Packaging bag recycling device and process

Abstract

The present invention discloses a packaging bag recycling and processing device and process, which relates to the field of packaging bag processing technology, including: a mounting frame; a sectional component, which is fixedly mounted on the top of the mounting frame, and is used to crush the packaging bag; a processing box, which is fixedly connected to the top of the mounting frame, and is fixedly connected to a hopper on the top of the processing box, and the bottom of the processing box is connected to the sectional component, and a chip removal pipe is provided at the bottom of the hopper; a screening structure, which is provided at the bottom of the hopper. The present invention can scrape off the label paper attached to the outside of the packaging bag during the transportation of the packaging bag by providing a scraping component, and a rubbing component is provided to further remove the residual label paper after the scraping operation, so as to quickly remove the label paper mixed in the plastic packaging bag, realize paper-plastic separation, and avoid the label paper from being mixed in the plastic waste to affect the subsequent melting process, thereby greatly improving the effect of plastic bag recycling and processing.

Description

Technical Field

[0001] The present invention relates to the technical field of plastic packaging bag processing, and in particular to a packaging bag recycling processing device and process. Background Art

[0002] Plastic packaging bags are a common packaging material, usually used to package various commodities, food and care products, etc. It is lightweight, waterproof, moisture-proof and sealable, and is widely used in various places. However, disposable plastic products such as plastic packaging bags are difficult to degrade. Their long-term presence in the environment will cause serious pollution problems and affect the ecological balance and human health. By recycling plastic packaging bags, the emission of plastic products such as plastic bags can be reduced, and environmental pollution can be reduced.

[0003] After searching, a Chinese patent for a plastic bag recycling and reuse device and a plastic bag recycling and reuse process (publication number CN111283897B) is proposed in the prior art to solve the above-mentioned problems. The technical solution disclosed in the patent document is as follows: "The cleaned plastic bags are placed in the crushing box manually to achieve the purpose of loading; after the loading operation is completed, the opening and closing mechanism works to close the feed port, and then the motor starts to work to drive the driving gear to rotate and then drives the rotating gear to rotate through gear meshing, thereby driving the spiral cutter to rotate, thereby achieving the purpose of shredding the crushed bags; after the shredding operation is completed, the opening and closing mechanism opens, and the shredded plastic bags enter the melting barrel, and the melting barrel works to melt the shredded plastic bags." In the prior art, the plastic recycling process usually first shreds the plastic bags, and then melts the shredded plastics for recycling.

[0004] However, when a paper label is attached to the outside of the packaging bag, the plastic will melt directly after being crushed, and the label paper similar to the instruction manual or notes attached to the packaging bag (such as medical packaging bags) cannot be melted. Since the label paper does not react at the melting temperature of the plastic packaging bag and will adhere to the melted plastic, the plastic will carry a large amount of impurities after the melting operation, which not only affects its use but also causes blockage of the equipment. Therefore, it must be separated before recycling. The manual peeling method is labor-intensive, has high labor costs, and has low actual economic benefits. It is necessary to propose a packaging bag recycling and processing device that can peel off label paper. Summary of the invention

[0005] The object of the present invention is to provide a packaging bag recycling device and process to solve the problem that it is inconvenient to directly melt and recycle when label paper similar to instructions or notes is attached to the packaging bag.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0007] A packaging bag recycling and processing device comprises: a mounting frame; a cross-sectional component, which is fixedly mounted on the top of the mounting frame and is used for crushing the packaging bags; a processing box, which is fixedly connected to the top of the mounting frame, a feeding hopper is fixedly connected to the top of the processing box, the bottom of the processing box is connected to the cross-sectional component, and a chip discharge pipe is provided at the bottom of the feeding hopper; a screening structure, which is arranged at the bottom of the feeding hopper and is used for screening out vertically placed packaging bags; a feeding component, which is arranged inside the processing box and has two components arranged in the vertical direction; a scraping component, which is arranged on the outside of the feeding component and is used for scraping off label paper on the packaging bag; a kneading component, which is also arranged on the outside of the feeding component and is used for rubbing off label paper scraps remaining on the packaging paper.

[0008] By adopting the above technical scheme, a scraping component is provided to scrape off the label paper attached to the outside of the packaging bag during the transportation process, and a kneading component is provided to further remove the residual label paper after the scraping operation, thereby quickly removing the label paper mixed in the plastic packaging bag and realizing paper-plastic separation.

[0009] A further improvement of the technical solution of the present invention is that the feeding component includes two cylinders, which are symmetrically fixedly connected on both sides of the inner wall of the processing box, and a rotating drum is rotatably connected between the adjacent sides of the two cylinders. The central axes of both ends of the rotating drum are set as hollow shafts, and the ends of the hollow shafts away from the rotating drum extend to the outside of the processing box and are fixedly connected with rotating joints. One end of one of the rotating joints away from the hollow shaft is connected to the external air pump, and the end of the hollow shaft close to the air pump away from the rotating joint is fixedly connected with a shunt pipe. Two suction holes are symmetrically opened on the side wall of the rotating drum, and the suction holes are connected to the inside of the shunt pipe. A second motor is fixedly connected to the top of the mounting frame, and the output end of the second motor is connected to one of the hollow shafts through a belt and pulley transmission, and the hollow shafts on two different feeding components are connected through a belt and pulley transmission.

[0010] By adopting the above technical solution, negative pressure is drawn by an external vacuum pump, so that negative pressure is generated in the diversion pipe, and air is continuously sucked through the suction holes. When there is a packaging bag at the suction hole, the packaging bag will be adsorbed, so that the packaging bag can be transported along with the rotation of the drum.

