0025] S6, Cutting:

[0026] S61. Positioning: Position the PU film onto the cutting machine to ensure cutting accuracy;

[0027] S62. Cutting: Cutting the PU film using a cutting blade or cutting mechanism;

[0028] S63. Collection: Collect the cut PU film for the next step of packaging and use;

[0029] S7. Packaging:

[0030] S71. Winding: The cut PU film is wound into rolls using a winding machine for easy storage and transportation;

[0031] S72. Packaging: Package the wound PU film to protect it from the influence of the external environment.

[0032] As a preferred embodiment of the present invention, in S1-S7, the water washing device includes:

[0033] Cleaning box;

[0034] The first through hole is provided in two parts, and the two first through holes are respectively opened on the left and right sides of the cleaning box;

[0035] The second through hole is provided in two parts, which are respectively opened on the front and rear sides of the cleaning box;

[0036] A horizontal plate, which is slidably connected inside the cleaning box;

[0037] The semicircular plates are configured in two sets, and both sets of the semicircular plates are located on the outside of the cleaning box.

[0038] The clamping plate is provided in two parts, and the two clamping plates are respectively connected to two sets of semi-circular plates;

[0039] A cleaning mechanism, wherein the cleaning mechanism is disposed inside the cleaning box;

[0040] A clamping mechanism, wherein the clamp is disposed on the side end of the cleaning box;

[0041] A water washing mechanism is mounted on a cleaning box and is connected to a horizontal plate.

[0042] In a preferred embodiment of the present invention, the washing mechanism includes a washing component and a moving component, both of which are disposed on a horizontal plate and are connected to each other.

[0043] As a preferred embodiment of the present invention, the water washing assembly includes a water tank, a connecting pipe, a water pump, an annular spray pipe, and a connecting rod. The water tank is disposed on a horizontal plate, the connecting pipe is installed at the bottom of the water tank, the water pump is installed on the connecting pipe, and the annular spray pipe is installed at the drain outlet of the water pump.

[0044] In a preferred embodiment of the present invention, the moving component includes a displacement screw, a long nut, a first motor, a slider, a guide hole, and a guide rod. The displacement screw is rotatably connected to the second through hole, and the long nut is threadedly connected to the surface of the displacement screw. The first motor is installed on the side end of the cleaning box, and the output end of the first motor movably passes through the cleaning box. The output end of the first motor is fixedly connected to the long nut. Two sliders are provided, and the two sliders are respectively fixedly connected to the front and rear sides of the horizontal plate. The two sliders are slidably connected to the two second through holes. The long nut is installed in the slider. The guide hole is opened on the side end of the slider. The guide rod is fixedly connected to the second through hole, and the guide rod slides with the guide hole.

[0045] In a preferred embodiment of the present invention, the clamping mechanism is configured as two sets, both sets of clamping mechanisms being located on the outside of the cleaning box. Each set of clamping mechanisms includes a second support plate, a mounting frame, a partition plate, a second motor, a bidirectional lead screw, short nuts, and mounting blocks. The second support plate is fixedly connected to the cleaning box, the mounting frame is located at the side end of the cleaning box, the partition plate is fixedly connected to the mounting frame and rotatably connected to the second support plate, the second motor is mounted on the mounting frame and its output end movably passes through the mounting frame, the bidirectional lead screw is rotatably connected to the mounting frame and fixedly connected to the output end of the second motor, and two short nuts and two mounting blocks are provided. The two short nuts are threadedly connected to the surface of the bidirectional lead screw, and the two mounting blocks are respectively fixedly connected to two semicircular plates and fixedly connected to the two short nuts.

