A PE plastic packaging bag production line and system

Abstract

The present invention relates to the field of plastic processing technology, and in particular to a PE plastic packaging bag production line and system, comprising a feeder and an extruder, wherein the extruder comprises a heating shell, a heating coil, a circulation shell, an extrusion shell, an insulation shell and an extrusion screw; the heating shell is arranged below the feeder, the circulation shell is arranged outside the heating shell, the heating coil is arranged between the heating shell and the circulation shell, the extrusion shell is communicated with the heating shell and is located on one side of the extrusion shell, the insulation shell is arranged outside the extrusion shell, the extrusion screw is rotatably arranged in the extrusion shell, and the circulation shell is communicated with the insulation shell, so that the material temperature control is more accurate during the extrusion process, while improving the energy utilization rate and the production quality.

Description

Technical Field

[0001] The present invention relates to the technical field of plastic processing, and in particular to a PE plastic packaging bag production line and system. Background Art

[0002] In existing PE plastic packaging bag production processes, raw material pellets are typically added by direct drop through a solenoid valve. While this method is simple and easy to operate, it has certain limitations in practice. Specifically, after the solenoid valve is opened, the raw material pellets fall directly into the conveying pipe or mixing device by gravity, lacking an effective airflow-assisted dispersion mechanism. This makes it difficult to effectively eliminate particle agglomeration.

[0003] During the raw material transportation process, a uniform and stable airflow was not fully introduced to blow and disperse the particles, so that the tiny dust and impurities attached to the surface of the raw materials could not be effectively removed. At the same time, during the extrusion process, the extrusion shell was not heated, which caused the raw materials to cool down during movement and reduced fluidity, resulting in uneven material distribution and reduced production quality. Summary of the Invention

[0004] The purpose of the present invention is to provide a PE plastic packaging bag production line and system, aiming to make the material temperature control more accurate during the extrusion process, while improving energy utilization and production quality.

[0005] To achieve the above-mentioned objectives, in a first aspect, the present invention provides a PE plastic packaging bag production line, comprising a feeder and an extruder, the extruder comprising a heating shell, a heating coil, a circulation shell, an extrusion shell, an insulation shell and an extrusion screw; the heating shell is arranged below the feeder, the circulation shell is arranged outside the heating shell, the heating coil is arranged between the heating shell and the circulation shell, the extrusion shell is connected to the heating shell and is located on one side of the extrusion shell, the insulation shell is arranged outside the extrusion shell, the extrusion screw is rotatably arranged in the extrusion shell, and the circulation shell is connected to the insulation shell.

[0006] The heating shell includes a shell, a stirring structure and an exhaust pipe. The stirring structure is arranged inside the shell, and the exhaust pipe is arranged above the shell.

[0007] In which, the stirring structure includes a stirring rod, a stirring motor, a stirring blade and a circulation blade. The stirring rod is rotatably arranged in the heating shell and passes through the circulation shell. The output end of the stirring motor is connected to the stirring rod. The stirring blade is fixedly connected to the stirring rod and is located in the heating shell. The circulation blade is fixedly connected to the stirring rod and is located in the circulation shell.

[0008] Wherein, the stirring structure further includes a first sealing sleeve and a second sealing sleeve, the first sealing sleeve is arranged between the stirring rod and the heating shell, and the second sealing sleeve is arranged between the stirring rod and the circulation shell.

[0009] The extruded shell includes an extruded shell body and a plurality of heat-conducting strips. The extruded shell body has a plurality of placement grooves, and the plurality of heat-conducting strips are respectively arranged in the plurality of placement grooves.

[0010] Wherein, the extruder further includes a microwave heater, and the microwave heater is arranged on one side of the circulation shell.

