Plastic packaging film manufacturing and blowing device and method based on modified plastic master batch

Abstract

The invention relates to the technical field of plastic packaging film manufacturing, and discloses a plastic packaging film manufacturing and blowing device and method based on modified plastic master batch. Comprising a steel frame, a traction device arranged at the top of the steel frame, a coiling device arranged on one side of the steel frame, an ozone generation device and an extrusion assembly which are arranged below the steel frame, and a material mixing mechanism arranged above the extrusion assembly. The master batch and the additive in the first mixing cavity are mixed through the stirring assembly, then the mixture enters the second mixing cavity and the third mixing cavity through the first conveying pipe and the second conveying pipe in sequence and is mixed with the master batch shunted by the second mixing cavity and the third mixing cavity, and finally the mixture enters the extrusion assembly through the third conveying pipe and the discharging pipe. And the effects of improving the production efficiency and meeting specific application requirements are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of plastic packaging film manufacturing, and in particular to a film blowing device and method for manufacturing a plastic packaging film based on a modified plastic masterbatch. Background Art

[0002] The film blowing device for manufacturing plastic packaging film based on modified plastic masterbatch is a mechanical equipment used to produce plastic film, which uses modified plastic masterbatch as the main raw material. The plastic film blowing machine melts the plastic raw material by heating, and then blows it into a film with high-pressure air, and finally completes the production through processes such as cooling, pulling and winding. This device has the advantages of high efficiency, flexibility and low cost. The film produced is widely used in packaging, agriculture, food and other fields. With the continuous development of technology, the film blowing machine is also constantly improving and innovating to meet the market demand for high-quality films.

[0003] Patent publication number CN108908917A discloses a film blowing device for manufacturing plastic packaging film that is easy to fix, comprising a first motor, a barrel is arranged on the left side of the first motor, electric heating rods are installed at the upper and lower ends of the barrel, a material barrel is connected to the left side of the barrel, a center rod is welded inside the material barrel, and an air ring is connected to the upper end of the center rod, a blower is arranged in front of the material barrel, a baffle is arranged above the material barrel, a frame is arranged on the outside of the material barrel, a rotating shaft is installed at the top of the baffle, a second motor is arranged on the upper surface of the frame, a splint is installed inside the slide, and a coil rack is arranged on the left side of the frame. This film blowing device for manufacturing plastic packaging film that is easy to fix can quickly melt plastic particles, improve work efficiency, make the plastic cool evenly, improve the quality of the plastic, prevent the plastic from shaking, and facilitate the fixing of the plastic. ‌ The prior art has the following defects: Inability to fully mix multiple masterbatches and multiple additives: The existing mixing equipment has poor performance, and the physical properties of the raw materials (such as particle size, density, viscosity, etc.) vary greatly, which increases the difficulty of mixing and makes it difficult to evenly disperse some raw materials, resulting in uneven local components in the mixture and increasing the scrap rate in the production process. Therefore, it is necessary to set up multiple mixing devices and use the equal amount incremental mixing method to fully mix multiple masterbatches and multiple additives to improve the mechanical strength, heat resistance, wear resistance and even conductivity of the mixture, so as to improve production efficiency and meet specific application requirements.

[0004] Lack of disinfection of raw materials and cooling stages: In order to protect the environment, plastics recycled from waste are often used as masterbatches. The masterbatches may carry various microorganisms, including pathogenic bacteria. If they are used directly without disinfection, the entire production line will be contaminated, which will not only affect the quality of the product, but may also pose a threat to consumers' health and cause food safety issues. Therefore, it is necessary to set up an ozone disinfection device for the raw materials and cooling stages. Ozone disinfection of the raw materials can effectively kill the carried microorganisms and prevent them from contaminating the products during the production process. Disinfection in the cooling stage can further eliminate potential sources of pollution, ensuring that the product is not contaminated in the final stage, thereby improving the hygiene quality and safety of the product. Summary of the invention

[0005] In view of the problems in the prior art such as the inability to fully mix multiple masterbatches and multiple additives and the lack of sterilization of raw materials and cooling stages, a film blowing device and method for manufacturing plastic packaging film based on modified plastic masterbatch are proposed.

[0006] On the one hand, the present application provides a film blowing device for manufacturing plastic packaging film based on modified plastic masterbatch, the purpose of which is to: through the setting of a mixing mechanism, utilize the equal amount progressive mixing method to fully mix a variety of masterbatches and a variety of additives, improve the mechanical strength, heat resistance, wear resistance and even conductivity of the mixture, so as to achieve the effect of improving production efficiency and meeting specific application requirements; through the setting of an ozone generating device, ozone disinfection of the raw materials can effectively kill the carried microorganisms and prevent them from contaminating the products during the production process; disinfection in the cooling stage can further eliminate potential sources of pollution, ensure that the product is not contaminated in the final stage, and achieve the effect of improving the sanitary quality and safety of the product.