[0046] In a preferred embodiment of the present invention, the cleaning mechanism is configured as two sets, both sets of the cleaning mechanism are disposed inside the cleaning box, each set of the cleaning mechanism includes a mounting plate, a receiving box, a fourth motor, a sponge cleaning disc, gears and a transmission toothed belt. The mounting plate is disposed on the cleaning box, the receiving box is mounted on the mounting plate, the fourth motor is mounted on the mounting plate, and the output end of the fourth motor movably passes through the mounting plate. There are multiple sponge cleaning discs and gears, the multiple sponge cleaning discs are rotatably connected to the mounting plate, and the multiple sponge cleaning discs movably pass through the receiving box. The multiple gears are fixedly connected to the multiple sponge cleaning discs, and the transmission toothed belt is sleeved on the surface of the multiple gears, and the transmission toothed belt is drivingly connected to the multiple gears.

[0047] As a preferred embodiment of the present invention, each set of cleaning mechanisms further includes a mounting base and a cylinder, wherein the mounting base is fixedly connected to the cleaning box and the cylinder is mounted on the mounting base.

[0048] As a preferred embodiment of the present invention, two first support plates are fixedly connected to the side of the cleaning box, and an installation cylinder is rotatably connected between the two first support plates. Four support legs are fixedly connected to the bottom of the cleaning box. A drain pipe is installed at the front end of the cleaning box, and a valve is installed on the drain pipe. A third motor is installed on the second support plate, and the output end of the third motor movably passes through the second support plate and is fixedly connected to the partition plate.

[0049] As a preferred embodiment of the present invention, a control panel is installed at the front end of the cleaning box, and the control panel is electrically connected to the first motor, the water pump, the second motor, the third motor, the cylinder and the fourth motor.

[0050] 3. Beneficial effects

[0051] Compared with the prior art, the advantages of this invention are:

[0052] (1) When it is necessary to fix the PU film, the PU film is first installed on the mounting cylinder. Then, one end of the PU film is pulled out and passed through the two first through holes. At this time, one end of the PU film is placed between the two clamping plates. Then, the output ends of the two second motors are started to rotate at the same time. The rotation of the output ends of the second motors drives the bidirectional screw to rotate. The rotation of the bidirectional screw causes the two short nuts to move inward or outward at the same time. When the bidirectional screw rotates forward, the two short nuts move inward on the surface of the bidirectional screw at the same time. The movement of the two short nuts drives the mounting block to move. The mounting block drives the semicircular plate and clamping plate to move. The movement of the two clamping plates clamps and fixes the PU film. After the PU film is clamped, the second motor can be turned off.

[0053] (2) When the PU film needs to be washed with water, the water pump is started to pump out the water in the water tank and discharge the water through the annular nozzle. The water sprayed out through the annular nozzle can wash the top and bottom surfaces of the PU film.

[0054] (3) When the surface of the PU film needs to be cleaned, the output end of the third motor is started to rotate. The rotation of the output end of the third motor drives the partition to rotate. The rotation of the partition drives the mounting frame and the two semi-circular plates to rotate. The two semi-circular plates drive the two clamping plates to rotate, which makes it easier to wrap the PU film around the surface of the two clamping plates. At this time, the movement of the PU film and the water washing of the annular spray pipe facilitate the cleaning of the surface of the PU film. Then, the extension ends of the two cylinders are started to extend. The extension ends of the cylinders push the mounting plate and the sponge cleaning disc to move, which makes it easier for multiple sponge cleaning discs to contact both sides of the PU film. After multiple sponge cleaning discs contact the PU film, the cylinders can be closed. At the same time, the output ends of the two fourth motors are started to rotate. The rotation of the output end of the fourth motor drives one of the sponge cleaning discs to rotate. The rotation of the sponge cleaning disc drives the corresponding gear to rotate. The transmission of the gear and the transmission belt makes multiple gears and sponge cleaning discs rotate at the same time. The simultaneous rotation of multiple sponge cleaning discs facilitates the cleaning of both sides of the PU film, thus optimizing the convenience of cleaning the PU film.