[0011] Wherein, the loader includes a base, a raw material box, a discharge plate, a support plate, a rotator, a bottom plate, a connecting pipe, a fan, a dust collector and a receiving plate. The discharge plate is arranged at the bottom of the raw material box, the support plate is provided with multiple air outlets, the support plate is rotatably arranged on one side of the discharge plate, the rotator is used to drive the support plate to rotate, a plurality of air ducts are provided on the bottom plate, the bottom plate is arranged at the bottom of the support plate, the connecting pipe is connected to the bottom plate, the fan is arranged in the connecting pipe, the receiving plate is arranged on one side of the support plate, and the dust collector is arranged above the support plate.

[0012] Wherein, the discharge plate includes a discharge plate body, a sliding plate and an adjusting screw. The sliding plate is slidingly arranged on the discharge plate body. The adjusting screw is threadedly connected to the sliding plate and is rotationally connected to the discharge plate body.

[0013] Among them, the discharge plate also includes a pressure plate, a brush roller and a drive motor. The pressure plate is slidably arranged on the discharge plate body. The brush roller is rotatably connected to the pressure plate and is located above the pressure plate. The output end of the drive motor is connected to the brush roller.

[0014] In a second aspect, the present invention further provides a PE plastic packaging bag production system, including the above-mentioned PE plastic packaging bag production line.

[0015] The present invention relates to a PE plastic packaging bag production line and system, wherein the feeder automatically transports PE granules to subsequent processing steps. The extruder's heating shell is located below the feeder and is equipped with a heating element inside. This is used to heat and melt the PE granules transported from the feeder, converting them from a solid state to a molten state to facilitate subsequent molding and processing. A circulation shell is provided on the outside of the heating shell, forming a closed circulation space between the circulation shell and the heating shell. A heating coil is embedded between the heating shell and the circulation shell to provide a stable heat source, thereby maintaining a constant temperature inside the heating shell. Simultaneously, the design of the circulation shell facilitates uniform distribution and efficient utilization of heat, thereby improving energy efficiency and reducing heat loss. The extrusion shell is connected to the heating shell and is located on one side of the heating shell. It is a key part for further plasticization and quantitative extrusion of the PE melt. An extrusion screw is installed in the extrusion shell. The screw is driven to rotate by a motor, pushing the heated molten PE material forward and extruding it evenly under high pressure. The extrusion screw has a reasonable structural design and excellent mixing and conveying performance, ensuring the stable quality of the plastic melt. To prevent heat loss and maintain the operating temperature of the extrusion shell, it is wrapped with an insulation shell. This not only provides insulation but also enhances equipment safety, preventing burns for operators. Furthermore, the insulation shell is connected to the circulation shell, forming an integrated thermal circulation system. Heat generated by the heating coils insulates the entire extrusion shell, enabling more accurate temperature control during the extrusion process and improving energy efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 This is a structural diagram of a PE plastic packaging bag production line of the present invention.

[0018] Figure 2 It is a cross-sectional structural diagram of a PE plastic packaging bag production line of the present invention.

[0019] Figure 3 yes Figure 2 A partial enlarged view of detail T.

[0020] Figure 4 It is a structural diagram of a loader of the present invention.

[0021] Figure 5 It is a longitudinal sectional structural diagram of the loader of the present invention.

[0022] Figure 6 yes Figure 2 A partial enlargement of detail A.

[0023] Figure 7 It is a transverse cross-sectional structural diagram of the feeder of the present invention.

[0024] Figure 8 yes Figure 4 A partial enlargement of detail B.

[0025] Figure 9 It is a cross-sectional structural diagram of the loader of the present invention along the push roller.

[0026] Figure 10 It is a partial structural diagram of the loader of the present invention.

[0027] Figure 11 yes Figure 7 A partial enlargement of detail C.

