Waste film recycling device and method

Abstract

The present invention relates to the technical field of waste film for die-cutting machines, and in particular to a waste film recycling device and method. A workbench is provided, wherein unwinding drums and winding drums are symmetrically arranged at the edges of both ends of the workbench, and a cleaning disk installation unit is lifted and lowered directly above the workbench; a plurality of groups of debris cleaning units are rotatably connected below the cleaning disk installation unit; the debris cleaning unit comprises a cleaning disk with a trumpet-shaped structure, and a chassis is installed at the bottom of the cleaning disk. The present invention increases the contact time between the scraper plate and the surface of the waste film adhesive layer and increases the cleaning force. At the same time, the preheated, softened and scraped adhesive layer is re-applied in a rotating form by a smear plate, so that the adhesive layer is more evenly distributed and does not accumulate, thereby affecting subsequent recycling. While improving the debris cleaning effect, the quality of the subsequent secondary utilization of the waste film is guaranteed.

Description

Technical Field

[0001] The invention belongs to the technical field of waste film of die cutting machines, and in particular relates to a waste film recycling device and method. Background Art

[0002] When the die-cutting machine is working, it will die-cut the main part, and the remaining scraps need to be collected by waste film for unified treatment. The main method is to stick the scraps through the adhesive layer of the waste film. In order to reduce waste and save costs, it is necessary to scrape off the scraps on the surface of the waste film after use and reuse the waste film. Therefore, professional recycling equipment is needed to deal with the scraps on the surface of the waste film.

[0003] After searching, the cited authorization announcement number is CN116274175B, and the announcement date is July 18, 2023. The patent document is named "A waste film circulation and efficient recycling processing device and method". The waste film roll is installed on the placement roller with the sticky side of the waste film facing up, and the top shell of the stripping shell is opened. The led waste film is passed through the two sets of guide rollers in the stripping shell in turn, and the edges of the waste film are passed through the belt sleeves on both sides, and then through the sharp end of the resistance block. The high temperature is blown to the surface of the waste discharge film through the entire heating fan to reduce the adhesive strength between the waste discharge film and the waste material, and at the same time, the two sides of the waste discharge film are pressed by the belt sleeve to form gaps on the edges of the two sides of the waste discharge film. At the same time, a fixed column is installed on the entire horizontal plate, and a sleeve column is sleeved on the fixed column. A second gear is movably connected to the horizontal plate, and the second gear is meshed with the inner wall of the belt sleeve, causing the rotating second gear to continuously squeeze the sleeve column. At the same time, a first spring is installed between the sleeve columns. Under the action of the first spring, the sleeve column continuously hits the vibration block on the horizontal plate, causing the entire belt sleeve to vibrate while rotating, thereby increasing the gap between the waste discharge film and the waste material, which is beneficial for the entire resistance block to scrape off the soft material waste on the waste discharge film in the later stage.

[0004] However, the above embodiment still has the following beneficial effects:

[0005] After preheating, the above embodiment only uses a set of blades to scrape the material from a single direction, which not only makes it difficult to scrape off the debris with strong adhesion, but also scrapes off the glue layer, making it difficult to reapply evenly, which not only reduces the cleaning effect of the debris, but also affects the subsequent recycling of the waste film. Summary of the invention

[0006] In view of the above problems, the present invention provides a waste film recycling device, comprising a workbench, wherein an unwinding drum and a winding drum are symmetrically arranged at the edges of both ends of the workbench, and a cleaning disc installation unit is lifted and lowered directly above the workbench;

[0007] A plurality of groups of crushed material cleaning units are rotatably connected below the cleaning disc installation unit;

[0008] The scrap cleaning unit comprises a cleaning disc with a trumpet-shaped structure, a bottom plate is installed at the bottom of the cleaning disc, and a plurality of scraping mechanisms are distributed in a circular array at the bottom of the cleaning disc;

[0009] Several groups of scraping mechanisms rotate and scrape and absorb the debris on the surface of the waste film with the central axis of the chassis as the center, avoiding the residue caused by scraping in a single direction and preventing the rubber layer on the surface of the waste film from detaching.