[0055] (4) In this scheme, the output end of the first motor is started to rotate, and the output end of the first motor drives the displacement screw to rotate. The rotation of the displacement screw causes the long nut to move on the surface of the displacement screw. The movement of the long nut drives the slider and the horizontal plate to move. The movement of the horizontal plate drives the movement of the annular nozzle, thus facilitating the back-and-forth washing of the surface of the PU film. Attached Figure Description

[0056] Figure 1 This is a front perspective view of the present invention;

[0057] Figure 2 This is a side perspective view of the present invention;

[0058] Figure 3 This is a front sectional view of the present invention;

[0059] Figure 4 This is an exploded view of the entire invention;

[0060] Figure 5 This is a schematic diagram of the water washing mechanism of the present invention;

[0061] Figure 6 This is an exploded view of the water washing mechanism of the present invention;

[0062] Figure 7 This is a schematic diagram of the clamping mechanism of the present invention;

[0063] Figure 8 This is an exploded view of the clamping mechanism of the present invention;

[0064] Figure 9 This is a schematic diagram of the cleaning mechanism of the present invention;

[0065] Figure 10 This is an exploded view of the cleaning mechanism of the present invention.

[0066] Explanation of the labels in the diagram:

[0067] 1. Cleaning box; 2. Control panel; 3. First through hole; 4. Second through hole; 5. Drain pipe; 6. Valve; 7. Support leg; 8. First support plate; 9. Mounting cylinder; 10. Displacement screw; 11. Long nut; 12. First motor; 13. Horizontal plate; 14. Slider; 15. Guide hole; 16. Guide rod; 17. Water tank; 18. Connecting pipe; 19. Water pump; 20. Annular nozzle; 21. Connecting rod; 22. Second support plate; 23. Mounting frame; 24. Partition plate; 25. Second motor; 26. Bidirectional screw; 27. Short nut; 28. Third motor; 29. ​​Mounting block; 30. Semicircular plate; 31. Clamping plate; 32. Mounting seat; 33. Cylinder; 34. Mounting plate; 35. Receiving box; 36. Fourth motor; 37. Sponge cleaning disc; 38. Gear; 39. Transmission toothed belt. Detailed Implementation

[0068] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0069] Example:

[0070] Please see Figure 1-10 A water-washable PU film production process includes the following steps:

[0071] S1. Raw material preparation: Prepare polyurethane (PU) raw materials. Fillers, plasticizers, antioxidants, etc. can also be added as needed.

[0072] S2. Raw material processing: Chop the raw materials and dry them to remove moisture and impurities. The purpose of pretreatment is to ensure the quality and uniformity of the raw materials.

[0073] S2, Extrusion molding:

[0074] S21. Feeding: The pre-treated PU film raw material is fed into the extruder through the feed port;

[0075] S22. Melting: The raw material gradually melts and forms a melt in the extruder through heating and mechanical shearing.

[0076] S23. Extrusion: The molten raw material is pushed into the die head by the screw of the extruder and extruded into shape through the die head's orifice;

[0077] S24. Film Cooling: The extruded PU film is cooled and solidified rapidly by the cooling rollers.

[0078] S3, Stretching:

[0079] S31. Heating: The cooled and cured PU film is heated to a certain temperature by means of heating rollers or hot air;

[0080] S32. Stretching: The heated PU film is stretched by stretching rollers or stretching mechanism to a certain proportion at a certain temperature.

[0081] S33. Curing: The stretched PU film is cooled and cured rapidly by the cooling rollers.

[0082] S4, Cooling:

[0083] S41, Cooling Roller: The stretched PU film is cooled and solidified rapidly by the cooling roller.

[0084] S42, Cooling air: Cooling air is blown onto the PU film to accelerate its cooling and curing;

[0085] S5. Cleaning: The PU film is washed with water using a washing device to clean the surface of the PU film, thereby facilitating its cleaning.

