A polar film-forming device and a film-forming method

Abstract

The present invention belongs to the technical field of film forming processes, and particularly relates to a polar film forming device and a film forming method, including a screw extruder and a product film. A forming guide roller machine for extruding raw materials into a product film is arranged below the output end of the multi-channel extrusion device. A film scraping mechanism for smoothing the product film is arranged at one end of the forming guide roller machine away from the multi-channel extrusion device. A processing guide roller machine for cooling and trimming the product film is arranged at one end of the film scraping mechanism away from the forming guide roller machine. Pressure exhaust parts for discharging the gas in the molten material are installed on the top and side walls of the double-channel housing. The present invention can discharge the air inside the center of the molten material, solve the problem of center carbonization, avoid bubbles and holes in the product film, reduce the possibility of carbonization and hardening of the molten material, and can also smooth the product film during its transportation.

Description

Technical Field

[0001] The present invention belongs to the technical field of film-forming processes, and particularly relates to a polar film-forming device and a film-forming method. Background Art

[0002] Plastic films are made of polyvinyl chloride, polyethylene, polypropylene, polystyrene, and other resins, and are used for packaging and as a coating layer; plastic packaging and plastic packaging products are taking up an increasingly large share in the market. Especially composite plastic flexible packaging has been widely used in the fields of food, medicine, chemical industry, etc. Plastic film extruders are required in the production of plastic films.

[0003] Problems existing in the prior art:

[0004] During the film-forming process of existing films, during the online melting and extrusion of raw materials, in a high-temperature environment, the melting of materials and the evaporation of moisture in the raw materials will generate gas. When gas is generated, some gas will exist in the central part of the molten material. Then, during the extrusion process, under the action of hydraulic pressure, there is no gap in the molten material to conduct the gas out. As a result, the gas accumulates in the molten material for a long time. If the gas cannot be discharged in time, small bubbles will be formed inside the film product, which will seriously affect the quality of the film product.

[0005] In addition, during the formation of the molten material, the molten material in the center is surrounded by the surrounding molten material, and the heat conduction effect is worse closer to the center. If the position of the molten material in the center does not change, the heat will not be able to dissipate quickly, which may cause the molten material at the center to carbonize. The molten material with a high degree of carbonization is accompanied by a hardening process, which ultimately seriously affects the quality of the film product. In existing film-forming devices, there is no extrusion device that can discharge the air inside the center of the molten material and solve the problem of central carbonization at the same time. Summary of the Invention

[0006] The purpose of the present invention is to provide a polar film-forming device that can discharge the air inside the center of the molten material and solve the problem of central carbonization at the same time, avoid bubbles and holes in the product film, reduce the possibility of carbonization and hardening of the molten material, and can also smooth the product film during transportation.

[0007] The technical solution adopted by the present invention is specifically as follows:

[0008] A polar film-forming device includes a screw extruder and a product film. The output end of the screw extruder is provided with a multi-channel extrusion device for processing molten raw materials. Below the output end of the multi-channel extrusion device is a forming guide roller machine for extruding the raw materials into a product film. One end of the forming guide roller machine away from the multi-channel extrusion device is provided with a film scraping mechanism for smoothing the product film. One end of the film scraping mechanism away from the forming guide roller machine is provided with a processing guide roller machine for cooling and trimming the product film.

[0009] The multi-channel extrusion device includes a main framework. One end of the main framework is fixedly installed with a double-channel housing directly connected to the screw extruder. Inlet and outlet are respectively opened on the side walls at both ends of the double-channel housing, and the inlet is opened on the side of the double-channel housing close to the screw extruder.

[0010] The inside of the double-channel housing is provided with a segmented softening treatment component for separately softening the molten material. The segmented softening treatment component includes two silos rotatably installed inside the double-channel housing. Through holes for the molten material to pass through are opened on both side walls of the silo. Inflow branch channels and outflow branch channels for the molten material to flow are respectively opened on both sides inside the double-channel housing. The inflow branch channel is communicated with the inlet and is used for guiding the molten material into the two silos, while the outflow branch channel is communicated with the inlet and is used for guiding the molten material inside the silo out. Inner mesh cylinders are fixedly installed inside the silos. Circular screen meshes are fixedly embedded inside the through holes close to the inflow branch channel. Two motor housings are fixedly arranged on the outer wall of one side of the double-channel housing. Motors 1 are fixedly installed inside the motor housings. A baffle is fixedly installed at the output end of the motor 1. The baffle is rotatably arranged inside the inner mesh cylinder and is used for controlling the flow rate of the molten material entering the outflow branch channel.

[0011] Gas collection grooves are opened above the silos inside the double-channel housing. Gas guide pipes for discharging gas are opened at the tops of the gas collection grooves. Pressure exhaust parts for discharging the gas in the molten material are installed on the top and side walls of the double-channel housing. The pressure exhaust part includes a pneumatic tube for temporarily storing gas. A reverse U-shaped gas tube is fixedly connected to the middle of the outer wall of the pneumatic tube. The end of the reverse U-shaped gas tube is connected to the top end of the gas guide pipe. A pressure relief gas tube is fixedly connected to the top of the outer wall of the pneumatic tube. A gas valve for controlling the release of gas is installed at the end of the pressure relief gas tube. A pressure sensor for real-time detecting the air pressure inside the pneumatic tube is fixedly installed at the top end inside the pneumatic tube. A spring 1 is fixedly connected to the bottom end of the inner wall of the pneumatic tube. The top end of the spring 1 is connected to a piston.

[0012] The film scraping mechanism includes a plate structure, and a reciprocating smoothing component for smoothing the longitudinal wrinkles on the surface of the product film is arranged on the inclined upper surface of the plate structure; a support guide roller for assisting in transportation is movably installed at the top above the inclined upper part of the plate structure, and a lifting self-adjusting component for controlling the up and down movement of the support guide roller is arranged at the top above the inclined upper part of the plate structure.

[0013] The position of the piston should always be lower than the connection point of the inverted U-shaped air pipe and the air pressure pipe.

[0014] The inner wall of the air pressure pipe is provided with the standard pressure scale and the high pressure scale corresponding to the internal air pressure of the air pressure pipe at the position where the piston is located, and the high pressure scale is lower than the standard pressure scale. When the piston is at the high pressure scale position, the pressure sensor triggers and opens the air valve to release air and relieve pressure.

[0015] An outflow pipe is connected to the outlet of the outer wall of the double-channel housing, and a secondary flow divider for secondary mixing of the molten material is arranged in the middle of the outflow pipe. The inner part of the secondary flow divider is provided with a flow dividing channel in the shape of an "8". At the bottom of the other end of the main structure, an extrusion die head for extruding the molten material in the shape of a thin film is installed, and the extrusion die head is connected to the end of the outflow pipe.

[0016] A power shaft is rotatably installed inside the plate structure. A second motor is fixedly installed at the bottom of one side of the plate structure. A transmission component for driving the power shaft to rotate is assembled together at the output end of the second motor and one end of the power shaft. Helical gears I are fixedly installed on the surfaces at both ends of the power shaft.

[0017] The reciprocating smoothing component includes two double-groove rods and a driving rotating arm rotatably installed on the inclined upper surface of the plate structure. A middle groove and an end groove are respectively opened in the middle and at the end of the double-groove rod. A helical gear II is fixedly installed at the rotation center of the driving rotating arm through a rotating shaft. The helical gear II is located on the inclined lower surface of the plate structure and meshes with the helical gear I. The end of the driving rotating arm is fixedly connected with an end rod inserted into the middle groove.