[0028] Heating shell 10, heating coil 11, circulation shell 12, extrusion shell 13, insulation shell 14, extrusion screw 15, shell 16, stirring structure 17, exhaust pipe 18, stirring rod 19, stirring motor 20, stirring blade 21, circulation blade 22, first sealing sleeve 23, second sealing sleeve 24, extrusion shell body 25, heat conducting strip 26, placement groove 27, microwave heater 28, base 101, raw material box 102, discharge plate 103, support plate 104, rotator 105, bottom plate 106, connecting pipe 107, fan 108, vacuum cleaner 109, receiving plate 110, discharge plate body 111, sliding plate 112, adjusting screw 113, pressing plate 114, brush roller 115, driving motor 116, pushing roller 117, first friction wheel 118, second friction wheel 119, pushing motor 120, elastic member 121, partition 122, flexible connecting belt 123, rotating disk 124, connecting rod 125, rotating motor 126, sliding block 127, bottom plate body 128, cover plate 129, buckle 130, tube body 131, filter 132, inertial sweeping brush 133, sweeping brush body 134, counterweight block 135, gear 136, rack 137, slider body 138. DETAILED DESCRIPTION

[0029] The following describes embodiments of the present invention in detail, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and are not to be construed as limiting the present invention.

[0030] In the description of the present invention, it should be understood that the terms "length," "width," "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inside," "outside," and the like, indicating positions or location relationships, are based on the positions or location relationships shown in the accompanying drawings and are intended only to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present invention. Furthermore, in the description of the present invention, "plurality" means two or more, unless otherwise expressly and specifically defined.

[0031] First embodiment:

[0032] See also Figures 1 to 11 The present invention provides a PE plastic packaging bag production line, including a feeder and an extruder, the extruder including a heating shell 10, a heating coil 11, a circulation shell 12, an extrusion shell 13, an insulation shell 14 and an extrusion screw 15; the heating shell 10 is arranged below the feeder, the circulation shell 12 is arranged outside the heating shell 10, the heating coil 11 is arranged between the heating shell 10 and the circulation shell 12, the extrusion shell 13 is connected to the heating shell 10 and is located on one side of the extrusion shell 13, the insulation shell 14 is arranged outside the extrusion shell 13, the extrusion screw 15 is rotatably arranged in the extrusion shell 13, and the circulation shell 12 is connected to the insulation shell 14.

[0033] In this embodiment, the function of the loader is to automatically transport the PE particles to subsequent processing links.

[0034] The heating shell 10 of the extruder is located below the feeder and is provided with a heating element inside the extruder for heating and melting the PE particles delivered from the feeder, so that they are transformed from a solid state to a molten state for subsequent molding processing.

[0035] A circulation shell 12 is located outside the heating shell 10, forming a closed circulation space between the shell 12 and the heating shell 10. A heating coil 11 is embedded between the heating shell 10 and the circulation shell 12, providing a stable heat source to maintain a constant temperature within the heating shell 10. The design of the circulation shell 12 also facilitates uniform heat distribution and efficient utilization, improving energy efficiency and reducing heat loss.

[0036] The extrusion housing 13, located on one side of the heating housing 10 and connected to the heating housing 10, is a key component for further plasticizing and quantitatively extruding the PE melt. Mounted within the extrusion housing 13 is an extrusion screw 15, which is driven by a motor to propel the heated molten PE material forward and extrudes it uniformly under high pressure. The rationally designed extrusion screw 15 offers excellent mixing and conveying performance, ensuring consistent quality of the plastic melt.

[0037] To prevent heat loss and maintain the operating temperature of the extrusion shell 13, the extrusion shell 13 is wrapped with an insulation shell 14. The insulation shell 14 not only provides thermal insulation but also enhances equipment safety, preventing burns to operators. Furthermore, the insulation shell 14 is connected to the circulation shell 12, forming an integrated thermal circulation system. This allows the heat generated by the heating coil 11 to insulate the entire extrusion shell 13, thereby enabling more accurate temperature control during the extrusion process and improving energy utilization.

[0038] The heating shell 10 includes a shell 16 , a stirring structure 17 , and an exhaust pipe 18 . The stirring structure 17 is disposed inside the shell 16 , and the exhaust pipe 18 is disposed above the shell 16 .

[0039] The heating shell 10 is a critical component in the extruder, responsible for the initial heating and melting of PE granules. Its structural design directly impacts the melting efficiency and subsequent molding quality of the raw materials. The shell 16 is made of a heat-resistant and wear-resistant metal material and contains a heating element that uniformly heats the PE granules entering the shell 10, promoting their softening and gradual melting. The exterior of the shell 16 cooperates with the heating coil 11 to achieve precise temperature control.