[0010] Furthermore, a preheating unit is provided on one side of the cleaning disc installation unit close to the unwinding drum; the preheating unit comprises two sets of side plates, the two sets of side plates are symmetrically installed at the edges of both sides of the top of the workbench, an upper preheating roller is rotatably connected between the two sets of side plates, the upper preheating roller comprises a heat conducting pipe, a preheating pipe is sleeved on the heat conducting pipe, and a spiral flow groove is spirally opened on the preheating pipe;

[0011] A lower preheating roller is arranged below the upper preheating roller. The lower preheating roller has the same structure as the upper preheating roller, and a gap is arranged between the two.

[0012] Furthermore, the cleaning disc installation unit includes a cleaning frame; a bottom groove is opened at the bottom of the cleaning frame, and several groups of the debris cleaning units are arranged at equal intervals below the bottom groove along the length direction of the bottom groove, and the top of each group of the debris cleaning units extends into the cleaning frame cavity, and the top is rotatably connected to a sealed bearing seat, and the top of the sealed bearing seat is rotatably connected to a fixed pipe.

[0013] Furthermore, a material extraction pipe is provided on the top of the cleaning frame, and an intermediate pipe is connected to the input end of the material extraction pipe; the top of each group of fixed pipes is connected to the intermediate pipe.

[0014] Furthermore, a group of first gears are provided on the main body of several groups of the debris cleaning units, and chains are transmission connected between the several groups of the first gears; one group of the debris cleaning units is provided with a second gear, and the second gear is transmission connected to the output end of the second motor.

[0015] Furthermore, the debris cleaning unit also includes a rotating tube; the top of the rotating tube is rotatably connected to the fixed tube, and the cavities of the two are connected; the bottom of the rotating tube is connected to the cleaning disk, and an inner disk is provided in the cleaning disk, the inner disk is a trumpet-shaped structure, and the height at the center is higher than the height around it; a central slot is opened at the center of the inner disk, and a central crushing mechanism is provided in the central slot; a plurality of groups of side slots are distributed in a circular array around the central slot, and a group of side crushing mechanisms is provided in each group of side slots.

[0016] Furthermore, the scraper mechanism includes a scraper base, the scraper base has a crescent-shaped cross-section when viewed from above, and a feed port is provided on the scraper base; a first vertical plate is installed at one side edge of the bottom of the scraper base, and a scraper plate is provided at the bottom of the first vertical plate.

[0017] Furthermore, a second vertical plate is provided at the bottom edge of the scraper base on one side away from the first vertical plate, the bottom height of the second vertical plate is higher than the bottom height of the first vertical plate, and a leakage-proof plate is provided at the bottom of the second vertical plate, and a feeding gap is provided between the leakage-proof plate and the scraper plate; a wiping plate is provided at the bottom of the scraper plate.

[0018] Furthermore, the side crushing mechanism includes a transverse rod and two groups of transverse fixed rods, the two groups of transverse fixed rods are symmetrically arranged on both sides of the transverse rod, and a group of crushing sleeves are sleeved on the transverse rod and the two groups of transverse fixed rods. A plurality of groups of scrapers are distributed in a circular array on the crushing sleeve, and the scrapers extend in a corrugated shape, and a plurality of groups of scraping teeth are evenly spaced at one end of the scraper away from the crushing sleeve.

[0019] A working method of a waste film recycling device, the working method comprising:

[0020] The waste film roll to be processed is sleeved on the unwinding drum, and then one end is stretched and passed through the scrap cleaning unit, and then sleeved on the winding drum;

[0021] Control the take-up drum to rotate and wind the waste film on the unwinding drum onto the take-up drum;

[0022] When the waste film moves toward the winding drum, it is first preheated to soften the adhesive layer on the surface of the waste film;

[0023] Control the rotation of each group of cleaning discs;

[0024] The scraper mechanism at the bottom of the cleaning plate scrapes off the debris on the surface of the waste film adhesive layer in a rotating manner, and re-applies the scraped adhesive layer evenly, and the scraped debris is sucked into the cleaning plate;

[0025] When the crushed material passes through the cleaning disc, it is crushed by cutting and grinding;

[0026] The processed scraps are processed centrally after passing through the cleaning disc installation unit cavity;

[0027] The waste film with the scraps removed continues to move and is finally wound on the winding drum.

