Packaging film recycling device

Abstract

This invention belongs to the field of plastic film recycling technology, specifically a packaging film recycling device. It includes a processing chamber with a feed inlet; a feed hopper is fixed at the feed inlet; two rotating blade rollers are located inside the processing chamber, driven by a first motor; each blade roller is equipped with a cutter; a conveyor belt is located inside the feed hopper; an extrusion belt is located inside the processing chamber, with a portion extending into the feed hopper; the side of the extrusion belt extending into the feed hopper curves upwards; the extrusion belt is located outside the conveyor belt and parallel to the conveyor belt inside the processing chamber; uniformly arranged pressure bars are located within the inner ring of the extrusion belt; a traction mechanism is located above the blade rollers; and a discharge mechanism is located at the bottom of the processing chamber. This invention, by setting up a processing chamber, can compress the film material from a loose state into a dense form, thereby preventing the packaging film from being lifted upwards due to airflow disturbance, which would prevent floating packaging film from being crushed.

Description

Technical Field

[0001] This invention belongs to the field of plastic film recycling technology, specifically a packaging film regeneration device. Background Technology

[0002] With the rapid development of modern industrial production and commodity circulation, packaging film, as a lightweight, waterproof, and food-preserving packaging material, is widely used in food, e-commerce, chemical, and building materials industries. However, packaging film is mostly made from polyethylene and polypropylene, and the waste packaging film generated after its use is characterized by being difficult to degrade, large in volume, and widely distributed. If directly landfilled, it can take decades or even centuries to decompose naturally, easily causing soil compaction and groundwater pollution. If indiscriminately burned, it will release volatile organic compounds, toxic gases, and other pollutants, exacerbating air pollution. Therefore, recycling and regenerating waste packaging film can not only reduce environmental pollution and alleviate resource shortages, but also reduce enterprise production costs and align with environmental protection policies, thus possessing significant environmental, economic, and social benefits.

[0003] Currently, the mainstream recycling process for waste packaging film follows a core workflow of "crushing-washing-granulation," forming a relatively mature processing system. The first step is crushing, whose core purpose is to break irregularly shaped and large-sized waste packaging film into uniformly sized small fragments. After crushing, the film enters the washing stage. Because waste packaging film often has contaminants such as oil, food residue, printing ink, and adhesives adhering to its surface, it requires multiple steps including pre-washing, main washing, rinsing, and dehydration to remove surface impurities and contaminants. Finally, in the granulation stage, the washed and dried film fragments are fed into an extruder, where they are melted into a homogeneous melt at a set temperature. After filtration to remove minute impurities, the melt is then processed into recycled plastic particles by a pelletizer. These particles can be reused as raw materials in injection molding, blown film production, pipe manufacturing, and other production processes, achieving resource recycling.

[0004] Because the core raw material of packaging film has extremely low density and is lightweight and tough, the following problems easily occur during the crushing process: When waste packaging film enters the crushing chamber, due to its low density, it is difficult for it to naturally settle into the working area of ​​the cutting blades; instead, it tends to float above the blades. At the same time, the high-speed rotating blades create strong airflow disturbances within the crushing chamber, which further lifts the lightweight packaging film fragments upwards, keeping them in a suspended state and preventing them from effectively contacting and shearing the blades. This phenomenon directly leads to the packaging film being difficult to cut accurately and uniformly; some film materials are only torn into long strips of fiber instead of uniform fragments of the target size, and sometimes the film material even wraps around the blades. This not only reduces crushing efficiency but also requires frequent shutdowns for cleaning. Furthermore, it creates hidden dangers for the sufficient contact between fragments and cleaning agents in subsequent cleaning processes and for the uniform melting of the melt in the granulation process, seriously affecting the quality of recycled materials and the continuity of production. Summary of the Invention

[0005] To overcome the shortcomings of existing technologies and solve the aforementioned technical problems, this invention proposes a packaging film recycling device. By setting up a processing chamber, the film material can be compacted from a loose state to a dense state, thereby preventing the packaging film from being lifted upwards due to airflow disturbance, which would prevent the floating packaging film from being crushed. The specific structure is as follows.

[0006] A packaging film recycling device includes a processing chamber, and a support leg is installed at the bottom of the processing chamber; the processing chamber is provided with a material inlet;

[0007] A feed hopper is fixed at the material inlet position; two blade rollers rotate inside the processing hopper, and the blade rollers are driven by a first motor; each blade roller is fixed with a cutter, and the cutters on the two blade rollers are staggered.

[0008] The feed hopper is equipped with a conveyor belt, and the other side of the conveyor belt extends through the feed inlet to the top of the cutter roller and downwards vertically; an arc-shaped plate is fixed inside the feed hopper, and the arc-shaped plate is used to limit and support the conveyor belt.

[0009] The feed hopper contains a rotating first drive rod, which is located on the inner ring of the conveyor belt and is driven by a second motor.

[0010] The inner ring of the conveyor belt located in the processing chamber is provided with evenly arranged rotating rods, and the rotating rods rotate within the processing chamber;

[0011] The processing chamber is equipped with an extrusion belt, and part of the extrusion belt extends into the feeding chamber; the side of the extrusion belt extending into the feeding chamber is curved upward, and the inner ring of the extrusion belt is equipped with a second drive rod, which is driven by a third motor.