[0011] A further improvement of the technical solution of the present invention is that the shaving component includes a first fixed frame, the first fixed frame is fixedly connected to the outer side of the column, a driven roller is rotatably connected between the inner sides of the first fixed frame through a torsion spring, the driven roller is arranged to be a columnar structure with diameters at both ends larger than the diameter of the central part, and a scraper is fixedly connected to the side wall of the driven roller; both ends of the driven roller are fixedly connected to limiting columns, two stop pins used in conjunction with the limiting columns are symmetrically fixedly connected to the two sides of the first fixed frame, a groove is provided on one side of the driven roller, and each corner of the groove is arranged to be a smooth rounded corner.

[0012] By adopting the above technical solution, when the packaging bag passes through the first fixed frame, the driven roller is tightly fitted against the packaging bag, and the driven roller will flip over as the packaging bag is conveyed until the limit column contacts the stop pin. At this time, the scraper is in contact with the surface of the packaging bag, and the paper label is scraped off during the conveying process of the packaging bag. After the packaging bag has completely passed, the driven roller is not in contact with the rotating drum, so the driven roller is reset under the action of the torsion spring, and the scraper is reset.

[0013] A further improvement of the technical solution of the present invention is that the kneading component includes a second fixed frame, the second fixed frame is fixedly connected to the outer side of the cylinder, a kneading roller is rotatably connected between the inner sides of the second fixed frame, the kneading rollers on two different feeding components are connected through belt and pulley transmission, one side of one of the second fixed frames is fixedly connected to a first motor, and the output end of the first motor is fixedly connected to the central axis of the kneading roller.

[0014] By adopting the above technical solution, when the packaging bag passes through the second fixed frame, the first motor is controlled to rotate back and forth, so that the rubbing roller rotates back and forth, and the speed is not equal to that of the rotating drum. During its rotation, it will rub against the packaging paper, thereby rubbing off the remaining paper scraps.

[0015] A further improvement of the technical solution of the present invention is that two positioning frames are symmetrically and fixedly connected to the outer side of the column, one side of the two positioning frames is slidably connected with a sliding rod, one end of the sliding rod is fixedly connected to a limiting block, the end of the sliding rod away from the limiting block extends to the interior of the positioning frame and is fixedly connected with a sliding block, a pressure roller is rotatably connected between the sides of the sliding blocks, and a first spring is sleeved on the outside of the sliding rod and located inside the positioning frame.

[0016] By adopting the above technical solution, a pressure roller is arranged in front of the kneading component on the conveyor line to squeeze the packaging bag. When the packaging bag is conveyed forward with the side without an opening and passes through the third fixed frame, it is flattened by the pressure roller and the air in the bag is discharged, so that the two sides of the packaging bag are tightly fitted into a whole, thereby reducing the relative friction between the two sides of the packaging bag during the kneading process.

[0017] A further improvement of the technical solution of the present invention is that a third fixing frame is also fixedly connected to the outer side of the column, and the third fixing frame is an H-shaped structure, including two vertical plates and a horizontal plate connecting the two vertical plates, and an insertion rod is slidably inserted on the horizontal plate of the third fixing frame, and one end of the insertion rod is set to a sharp structure, and the end of the insertion rod away from the sharp structure extends to the other side of the horizontal plate and is fixedly connected to a pad, and a second spring is sleeved on the outer side of the insertion rod, and a cam is rotatably connected between the two vertical plates of the third fixing frame. The cam is in contact with the pad, and one end of the cam center axis passes through the other side of one of the vertical plates and is connected to one end of the pressure roller center axis through a belt and pulley transmission, and a tensioning wheel for compensating for tension force is provided between the belt and the pulley.

[0018] By adopting the above technical solution, an insertion rod is set up, and the cam is driven to rotate through the belt and pulley transmission during the rotation of the pressure roller, and then the second spring is cooperated to make the pad reciprocate and drive the insertion rod to reciprocate. When the sharp structure of the insertion rod contacts the packaging bag and presses down, the packaging bag will be punctured, so that the bulging part can be flattened.

[0019] A further improvement of the technical solution of the present invention is that the screening structure comprises two parts, a material guiding part and a material storage part; the material storage part is fixedly connected to the bottom of the material guiding part; a material taking port is provided on one side of the material storage part and the material taking port is directly opposite to the rotating drum located above; a filter plate is fixedly connected to the bottom of the material storage part; the inner wall of the material guiding part is provided with a smooth arc surface; a partition plate is fixedly connected between the inner walls of the feeding hopper, and the partition plate is provided as an arc-shaped plate.

[0020] By adopting the above technical solution, after the packaging bag enters the hopper, it slides along the inner wall of the hopper under the action of gravity, and falls into the storage part after being guided. The packaging bag can be placed in the storage part in only two situations: with the opening facing up or facing down.

[0021] A further improvement of the technical solution of the present invention is that a side of another rotary joint away from the hollow shaft is connected to an external refrigeration device through a pipeline, and an exhaust hole is provided on the side wall of the rotating drum.

[0022] By adopting the above technical solution, external refrigeration equipment is used to provide cold air to the inside of the drum, so that the temperature of the drum is reduced, and the plastic packaging bags are cooled during the subsequent packaging bag transportation process. When the temperature of the plastic bag is reduced, the movement between plastic molecules is reduced, causing the plastic bag to harden and reduce its ductility. At the same time, the glue used to adhere the label paper also begins to solidify and the viscosity is weakened, so it can be easier to tear off.

[0023] A further improvement of the technical solution of the present invention is that a fan is fixedly installed on one side of the processing box, and the installation position of the fan is higher than the two feeding components, and a plurality of through holes are opened on one side of the feeding hopper close to the processing box.

[0024] By adopting the above technical solution, the processing box exhausts air from the inside to the outside. At this time, due to the weak viscosity of the above-mentioned cooling operation label paper, it will move to the side where the fan is located with the action of airflow and fall downward under the action of gravity.

