A blown film device and method for manufacturing a plastic packaging film based on a modified plastic masterbatch

Abstract

The present invention relates to the technical field of plastic packaging film manufacturing, and discloses a blown film device and method for manufacturing a plastic packaging film based on a modified plastic masterbatch. Among them, a blown film device for manufacturing a plastic packaging film based on a modified plastic masterbatch includes a steel frame, a traction device arranged on the top of the steel frame, a coiling device arranged on one side of the steel frame, an ozone generating device and an extrusion assembly arranged below the steel frame, and a mixing mechanism arranged above the extrusion assembly. Through the arranged material distribution assembly and equal - amount mixing assembly, the masterbatch and additives in the first mixing chamber are mixed by the stirring assembly, and then enter the second mixing chamber and the third mixing chamber through the first feeding pipe and the second feeding pipe in sequence to be mixed with the masterbatch shunted to them, and finally enter the extrusion assembly through the third feeding pipe and the discharging pipe. By using the equal - amount progressive mixing method, the effects of improving production efficiency and meeting specific application requirements are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of plastic packaging film manufacturing, and particularly to a plastic packaging film manufacturing blown film device and method based on modified plastic masterbatch. Background Art

[0002] A blown film device for manufacturing plastic packaging film based on modified plastic masterbatch is a mechanical device for producing plastic films, which uses modified plastic masterbatch as the main raw material. The plastic blown film machine heats and melts the plastic raw materials, then uses high-pressure air to blow them into films, and finally completes the production through processes such as cooling, traction, and winding. This device has the advantages of high efficiency, flexibility, low cost, etc. The produced films are widely used in multiple fields such as packaging, agriculture, and food. With the continuous development of technology, the blown film machine is also constantly improved and innovated to meet the market's demand for high-quality films.

[0003] In the patent with the patent publication number CN108908917A, a blown film device for manufacturing plastic packaging film that is convenient for fixing is disclosed, including a first motor. The left side of the first motor is provided with a barrel. Electric heating rods are installed at both the upper and lower ends inside the barrel. The left side of the barrel is connected to a material barrel, and a central rod is welded inside the material barrel. The upper end of the central rod is connected to an air ring. A blower is provided in front of the material barrel. A baffle is provided above the material barrel. A frame is provided outside the material barrel. A rotating shaft is installed at the top of the baffle. A second motor is provided on the upper surface of the frame. A clamping plate is installed inside the chute. A coiling rack is provided on the left side of the frame. This blown film device for manufacturing plastic packaging film that is convenient for fixing can quickly melt plastic pellets, improve work efficiency, make the plastic cool evenly, improve the quality of the plastic, prevent the plastic from shaking, and facilitate fixing the plastic.

[0004] The existing technology has the following defects:

[0005] It is impossible to fully mix multiple masterbatches and multiple additives: The performance of existing mixing equipment is poor, and there are large differences in the physical properties (such as particle size, density, viscosity, etc.) between raw materials, increasing the mixing difficulty, making it difficult for some raw materials to be evenly dispersed. As a result, there is a phenomenon of uneven local composition in the mixture, increasing the rejection rate during the production process. Therefore, a device for multiple mixing needs to be set up, and the equal increment mixing method is used to fully mix multiple masterbatches and multiple additives, improving the mechanical strength, heat resistance, wear resistance, and even electrical conductivity of the mixture, etc., to achieve the effects of improving production efficiency and meeting specific application requirements.

[0006] Lack of disinfection of raw materials and the cooling stage: To protect the environment, recycled plastics are commonly used as masterbatches. Masterbatches may carry various microorganisms, including pathogenic bacteria. If used directly without disinfection, it will contaminate the entire production line, which will not only affect the quality of the products but also pose a threat to the health of consumers and cause food safety problems. Therefore, it is necessary to set up an ozone disinfection device for raw materials and the cooling stage. Ozone disinfection of raw materials can effectively kill the carried microorganisms and prevent them from contaminating the products during the production process. Disinfection of the cooling stage can further eliminate potential pollution sources and ensure that the products are not contaminated in the final stage, achieving the effect of improving the hygienic quality and safety of the products. Summary of the Invention

[0007] In view of the problems in the prior art that it is impossible to fully mix multiple masterbatches and multiple additives and lack of disinfection of raw materials and the cooling stage, a blown film device and method for manufacturing plastic packaging films based on modified plastic masterbatches are proposed.