[0012] The extrusion belt is located outside the conveyor belt and is parallel to the conveyor belt located inside the processing chamber, with a distance between the extrusion belt and the conveyor belt.

[0013] The conveyor belt and the extrusion belt have their downward vertical sides facing the space between the two cutter rollers; the inner ring of the extrusion belt is provided with uniformly arranged pressure bars;

[0014] A traction mechanism is provided above the cutter roller, and the traction mechanism is located between the extrusion belt, the conveyor belt and the cutter roller; a discharge mechanism is provided at the bottom of the processing chamber.

[0015] In a preferred embodiment of the present invention, each of the plurality of pressure rods has a slider at both ends, and the pressure rods rotate on the sliders.

[0016] Each of the multiple pressure rods has a sliding groove on both sides of the inner wall of the processing chamber, and the slider slides in the sliding groove; a spring connects the slider and the sliding groove.

[0017] In a preferred embodiment of the present invention, the traction mechanism includes two opposing drive blocks;

[0018] Both drive blocks are equipped with bidirectional lead screws, which are screw-driven with the drive blocks and drive the drive blocks to move back and forth.

[0019] The bidirectional lead screw rotates on the processing chamber and is driven by a fourth motor; extrusion rollers rotate on both sides of the drive block; a gap is left between the extrusion rollers on the two drive blocks;

[0020] Each of the extrusion rollers has through holes inside; both sides of the extrusion rollers have through slots on the side walls of the processing chamber; an extension chamber is fixed to the outside of the processing chamber, and the through slots are located inside the extension chamber.

[0021] A guide tube is fixed inside the extension chamber, and the guide tube extends into the through hole inside the extrusion roller.

[0022] A dual-axis motor is mounted on the top of the drive block, and drive wheels are fixed on the two output shafts of the dual-axis motor, with the drive wheels respectively contacting the extrusion rollers.

[0023] In a preferred embodiment of the present invention, uniformly arranged extrusion teeth are fixed on the outer ring surface of each of the plurality of extrusion rollers.

[0024] The extrusion teeth on the extrusion rollers of the two drive blocks mesh with each other; the outer ring of the drive wheel has a toothed groove, and the toothed groove meshes with the adjacent extrusion teeth.

[0025] In a preferred embodiment of the present invention, one end of the conduit located outside the treatment chamber is connected to an external water pipe via a connector, and a valve is installed on the connector;

[0026] The inner wall of the extrusion roller is provided with uniformly arranged liquid holes, and the liquid holes are located between two adjacent extrusion teeth.

[0027] In a preferred embodiment of the present invention, baffles are fixed on opposite sides of the two drive blocks, and the baffles are inclined downward and fixed inside the processing chamber.

[0028] The top of the baffle is semi-circular and is located above the drive wheel, but does not contact the drive wheel.

[0029] In a preferred embodiment of the present invention, the baffle is fixed with uniformly arranged scrapers on the side facing the cutter roller;

[0030] The scraper is located between two adjacent cutters and is in contact with the cutter roller.

[0031] In a preferred embodiment of the present invention, the discharge mechanism includes a conical bin; the bottom of the processing bin is fixed with a conical bin;

[0032] The conical chamber is equipped with an auger; a toothed ring is fixed to the top of the auger and rotates within the inner wall of the conical chamber; a fifth motor is fixed to the outside of the conical chamber; a gear is fixed to the fifth motor, and part of the gear extends into the inner wall of the conical chamber and meshes with the toothed ring.

[0033] The conical compartment is provided with a packing assembly at its bottom; the packing assembly includes a packing frame, and a circular plate is fixed to the top of the packing frame; a first circular groove is formed on the circular plate at the bottom of the conical compartment; a second circular groove is formed on the right side of the first circular groove;

[0034] A turntable rotates at the bottom of the circular plate; a sixth motor is fixed on the circular plate, and the output shaft of the sixth motor is fixed to the turntable;

[0035] Two material cylinders slide inside the turntable, and the material cylinders are respectively opposite to the first circular groove and the second circular groove; the bottom of the material cylinder is provided with a cylinder cover, and the cylinder cover is rotatably installed on the material cylinder by a tower buckle;

[0036] Side plates are fixed on both sides of the material cylinder; uprights slide inside the side plates and are fixed on the turntable; a spring connects the side plates and the turntable.

[0037] The diameter of the first circular groove is the same as the outer diameter of the material cylinder, and the outer diameter of the bottom of the conical hopper is the same as the inner diameter of the material cylinder; the diameter of the second circular groove is the same as the inner diameter of the material cylinder.

[0038] An electric push rod is fixed to the top of the second circular groove by a mounting bracket, and a push plate is fixed to the bottom of the electric push rod.

[0039] In a preferred embodiment of the present invention, an air pipe is installed in the inner wall of the conical chamber on the outer ring of the auger, and the air pipe is connected to an external air source; a filter cloth is provided inside the air pipe.

[0040] The opposite side of the cutter roller has air holes on the side wall of the processing chamber.