[0040] A stirring structure 17 within housing 16 is specifically designed to improve heating efficiency and melt uniformity. An exhaust pipe 18 is located at the top of heating shell 10 to exhaust volatile gases, moisture, and other harmful gases generated during the heating process, preventing these gases from accumulating within heating shell 10 and affecting the quality of the PE material. Exhaust pipe 18 can be connected to a condenser or filtration system for environmentally friendly discharge.

[0041] The stirring structure 17 includes a stirring rod 19, a stirring motor 20, a stirring blade 21 and a circulation blade 22. The stirring rod 19 is rotatably arranged in the heating shell 10 and passes through the circulation shell 12. The output end of the stirring motor 20 is connected to the stirring rod 19. The stirring blade 21 is fixedly connected to the stirring rod 19 and is located in the heating shell 10. The circulation blade 22 is fixedly connected to the stirring rod 19 and is located in the circulation shell 12.

[0042] A stirring rod 19 is rotatably mounted within the heating shell 10 and extends into the outer circulation shell 12, serving as the core transmission component of the entire stirring system. A stirring motor 20 is fixed to one end of the heating shell 10, with its output shaft connected to the stirring rod 19, which is driven by the motor to rotate the stirring rod 19.

[0043] A plurality of stirring blades 21 are fixed to the stirring rod 19. These stirring blades 21 are located inside the heating shell 10 and are used to continuously stir the PE particles being heated, preventing material accumulation or uneven heating, thereby improving heating efficiency and melting quality. A plurality of circulation blades 22 are also fixed to the portion of the stirring rod 19 that extends into the circulation shell 12. These circulation blades 22 are located inside the circulation shell 12 and are used to promote the flow of the heat medium (such as thermal oil or air) within the circulation shell 12, enhancing the heat transfer efficiency and making the temperature distribution throughout the heating shell 10 more uniform.

[0044] The stirring structure 17 further includes a first sealing sleeve 23 and a second sealing sleeve 24 . The first sealing sleeve 23 is disposed between the stirring rod 19 and the heating shell 10 , and the second sealing sleeve 24 is disposed between the stirring rod 19 and the circulation shell 12 .

[0045] In order to ensure that the stirring rod 19 does not cause leakage between the heating shell 10 and the circulation shell 12 during the rotation process, the stirring structure 17

[0046] The first sealing sleeve 23 is arranged between the stirring rod 19 and the heating shell 10 to prevent the molten material or heat from leaking from the inside of the heating shell 10, thereby ensuring the safety and stability of the equipment operation; the second sealing sleeve 24 is arranged between the stirring rod 19 and the circulation shell 12 to prevent the heat medium in the circulation shell 12 from leaking out, while preventing external impurities from entering the system and affecting the normal operation of the equipment.

[0047] The extruded shell 13 includes an extruded shell body 25 and a plurality of heat-conducting strips 26 . The extruded shell body 25 has a plurality of placement grooves 27 , and the plurality of heat-conducting strips 26 are respectively disposed in the plurality of placement grooves 27 .

[0048] The extrusion shell body 25 is made of high-strength, high-temperature-resistant and wear-resistant alloy steel. A through hole is provided inside for the installation of the extrusion screw 15, and it is connected to the heating shell 10, so that the molten PE material transported from the heating shell 10 can smoothly enter the extrusion shell 13 to continue plasticizing. A plurality of placement grooves 27 are provided on the outer wall of the extrusion shell body 25. These grooves are distributed axially or annularly along the extrusion shell 13 and are used to embed and install thermal conductive strips 26. The thermal conductive strips 26 are made of a metal material with high thermal conductivity (such as copper alloy or aluminum alloy), are respectively embedded in each placement groove 27, and fit tightly with the external insulation shell 14. The function of the thermal conductive strip 26 is to enhance the heat conduction efficiency between the extrusion shell 13 and the insulation shell 14, so that the temperature of the shell 16 remains constant during the extrusion process, and prevent local overheating or cooling from causing changes in material properties.