[0007] The technical solution of the present invention is: a blown film device for manufacturing plastic packaging film based on modified plastic masterbatch, comprising a steel frame, a traction device arranged on the top of the steel frame, a winding device arranged on one side of the steel frame, an ozone generator and an extrusion assembly arranged below the steel frame, and a mixing mechanism arranged above the extrusion assembly, wherein the mixing mechanism comprises a fixed frame fixed on the ground, a material distribution assembly is arranged above the fixed frame, an equal amount mixing assembly is arranged below the material distribution assembly, a preliminary mixing box is connected above the material distribution assembly, and a stirring assembly is arranged above the preliminary mixing box; The material distribution assembly includes a material distribution box fixedly installed above the fixed frame, a disinfection box fixedly installed above the material distribution box, an inner wall of the disinfection box is connected with an auger blade, and a first material leakage port, a second material leakage port and a third material leakage port are opened inside the material distribution box, and the first material leakage port, the second material leakage port and the third material leakage port are all arranged directly below the lower leakage port of the disinfection box.

[0008] By adopting the above scheme, through the setting of the material dividing component, the masterbatch enters the disinfection box and slowly slides down along the auger blades. At the same time, the ozone generating device generates ozone which enters the disinfection box for disinfection. The disinfected masterbatch enters the material dividing box through the bottom of the disinfection box, and then is diverted to equal amounts of mixing components in a ratio of 1:2:4 through the first leakage port, the second leakage port and the third leakage port, thereby playing the role of automatic proportioning.

[0009] Furthermore, the equal amount mixing component includes an additive mixing box fixedly installed below the material distribution box, and the interior of the additive mixing box is provided with a first mixing chamber, a second mixing chamber and a third mixing chamber, and the first mixing chamber, the second mixing chamber and the third mixing chamber are respectively connected to the first leakage port, the second leakage port and the third leakage port.

[0010] Furthermore, a first material conveying pipe is connected between the first mixing chamber and the second mixing chamber, a second material conveying pipe is connected between the second mixing chamber and the third mixing chamber, a third material conveying pipe is connected below the third mixing chamber, one end of the third material conveying pipe away from the third mixing chamber is connected to the interior of the progressive mixing box, and a discharge pipe is connected below the progressive mixing box.

[0011] By adopting the above scheme, after the masterbatch is diverted to the first mixing chamber, the second mixing chamber and the third mixing chamber inside the incremental mixing box through the equal mixing component, the additives in corresponding proportions are added to the first mixing chamber, and the masterbatch and the additives in the first mixing chamber are mixed by the stirring component, and then enter the second mixing chamber and the third mixing chamber through the first delivery pipe and the second delivery pipe in turn to mix with the masterbatch diverted thereto, and finally enter the extrusion component through the third delivery pipe and the discharge pipe, and utilize the equal incremental mixing method to fully mix a variety of masterbatches and a variety of additives, so as to achieve the effect of improving production efficiency and meeting specific application requirements.

[0012] Furthermore, the stirring assembly includes auxiliary stirring rods arranged inside the first mixing chamber, the second mixing chamber and the third mixing chamber, and a main stirring rod arranged inside the preliminary mixing box, and the outer walls of the plurality of auxiliary stirring rods and the main stirring rod are connected to stirring blades of varying numbers.

[0013] Furthermore, the stirring assembly also includes a stirring motor fixedly installed on the top of the preliminary mixing box, the output shaft of the stirring motor is connected to the main stirring rod, a transmission gear is connected to the outer wall of the main stirring rod away from the stirring motor, and the first mixing chamber, the second mixing chamber and the third mixing chamber are all connected to the outer walls of the ends close to the stirring motor with driven gears with different numbers of teeth, and multiple driven gears are all meshed with the transmission gear.

[0014] By adopting the above scheme, when the masterbatch in the preliminary mixing box is stirred, the stirring motor is operated through the stirring assembly, and the output shaft of the stirring motor drives the main stirring rod to rotate, and the stirring blades perform preliminary mixing of the masterbatch. When the mixed material in the incremental mixing box is stirred, the auxiliary stirring rod is driven to rotate by the main stirring rod via the transmission gear and the driven gear, and the stirring blades mix the masterbatch and additives in the first mixing chamber, thereby providing stirring power.

[0015] Furthermore, a connecting pipe is connected between the preliminary mixing box and the disinfection box, and butterfly valves are fixedly installed on the middle sections of the connecting pipe, the first feed pipe, the second feed pipe and the third feed pipe.