[0025] The present invention also provides a packaging bag recycling process, comprising the following steps:

[0026] S1. Arrange the packaging bag by taking advantage of its shape characteristics so that the opening direction of the packaging bag is vertical;

[0027] After the packaging bags are sorted, they are placed in only two positions at the feeding part of the feeding component, one with the opening facing upwards or the other with the opening facing downwards, so as to facilitate subsequent transportation and processing;

[0028] S2. The sorted packaging bags are transported, and the packaging bags are subjected to low temperature treatment during transportation, and the temperature is controlled at 0-5°C;

[0029] The plastic bags are cooled during the transportation process. When the temperature of the plastic bags is lowered, the movement between the plastic molecules is reduced, causing the plastic bags to become hard and less ductile. At the same time, the glue used to adhere the label paper also begins to solidify and the viscosity is weakened, so it can be torn off more easily.

[0030] S3, shaving one side of the packaging bag during its conveying process;

[0031] Perform a peeling operation. When the scraper is attached to the surface of the packaging bag, the label paper is scraped off during the conveying process of the packaging bag.

[0032] S4. Press the packaging bag tightly until both sides are tightly fitted, and rub the remaining label paper on the packaging bag;

[0033] Perform secondary peeling, knead the label paper remaining after the above-mentioned scraping operation, so as to rub off the residual label paper, and compact the packaging bag and then knead it to reduce the mutual rubbing between the two sides of the packaging bag during the kneading process;

[0034] S5, turning the packaging bag over, and repeating steps S3 and S4;

[0035] S6. Collect dust from the plastic bag sorting process, and evenly spray the collected dust onto the scraped label paper after screening;

[0036] Through the above operation, on the one hand, the dust in the plastic can be reduced, thereby reducing the dust mixed in the subsequent crushing and melting operations; on the other hand, the dust is used to weaken the viscosity of the label paper, so that the label paper will not stick to the packaging bag, and at the same time avoid sticking to other parts of the inner wall of the processing box;

[0037] S7, crushing the processed packaging bags.

[0038] Due to the adoption of the above technical solution, the present invention has the following technical advances compared with the prior art:

[0039] 1. The present invention provides a packaging bag recycling and processing device and process. A scraping component is provided to scrape off the label paper attached to the outside of the packaging bag during the transportation process, and a kneading component is provided to further remove the residual label paper after the scraping operation, thereby quickly removing the label paper mixed in the plastic packaging bag, realizing paper-plastic separation, avoiding the mixing of the label paper in the plastic waste and affecting the subsequent melting process, and greatly improving the effect of plastic bag recycling and processing.

[0040] 2. The present invention provides a scraper that can flip along with the driven roller. When the packaging bag passes through the first fixed frame, the driven roller fits tightly against the packaging bag and flips along with the packaging bag being conveyed until the limit column contacts the stop pin. At this time, the scraper fits against the surface of the packaging bag and scrapes off the paper label along with the conveying process of the packaging bag. After the packaging bag has completely passed, the driven roller is not in contact with the rotating drum, so the driven roller is reset under the action of the torsion spring, and the scraper is reset, thereby preventing the packaging bag from being cut by the scraper when passing through the opening position, causing the packaging bag to be torn.

[0041] 3. The present invention provides a rubbing roller, which can control the first motor to reciprocate when the packaging bag passes through the second fixed frame, so that the rubbing roller reciprocates, and the rotation speed is not equal to that of the rotating drum. During its rotation, it will rub against the packaging paper, thereby rubbing off the remaining paper scraps.

[0042] 4. The present invention arranges a pressure roller in front of the kneading component on the conveyor line to squeeze the packaging bag. When the packaging bag is conveyed forward with the side without an opening and passes through the third fixed frame, it is flattened by the pressure roller and the air in the bag is discharged, so that the two sides of the packaging bag are tightly fitted into a whole, thereby reducing the relative rubbing of the two sides of the packaging bag during the kneading process.

[0043] 5. The present invention arranges an insertion rod, which drives the cam to rotate through the belt and the pulley during the rotation of the pressure roller, and then cooperates with the second spring to make the pad reciprocate and drive the insertion rod to reciprocate. When the sharp structure of the insertion rod contacts the packaging bag and presses down, the packaging bag will be punctured, so that the bulged part can be flattened. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] The present invention will be further described below in conjunction with the accompanying drawings.

[0045] Figure 1 It is a schematic diagram of the structure of the present invention from the first viewing angle as a whole;

[0046] Figure 2 It is a schematic diagram of the structure of the second viewing angle of the whole invention;

[0047] Figure 3 It is a cross-sectional structural schematic diagram of the present invention;

[0048] Figure 4 This is a cross-sectional structural schematic diagram of the present invention in a state where one of the feeding components is hidden;

[0049] Figure 5 It is a schematic diagram of the structure of the column and the drum of the present invention;

[0050] Figure 6 It is a schematic diagram of the internal structure of the rotary drum of the present invention;

[0051] Figure 7 It is a structural schematic diagram of the feeding component of the present invention;

[0052] Figure 8 It is a structural schematic diagram of the feeding hopper of the present invention;

[0053] Fig. 9 It is a schematic cross-sectional view of the feeding hopper of the present invention;

[0054] Fig.10 It is a schematic diagram of the structure of the shaving component of the present invention;

[0055] Fig.11 For the present invention Figure 5 Enlarged view of point A in the middle.