[0008] On the one hand, the present application provides a blown film device for manufacturing plastic packaging films based on modified plastic masterbatches, and its purpose is: through the set mixing mechanism, using the equal increment mixing method, to fully mix multiple masterbatches and multiple additives, enhancing the mechanical strength, heat resistance, wear resistance and even electrical conductivity of the mixture, etc., achieving the effect of improving production efficiency and meeting specific application requirements. Through the set ozone generating device, ozone disinfection of raw materials can effectively kill the carried microorganisms and prevent them from contaminating the products during the production process. Disinfection of the cooling stage can further eliminate potential pollution sources and ensure that the products are not contaminated in the final stage, achieving the effect of improving the hygienic quality and safety of the products.

[0009] The technical solution of the present invention is: A blown film device for manufacturing plastic packaging films based on modified plastic masterbatches, including 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 generating device and an extrusion assembly arranged below the steel frame, and a mixing mechanism arranged above the extrusion assembly. The mixing mechanism includes a fixed frame fixed on the ground. Above the fixed frame, there is a material distribution component. Below the material distribution component, there is an equal amount mixing component. Above the material distribution component, there is a preliminary mixing tank connected. Above the preliminary mixing tank, there is a stirring component;

[0010] The material distribution component includes a material distribution box fixedly installed above the fixed frame. Above the material distribution box, there is a disinfection box fixedly installed. The inner wall of the disinfection box is connected with auger blades. Inside the material distribution box, there are a first material leakage port, a second material leakage port and a third material leakage port. 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.

[0011] With the above solution, after the masterbatch enters the disinfection chamber through the set material distribution component, it slowly slides down along the auger blades. At the same time, the ozone generating device generates ozone and enters the disinfection chamber for disinfection. The disinfected masterbatch enters the material distribution box from the bottom of the disinfection chamber, and then is divided into the equal - quantity mixing component through the first material leakage port, the second material leakage port and the third material leakage port at a ratio of 1:2:4, playing the role of automatic proportioning.

[0012] Furthermore, the equal - quantity mixing component includes an incremental mixing box fixedly installed below the material distribution box. The interior of the incremental mixing box is provided with a first mixing chamber, a second mixing chamber and a third mixing chamber. The first mixing chamber, the second mixing chamber and the third mixing chamber are respectively communicated with the first material leakage port, the second material leakage port and the third material leakage port.

[0013] Furthermore, a first feeding pipe is connected between the first mixing chamber and the second mixing chamber, a second feeding pipe is connected between the second mixing chamber and the third mixing chamber, a third feeding pipe is connected below the third mixing chamber, one end of the third feeding pipe far from the third mixing chamber is communicated with the interior of the incremental mixing box, and a discharging pipe is connected below the incremental mixing box.

[0014] With the above solution, after the masterbatch is divided into the first mixing chamber, the second mixing chamber and the third mixing chamber inside the incremental mixing box through the set equal - quantity mixing component, additives in corresponding proportions are added to the first mixing chamber. The stirring component mixes the masterbatch and additives in the first mixing chamber, and then sequentially enters the second mixing chamber and the third mixing chamber through the first feeding pipe and the second feeding pipe to be mixed with the masterbatch diverted into them. Finally, it enters the extrusion component through the third feeding pipe and the discharging pipe. Using the equal - quantity incremental mixing method, various masterbatches and various additives are fully mixed, achieving the effects of improving production efficiency and meeting specific application requirements.

[0015] Furthermore, the stirring component 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. The outer walls of multiple auxiliary stirring rods and the main stirring rod are all connected with unequal numbers of stirring blades.