[0028] The beneficial effects of the present invention are:

[0029] 1. Several groups of crescent-shaped scraper plates are distributed in a circular array and rotate around the central axis of the cleaning disk, so that the scraper plates can clean the debris on the surface of the waste film adhesive layer in a rotating manner. Compared with the existing single-direction scraping, the contact time between the scraper plates and the surface of the waste film adhesive layer is increased and the cleaning force is increased. At the same time, the preheated and softened and scraped adhesive layer is re-applied in a rotating manner through the wiper plate, so that the adhesive layer is more evenly distributed and will not accumulate, thereby affecting subsequent recycling. While improving the debris cleaning effect, the quality of the subsequent secondary use of the waste film is guaranteed.

[0030] 2. After the scraper plate scrapes up the debris, the debris will pass through the channel between the first vertical plate and the second vertical plate. By utilizing the height difference between the leak-proof plate and the scraper plate, even if the debris falls, it will fall on the leak-proof plate, so it will not accumulate on the scraper plate, and will not block the feed gap, thus ensuring the smooth absorption of the debris.

[0031] 3. After the debris enters the cleaning disc cavity, it will move upward along the inner disc slope and pass through the side notch. At this time, the horizontal rotating rod rotates under the suction of the solid material pump, and a set of scrapers on its surface will slide and rub against the two sets of scrapers on the horizontal fixed rods on both sides. When the debris passes through the scrapers, the larger debris will be cut and enter the rotating tube through the through slot together with the smaller debris. This ensures that the volume of the debris is small enough so that the debris will not cause blockage and accumulation in the entire path of entering the dust box. This improves the collection effect of the debris.

[0032] 4. When the crushed materials are in the form of large particles or have strong viscosity and cannot be cut by the scraper, they cannot pass through the side notch, and then continue to pass through the slope of the inner plate side wall to the center notch. Similarly, the suction of the solid material pump is used to rotate the crushing ball, so that the crushing ball and the center notch have rolling friction. When the crushed materials pass through the center notch, they will be ground and crushed by the crushing ball and the crushing convex head on the center notch. In cooperation with the scraper, the crushed materials are processed by cutting and grinding at the same time to ensure the crushing quality.

[0033] 5. The scraper has a corrugated structure, with scraping teeth on one edge and through grooves on the side wall, which not only increases the cutting effect on the debris, but also prevents the debris from accumulating on the scraping teeth, thereby improving the smoothness of the debris cutting.

[0034] 6. Turn on the gas heating device, which transmits heat energy to the heat pipes of the upper and lower preheating rollers at the same time, so that the two groups of preheating pipes are heated at the same time. When the waste film passes through the gap, the friction between the waste film and the two groups of preheating pipes is used to make the two groups of preheating pipes rotate in opposite directions. When rotating, the contact area between the heat emitted by the preheating pipe and the waste film is increased due to the spiral flow groove, and the heat can be continuously and evenly transmitted to the upper and lower surfaces of the waste film by using its spiral characteristics. Not only the preheating effect is improved, but also the preheating speed is accelerated.

[0035] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0037] Figure 1 A schematic structural diagram of a recycling device according to an embodiment of the present invention is shown.

[0038] Figure 2 A schematic structural diagram of a workbench according to an embodiment of the present invention is shown.

[0039] Figure 3 A bottom view schematically shows a cleaning disk mounting unit according to an embodiment of the present invention.

[0040] Figure 4 A structural schematic diagram of a preheating unit according to an embodiment of the present invention is shown.

[0041] Figure 5 A schematic cross-sectional view of a cleaning disk mounting unit according to an embodiment of the present invention is shown.

[0042] Figure 6 A schematic structural diagram of a debris cleaning unit according to an embodiment of the present invention is shown.

[0043] Figure 7 A schematic cross-sectional view of a debris cleaning unit according to an embodiment of the present invention is shown.

[0044] Figure 8 A schematic structural diagram of an inner disk according to an embodiment of the present invention is shown.

[0045] Fig. 9 The embodiment of the present invention is shown Figure 6 Enlarged schematic diagram within circle A in the middle.

[0046] Fig.10 A cross-sectional schematic diagram of a scraper mechanism according to an embodiment of the present invention is shown.

[0047] Fig.11 A schematic structural diagram of a side crushing mechanism according to an embodiment of the present invention is shown.