[0049] The extruder further includes a microwave heater 28 , which is disposed on one side of the circulation shell 12 .

[0050] In practical applications, the microwave heater 28 can work in conjunction with the heating coil 11 to assist in heating the heat-conducting medium, thereby improving heating efficiency in conjunction with the heating coil 11. To ensure safe operation, the microwave heater 28 is equipped with a shielding device and a temperature control system to prevent electromagnetic leakage and overheating.

[0051] The loader includes a base 101, a raw material box 102, a discharge plate 103, a support plate 104, a rotator 105, a bottom plate 106, a connecting pipe 107, a fan 108, a dust collector 109 and a receiving plate 110. The raw material box 102 is arranged on the base 101, the discharge plate 103 is arranged at the bottom of the raw material box 102, the support plate 104 is provided with a plurality of air outlets, the support plate 104 is rotatably arranged on one side of the discharge plate 103, the rotator 105 is used to drive the support plate 104 to rotate, a plurality of air ducts are provided on the bottom plate 106, the bottom plate 106 is arranged at the bottom of the support plate 104, the connecting pipe 107 is connected to the bottom plate 106, the fan 108 is arranged in the connecting pipe 107, the receiving plate 110 is arranged on one side of the support plate 104, and the dust collector 109 is arranged above the support plate 104.

[0052] In this embodiment, the raw material box 102 is provided on the base 101 and is used to store raw materials such as PE particles, and realizes uniform feeding through a control device.

[0053] The discharge plate 103 is mounted at the bottom of the raw material bin 102 and is used to smoothly transport the raw materials to the subsequent processing area. The support plate 104 is positioned to one side of the discharge plate 103 and is inclined at a certain angle to the discharge plate 103 to facilitate the smooth flow of materials. The support plate 104 is provided with multiple air outlets, which are evenly distributed and can blow air to the materials during their movement to remove impurities.

[0054] In order to enhance the flexibility of the equipment, the support plate 104 is rotatably arranged on one side of the discharge plate 103 through a rotating mechanism, so that during the impurity removal process, the rotator 105 can drive the support plate 104 to shake cyclically to drive the material to vibrate, thereby better removing dust.

[0055] The bottom plate 106 is located at the bottom of the support plate 104 and is internally provided with multiple air ducts that communicate with the air outlets on the support plate 104, thereby forming a complete air circulation system. A connecting pipe 107 is connected to the bottom plate 106 at one end and to a fan 108 at the other end. The fan 108 is disposed within the connecting pipe 107 and is used to provide power, allowing air to enter through the air ducts of the bottom plate 106 and be blown out through the air outlets of the support plate 104, thereby removing dust from the material. Meanwhile, impurities that cannot be blown out can enter the bottom plate 106 through the air outlets and be deposited.

[0056] The production line is also equipped with a material receiving plate 110 and a dust collector 109. The material receiving plate 110 is located on one side of the support plate 104 and is used to receive the cleaned materials. The dust collector 109 is located above the support plate 104 and is used to absorb dust and impurities generated during the production process, keeping the workshop clean and preventing dust from adhering to the product surface and affecting product quality, thereby better removing impurities from the materials.

[0057] The discharge plate 103 includes a discharge plate body 111 , a sliding plate 112 and an adjusting screw 113 . The sliding plate 112 is slidably disposed on the discharge plate body 111 . The adjusting screw 113 is threadedly connected to the sliding plate 112 and is rotationally connected to the discharge plate body 111 .

[0058] The adjusting screw 113 is connected to the sliding plate 112 by a thread and is rotatably connected to the discharge plate body 111. The operator can drive the sliding plate 112 to slide along the discharge plate body 111 by rotating the adjusting screw 113, thereby accurately controlling the size of the discharge port and ensuring that the raw materials are stably output at the set speed.