[0016] Furthermore, the stirring component further 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 end of the main stirring rod far from the stirring motor. The outer walls of the first mixing chamber, the second mixing chamber and the third mixing chamber near the stirring motor are all connected with driven gears with different numbers of teeth. Multiple driven gears are all meshed with the transmission gear.

[0017] With the above solution, when stirring the masterbatch in the preliminary mixing tank by means of the provided stirring assembly, the stirring motor is operated. The output shaft of the stirring motor drives the main stirring rod to rotate, and the masterbatch is preliminarily mixed by the stirring blades. When stirring the mixture in the progressive mixing tank, the main stirring rod drives the secondary stirring rod to rotate through the driving gear and the driven gear, and the masterbatch and additives in the first mixing chamber are mixed by the stirring blades, which serves to provide stirring power.

[0018] Further, a connecting pipe is connected between the preliminary mixing tank and the disinfection tank, and butterfly valves are fixedly installed in the middle sections of the connecting pipe, the first feeding pipe, the second feeding pipe, and the third feeding pipe.

[0019] Further, a masterbatch input pipe communicates with the inside of the preliminary mixing tank, and an additive input pipe communicates with the inside of the first mixing chamber.

[0020] With the above solution, by means of the provided connecting pipe, first feeding pipe, second feeding pipe, third feeding pipe, and the corresponding butterfly valves, the function of controlling the flow is achieved.

[0021] Further, the extrusion assembly includes a driving motor and a die head fixed to the ground. A heating pipe is connected between the driving motor and the die head. A spiral rod is sleeved on the output shaft of the driving motor, and the spiral rod is arranged inside the heating pipe. The inside of the heating pipe communicates with one end of the discharge pipe close to the spiral rod, and an air ring is provided at the top of the die head.

[0022] With the above solution, by means of the provided extrusion assembly, the driving motor is operated. The output shaft of the driving motor drives the spiral rod to rotate in the heating pipe. The mixture is heated and extruded through the heating pipe and formed inside the die head, and then cooled by the air ring and subjected to secondary ozone disinfection. Finally, it is wound by the coiling device after being pulled by the traction device, which serves to perform extrusion molding.

[0023] Further, two ozone output pipes are provided outside the ozone generating device, and an ozone input port is formed on the outer wall of the disinfection tank. One of the ozone output pipes communicates with the inside of the disinfection tank through the ozone input port, and the other ozone output pipe communicates with the inside of the air ring.

[0024] With the above solution, by means of the provided ozone generating device, disinfecting the raw materials with ozone can effectively kill the carried microorganisms and prevent them from contaminating the products during the production process. Disinfecting the cooling stage can further eliminate potential pollution sources and ensure that the products are not contaminated in the final stage, achieving the effect of improving the hygienic quality and safety of the products.

[0025] 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:

[0026] Step 1: Input the masterbatch into the preliminary mixing box through the masterbatch input pipe;

[0027] Step 2: operating the stirring component to preliminarily mix the masterbatch in the preliminary mixing box;

[0028] Step 3: The mixed masterbatch enters the disinfection box for the first ozone disinfection;

[0029] Step 4: The sterilized masterbatch enters the progressive mixing box through the material distribution box;

[0030] Step 5: Inputting additives of corresponding proportions into the first mixing chamber through the additive input pipe for first mixing;

[0031] Step 6: Enter the second mixing chamber for a second mixing;

[0032] Step 7: Finally, enter the third mixing chamber for the third mixing;

[0033] Step 8: The fully mixed raw materials enter the extrusion assembly for extrusion;

[0034] Step 9: The extruded film is cooled by the air ring and sterilized with ozone for the second time;

[0035] Step 10: After the traction device tractions, the winding device reels it.