[0048] Fig.12 The embodiment of the present invention is shown Figure 8 Enlarged schematic diagram within circle B in the middle.

[0049] In the figure: 100, workbench; 110, unwinding slot; 120, winding slot; 200, unwinding drum; 300, winding drum; 310, first motor; 400, gas heating device; 500, preheating unit; 510, side plate; 520, heat pipe; 530, preheating pipe; 540, spiral flow slot; 600, electric slide; 700, cleaning disk installation unit; 701, second motor; 710, cleaning rack; 711, bottom slot; 720, extraction pipe; 730, intermediate pipe; 740, fixed pipe; 750, sealed bearing seat; 760, first gear; 770, chain; 780, second gear; 800, cleaning table; 810, feeding roller; 900, crushing Material cleaning unit; 910, rotating tube; 920, cleaning plate; 930, inner plate; 931, side notch; 932, center notch; 940, side crushing mechanism; 941, horizontal rotating rod; 942, horizontal fixed rod; 943, crushing sleeve; 944, scraper; 945, scraping teeth; 946, through groove; 950, center crushing mechanism; 951, ball limit ring; 952, support column; 953, crushing ball; 954, crushing protrusion; 960, bottom plate; 961, micropore; 970, scraping mechanism; 971, scraping bar base; 972, first vertical plate; 973, scraping plate; 974, second vertical plate; 975, leakproof plate; 976, feed port; 977, wiper plate. DETAILED DESCRIPTION

[0050] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0051] The embodiment of the present invention provides a waste film recycling device, including a workbench 100. For example, Figure 1 , Figure 2 and Figure 3 As shown, the unwinding groove 110 and the winding groove 120 are symmetrically arranged at the edges of both ends of the workbench 100, and the unwinding groove 110 and the winding groove 120 are respectively provided with an unwinding drum 200 and a winding drum 300. One end of the winding drum 300 is connected to a first motor 310. The unwinding drum 200 is used to place the waste film roll to be processed, and the winding drum 300 is used to store the waste film roll that has been processed.

[0052] The workbench 100 is provided with a preheating unit 500. The preheating unit 500 is used to heat the waste film to soften the surface adhesive layer of the waste film.

[0053] An electric slide 600 is disposed in a vertical direction on one side of the preheating unit 500 close to the winding groove 120 , and a cleaning disc mounting unit 700 is disposed on the output end of the electric slide 600 .

[0054] A plurality of groups of debris cleaning units 900 are evenly spaced and distributed at the bottom of the cleaning disk installation unit 700 .

[0055] The debris cleaning unit 900 is used to clean the debris on the surface of the waste discharge membrane.

[0056] A cleaning platform 800 is provided directly below the scrap cleaning unit 900, and a group of feeding rollers 810 are respectively provided at the edges of the cleaning platform 800. The cleaning platform 800 is used to support the waste discharge film.

[0057] A gas heating device 400 is disposed on one side of the workbench 100, and the output end of the gas heating device 400 is connected to the cavity of the preheating unit 500. The gas heating device 400 is used to provide heat energy to the preheating unit 500.

[0058] A solid material pump is provided on one side of the workbench 100, the output end of the solid material pump is connected to a dust box, and the input end of the solid material pump is connected to the cleaning disc mounting unit 700. The solid material pump is used to suck up the scraped debris and discharge it into the dust box.

[0059] The waste film roll to be processed is sleeved on the unwinding drum 200, and then one end is stretched and passes through the preheating unit 500 and the debris cleaning unit 900 in sequence, and then sleeved on the winding drum 300, and the first motor 310 is turned on to drive the winding drum 300 to rotate, and the waste film is sleeved on the winding drum 300 after being preheated and cleaned of debris, so as to realize the function of recycling the waste film.

[0060] For example, Figure 4As shown, the preheating unit 500 includes two sets of side plates 510, which are symmetrically mounted on the edges of both sides of the top of the workbench 100. An upper preheating roller is rotatably connected between the two sets of side plates 510, and the upper preheating roller includes a heat conducting pipe 520, one end of which is connected to the gas heating device 400. A preheating pipe 530 is sleeved on the heat conducting pipe 520, and a spiral flow groove 540 is spirally opened on the preheating pipe 530.