[0086] S6, Cutting:

[0087] S61. Positioning: Position the PU film onto the cutting machine to ensure cutting accuracy;

[0088] S62. Cutting: Cutting the PU film using a cutting blade or cutting mechanism;

[0089] S63. Collection: Collect the cut PU film for the next step of packaging and use;

[0090] S7. Packaging:

[0091] S71. Winding: The cut PU film is wound into rolls using a winding machine for easy storage and transportation;

[0092] S72. Packaging: Package the wound PU film to protect it from the influence of the external environment.

[0093] Specifically, in S1-S7, the water washing device includes:

[0094] Cleaning box 1;

[0095] The first through hole 3 is provided in two parts, and the two first through holes 3 are respectively opened on the left and right sides of the cleaning box 1;

[0096] The second through hole 4 is provided in two parts, and the two second through holes 4 are respectively opened on the front and rear sides of the cleaning box 1;

[0097] Horizontal plate 13 is slidably connected to the cleaning box 1;

[0098] The semicircular plate 30 is configured in two sets, and both sets of semicircular plates 30 are located on the outside of the cleaning box 1.

[0099] There are two clamping plates 31, and the two clamping plates 31 are respectively connected to two sets of semi-circular plates 30.

[0100] In this embodiment, the first through hole 3 is opened to facilitate the penetration of the PU film, the second through hole 4 is opened to facilitate sliding cooperation with the slider 14, the horizontal plate 13 is opened to facilitate the installation of the water tank 17, the semi-circular plate 30 is opened to facilitate the fixing of the clamping plate 31, the two clamping plates 31 are opened to facilitate the clamping of the PU film, and the two clamping plates 31 are concave and convex respectively to facilitate the clamping of the PU film. The present invention discharges water through the annular nozzle 20. The water sprayed through the annular nozzle 20 can wash the upper and lower surfaces of the PU film, and the simultaneous rotation of multiple sponge cleaning discs 37 facilitates the cleaning of both sides of the PU film, thereby optimizing the convenience of cleaning the PU film.

[0101] Specifically, the washing mechanism includes a washing component and a moving component, both of which are mounted on the horizontal plate 13 and are connected to each other.

[0102] In this embodiment, the washing mechanism includes a washing component and a moving component, both of which are mounted on the horizontal plate 13 and are connected to each other.

[0103] Specifically, the water washing assembly includes a water tank 17, a connecting pipe 18, a water pump 19, an annular spray pipe 20, and a connecting rod 21. The water tank 17 is mounted on the horizontal plate 13, the connecting pipe 18 is installed at the bottom of the water tank 17, the water pump 19 is installed on the connecting pipe 18, and the annular spray pipe 20 is installed at the drain port of the water pump 19.

[0104] In this embodiment, the water tank 17 is for easy water storage, and the connecting pipe 18 is for easy connection between the water tank 17 and the annular spray pipe 20. The water pump 19 is started to pump out the water in the water tank 17 and discharge the water through the annular spray pipe 20. The water sprayed out through the annular spray pipe 20 can wash the upper and lower surfaces of the PU film.

[0105] Specifically, the moving component includes a displacement screw 10, a long nut 11, a first motor 12, a slider 14, a guide hole 15, and a guide rod 16. The displacement screw 10 is rotatably connected to the second through hole 4. The long nut 11 is threadedly connected to the surface of the displacement screw 10. The first motor 12 is installed on the side end of the cleaning box 1, and the output end of the first motor 12 moves through the cleaning box 1. The output end of the first motor 12 is fixedly connected to the long nut 11. There are two sliders 14, which are fixedly connected to the front and rear sides of the cross plate 13, respectively. The two sliders 14 are slidably connected to the two second through holes 4. The long nut 11 is installed in the slider 14. The guide hole 15 is opened on the side end of the slider 14. The guide rod 16 is fixedly connected to the second through hole 4, and the guide rod 16 is slidably engaged with the guide hole 15.