[0036] Adopting the above scheme, the masterbatch is input into the preliminary mixing tank through the masterbatch input pipe. Then, the stirring motor is operated. The output shaft of the stirring motor drives the main stirring rod to rotate, and the masterbatch is preliminarily mixed by the stirring blades. Then, the connecting pipe is opened by the butterfly valve, and the mixed masterbatch enters the disinfection tank. After the masterbatch enters the disinfection tank, it slowly slides down along the auger blades. At the same time, the ozone generating device generates ozone, which enters the disinfection tank through the ozone input port for disinfection. The disinfected masterbatch enters the distribution tank from the bottom of the disinfection tank, and then is divided into the first mixing chamber, the second mixing chamber, and the third mixing chamber inside the progressive mixing tank at a ratio of 1:2:4 through the first leakage port, the second leakage port, and the third leakage port. After the distribution, the corresponding proportion of additives is input into the first mixing chamber through the additive input pipe. At the same time, the main stirring rod drives the auxiliary stirring rod to rotate through the driving gear and the driven gear, and the stirring blades mix the masterbatch and the additives in the first mixing chamber. Then, it enters the second mixing chamber and the third mixing chamber through the first feeding pipe and the second feeding pipe in sequence to be mixed with the distributed masterbatch. Finally, it enters the extrusion assembly through the third feeding pipe and the discharging pipe. At this time, the driving motor is operated, and the output shaft of the driving motor drives the screw rod to rotate in the heating pipe. The mixed material is heated and extruded in the heating pipe and formed inside the die head. Then, it is cooled by the air ring and subjected to secondary ozone disinfection. Finally, it is wound by the coiling device after being pulled by the traction device, completing the manufacturing.

[0037] Advantages of the present invention:

[0038] Through the provided distribution component and equal - quantity mixing component, after the masterbatch is divided into the first mixing chamber, the second mixing chamber, and the third mixing chamber inside the progressive mixing tank at a ratio of 1:2:4 through the first leakage port, the second leakage port, and the third leakage port, the corresponding proportion of additives is added to the first mixing chamber. The stirring component mixes the masterbatch and the additives in the first mixing chamber. Then, it enters the second mixing chamber and the third mixing chamber through the first feeding pipe and the second feeding pipe in sequence to be mixed with the distributed masterbatch. Finally, it enters the extrusion assembly through the third feeding pipe and the discharging pipe. Using the equal - quantity progressive mixing method, various masterbatches and various additives are fully mixed, achieving the effects of improving production efficiency and meeting specific application requirements.

[0039] Through the provided ozone generating device, disinfection tank, and air ring, the ozone generating device generates ozone and enters the disinfection tank for disinfection. The disinfected masterbatch enters the distribution tank from the bottom of the disinfection tank. The mixed material is heated and extruded in the heating pipe and formed inside the die head. Then, it is cooled by the air ring and subjected to secondary ozone disinfection. Disinfecting the raw materials with ozone can effectively kill the carried microorganisms and prevent them from contaminating the products during the production process. Disinfecting the cooling stage can further eliminate potential pollution sources, ensuring that the products are not contaminated in the final stage, achieving the effects of improving the hygienic quality and safety of the products.

[0040] When stirring the masterbatch in the preliminary mixing tank through the set stirring component, the stirring motor is operated. The output shaft of the stirring motor drives the main stirring rod to rotate, and the masterbatch is preliminarily mixed by the stirring blades. When stirring the mixture in the progressive mixing tank, the main stirring rod drives the auxiliary stirring rod to rotate through the driving gear and the driven gear, and the masterbatch and additives in the first mixing cavity are mixed by the stirring blades, which plays a role in providing stirring power. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0042] Figure 2 It is a schematic diagram of the structure at the ozone generating device of the present invention;

[0043] Figure 3 It is a schematic diagram of the structure at the mixing mechanism of the present invention;

[0044] Figure 4 It is a partial schematic diagram of the structure at the stirring component of the present invention;

[0045] Figure 5 It is a partial schematic diagram of the structure at the material distribution component of the present invention;

[0046] Figure 6 It is a partial schematic diagram of the structure at the ozone input port of the present invention;

[0047] Figure 7 It is a partial schematic diagram of the structure at the leakage port of the present invention;

[0048] Figure 8 It is a partial schematic diagram of the structure at the equal - amount mixing component of the present invention;

[0049] Figure 9 It is a partial schematic diagram of the structure at the discharge pipe of the present invention;

[0050] Figure 10 It is a partial schematic diagram of the structure at the screw rod of the present invention.