[0056] In the figure: 1. mounting frame; 2. cross-sectional component; 3. processing box; 4. feeding hopper; 401. material storage part; 402. material guiding part; 403. arc surface; 404. partition plate; 5. chip removal pipe; 6. column; 7. rotating drum; 8. hollow shaft; 9. diverter pipe; 10. suction hole; 11. first fixed frame; 12. driven roller; 13. scraper; 14. limiting column; 15. stop pin; 16. groove; 17. second fixed frame; 18. kneading roller; 19. first motor; 20. positioning frame; 21. sliding rod; 22. sliding block; 23. first spring; 24. pressure roller; 25. third fixed frame; 26. second spring; 27. pad; 28. plug rod; 29. ​​cam; 30. fan; 31. second motor; 32. through hole. DETAILED DESCRIPTION

[0057] The present invention is further described in detail below in conjunction with embodiments:

[0058] Example 1

[0059] like Figure 1-Figure 11As shown, the present invention provides a packaging bag recycling and processing device, comprising: a mounting frame 1; a cross-sectional component 2, the cross-sectional component 2 is fixedly mounted on the top of the mounting frame 1, and the cross-sectional component 2 is used for crushing the packaging bags; a processing box 3, the processing box 3 is fixedly connected to the top of the mounting frame 1, and a feeding hopper 4 is fixedly connected to the top of the processing box 3, the bottom of the processing box 3 is connected to the cross-sectional component 2, and a chip discharge pipe 5 is provided at the bottom of the feeding hopper 4; a screening structure, the screening structure is arranged at the bottom of the feeding hopper 4, and the screening structure is used to screen out vertically placed packaging bags; a feeding component, the feeding component is arranged inside the processing box 3 and two are arranged in the vertical direction; a scraping component, the scraping component is arranged on the outside of the feeding component, and the scraping component is used to scrape off the label paper on the packaging bag; a kneading component, the kneading component is also arranged on the outside of the feeding component, and the kneading component is used to rub off the label paper scraps remaining on the packaging paper.

[0060] In this embodiment, a scraping component is provided to scrape off the label paper attached to the outside of the packaging bag during the conveying process, and a rubbing component is provided to further remove the residual label paper after the scraping operation, thereby being able to quickly remove the label paper mixed in the plastic packaging bag, realize paper and plastic separation, avoid the label paper mixing in the plastic waste and affect the subsequent melting process, and greatly improve the effect of plastic bag recycling.

[0061] like Figure 5 and Figure 6 As shown, preferably, the feeding component includes two cylinders 6, the two cylinders 6 are symmetrically fixedly connected on both sides of the inner wall of the processing box 3, and a rotating drum 7 is rotatably connected between the adjacent sides of the two cylinders 6. The central axes of both ends of the rotating drum 7 are set as hollow shafts 8, and the ends of the hollow shafts 8 away from the rotating drum 7 extend to the outside of the processing box 3 and are fixedly connected with rotating joints, one end of one of the rotating joints away from the hollow shaft 8 is connected to the external air pump, and the end of the hollow shaft 8 close to the air pump away from the rotating joint is fixedly connected to a shunt pipe 9, and two suction holes 10 are symmetrically opened on the side wall of the rotating drum 7, and the suction holes 10 are connected to the inside of the shunt pipe 9, and a second motor 31 is fixedly connected to the top of the mounting frame 1, and the output end of the second motor 31 is connected to one of the hollow shafts 8 through a belt and pulley transmission, and the hollow shafts 8 on two different feeding components are connected through a belt and pulley transmission.

[0062] In this embodiment, negative pressure is drawn by an external vacuum pump to generate negative pressure in the shunt pipe 9, and air is continuously sucked through the suction hole 10. When a packaging bag exists at the position of the suction hole 10, the packaging bag will be adsorbed, so that the packaging bag can be transported along with the rotation of the drum 7. A solenoid valve is arranged between the vacuum pump and the rotary joint. The feeding component at the top is set to be turned on when the suction hole 10 is facing the material storage part 401, and the suction hole 10 obtains negative pressure to adsorb the packaging bag. After rotating a certain amount (relative to the position of the suction hole 10), the solenoid valve is controlled to be closed until it is rotated to face the material storage part 401 again. The rotation amount is less than the sum of half of the circumference of the end face of the drum 7 and the length of the packaging bag. Specifically, the suction hole 10 of the second feeding component is facing the packaging bag, and there is no label paper at this position. At this time, the solenoid valve corresponding to the second feeding component is turned on, and then the packaging bag is adsorbed by negative pressure, and the packaging bag is fed on the second feeding component until the end of the packaging bag is separated from the rubbing roller 18, and then the corresponding solenoid valve is controlled to be closed, so that the packaging bag can be released.

[0063] like Figure 6 As shown, preferably, the side of the other rotary joint away from the hollow shaft 8 is connected to the external refrigeration equipment through a pipeline, and an exhaust hole is provided on the side wall of the drum 7.

[0064] In this embodiment, cold air is provided to the inside of the drum 7 by an external refrigeration device, so that the temperature of the drum 7 is reduced, and then the plastic packaging bags are cooled during the subsequent packaging bag transportation process. When the temperature of the plastic bags is reduced, the movement between the plastic molecules is reduced, causing the plastic bags to become hard and the ductility to decrease. At the same time, the glue used to adhere the label paper also begins to solidify and the viscosity is weakened, so it can be torn off more easily.

[0065] Among them, the exhaust hole is set at the edge of the side wall of the drum 7, and the aperture is set small. When the cold flow is injected into the drum 7, it can promote the discharge of air inside the drum 7. When the refrigeration equipment does not inject cold air, the cold air is limited by the aperture and only loses slowly.

[0066] like Figure 5 and Fig.10 As shown, preferably, the shaving component includes a first fixed frame 11, the first fixed frame 11 is fixedly connected to the outer side of the column 6, and a driven roller 12 is rotatably connected between the inner sides of the first fixed frame 11 through a torsion spring, and the driven roller 12 is arranged as a columnar structure with diameters at both ends larger than the diameter of the central part, and a scraper 13 is fixedly connected to the side wall of the driven roller 12; both ends of the driven roller 12 are fixedly connected to a limiting column 14, and two stop pins 15 used in conjunction with the limiting column 14 are symmetrically fixedly connected to both sides of the first fixed frame 11, and a groove 16 is provided on one side of the driven roller 12, and each corner of the groove 16 is arranged as a smooth rounded corner.