[0106] In this embodiment, the output end of the first motor 12 is started to rotate, which drives the displacement screw 10 to rotate. The rotation of the displacement screw 10 causes the long nut 11 to move on the surface of the displacement screw 10. The movement of the long nut 11 drives the slider 14 and the horizontal plate 13 to move. The movement of the horizontal plate 13 drives the annular nozzle 20 to move. The guide hole 15 is opened to facilitate sliding cooperation with the guide rod 16 so as to facilitate the stable movement of the slider 14.

[0107] Specifically, the clamping mechanism is configured in two sets, both of which are located on the outside of the cleaning box 1. Each set of clamping mechanisms includes a second support plate 22, a mounting frame 23, a partition plate 24, a second motor 25, a bidirectional lead screw 26, a short nut 27, and a mounting block 29. The second support plate 22 is fixedly connected to the cleaning box 1. The mounting frame 23 is located at the side end of the cleaning box 1. The partition plate 24 is fixedly connected inside the mounting frame 23 and is rotatably connected to the second support plate 22. The second motor 25 is mounted on the mounting frame 23, and the output end of the second motor 25 moves through the mounting frame 23. The bidirectional lead screw 26 is rotatably connected inside the mounting frame 23 and is fixedly connected to the output end of the second motor 25. There are two short nuts 27 and two mounting blocks 29. The two short nuts 27 are threadedly connected to the surface of the bidirectional lead screw 26. The two mounting blocks 29 are fixedly connected to the two semicircular plates 30 respectively, and the two mounting blocks 29 are fixedly connected to the two short nuts 27.

[0108] In this embodiment, the second support plate 22 is for facilitating the rotational connection of the partition plate 24. The output end of the second motor 25 is started to rotate, which drives the bidirectional lead screw 26 to rotate. The rotation of the bidirectional lead screw 26 causes the two short nuts 27 to move inward or outward simultaneously. When the bidirectional lead screw 26 rotates clockwise, the two short nuts 27 move inward simultaneously on the surface of the bidirectional lead screw 26. The movement of the two short nuts 27 drives the mounting block 29 to move, which in turn drives the semi-circular plate 30 and the clamping plate 31 to move. The movement of the two clamping plates 31 clamps and fixes the PU film.

[0109] Specifically, the cleaning mechanism is configured into two sets, both of which are located inside the cleaning box 1. Each set of cleaning mechanisms includes a mounting plate 34, a receiving box 35, a fourth motor 36, a sponge cleaning disc 37, gears 38, and a transmission toothed belt 39. The mounting plate 34 is mounted on the cleaning box 1, the receiving box 35 is mounted on the mounting plate 34, the fourth motor 36 is mounted on the mounting plate 34, and the output end of the fourth motor 36 movably passes through the mounting plate 34. There are multiple sponge cleaning discs 37 and gears 38. Multiple sponge cleaning discs 37 are rotatably connected to the mounting plate 34, and multiple sponge cleaning discs 37 movably pass through the receiving box 35. Multiple gears 38 are fixedly connected to multiple sponge cleaning discs 37. The transmission toothed belt 39 is sleeved on the surface of multiple gears 38, and the transmission toothed belt 39 is connected to the multiple gears 38 in a transmission manner.

[0110] In this embodiment, the mounting plate 34 is for easy installation of the receiving box 35, and the receiving box 35 is for easy protection of the gear 38 and the transmission belt 39. The output end of the fourth motor 36 is started to rotate, and the rotation of the output end of the fourth motor 36 drives one of the sponge cleaning discs 37 to rotate. The rotation of the sponge cleaning disc 37 drives the corresponding gear 38 to rotate. The transmission cooperation between the gear 38 and the transmission belt 39 makes multiple gears 38 and sponge cleaning discs 37 rotate simultaneously. The simultaneous rotation of multiple sponge cleaning discs 37 facilitates the cleaning of both sides of the PU film.