[0059] The discharge plate 103 also includes a pressure plate 114, a brush roller 115 and a drive motor 116. The pressure plate 114 is slidably arranged on the discharge plate body 111. The brush roller 115 is rotationally connected to the pressure plate 114 and is located above the pressure plate 114. The output end of the drive motor 116 is connected to the brush roller.

[0060] The pressure plate 114 is slidably mounted on the discharge plate body 111 so that it can move according to the material conditions; the brush roller 115 is rotatably connected to the pressure plate 114 through a bearing and is located above the pressure plate 114; the drive motor 116 is fixed to one side of the pressure plate 114, and its output end is transmission-connected to the brush roller 115, which can drive the brush roller 115 to rotate at high speed, thereby driving the material to move to the outlet of the discharge plate body 111.

[0061] The discharge plate 103 also includes a pushing roller 117, a first friction wheel 118, a second friction wheel 119, a pushing motor 120 and an elastic member 121. The elastic member 121 is arranged at the outlet of the discharge plate body 111. The pushing roller 117 rotates on the elastic member 121. The first friction wheel 118 is fixedly connected to the pushing roller 117. The second friction wheel 119 is rotatably arranged below the first friction wheel 118. The output end of the pushing motor 120 is connected to the second friction wheel 119.

[0062] The elastic member 121 is arranged at the outlet of the discharge plate body 111, and is used to buffer the impact force generated during the pushing process, while maintaining good contact between the pushing roller 117 and the material; the pushing roller 117 is rotatably mounted on the elastic member 121, and is used to push the raw materials continuously and evenly to the subsequent processing area; the first friction wheel 118 is coaxially fixedly connected to the pushing roller 117, serving as a key component for power transmission; the second friction wheel 119 is rotatably arranged below the first friction wheel 118, and power transmission is achieved between the two through friction cooperation; when material blockage occurs at the outlet, the material will press down the pushing roller 117, thereby driving the elastic member 121 to move downward, so that the first friction wheel 118 can contact the second friction wheel 119. At this time, the first friction wheel 118 can be driven to rotate by the second friction wheel 119, thereby actively pushing the material at the outlet of the discharge plate body 111 to move to the support plate 104 to avoid blockage.

[0063] The PE plastic packaging bag production line further includes a partition 122 and a flexible connecting belt 123 . The partition 122 is disposed on one side of the vacuum cleaner 109 , and the flexible connecting belt 123 is connected to the partition 122 and the support plate 104 .

[0064] The partition 122 is provided on one side of the vacuum cleaner 109 to isolate the vacuuming area from the external environment and prevent dust from spreading to non-working areas, thereby effectively improving the air quality in the workshop and protecting the health of operators;

[0065] The flexible connecting strips 123, respectively connected to the partitions 122 and support plate 104, are made of a highly elastic, wear-resistant material with excellent flexibility and tensile strength. Their purpose is to maintain a sealed connection between the partitions 122 and support plate 104 even when the support plate 104 changes angle, ensuring continuous and stable operation of the vacuum system throughout its entire adjustment range and preventing reduced vacuum efficiency or air leakage due to angle adjustments.

[0066] The rotator 105 includes a rotating disk 124, a connecting rod 125, a rotating motor 126 and a sliding block 127. The rotating disk 124 is rotatably arranged on one side of the support plate 104, the connecting rod 125 is fixed on the rotating disk 124, the sliding block 127 is slidably arranged on the support plate 104, the connecting rod 125 extends into the sliding groove of the sliding block 127, and the output end of the rotating motor 126 is connected to the rotating disk 124.