[0051] In the figure:

[0052] 1. Steel frame; 2. Traction device; 3. Coiling device; 4. Ozone generating device; 5. Mixing mechanism; 51. Stirring assembly; 511. Stirring motor; 512. Main stirring rod; 513. Stirring blades; 514. Driving gear; 515. Driven gear; 516. Sub-stirring rod; 52. Masterbatch input pipe; 53. Preliminary mixing tank; 54. Connecting pipe; 55. Feeding component; 551. Disinfection tank; 552. Screw blade; 553. Feeding 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 tank; 572. First mixing chamber; 573. First feeding pipe; 574. Second mixing chamber; 575. Second feeding pipe; 576. Third mixing chamber; 577. Third feeding pipe; 578. Discharge pipe; 58. Fixed frame; 59. Butterfly valve; 6. Extrusion component; 61. Driving motor; 62. Heating pipe; 63. Die head; 64. Air ring; 65. Screw rod. Detailed implementation manners

[0053] To make the above objects, features, and advantages of the present invention more obvious and understandable, the following provides a detailed description of the specific implementation manners of the present invention with reference to the accompanying drawings of the specification.

[0054] Example 1, referring to Figure 1 - Figure 10 , which is the first embodiment of the present invention, provides a blown film device for manufacturing plastic packaging films based on modified plastic masterbatch, including a steel frame 1, a traction device 2 arranged on the top of the steel frame 1, a coiling device 3 arranged on one side of the steel frame 1, an ozone generating device 4 arranged below the steel frame 1, and an extrusion component 6, as well as a mixing mechanism 5 arranged above the extrusion component 6. The mixing mechanism 5 includes a fixed frame 58 fixed to the ground. Above the fixed frame 58, there is a feeding component 55. Below the feeding component 55, there is an equal mixing component 57. Above the feeding component 55, there is a preliminary mixing tank 53 connected. Above the preliminary mixing tank 53, there is a stirring assembly 51.

[0055] Referring to Figure 5 - Figure 9 , the feeding component 55 includes a feeding box 553 fixedly installed above the fixed frame 58. Above the feeding box 553, there is a disinfection tank 551 fixedly installed. The inner wall of the disinfection tank 551 is connected with a screw blade 552. Inside the feeding box 553, there are a first leakage port 555, a second leakage port 556, and a third leakage port 557. The first leakage port 555, the second leakage port 556, and the third leakage port 557 are all directly below the lower leakage port of the disinfection tank 551.

[0056] Specifically, the basic processing flow of the blown film device for manufacturing plastic packaging film is as follows: The mixing mechanism 5 performs batching, stirring and mixing, and disinfection. The extrusion assembly 6 melts and blows the film. The traction device 2 and the coiling device 3 wind up the film. During disinfection, ozone is generated by the ozone generating device 4 to disinfect the raw materials and the cooling stage respectively; the auger blade 552 can be replaced according to the disinfection efficiency of ozone to balance the disinfection effect and efficiency. When the masterbatch falls from the disinfection tank 551 into the distribution tank 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.

[0057] Through the arranged distribution assembly 55, after the masterbatch enters the disinfection tank 551, it slowly slides down along the auger blade 552. At the same time, the ozone generating device 4 generates ozone and enters the disinfection tank 551 for disinfection. The disinfected masterbatch enters the distribution tank 553 from the bottom of the disinfection tank 551, and then is divided into the equal - quantity mixing assembly 57 through the first leakage port 555, the second leakage port 556 and the third leakage port 557 in a ratio of 1:2:4, playing the role of automatic proportioning.