[0041] The beneficial effects of this invention are as follows:

[0042] 1. The packaging film recycling device of the present invention, in the feeding stage, forms a cooperative conveying structure with a conveyor belt and an extrusion belt extending to the feeding hopper and curving upwards. During the relative rotation, a continuous extrusion force is applied to the packaging film, which not only compacts the film material from a loose state to a dense state, but also effectively breaks the gas trapped inside the film material, significantly increasing the weight per unit volume of the packaging film and fundamentally weakening its floating characteristics. The compacted packaging film will not be lifted upwards due to airflow disturbance during the crushing process, and ineffective contact with the cutting blade surface will be reduced, fundamentally avoiding the risk of film material entanglement with the blade. Compared with the drawbacks of frequent shutdowns for cleaning in traditional devices, this device can achieve continuous and stable feeding and crushing operations, greatly reducing the frequency of shutdowns and significantly improving production continuity. At the same time, the feeding smoothness of the compacted packaging film is improved, and with the efficient shearing of the blade roller, the processing capacity per unit time is significantly increased, and the crushing efficiency is greatly improved compared with traditional devices. Moreover, because blade entanglement and frequent cleaning are avoided, blade wear and equipment maintenance costs are reduced, the service life of the equipment is extended, and the overall operation and maintenance investment is reduced.

[0043] 2. The packaging film recycling device of the present invention, due to the intermeshing of the rigid extrusion teeth on the outer ring of the extrusion roller, forms a high-intensity extrusion action through the biting of the extrusion teeth, which can further compress the initially compacted packaging film, break the tiny gaps remaining between the film layers, significantly increase the film density and unit volume weight, and further reduce buoyancy; by making the extrusion roller rotate and extrude while driving the packaging film to reciprocate along the axial direction of the cutter roller, the contact position between the packaging film and the cutter can be changed, which avoids repeated contact between local areas of the film material and the same set of cutters, ensuring that all cutters can participate in shearing evenly, making the particle size of the crushed product more uniform; at the same time, it avoids the problem of some cutters working under overload for a long time and wearing out too quickly in traditional devices.

[0044] 3. The packaging film recycling device of the present invention, due to the intermeshing of the rigid extrusion teeth on the outer ring of the extrusion roller, forms a high-intensity extrusion action through the biting of the extrusion teeth, which can further compress the initially compacted packaging film, break the tiny gaps remaining between the film layers, significantly increase the film density and unit volume weight, and further reduce buoyancy; by making the extrusion roller rotate and extrude while driving the packaging film to reciprocate along the axial direction of the cutter roller, the contact position between the packaging film and the cutter can be changed, which avoids repeated contact between local areas of the film material and the same set of cutters, ensuring that all cutters can participate in shearing evenly, making the particle size of the crushed product more uniform; at the same time, it avoids the problem of some cutters working under overload for a long time and wearing out too quickly in traditional devices. Attached Figure Description

[0045] The invention will now be further described with reference to the accompanying drawings.

[0046] Figure 1 This is a perspective view of the processing chamber in this invention;

[0047] Figure 2 This is a diagram of the internal structure of the processing chamber in this invention;

[0048] Figure 3 This is a structural diagram of the traction mechanism in this invention;

[0049] Figure 4 This is a structural diagram of the discharge mechanism in this invention;

[0050] Figure 5 This is a rear view of the processing chamber in this invention;

[0051] Figure 6 This is the present invention. Figure 5 Stepped sectional view at point AA;

[0052] Figure 7 This is the present invention. Figure 6 Enlarged view of a section at point B in the middle;

[0053] Figure 8 This is the present invention. Figure 6 Enlarged view of a section at point C;

[0054] Figure 9 This is the present invention. Figure 6 Enlarged view of a section at point D;

[0055] Figure 10 This is the present invention. Figure 6 Enlarged view of a section at point E in the middle;

[0056] Figure 11 This is the present invention. Figure 6 Sectional view at FF.

[0057] In the diagram: 1. Processing bin; 11. Feed bin; 12. Cutting roller; 13. Cutter; 14. Conveyor belt; 15. Arc plate; 16. First drive rod; 17. Rotating rod; 2. Extrusion belt; 21. Second drive rod; 22. Pressure rod; 23. Slider; 24. Slide groove; 3. Drive block; 31. Bidirectional lead screw; 33. Extrusion roller; 34. Through groove; 35. Extension bin; 36. Guide tube; 37. Drive wheel; 38. Extrusion tooth; 39. Liquid hole; 4. Baffle; 41. Scraper; 5. Conical bin; 51. Screwdriver; 52. Gear ring; 53. Gear; 6. Circular plate; 61. First circular groove; 62. Second circular groove; 63. Turntable; 64. Material cylinder; 65. Cylinder cover; 66. Side plate; 67. Vertical pole; 68. Electric actuator; 69. Push plate; 7. Air pipe; 71. Air hole. Detailed Implementation

[0058] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0059] like Figures 1 to 11 As shown, the packaging film recycling device of the present invention, as an embodiment of the present invention, includes a processing chamber 1, and a support leg is installed at the bottom of the processing chamber 1; the processing chamber 1 is provided with a material inlet;

[0060] The feed inlet is fixedly equipped with a feed bin 11; the processing bin 1 has two rotating cutter rollers 12, which are driven by a first motor; each cutter roller 12 is fixed with a cutter 13, and the cutters 13 on the two cutter rollers 12 are staggered.

[0061] The feed hopper 11 is equipped with a conveyor belt 14, and the other side of the conveyor belt 14 extends through the feed inlet to the top of the cutter roller 12 and downwards vertically; an arc plate 15 is fixed inside the feed hopper 11, and the arc plate 15 is used to limit and support the conveyor belt 14.