[0016] Furthermore, the interior of the preliminary mixing box is connected to a masterbatch input pipe, and the interior of the first mixing chamber is connected to an additive input pipe.

[0017] By adopting the above solution, the connecting pipe, the first material conveying pipe, the second material conveying pipe, the third material conveying pipe and the corresponding butterfly valve are provided to control the flow.

[0018] Furthermore, the extrusion assembly includes a driving motor and a die head fixed on the ground, a heating pipe is connected between the driving motor and the die head, the output shaft sleeve of the driving motor is provided with a spiral rod, the spiral rod is arranged inside the heating pipe, the interior of the heating pipe is connected to one end of the discharge pipe close to the spiral rod, and an air ring is provided on the top of the die head.

[0019] By adopting the above scheme, the drive motor is operated through the extrusion assembly, and the output shaft of the drive motor drives the spiral rod to rotate in the heating pipe. The mixed material is heated and extruded through the heating pipe and then formed inside the die head. It is then cooled by the air ring and sterilized with ozone for the second time. Finally, it is towed by the traction device and wound up by the winding device, thereby achieving the effect of extrusion molding.

[0020] Furthermore, two ozone output pipes are provided outside the ozone generating device, and an ozone input port is opened on the outer wall of the disinfection box, one of the ozone output pipes is connected to the interior of the disinfection box through the ozone input port, and the other ozone output pipe is connected to the interior of the air ring.

[0021] By adopting the above scheme, through the ozone generating device, ozone disinfection of raw materials can effectively kill the microorganisms carried, preventing them from contaminating the products during the production process. Disinfection in the cooling stage can further eliminate potential sources of pollution, ensuring that the product is not contaminated in the final stage, thereby achieving the effect of improving the sanitary quality and safety of the product.

[0022] Another aspect of the present application provides a method for manufacturing a film blowing device for manufacturing a plastic packaging film based on a modified plastic masterbatch, using a film blowing device for manufacturing a plastic packaging film based on a modified plastic masterbatch, comprising the following steps: Step 1: Input the masterbatch into the preliminary mixing box through the masterbatch input pipe; Step 2: operating the stirring component to preliminarily mix the masterbatch in the preliminary mixing box; Step 3: The mixed masterbatch enters the disinfection box for the first ozone disinfection; Step 4: The sterilized masterbatch enters the progressive mixing box through the material distribution box; Step 5: Inputting additives of corresponding proportions into the first mixing chamber through the additive input pipe for first mixing; Step 6: Enter the second mixing chamber for a second mixing; Step 7: Finally, enter the third mixing chamber for the third mixing; Step 8: The fully mixed raw materials enter the extrusion assembly for extrusion; Step 9: The extruded film is cooled by the air ring and sterilized with ozone for the second time; Step 10: After the traction device tractions, the winding device reels it.

[0023] The above scheme is adopted, by inputting the masterbatch into the preliminary mixing box through the masterbatch input pipe, and then running the stirring motor, the output shaft of the stirring motor drives the main stirring rod to rotate, the stirring blades preliminarily mix the masterbatch, and then the connecting pipe is opened by the butterfly valve to allow the mixed masterbatch to enter the disinfection box. After entering the disinfection box, the masterbatch slowly slides down along the auger blades. At the same time, the ozone generator generates ozone and enters the disinfection box through the ozone input port for disinfection. The disinfected masterbatch enters the distribution box through the bottom of the disinfection box, and then is diverted to the first mixing chamber, the second mixing chamber and the third mixing chamber inside the incremental mixing box through the first leakage port, the second leakage port and the third leakage port in a ratio of 1:2:4. After diversion, the masterbatch is added The additive input pipe inputs the additive of corresponding proportion into the first mixing chamber, and at the same time, the auxiliary stirring rod is driven to rotate through the main stirring rod via the transmission gear and the driven gear, and the stirring blade mixes the masterbatch and the additive in the first mixing chamber, and then enters the second mixing chamber and the third mixing chamber through the first feeding pipe and the second feeding pipe in turn to mix with the masterbatch diverted thereto, and finally enters the extrusion assembly through the third feeding pipe and the discharge pipe. At this time, the drive motor is operated, and the output shaft of the drive motor drives the spiral rod to rotate in the heating pipe. After being heated and extruded through the heating pipe, the mixture is formed inside the die head, and then cooled by the air ring and disinfected by secondary ozone, and finally towed by the traction device and wound by the winding device to complete the manufacturing.