[0058] Refer to Figure 8 - Figure 9 The equal - quantity mixing assembly 57 includes an incremental mixing tank 571 fixedly installed below the distribution tank 553. The interior of the incremental mixing tank 571 is provided with a first mixing chamber 572, a second mixing chamber 574 and a third mixing chamber 576. The first mixing chamber 572, the second mixing chamber 574 and the third mixing chamber 576 are respectively communicated with the first leakage port 555, the second leakage port 556 and the third leakage port 557. A first feed pipe 573 is connected between the first mixing chamber 572 and the second mixing chamber 574. A second feed pipe 575 is connected between the second mixing chamber 574 and the third mixing chamber 576. The lower part of the third mixing chamber 576 is connected with a third feed pipe 577. One end of the third feed pipe 577 far from the third mixing chamber 576 is communicated with the interior of the incremental mixing tank 571. A discharge pipe 578 is connected below the incremental mixing tank 571.

[0059] Through the arranged equal - quantity mixing assembly 57, after the masterbatch is divided into the first mixing chamber 572, the second mixing chamber 574 and the third mixing chamber 576 inside the incremental mixing tank 571, corresponding proportion of additives are added into the first mixing chamber 572. The stirring assembly 51 mixes the masterbatch and the additives in the first mixing chamber 572, and then successively enters the second mixing chamber 574 and the third mixing chamber 576 through the first feed pipe 573 and the second feed pipe 575 to be mixed with the masterbatch diverted into them. Finally, it enters the extrusion assembly 6 through the third feed pipe 577 and the discharge pipe 578. Using the equal - quantity incremental mixing method, various masterbatches and various additives are fully mixed to achieve the effects of improving production efficiency and meeting specific application requirements.

[0060] Reference Figure 4 - Figure 5 Figure 4 - Figure 5 , the stirring assembly 51 includes a secondary stirring rod 516 disposed inside the first mixing chamber 572, the second mixing chamber 574, and the third mixing chamber 576, and a primary stirring rod 512 disposed inside the preliminary mixing tank 53. The outer walls of the plurality of secondary stirring rods 516 and the primary stirring rod 512 are each connected with a varying number of stirring blades 513. The stirring assembly 51 further includes a stirring motor 511 fixedly installed on the top of the preliminary mixing tank 53. The output shaft of the stirring motor 511 is connected to the primary stirring rod 512. A transmission gear 514 is connected to the outer wall of the end of the primary 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 near the stirring motor 511 are each connected with a driven gear 515 having different numbers of teeth. The plurality of driven gears 515 are each meshed with the transmission gear 514.

[0061] Specifically, the lengths of the plurality of secondary stirring rods 516 are not equal, and the length increases sequentially from the secondary stirring rod 516 in the first mixing chamber 572 to the secondary stirring rod 516 in the third mixing chamber 576. The stirring blades 513 connected to the plurality of secondary stirring rods 516 are also not equal, and the number of stirring blades 513 increases sequentially from the stirring blade 513 in the first mixing chamber 572 to the stirring blade 513 in the third mixing chamber 576. The number of teeth of the plurality of driven gears 515 is also not equal, but their module is the same as that of the transmission gear 514.

[0062] When stirring the masterbatch in the preliminary mixing tank 53 by means of the provided stirring assembly 51, the stirring motor 511 is operated. The output shaft of the stirring motor 511 drives the primary stirring rod 512 to rotate, and the masterbatch is preliminarily mixed by the stirring blades 513. When stirring the mixture in the progressive mixing tank 571, the secondary stirring rod 516 is driven to rotate by the primary stirring rod 512 via the transmission gear 514 and the driven gear 515, and the masterbatch and the additive in the first mixing chamber 572 are mixed by the stirring blades 513, serving as a power source for stirring.

[0063] Reference Figure 3 - Figure 10 Figure 3 - Figure 10 , a connecting pipe 54 is connected between the preliminary mixing tank 53 and the disinfection tank 551. Butterfly valves 59 are fixedly installed in the middle sections of the connecting pipe 54, the first feed pipe 573, the second feed pipe 575, and the third feed pipe 577. A masterbatch input pipe 52 communicates with the inside of the preliminary mixing tank 53, and an additive input pipe 56 communicates with the inside of the first mixing chamber 572.