[0062] The feed hopper 11 is rotated by a first drive rod 16, which is located on the inner ring of the conveyor belt 14 and is driven by a second motor.

[0063] The inner ring of the conveyor belt 14 located in the processing chamber 1 is provided with evenly arranged rotating rods 17, and the rotating rods 17 rotate within the processing chamber 1;

[0064] The processing chamber 1 is provided with an extrusion belt 2, and part of the extrusion belt 2 extends into the feeding chamber 11; the side of the extrusion belt 2 extending into the feeding chamber 11 is raised upward, and the inner ring of the extrusion belt 2 is rotated by a second drive rod 21, and the second drive rod 21 is driven by a third motor.

[0065] The extrusion belt 2 is located outside the conveyor belt 14 and is parallel to the conveyor belt 14 located inside the processing chamber 1, with a distance between the extrusion belt 2 and the conveyor belt 14.

[0066] The conveyor belt 14 and the extrusion belt 2 are perpendicular to each other on the downward side, which is directly opposite the space between the two cutter rollers 12; the inner ring of the extrusion belt 2 is provided with uniformly arranged pressure bars 22;

[0067] A traction mechanism is provided above the cutter roller 12, and the traction mechanism is located between the extrusion belt 2, the conveyor belt 14 and the cutter roller 12; a discharge mechanism is provided at the bottom of the processing chamber 1;

[0068] In this embodiment, each of the multiple pressure rods 22 has a slider 23 at both ends, and the pressure rods 22 rotate on the slider 23.

[0069] Each of the multiple pressure rods 22 has a sliding groove 24 on both sides of the inner wall of the processing chamber 1, and the sliders 23 slide within the sliding grooves 24; a spring connects the sliders 23 and the sliding grooves 24.

[0070] When recycling packaging film, the processing chamber 1 is started first. After the processing chamber 1 is started, it controls two first motors to drive two blade rollers 12 to rotate to the opposite side and drive the cutter 13 to rotate alternately to the opposite side. At the same time, it controls the second motor and the third motor to rotate. The rotating second motor drives the conveyor belt 14 to rotate counterclockwise in the feeding chamber 11, and the rotating third motor drives the extrusion belt 2 to rotate clockwise. Then the packaging film can be processed and recycled.

[0071] Specifically, during the processing and recycling of packaging film, the packaging film is first placed in the feeding hopper 11. As the conveyor belt 14 rotates, it will move the packaging film upward. Since the side of the extrusion belt 2 extending into the feeding hopper 11 is raised upward, the packaging film moving with the conveyor belt 14 will gradually move between the conveyor belt 14 and the extrusion belt 2. When the packaging film moves between the extrusion belt 2 and the conveyor belt 14, it will move together with the extrusion belt 2 and the conveyor belt 14. During the movement of the packaging film, the extrusion belt 2 and the conveyor belt 14 will squeeze the packaging film between them, thereby squeezing the packaging film from an expanded state to a compacted state. If the packaging film contains gas, it will burst during the squeezing process, causing the gas to escape.

[0072] More specifically, when the packaging film moving with the conveyor belt 14 gradually moves to the end of the conveyor belt 14 and the extrusion belt 2, the compacted packaging film will gradually move out from between the extrusion belt 2 and the conveyor belt 14. Then the compacted packaging film will first pass through the traction mechanism, then move between the two cutter rollers 12, and be crushed by the cutter 13 on the cutter rollers 12. After crushing, it will be removed through the discharge mechanism.

[0073] Furthermore, since the pressure bar 22 rotates on the slider 23, and the slider 23 slides in the groove 24 through the spring, when the packaging film passes through multiple pressure bars 22, the multiple pressure bars 22 will squeeze the packaging film under the action of the spring. The pressure bar 22 will drive the slider 23 to slide in the groove 24 under the obstruction of the packaging film and squeeze the spring. If the packaging film after being stacked has a certain thickness, when the packaging film passes through the pressure bar 22, the pressure bar 22 will push the slider 23 to move a corresponding distance according to the thickness of the compressed packaging film, thereby avoiding the packaging film being obstructed by the pressure bar 22 when passing through it and unable to continue to follow the conveyor belt 14 and the extrusion belt 2.

[0074] Furthermore, during the feeding stage, the conveyor belt 14 and the upward-curving extrusion belt 2 extending to the feeding hopper 11 form a collaborative conveying structure. During relative rotation, they apply continuous extrusion force to the packaging film, which not only compacts the film material from a loose state to a dense state, but also effectively breaks down the gas trapped inside the film material, significantly increasing the weight per unit volume of the packaging film and fundamentally weakening its floating characteristics. The compacted packaging film will not be lifted upwards due to airflow disturbance during the crushing process, and it can also reduce ineffective contact with the surface of the cutter 13, thus avoiding the risk of the film material entanglement with the cutter from the root. Compared with the drawbacks of frequent shutdowns for cleaning in traditional devices, this device can achieve continuous and stable feeding and crushing operations, greatly reducing the frequency of shutdowns and significantly improving production continuity. At the same time, the improved feeding smoothness of the compacted packaging film, combined with the efficient shearing of the cutter roller 12, significantly increases the processing capacity per unit time, and the crushing efficiency is greatly improved compared with traditional devices. Moreover, by avoiding cutter entanglement and frequent cleaning, it reduces cutter wear and equipment maintenance costs, extends the service life of the equipment, and reduces the overall operation and maintenance investment.