[0111] Specifically, each cleaning mechanism also includes a mounting base 32 and a cylinder 33. The mounting base 32 is fixedly connected inside the cleaning box 1, and the cylinder 33 is mounted on the mounting base 32.

[0112] In this embodiment, the mounting base 32 is for the purpose of facilitating the installation of the cylinder 33, and the cylinder 33 is for the purpose of facilitating the movement of the mounting plate 34, thereby facilitating the adjustment of the position of the sponge cleaning disc 37.

[0113] Specifically, two first support plates 8 are fixedly connected to the side of the cleaning box 1, and an installation cylinder 9 is rotatably connected between the two first support plates 8. Four support legs 7 are fixedly connected to the bottom of the cleaning box 1. A drain pipe 5 is installed at the front end of the cleaning box 1, and a valve 6 is installed on the drain pipe 5. A third motor 28 is installed on the second support plate 22. The output end of the third motor 28 moves through the second support plate 22, and the output end of the third motor 28 is fixedly connected to the partition plate 24.

[0114] In this embodiment, the first support plate 8 is for easy rotational connection to the mounting cylinder 9, the mounting cylinder 9 is for easy installation of the PU film, the support leg 7 is for easy support of the cleaning box 1, the drain pipe 5 is for easy drainage, the valve 6 is for easy control of water discharge, and the third motor 28 is for easy rotation of the partition 24. The rotation of the partition 24 simultaneously drives the two clamping plates 31 to rotate, so as to wrap the PU film.

[0115] Specifically, a control panel 2 is installed at the front end of the cleaning box 1. The control panel 2 is electrically connected to the first motor 12, the water pump 19, the second motor 25, the third motor 28, the cylinder 33, and the fourth motor 36.

[0116] In this embodiment, the control panel 2 is for easy electrical connection with the first motor 12, water pump 19, second motor 25, third motor 28, cylinder 33 and fourth motor 36.

[0117] Working principle: When it is necessary to fix the PU film, first install the PU film on the mounting cylinder 9, then pull out one end of the PU film and pass it through the two first through holes 3. At this time, place one end of the PU film between the two clamping plates 31, and then simultaneously start the output ends of the two second motors 25 to rotate. The rotation of the output ends of the second motors 25 drives the bidirectional lead screw 26 to rotate. The rotation of the bidirectional lead screw 26 causes the two short nuts 27 to move inward or outward at the same time. When the bidirectional lead screw 26 rotates forward, the two short nuts 27 move inward simultaneously on the surface of the bidirectional lead screw 26. The movement of the two short nuts 27 moves the mounting block 29, which in turn moves the semi-circular plate 30 and clamping plate 31. The movement of the two clamping plates 31 clamps and fixes the PU film. Once the PU film is clamped, the second motor 25 can be turned off. When the PU film needs to be washed, the water pump 19 is started to pump water out of the water tank 17 and discharge it through the annular spray pipe 20. The water sprayed through the annular spray pipe 20 can wash both the top and bottom surfaces of the PU film. When the surface of the PU film needs to be cleaned, the output end of the third motor 28 is started. The third motor 28 rotates, causing the partition 24 to rotate. The rotation of the partition 24 causes the mounting frame 23 and the two semi-circular plates 30 to rotate, and the two semi-circular plates 30 cause the two clamping plates 31 to rotate, thus facilitating the wrapping of the PU film onto the surface of the clamping plates 31. At this time, the movement of the PU film and the water washing by the annular spray pipe 20 facilitate the cleaning of the PU film surface. Then, the extension ends of the two cylinders 33 are simultaneously activated, pushing the mounting plate 34 and the sponge cleaning disc 37 to move, thus facilitating the contact of multiple sponge cleaning discs 37 with the PU film. When multiple sponge cleaning discs 37 come into contact with the PU film, the cylinder 33 is closed, and the output ends of two fourth motors 36 are started to rotate. The rotation of the output ends of the fourth motors 36 drives one of the sponge cleaning discs 37 to rotate. The rotation of the sponge cleaning disc 37 drives the corresponding gear 38 to rotate. Through the transmission cooperation of the gear 38 and the transmission belt 39, multiple gears 38 and sponge cleaning discs 37 rotate simultaneously. The simultaneous rotation of multiple sponge cleaning discs 37 facilitates the cleaning of both sides of the PU film, thereby optimizing the convenience of cleaning the PU film.