[0018] A film scraping column is inserted through the end groove. The bottom end of the film scraping column is fixedly connected with a sliding block. A straight guide groove for guiding the movement of the sliding block is opened on the surface of the plate structure. A second spring is connected between the sliding block and the double-groove rod. The top end of the film scraping column is fixedly connected with a film scraping plate, and guide rods are fixedly connected to both ends of the film scraping plate.

[0019] The upper surface of the inclined plate structure is symmetrically and fixedly installed with guide frames for guiding the movement of the film scraping plate, and the guide frames are perpendicular to the surface of the plate structure. At both ends of the guide frames, travel grooves for inserting and guiding the movement of the guide rods are symmetrically formed. The travel grooves include a film scraping occurrence section at the top, a far - away section at the end of the film scraping occurrence section, a return section at the bottom, and an approaching section for connecting the film scraping occurrence section and the return section. The inclination angle of the far - away section is greater than that of the approaching section. Inside the guide frames and on one side of the top of the approaching section, inclined plane sliders are movably inserted, and a third spring is connected between the inclined plane sliders and the inner walls of the guide frames. At the upper - oblique top ends of both guide frames, auxiliary rollers are rotatably installed.

[0020] The lifting self - adjusting assembly includes a transfer rod and a straight - line connecting rod rotatably connected to the end of the transfer rod. The upper surface of the inclined plate structure is symmetrically and fixedly connected with swivel rods, and the transfer rod is movably sleeved on the surface of the swivel rods. The straight - line connecting rod is slidably installed straight on the top of the plate structure. At the other end of the transfer rod, two branch rods are provided, and the included angle between the two branch rods is an acute angle.

[0021] On both sides of the top of the upper - oblique part of the plate structure, end brackets and end conduits are provided, and the end brackets are located directly below the end conduits. Both ends of the support guide roller are rotatably installed with guide roller frames, and the bottom of the guide roller frames is slidably installed inside the end conduits. Inside the end of the end bracket, an end rotating rod is rotatably installed, and a cam is fixedly installed in the middle of the end rotating rod. The cam is in contact connection with the bottom end of the guide roller frame. One end of the end rotating rod is fixedly connected with a rotating arm, and the end of the straight - line connecting rod and the end of the rotating arm form a rotating connection.

[0022] A polar film - forming method, the specific steps are as follows:

[0023] S1: Put the film - making materials into the screw extruder, and under the processes of melting, fusing, and extrusion transportation in the screw extruder, the molten material is finally extruded into the double - flow channel housing.

[0024] S2: The molten material entering from the inlet will separately enter into two inflow branch channels, then sequentially pass through the circular screen and the side wall of the inner net cylinder and enter into the silo. Under the continuous extrusion of the molten material, the molten material will pass through the side wall of the inner net cylinder again and enter into the outflow branch channel, and finally enter into the outflow pipe from the outlet. During the process of the molten material passing through the circular screen and the inner net cylinder, under the action of the hollow - shaped circular screen and the inner net cylinder, the molten material will be dispersed and then polymerized. The dispersion process can prevent the molten material in the central part from being carbonized due to too high temperature, and the gas remaining in the molten material will also be separated out.

[0025] S3: After the gas remaining in the molten material is separated, it will move upward and eventually gather inside the gas collecting tank. In the process of molten material hydraulic pressure and continuous gas accumulation, the gas will enter the air pressure tube from the inverted U-shaped air pipe, and the air pressure inside the air pressure tube will gradually increase. In the process of continuously collecting gas, the piston will move from the standard pressure scale to the high pressure scale and continuously squeeze the spring one. When the piston reaches the high pressure scale, the pressure sensor at this time will also detect that the air pressure inside the air pressure tube has reached the preset air pressure value. Subsequently, the pressure sensor will start the air valve, and the pressure relief air pipe will be unblocked through the air valve and slowly released to the outside to achieve pressure relief. During the pressure relief process, the piston is reset to the standard pressure scale under the action of spring one, and the air pressure will also be reduced to the original value at this time, and then the air valve will be closed, and this process is used to achieve the work of exhausting gas. In addition, the inside of the air pressure tube is always maintained above a standard air pressure, and the existence of this standard air pressure is used to prevent the molten material from entering the air guide tube.

[0026] S4: Before passing through the outlet pipe, the molten material will first enter the diverter flow channel of the secondary diverter, and undergo a secondary separation and re-fusion process inside the diverter flow channel. The internal pipe of the diverter flow channel is narrow, so the hydraulic pressure of the molten material inside can be increased, thereby improving the fusion effect of the molten material. After the secondary fusion is completed, it is finally extruded from the extrusion die head to the inside of the forming guide roller machine, and is extruded by the guide roller of the forming guide roller machine and cooled to form a product film.

[0027] S5: Before the product film enters the processing guide roller machine, it will first pass through the scraping mechanism. During the process, Motor 2 works continuously to rotate the driving arm, which drives the double-grooved rod to rotate reciprocatingly. Then, the two double-grooved rods drive the two scraping plates to move reciprocatingly in the opposite direction. When the scraping plate moves from the middle of the product film to one side, the scraping plate just fits the lower surface of the product film, and the guide rods at both ends will move inside the scraping section, and the effect of smoothing the product film will be achieved during the movement; and when the guide rods enter the distance section, the return section and the approach section in turn, the scraping plate will not contact the product film during this process.

[0028] S6: When the guide rod moves inside the scraping section, the end of the double-groove rod will contact and squeeze a branch rod, thereby driving the transfer rod to rotate, and the straight connecting rod connected to the end of the transfer rod will move in a straight line and drive the rotating arm to rotate at the same time. At the same time, the cam will also rotate, and the protruding part of the cam will be offset from the bottom of the guide roller frame. At this time, the guide roller frame will move downward, and finally the support guide roller will be moved downward, so that in the process of smoothing the product film, the support guide roller will be away from the product film to avoid the support guide roller hindering the smoothing process. When the double-groove rod rotates and resets, its end will contact another branch rod and reset the transfer rod. After resetting, the support guide roller can contact the product film again to complete the work of assisting the product film transportation.

[0029] The technical effects achieved by the present invention are:

[0030] (1) In the present invention, during the process of the molten material entering the interior of the silo, under the action of the hollow circular sieve mesh and the inner mesh cylinder, the molten material will be dispersed and finally aggregated in the outflow branch channels. During the dispersion process, the molten material originally located in the center will directly contact the circular sieve mesh or the inner mesh cylinder, and heat conduction will be achieved during the contact process, thereby reducing the temperature of the molten material at the center. Furthermore, it is possible to avoid the situation where the molten material at the center is carbonized due to excessive temperature, reduce the possibility of the molten material being carbonized and hardened, and ensure the quality of the product film.

[0031] (2) In the present invention, the air originally generated and remaining in the molten material due to material melting and evaporation of moisture in the raw materials will be directly separated from the molten material. In addition, since the aperture of the through-hole is larger than the aperture of the outflow branch channel, when the molten material enters between the outflow branch channels, the separated gas is more likely to be discharged from the gap between the silo and the double-flow channel housing. This process can reduce the presence of small bubbles inside the product film and also reduce the possibility of the product film having holes.