[0075] As one embodiment of the present invention; the traction mechanism includes two opposing drive blocks 3;

[0076] Both drive blocks 3 are connected by a bidirectional lead screw 31, and the bidirectional lead screw 31 is screwed to the drive block 3, thus driving the drive block 3 to move back and forth.

[0077] The bidirectional lead screw 31 rotates on the processing chamber 1 and is driven by the fourth motor; the drive block 3 has extrusion rollers 33 rotating on both sides; a gap is left between the extrusion rollers 33 on the two drive blocks 3;

[0078] Each of the extrusion rollers 33 has through holes inside; both sides of the extrusion rollers 33 have through grooves 34 on the side walls of the processing chamber 1; an extension chamber 35 is fixed to the outside of the processing chamber 1, and the through grooves 34 are located inside the extension chamber 35.

[0079] The extension chamber 35 is fixed with a guide tube 36, and the guide tube 36 extends into the through hole inside the extrusion roller 33.

[0080] The top of the drive block 3 is equipped with a dual-axis motor, and drive wheels 37 are fixed on the two output shafts of the dual-axis motor, and the drive wheels 37 are in contact with the extrusion rollers 33 respectively.

[0081] In this embodiment, the outer ring surfaces of the plurality of extrusion rollers 33 are all fixed with uniformly arranged extrusion teeth 38;

[0082] The extrusion teeth 38 on the extrusion rollers 33 of the two drive blocks 3 mesh with each other; the outer ring of the drive wheel 37 is provided with tooth grooves, and the tooth grooves mesh with the adjacent extrusion teeth 38.

[0083] In this embodiment, one end of the conduit 36 ​​located outside the treatment chamber 1 is connected to an external water pipe via a connector, and a valve is installed on the connector;

[0084] The inner wall of the extrusion roller 33 is provided with uniformly arranged liquid holes 39, and the liquid holes 39 are located between two adjacent extrusion teeth 38.

[0085] When processing chamber 1 is started, the fourth motor and the dual-axis motor are also controlled to rotate. The rotating fourth motor drives the bidirectional lead screw 31 to rotate. Since the drive block 3 and the bidirectional lead screw 31 are screw-driven, the two drive blocks 3 will move back and forth along the bidirectional lead screw 31 together, and the speed and direction of movement are the same. During the back and forth movement of the drive blocks 3, the extrusion roller 33 will move back and forth through the rotating roller 32. Since there is an extension chamber 35 on the outside of processing chamber 1, during the back and forth movement of the extrusion roller 33, the inside of the extrusion roller 33 will move along the guide tube 36, and at the same time, it will move into the extension chamber 35 through the through groove 34, and then from the extension chamber The rollers move out of the 35-inch section, and this cycle repeats. Simultaneously, as the dual-axis motor rotates, it drives the drive wheels 37 on both sides of the drive block 3 to rotate. The rotating drive wheels 37 drive the extrusion rollers 33 to rotate. Since the extrusion teeth 38 fixed on the extrusion rollers 33 mesh with the tooth grooves on the drive wheels 37, the rotating drive wheels 37 can more easily drive the extrusion rollers 33 and extrusion teeth 38 to rotate. Furthermore, the extrusion rollers 33 on the two drive blocks 3 rotate in opposite directions; that is, the left extrusion roller 33 rotates clockwise downwards, and the right extrusion roller 33 rotates counterclockwise downwards. During their rotation, the extrusion rollers 33 and extrusion teeth 38 move back and forth with the drive block 3.

[0086] Specifically, as the packaging film moves downward from between the extrusion belt 2 and the conveyor belt 14, the compressed packaging film gradually moves down between the two extrusion rollers 33. Subsequently, the intermeshing and rotating extrusion teeth 38 will extrude the downward packaging film again. Since the extrusion teeth 38 are rigid, the extrusion force on the packaging film can be increased, making the packaging film layers more compact. During the intermeshing and rotating process of the extrusion teeth 38, the downward packaging film will be gradually extruded and driven to move downward. When the packaging film moves down to the position of the cutting blade, it will be crushed by the cutting blade 13. Since the packaging film is more compact at this time, the weight per unit volume of the packaging film can be further increased, thereby further weakening the floating property and preventing it from being lifted upward by the airflow and unable to be cut.

[0087] More specifically, since the extrusion roller 33 and extrusion teeth 38 move back and forth in a cycle following the drive block 3, when the packaging film passes through the extrusion teeth 38, it will drive the packaging film to move back and forth. If the packaging film is being crushed by the cutter 13, the back-and-forth moving extrusion teeth 38 will drive the packaging film to move, thereby changing the contact position between the packaging film and the cutter 13. If the packaging film is not in contact with the cutter 13, the back-and-forth moving extrusion teeth 38 will directly drive the packaging film to move. When the packaging film comes into contact with the cutter 13, it will be crushed. In this process, the cutter 13 at different positions can crush the packaging film, thereby avoiding the situation where only some cutters 13 crush the packaging film for a long time, so that the wear degree of that part of the cutter 13 is different from the wear degree of other cutters 13.