[0067] The rotating disk 124 is rotatably mounted on one side of the support plate 104 and serves as the core component for power transmission. The connecting rod 125 is fixedly mounted on the edge of the rotating disk 124 and extends into the interior of the sliding block 127. The sliding block 127 is slidably mounted within a guide rail or slide groove provided on the support plate 104 and is capable of linear motion along a set trajectory. The connecting rod 125 extends into the slide groove of the sliding block 127, forming a linkage mechanism. When the rotating disk 124 rotates, the connecting rod 125 drives the sliding block 127 to reciprocate. The rotating motor 126 is mounted on one side of the support plate 104, and its output end is transmission-connected to the rotating disk 124. The motor drives the rotating disk 124 to rotate, thereby achieving a linear displacement change of the sliding block 127, thereby driving the support plate 104 to vibrate. The structure of the rotator 105 has the characteristics of fast response speed, high adjustment accuracy, and smooth operation.

[0068] The base plate 106 includes a base plate body 128 , a cover plate 129 and a buckle 130 . The cover plate 129 is rotatably connected to the base plate body 128 and is located on one side of the base plate body 128 . The buckle 130 is provided on the cover plate 129 .

[0069] The bottom plate body 128 is the main structure of the entire bottom plate 106, and is provided with a plurality of interconnected air ducts inside, which are used to guide cooling air from the fan 108 through the connecting pipe 107 into the bottom plate 106 and flow to the air outlet of the support plate 104;

[0070] The cover 129 is rotatably connected to one side of the base body 128 via a rotating shaft. When open, it facilitates cleaning the air duct within the base 106 to remove any large impurities. A buckle 130 is provided at the free end of the cover 129 to securely lock the cover 129 to the base body 128, preventing the cover 129 from loosening or even falling off due to vibration during operation.

[0071] The connecting pipe 107 includes a pipe body 131 , a filter 132 and an inertial sweeping brush 133 . The filter 132 is disposed on one side of the pipe body 131 , and the inertial sweeping brush 133 is disposed on one side of the filter 132 .

[0072] The tube body 131 is a hollow pipe structure, which is used to connect the air flow channel between the base plate 106 and the fan 108, so that the cooling air can circulate in the system; the filter 132 is arranged on one side of the tube body 131, preferably near the inlet of the fan 108 or the bend of the air duct, and is used to intercept dust, impurities and other particulate matter in the air flowing back from the air outlet of the support plate 104, preventing them from entering the interior of the fan 108 and causing equipment wear or blockage;

[0073] The inertial sweeping brush 133 is arranged on one side of the filter 132 and is the core component for realizing automatic cleaning of the filter 132. It can generate mechanical movement with vibration and periodically clean the surface of the filter 132 to prevent dust accumulation from affecting the filtering efficiency.

[0074] The inertial sweeping brush 133 includes a sweeping brush body 134, a counterweight 135, a gear 136, a rack 137 and a slider body 138. The slider body 138 is slidably arranged on one side of the filter 132, and the gear 136 is rotatably arranged on the slider body 138. The rack 137 is fixed on one side of the slider body 138 and meshes with the gear 136. The sweeping brush body 134 is connected to the gear 136, and the counterweight 135 is arranged on the slider body 138.

[0075] The sweeping brush body 134 is fixedly mounted on the output end of the gear 136 and is made of a flexible, wear-resistant material, such as a nylon brush or a silicone brush strip, which can closely fit the surface of the filter 132 to achieve efficient dust removal; the counterweight block 135 is fixedly mounted on the slider body 138, and uses its own weight and inertia to produce displacement changes during airflow changes or vibrations, thereby driving the entire sweeping brush mechanism to work; the gear 136 is rotatably mounted on the slider body 138, and as a key component of power transmission, it meshes with the rack 137 and drives the sweeping brush body 134 to rotate; the rack 137 is fixed to one side of the slider body 138, forming a meshing transmission relationship with the gear 136. When the slider moves, the gear 136 is driven to rotate through the rack 137; the slider body 138 is slidably mounted in a guide rail or slide groove on one side of the filter 132, and can reciprocate in a straight line with changes in airflow pressure or external vibrations, thereby driving the gear 136 and the sweeping brush body 134 to move.