[0032] (3) In the present invention, during the process of the molten material passing through the outflow pipe, it will first enter the diversion flow channels of the secondary diverter. Since the cross-sectional shape of the diversion flow channels is an "8" shape, the molten material will undergo a process of secondary separation and re-fusion inside the diversion flow channels. And because the diversion flow channel pipes are narrow, the hydraulic pressure of the molten material during internal flow will be increased, and under the action of a larger hydraulic pressure, the fusion effect of the molten material is improved.

[0033] (4) In the present invention, after the gas remaining in the molten material is separated, it will enter the pressure pipe for collection. When the internal pressure of the pressure pipe increases to a preset value, the pressure can be relieved by releasing gas through the gas valve. During this process, the piston will move with the change of the pressure, and it can be adjusted in time to avoid sucking in the molten material during pressure relief. By maintaining the change of the pressure, the effect of exhausting gas is achieved, and the gas separated from the molten material can be discharged from the multi-channel extrusion device, realizing the separation of gas during the extrusion process of the molten material. In addition, the internal pressure of the pressure pipe is always maintained above a standard pressure, and the existence of this standard pressure can be used to prevent the molten material from entering the air duct.

[0034] (5) In the present invention, by continuously smoothing the product film from the middle to one side with two film scraping plates, during this process, the work of smoothing the product film can be completed during the transportation of the product film, thereby solving the problem of longitudinal stripes occurring in the product film. By smoothing the product film, the part where longitudinal stripes occur can be prevented from being extruded and shaped by the subsequent guide rollers, ensuring that the product film can be in a good flat state during the final winding.

[0035] (6) In the present invention, during the process of the film scraping plate moving outward to smooth the product film, the guide roller frame will move downward and away from the product film; while when the double-groove rod rotates and resets, the supporting guide roller can come into contact with the product film again and assist in the transportation of the product film. During this process, the supporting guide roller is away from the product film when the film scraping plate smooths the product film, thus avoiding the supporting guide roller from hindering the smoothing process and ensuring that the product film can be fully smoothed. In addition, the processes of the supporting guide roller moving away and resetting are both realized by using the kinetic energy when the double-groove rod reciprocates and deflects, thus no additional power consumption will be generated, and no other motor equipment needs to be invested, reducing the manufacturing cost and energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 is the process flow chart of the film forming part provided by the embodiment of the present invention;

[0037] Figure 2 is the structural diagram of the multi-channel extrusion device provided by the embodiment of the present invention;

[0038] Figure 3 is the cross-sectional structural diagram of the double-channel housing provided by the embodiment of the present invention;

[0039] Figure 4 is Figure 3 the partial enlarged structural diagram at A in

[0040] Figure 5 is the assembly and disassembly diagram of the silo provided by the embodiment of the present invention;

[0041] Figure 6 is the structural diagram of the pressure type exhaust part provided by the embodiment of the present invention;

[0042] Figure 7 is the usage schematic diagram of the pressure type exhaust part provided by the embodiment of the present invention;

[0043] Figure 8 is the three-dimensional structural diagram of the film scraping mechanism provided by the embodiment of the present invention;

[0044] Figure 9 is the driving structure schematic diagram of the film scraping plate provided by the embodiment of the present invention;

[0045] Figure 10 is the driving structure schematic diagram of the film scraping column provided by the embodiment of the present invention;

[0046] Figure 11 is the structural diagram of half of the guide frame provided by the embodiment of the present invention;

[0047] Figure 12 is the moving route diagram of the film scraping plate provided by the embodiment of the present invention;

[0048] Figure 13 is a schematic diagram of the lifting and guiding structure of the supporting guide roller provided by the embodiment of the present invention;

[0049] Figure 14 is a schematic diagram of the guiding structure of the guide roller frame provided by the embodiment of the present invention.

[0050] In the attached drawings, the list of components represented by each reference numeral is as follows:

[0051] 1. Screw extruder; 2. Multi-channel extrusion device; 201. Main frame; 202. Double-channel housing; 203. Motor housing; 204. Inlet; 205. Outlet; 206. Inflow branch; 207. Outflow branch; 208. Silo; 209. Through hole; 210. Inner mesh cylinder; 211. Circular screen; 212. Baffle; 213. Gas collecting groove; 214. Air duct; 215. Outflow pipe; 216. Secondary diverter; 217. Diverting channel; 218. Extrusion die head; 3. Pressure type exhaust part; 301. Pneumatic tube; 302. Inverted U-shaped air tube; 303. Pressure relief air tube; 304. Air valve; 305. Pressure sensor; 306. Spring I; 307. Piston; 4. Forming guide roller machine; 5. Film scraping mechanism; 501. Plate frame; 502. Motor II; 503. Transmission component; 504. Power shaft; 505. Helical gear I; 506. Double-groove rod; 507. Middle groove; 508. End groove; 509. Driving swing arm; 510. Helical gear II; 511. End rod; 512. Film scraping column; 513. Slide block; 514. Spring II; 515. Film scraping plate; 516. Guide rod; 517. Straight guide groove; 518. Guide frame; 519. Film scraping occurrence section; 520. Away section; 521. Return section; 522. Approaching section; 523. Inclined plane slide block; 524. Auxiliary roller; 525. End support; 526. End duct; 527. Guide roller frame; 528. Supporting guide roller; 529. Rotating center rod; 530. Connecting rod; 531. Branch rod; 532. Straight connecting rod; 533. End rotating rod; 534. Cam; 535. Swing arm; 6. Processing guide roller machine; 7. Product film;

[0052] H. Standard pressure scale; H1. High pressure scale. Detailed implementation manners

[0053] In order to make the purpose and advantages of the present invention clearer, the present invention will be specifically described below in conjunction with embodiments. It should be understood that the following text is only used to describe one or several specific implementation manners of the present invention, and does not strictly limit the scope of protection specifically claimed by the present invention.

[0054] As Figures 1-14As shown, a polar film-forming device includes a screw extruder 1 and a product film 7. A multi-channel extrusion device 2 for processing molten raw materials is provided at the output end of the screw extruder 1. A forming guide roller machine 4 for extruding the raw materials into the product film 7 is provided below the output end of the multi-channel extrusion device 2. A film scraping mechanism 5 for smoothing the product film 7 is provided at one end of the forming guide roller machine 4 away from the multi-channel extrusion device 2. A processing guide roller machine 6 for cooling and trimming the product film 7 is provided at one end of the film scraping mechanism 5 away from the forming guide roller machine 4.

[0055] Embodiment 1

[0056] Referring to the appendix Figure 2 and Figure 3 As shown in the appendix, the multi-channel extrusion device 2 includes a main framework 201. A double-channel housing 202 directly connected to the screw extruder 1 is fixedly installed at one end of the main framework 201. An inlet 204 and an outlet 205 are respectively opened on the side walls at both ends of the double-channel housing 202, and the inlet 204 is opened on the side of the double-channel housing 202 close to the screw extruder 1.

[0057] Referring to the appendix Figure 3 、 Figure 4 and Figure 5 As shown in the appendix, a segmented softening treatment component for separately softening the molten material is arranged inside the double-channel housing 202. The segmented softening treatment component includes two silos 208 rotatably installed inside the double-channel housing 202, and through holes 209 through which the molten material passes are opened on both side walls of the silo 208. Inflow branch channels 206 and outflow branch channels 207 for the molten material to flow are respectively opened on both sides inside the double-channel housing 202. The inflow branch channel 206 is communicated with the inlet 204 and is used for introducing the molten material into the two silos 208, and the outflow branch channel 207 is communicated with the inlet 204 and is used for discharging the molten material inside the silo 208. Inner mesh cylinders 210 are fixedly installed inside the silos 208. Circular screen meshes 211 are fixedly embedded inside the through holes 209 close to the inflow branch channel 206. Two motor housings 203 are fixedly arranged on the outer wall of one side of the double-channel housing 202, and motors 1 are fixedly installed inside the motor housings 203. A baffle 212 is fixedly installed at the output end of the motor 1, and the baffle 212 is rotatably arranged inside the inner mesh cylinder 210 and is used for controlling the flow rate of the molten material entering the outflow branch channel 207. The aperture of the through hole 209 is larger than the aperture of the outflow branch channel 207.