[0067] In this embodiment, when the packaging bag passes through the first fixed frame 11, the driven roller 12 fits tightly against the packaging bag, and the driven roller 12 flips over as the packaging bag is conveyed until the limit column 14 contacts the stop pin 15. At this time, the scraper 13 fits against the surface of the packaging bag, and scrapes off the paper label during the conveying process of the packaging bag. After the packaging bag has completely passed, since the driven roller 12 is not in contact with the rotating drum 7, the driven roller 12 is reset under the action of the torsion spring, and the scraper 13 is reset (in the above process, since the paper label of the packaging bag is usually attached to the middle of the packaging bag, the label paper will not pass before the scraper 13 contacts when the packaging bag contacts the driven roller 12 in the early stage).

[0068] like Figure 5 and Fig.11 As shown, preferably, the kneading component includes a second fixed frame 17, the second fixed frame 17 is fixedly connected to the outer side of the column 6, and a kneading roller 18 is rotatably connected between the inner sides of the second fixed frame 17, and the kneading rollers 18 located on two different feeding components are connected through belt and pulley transmission, and a first motor 19 is fixedly connected to one side of one of the second fixed frames 17, and the output end of the first motor 19 is fixedly connected to the central axis of the kneading roller 18.

[0069] In this embodiment, when the packaging bag passes through the second fixed frame 17, the first motor 19 is controlled to rotate back and forth, so that the rubbing roller 18 rotates back and forth, and the rotation speed is not equal to the rotating drum 7. During its rotation, it will rub against the packaging paper, thereby rubbing off the remaining paper scraps.

[0070] Example 2

[0071] like Fig.11 As shown, on the basis of Example 1, the present invention provides a technical solution: preferably, two positioning frames 20 are symmetrically fixedly connected to the outer side of the column 6, and one side of the two positioning frames 20 is slidably connected with a slide rod 21, one end of the slide rod 21 is fixedly connected to a limiting block, and the end of the slide rod 21 away from the limiting block extends to the interior of the positioning frame 20 and is fixedly connected with a slider 22, a pressure roller 24 is rotatably connected between the adjacent sides of the slider 22, and a first spring 23 is sleeved on the outside of the slide rod 21 and located inside the positioning frame 20.

[0072] Since the packaging bag has a two-layer structure, when it is rubbed, the two layers are likely to rub against each other, thereby affecting the rubbing effect, and at the same time causing the packaging bag and the label paper to wrinkle together;

[0073] In this embodiment, a pressure roller 24 is provided in front of the kneading component on the conveyor line to squeeze the packaging bag. When the packaging bag is conveyed forward with the side without an opening and passes through the third fixed frame 25, it is flattened by the pressure roller 24 and the air in the bag is discharged, so that the two sides of the packaging bag are tightly fitted into a whole, thereby reducing the relative friction between the two sides of the packaging bag during the kneading process.

[0074] Example 3

[0075] like Fig.11 As shown, on the basis of Example 2, the present invention provides a technical solution: preferably, a third fixing frame 25 is also fixedly connected to the outer side of the column 6, and the third fixing frame 25 is an H-shaped structure, including two vertical plates and a horizontal plate connecting the two vertical plates, and an insertion rod 28 is slidably inserted on the horizontal plate of the third fixing frame 25, and one end of the insertion rod 28 is set to a sharp structure, and the end of the insertion rod 28 away from the sharp structure extends to the other side of the horizontal plate and is fixedly connected to a pad 27, and a second spring 26 is sleeved on the outer side of the insertion rod 28, and a cam 29 is rotatably connected between the two vertical plates of the third fixing frame 25. The cam 29 contacts the pad 27, and one end of the central axis of the cam 29 passes through the other side of one of the vertical plates and is connected to one end of the central axis of the pressure roller 24 through a belt and pulley transmission, and a tensioning wheel for compensating for the tension force is provided between the belt and the pulley.

[0076] Since the packaging bag not only has the side without an opening facing forward, but also has the side with an opening facing forward, when the side with the opening passes the third fixed frame 25 ahead, the compaction process of the pressing roller 24 will make it impossible for the gas inside the packaging bag to be discharged, and the accompanying flattening process will cause the gas to accumulate and thus cause the packaging bag to expand.

[0077] In this embodiment, by providing an insertion rod 28, the cam 29 is driven to rotate through the belt and pulley transmission during the rotation of the pressure roller 24, and then the second spring 26 is cooperated to make the pad 27 reciprocate and drive the insertion rod 28 to reciprocate. When the sharp structure of the insertion rod 28 contacts the packaging bag and presses down, the packaging bag will be punctured, so that the bulged part can be flattened.

[0078] Example 4

[0079] like Figure 8 and Fig. 9As shown, on the basis of Example 3, the present invention provides a technical solution: preferably, the screening structure includes two parts, a material guide part 402 and a material storage part 401, the material storage part 401 is fixedly connected to the bottom of the material guide part 402, one side of the material storage part 401 is provided with a material taking port and the material taking port is directly opposite to the rotating drum 7 located above, a filter plate is fixedly connected to the bottom of the material storage part 401, the inner wall of the material guide part 402 is provided with a smooth arc surface 403, and a partition plate 404 is fixedly connected between the inner walls of the feeding hopper 4, and the partition plate 404 is set as an arc plate.

[0080] In this embodiment, after the packaging bag enters the feeding hopper 4, it slides along the inner wall of the feeding hopper 4 under the action of gravity. The shape of the storage part 401 on the feeding hopper 4 is adapted to the shape of the packaging paper to be processed, and the dimensions of the storage part 401 in three directions are slightly larger than the packaging bag, while the lengths of the packaging bag itself in the three directions are different. Here, for the packaging bag with a label facing the front (or rear), the lengths in the three directions are from large to small: the length in the vertical (up and down) direction, the width in the horizontal (left and right) direction, and the thickness in the front and back directions. When the packaging bag slides along the material guide part 402 to the storage part 401, it will only move vertically or inverted, and other angles will not be accepted by the caliber of the storage part 401. Therefore, the packaging bag only exists in two situations in the storage part 401: upright (opening facing upward) and inverted (opening facing downward).