[0024] Beneficial effects of the present invention: Through the set material dividing component and equal mixing component, the masterbatch is divided into the first mixing chamber, the second mixing chamber and the third mixing chamber inside the progressive mixing box at a ratio of 1:2:4 through the first leakage port, the second leakage port and the third leakage port, and then the additives in the corresponding proportion are added to the first mixing chamber, and the stirring component mixes the masterbatch and the additive in the first mixing chamber, and then enters the second mixing chamber and the third mixing chamber through the first feeding pipe and the second feeding pipe in turn to mix with the masterbatch divided thereto, and finally enters the extrusion component through the third feeding pipe and the discharge pipe, and uses the equal progressive mixing method to fully mix a variety of masterbatches and a variety of additives, so as to improve production efficiency and meet specific application requirements.

[0025] Through the ozone generator, disinfection box and air ring, the ozone generated by the ozone generator enters the disinfection box for disinfection. The disinfected masterbatch enters the distribution box through the bottom of the disinfection box. The mixed material is heated and extruded through the heating pipe and then formed inside the die head. It is then cooled by the air ring and disinfected with ozone for the second time. The disinfection of raw materials with ozone can effectively kill the carried microorganisms and prevent them from contaminating the products during the production process. The disinfection in the cooling stage can further eliminate potential sources of pollution, ensuring that the product is not contaminated in the final stage, thereby achieving the effect of improving the hygiene quality and safety of the product.

[0026] Through the provided stirring assembly, when the masterbatch in the preliminary mixing box is stirred, the stirring motor is operated, and the output shaft of the stirring motor drives the main stirring rod to rotate, and the stirring blades perform preliminary mixing of the masterbatch. When the mixed material in the incremental mixing box is stirred, the auxiliary stirring rod is driven to rotate by the main stirring rod via the transmission gear and the driven gear, and the stirring blades mix the masterbatch and additives in the first mixing chamber, thereby providing stirring power. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the main structure of the present invention; Figure 2 It is a structural schematic diagram of the ozone generating device of the present invention; Figure 3 It is a structural schematic diagram of the mixing mechanism of the present invention; Figure 4 It is a partial structural schematic diagram of the stirring assembly of the present invention; Figure 5 It is a partial structural schematic diagram of the material distribution component of the present invention; Figure 6 It is a partial structural schematic diagram of the ozone input port of the present invention; Figure 7 It is a partial structural schematic diagram of the material leakage port of the present invention; Figure 8 It is a partial structural schematic diagram of the equal amount mixing component of the present invention; Fig. 9 It is a partial structural schematic diagram of the discharge pipe of the present invention; Fig.10 It is a partial structural schematic diagram of the spiral rod of the present invention.

[0028] In the figure: 1. Steel frame; 2. Traction device; 3. Winding device; 4. Ozone generator; 5. Mixing mechanism; 51. Stirring assembly; 511. Stirring motor; 512. Main stirring rod; 513. Stirring blade; 514. Transmission gear; 515. Driven gear; 516. Auxiliary stirring rod; 52. Masterbatch input pipe; 53. Preliminary mixing box; 54. Connecting pipe; 55. Disinfection box; 552. Auger blade; 553. Disinfection box; 554. Ozone input port; 555. First leakage port ; 556, second leakage port; 557, third leakage port; 56, additive input pipe; 57, equal mixing component; 571, progressive mixing box; 572, first mixing chamber; 573, first feed pipe; 574, second mixing chamber; 575, second feed pipe; 576, third mixing chamber; 577, third feed pipe; 578, discharge pipe; 58, fixed frame; 59, butterfly valve; 6, extrusion component; 61, drive motor; 62, heating pipe; 63, die head; 64, air ring; 65, screw rod. DETAILED DESCRIPTION

[0029] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0030] Example 1, reference Figure 1 - Fig.10 , which is the first embodiment of the present invention, provides a film blowing device for manufacturing plastic packaging film based on modified plastic masterbatch, including a steel frame 1, a traction device 2 arranged on the top of the steel frame 1, a winding device 3 arranged on one side of the steel frame 1, an ozone generator 4 and an extrusion assembly 6 arranged below the steel frame 1, and a mixing mechanism 5 arranged above the extrusion assembly 6, the mixing mechanism 5 includes a fixed frame 58 fixed on the ground, a material distribution assembly 55 is arranged above the fixed frame 58, an equal amount mixing assembly 57 is arranged below the material distribution assembly 55, a preliminary mixing box 53 is connected above the material distribution assembly 55, and a stirring assembly 51 is arranged above the preliminary mixing box 53.

[0031] Reference Figure 5 - Fig. 9The material distribution component 55 includes a material distribution box 553 fixedly installed above the fixed frame 58, a disinfection box 551 is fixedly installed above the material distribution box 553, the inner wall of the disinfection box 551 is connected with an auger blade 552, and a first material leakage port 555, a second material leakage port 556 and a third material leakage port 557 are opened inside the material distribution box 553, and the first material leakage port 555, the second material leakage port 556 and the third material leakage port 557 are all arranged directly below the lower leakage port of the disinfection box 551.