[0088] Furthermore, since the conduit 36 ​​is connected to the external water pipe, during the process of squeezing the packaging film using the squeezing roller 33 and squeezing teeth 38, the valve is opened to allow water to enter the through hole and flow out from the liquid hole 39. The flowing water will act on the packaging film that passes through, thereby further increasing the weight of the packaging film.

[0089] It should be noted that if the shredded packaging film needs to be cleaned later, water can be introduced into the through hole through the conduit 36, and then adhered to the packaging film through the liquid hole 39. If the shredded packaging film does not need to be cleaned later, it is not necessary to introduce water into the through hole.

[0090] Furthermore, due to the intermeshing of the rigid extrusion teeth 38 on the outer ring of the extrusion roller 33, a high-intensity extrusion action is formed through the meshing of the extrusion teeth 38, which can further compress the initially compacted packaging film, break the tiny gaps remaining between the film layers, significantly increase the film density and unit volume weight, and further reduce buoyancy; by making the extrusion roller 33 rotate and extrude while driving the packaging film to reciprocate along the axis of the cutter roller 12, the contact position between the packaging film and the cutter 13 can be changed, which avoids repeated contact between the local area of ​​the film material and the same set of cutters 13, ensuring that all cutters 13 can participate in shearing evenly, making the particle size of the crushed product more uniform; at the same time, it avoids the problem of some cutters 13 working under overload for a long time and wearing out too quickly in traditional devices.

[0091] As an embodiment of the present invention; baffles 4 are fixed on opposite sides of the two drive blocks 3, and the baffles 4 are inclined downward and fixed inside the processing chamber 1;

[0092] The top of the baffle 4 is semi-circular and is located above the drive wheel 37, but does not contact the drive wheel 37;

[0093] In this embodiment, the baffle 4 is fixed with uniformly arranged scrapers 41 on the side facing the cutter roller 12;

[0094] The scraper 41 is located between two adjacent cutters 13 and is in contact with the cutter roller 12;

[0095] When the packaging film is shredded, the shredded fragments fall to the bottom of the cutter roller 12. Due to the presence of the baffle 4, the shredded fragments can be blocked, thus preventing the packaging film fragments from floating into the external environment through the feed port. At the same time, since the scraper 41 on the baffle 4 extends between the two cutters 13 and contacts the cutter roller 12, it will rotate along the scraper 41 during the rotation of the cutter roller 12. If the packaging film is wrapped around the cutter roller 12, the scraper 41 can scrape off the wrapped packaging film, thus avoiding the need to stop the machine to clean the wrapped packaging film due to the packaging film being wrapped around the cutter roller 12.

[0096] As one embodiment of the present invention; the discharge mechanism includes a conical bin 5; the bottom of the processing bin 1 is fixed with the conical bin 5;

[0097] The conical chamber 5 is equipped with an auger 51; a toothed ring 52 is fixed to the top of the auger 51 and rotates within the inner wall of the conical chamber 5; a fifth motor is fixed to the outside of the conical chamber 5; a gear 53 is fixed to the fifth motor and extends into the inner wall of the conical chamber 5, meshing with the toothed ring 52.

[0098] The bottom of the conical compartment 5 is provided with a packing assembly; the packing assembly includes a packing frame, and a circular plate 6 is fixed on the top of the packing frame; a first circular groove 61 is opened on the circular plate 6 at the bottom of the conical compartment 5; a second circular groove 62 is opened on the right side of the first circular groove 61;

[0099] A turntable 63 is rotatably mounted on the bottom of the circular plate 6; a sixth motor is fixed on the circular plate 6, and the output shaft of the sixth motor is fixed to the turntable 63.

[0100] Two material cylinders 64 slide inside the turntable 63, and the material cylinders 64 are respectively opposite to the first circular groove 61 and the second circular groove 62; the bottom of the material cylinder 64 is provided with a cylinder cover 65, and the cylinder cover 65 is rotatably installed on the material cylinder 64 by a buckle.

[0101] Side plates 66 are fixed on both sides of the material cylinder 64; upright rods 67 slide inside the side plates 66 and are fixed on the turntable 63; a spring connects the side plates 66 and the turntable 63.

[0102] The diameter of the first circular groove 61 is the same as the outer diameter of the material cylinder 64, and the outer diameter of the bottom of the conical chamber 5 is the same as the inner diameter of the material cylinder 64; the diameter of the second circular groove 62 is the same as the inner diameter of the material cylinder 64.

[0103] The top of the second circular groove 62 is fixed with an electric push rod 68 by a mounting bracket, and the bottom of the electric push rod 68 is fixed with a push plate 69;

[0104] In this embodiment, an air pipe 7 is installed on the outer ring of the auger 51 within the inner wall of the conical chamber 5, and the air pipe 7 is connected to an external air source; a filter cloth is provided inside the air pipe 7.

[0105] The opposite side of the cutter roller 12 is provided with an air hole 71 on the side wall of the processing chamber 1;

[0106] When the packaging film is shredded, it falls into the conical chamber 5. At the same time, the fifth motor drives the gear 53 to rotate. The rotating gear 53 drives the gear ring 52 to rotate, and the rotating gear ring 52 drives the auger 51 to rotate. When the auger 51 rotates, it pushes the shredded packaging film downward. If the shredded packaging film needs to be cleaned, a curved pipe can be connected directly to the bottom of the conical chamber 5, and the other side of the curved pipe can be extended into the cleaning liquid in the cleaning tank. The auger 51 pushes the shredded packaging film directly into the cleaning chamber and below the liquid surface. Then the shredded packaging film can be cleaned.