[0061] Furthermore, a lower preheating roller is provided below the upper preheating roller, the lower preheating roller has the same structure as the upper preheating roller, and a gap is provided between the two.

[0062] The gas heating device 400 is turned on to simultaneously transmit heat energy to the heat conducting tubes 520 of the upper preheating roller and the lower preheating roller, so that the two groups of preheating tubes 530 are heated at the same time. When the waste discharge film passes through the gap, the friction between the waste discharge film and the two groups of preheating tubes 530 is used to make the two groups of preheating tubes 530 rotate in opposite directions. When rotating, the contact area between the heat emitted by the preheating tubes 530 and the waste discharge film is increased due to the spiral flow grooves 540, and the heat can be continuously and evenly transmitted to the upper and lower surfaces of the waste discharge film by using its spiral characteristics. Not only the preheating effect is improved, but also the preheating speed is accelerated.

[0063] For example, Figure 5 As shown, the cleaning disc installation unit 700 includes a cleaning frame 710. A bottom groove 711 is provided at the bottom of the cleaning frame 710, and a plurality of groups of the debris cleaning units 900 are arranged at equal intervals below the bottom groove 711 along the length direction of the bottom groove 711, and the top of each group of the debris cleaning units 900 extends into the cavity of the cleaning frame 710, and a sealing bearing seat 750 is rotatably connected to the top, and a fixed pipe 740 is rotatably connected to the top of the sealing bearing seat 750. A pumping pipe 720 is provided at the top of the cleaning frame 710, and the output end of the pumping pipe 720 is connected to the solid pumping pump, and the input end of the pumping pipe 720 is connected to an intermediate pipe 730. The top of each group of the fixed pipe 740 is connected to the intermediate pipe 730. A group of first gears 760 are provided on the main body of the plurality of groups of the debris cleaning units 900, and a chain 770 is transmission-connected between the plurality of groups of the first gears 760. A second gear 780 is provided on one group of the debris cleaning units 900 , and the second gear 780 is drivingly connected to the output end of the second motor 701 .

[0064] The second motor 701 is started, and the second motor 701 drives a group of debris cleaning units 900 corresponding to the second gear 780 to rotate, and then the chain 770 drives the other groups of debris cleaning units 900 to rotate, and then the debris adhering to the surface of the waste discharge film adhesive layer is scraped off by the bottom of the debris cleaning unit 900 in a rotating manner. At the same time, the solid material extraction pump is turned on, and the scraped debris passes through the debris cleaning unit 900, the fixed pipe 740 and the intermediate pipe 730, and finally discharged into the dust box through the extraction pipe 720. The centralized processing of the debris is achieved, saving the later cleaning work.

[0065] For example, Figure 6 , Figure 7 and Figure 8 As shown, the scrap cleaning unit 900 includes a rotating tube 910. The top of the rotating tube 910 is rotatably connected to the sealed bearing seat 750, and the top of the rotating tube 910 is connected to the fixed tube 740 through the sealed bearing seat 750. The first gear 760 and the second gear 780 are both sleeved on the rotating tube 910. The bottom of the rotating tube 910 extends to the bottom of the bottom groove 711 and is connected to a cleaning disk 920 with a trumpet-shaped structure. A bottom plate 960 is installed at the bottom of the cleaning disk 920, and micro holes 961 are provided on the bottom plate 960. A plurality of scraping mechanisms 970 are distributed in a ring array at the bottom of the cleaning disk 920.

[0066] Furthermore, the cleaning plate 920 is provided with an inner plate 930, and the inner plate 930 is a trumpet-shaped structure, and the height at the center is higher than the height around it. The inner plate 930 is provided with a central notch 932 at the center, and a central crushing mechanism 950 is provided in the central notch 932. A plurality of groups of side notches 931 are distributed in a circular array around the central notch 932, and a group of side crushing mechanisms 940 is provided in each group of side notches 931.