[0058] According to the above structure, the molten material will enter into the two inflow branch channels 206 from the inlet 204. Immediately afterwards, it will sequentially pass through the circular screen 211 and the side wall of the inner cylinder 210 and enter into the silo 208. Under the continuous extrusion of the molten material, the molten material will pass through the side wall of the inner cylinder 210 again and enter into the outflow branch channel 207, and finally enter into the outflow pipe 215 from the outlet 205. Under the action of the hollow circular screen 211 and the inner cylinder 210, the molten material will be dispersed and then aggregated in the outflow branch channel 207. During the dispersion process, the molten material originally located in the center will directly contact the circular screen 211 or the inner cylinder 210, and heat conduction will be realized during the contact process, so as to reduce the temperature of the molten material at the center, and further avoid the situation that the molten material at the center is carbonized due to too high temperature, reduce the possibility of the molten material being carbonized and hardened, and ensure the quality of the product film 7;

[0059] Meanwhile, the air that was originally generated due to the melting of the material and the evaporation of the moisture in the raw material and remained inside the molten material will be directly separated from the molten material. In addition, since the aperture of the through hole 209 is larger than the aperture of the outflow branch channel 207, when the molten material enters between the outflow branch channels 207, the separated gas is more likely to be discharged from the gap between the silo 208 and the double-channel housing 202. This process can reduce the existence of small bubbles inside the product film 7 and at the same time reduce the possibility of the product film 7 having holes;

[0060] Finally, start the first motor inside the motor housing 203. Its operation can rotate the baffle 212, so as to control the flow rate of the molten material entering into the outflow branch channel 207.

[0061] Refer to the appendix Figure 3 At the outlet 205 on the outer wall of the double-channel housing 202, there is an outflow pipe 215 connected. And a secondary diverter 216 for secondary mixing of the molten material is arranged in the middle of the outflow pipe 215. And a diversion flow channel 217 in the shape of an "8" is arranged inside the secondary diverter 216. At the bottom of the other end of the main frame 201, an extrusion die head 218 for extruding the molten material in the shape of a thin film is installed, and the extrusion die head 218 is connected to the end of the outflow pipe 215.

[0062] According to the above structure, during the process of the molten material passing through the outflow pipe 215, it will first enter into the diversion flow channel 217 of the secondary diverter 216. Since the cross-sectional shape of the diversion flow channel 217 is in the shape of an "8", the molten material will undergo a process of secondary separation and re-fusion inside the diversion flow channel 217. And since the pipe of the diversion flow channel 217 is narrow, the hydraulic pressure of the molten material during internal flow will be increased. Under the action of the larger hydraulic pressure, the fusion effect of the molten material is improved.

[0063] The working principle of the present invention is as follows: during the melting, fusing, and extrusion transportation processes of raw materials in the screw extruder 1, the molten material is finally extruded into the internal of the double-channel housing 202. The molten material entering from the inlet 204 will separately enter into the two inflow branch channels 206, then sequentially pass through the circular screen 211 and the side wall of the inner cylinder 210 and enter into the silo 208. Due to the continuous injection of the molten material, under the extrusion of the molten material, the molten material will pass through the side wall of the inner cylinder 210 again and enter into the outflow branch channel 207, and finally enter into the outflow pipe 215 from the outlet 205;

[0064] Among them, during the process of the molten material passing through the circular screen 211 and the inner cylinder 210, under the action of the hollow-shaped circular screen 211 and the inner cylinder 210, the molten material will be dispersed, and then polymerized in the outflow branch channel 207. During the dispersion process, the molten material originally located inside will directly contact the circular screen 211 or the inner cylinder 210, and heat conduction will be achieved during the contact process, thereby avoiding the situation that the molten material in the central part is carbonized due to too high temperature. At the same time, the air that was originally generated and remained in the molten material due to material melting and evaporation of moisture in the raw material will be directly separated from the molten material;

[0065] During the process of the molten material passing through the outflow pipe 215, it will first enter into the diversion channel 217 of the secondary diverter 216. Since the cross-sectional shape of the diversion channel 217 is "8", the molten material will undergo a process of secondary separation and re-fusion in the diversion channel 217. Also, due to the narrow pipe of the diversion channel 217, the hydraulic pressure of the molten material inside can be increased, thereby improving the effect of molten material fusion. After the secondary fusion is completed, the molten material will finally enter into the extrusion die head 218 and be extruded from the extrusion die head 218 into the forming roller machine 4, and the product film 7 is formed after being extruded and cooled by the rollers of the forming roller machine 4.

[0066] Embodiment 2

[0067] Refer to the appendix Figure 4 and Figure 6, gas collection grooves 213 are provided inside the double-flow channel housing 202 directly above the silo 208, and air guide pipes 214 for discharging gas are provided at the tops of the gas collection grooves 213. Pressure exhaust parts 3 for discharging the gas in the molten material are installed on both the top and the side walls of the double-flow channel housing 202. The pressure exhaust part 3 includes a pneumatic tube 301 for temporarily storing gas. An inverted U-shaped air tube 302 is fixedly connected to the middle of the outer wall of the pneumatic tube 301, and the end of the inverted U-shaped air tube 302 is connected to the top end of the air guide pipe 214. A pressure relief air tube 303 is fixedly connected to the top of the outer wall of the pneumatic tube 301, and a gas valve 304 for controlling the release of gas is installed at the end of the pressure relief air tube 303. A pressure sensor 305 for real-time detecting the air pressure inside the pneumatic tube 301 is fixedly installed at the top end inside the pneumatic tube 301. A first spring 306 is fixedly connected to the bottom end of the inner wall of the pneumatic tube 301, and a piston 307 is connected to the top end of the first spring 306.

[0068] According to the above structure, after the gas remaining in the molten material is separated, it will move upward and gather in the gap, and finally gather inside the gas collection groove 213. In addition, during the process of the molten material pressure and the continuous gathering of gas, the gas will enter the inside of the pneumatic tube 301 through between the inverted U-shaped air tubes 302 for collection. Therefore, the air pressure inside the pneumatic tube 301 also gradually increases.

[0069] Refer to the appendix Figure 7 , the position of the piston 307 should always be lower than the connection between the inverted U-shaped air tube 302 and the pneumatic tube 301. The inner wall of the pneumatic tube 301 is provided with the standard pressure scale H and the high pressure scale H1 corresponding to the air pressure inside the pneumatic tube 301 at the position where the piston 307 is located, and the high pressure scale H1 is lower than the standard pressure scale H. When the piston 307 is at the high pressure scale H1 position, the pressure sensor 305 will trigger and open the gas valve 304 to release pressure.