[0032] Specifically, the basic processing flow of the film blowing device for manufacturing plastic packaging film is as follows: the mixing mechanism 5 performs batching, stirring, mixing and sterilization; the extrusion assembly 6 performs melting and film blowing; the traction device 2 and the winding device 3 perform winding; during sterilization, the ozone generator 4 generates ozone to sterilize the raw materials and the cooling stage respectively; the auger blades 552 can be replaced according to the sterilization efficiency of the ozone so as to take into account both the sterilization effect and the sterilization efficiency; when the masterbatch falls from the sterilization box 551 into the distribution box 553, it is dispersed by the first leakage port 555, the second leakage port 556 and the third leakage port 557 in a ratio of 1:2:4.

[0033] Through the arranged material dividing component 55, after the masterbatch enters the disinfection box 551, it slowly slides down along the auger blade 552. At the same time, the ozone generating device 4 generates ozone which enters the disinfection box 551 for disinfection. The disinfected masterbatch enters the material dividing box 553 through the bottom of the disinfection box 551, and then is diverted to the equal amount mixing component 57 in the ratio of 1:2:4 through the first leakage port 555, the second leakage port 556 and the third leakage port 557, to play the role of automatic proportioning.

[0034] Reference Figure 8 - Fig. 9 The equal amount mixing component 57 includes an incremental mixing box 571 fixedly installed below the material distribution box 553, and a first mixing chamber 572, a second mixing chamber 574 and a third mixing chamber 576 are provided inside the incremental mixing box 571, and the first mixing chamber 572, the second mixing chamber 574 and the third mixing chamber 576 are respectively connected to the first leakage port 555, the second leakage port 556 and the third leakage port 557, a first material delivery pipe 573 is connected between the first mixing chamber 572 and the second mixing chamber 574, a second material delivery pipe 575 is connected between the second mixing chamber 574 and the third mixing chamber 576, a third material delivery pipe 577 is connected below the third mixing chamber 576, and one end of the third material delivery pipe 577 away from the third mixing chamber 576 is connected to the interior of the incremental mixing box 571, and a discharge pipe 578 is connected below the incremental mixing box 571.

[0035] Through the set equal amount mixing component 57, the masterbatch is diverted to the first mixing chamber 572, the second mixing chamber 574 and the third mixing chamber 576 inside the incremental mixing box 571, and then the additives in the first mixing chamber 572 are added. The stirring component 51 mixes the masterbatch and the additive in the first mixing chamber 572, and then enters the second mixing chamber 574 and the third mixing chamber 576 through the first delivery pipe 573 and the second delivery pipe 575 in turn to mix with the masterbatch diverted to it, and finally enters the extrusion component 6 through the third delivery pipe 577 and the discharge pipe 578. The equal amount incremental mixing method is used to fully mix a variety of masterbatches and a variety of additives, so as to improve production efficiency and meet specific application requirements.

[0036] Reference Figure 4 - Figure 5 The stirring assembly 51 includes auxiliary stirring rods 516 arranged inside the first mixing chamber 572, the second mixing chamber 574 and the third mixing chamber 576, and a main stirring rod 512 arranged inside the preliminary mixing box 53. The outer walls of the plurality of auxiliary stirring rods 516 and the main stirring rod 512 are connected with stirring blades 513 of varying numbers. The stirring assembly 51 also includes a stirring motor 511 fixedly installed on the top of the preliminary mixing box 53. The output shaft of the stirring motor 511 is connected to the main stirring rod 512. A transmission gear 514 is connected to the outer wall of the end of the main stirring rod 512 away from the stirring motor 511. The outer walls of the first mixing chamber 572, the second mixing chamber 574 and the third mixing chamber 576 close to the stirring motor 511 are connected with driven gears 515 with different numbers of teeth. The plurality of driven gears 515 are meshed with the transmission gear 514.

[0037] Specifically, the lengths of the multiple auxiliary stirring rods 516 are different, and the length increases successively from the auxiliary stirring rod 516 in the first mixing chamber 572 to the auxiliary stirring rod 516 in the third mixing chamber 576. The stirring blades 513 connected to the multiple auxiliary stirring rods 516 are also different, and the length increases successively from the stirring blades 513 in the first mixing chamber 572 to the stirring blades 513 in the third mixing chamber 576. The number of teeth of the multiple driven gears 515 is also different, but their module is the same as the module of the transmission gear 514.

[0038] When the masterbatch in the preliminary mixing box 53 is stirred by the stirring assembly 51, the stirring motor 511 is operated, and the output shaft of the stirring motor 511 drives the main stirring rod 512 to rotate, and the stirring blades 513 perform preliminary mixing of the masterbatch. When the mixed material in the incremental mixing box 571 is stirred, the auxiliary stirring rod 516 is driven to rotate by the main stirring rod 512 via the transmission gear 514 and the driven gear 515, and the stirring blades 513 mix the masterbatch and additives in the first mixing chamber 572, thereby providing stirring power.