[0067] For example, Fig. 9 and Fig.10 As shown, the scraper mechanism 970 includes a scraper base 971, the scraper base 971 has a crescent-shaped cross-section when viewed from above, and a feed port 976 is provided on the scraper base 971. A first vertical plate 972 is installed at one edge of the bottom of the scraper base 971, and a scraper plate 973 is provided at the bottom of the first vertical plate 972. A second vertical plate 974 is provided at the bottom edge of the scraper base 971 away from the first vertical plate 972, the bottom height of the second vertical plate 974 is higher than the bottom height of the first vertical plate 972, and a leak-proof plate 975 is provided at the bottom of the second vertical plate 974, and a feed gap is provided between the leak-proof plate 975 and the scraper plate 973. A wiper plate 977 is provided at the bottom of the scraper plate 973, and the material of the wiper plate 977 is adopted but not limited to sponge.

[0068] For example, Fig.11 As shown, the side crushing mechanism 940 includes a traverse rod 941 and two sets of transverse rods 942. The two sets of transverse rods 942 are symmetrically arranged on both sides of the traverse rod 941, and the three are arranged in a step-like manner along the slope of the side notch 931. The two ends of the traverse rod 941 are rotatably connected to the inner walls on both sides of the side notch 931. A set of crushing sleeves 943 are sleeved on the traverse rod 941 and the two sets of transverse rods 942. A plurality of scrapers 944 are distributed in a ring array on the crushing sleeve 943. The scrapers 944 extend in a corrugated shape, and a plurality of scraping teeth 945 are evenly spaced on the end of the scraper 944 away from the crushing sleeve 943. A plurality of through grooves 946 are evenly spaced on the side wall of the scraper 944.

[0069] For example, Fig.12 As shown, the central crushing mechanism 950 includes two sets of ball stop rings 951, which are symmetrically arranged at the upper and lower ends of the central notch 932, and support columns 952 are installed on the two sets of ball stop rings 951. A crushing ball 953 is arranged in the central notch 932, and a plurality of sets of crushing protrusions 954 are evenly distributed on the crushing ball 953 and the inner wall of the central notch 932. The upper and lower ends of the crushing ball 953 are respectively rolled and fitted with the inner walls of the two sets of ball stop rings 951.

[0070] First, adjust the electric slide 600 so that the bottom of the scraper mechanism 970 can fit with the surface of the waste film adhesive layer, then turn on the solid material pump, and the debris with low adhesion on the surface of the waste film will first enter the cavity of the cleaning disk 920 through the micropores 961. At the same time, the second motor 701 drives the rotating tube 910 and the cleaning disk 920 to rotate, and then the cleaning disk 920 drives each group of scraper mechanisms 970 to rotate around the central axis of the cleaning disk 920. The scraper plate 973 and the surface of the waste film adhesive layer are rotated to scrape off the debris with strong adhesion, and at the same time, the scraping plate 977 is used to smooth the scraped adhesive layer. Compared with the traditional single-direction direct scraping, while ensuring the quality of the debris cleaning, it also ensures that the adhesive layer will not fall off, so that the adhesive layer on the surface of the waste film after the cleaning work is still evenly distributed, and there will be no accumulation due to scraping. At the same time, after the scraper plate 973 scrapes up the debris, the debris will pass through the channel between the first vertical plate 972 and the second vertical plate 974, and take advantage of the height difference between the leak-proof plate 975 and the scraper plate 973, so that even if the debris falls, it will fall on the leak-proof plate 975, so it will not accumulate on the scraper plate 973, and will not block the feeding gap, thus ensuring the smoothness of the debris absorption.

[0071] After the debris enters the cavity of the cleaning disk 920, it moves upward along the slope of the inner disk 930 and passes through the side notch 931. At this time, the horizontal rod 941 rotates under the suction of the solid material pump, and a set of scrapers 944 on its surface will slide and rub with the two sets of scrapers 944 on the horizontal rods 942 on both sides in a static state. When the debris passes through the scrapers 944, the larger debris will be cut and enter the rotating tube 910 through the through groove 946 together with the smaller debris. It is ensured that the volume of the debris is small enough so that the debris will not cause blockage and accumulation in the entire path entering the dust box. Therefore, the collection effect of the debris is improved.

[0072] When the crushed materials are in the form of large particles or have strong viscosity and cannot be cut by the scraper 944, they cannot pass through the side notch 931, and then continue to pass through the slope of the side wall of the inner plate 930 to the central notch 932. Similarly, the suction force of the solid material pump is used to rotate the crushing ball 953, so that the crushing ball 953 and the central notch 932 have rolling friction. When the crushed materials pass through the central notch 932, they are ground and crushed by the crushing ball 953 and the crushing protrusion 954 on the central notch 932. In cooperation with the scraper 944, the crushed materials are processed simultaneously by cutting and grinding, ensuring the crushing quality.