[0070] According to the above structure, during the continuous process of collecting gas, the piston 307 will move from the standard pressure scale H to the high pressure scale H1, and continuously squeeze the first spring 306 during the process. When the piston 307 reaches the high pressure scale H1, the pressure sensor 305 at this time will also detect that the air pressure inside the pneumatic tube 301 reaches the preset peak air pressure value. Subsequently, the pressure sensor 305 will start the gas valve 304, make the pressure relief air tube 303 unblocked through the gas valve 304 and slowly discharge gas to the outside, thereby realizing the pressure relief work and reducing the air pressure inside the pneumatic tube 301 to the original value. By using this way of maintaining the air pressure change, the exhaust effect is realized, and the gas separated from the molten material is discharged from the multi-channel extrusion device 2. The gas separation work can be completed during the extrusion process of the molten material. In addition, the air pressure inside the pneumatic tube 301 is always maintained above a standard air pressure, and the existence of this standard air pressure can be used to prevent the molten material from entering the air guide pipe 214.

[0071] The working principle of the present invention is as follows: After the gas remaining in the molten material is separated, it will move upward and gather, and finally gather inside the gas collecting tank 213. In addition, during the process of the molten material pressure and the continuous gathering of gas, the gas will enter the inside of the pressure tube 301 between the inverted U-shaped gas pipes 302 for collection. Therefore, the internal pressure of the pressure tube 301 also gradually increases;

[0072] During the continuous gas collection process, the piston 307 will move from the standard pressure scale H to the high pressure scale H1, and continuously compress the first spring 306 during the process. When the piston 307 reaches the high pressure scale H1, the pressure sensor 305 at this time will also simultaneously detect that the internal pressure of the pressure tube 301 reaches the preset peak pressure value. Subsequently, the pressure sensor 305 will activate the air valve 304, and through the air valve 304, the pressure relief air pipe 303 will be dredged and slowly release air to the outside, thereby realizing the pressure relief work. During the pressure relief process, the piston 307 will return to the standard pressure scale H under the action of the first spring 306, and at this time the pressure will also drop to the original value. Subsequently, the air valve 304 will close, and this process is used to realize the work of discharging gas. In addition, the internal pressure of the pressure tube 301 is always maintained above a standard pressure, and the existence of this standard pressure is used to prevent the molten material from entering the inside of the air guide tube 214.

[0073] Embodiment III

[0074] Refer to the attached Figure 8 , the film scraping mechanism 5 includes a plate structure 501. A power shaft 504 is rotatably installed inside the plate structure 501. A second motor 502 is fixedly installed at the bottom of one side of the plate structure 501, and a transmission assembly 503 for driving the rotation of the power shaft 504 is assembled together at the output end of the second motor 502 and one end of the power shaft 504. Helical gears 505 are fixedly installed on the surfaces of both ends of the power shaft 504.

[0075] Refer to the attached Figure 8 、 Figure 9 and Figure 10, a reciprocating smoothing assembly for smoothing the longitudinal wrinkles on the surface of the product film 7 is provided on the obliquely upper surface of the plate structure 501. The reciprocating smoothing assembly includes two double-groove rods 506 rotatably mounted on the obliquely upper surface of the plate structure 501 and a driving swing arm 509. A middle groove 507 and an end groove 508 are respectively formed in the middle and the end of the double-groove rod 506. A second bevel gear 510 is fixedly mounted at the rotation center of the driving swing arm 509 through a rotating shaft. The second bevel gear 510 is located on the obliquely lower surface of the plate structure 501 and meshes with the first bevel gear 505. An end rod 511 inserted into the middle groove 507 is fixedly connected to the end of the driving swing arm 509; a film scraping column 512 is inserted through the end groove 508. A slider 513 is fixedly connected to the bottom end of the film scraping column 512. A straight guide groove 517 for guiding the movement of the slider 513 is formed on the surface of the plate structure 501. A second spring 514 is connected between the slider 513 and the double-groove rod 506. A film scraping plate 515 is fixedly connected to the top end of the film scraping column 512, and guide rods 516 are fixedly connected to both ends of the film scraping plate 515.

[0076] Refer to the appendix Figure 11 , guiding frames 518 for guiding the movement of the film scraping plate 515 are symmetrically and fixedly mounted on the obliquely upper surface of the plate structure 501, and the guiding frames 518 are perpendicular to the surface of the plate structure 501. Distance grooves for inserting and guiding the movement of the guide rods 516 are symmetrically formed inside both ends of the guiding frames 518. The distance grooves include a film scraping occurrence section 519 located at the top, a far section 520 located at the end of the film scraping occurrence section 519, a return section 521 located at the bottom, and an approaching section 522 for connecting the film scraping occurrence section 519 and the return section 521. The inclination angle of the far section 520 is greater than that of the approaching section 522. An inclined surface slider 523 is movably inserted inside the guiding frame 518 and on the top side of the approaching section 522, and a third spring is connected between the inclined surface slider 523 and the inner wall of the guiding frame 518. Auxiliary rollers 524 are rotatably mounted at the top ends obliquely above the two guiding frames 518.

[0077] According to the above structure, the motor 2 502 works to drive the rotating arm 509 to rotate, and then the driving rotating arm 509 is driven to rotate through the meshing of the bevel gear 1 505 and the bevel gear 2 510. Since the end rod 511 is inserted into the middle groove 507, the driving rotating arm 509 can drive the double-grooved rod 506 to rotate reciprocatingly. Therefore, the two double-grooved rods 506 will drive the two scraping plates 515 at their ends to move reciprocatingly in the opposite direction. When the scraping plate 515 moves from the middle of the product film 7 to one side, the scraping plate 515 just fits with the lower surface of the product film 7, thereby achieving the effect of smoothing the product film 7. In the resetting process, the scraping plate 515 will move away from the product film 7. In the scraping process, the guide rod 516 moves inside the scraping section 519. When the guide rod 516 approaches the distance section 520, under the action of the spring 2 514, the guide rod 516 will enter the distance section 5 20, and the scraper plate 515 will move away from the product film 7 at the same time, and the guide rod 516 will then enter the distance section 520, the return section 521 and the approach section 522 in turn. When the guide rod 516 moves to the top of the approach section 522, the inclined slider 523 is retracted into the guide frame 518 under the oiling of the guide rod 516, and at the same time squeezes the spring three. When the guide rod 516 completely passes through the approach section 522, the inclined slider 523 extends, thereby ensuring that the guide rod 516 returns to the scraper section 519. This process is realized during the transportation of the product film 7. The work of smoothing the product film 7 is completed, thereby solving the problem of longitudinal stripes on the product film 7. By smoothing the product film 7, the part with longitudinal stripes is prevented from being squeezed and shaped by the subsequent guide rollers, thereby ensuring that the product film 7 can be in a good flat state when it is finally rolled up.

[0078] Refer to the attached Figure 13 and Figure 14 A support guide roller 528 for auxiliary transportation is movably installed at the top obliquely above the plate frame 501, and a lifting and self-adjusting component for controlling the up and down movement of the support guide roller 528 is provided at the top obliquely above the plate frame 501. The lifting and self-adjusting component includes a transfer rod 530 and a straight-moving connecting rod 532 rotatably connected to the end of the transfer rod 530. A rotating rod 529 is symmetrically fixedly connected to the oblique upper surface of the plate frame 501, and the transfer rod 530 is movably sleeved on the surface of the rotating rod 529. The straight-moving connecting rod 532 is straightly slidably installed on the top of the plate frame 501. Two branch rods 531 are provided at the other end of the transfer rod 530, and the angle between the two branch rods 531 is an acute angle.