[0039] Reference Figure 3- Fig.10 A connecting pipe 54 is connected between the preliminary mixing box 53 and the disinfection box 551. The middle sections of the connecting pipe 54, the first feed pipe 573, the second feed pipe 575 and the third feed pipe 577 are fixedly installed with butterfly valves 59. The interior of the preliminary mixing box 53 is connected to the masterbatch input pipe 52, and the interior of the first mixing chamber 572 is connected to the additive input pipe 56.

[0040] The connecting pipe 54 , the first material delivery pipe 573 , the second material delivery pipe 575 , the third material delivery pipe 577 and the corresponding butterfly valve 59 are used to control the flow.

[0041] Reference Figure 2 - Fig.10 The extrusion assembly 6 includes a driving motor 61 and a die head 63 fixed on the ground, a heating pipe 62 is connected between the driving motor 61 and the die head 63, the output shaft sleeve of the driving motor 61 is provided with a screw rod 65, the screw rod 65 is arranged inside the heating pipe 62, the inside of the heating pipe 62 is connected to the end of the discharge pipe 578 close to the screw rod 65, and an air ring 64 is provided on the top of the die head 63.

[0042] Through the extrusion assembly 6, the drive motor 61 is operated, and the output shaft of the drive motor 61 drives the screw rod 65 to rotate in the heating pipe 62. The mixed material is heated and extruded through the heating pipe 62 and then formed inside the die head 63. It is then cooled by the air ring 64 and sterilized by secondary ozone. Finally, it is pulled by the traction device 2 and rolled up by the winding device 3, thereby achieving the effect of extrusion molding.

[0043] Reference Figure 2 Two ozone output pipes are provided outside the ozone generating device 4 , and an ozone input port 554 is opened on the outer wall of the disinfection box 551 , one of the ozone output pipes is connected to the interior of the disinfection box 551 through the ozone input port 554 , and the other ozone output pipe is connected to the interior of the air ring 64 .

[0044] By setting up the ozone generator 4, ozone disinfection of raw materials can effectively kill the microorganisms carried by them, preventing them from contaminating the products during the production process. Disinfection in the cooling stage can further eliminate potential sources of pollution, ensuring that the products are not contaminated in the final stage, thereby achieving the effect of improving the sanitary quality and safety of the products.

[0045] During use, the masterbatch is input into the preliminary mixing box 53 through the masterbatch input pipe 52, and then the stirring motor 511 is operated. The output shaft of the stirring motor 511 drives the main stirring rod 512 to rotate, and the stirring blade 513 performs preliminary mixing of the masterbatch, and then the connecting pipe 54 is opened through the butterfly valve 59 to allow the mixed masterbatch to enter the disinfection box 551. After entering the disinfection box 551, the masterbatch slowly slides down along the auger blade 552. At the same time, the ozone generating device 4 generates ozone which enters the disinfection box 551 through the ozone input port 554 for disinfection. The disinfected masterbatch enters the distribution box 553 through the bottom of the disinfection box 551, and then is diverted to the first mixing chamber 572, the second mixing chamber 574 and the third mixing chamber 576 in the incremental mixing box 571 in a ratio of 1:2:4 through the first leakage port 555, the second leakage port 556 and the third leakage port 557. After diversion, the masterbatch is added The additive input pipe 56 inputs the additive of corresponding proportion into the first mixing chamber 572, and at the same time, the main stirring rod 512 drives the auxiliary stirring rod 516 to rotate through the transmission gear 514 and the driven gear 515, and the stirring blade 513 mixes the masterbatch and additive in the first mixing chamber 572, and then enters the second mixing chamber 574 and the third mixing chamber 576 through the first delivery pipe 573 and the second delivery pipe 575 in turn to mix with the masterbatch diverted thereto, and finally enters the extrusion component 6 through the third delivery pipe 577 and the discharge pipe 578. At this time, the drive motor 61 is operated, and the output shaft of the drive motor 61 drives the spiral rod 65 to rotate in the heating pipe 62. After being heated and extruded by the heating pipe 62, the mixture is formed inside the die head 63, and then cooled by the air ring 64 and disinfected by secondary ozone, and finally pulled by the traction device 2 and wound by the winding device 3 to complete the manufacturing.