[0073] The scraper 944 is a corrugated structure with scraping teeth 945 provided at one edge and a through groove 946 provided on the side wall, which not only increases the cutting effect on the scraps, but also prevents the scraps from accumulating on the scraping teeth 945, thereby improving the smoothness of the scrap cutting.

[0074] Several groups of crescent-shaped scraper plates 973 are distributed in a circular array and rotate around the central axis of the cleaning disk 920, so that the scraper plates 973 can clean the debris on the surface of the waste film adhesive layer in a rotating manner. Compared with the existing single-direction scraping, the contact time between the scraper plates 973 and the surface of the waste film adhesive layer is increased and the cleaning force is increased. At the same time, the preheated, softened and scraped adhesive layer is re-applied in a rotating manner through the wiper plate 977, so that the adhesive layer is more evenly distributed and does not accumulate, thereby affecting subsequent recycling. While improving the debris cleaning effect, the quality of the subsequent secondary use of the waste film is guaranteed.

[0075] Based on the above-mentioned waste film recycling device, the embodiment of the present invention further proposes a working method for the recycling device. Exemplarily, the working method includes:

[0076] The waste film roll to be processed is sleeved on the unwinding drum, and then one end is stretched and passed through the scrap cleaning unit, and then sleeved on the winding drum;

[0077] Control the take-up drum to rotate and wind the waste film on the unwinding drum onto the take-up drum;

[0078] When the waste film moves toward the winding drum, it is first preheated by the preheating unit to soften the adhesive layer on the surface of the waste film;

[0079] The second motor is started, and each group of cleaning discs is driven to rotate by the second motor, and the solid material extraction pump is started at the same time;

[0080] The scraper at the bottom of the cleaning plate scrapes off the debris on the surface of the waste film adhesive layer in a rotating manner, and re-applies the scraped adhesive layer evenly through the wiper;

[0081] The crushed materials pass through the side slots and the center slots, are crushed by the side crushing mechanism and the center crushing mechanism in two ways: cutting and grinding, and are sucked into the rotating tube;

[0082] The processed scraps pass through the fixed pipe, intermediate pipe and extraction pipe, and then enter the dust collecting box for centralized processing;

[0083] The waste film with the scraps removed continues to move and is finally wound on the winding drum.

[0084] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein; and these modifications or substitutions do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A waste film recycling device, comprising a workbench (100), characterized in that: A reel-off drum (200) and a reel-up drum (300) are symmetrically arranged at the edges of both ends of the workbench (100), and a cleaning disc installation unit (700) is lifted and arranged directly above the workbench (100); A plurality of groups of debris cleaning units (900) are rotatably connected below the cleaning disk mounting unit (700); The scrap cleaning unit (900) comprises a cleaning disc (920) with a trumpet-shaped structure, a bottom plate (960) being installed at the bottom of the cleaning disc (920), and a plurality of groups of scraping mechanisms (970) being distributed in a circular array at the bottom of the cleaning disc (920); the cross section of the scraping mechanism (970) is a crescent-shaped structure; A plurality of scraping mechanisms (970) are used to scrape and absorb the debris on the surface of the waste discharge film by rotating around the central axis of the bottom plate (960) to avoid the generation of residues caused by scraping in a single direction and also to prevent the rubber layer on the surface of the waste discharge film from being separated; The scrap cleaning unit (900) further comprises a rotating tube (910); the top of the rotating tube (910) is rotatably connected to the fixed tube (740), and the cavities of the two are in communication; the bottom of the rotating tube (910) is in communication with the cleaning disc (920), an inner disc (930) is provided inside the cleaning disc (920), the inner disc (930) is a trumpet-shaped structure, and the height at the center is higher than the height of the surroundings; a central notch (932) is provided at the center of the inner disc (930), and a central crushing mechanism (950) is provided in the central notch (932); a plurality of groups of side notches (931) are distributed in a circular array around the central notch (932), and a group of side crushing mechanisms (940) is provided in each group of the side notches (931); The scraper mechanism (970) comprises a scraper base (971), the scraper base (971) has a crescent-shaped cross-section when viewed from above, and a feed port (976) is provided on the scraper base (971); a first vertical plate (972) is installed at an edge of one side of the bottom of the scraper base (971), and a scraper plate (973) is provided at the bottom of the first vertical plate (972); A second vertical plate (974) is provided at the bottom edge of the scraper base (971) on one side away from the first vertical plate (972); the bottom height of the second vertical plate (974) is higher than the bottom height of the first vertical plate (972); a leak-proof plate (975) is provided at the bottom of the second vertical plate (974); a material feeding gap is provided between the leak-proof plate (975) and the scraper plate (973); and a wiper plate (977) is provided at the bottom of the scraper plate (973); The side crushing mechanism (940) comprises a transverse rod (941) and two groups of transverse rods (942), the two groups of transverse rods (942) being symmetrically arranged on both sides of the transverse rod (941), a group of crushing sleeves (943) being sleeved on the transverse rod (941) and the two groups of transverse rods (942), a plurality of groups of scrapers (944) being distributed in a circular array on the crushing sleeve (943), the scrapers (944) extending in a corrugated shape, and a plurality of groups of scraping teeth (945) being distributed at equal intervals on one end of the scraper (944) away from the crushing sleeve (943); One group of the debris cleaning units (900) is provided with a second gear (780), and the input end of the second gear (780) is transmission-connected to a second motor (701).