[0076] When fan 108 is running, air flows through filter 132 in connecting tube 107 and into tube body 131. Due to the presence of counterweight 135, when support plate 104 vibrates, slider body 138 slides back and forth due to inertia. This sliding motion, through the meshing of rack 137 and gear 136, is converted into rotational motion of gear 136, ultimately driving sweeping brush body 134 to rotate and continuously sweep dust and impurities adhering to the surface of filter 132, thereby maintaining the patency of filter 132 and maintaining ventilation efficiency.

[0077] Second embodiment:

[0078] The present invention also provides a PE plastic packaging bag production system, comprising the PE plastic packaging bag production line.

[0079] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of the rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made in accordance with the claims of the present invention are still within the scope of the invention.

Claims

1. A PE plastic packaging bag production line, characterized in that: It includes a feeder and an extruder, wherein the extruder includes a heating shell, a heating coil, a circulation shell, an extrusion shell, a heat-insulating shell and an extrusion screw; The heating shell is arranged below the loader, the circulation shell is arranged outside the heating shell, the heating coil is arranged between the heating shell and the circulation shell, the extrusion shell is communicated with the heating shell and is located on one side of the extrusion shell, the insulation shell is arranged outside the extrusion shell, the extrusion screw is rotatably arranged in the extrusion shell, and the circulation shell is communicated with the insulation shell; the loader includes a base, a raw material box, a discharge plate, a support plate, a rotator, a bottom plate, a connecting pipe, a fan, a dust collector and a receiving plate, the discharge plate is arranged at the bottom of the raw material box, the support plate is provided with a plurality of air outlets, the support plate is rotatably arranged on one side of the discharge plate, the rotator is used to drive the support plate to rotate, a plurality of air ducts are provided on the bottom plate, and the bottom plate is arranged on the support plate The bottom of the discharging plate is connected to the bottom plate, the connecting pipe is connected to the bottom plate, the fan is arranged in the connecting pipe, the receiving plate is arranged on one side of the support plate, and the dust collector is arranged above the support plate; the discharging plate includes a discharging plate body, a sliding plate and an adjusting screw, the sliding plate is slidably arranged on the discharging plate body, the adjusting screw is threadedly connected to the sliding plate and is rotatably connected to the discharging plate body; the discharging plate also includes a pushing roller, a first friction wheel, a second friction wheel, a pushing motor and an elastic member, the elastic member is arranged at the outlet of the discharging plate body, the pushing roller rotates on the elastic member, the first friction wheel is fixedly connected to the pushing roller, the second friction wheel is rotatably arranged below the first friction wheel, and the output end of the pushing motor is connected to the second friction wheel.

2. A PE plastic packaging bag production line as claimed in claim 1, characterized in that: The heating shell includes a shell, a stirring structure and an exhaust pipe. The stirring structure is arranged in the shell, and the exhaust pipe is arranged above the shell.

3. A PE plastic packaging bag production line as claimed in claim 2, characterized in that: The stirring structure includes a stirring rod, a stirring motor, a stirring blade and a circulation blade. The stirring rod is rotatably arranged in the heating shell and passes through the circulation shell. The output end of the stirring motor is connected to the stirring rod. The stirring blade is fixedly connected to the stirring rod and is located in the heating shell. The circulation blade is fixedly connected to the stirring rod and is located in the circulation shell.

4. A PE plastic packaging bag production line as claimed in claim 3, characterized in that: The stirring structure further includes a first sealing sleeve and a second sealing sleeve, wherein the first sealing sleeve is arranged between the stirring rod and the heating shell, and the second sealing sleeve is arranged between the stirring rod and the circulation shell.

5. A PE plastic packaging bag production line as claimed in claim 4, characterized in that: The extruded shell includes an extruded shell body and a plurality of heat-conducting strips. The extruded shell body has a plurality of placement grooves, and the plurality of heat-conducting strips are respectively arranged in the plurality of placement grooves.

6. A PE plastic packaging bag production line as claimed in claim 5, characterized in that: The extruder further includes a microwave heater, which is disposed on one side of the circulation shell.

7. A PE plastic packaging bag production system, characterized in that: A PE plastic packaging bag production line comprising the production line described in any one of claims 1 to 6.

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