[0118] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and its improved concept, should be covered within the scope of protection of the present invention.

Claims

1. A water-washable PU film production process, characterized in that, Includes the following steps: S1. Raw material preparation: Prepare polyurethane raw materials. Fillers, plasticizers, and antioxidants may also be added as needed. Raw material processing: The raw materials are chopped and dried to remove moisture and impurities. The purpose of pretreatment is to ensure the quality and uniformity of the raw materials. S2, Extrusion molding: S21. Feeding: The pre-treated PU film raw material is fed into the extruder through the feed port; S22. Melting: The raw material gradually melts and forms a melt in the extruder through heating and mechanical shearing. S23. Extrusion: The molten raw material is pushed into the die head by the screw of the extruder and extruded into shape through the die head's orifice; S24. Film Cooling: The extruded PU film is cooled and solidified rapidly by the cooling rollers. S3, Stretching: S31. Heating: The cooled and cured PU film is heated to a certain temperature by means of heating rollers or hot air; S32. Stretching: The heated PU film is stretched by stretching rollers or stretching mechanism to a certain proportion at a certain temperature. S33. Curing: The stretched PU film is cooled and cured rapidly by the cooling rollers. S4, Cooling: S41, Cooling Roller: The stretched PU film is cooled and solidified rapidly by the cooling roller. S42, Cooling air: Cooling air is blown onto the PU film to accelerate its cooling and curing; S5. Cleaning: The PU film is washed with water using a water washing device to clean the surface of the PU film. S6, Cutting: S61. Positioning: Position the PU film onto the cutting machine to ensure cutting accuracy; S62. Cutting: Cutting the PU film using a cutting blade or cutting mechanism; S63. Collection: Collect the cut PU film for the next step of packaging and use; S7. Packaging: S71. Winding: The cut PU film is wound into rolls using a winding machine for easy storage and transportation; S72. Packaging: Package the wound PU film to protect it from the influence of the external environment; The water washing device includes: Cleaning box (1); The first through hole (3) is provided in two parts, and the two first through holes (3) are respectively opened on the left and right sides of the cleaning box (1); The second through hole (4) is provided as two, and the two second through holes (4) are respectively opened on the front and rear sides of the cleaning box (1); A horizontal plate (13) is slidably connected inside the cleaning box (1); The semicircular plate (30) is configured in two sets, and both sets of the semicircular plate (30) are located on the outside of the cleaning box (1); Clamping plate (31), the clamping plate (31) is configured as two, and the two clamping plates (31) are respectively connected to two sets of semi-circular plates (30); A cleaning mechanism is provided inside a cleaning box (1); A clamping mechanism is disposed on the side end of the cleaning box (1); A water washing mechanism is provided on the cleaning box (1) and is connected to the horizontal plate (13); The washing mechanism includes a washing component and a moving component, both of which are mounted on a horizontal plate (13) and are connected to each other. The water washing assembly includes a water tank (17), a connecting pipe (18), a water pump (19), an annular spray pipe (20), and a connecting rod (21). The water tank (17) is mounted on a horizontal plate (13), the connecting pipe (18) is installed at the bottom of the water tank (17), the water pump (19) is installed on the connecting pipe (18), and the annular spray pipe (20) is installed at the drain outlet of the water pump (19). The cleaning mechanism is configured in two sets, both sets being housed within the cleaning box (1). Each set includes a mounting plate (34), a receiving box (35), a fourth motor (36), a sponge cleaning disc (37), a gear (38), and a transmission toothed belt (39). The mounting plate (34) is mounted on the cleaning box (1), the receiving box (35) is mounted on the mounting plate (34), and the fourth motor (36) is mounted on the mounting plate (34). The output end is movable through the mounting plate (34). The sponge cleaning disc (37) and gear (38) are both configured as multiple. The multiple sponge cleaning discs (37) are rotatably connected to the mounting plate (34), and the multiple sponge cleaning discs (37) are movable through the receiving box (35). The multiple gears (38) are fixedly connected to the multiple sponge cleaning discs (37). The transmission toothed belt (39) is sleeved on the surface of the multiple gears (38), and the transmission toothed belt (39) is connected to the multiple gears (38) in a transmission connection. The clamping mechanism is configured in two sets, both sets being located on the outside of the cleaning box (1). Each set of clamping mechanisms includes a second support plate (22), a mounting frame (23), a partition plate (24), a second motor (25), a two-way lead screw (26), a short nut (27), and a mounting block (29). The second support plate (22) is fixedly connected to the cleaning box (1), the mounting frame (23) is located at the side end of the cleaning box (1), the partition plate (24) is fixedly connected inside the mounting frame (23), and the partition plate (24) is rotatably connected to the second support plate (22). The second motor (25) 25) Installed on the mounting frame (23), and the output end of the second motor (25) moves through the mounting frame (23). The bidirectional lead screw (26) is rotatably connected inside the mounting frame (23), and the bidirectional lead screw (26) is fixedly connected to the output end of the second motor (25). The short nut (27) and the mounting block (29) are both set to two. The two short nuts (27) are threaded to the surface of the bidirectional lead screw (26). The two mounting blocks (29) are respectively fixedly connected to the two semicircular plates (30), and the two mounting blocks (29) are fixedly connected to the two short nuts (27).