[0046] Example 2, reference Figure 1 - Fig.10 , provides a method for manufacturing a film blowing device for manufacturing a plastic packaging film based on a modified plastic masterbatch, using a film blowing device for manufacturing a plastic packaging film based on a modified plastic masterbatch, comprising the following steps: Step 1: Input the masterbatch into the preliminary mixing box 53 through the masterbatch input pipe 52; Step 2: operating the stirring assembly 51 to preliminarily mix the masterbatch in the preliminary mixing box 53; Step 3: The mixed masterbatch enters the disinfection box 551 for the first ozone disinfection; Step 4: The sterilized masterbatch enters the step-by-step mixing box 571 through the material distribution box 553; Step 5: Additives of corresponding proportions are inputted into the first mixing chamber 572 through the additive input pipe 56 for first mixing; Step 6: Enter the second mixing chamber 574 for a second mixing; Step 7: Finally, enter the third mixing chamber 576 for the third mixing; Step 8: The fully mixed raw materials enter the extrusion assembly 6 for extrusion; Step nine: The extruded film is cooled and sterilized with ozone for the second time by the air ring 64; Step 10: After the traction device 2 tractions, the winding device 3 reels it.

[0047] Working principle of the present invention: During operation, the masterbatch is input into the preliminary mixing box 53 through the masterbatch input pipe 52, and then the stirring motor 511 is operated. The output shaft of the stirring motor 511 drives the main stirring rod 512 to rotate, and the stirring blade 513 performs preliminary mixing of the masterbatch. Then, the connecting pipe 54 is opened through the butterfly valve 59 to allow the mixed masterbatch to enter the disinfection box 551.

[0048] After entering the disinfection box 551, the masterbatch slowly slides down along the auger blade 552. At the same time, the ozone generated by the ozone generator 4 enters the disinfection box 551 through the ozone input port 554 for disinfection. The disinfected masterbatch enters the distribution box 553 through the bottom of the disinfection box 551, and then is diverted to the first mixing chamber 572, the second mixing chamber 574 and the third mixing chamber 576 in the progressive mixing box 571 through the first leakage port 555, the second leakage port 556 and the third leakage port 557 in a ratio of 1:2:4.

[0049] After diversion, additives of corresponding proportions are input into the first mixing chamber 572 through the additive input pipe 56 (the additives may be modified additives such as polylactic acid PLA, filler nano calcium carbonate, whitening agent titanium dioxide, etc.), and at the same time, the auxiliary stirring rod 516 is driven to rotate by the main stirring rod 512 through the transmission gear 514 and the driven gear 515, and the masterbatch and additives in the first mixing chamber 572 are mixed by the stirring blade 513, and then enter the second mixing chamber 574 and the third mixing chamber 576 through the first feed pipe 573 and the second feed pipe 575 in turn to be mixed with the masterbatch diverted thereto, and finally enter the extrusion assembly 6 through the third feed pipe 577 and the discharge pipe 578.

[0050] At this time, the drive motor 61 is operated, and the output shaft of the drive motor 61 drives the screw rod 65 to rotate in the heating pipe 62. The mixed material is heated and extruded through the heating pipe 62 and then formed inside the die head 63. It is then cooled by the air ring 64 and sterilized by secondary ozone. Finally, it is pulled by the traction device 2 and rolled up by the winding device 3 to complete the manufacturing.

[0051] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A blown film device for manufacturing plastic packaging film based on modified plastic masterbatch, comprising a steel frame (1), a traction device (2) arranged on the top of the steel frame (1), a winding device (3) arranged on one side of the steel frame (1), an ozone generator (4) and an extrusion assembly (6) arranged below the steel frame (1), and a mixing mechanism (5) arranged above the extrusion assembly (6), characterized in that: The mixing mechanism (5) comprises a fixed frame (58) fixed on the ground, a material distribution component (55) is provided above the fixed frame (58), an equal amount mixing component (57) is provided below the material distribution component (55), a preliminary mixing box (53) is connected above the material distribution component (55), and a stirring component (51) is provided above the preliminary mixing box (53); The material distribution assembly (55) comprises a material distribution box (553) fixedly mounted above the fixed frame (58); a disinfection box (551) is fixedly mounted above the material distribution box (553); an inner wall of the disinfection box (551) is connected to an auger blade (552); a first material leakage port (555), a second material leakage port (556) and a third material leakage port (557) are provided inside the material distribution box (553); the first material leakage port (555), the second material leakage port (556) and the third material leakage port (557) are all arranged directly below the lower leakage port of the disinfection box (551).

2. The film blowing device for manufacturing plastic packaging film based on modified plastic masterbatch according to claim 1, characterized in that: The equal amount mixing assembly (57) comprises a progressive mixing box (571) fixedly installed below the material distribution box (553), and a first mixing chamber (572), a second mixing chamber (574) and a third mixing chamber (576) are provided inside the progressive mixing box (571), and the first mixing chamber (572), the second mixing chamber (574) and the third mixing chamber (576) are respectively connected to the first material leakage port (555), the second material leakage port (556) and the third material leakage port (557).