[0107] Specifically, if the shredded packaging film does not require cleaning, the packaging assembly is moved to the bottom of the processing chamber 1, aligning the first circular groove 61 with the bottom of the conical chamber 5. One of the material cylinders 64 located at the bottom of the turntable 63 passes through the first circular groove 61 and is fitted onto the bottom of the conical chamber 5. Then, the auger 51 is rotated, pushing the shredded packaging film downwards. The shredded film then falls into the material cylinder 64. As the auger 51 continues to push the shredded packaging film downwards, it gradually falls between the conical cylinder and the cylinder cover 65. The amount of packaging film entering the material cylinder 64 gradually increases, and as the film is continuously pushed into the cylinder 64, the packaging film inside the cylinder 64 is gradually compacted. Once the packaging film inside the cylinder 64 is compacted, and the packaging film... As the film continues to be pushed into the cylinder 64, it will push the cylinder 64 downwards. The downward movement of the cylinder 64 will cause the side plate 66 to stretch the spring. When the top of the cylinder 64 moves to below the first circular groove 61, the sixth motor is controlled to rotate 180 degrees, thereby driving the turntable 63 to rotate 180 degrees. At the same time, the cylinder 64 filled with packaging film will rotate to below the second circular groove 62, so that the cylinder 64 originally located below the second circular groove 62 will rotate to below the first circular groove 61, and then the packaging film can continue to be collected. Then, the collection bag is placed on the cylinder 64 filled with packaging film, the cylinder cover 65 is opened, and the electric push rod 68 is controlled to drive the push plate 69 downwards, so that the compacted packaging film in the cylinder 64 can be pushed into the packaging bag. Then the push plate 69 is controlled to return to the initial state.

[0108] More specifically, by compacting the shredded packaging film and storing it first in the material cylinder 64, and then pushing the shredded packaging film into the collection bag, the traditional equipment can avoid the situation where the shredded packaging film falls directly downwards after being shredded. Because the packaging film is lightweight, it cannot settle quickly and will float and spread in the air. Some fragments may even be scattered into the workshop environment with the airflow, causing material loss. At the same time, it is difficult to collect the scattered fragments, requiring an additional collection range and increasing collection time. This device can prevent the diffusion of the shredded packaging film by compacting it, and the compacted packaging film can fall directly into the collection bag.

[0109] Furthermore, during the process of using the auger 51 to push the packaging film downwards, the air pipe 7 is connected to an external exhaust fan, and air is drawn from the air pipe 7. This allows the gas inside the processing chamber 1 to be extracted from the air pipe 7, while external gas enters the processing chamber 1 through the air hole 71 to form a circulation. This allows the shredded packaging film to be carried into the conical chamber 5 by the airflow. Since the air pipe 7 is equipped with a filter cloth, it can block the shredded packaging film and prevent it from entering the air pipe 7. Because the auger 51 rotates in a circular motion, if packaging film is attached to the air pipe 7, the rotating auger 51 will push that part of the packaging film downwards, thus preventing the packaging film from being attached to the air pipe 7 for a long time.

[0110] In the description of this invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the appendix. Figure 1 The orientations or positional relationships shown are for the convenience of describing the present invention and simplifying the description only, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description and should not be construed as indicating or implying relative importance.

[0111] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A packaging film recycling apparatus characterized by comprising: Includes a processing chamber (1); the processing chamber (1) is provided with a material inlet; The feed inlet is fixedly equipped with a feed bin (11); the processing bin (1) has two rotating cutter rollers (12), which are driven by a first motor; each cutter roller (12) is fixed with a cutter (13); The feed hopper (11) is equipped with a conveyor belt (14), and the other side of the conveyor belt (14) extends through the feed inlet to the top of the cutter roller (12) and downwards vertically; an arc plate (15) is fixed inside the feed hopper (11); The feed hopper (11) is rotated by a first drive rod (16), and the first drive rod (16) is located in the inner ring of the conveyor belt (14) and is driven by a second motor; The inner ring of the conveyor belt (14) located in the processing chamber (1) is provided with evenly arranged rotating rods (17), and the rotating rods (17) rotate within the processing chamber (1); The processing chamber (1) is provided with an extrusion belt (2), and the extrusion belt (2) extends into the feeding chamber (11); the side of the extrusion belt (2) extending into the feeding chamber (11) is raised upward, and the inner ring of the extrusion belt (2) is rotated by a second drive rod (21), and the second drive rod (21) is driven by a third motor. The extrusion belt (2) is located outside the conveyor belt (14) and is parallel to the conveyor belt (14) located inside the processing chamber (1); The conveyor belt (14) and the extrusion belt (2) are perpendicular to each other on the side facing downwards, which is directly opposite the space between the two cutter rollers (12); the inner ring of the extrusion belt (2) is provided with uniformly arranged pressure bars (22); A traction mechanism is provided above the cutter roller (12), and the traction mechanism is located between the extrusion belt (2), the conveyor belt (14) and the cutter roller (12); a discharge mechanism is provided at the bottom of the processing chamber (1); The traction mechanism includes two opposing drive blocks (3); a bidirectional lead screw (31) runs through each of the two drive blocks (3), and the bidirectional lead screw (31) and the drive block (3) are screwed together, driving the drive block (3) to move back and forth. The bidirectional lead screw (31) rotates on the processing chamber (1) and is driven by the fourth motor; the drive block (3) has extrusion rollers (33) rotating on both sides; there is a gap between the extrusion rollers (33) on the two drive blocks (3); The top of the drive block (3) is equipped with a dual-axis motor, and drive wheels (37) are fixed on the two output shafts of the dual-axis motor, and the drive wheels (37) are in contact with the extrusion rollers (33) respectively.