2. The waste film recycling device according to claim 1, characterized in that: A preheating unit (500) is provided on one side of the cleaning disk installation unit (700) close to the unwinding drum (200); the preheating unit (500) comprises two groups of side plates (510), the two groups of side plates (510) are symmetrically installed at the edges of both sides of the top of the workbench (100), an upper preheating roller is rotatably connected between the two groups of side plates (510), the upper preheating roller comprises a heat conducting pipe (520), a preheating pipe (530) is sleeved on the heat conducting pipe (520), and a spiral flow groove (540) is spirally opened on the preheating pipe (530); A lower preheating roller is arranged below the upper preheating roller. The lower preheating roller has the same structure as the upper preheating roller, and a gap is arranged between the two.

3. The waste film recycling device according to claim 1, characterized in that: The cleaning disc installation unit (700) comprises a cleaning frame (710); a bottom groove (711) is provided at the bottom of the cleaning frame (710); a plurality of groups of the scrap cleaning units (900) are arranged at equal intervals below the bottom groove (711) along the length direction thereof; the top of each group of the scrap cleaning units (900) extends into the cavity of the cleaning frame (710), and the top is rotatably connected to a sealing bearing seat (750); the top of the sealing bearing seat (750) is rotatably connected to a fixed pipe (740).

4. The waste film recycling device according to claim 3 is characterized in that: A material extraction pipe (720) is provided on the top of the cleaning frame (710), and an intermediate pipe (730) is connected to the input end of the material extraction pipe (720); the top of each group of fixed pipes (740) is connected to the intermediate pipe (730).

5. The waste film recycling device according to claim 4, characterized in that: A group of first gears (760) are provided on the main bodies of the plurality of groups of the debris cleaning units (900), and chains (770) are transmission-connected between the plurality of groups of the first gears (760).

6. A working method applied to the waste film recycling device according to any one of claims 1 to 5, characterized in that: The working method comprises: The waste film roll to be processed is sleeved on the unwinding drum, and then one end is stretched and passed through the scrap cleaning unit, and then sleeved on the winding drum; Control the take-up drum to rotate and wind the waste film on the unwinding drum onto the take-up drum; When the waste film moves toward the winding drum, it is first preheated to soften the adhesive layer on the surface of the waste film; Starting the second motor to control the rotation of each group of cleaning discs; The scraper mechanism at the bottom of the cleaning plate scrapes off the debris on the surface of the waste film adhesive layer in a rotating manner, and re-applies the scraped adhesive layer evenly, and the scraped debris is sucked into the cleaning plate; When the crushed material passes through the cleaning disc, it is crushed by cutting and grinding; The processed scraps are processed centrally after passing through the cleaning disc installation unit cavity; The waste film with the scraps removed continues to move and is finally wound on the winding drum.

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