[0081] Among them, since the device is installed as a whole on the mounting frame 1, the vibration generated by the operation of each component (including the motor and other mechanical structures) can be used for auxiliary sorting.

[0082] Example 5

[0083] like Figure 5 and Figure 6 As shown, based on Example 1, the present invention provides a technical solution: preferably, a fan 30 is fixedly installed on one side of the processing box 3, and the installation position of the fan 30 is higher than the two feeding components, and a plurality of through holes 32 are opened on the side of the feeding hopper 4 close to the processing box 3.

[0084] In this embodiment, the fan 30 is controlled to exhaust air from the inside to the outside of the processing box 3. At this time, due to the above-mentioned cooling operation, the label paper has weak viscosity, and it will move to the side where the fan 30 is located with the action of the airflow, and fall downward under the action of gravity. It is affected by the airflow in the horizontal direction and the combined effect of gravity and airflow in the vertical direction. A through hole 32 is provided on one side of the feeding hopper 4, and external air can pass through the feeding hopper 4 and enter the processing box 3 through the through hole 32. In the process, impurities such as dust on the packaging bag will be sucked into the processing box 3. The dust adhering to the label paper will further weaken the viscosity of the glue. This process is intended to reduce the amount of dust falling into the crushing box, and at the same time use the dust to weaken the viscosity of the glue on the label paper to avoid adhering to other parts of the inner wall of the processing box 3.

[0085] The present invention also provides a packaging bag recycling process, comprising the following steps:

[0086] S1. Arrange the packaging bag by taking advantage of its shape characteristics so that the opening direction of the packaging bag is vertical;

[0087] After the packaging bags are sorted, they are placed in only two positions at the feeding part of the feeding component, one with the opening facing upwards or the other with the opening facing downwards, so as to facilitate subsequent transportation and processing;

[0088] S2. The sorted packaging bags are transported, and the packaging bags are subjected to low temperature treatment during transportation, and the temperature is controlled at 0-5°C;

[0089] The plastic bags are cooled during the transportation process. When the temperature of the plastic bags is lowered, the movement between the plastic molecules is reduced, causing the plastic bags to become hard and less ductile. At the same time, the glue used to adhere the label paper also begins to solidify and the viscosity is weakened, so it can be torn off more easily.

[0090] S3, shaving one side of the packaging bag during its conveying process;

[0091] Perform a peeling operation, when the scraper 13 is attached to the surface of the packaging bag, the label paper is scraped off along with the conveying process of the packaging bag;

[0092] S4. Press the packaging bag tightly until both sides are tightly fitted, and rub the remaining label paper on the packaging bag;

[0093] Perform secondary peeling, knead the label paper remaining after the above-mentioned scraping operation, so as to rub off the remaining label paper, and compact the packaging bag and then knead it to reduce the mutual rubbing between the two sides of the packaging bag during the kneading process;

[0094] S5, turning the packaging bag over, and repeating steps S3 and S4;

[0095] S6. Collect dust from the plastic bag sorting process, and evenly spray the collected dust onto the scraped label paper after screening;

[0096] Through the above operation, on the one hand, the dust in the plastic can be reduced, thereby reducing the dust mixed in the subsequent crushing and melting operations. On the other hand, the dust is used to weaken the viscosity of the label paper, so that the label paper will not adhere to the packaging bag, and at the same time avoid adhering to other parts of the inner wall of the processing box 3;

[0097] S7, crushing the processed packaging bags.

[0098] The working principle of the packaging bag recycling and processing device and process is described in detail below.

[0099] like Figure 1-Figure 11 As shown, the rotating drums 7 on the two feeding components in the device rotate in the same direction, and from the perspective of the rotating drum 7 rotating clockwise, the first fixing frame 11, the third fixing frame 25, the positioning frame 20 and the second fixing frame 17 are sequentially arranged clockwise; wherein, the driven roller 12 does not contact the rotating drum 7, and there is a small gap between it and the column 6, and the gap is smaller than the overall thickness of the packaging paper;

[0100] Discarded plastic packaging bags of similar specifications are put into the hopper 4 (such as medical external packaging bags). During processing, cold air is provided to the inside of the drum 7 through an external refrigeration device, so that the temperature of the drum 7 is reduced, and then the plastic packaging bags are cooled during the subsequent packaging bag transportation process. When the temperature of the plastic bag is reduced, the movement between the plastic molecules is reduced, causing the plastic bag to harden and reduce its ductility. At the same time, the glue used to adhere the label paper also begins to solidify and the viscosity is weakened, so it can be torn off more easily;

[0101] After the packaging bag enters the hopper 4, it slides along the inner wall of the guide part 402 under the action of gravity. The shape of the storage part 401 on the guide part 402 is adapted to the shape of the packaging paper to be processed, and the dimensions of the storage part 401 in three directions are slightly larger than the packaging bag, while the lengths of the packaging bag itself in the three directions are different. Here, for the packaging bag with a label facing the front (or rear), the lengths in the three directions from large to small are: length in the vertical (up and down) direction, width in the horizontal (left and right) direction, and thickness in the front and back direction. When the packaging bag slides along the guide part 402 to the storage part 401, it will only move vertically or inverted, and other angles will not be accepted by the caliber of the storage part 401. Therefore, the packaging bag only exists in the storage part 401 in two situations: upright (opening upward) and inverted (opening downward);

[0102] Based on the above two situations, in each case, there are two situations: the label is facing the feeding component and the label is facing away from the feeding component. Therefore, there are still four situations for the posture of the packaging bag during the feeding process:

[0103] Situation 1: the label paper faces away from the drum 7 and the opening of the packaging bag faces downwards. When the drum 7 rotates to the point where the suction hole 10 faces the packaging bag, the suction hole 10 absorbs the packaging bag, so that the drum 7 carries the packaging bag and rotates around the cylinder 6 to complete the feeding. When the packaging bag passes through the first fixed frame 11, the driven roller 12 is in close contact with the packaging bag, and the driven roller 12 is turned over as the packaging bag is conveyed until the limit column 14 contacts the stop pin 15. At this time, the scraper 13 is in contact with the surface of the packaging bag, and the above-mentioned packaging bag is conveyed. The label paper is scraped off, and after the packaging bag has completely passed, since the driven roller 12 is not in contact with the rotating drum 7, the driven roller 12 is reset under the action of the torsion spring, and the scraper 13 is reset (in the above process, since the label paper of the packaging bag is usually attached to the middle of the packaging bag, the label paper will not pass before the scraper 13 contacts the driven roller 12 at the beginning of the packaging bag contacting the driven roller 12); when it passes through the third fixed frame 25, it is flattened by the pressing roller 24, and the air in the bag is discharged, so that the two sides of the packaging bag are The surfaces are tightly fitted into a whole; when the air inside the above-mentioned packaging bag is discharged, it passes through the second fixed frame 17, and the motor works to make the rubbing roller 18 reciprocate, and the rotation speed is not equal to the rotating drum 7. During its rotation, it will rub against the packaging paper, and then rub off the remaining paper scraps; after the above-mentioned two peeling operations, the packaging paper enters the second feeding component, specifically when the packaging paper is fed to the bottom of the feeding component located above, negative pressure is provided to the feeding component below, so that the suction hole 10 adsorbs the packaging bag. At the same time, the feeding component located above temporarily stops providing negative pressure and releases the packaging bag, so that the packaging bag is received by the second feeding component, and after the same treatment as above, the negative pressure is stopped from being provided to the feeding component below after the packaging bag is completely separated from the rubbing roller 18, and the packaging bag is released. At this time, the packaging bag falls off and falls into the cross-sectional component 2. When the above-mentioned packaging bag passes through the second feeding component, since the side away from the feeding component does not carry label paper, no specific peeling operation will be performed;

[0104] Case 2: The label paper is facing the rotating drum 7 and the opening of the packaging bag is facing downward. During the process of being sucked and fed by the first rotating drum 7, since the side of the packaging bag with the label paper faces the rotating drum 7, it cannot be scraped or rubbed off by the structure of the first feeding component. Therefore, when passing through the first feeding component, each component operates but cannot peel off the label paper until the packaging bag is received by the second feeding component. Since during the process of the packaging bag being fed from the first feeding component to the second feeding component, the side of the packaging paper with the label faces the rotating drum 7 located above, after being sucked by the lower rotating drum 7, the side of the packaging bag with the label faces away from the lower rotating drum 7. Therefore, during the process of being fed by the second feeding component, the label paper can be peeled off by the same method as in Case 1.

[0105] Case 3: The label paper faces away from the drum 7 and the bag opening faces upward. Since the opening faces upward, the label paper will be transported forward on the side with the opening during the feeding process on the first drum 7. In the early stage of passing through the driven roller 12, since the scraper 13 does not touch the bag at the beginning, there is no situation where the two sides of the bag are rubbed against each other and cut by the scraper 13. In this process, the scraper 13 will not turn over until the driven roller 12 presses the opening position (the bag must move a certain distance at the bottom of the driven roller 12 before the scraper 13 turns over to contact the bag. This distance makes the bag opening position leave the scraper 13 position). When reaching the pressure roller 24, due to the large width of the pressure roller 24, the scraper 13 will not turn over until the bag opening is touched. For packaging bags, during the process of flattening the packaging bags, there may be a situation where the gas inside the packaging bags cannot be discharged, and the flattening process will cause the gas to gather and then expand the packaging bags. During the rotation of the pressing roller 24, the cam 29 will be driven to rotate through the belt and the pulley transmission, and then the second spring 26 will cooperate to make the pad 27 reciprocate and drive the insertion rod 28 to reciprocate. When the sharp structure of the insertion rod 28 contacts the packaging bag and presses down, the packaging bag will be punctured, so that the bulging part can be flattened, and the subsequent kneading operation will not be affected. When the plastic bag reaches the second feeding component, the label has been cleaned and it is only transported with the second feeding component.

[0106] Case 4: The label paper is facing the rotating drum 7 and the opening of the packaging bag is facing upward. In this state, the packaging bag is not scraped or rubbed when passing through the first feeding component, but will be punctured; and when it is fed to the second feeding component, the label paper will be scraped and rubbed in the same way as above.

[0107] After the above-mentioned label paper removal operation, the packaging bag is sent to the top of the crushing box by the second feeding component and then released, and falls into the cross-sectional component 2, and is crushed with the operation of the cross-sectional component 2; a fan 30 is installed on one side of the processing box 3, and the fan 30 is controlled to exhaust air from the inside to the outside of the processing box 3. At this time, due to the above-mentioned cooling operation, the label paper has weak viscosity, and with the action of airflow, it will move to the side where the fan 30 is located, and fall downward under the action of gravity (affected by airflow in the horizontal direction, and by the superposition of gravity and airflow in the vertical direction). A through hole 32 is opened on one side of the hopper 4, and external air can pass through the hopper 4 and enter the processing box 3 through the through hole 32. In the process, impurities such as dust on the packaging bag will be sucked into the processing box 3, and the dust adhering to the label paper will further weaken the viscosity of the glue (this process is intended to reduce the amount of dust falling into the crushing box, and at the same time use the dust to weaken the viscosity of the glue on the label paper to avoid adhering to other parts of the inner wall of the processing box 3).

[0108] The length of the kneading roller 18 is smaller than the width of the packaging bag and larger than the width of the label paper, so that the gas in the packaging bag will not accumulate and expand during the kneading process.