[0064] By means of the provided connecting pipe 54, the first feed pipe 573, the second feed pipe 575, the third feed pipe 577, and the corresponding butterfly valves 59, the function of controlling the flow is achieved.

[0065] Reference Figure 2 - Figure 10, the extrusion assembly 6 includes a driving motor 61 fixed to the ground and a die head 63. A heating pipe 62 is connected between the driving motor 61 and the die head 63. A screw rod 65 is sleeved on the output shaft of the driving motor 61. The screw rod 65 is arranged inside the heating pipe 62. The inside of the heating pipe 62 is communicated with one end of the discharge pipe 578 close to the screw rod 65. An air ring 64 is arranged on the top of the die head 63.

[0066] By setting the extrusion assembly 6, the driving motor 61 is operated. The output shaft of the driving motor 61 drives the screw rod 65 to rotate in the heating pipe 62. The mixture is heated and extruded through the heating pipe 62 and then formed inside the die head 63. After being cooled and secondarily ozone-disinfected by the air ring 64, it is finally wound by the coiling device 3 after being pulled by the traction device 2, playing the role of extrusion molding.

[0067] Refer to Figure 2 , two ozone output pipes are arranged outside the ozone generating device 4. An ozone input port 554 is opened on the outer wall of the disinfection box 551. One of the ozone output pipes is communicated with the inside of the disinfection box 551 through the ozone input port 554, and the other ozone output pipe is communicated with the inside of the air ring 64.

[0068] By setting the ozone generating device 4, disinfecting the raw materials with ozone can effectively kill the carried microorganisms and prevent them from contaminating the products during the production process. Disinfecting the cooling stage can further eliminate potential pollution sources and ensure that the products are not contaminated in the final stage, achieving the effect of improving the hygienic quality and safety of the products.

[0069] During the use process, masterbatch is input into the preliminary mixing tank 53 through the masterbatch input pipe 52. Then, the stirring motor 511 is operated, and the output shaft of the stirring motor 511 drives the main stirring rod 512 to rotate. The masterbatch is preliminarily mixed by the stirring blades 513. Then, the connecting pipe 54 is opened through the butterfly valve 59, so that the mixed masterbatch enters the disinfection tank 551. After the masterbatch enters the disinfection tank 551, it slowly slides down along the auger blades 552. At the same time, the ozone generating device 4 generates ozone, which enters the disinfection tank 551 through the ozone input port 554 for disinfection. The disinfected masterbatch enters the distribution tank 553 from the bottom of the disinfection tank 551, and then is divided into the first mixing chamber 572, the second mixing chamber 574, and the third mixing chamber 576 inside the progressive mixing tank 571 at a ratio of 1:2:4 through the first leakage port 555, the second leakage port 556, and the third leakage port 557. After the distribution, the corresponding proportion of additives is input into the first mixing chamber 572 through the additive input pipe 56. 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. The masterbatch and additives in the first mixing chamber 572 are mixed by the stirring blades 513. Then, they enter the second mixing chamber 574 and the third mixing chamber 576 through the first feeding pipe 573 and the second feeding pipe 575 in sequence to be mixed with the distributed masterbatch. Finally, they enter the extrusion assembly 6 through the third feeding pipe 577 and the discharging pipe 578. At this time, the driving motor 61 is operated, and the output shaft of the driving motor 61 drives the screw rod 65 to rotate in the heating pipe 62. The mixed material is heated and extruded in the heating pipe 62 and formed inside the die head 63. Then, after being cooled by the air ring 64 and subjected to secondary ozone disinfection, it is finally wound by the winding device 3 after being pulled by the traction device 2, completing the manufacturing.