2. The water-washable PU film production process according to claim 1, characterized in that: The moving assembly includes a displacement screw (10), a long nut (11), a first motor (12), a slider (14), a guide hole (15), and a guide rod (16). The displacement screw (10) is rotatably connected to the second through hole (4), and the long nut (11) is threaded onto the surface of the displacement screw (10). The first motor (12) is installed on the side of the cleaning box (1), and the output end of the first motor (12) moves through the cleaning box (1). The slider (14) is fixedly connected to the long nut (11). There are two sliders (14), which are fixedly connected to the front and rear sides of the horizontal plate (13) respectively. The two sliders (14) are slidably connected in the two second through holes (4). The long nut (11) is installed in the slider (14). The guide hole (15) is opened at the side end of the slider (14). The guide rod (16) is fixedly connected in the second through hole (4) and the guide rod (16) is slidably engaged with the guide hole (15).

3. The water-washable PU film production process according to claim 1, characterized in that: Each cleaning mechanism also includes a mounting base (32) and a cylinder (33), the mounting base (32) being fixedly connected inside the cleaning box (1), and the cylinder (33) being mounted on the mounting base (32).

4. The water-washable PU film production process according to claim 1, characterized in that: The cleaning box (1) has two first support plates (8) fixedly connected to its side end, and an installation cylinder (9) is rotatably connected between the two first support plates (8). The bottom of the cleaning box (1) is fixedly connected to four support legs (7). The front end of the cleaning box (1) is equipped with a drain pipe (5) and a valve (6) is installed on the drain pipe (5). A third motor (28) is installed on the second support plate (22). The output end of the third motor (28) moves through the second support plate (22) and is fixedly connected to the partition plate (24).

5. The water-washable PU film production process according to claim 1, characterized in that: The front end of the cleaning box (1) is equipped with a control panel (2), which is electrically connected to the first motor (12), water pump (19), second motor (25), third motor (28), cylinder (33) and fourth motor (36).

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