2. The packaging film regeneration apparatus according to claim 1, characterized by: Each of the multiple pressure rods (22) has a slider (23) at both ends, and the pressure rods (22) rotate on the slider (23); Multiple pressure rods (22) are provided with grooves (24) on both sides of the inner wall of the processing chamber (1), and the sliders (23) slide in the grooves (24); a spring connects the sliders (23) and the grooves (24).

3. The packaging film regeneration apparatus according to claim 1, characterized by: The extrusion roller (33) has through holes inside; the extrusion roller (33) has through slots (34) on both sides of the processing chamber (1) side wall; an extension chamber (35) is fixed outside the processing chamber (1), and the through slots (34) are located inside the extension chamber (35); The extension chamber (35) is fixed with a guide tube (36), and the guide tube (36) extends into the through hole inside the extrusion roller (33).

4. The packaging film regeneration apparatus according to claim 3, characterized by: The outer ring surfaces of the plurality of extrusion rollers (33) are all fixed with uniformly arranged extrusion teeth (38); The extrusion teeth (38) on the extrusion rollers (33) of the two drive blocks (3) mesh with each other; the outer ring of the drive wheel (37) is provided with tooth grooves, and the tooth grooves mesh with the adjacent extrusion teeth (38).

5. The packaging film regeneration apparatus according to claim 4, characterized by: The end of the conduit (36) located outside the treatment chamber (1) is connected to an external water pipe through a connector, and a valve is installed on the connector; The inner wall of the extrusion roller (33) is provided with uniformly arranged liquid holes (39), and the liquid holes (39) are located between two adjacent extrusion teeth (38).

6. The packaging film regeneration apparatus according to claim 2, characterized by: Each of the two drive blocks (3) has a baffle (4) fixed on the opposite side, and the baffle (4) is tilted downward and fixed inside the processing chamber (1); The top of the baffle (4) is semi-circular and is located above the drive wheel (37), but does not contact the drive wheel (37).

7. The packaging film regeneration apparatus according to claim 6, characterized by: The baffle (4) has uniformly arranged scrapers (41) fixed on the side facing the cutter roller (12); The scraper (41) is located between two adjacent cutters (13) and is in contact with the cutter roller (12).

8. The packaging film regeneration apparatus according to claim 1, characterized by: The discharge mechanism includes a conical bin (5); the bottom of the processing bin (1) is fixed with the conical bin (5); An auger (51) rotates inside the conical chamber (5); a toothed ring (52) is fixed to the top of the auger (51), and the toothed ring (52) rotates in the inner wall of the conical chamber (5); a fifth motor is fixed to the outside of the conical chamber (5); a gear (53) is fixed to the fifth motor, and part of the gear (53) extends into the inner wall of the conical chamber (5) and meshes with the toothed ring (52); The conical compartment (5) is provided with a packing assembly at the bottom; the packing assembly includes a packing frame, and a circular plate (6) is fixed on the top of the packing frame; a first circular groove (61) is provided on the circular plate (6) at the bottom of the conical compartment (5); a second circular groove (62) is provided on the right side of the first circular groove (61); The bottom of the circular plate (6) is rotatably equipped with a turntable (63); a sixth motor is fixed on the circular plate (6), and the output shaft of the sixth motor is fixed to the turntable (63); Two material cylinders (64) slide inside the turntable (63), and the material cylinders (64) are respectively opposite to the first circular groove (61) and the second circular groove (62); the bottom of the material cylinder (64) is provided with a cylinder cover (65), and the cylinder cover (65) is rotatably installed on the material cylinder (64) by a buckle; Side plates (66) are fixed on both sides of the material cylinder (64); a vertical rod (67) slides inside the side plate (66) and is fixed on the turntable (63); a spring connects the side plate (66) and the turntable (63); The diameter of the first circular groove (61) is the same as the outer diameter of the material cylinder (64), and the outer diameter of the bottom of the conical hopper (5) is the same as the inner diameter of the material cylinder (64); the diameter of the second circular groove (62) is the same as the inner diameter of the material cylinder (64); The second circular groove (62) top is fixed with electric push rod (68) through mounting bracket, and the electric push rod (68) bottom is fixed with push disc (69).

9. The packaging film regeneration apparatus according to claim 8, characterized in that: The outer ring of the auger (51) is provided with an air pipe (7) mounted in the inner wall of the conical bin (5), and the air pipe (7) is in communication with an external air source; the air pipe (7) is provided with filter cloth. The opposite side of the cutter roller (12) is provided with an air hole (71) in the side wall of the treatment bin (1).

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