[0070] Example 2, referring to Figure 1 - Figure 10 , a manufacturing method of a blown film device for manufacturing a plastic packaging film based on a modified plastic masterbatch is provided. A blown film device for manufacturing a plastic packaging film based on a modified plastic masterbatch is adopted, which includes the following steps:

[0071] Step 1: Input masterbatch into the preliminary mixing tank 53 through the masterbatch input pipe 52;

[0072] Step 2: Operate the stirring assembly 51 to preliminarily mix the masterbatch in the preliminary mixing tank 53;

[0073] Step 3: The mixed masterbatch enters the disinfection tank 551 for the first ozone disinfection;

[0074] Step 4: The disinfected masterbatch enters the progressive mixing tank 571 through the distribution tank 553;

[0075] Step 5: Input the corresponding proportion of additives into the first mixing chamber 572 through the additive input pipe 56 for the first mixing;

[0076] Step Six: Then enter the second mixing chamber 574 for the second mixing;

[0077] Step Seven: Finally enter the third mixing chamber 576 for the third mixing;

[0078] Step Eight: The fully mixed raw materials enter the extrusion assembly 6 for extrusion;

[0079] Step Nine: Cool the extruded film by the air ring 64 and perform the second ozone disinfection;

[0080] Step Ten: After being pulled by the traction device 2, it is wound by the winding device 3.

[0081] The working principle of the present invention:

[0082] During operation, the masterbatch is input into the preliminary mixing tank 53 through the masterbatch input pipe 52. Then, the stirring motor 511 is operated, and the output shaft of the stirring motor 511 drives the main stirring rod 512 to rotate. The masterbatch is preliminarily mixed by the stirring blades 513. Then, the connecting pipe 54 is opened through the butterfly valve 59, and the mixed masterbatch enters the disinfection tank 551.

[0083] After the masterbatch enters the disinfection tank 551, it slowly slides down along the auger blades 552. At the same time, the ozone generating device 4 generates ozone, which enters the disinfection tank 551 through the ozone input port 554 for disinfection. The disinfected masterbatch enters the distribution tank 553 from the bottom of the disinfection tank 551, and then is divided into the first mixing chamber 572, the second mixing chamber 574, and the third mixing chamber 576 inside the progressive mixing tank 571 at a ratio of 1:2:4 through the first leakage port 555, the second leakage port 556, and the third leakage port 557.

[0084] After the diversion, the corresponding proportion of additives (the additives can be modified additive polylactic acid PLA, filler nano calcium carbonate, whitening agent titanium dioxide, etc.) are input into the first mixing chamber 572 through the additive input pipe 56. 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. The masterbatch and additives in the first mixing chamber 572 are mixed by the stirring blades 513. Then, they enter the second mixing chamber 574 and the third mixing chamber 576 through the first feeding pipe 573 and the second feeding pipe 575 in sequence to be mixed with the diverted masterbatch, and finally enter the extrusion assembly 6 through the third feeding pipe 577 and the discharge pipe 578.

[0085] At this time, the driving motor 61 is operated, and the output shaft of the driving 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 formed inside the die head 63. Then, it is cooled by the air ring 64 and undergoes secondary ozone disinfection. Finally, it is wound by the winding device 3 after being pulled by the traction device 2, completing the manufacturing.

[0086] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered by 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); The equal amount mixing assembly (57) comprises a progressive mixing box (571) fixedly installed below the material distribution box (553); a first mixing chamber (572), a second mixing chamber (574) and a third mixing chamber (576) are provided inside the progressive mixing box (571); 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); 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).

2. The film blowing device for manufacturing plastic packaging film based on modified plastic masterbatch according to claim 1, 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.

3. The film blowing device for manufacturing plastic packaging film based on modified plastic masterbatch according to claim 2, 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).

4. 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).

5. The film blowing device for manufacturing plastic packaging film based on modified plastic masterbatch according to claim 4, 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).

6. The film blowing device for manufacturing plastic packaging film based on modified plastic masterbatch according to claim 5, 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).

7. The film blowing device for manufacturing plastic packaging film based on modified plastic masterbatch according to claim 6, 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).

8. 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 claim 7, 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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