[0079] Refer to the attached Figure 13 and Figure 14An end bracket 525 and an end guide tube 526 are provided on both sides of the top obliquely above the plate frame 501, and the end bracket 525 is located directly below the end guide tube 526. Guide roller frames 527 are rotatably installed at both ends of the support guide roller 528, and the bottom of the guide roller frame 527 is slidably installed inside the end guide tube 526. An end rotating rod 533 is rotatably installed inside the end of the end bracket 525, and a cam 534 is fixedly installed in the middle of the end rotating rod 533. The cam 534 is in contact with the bottom end of the guide roller frame 527, and one end of the end rotating rod 533 is fixedly connected to a rotating arm 535, and the end of the straight-moving connecting rod 532 is rotatably connected to the end of the rotating arm 535.

[0080] According to the above structure, when the scraper plate 515 moves outward to smooth the product film 7, the end of the double-grooved rod 506 will contact and squeeze a branch rod 531, thereby driving the transfer rod 530 to rotate, and the straight connecting rod 532 connected to the end of the transfer rod 530 will move in a straight line and simultaneously drive the rotating arm 535 to rotate. At the same time, the cam 534 will also rotate, and the raised part of the cam 534 will be offset from the bottom of the guide roller frame 527. At this time, the guide roller frame 527 will move downward, and finally the support guide roller 528 will move downward; and when the double-grooved rod 506 rotates and resets, its end will contact and squeeze another branch rod 531 The transfer rod 530 is touched and reset to rotate. After resetting, the support guide roller 528 can contact the product film 7 again and assist in the transportation of the product film 7. This process allows the support guide roller 528 to move away from the product film 7 while the scraper plate 515 is smoothing the product film 7, thereby preventing the support guide roller 528 from obstructing the smoothing process and ensuring that the product film 7 can be fully smoothed. In addition, the process of the support guide roller 528 moving away from and resetting is achieved by utilizing the kinetic energy of the reciprocating deflection of the double-grooved rod 506, thereby not generating additional power consumption and not requiring the investment of other motor equipment, thereby reducing production costs and energy consumption.

[0081] The working principle of the present invention is as follows: the product film 7 will first pass through the film scraping mechanism 5 before entering the processing guide roller machine 6. During the process, the motor 2 502 keeps working and drives the driving arm 509 to rotate through the transmission assembly 503, and then drives the driving arm 509 to rotate through the meshing of the bevel gear 1 505 and the bevel gear 2 510. Since the end rod 511 is inserted into the middle groove 507, the driving arm 509 can drive the double-grooved rod 506 to reciprocate, and the two double-grooved rods 506 will drive the two film scraping plates 515 at the ends thereof to reciprocate in the opposite direction.

[0082] When the film scraping plate 515 moves from the middle of the product film 7 to one side, the film scraping plate 515 just fits with the lower surface of the product film 7, and the guide rods 516 at both ends of the film scraping plate 515 move inside the film scraping section 519, and the effect of smoothing the product film 7 is achieved during the movement; when the guide rod 516 approaches the distance section 520, under the action of the spring 2 514, the guide rod 516 will enter the distance section 520 and the film scraping plate 515 will move away from the product film 7 at the same time. When the guide rod 516 moves to the top of the approaching section 522, the inclined slider 523 is retracted into the guide frame 518 under the oiling of the guide rod 516, and the spring 3 is squeezed at the same time. When the guide rod 516 completely passes through the approaching section 522, the inclined slider 523 extends, so that the guide rod 516 can return to the inside of the film scraping section 519. The specific movement route of the film scraping plate 515 is as follows: Figure 12 As shown;

[0083] When the guide rod 516 moves inside the scraping section 519, the end of the guide rod 516 will contact and squeeze a branch rod 531, thereby driving the transfer rod 530 to rotate, and the straight connecting rod 532 connected to the end of the transfer rod 530 will move in a straight line and simultaneously drive the rotating arm 535 to rotate. At the same time, the cam 534 will also rotate, and the raised part of the cam 534 will be offset from the bottom of the guide roller frame 527. At this time, the guide roller frame 527 will move downward, and finally the support guide roller 528 will move downward, so that in the process of smoothing the product film 7, the support guide roller 528 will be away from the product film 7, thereby avoiding the support guide roller 528 from obstructing the smoothing process, and when the guide rod 516 rotates and resets, its end will contact another branch rod 531 and reset the transfer rod 530. After resetting, the support guide roller 528 can contact the product film 7 again to complete the auxiliary product film 7 transportation to work.

[0084] A polar film forming method, the specific steps are as follows:

[0085] S1: Put the film making material into the screw extruder 1, and under the melting, fusion and extrusion transportation process of the screw extruder 1, the molten material is finally squeezed into the double-channel housing 202;

[0086] S2: The molten material entering from the inlet 204 will separately enter the two inflow branch channels 206, then sequentially pass through the circular sieve 211 and the side wall of the inner cylinder 210 and enter the inside of the silo 208. Under the continuous extrusion of the molten material, the molten material will pass through the side wall of the inner cylinder 210 again and enter the outflow branch channel 207, and finally enter the outflow pipe 215 from the outlet 205. During the process of the molten material passing through the circular sieve 211 and the inner cylinder 210, under the action of the hollow circular sieve 211 and the inner cylinder 210, the molten material will be dispersed and then reaggregated. The dispersion process can prevent the molten material in the central part from being carbonized due to excessive temperature, and the gas remaining in the molten material will also be separated out;

[0087] S3: After the gas remaining in the molten material is separated, it will move upward and finally accumulate inside the gas collecting tank 213. During the process of the hydraulic pressure of the molten material and the continuous accumulation of the gas, the gas will enter the pressure pipe 301 from the inverted U-shaped gas pipe 302, and the internal pressure of the pressure pipe 301 will gradually increase. During the continuous collection of the gas, the piston 307 will move from the standard pressure scale H to the high-pressure scale H1 and continuously compress the first spring 306. When the piston 307 reaches the high-pressure scale H1, the pressure sensor 305 at this time will also detect that the internal pressure of the pressure pipe 301 reaches the preset pressure value. Subsequently, the pressure sensor 305 will activate the air valve 304, and through the air valve 304, the pressure relief air pipe 303 will be dredged and slowly release gas to the outside to achieve the pressure relief work. During the pressure relief process, the piston 307 will reset to the standard pressure scale H under the action of the first spring 306, and at this time the air pressure will also drop to the original value. Immediately afterwards, the air valve 304 will close, and this process is used to achieve the work of discharging gas. In addition, the internal pressure of the pressure pipe 301 always maintains above a standard air pressure, and the existence of this standard air pressure is used to prevent the molten material from entering the gas guide pipe 214;

[0088] S4: Before the molten material passes through the outflow pipe 215, it will first enter the diversion flow channel 217 of the secondary diverter 216 and undergo a secondary separation and re-fusion process inside the diversion flow channel 217. The pipes inside the diversion flow channel 217 are narrow, so the hydraulic pressure of the molten material inside can be increased, thereby improving the effect of molten material fusion. After the secondary fusion is completed, it will finally be extruded from the extrusion die head 218 into the forming roller machine 4, and after being extruded and cooled by the rollers of the forming roller machine 4, a product film 7 is formed;

[0089] S5: Before the product film 7 enters the inside of the processing guide roller machine 6 again, it will first pass through the film scraping mechanism 5. During this process, the second motor 502 keeps working to rotate the driving swing arm 509. The driving swing arm 509 drives the double-slot rod 506 to reciprocate and rotate. Then, the two double-slot rods 506 drive the two film scraping plates 515 to reciprocate in opposite directions. When the film scraping plate 515 moves from the middle of the product film 7 to one side, the film scraping plate 515 just fits the lower surface of the product film 7, and the guide rods 516 at both ends thereof will move inside the film scraping occurrence section 519. During the movement, the effect of smoothing the product film 7 is achieved; when the guide rods 516 enter the inside of the far section 520, the return section 521, and the approaching section 522 in sequence, the film scraping plate 515 will not contact the product film 7 during this process.