[0109] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A packaging bag recycling device, characterized in that: include: Mounting frame; A cutting component, which is fixedly mounted on the top of the mounting frame and is used to break the packaging bag; A processing box, the processing box is fixedly connected to the top of the mounting frame, a feeding hopper is fixedly connected to the top of the processing box, the bottom of the processing box is connected to the cross-sectional component, and a chip discharge pipe is provided at the bottom of the feeding hopper; A screening structure, which is arranged at the bottom of the feeding hopper and is used to screen out the vertically placed packaging bags. The screening structure includes a material guide part and a material storage part. The material storage part is fixedly connected to the bottom of the material guide part. A feeding component, the feeding component is arranged inside the processing box and two are arranged in the vertical direction, the feeding component includes two cylinders, the two cylinders are symmetrically fixedly connected to the two sides of the inner wall of the processing box, a rotating drum is rotatably connected between the two cylinders on the sides close to each other, the central axes of the two ends of the rotating drum are arranged as hollow shafts, the ends of the hollow shafts away from the rotating drum are extended to the outside of the processing box and are fixedly connected with rotating joints, one end of one of the rotating joints away from the hollow shaft is connected to an external air pump, the end of the hollow shaft close to the air pump away from the rotating joint is fixedly connected to a shunt pipe, the side wall of the rotating drum is symmetrically provided with two suction holes, and the suction holes are connected to the inside of the shunt pipe; A shaving component, which is arranged on the outside of the feeding component and is used to scrape off the label paper on the packaging bag. The shaving component includes a first fixing frame, which is fixedly connected to the outside of the column, and a driven roller is rotatably connected to the inside of the first fixing frame through a torsion spring. The driven roller is set as a columnar structure with a diameter at both ends larger than that at the central part, and a scraper is fixedly connected to the side wall of the driven roller; A rubbing component is also arranged on the outside of the feeding component, and is used to rub off the label paper scraps remaining on the packaging paper. The rubbing component includes a second fixed frame, and the second fixed frame is fixedly connected to the outside of the column. A rubbing roller is rotatably connected between the inner sides of the second fixed frame. The rubbing rollers on two different feeding components are connected through belts and pulleys.

2. A packaging bag recycling device according to claim 1, characterized in that: A second motor is fixedly connected to the top of the mounting frame, and an output end of the second motor is connected to one of the hollow shafts through a belt and a pulley transmission, and the hollow shafts on two different feeding components are connected to each other through a belt and a pulley transmission.

3. A packaging bag recycling device according to claim 2, characterized in that: Both ends of the driven roller are fixedly connected to the limiting columns, and two stop pins used in conjunction with the limiting columns are symmetrically fixedly connected to the two sides of the first fixing frame. A groove is opened on one side of the driven roller, and each corner of the groove is set to a smooth rounded corner.

4. The packaging bag recycling device according to claim 3, characterized in that: A first motor is fixedly connected to one side of one of the second fixing frames, and an output end of the first motor is fixedly connected to the central axis of the kneading roller.

5. The packaging bag recycling device according to claim 4, characterized in that: Two positioning frames are symmetrically and fixedly connected to the outer side of the column, and a sliding rod is slidably connected to one side of the two positioning frames, one end of the sliding rod is fixedly connected to a limiting block, and the end of the sliding rod away from the limiting block extends to the interior of the positioning frame and is fixedly connected to a slider, a pressure roller is rotatably connected between the adjacent sides of the slider, and a first spring is sleeved on the outer side of the sliding rod and located inside the positioning frame.

6. The packaging bag recycling device according to claim 5, characterized in that: The outer side of the column is also fixedly connected to a third fixing frame, and the third fixing frame is an H-shaped structure, including two vertical plates and a horizontal plate connecting the two vertical plates, and an insertion rod is slidably inserted on the horizontal plate of the third fixing frame, and one end of the insertion rod is set to a sharp structure, and the end of the insertion rod away from the sharp structure extends to the other side of the horizontal plate and is fixedly connected to a pad, and a second spring is sleeved on the outer side of the insertion rod, and a cam is rotatably connected between the two vertical plates of the third fixing frame on the side where they are close to each other, and the cam is in contact with the pad, and one end of the cam center axis passes through the other side of one of the vertical plates and is connected to one end of the pressure roller center axis through a belt and pulley transmission, and a tensioning wheel for compensating for tension force is provided between the belt and the pulley.

7. The packaging bag recycling device according to claim 1, characterized in that: The material storage part has a material taking port on one side and the material taking port faces the rotating drum above, a filter plate is fixedly connected to the bottom of the material storage part, the inner wall of the material guide part is provided with a smooth curved surface, a partition plate is fixedly connected between the inner walls of the feeding hopper, and the partition plate is provided as an arc-shaped plate.

8. The packaging bag recycling device according to claim 2, characterized in that: The other side of the rotary joint away from the hollow shaft is connected to the external refrigeration equipment through a pipeline, and an exhaust hole is arranged on the side wall of the rotary drum.

9. The packaging bag recycling device according to claim 1, characterized in that: A fan is fixedly installed on one side of the processing box, and the installation position of the fan is higher than the two feeding components. A plurality of through holes are opened on one side of the feeding hopper close to the processing box.

10. A packaging bag recycling process, applicable to the packaging bag recycling device according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. Arrange the packaging bag by taking advantage of its shape characteristics so that the opening direction of the packaging bag is vertical; S2. The sorted packaging bags are transported, and the packaging bags are subjected to low temperature treatment during transportation, and the temperature is controlled at 0-5°C; S3, shaving one side of the packaging bag during its conveying process; S4. Press the packaging bag tightly until both sides are tightly fitted, and rub the remaining label paper on the packaging bag; S5, turning the packaging bag over, and repeating steps S3 and S4; S6. Collect dust from the plastic bag sorting process, and evenly spray the collected dust onto the scraped label paper after screening; S7, crushing the processed packaging bags.

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