3. The film blowing device for manufacturing plastic packaging film based on modified plastic masterbatch according to claim 2, characterized in that: A first material delivery pipe (573) is connected between the first mixing chamber (572) and the second mixing chamber (574), a second material delivery pipe (575) is connected between the second mixing chamber (574) and the third mixing chamber (576), a third material delivery pipe (577) is connected below the third mixing chamber (576), an end of the third material delivery pipe (577) away from the third mixing chamber (576) is connected to the interior of the incremental mixing box (571), and a discharge pipe (578) is connected below the incremental mixing box (571).

4. The film blowing device for manufacturing plastic packaging film based on modified plastic masterbatch according to claim 3, characterized in that: The stirring assembly (51) comprises auxiliary stirring rods (516) arranged inside the first mixing chamber (572), the second mixing chamber (574) and the third mixing chamber (576), and a main stirring rod (512) arranged inside the preliminary mixing box (53), and the outer walls of the plurality of auxiliary stirring rods (516) and the main stirring rod (512) are connected to stirring blades (513) of varying numbers.

5. The film blowing device for manufacturing plastic packaging film based on modified plastic masterbatch according to claim 4, characterized in that: The stirring assembly (51) further comprises a stirring motor (511) fixedly mounted on the top of the preliminary mixing box (53); an output shaft of the stirring motor (511) is connected to the main stirring rod (512); a transmission gear (514) is connected to an outer wall of one end of the main stirring rod (512) away from the stirring motor (511); and driven gears (515) with different numbers of teeth are connected to the outer walls of one end of the first mixing chamber (572), the second mixing chamber (574) and the third mixing chamber (576) close to the stirring motor (511); and a plurality of driven gears (515) are meshed with the transmission gear (514).

6. The film blowing device for manufacturing plastic packaging film based on modified plastic masterbatch according to claim 3, characterized in that: A connecting pipe (54) is connected between the preliminary mixing box (53) and the disinfection box (551), and butterfly valves (59) are fixedly installed in the middle sections of the connecting pipe (54), the first material conveying pipe (573), the second material conveying pipe (575), and the third material conveying pipe (577).

7. The film blowing device for manufacturing plastic packaging film based on modified plastic masterbatch according to claim 6, characterized in that: The interior of the preliminary mixing box (53) is connected to a masterbatch input pipe (52), and the interior of the first mixing chamber (572) is connected to an additive input pipe (56).

8. The film blowing device for manufacturing plastic packaging film based on modified plastic masterbatch according to claim 3, characterized in that: The extrusion assembly (6) comprises a driving motor (61) and a die head (63) fixed on the ground, a heating pipe (62) being connected between the driving motor (61) and the die head (63), a spiral rod (65) being provided on an output shaft sleeve of the driving motor (61), the spiral rod (65) being arranged inside the heating pipe (62), the inside of the heating pipe (62) being connected to an end of the discharge pipe (578) close to the spiral rod (65), and an air ring (64) being provided on the top of the die head (63).

9. The film blowing device for manufacturing plastic packaging film based on modified plastic masterbatch according to claim 8, characterized in that: Two ozone output pipes are provided outside the ozone generating device (4), and an ozone input port (554) is provided on the outer wall of the disinfection box (551), wherein one of the ozone output pipes is connected to the interior of the disinfection box (551) through the ozone input port (554), and the other ozone output pipe is connected to the interior of the air ring (64).

10. A method for manufacturing a film blowing device for manufacturing a plastic packaging film based on a modified plastic masterbatch, using the film blowing device for manufacturing a plastic packaging film based on a modified plastic masterbatch as claimed in any one of claims 2 to 9, characterized in that: The following steps are involved: Step 1: inputting the masterbatch into the preliminary mixing box (53) through the masterbatch input pipe (52); Step 2: operating the stirring component (51) to preliminarily mix the masterbatch in the preliminary mixing box (53); Step 3: The mixed masterbatch enters the disinfection box (551) for the first ozone disinfection; Step 4: The sterilized masterbatch enters the step-by-step mixing box (571) through the material distribution box (553); Step 5: Additives in corresponding proportions are inputted into the first mixing chamber (572) through the additive input pipe (56) for first mixing; Step 6: Entering the second mixing chamber (574) for a second mixing; Step 7: Finally, the mixture enters the third mixing chamber (576) for a third mixing; Step 8: The fully mixed raw materials enter the extrusion component (6) for extrusion; Step nine: cooling the extruded film by the air ring (64) and performing a second ozone sterilization; Step 10: After being pulled by the pulling device (2), the winding device (3) reels it up.

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