[0090] S6: During the process of the guide rod 516 moving inside the film scraping occurrence section 519, the end of the double-slot rod 506 will contact and squeeze a branch rod 531, thereby driving the transfer rod 530 to rotate. The straight connecting rod 532 connected to the end of the transfer rod 530 will move linearly and drive the swing arm 535 to rotate at the same time. Meanwhile, the cam 534 will also rotate. The protruding part of the cam 534 will be staggered from the bottom of the guide roller frame 527. At this time, the guide roller frame 527 will move downward, and finally the supporting guide roller 528 is moved downward, so that during the process of smoothing the product film 7, the supporting guide roller 528 is far away from the product film 7 to avoid the supporting guide roller 528 from hindering the smoothing process. When the double-slot rod 506 rotates and resets, its end will contact another branch rod 531 and cause the transfer rod 530 to reset and rotate. After resetting, the supporting guide roller 528 can contact the product film 7 again to complete the auxiliary transportation of the product film 7 to work.

[0091] The above is only the preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present invention, several improvements and retouches can be made, and these improvements and retouches should also be regarded as the protection scope of the present invention. The structures, devices, and operation methods not specifically described and explained in the present invention are implemented according to the conventional means in the art without special description and limitation.

Claims

1. A polar film-forming device, comprising a screw extruder (1) and a product film (7). Characterized in that: A multi-channel extrusion device (2) for processing molten raw materials is arranged at the output end of the screw extruder (1). A forming guide roller machine (4) for extruding the raw materials into a product film (7) is arranged below the output end of the multi-channel extrusion device (2). A film scraping mechanism (5) for smoothing the product film (7) is arranged at one end of the forming guide roller machine (4) away from the multi-channel extrusion device (2). A processing guide roller machine (6) for cooling and trimming the product film (7) is arranged at one end of the film scraping mechanism (5) away from the forming guide roller machine (4). The multi-channel extrusion device (2) comprises a main framework (201). A double-channel housing (202) directly connected to the screw extruder (1) is fixedly installed at one end of the main framework (201). An inlet (204) and an outlet (205) are respectively arranged on the side walls at both ends of the double-channel housing (202), and the inlet (204) is arranged on the side of the double-channel housing (202) close to the screw extruder (1). A segmented softening treatment component for separately softening the molten material is arranged inside the double-channel housing (202). The segmented softening treatment component comprises two silos (208) rotatably installed inside the double-channel housing (202). Through holes (209) through which the molten material passes are arranged on both side walls of the silo (208). Inflow branch channels (206) and outflow branch channels (207) for the molten material to flow are respectively arranged on both sides inside the double-channel housing (202). The inflow branch channel (206) is communicated with the inlet (204) and is used for guiding the molten material into the two silos (208). The outflow branch channel (207) is communicated with the inlet (204) and is used for guiding the molten material inside the silo (208) out. Inner mesh cylinders (210) are fixedly installed inside the silos (208). Circular screen meshes (211) are fixedly embedded inside the through holes (209) close to the inflow branch channel (206). Two motor housings (203) are fixedly arranged on the outer wall of one side of the double-channel housing (202). Motors I are fixedly installed inside the motor housings (203). A baffle plate (212) is fixedly installed at the output end of the motor I. The baffle plate (212) is rotatably arranged inside the inner mesh cylinder (210) and is used for controlling the flow rate of the molten material entering the outflow branch channel (207). Inside the double-channel housing (202) and directly above the silo (208), gas collection grooves (213) are provided. At the top of the gas collection grooves (213), air pipes (214) for discharging gas are provided. On the top and side walls of the double-channel housing (202), pressure-type exhaust parts (3) for discharging gas in the molten material are installed. The pressure-type exhaust part (3) includes a pneumatic pipe (301) for temporarily storing gas. In the middle of the outer wall of the pneumatic pipe (301), an inverted U-shaped gas pipe (302) is fixedly connected. The end of the inverted U-shaped gas pipe (302) is connected to the top end of the air pipe (214). At the top of the outer wall of the pneumatic pipe (301), a pressure relief gas pipe (303) is fixedly connected. At the end of the pressure relief gas pipe (303), a gas valve (304) for controlling the release of gas is installed. At the top end inside the pneumatic pipe (301), a pressure sensor (305) for real-time detection of the air pressure inside the pneumatic pipe (301) is fixedly installed. At the bottom end of the inner wall of the pneumatic pipe (301), a first spring (306) is fixedly connected. The top end of the first spring (306) is connected to a piston (307). The film scraping mechanism (5) includes a plate structure (501). On the obliquely upper surface of the plate structure (501), a reciprocating smoothing component for smoothing the longitudinal wrinkles on the surface of the product film (7) is provided. Above the obliquely upper part of the plate structure (501), a support guide roller (528) for auxiliary transportation is movably installed. Above the obliquely upper part of the plate structure (501), a lifting self-adjusting component for controlling the up and down movement of the support guide roller (528) is provided.

2. A polar film forming device according to claim 1, characterized in that: The position of the piston (307) should always be lower than the connection between the inverted U-shaped gas pipe (302) and the pneumatic pipe (301).

3. A polar film forming device according to claim 1, characterized in that: On the inner wall of the pneumatic pipe (301), a standard pressure scale (H) and a high pressure scale (H1) corresponding to the air pressure inside the pneumatic pipe (301) at the position where the piston (307) is located are provided. The high pressure scale (H1) is lower than the standard pressure scale (H). When the piston (307) is at the high pressure scale (H1) position, the pressure sensor (305) triggers and opens the gas valve (304) to release pressure.

4. A polar film forming device according to claim 1, characterized in that: At the outlet (205) of the outer wall of the double-channel housing (202), an outflow pipe (215) is connected. In the middle of the outflow pipe (215), a secondary diverter (216) for secondary mixing of the molten material is provided. Inside the secondary diverter (216), a diverting flow channel (217) in the shape of an "8" is provided. At the bottom of the other end of the main structure (201), an extrusion die head (218) for extruding the molten material in the shape of a thin film is installed. The extrusion die head (218) is connected to the end of the outflow pipe (215).

5. A polar film forming device according to claim 1, characterized in that: A power shaft (504) is rotatably installed inside the plate structure (501). A second motor (502) is fixedly installed at the bottom of one side of the plate structure (501). An output end of the second motor (502) and one end of the power shaft (504) are jointly assembled with a transmission assembly (503) for driving the power shaft (504) to rotate. Helical gears I (505) are fixedly installed on the surfaces of both ends of the power shaft (504).

6. A polar film forming device according to claim 5, wherein: The reciprocating smoothing assembly includes two double-grooved rods (506) rotatably installed on the upper inclined surface of the plate structure (501) and a driving swing arm (509). A middle groove (507) and an end groove (508) are respectively formed in the middle and the end of the double-grooved rod (506). A helical gear II (510) is fixedly installed at the rotation center of the driving swing arm (509) through a rotating shaft. The helical gear II (510) is located on the lower inclined surface of the plate structure (501) and meshes with the helical gear I (505). An end rod (511) inserted into the middle groove (507) is fixedly connected to the end of the driving swing arm (509); A film scraping column (512) is inserted through the end groove (508). A slider (513) is fixedly connected to the bottom end of the film scraping column (512). A straight guide groove (517) for guiding the movement of the slider (513) is formed on the surface of the plate structure (501). A second spring (514) is connected between the slider (513) and the double-grooved rod (506). A film scraping plate (515) is fixedly connected to the top end of the film scraping column (512). Guide rods (516) are fixedly connected to both ends of the film scraping plate (515).

7. A polar film forming device according to claim 6, wherein: Guide frames (518) for guiding the movement of the film scraping plate (515) are symmetrically and fixedly installed on the upper inclined surface of the plate structure (501). The guide frames (518) are perpendicular to the surface of the plate structure (501). Path grooves for inserting and guiding the guide rods (516) are symmetrically formed inside both ends of the guide frames (518). The path grooves include a film scraping occurrence section (519) at the top, a far section (520) at the end of the film scraping occurrence section (519), a return section (521) at the bottom, and an approach section (522) for connecting the film scraping occurrence section (519) and the return section (521). The inclination angle of the far section (520) is greater than that of the approach section (522). An inclined surface slider (523) is movably inserted inside the guide frame (518) and on one side of the top of the approach section (522). A third spring is connected between the inclined surface slider (523) and the inner wall of the guide frame (518). Auxiliary rollers (524) are rotatably installed at the upper inclined top ends of both guide frames (518).

8. A polar film forming device according to claim 7, wherein: The lifting and self-adjusting assembly includes a transfer rod (530) and a straight link rod (532) rotatably connected to the end of the transfer rod (530). Symmetrically fixed to the obliquely upper surface of the plate structure (501) are swivel rods (529), and the transfer rod (530) is movably sleeved on the surface of the swivel rods (529). The straight link rod (532) is slidably installed straight on the top of the plate structure (501). At the other end of the transfer rod (530), there are two branch rods (531), and the included angle between the two branch rods (531) is an acute angle.

9. A polar film-forming device according to claim 8, characterized in that: On both sides of the top of the plate structure (501) obliquely above, there are end brackets (525) and end conduits (526), and the end brackets (525) are located directly below the end conduits (526). Both ends of the support roller (528) are rotatably installed with roller brackets (527), and the bottom of the roller brackets (527) is slidably installed inside the end conduits (526). Inside the end of the end bracket (525), there is a rotatably installed end rotating rod (533), and a cam (534) is fixedly installed in the middle of the end rotating rod (533). The cam (534) is in contact connection with the bottom end of the roller bracket (527). One end of the end rotating rod (533) is fixedly connected to a rotating arm (535), and the end of the straight link rod (532) is rotatably connected to the end of the rotating arm (535).

10. A polar film-forming method for using the polar film-forming device according to any one of claims 1-9, characterized in that, the specific steps are as follows: S1: Put the film-making material into the screw extruder (1), and under the melting, fusing, and extrusion transportation processes of the screw extruder (1), the molten material is finally extruded into the double-channel housing (202); S2: The molten material entering from the inlet (204) will separately enter into the two inflow branch channels (206), then sequentially pass through the circular screen (211) and the side wall of the inner cylinder (210) and enter into the silo (208). Under the continuous extrusion of the molten material, the molten material will pass through the side wall of the inner cylinder (210) again and enter into the outflow branch channel (207), and finally enter into the outflow pipe (215) from the outlet (205). During the process of the molten material passing through the circular screen (211) and the inner cylinder (210), under the action of the hollow circular screen (211) and the inner cylinder (210), the molten material will be dispersed and then polymerized. The dispersion process can prevent the molten material in the central part from being carbonized due to excessive temperature, and the gas remaining in the molten material will also be separated out; S3: After the gas remaining in the molten material is separated, it will move upward and eventually accumulate inside the gas collecting tank (213). During the process of the molten material's hydraulic pressure and the continuous accumulation of gas, the gas will enter the inside of the pressure tube (301) through the inverted U-shaped gas tube (302). As the internal air pressure of the pressure tube (301) gradually increases, during the continuous collection of gas, the piston (307) will move from the standard pressure scale (H) to the high-pressure scale (H1), continuously squeezing the first spring (306). When the piston (307) reaches the high-pressure scale (H1), the pressure sensor (305) will also detect that the internal air pressure of the pressure tube (301) has reached the preset air pressure value. Subsequently, the pressure sensor (305) will activate the air valve (304), and through the air valve (304), the pressure relief air tube (303) will be unblocked and slowly release air to the outside to achieve the pressure relief work. During the pressure relief process, the piston (307) will reset to the standard pressure scale (H) under the action of the first spring (306), and at this time, the air pressure will also drop to the original value. Immediately afterwards, the air valve (304) will close, and this process is used to achieve the work of discharging gas. In addition, the internal air pressure of the pressure tube (301) is always maintained above a standard air pressure, and the existence of this standard air pressure is used to prevent the molten material from entering the inside of the air guide tube (214); S4: Before the molten material passes through the outflow tube (215), it will first enter the shunt flow channel (217) of the secondary shunt device (216), and a secondary separation and re-fusion process will occur inside the shunt flow channel (217). The internal pipeline of the shunt flow channel (217) is narrow, so the hydraulic pressure of the molten material inside can be increased, thereby improving the effect of molten material fusion. After the secondary fusion is completed, it will finally be extruded from the extrusion die head (218) into the inside of the forming guide roller machine (4), and after being extruded and cooled by the guide rollers of the forming guide roller machine (4), a product film (7) is formed; S5: Before the product film (7) enters the inside of the processing guide roller machine (6), it will first pass through the film scraping mechanism (5). During this process, the second motor (502) continuously operates to rotate the driving swing arm (509). The driving swing arm (509) drives the double-groove rod (506) to rotate reciprocally, and then drives the two film scraping plates (515) to move reciprocally in the opposite direction through the two double-groove rods (506). When the film scraping plate (515) moves from the middle of the product film (7) to one side, the film scraping plate (515) just fits the lower surface of the product film (7), and the guide rods (516) at both ends thereof will move inside the film scraping occurrence section (519). During the movement process, the effect of smoothing the product film (7) is achieved; when the guide rods (516) successively enter the inside of the far section (520), the return section (521), and the approaching section (522), during this process, the film scraping plate (515) will not contact the product film (7); S6: When the guide rod (516) moves inside the film scraping section (519), the end of the double-grooved rod (506) will contact and squeeze a branch rod (531), thereby driving the transfer rod (530) to rotate, and the straight connecting rod (532) connected to the end of the transfer rod (530) will move in a straight line and drive the rotating arm (535) to rotate at the same time. At the same time, the cam (534) will also rotate, and the raised part of the cam (534) will be offset from the bottom of the guide roller frame (527). At this time, the guide roller frame (5 27) will move downward, and finally move the support guide roller (528) downward, so that in the process of smoothing the product film (7), the support guide roller (528) is moved away from the product film (7) to avoid the support guide roller (528) hindering the smoothing process. When the double-grooved rod (506) rotates and resets, its end will contact another branch rod (531) and cause the transfer rod (530) to reset and rotate. After resetting, the support guide roller (528) can contact the product film (7) again to complete the auxiliary product film (7) transportation to work.

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